vendor: update containerd/cri 1a00c06886
full diff: c0294ebfe0...1a00c06886
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn
parent
5607b23b0f
commit
12c7d69769
@ -56,7 +56,7 @@ gotest.tools/v3 bb0d8a963040ea5048dcef1a14d8
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github.com/cilium/ebpf 60c3aa43f488292fe2ee50fb8b833b383ca8ebbb
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# cri dependencies
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github.com/containerd/cri c0294ebfe0b4342db85c0faf7727ceb8d8c3afce # master
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github.com/containerd/cri 1a00c068864a59835ff442e0dddfa5a254be6bb3 # master
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github.com/davecgh/go-spew 8991bc29aa16c548c550c7ff78260e27b9ab7c73 # v1.1.1
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github.com/docker/distribution 0d3efadf0154c2b8a4e7b6621fff9809655cc580
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github.com/docker/docker d1d5f6476656c6aad457e2a91d3436e66b6f2251
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@ -90,6 +90,12 @@ github.com/containerd/go-cni 0d360c50b10b350b6bb23863fd4d
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github.com/containernetworking/cni 4cfb7b568922a3c79a23e438dc52fe537fc9687e # v0.7.1
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github.com/containernetworking/plugins 9f96827c7cabb03f21d86326000c00f61e181f6a # v0.7.6
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# image decrypt depedencies
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github.com/containerd/imgcrypt 9e761ccd6069fb707ec9493435f31475b5524b38 # v1.0.1
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github.com/containers/ocicrypt 0343cc6053fd65069df55bce6838096e09b4033a # v1.0.1 from containerd/imgcrypt
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github.com/fullsailor/pkcs7 8306686428a5fe132eac8cb7c4848af725098bd4 # from containers/ocicrypt
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gopkg.in/square/go-jose.v2 730df5f748271903322feb182be83b43ebbbe27d # v2.3.1 from containers/ocicrypt
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# zfs dependencies
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github.com/containerd/zfs 9abf673ca6ff9ab8d9bd776a4ceff8f6dc699c3d
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github.com/mistifyio/go-zfs f784269be439d704d3dfa1906f45dd848fed2beb
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2
vendor/github.com/containerd/cri/README.md
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2
vendor/github.com/containerd/cri/README.md
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@ -78,7 +78,7 @@ specifications as appropriate.
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backport version of `libseccomp-dev` is required. See [travis.yml](.travis.yml) for an example on trusty.
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* **btrfs development library.** Required by containerd btrfs support. `btrfs-tools`(Ubuntu, Debian) / `btrfs-progs-devel`(Fedora, CentOS, RHEL)
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2. Install **`socat`** (required by portforward).
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2. Install and setup a go 1.12.9 development environment. (Note: You can check the travis logs for a recent pull request to confirm the version(s) of golang currently being used to build and test master.)
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2. Install and setup a go 1.13.8 development environment. (Note: You can check the travis logs for a recent pull request to confirm the version(s) of golang currently being used to build and test master.)
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3. Make a local clone of this repository.
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4. Install binary dependencies by running the following command from your cloned `cri/` project directory:
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```bash
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17
vendor/github.com/containerd/cri/pkg/config/config.go
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17
vendor/github.com/containerd/cri/pkg/config/config.go
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@ -153,6 +153,18 @@ type RegistryConfig struct {
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TLS *TLSConfig `toml:"tls" json:"tls"`
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}
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// ImageDecryption contains configuration to handling decryption of encrypted container images.
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type ImageDecryption struct {
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// KeyModel specifies the trust model of where keys should reside.
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//
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// Details of field usage can be found in:
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// https://github.com/containerd/cri/tree/master/docs/config.md
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//
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// Details of key models can be found in:
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// https://github.com/containerd/cri/tree/master/docs/decryption.md
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KeyModel string `toml:"key_model" json:"keyModel"`
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}
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// PluginConfig contains toml config related to CRI plugin,
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// it is a subset of Config.
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type PluginConfig struct {
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@ -162,6 +174,8 @@ type PluginConfig struct {
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CniConfig `toml:"cni" json:"cni"`
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// Registry contains config related to the registry
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Registry Registry `toml:"registry" json:"registry"`
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// ImageDecryption contains config related to handling decryption of encrypted container images
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ImageDecryption `toml:"image_decryption" json:"imageDecryption"`
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// DisableTCPService disables serving CRI on the TCP server.
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DisableTCPService bool `toml:"disable_tcp_service" json:"disableTCPService"`
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// StreamServerAddress is the ip address streaming server is listening on.
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@ -236,6 +250,9 @@ const (
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RuntimeUntrusted = "untrusted"
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// RuntimeDefault is the implicit runtime defined for ContainerdConfig.DefaultRuntime
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RuntimeDefault = "default"
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// KeyModelNode is the key model where key for encrypted images reside
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// on the worker nodes
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KeyModelNode = "node"
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)
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// ValidatePluginConfig validates the given plugin configuration.
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2
vendor/github.com/containerd/cri/pkg/config/config_unix.go
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2
vendor/github.com/containerd/cri/pkg/config/config_unix.go
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@ -52,7 +52,7 @@ func DefaultConfig() PluginConfig {
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TLSKeyFile: "",
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TLSCertFile: "",
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},
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SandboxImage: "k8s.gcr.io/pause:3.1",
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SandboxImage: "k8s.gcr.io/pause:3.2",
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StatsCollectPeriod: 10,
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SystemdCgroup: false,
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MaxContainerLogLineSize: 16 * 1024,
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15
vendor/github.com/containerd/cri/pkg/containerd/opts/spec_unix.go
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15
vendor/github.com/containerd/cri/pkg/containerd/opts/spec_unix.go
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@ -423,10 +423,11 @@ func WithResources(resources *runtime.LinuxContainerResources) oci.SpecOpts {
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s.Linux.Resources.Memory = &runtimespec.LinuxMemory{}
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}
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var (
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p = uint64(resources.GetCpuPeriod())
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q = resources.GetCpuQuota()
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shares = uint64(resources.GetCpuShares())
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limit = resources.GetMemoryLimitInBytes()
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p = uint64(resources.GetCpuPeriod())
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q = resources.GetCpuQuota()
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shares = uint64(resources.GetCpuShares())
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limit = resources.GetMemoryLimitInBytes()
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hugepages = resources.GetHugepageLimits()
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)
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if p != 0 {
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@ -447,6 +448,12 @@ func WithResources(resources *runtime.LinuxContainerResources) oci.SpecOpts {
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if limit != 0 {
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s.Linux.Resources.Memory.Limit = &limit
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}
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for _, limit := range hugepages {
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s.Linux.Resources.HugepageLimits = append(s.Linux.Resources.HugepageLimits, runtimespec.LinuxHugepageLimit{
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Pagesize: limit.PageSize,
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Limit: limit.Limit,
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})
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}
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return nil
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}
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}
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23
vendor/github.com/containerd/cri/pkg/server/image_pull.go
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23
vendor/github.com/containerd/cri/pkg/server/image_pull.go
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@ -32,6 +32,8 @@ import (
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containerdimages "github.com/containerd/containerd/images"
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"github.com/containerd/containerd/log"
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"github.com/containerd/containerd/remotes/docker"
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"github.com/containerd/imgcrypt"
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"github.com/containerd/imgcrypt/images/encryption"
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distribution "github.com/docker/distribution/reference"
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imagespec "github.com/opencontainers/image-spec/specs-go/v1"
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"github.com/pkg/errors"
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@ -106,7 +108,8 @@ func (c *criService) PullImage(ctx context.Context, r *runtime.PullImageRequest)
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return nil, nil
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}
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)
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image, err := c.client.Pull(ctx, ref,
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pullOpts := []containerd.RemoteOpt{
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containerd.WithSchema1Conversion,
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containerd.WithResolver(resolver),
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containerd.WithPullSnapshotter(c.config.ContainerdConfig.Snapshotter),
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@ -114,7 +117,11 @@ func (c *criService) PullImage(ctx context.Context, r *runtime.PullImageRequest)
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containerd.WithPullLabel(imageLabelKey, imageLabelValue),
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containerd.WithMaxConcurrentDownloads(c.config.MaxConcurrentDownloads),
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containerd.WithImageHandler(imageHandler),
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)
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}
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pullOpts = append(pullOpts, c.encryptedImagesPullOpts()...)
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image, err := c.client.Pull(ctx, ref, pullOpts...)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to pull and unpack image %q", ref)
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}
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@ -403,3 +410,15 @@ func newTransport() *http.Transport {
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ExpectContinueTimeout: 5 * time.Second,
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}
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}
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// encryptedImagesPullOpts returns the necessary list of pull options required
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// for decryption of encrypted images based on the cri decryption configuration.
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func (c *criService) encryptedImagesPullOpts() []containerd.RemoteOpt {
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if c.config.ImageDecryption.KeyModel == criconfig.KeyModelNode {
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ltdd := imgcrypt.Payload{}
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decUnpackOpt := encryption.WithUnpackConfigApplyOpts(encryption.WithDecryptedUnpack(<dd))
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opt := containerd.WithUnpackOpts([]containerd.UnpackOpt{decUnpackOpt})
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return []containerd.RemoteOpt{opt}
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}
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return nil
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}
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12
vendor/github.com/containerd/cri/pkg/store/errors.go
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12
vendor/github.com/containerd/cri/pkg/store/errors.go
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@ -16,12 +16,18 @@ limitations under the License.
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package store
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import "errors"
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import "github.com/containerd/containerd/errdefs"
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var (
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// ErrAlreadyExist is the error returned when data added in the store
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// already exists.
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ErrAlreadyExist = errors.New("already exists")
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//
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// This error has been DEPRECATED and will be removed in 1.5. Please switch
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// usage directly to `errdefs.ErrAlreadyExists`.
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ErrAlreadyExist = errdefs.ErrAlreadyExists
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// ErrNotExist is the error returned when data is not in the store.
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ErrNotExist = errors.New("does not exist")
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//
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// This error has been DEPRECATED and will be removed in 1.5. Please switch
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// usage directly to `errdefs.ErrNotFound`.
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ErrNotExist = errdefs.ErrNotFound
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)
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168
vendor/github.com/containerd/cri/vendor.conf
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168
vendor/github.com/containerd/cri/vendor.conf
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@ -1,89 +1,97 @@
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# cri dependencies
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github.com/tchap/go-patricia 666120de432aea38ab06bd5c818f04f4129882c9 # v2.2.6
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github.com/opencontainers/selinux 5215b1806f52b1fcc2070a8826c542c9d33cd3cf
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github.com/docker/docker d1d5f6476656c6aad457e2a91d3436e66b6f2251
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github.com/docker/distribution 0d3efadf0154c2b8a4e7b6621fff9809655cc580
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github.com/docker/distribution 0d3efadf0154c2b8a4e7b6621fff9809655cc580
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github.com/docker/docker d1d5f6476656c6aad457e2a91d3436e66b6f2251
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github.com/opencontainers/selinux 31f70552238c5e017d78c3f1ba65e85f593f48e0 # v1.3.3
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github.com/tchap/go-patricia 666120de432aea38ab06bd5c818f04f4129882c9 # v2.2.6
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# containerd dependencies
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go.opencensus.io v0.22.0
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go.etcd.io/bbolt a0458a2b35708eef59eb5f620ceb3cd1c01a824d # v1.3.3
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google.golang.org/grpc 39e8a7b072a67ca2a75f57fa2e0d50995f5b22f6 # v1.23.1
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google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
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golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
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golang.org/x/sys c990c680b611ac1aeb7d8f2af94a825f98d69720 https://github.com/golang/sys
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golang.org/x/sync 42b317875d0fa942474b76e1b46a6060d720ae6e
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golang.org/x/net f3200d17e092c607f615320ecaad13d87ad9a2b3
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github.com/urfave/cli bfe2e925cfb6d44b40ad3a779165ea7e8aff9212 # v1.22.0
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github.com/syndtr/gocapability d98352740cb2c55f81556b63d4a1ec64c5a319c2
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github.com/sirupsen/logrus 8bdbc7bcc01dcbb8ec23dc8a28e332258d25251f # v1.4.1
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github.com/prometheus/procfs cb4147076ac75738c9a7d279075a253c0cc5acbd
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github.com/prometheus/common 89604d197083d4781071d3c65855d24ecfb0a563
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github.com/prometheus/client_model 99fa1f4be8e564e8a6b613da7fa6f46c9edafc6c
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github.com/prometheus/client_golang f4fb1b73fb099f396a7f0036bf86aa8def4ed823
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github.com/pkg/errors ba968bfe8b2f7e042a574c888954fccecfa385b4 # v0.8.1
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github.com/opencontainers/runtime-spec 29686dbc5559d93fb1ef402eeda3e35c38d75af4 # v1.0.1-59-g29686db
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github.com/opencontainers/runc dc9208a3303feef5b3839f4323d9beb36df0a9dd # v1.0.0-rc10
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github.com/opencontainers/image-spec d60099175f88c47cd379c4738d158884749ed235 # v1.0.1
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github.com/opencontainers/go-digest c9281466c8b2f606084ac71339773efd177436e7
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github.com/matttproud/golang_protobuf_extensions c12348ce28de40eed0136aa2b644d0ee0650e56c # v1.0.1
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github.com/konsorten/go-windows-terminal-sequences 5c8c8bd35d3832f5d134ae1e1e375b69a4d25242 # v1.0.1
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github.com/imdario/mergo 7c29201646fa3de8506f701213473dd407f19646 # v0.3.7
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github.com/hashicorp/golang-lru 7f827b33c0f158ec5dfbba01bb0b14a4541fd81d # v0.5.3
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github.com/grpc-ecosystem/go-grpc-prometheus 6b7015e65d366bf3f19b2b2a000a831940f0f7e0
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github.com/google/uuid 0cd6bf5da1e1c83f8b45653022c74f71af0538a4 # v1.1.1
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github.com/golang/protobuf aa810b61a9c79d51363740d207bb46cf8e620ed5 # v1.2.0
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github.com/gogo/protobuf ba06b47c162d49f2af050fb4c75bcbc86a159d5c # v1.2.1
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github.com/gogo/googleapis d31c731455cb061f42baff3bda55bad0118b126b # v1.2.0
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github.com/godbus/dbus/v5 37bf87eef99d69c4f1d3528bd66e3a87dc201472 # v5.0.3
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github.com/docker/go-units 519db1ee28dcc9fd2474ae59fca29a810482bfb1 # v0.4.0
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github.com/docker/go-metrics 4ea375f7759c82740c893fc030bc37088d2ec098
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github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
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github.com/coreos/go-systemd/v22 2d78030078ef61b3cae27f42ad6d0e46db51b339 # v22.0.0
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github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
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github.com/containerd/ttrpc 92c8520ef9f86600c650dd540266a007bf03670f
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github.com/containerd/go-runc a5c2862aed5e6358b305b0e16bfce58e0549b1cd
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github.com/containerd/fifo bda0ff6ed73c67bfb5e62bc9c697f146b7fd7f13
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github.com/containerd/continuity f2a389ac0a02ce21c09edd7344677a601970f41c
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github.com/containerd/containerd e1221e69a824ce9aaca34c5bb603feb2f921b883
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github.com/containerd/console 8375c3424e4d7b114e8a90a4a40c8e1b40d1d4e6
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github.com/containerd/cgroups 7347743e5d1e8500d9f27c8e748e689ed991d92b
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github.com/beorn7/perks 4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9
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github.com/Microsoft/hcsshim b3f49c06ffaeef24d09c6c08ec8ec8425a0303e2 # v0.8.7
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github.com/Microsoft/go-winio 6c72808b55902eae4c5943626030429ff20f3b63 # v0.4.14
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github.com/BurntSushi/toml 3012a1dbe2e4bd1391d42b32f0577cb7bbc7f005 # v0.3.1
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github.com/cpuguy83/go-md2man 7762f7e404f8416dfa1d9bb6a8c192aa9acb4d19 # v1.0.10
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github.com/russross/blackfriday 05f3235734ad95d0016f6a23902f06461fcf567a # v1.5.2
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github.com/beorn7/perks 37c8de3658fcb183f997c4e13e8337516ab753e6 # v1.0.1
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github.com/BurntSushi/toml 3012a1dbe2e4bd1391d42b32f0577cb7bbc7f005 # v0.3.1
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github.com/cespare/xxhash/v2 d7df74196a9e781ede915320c11c378c1b2f3a1f # v2.1.1
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github.com/containerd/cgroups 7347743e5d1e8500d9f27c8e748e689ed991d92b
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github.com/containerd/console 8375c3424e4d7b114e8a90a4a40c8e1b40d1d4e6
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github.com/containerd/containerd 01310155947cb6eec37dcae29742a165e56acb4a
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github.com/containerd/continuity 0ec596719c75bfd42908850990acea594b7593ac
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github.com/containerd/fifo bda0ff6ed73c67bfb5e62bc9c697f146b7fd7f13
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github.com/containerd/go-runc a5c2862aed5e6358b305b0e16bfce58e0549b1cd
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github.com/containerd/ttrpc 92c8520ef9f86600c650dd540266a007bf03670f
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github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
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github.com/coreos/go-systemd/v22 2d78030078ef61b3cae27f42ad6d0e46db51b339 # v22.0.0
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github.com/cpuguy83/go-md2man 7762f7e404f8416dfa1d9bb6a8c192aa9acb4d19 # v1.0.10
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github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
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github.com/docker/go-metrics b619b3592b65de4f087d9f16863a7e6ff905973c # v0.0.1
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github.com/docker/go-units 519db1ee28dcc9fd2474ae59fca29a810482bfb1 # v0.4.0
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github.com/godbus/dbus/v5 37bf87eef99d69c4f1d3528bd66e3a87dc201472 # v5.0.3
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github.com/gogo/googleapis 01e0f9cca9b92166042241267ee2a5cdf5cff46c # v1.3.2
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github.com/gogo/protobuf 5628607bb4c51c3157aacc3a50f0ab707582b805 # v1.3.1
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github.com/golang/protobuf d23c5127dc24889085f8ccea5c9d560a57a879d8 # v1.3.3
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github.com/google/uuid 0cd6bf5da1e1c83f8b45653022c74f71af0538a4 # v1.1.1
|
||||
github.com/grpc-ecosystem/go-grpc-prometheus c225b8c3b01faf2899099b768856a9e916e5087b # v1.2.0
|
||||
github.com/hashicorp/golang-lru 7f827b33c0f158ec5dfbba01bb0b14a4541fd81d # v0.5.3
|
||||
github.com/imdario/mergo 7c29201646fa3de8506f701213473dd407f19646 # v0.3.7
|
||||
github.com/konsorten/go-windows-terminal-sequences 5c8c8bd35d3832f5d134ae1e1e375b69a4d25242 # v1.0.1
|
||||
github.com/matttproud/golang_protobuf_extensions c12348ce28de40eed0136aa2b644d0ee0650e56c # v1.0.1
|
||||
github.com/Microsoft/go-winio 6c72808b55902eae4c5943626030429ff20f3b63 # v0.4.14
|
||||
github.com/Microsoft/hcsshim 0b571ac85d7c5842b26d2571de4868634a4c39d7 # v0.8.7-24-g0b571ac8
|
||||
github.com/opencontainers/go-digest c9281466c8b2f606084ac71339773efd177436e7
|
||||
github.com/opencontainers/image-spec d60099175f88c47cd379c4738d158884749ed235 # v1.0.1
|
||||
github.com/opencontainers/runc dc9208a3303feef5b3839f4323d9beb36df0a9dd # v1.0.0-rc10
|
||||
github.com/opencontainers/runtime-spec 29686dbc5559d93fb1ef402eeda3e35c38d75af4 # v1.0.1-59-g29686db
|
||||
github.com/pkg/errors ba968bfe8b2f7e042a574c888954fccecfa385b4 # v0.8.1
|
||||
github.com/prometheus/client_golang c42bebe5a5cddfc6b28cd639103369d8a75dfa89 # v1.3.0
|
||||
github.com/prometheus/client_model d1d2010b5beead3fa1c5f271a5cf626e40b3ad6e # v0.1.0
|
||||
github.com/prometheus/common 287d3e634a1e550c9e463dd7e5a75a422c614505 # v0.7.0
|
||||
github.com/prometheus/procfs 6d489fc7f1d9cd890a250f3ea3431b1744b9623f # v0.0.8
|
||||
github.com/russross/blackfriday 05f3235734ad95d0016f6a23902f06461fcf567a # v1.5.2
|
||||
github.com/sirupsen/logrus 8bdbc7bcc01dcbb8ec23dc8a28e332258d25251f # v1.4.1
|
||||
github.com/syndtr/gocapability d98352740cb2c55f81556b63d4a1ec64c5a319c2
|
||||
github.com/urfave/cli bfe2e925cfb6d44b40ad3a779165ea7e8aff9212 # v1.22.0
|
||||
go.etcd.io/bbolt a0458a2b35708eef59eb5f620ceb3cd1c01a824d # v1.3.3
|
||||
go.opencensus.io 9c377598961b706d1542bd2d84d538b5094d596e # v0.22.0
|
||||
golang.org/x/net f3200d17e092c607f615320ecaad13d87ad9a2b3
|
||||
golang.org/x/sync 42b317875d0fa942474b76e1b46a6060d720ae6e
|
||||
golang.org/x/sys 52ab431487773bc9dd1b0766228b1cf3944126bf
|
||||
golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
|
||||
google.golang.org/genproto e50cd9704f63023d62cd06a1994b98227fc4d21a
|
||||
google.golang.org/grpc f495f5b15ae7ccda3b38c53a1bfcde4c1a58a2bc # v1.27.1
|
||||
|
||||
# cgroups dependencies
|
||||
github.com/cilium/ebpf 60c3aa43f488292fe2ee50fb8b833b383ca8ebbb
|
||||
github.com/cilium/ebpf 60c3aa43f488292fe2ee50fb8b833b383ca8ebbb
|
||||
|
||||
# kubernetes dependencies
|
||||
sigs.k8s.io/yaml fd68e9863619f6ec2fdd8625fe1f02e7c877e480 # v1.1.0
|
||||
k8s.io/utils e782cd3c129fc98ee807f3c889c0f26eb7c9daf5
|
||||
k8s.io/kubernetes v1.17.1
|
||||
k8s.io/klog v1.0.0
|
||||
k8s.io/cri-api kubernetes-1.17.1
|
||||
k8s.io/client-go kubernetes-1.17.1
|
||||
k8s.io/api kubernetes-1.17.1
|
||||
k8s.io/apiserver kubernetes-1.17.1
|
||||
k8s.io/apimachinery kubernetes-1.17.1
|
||||
gopkg.in/yaml.v2 53403b58ad1b561927d19068c655246f2db79d48 # v2.2.8
|
||||
gopkg.in/inf.v0 v0.9.1
|
||||
golang.org/x/time 9d24e82272b4f38b78bc8cff74fa936d31ccd8ef
|
||||
golang.org/x/oauth2 0f29369cfe4552d0e4bcddc57cc75f4d7e672a33
|
||||
golang.org/x/crypto 60c769a6c58655dab1b9adac0d58967dd517cfba
|
||||
github.com/stretchr/testify v1.4.0
|
||||
github.com/seccomp/libseccomp-golang 689e3c1541a84461afc49c1c87352a6cedf72e9c # v0.9.1
|
||||
github.com/pmezard/go-difflib v1.0.0
|
||||
github.com/modern-go/reflect2 4b7aa43c6742a2c18fdef89dd197aaae7dac7ccd # 1.0.1
|
||||
github.com/modern-go/concurrent bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94 # 1.0.3
|
||||
github.com/json-iterator/go v1.1.8
|
||||
github.com/google/gofuzz f140a6486e521aad38f5917de355cbf147cc0496 # v1.0.0
|
||||
github.com/emicklei/go-restful b993709ae1a4f6dd19cfa475232614441b11c9d5 # v2.9.5
|
||||
github.com/docker/spdystream 449fdfce4d962303d702fec724ef0ad181c92528
|
||||
github.com/davecgh/go-spew 8991bc29aa16c548c550c7ff78260e27b9ab7c73 # v1.1.1
|
||||
github.com/davecgh/go-spew 8991bc29aa16c548c550c7ff78260e27b9ab7c73 # v1.1.1
|
||||
github.com/docker/spdystream 449fdfce4d962303d702fec724ef0ad181c92528
|
||||
github.com/emicklei/go-restful b993709ae1a4f6dd19cfa475232614441b11c9d5 # v2.9.5
|
||||
github.com/google/gofuzz db92cf7ae75e4a7a28abc005addab2b394362888 # v1.1.0
|
||||
github.com/json-iterator/go 03217c3e97663914aec3faafde50d081f197a0a2 # v1.1.8
|
||||
github.com/modern-go/concurrent bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94 # 1.0.3
|
||||
github.com/modern-go/reflect2 4b7aa43c6742a2c18fdef89dd197aaae7dac7ccd # 1.0.1
|
||||
github.com/pmezard/go-difflib 792786c7400a136282c1664665ae0a8db921c6c2 # v1.0.0
|
||||
github.com/seccomp/libseccomp-golang 689e3c1541a84461afc49c1c87352a6cedf72e9c # v0.9.1
|
||||
github.com/stretchr/testify 221dbe5ed46703ee255b1da0dec05086f5035f62 # v1.4.0
|
||||
golang.org/x/crypto bac4c82f69751a6dd76e702d54b3ceb88adab236
|
||||
golang.org/x/oauth2 0f29369cfe4552d0e4bcddc57cc75f4d7e672a33
|
||||
golang.org/x/time 9d24e82272b4f38b78bc8cff74fa936d31ccd8ef
|
||||
gopkg.in/inf.v0 d2d2541c53f18d2a059457998ce2876cc8e67cbf # v0.9.1
|
||||
gopkg.in/yaml.v2 53403b58ad1b561927d19068c655246f2db79d48 # v2.2.8
|
||||
k8s.io/api e6bc7324d7efd1c8ab0e68dd8162a2b500b0ce3b # v0.18.0-beta.1
|
||||
k8s.io/apimachinery 2373d029717c4d169463414a6127cd1d0d12680e # v0.18.0-beta.1
|
||||
k8s.io/apiserver 9af6eefd238b73bb688c429c32d113d04eeea3a8 # v0.18.0-beta.1
|
||||
k8s.io/client-go 33a99c0dca04e5e335442262f93df4c3faab201b # v0.18.0-beta.1
|
||||
k8s.io/cri-api 3d1680d8d202aa12c5dc5689170c3c03a488d35b # v0.18.0-beta.1
|
||||
k8s.io/klog 2ca9ad30301bf30a8a6e0fa2110db6b8df699a91 # v1.0.0
|
||||
k8s.io/kubernetes f2d7577e31829664899f1b8e3d3a73de8c5f4029 # v1.18.0-beta.1
|
||||
k8s.io/utils 5f6fbceb4c31d35291b2de756aeaae2ddeee3e92
|
||||
sigs.k8s.io/structured-merge-diff/v3 877aee05330847a873a1a8998b40e12a1e0fde25 # v3.0.0
|
||||
sigs.k8s.io/yaml 9fc95527decd95bb9d28cc2eab08179b2d0f6971 # v1.2.0
|
||||
|
||||
# cni dependencies
|
||||
github.com/containernetworking/plugins 9f96827c7cabb03f21d86326000c00f61e181f6a # v0.7.6
|
||||
github.com/containernetworking/cni 4cfb7b568922a3c79a23e438dc52fe537fc9687e # v0.7.1
|
||||
github.com/containerd/go-cni 0d360c50b10b350b6bb23863fd4dfb1c232b01c9
|
||||
github.com/containerd/go-cni 0d360c50b10b350b6bb23863fd4dfb1c232b01c9
|
||||
github.com/containernetworking/cni 4cfb7b568922a3c79a23e438dc52fe537fc9687e # v0.7.1
|
||||
github.com/containernetworking/plugins 9f96827c7cabb03f21d86326000c00f61e181f6a # v0.7.6
|
||||
|
||||
# image decrypt depedencies
|
||||
github.com/containerd/imgcrypt 9e761ccd6069fb707ec9493435f31475b5524b38 # v1.0.1
|
||||
github.com/containers/ocicrypt 0343cc6053fd65069df55bce6838096e09b4033a # v1.0.1 from containerd/imgcrypt
|
||||
github.com/fullsailor/pkcs7 8306686428a5fe132eac8cb7c4848af725098bd4 # from containers/ocicrypt
|
||||
gopkg.in/square/go-jose.v2 730df5f748271903322feb182be83b43ebbbe27d # v2.3.1 from containers/ocicrypt
|
||||
|
||||
191
vendor/github.com/containerd/imgcrypt/LICENSE
generated
vendored
Normal file
191
vendor/github.com/containerd/imgcrypt/LICENSE
generated
vendored
Normal file
@ -0,0 +1,191 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
https://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
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||||
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||||
"Licensor" shall mean the copyright owner or entity authorized by
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||||
the copyright owner that is granting the License.
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||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
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|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
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|
||||
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||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
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||||
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||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
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||||
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|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
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and conversions to other media types.
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||||
"Work" shall mean the work of authorship, whether in Source or
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"Derivative Works" shall mean any work, whether in Source or Object
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Derivative Works a copy of this License; and
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||||
(b) You must cause any modified files to carry prominent notices
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||||
stating that You changed the files; and
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||||
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||||
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||||
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excluding those notices that do not pertain to any part of
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||||
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||||
(d) If the Work includes a "NOTICE" text file as part of its
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||||
distribution, then any Derivative Works that You distribute must
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include a readable copy of the attribution notices contained
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||||
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||||
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You may add Your own copyright statement to Your modifications and
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5. Submission of Contributions. Unless You explicitly state otherwise,
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Notwithstanding the above, nothing herein shall supersede or modify
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||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
Copyright The containerd Authors
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
https://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
102
vendor/github.com/containerd/imgcrypt/README.md
generated
vendored
Normal file
102
vendor/github.com/containerd/imgcrypt/README.md
generated
vendored
Normal file
@ -0,0 +1,102 @@
|
||||
# imgcrypt image encryption library and command line lool
|
||||
|
||||
Project `imgcrypt` is a non-core subproject of containerd.
|
||||
|
||||
The `imgcrypt` library provides API exensions for containerd to support encryted container images and implements
|
||||
the `ctd-decoder` command line tool for use by containerd to decrypt encrypted container images. An extended version
|
||||
of containerd's `ctr` tool (`ctr-enc') with support for encrypting and decrypting container images is also provided.
|
||||
|
||||
`imgcrypt` relies on the [`ocicrypt`](https://github.com/containers/ocicrypt) library for crypto functions on image layers.
|
||||
|
||||
# Usage
|
||||
|
||||
`imgcrypt` requires containerd 1.3 or later.
|
||||
|
||||
Build and install `imgcrypt`:
|
||||
|
||||
```
|
||||
# make
|
||||
# sudo make install
|
||||
```
|
||||
|
||||
Start containerd with a configuration file that looks as follows. To avoid interference with a containerd from a Docker
|
||||
installation we use /tmp for directories. Also, we build containerd 1.3 from the source but do not install it.
|
||||
|
||||
```
|
||||
# cat config.toml
|
||||
disable_plugins = ["cri"]
|
||||
root = "/tmp/var/lib/containerd"
|
||||
state = "/tmp/run/containerd"
|
||||
[grpc]
|
||||
address = "/tmp/run/containerd/mycontainerd.sock"
|
||||
uid = 0
|
||||
gid = 0
|
||||
[stream_processors]
|
||||
[stream_processors."io.containerd.ocicrypt.decoder.v1.tar.gzip"]
|
||||
accepts = ["application/vnd.oci.image.layer.v1.tar+gzip+encrypted"]
|
||||
returns = "application/vnd.oci.image.layer.v1.tar+gzip"
|
||||
path = "/usr/local/bin/ctd-decoder"
|
||||
[stream_processors."io.containerd.ocicrypt.decoder.v1.tar"]
|
||||
accepts = ["application/vnd.oci.image.layer.v1.tar+encrypted"]
|
||||
returns = "application/vnd.oci.image.layer.v1.tar"
|
||||
path = "/usr/local/bin/ctd-decoder"
|
||||
|
||||
# sudo ~/src/github.com/containerd/containerd/bin/containerd -c config.toml
|
||||
```
|
||||
|
||||
Create an RSA key pair using the openssl command line tool and encrypted an image:
|
||||
|
||||
```
|
||||
# openssl genrsa --out mykey.pem
|
||||
Generating RSA private key, 2048 bit long modulus (2 primes)
|
||||
...............................................+++++
|
||||
............................+++++
|
||||
e is 65537 (0x010001)
|
||||
# openssl rsa -in mykey.pem -pubout -out mypubkey.pem
|
||||
writing RSA key
|
||||
# sudo chmod 0666 /tmp/run/containerd/containerd.sock
|
||||
# CTR="/usr/local/bin/ctr-enc -a /tmp/run/containerd/containerd.sock"
|
||||
# $CTR images pull --all-platforms docker.io/library/bash:latest
|
||||
[...]
|
||||
# $CTR images layerinfo --platform linux/amd64 docker.io/library/bash:latest
|
||||
# DIGEST PLATFORM SIZE ENCRYPTION RECIPIENTS
|
||||
0 sha256:9d48c3bd43c520dc2784e868a780e976b207cbf493eaff8c6596eb871cbd9609 linux/amd64 2789669
|
||||
1 sha256:7dd01fd971d4ec7058c5636a505327b24e5fc8bd7f62816a9d518472bd9b15c0 linux/amd64 3174665
|
||||
2 sha256:691cfbca522787898c8b37f063dd20e5524e7d103e1a3b298bd2e2b8da54faf5 linux/amd64 340
|
||||
# $CTR images encrypt --recipient jwe:mypubkey.pem --platform linux/amd64 docker.io/library/bash:latest bash.enc:latest
|
||||
Encrypting docker.io/library/bash:latest to bash.enc:latest
|
||||
$ $CTR images layerinfo --platform linux/amd64 bash.enc:latest
|
||||
# DIGEST PLATFORM SIZE ENCRYPTION RECIPIENTS
|
||||
0 sha256:360be141b01f69b25427a9085b36ba8ad7d7a335449013fa6b32c1ecb894ab5b linux/amd64 2789669 jwe [jwe]
|
||||
1 sha256:ac601e66cdd275ee0e10afead03a2722e153a60982122d2d369880ea54fe82f8 linux/amd64 3174665 jwe [jwe]
|
||||
2 sha256:41e47064fd00424e328915ad2f7f716bd86ea2d0d8315edaf33ecaa6a2464530 linux/amd64 340 jwe [jwe]
|
||||
```
|
||||
|
||||
Start a local image registry so we can push the encrypted image to it. A recent versions of the registry is required
|
||||
to accept encrypted container images.
|
||||
```
|
||||
# docker pull registry:latest
|
||||
# docker run -d -p 5000:5000 --restart=always --name registry registry
|
||||
```
|
||||
|
||||
Push the encrypted image to the local registry, pull it using `ctr-enc`, and then run the image.
|
||||
```
|
||||
# $CTR images tag bash.enc:latest localhost:5000/bash.enc:latest
|
||||
# $CTR images push localhost:5000/bash.enc:latest
|
||||
# $CTR images rm localhost:5000/bash.enc:latest bash.enc:latest
|
||||
# $CTR images pull localhost:5000/bash.enc:latest
|
||||
# sudo $CTR run --rm localhost:5000/bash.enc:latest test echo 'Hello World!'
|
||||
ctr: you are not authorized to use this image: missing private key needed for decryption
|
||||
# sudo $CTR run --rm --key mykey.pem localhost:5000/bash.enc:latest test echo 'Hello World!'
|
||||
Hello World!
|
||||
```
|
||||
|
||||
## Project details
|
||||
|
||||
**imgcrypt** is a non-core containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
|
||||
As a containerd sub-project, you will find the:
|
||||
* [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
|
||||
* [Maintainers](MAINTAINERS),
|
||||
* and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
|
||||
|
||||
information in our [`containerd/project`](https://github.com/containerd/project) repository.
|
||||
39
vendor/github.com/containerd/imgcrypt/go.mod
generated
vendored
Normal file
39
vendor/github.com/containerd/imgcrypt/go.mod
generated
vendored
Normal file
@ -0,0 +1,39 @@
|
||||
module github.com/containerd/imgcrypt
|
||||
|
||||
go 1.13
|
||||
|
||||
require (
|
||||
github.com/Microsoft/go-winio v0.4.14
|
||||
github.com/Microsoft/hcsshim v0.8.7-0.20190325164909-8abdbb8205e4
|
||||
github.com/containerd/cgroups v0.0.0-20190717030353-c4b9ac5c7601 // indirect
|
||||
github.com/containerd/console v0.0.0-20181022165439-0650fd9eeb50
|
||||
github.com/containerd/containerd v1.3.0
|
||||
github.com/containerd/continuity v0.0.0-20190815185530-f2a389ac0a02 // indirect
|
||||
github.com/containerd/fifo v0.0.0-20180307165137-3d5202aec260 // indirect
|
||||
github.com/containerd/go-runc v0.0.0-20190911050354-e029b79d8cda // indirect
|
||||
github.com/containerd/ttrpc v0.0.0-20190828172938-92c8520ef9f8 // indirect
|
||||
github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd
|
||||
github.com/containers/ocicrypt v1.0.1
|
||||
github.com/coreos/go-systemd v0.0.0-20161114122254-48702e0da86b // indirect
|
||||
github.com/docker/distribution v2.7.1-0.20190205005809-0d3efadf0154+incompatible // indirect
|
||||
github.com/docker/go-events v0.0.0-20170721190031-9461782956ad // indirect
|
||||
github.com/docker/go-units v0.4.0 // indirect
|
||||
github.com/godbus/dbus v0.0.0-20151105175453-c7fdd8b5cd55 // indirect
|
||||
github.com/gogo/googleapis v1.2.0 // indirect
|
||||
github.com/gogo/protobuf v1.2.1
|
||||
github.com/imdario/mergo v0.3.8 // indirect
|
||||
github.com/opencontainers/go-digest v1.0.0-rc1.0.20180430190053-c9281466c8b2
|
||||
github.com/opencontainers/image-spec v1.0.1
|
||||
github.com/opencontainers/runc v1.0.0-rc8.0.20190926000215-3e425f80a8c9 // indirect
|
||||
github.com/opencontainers/runtime-spec v1.0.2-0.20190207185410-29686dbc5559
|
||||
github.com/pkg/errors v0.8.1
|
||||
github.com/prometheus/procfs v0.0.8 // indirect
|
||||
github.com/sirupsen/logrus v1.4.2
|
||||
github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2 // indirect
|
||||
github.com/urfave/cli v1.22.1
|
||||
go.etcd.io/bbolt v1.3.3 // indirect
|
||||
golang.org/x/net v0.0.0-20190522155817-f3200d17e092 // indirect
|
||||
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
|
||||
golang.org/x/sys v0.0.0-20190812073006-9eafafc0a87e // indirect
|
||||
google.golang.org/grpc v1.24.0
|
||||
)
|
||||
83
vendor/github.com/containerd/imgcrypt/images/encryption/client.go
generated
vendored
Normal file
83
vendor/github.com/containerd/imgcrypt/images/encryption/client.go
generated
vendored
Normal file
@ -0,0 +1,83 @@
|
||||
/*
|
||||
Copyright The containerd Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package encryption
|
||||
|
||||
import (
|
||||
"context"
|
||||
|
||||
"github.com/containerd/containerd"
|
||||
"github.com/containerd/containerd/containers"
|
||||
"github.com/containerd/containerd/diff"
|
||||
"github.com/containerd/containerd/errdefs"
|
||||
"github.com/containerd/imgcrypt"
|
||||
"github.com/containerd/typeurl"
|
||||
encconfig "github.com/containers/ocicrypt/config"
|
||||
"github.com/gogo/protobuf/types"
|
||||
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// WithDecryptedUnpack allows to pass parameters the 'layertool' needs to the applier
|
||||
func WithDecryptedUnpack(data *imgcrypt.Payload) diff.ApplyOpt {
|
||||
return func(_ context.Context, desc ocispec.Descriptor, c *diff.ApplyConfig) error {
|
||||
if c.ProcessorPayloads == nil {
|
||||
c.ProcessorPayloads = make(map[string]*types.Any)
|
||||
}
|
||||
data.Descriptor = desc
|
||||
any, err := typeurl.MarshalAny(data)
|
||||
if err != nil {
|
||||
return errors.Wrapf(err, "failed to marshal payload")
|
||||
}
|
||||
|
||||
for _, id := range imgcrypt.PayloadToolIDs {
|
||||
c.ProcessorPayloads[id] = any
|
||||
}
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// WithUnpackConfigApplyOpts allows to pass an ApplyOpt
|
||||
func WithUnpackConfigApplyOpts(opt diff.ApplyOpt) containerd.UnpackOpt {
|
||||
return func(_ context.Context, uc *containerd.UnpackConfig) error {
|
||||
uc.ApplyOpts = append(uc.ApplyOpts, opt)
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// WithUnpackOpts is used to add unpack options to the unpacker.
|
||||
func WithUnpackOpts(opts []containerd.UnpackOpt) containerd.RemoteOpt {
|
||||
return func(_ *containerd.Client, c *containerd.RemoteContext) error {
|
||||
c.UnpackOpts = append(c.UnpackOpts, opts...)
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// WithAuthorizationCheck checks the authorization of keys used for encrypted containers
|
||||
// be checked upon creation of a container
|
||||
func WithAuthorizationCheck(dc *encconfig.DecryptConfig) containerd.NewContainerOpts {
|
||||
return func(ctx context.Context, client *containerd.Client, c *containers.Container) error {
|
||||
image, err := client.ImageService().Get(ctx, c.Image)
|
||||
if errdefs.IsNotFound(err) {
|
||||
// allow creation of container without a existing image
|
||||
return nil
|
||||
} else if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return CheckAuthorization(ctx, client.ContentStore(), image.Target, dc)
|
||||
}
|
||||
}
|
||||
468
vendor/github.com/containerd/imgcrypt/images/encryption/encryption.go
generated
vendored
Normal file
468
vendor/github.com/containerd/imgcrypt/images/encryption/encryption.go
generated
vendored
Normal file
@ -0,0 +1,468 @@
|
||||
/*
|
||||
Copyright The containerd Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package encryption
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io"
|
||||
"math/rand"
|
||||
|
||||
"github.com/containerd/containerd/images"
|
||||
"github.com/containers/ocicrypt"
|
||||
encconfig "github.com/containers/ocicrypt/config"
|
||||
|
||||
"github.com/containerd/containerd/content"
|
||||
"github.com/containerd/containerd/errdefs"
|
||||
"github.com/containerd/containerd/platforms"
|
||||
encocispec "github.com/containers/ocicrypt/spec"
|
||||
digest "github.com/opencontainers/go-digest"
|
||||
specs "github.com/opencontainers/image-spec/specs-go"
|
||||
"github.com/pkg/errors"
|
||||
|
||||
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
||||
)
|
||||
|
||||
type cryptoOp int
|
||||
|
||||
const (
|
||||
cryptoOpEncrypt cryptoOp = iota
|
||||
cryptoOpDecrypt = iota
|
||||
cryptoOpUnwrapOnly = iota
|
||||
)
|
||||
|
||||
// LayerFilter allows to select Layers by certain criteria
|
||||
type LayerFilter func(desc ocispec.Descriptor) bool
|
||||
|
||||
// IsEncryptedDiff returns true if mediaType is a known encrypted media type.
|
||||
func IsEncryptedDiff(ctx context.Context, mediaType string) bool {
|
||||
switch mediaType {
|
||||
case encocispec.MediaTypeLayerGzipEnc, encocispec.MediaTypeLayerEnc:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// HasEncryptedLayer returns true if any LayerInfo indicates that the layer is encrypted
|
||||
func HasEncryptedLayer(ctx context.Context, layerInfos []ocispec.Descriptor) bool {
|
||||
for i := 0; i < len(layerInfos); i++ {
|
||||
if IsEncryptedDiff(ctx, layerInfos[i].MediaType) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// encryptLayer encrypts the layer using the CryptoConfig and creates a new OCI Descriptor.
|
||||
// A call to this function may also only manipulate the wrapped keys list.
|
||||
// The caller is expected to store the returned encrypted data and OCI Descriptor
|
||||
func encryptLayer(cc *encconfig.CryptoConfig, dataReader content.ReaderAt, desc ocispec.Descriptor) (ocispec.Descriptor, io.Reader, ocicrypt.EncryptLayerFinalizer, error) {
|
||||
var (
|
||||
size int64
|
||||
d digest.Digest
|
||||
err error
|
||||
)
|
||||
|
||||
encLayerReader, encLayerFinalizer, err := ocicrypt.EncryptLayer(cc.EncryptConfig, ocicrypt.ReaderFromReaderAt(dataReader), desc)
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, nil, nil, err
|
||||
}
|
||||
|
||||
// were data touched ?
|
||||
if encLayerReader != nil {
|
||||
size = 0
|
||||
d = ""
|
||||
} else {
|
||||
size = desc.Size
|
||||
d = desc.Digest
|
||||
}
|
||||
|
||||
newDesc := ocispec.Descriptor{
|
||||
Digest: d,
|
||||
Size: size,
|
||||
Platform: desc.Platform,
|
||||
}
|
||||
|
||||
switch desc.MediaType {
|
||||
case images.MediaTypeDockerSchema2LayerGzip:
|
||||
newDesc.MediaType = encocispec.MediaTypeLayerGzipEnc
|
||||
case images.MediaTypeDockerSchema2Layer:
|
||||
newDesc.MediaType = encocispec.MediaTypeLayerEnc
|
||||
case encocispec.MediaTypeLayerGzipEnc:
|
||||
newDesc.MediaType = encocispec.MediaTypeLayerGzipEnc
|
||||
case encocispec.MediaTypeLayerEnc:
|
||||
newDesc.MediaType = encocispec.MediaTypeLayerEnc
|
||||
|
||||
// TODO: Mediatypes to be added in ocispec
|
||||
case ocispec.MediaTypeImageLayerGzip:
|
||||
newDesc.MediaType = encocispec.MediaTypeLayerGzipEnc
|
||||
case ocispec.MediaTypeImageLayer:
|
||||
newDesc.MediaType = encocispec.MediaTypeLayerEnc
|
||||
|
||||
default:
|
||||
return ocispec.Descriptor{}, nil, nil, errors.Errorf("Encryption: unsupporter layer MediaType: %s\n", desc.MediaType)
|
||||
}
|
||||
|
||||
return newDesc, encLayerReader, encLayerFinalizer, nil
|
||||
}
|
||||
|
||||
// DecryptLayer decrypts the layer using the DecryptConfig and creates a new OCI Descriptor.
|
||||
// The caller is expected to store the returned plain data and OCI Descriptor
|
||||
func DecryptLayer(dc *encconfig.DecryptConfig, dataReader io.Reader, desc ocispec.Descriptor, unwrapOnly bool) (ocispec.Descriptor, io.Reader, digest.Digest, error) {
|
||||
resultReader, layerDigest, err := ocicrypt.DecryptLayer(dc, dataReader, desc, unwrapOnly)
|
||||
if err != nil || unwrapOnly {
|
||||
return ocispec.Descriptor{}, nil, "", err
|
||||
}
|
||||
|
||||
newDesc := ocispec.Descriptor{
|
||||
Size: 0,
|
||||
Platform: desc.Platform,
|
||||
}
|
||||
|
||||
switch desc.MediaType {
|
||||
case encocispec.MediaTypeLayerGzipEnc:
|
||||
newDesc.MediaType = images.MediaTypeDockerSchema2LayerGzip
|
||||
case encocispec.MediaTypeLayerEnc:
|
||||
newDesc.MediaType = images.MediaTypeDockerSchema2Layer
|
||||
default:
|
||||
return ocispec.Descriptor{}, nil, "", errors.Errorf("Decryption: unsupporter layer MediaType: %s\n", desc.MediaType)
|
||||
}
|
||||
return newDesc, resultReader, layerDigest, nil
|
||||
}
|
||||
|
||||
// decryptLayer decrypts the layer using the CryptoConfig and creates a new OCI Descriptor.
|
||||
// The caller is expected to store the returned plain data and OCI Descriptor
|
||||
func decryptLayer(cc *encconfig.CryptoConfig, dataReader content.ReaderAt, desc ocispec.Descriptor, unwrapOnly bool) (ocispec.Descriptor, io.Reader, error) {
|
||||
resultReader, d, err := ocicrypt.DecryptLayer(cc.DecryptConfig, ocicrypt.ReaderFromReaderAt(dataReader), desc, unwrapOnly)
|
||||
if err != nil || unwrapOnly {
|
||||
return ocispec.Descriptor{}, nil, err
|
||||
}
|
||||
|
||||
newDesc := ocispec.Descriptor{
|
||||
Digest: d,
|
||||
Size: 0,
|
||||
Platform: desc.Platform,
|
||||
}
|
||||
|
||||
switch desc.MediaType {
|
||||
case encocispec.MediaTypeLayerGzipEnc:
|
||||
newDesc.MediaType = images.MediaTypeDockerSchema2LayerGzip
|
||||
case encocispec.MediaTypeLayerEnc:
|
||||
newDesc.MediaType = images.MediaTypeDockerSchema2Layer
|
||||
default:
|
||||
return ocispec.Descriptor{}, nil, errors.Errorf("Decryption: unsupporter layer MediaType: %s\n", desc.MediaType)
|
||||
}
|
||||
return newDesc, resultReader, nil
|
||||
}
|
||||
|
||||
// cryptLayer handles the changes due to encryption or decryption of a layer
|
||||
func cryptLayer(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, cryptoOp cryptoOp) (ocispec.Descriptor, error) {
|
||||
var (
|
||||
resultReader io.Reader
|
||||
newDesc ocispec.Descriptor
|
||||
encLayerFinalizer ocicrypt.EncryptLayerFinalizer
|
||||
)
|
||||
|
||||
dataReader, err := cs.ReaderAt(ctx, desc)
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, err
|
||||
}
|
||||
defer dataReader.Close()
|
||||
|
||||
if cryptoOp == cryptoOpEncrypt {
|
||||
newDesc, resultReader, encLayerFinalizer, err = encryptLayer(cc, dataReader, desc)
|
||||
} else {
|
||||
newDesc, resultReader, err = decryptLayer(cc, dataReader, desc, cryptoOp == cryptoOpUnwrapOnly)
|
||||
}
|
||||
if err != nil || cryptoOp == cryptoOpUnwrapOnly {
|
||||
return ocispec.Descriptor{}, err
|
||||
}
|
||||
|
||||
newDesc.Annotations = ocicrypt.FilterOutAnnotations(desc.Annotations)
|
||||
|
||||
// some operations, such as changing recipients, may not touch the layer at all
|
||||
if resultReader != nil {
|
||||
var ref string
|
||||
// If we have the digest, write blob with checks
|
||||
haveDigest := newDesc.Digest.String() != ""
|
||||
if haveDigest {
|
||||
ref = fmt.Sprintf("layer-%s", newDesc.Digest.String())
|
||||
} else {
|
||||
ref = fmt.Sprintf("blob-%d-%d", rand.Int(), rand.Int())
|
||||
}
|
||||
|
||||
if haveDigest {
|
||||
if err := content.WriteBlob(ctx, cs, ref, resultReader, newDesc); err != nil {
|
||||
return ocispec.Descriptor{}, errors.Wrap(err, "failed to write config")
|
||||
}
|
||||
} else {
|
||||
newDesc.Digest, newDesc.Size, err = ingestReader(ctx, cs, ref, resultReader)
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// After performing encryption, call finalizer to get annotations
|
||||
if encLayerFinalizer != nil {
|
||||
annotations, err := encLayerFinalizer()
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, errors.Wrap(err, "Error getting annotations from encLayer finalizer")
|
||||
}
|
||||
for k, v := range annotations {
|
||||
newDesc.Annotations[k] = v
|
||||
}
|
||||
}
|
||||
return newDesc, err
|
||||
}
|
||||
|
||||
func ingestReader(ctx context.Context, cs content.Ingester, ref string, r io.Reader) (digest.Digest, int64, error) {
|
||||
cw, err := content.OpenWriter(ctx, cs, content.WithRef(ref))
|
||||
if err != nil {
|
||||
return "", 0, errors.Wrap(err, "failed to open writer")
|
||||
}
|
||||
defer cw.Close()
|
||||
|
||||
if _, err := content.CopyReader(cw, r); err != nil {
|
||||
return "", 0, errors.Wrap(err, "copy failed")
|
||||
}
|
||||
|
||||
st, err := cw.Status()
|
||||
if err != nil {
|
||||
return "", 0, errors.Wrap(err, "failed to get state")
|
||||
}
|
||||
|
||||
if err := cw.Commit(ctx, st.Offset, ""); err != nil {
|
||||
if !errdefs.IsAlreadyExists(err) {
|
||||
return "", 0, errors.Wrapf(err, "failed commit on ref %q", ref)
|
||||
}
|
||||
}
|
||||
|
||||
return cw.Digest(), st.Offset, nil
|
||||
}
|
||||
|
||||
// Encrypt or decrypt all the Children of a given descriptor
|
||||
func cryptChildren(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, lf LayerFilter, cryptoOp cryptoOp, thisPlatform *ocispec.Platform) (ocispec.Descriptor, bool, error) {
|
||||
children, err := images.Children(ctx, cs, desc)
|
||||
if err != nil {
|
||||
if errdefs.IsNotFound(err) {
|
||||
return desc, false, nil
|
||||
}
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
|
||||
var newLayers []ocispec.Descriptor
|
||||
var config ocispec.Descriptor
|
||||
modified := false
|
||||
|
||||
for _, child := range children {
|
||||
// we only encrypt child layers and have to update their parents if encryption happened
|
||||
switch child.MediaType {
|
||||
case images.MediaTypeDockerSchema2Config, ocispec.MediaTypeImageConfig:
|
||||
config = child
|
||||
case images.MediaTypeDockerSchema2LayerGzip, images.MediaTypeDockerSchema2Layer,
|
||||
ocispec.MediaTypeImageLayerGzip, ocispec.MediaTypeImageLayer:
|
||||
if cryptoOp == cryptoOpEncrypt && lf(child) {
|
||||
nl, err := cryptLayer(ctx, cs, child, cc, cryptoOp)
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
modified = true
|
||||
newLayers = append(newLayers, nl)
|
||||
} else {
|
||||
newLayers = append(newLayers, child)
|
||||
}
|
||||
case encocispec.MediaTypeLayerGzipEnc, encocispec.MediaTypeLayerEnc:
|
||||
// this one can be decrypted but also its recipients list changed
|
||||
if lf(child) {
|
||||
nl, err := cryptLayer(ctx, cs, child, cc, cryptoOp)
|
||||
if err != nil || cryptoOp == cryptoOpUnwrapOnly {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
modified = true
|
||||
newLayers = append(newLayers, nl)
|
||||
} else {
|
||||
newLayers = append(newLayers, child)
|
||||
}
|
||||
case images.MediaTypeDockerSchema2LayerForeign, images.MediaTypeDockerSchema2LayerForeignGzip:
|
||||
// never encrypt/decrypt
|
||||
newLayers = append(newLayers, child)
|
||||
default:
|
||||
return ocispec.Descriptor{}, false, errors.Errorf("bad/unhandled MediaType %s in encryptChildren\n", child.MediaType)
|
||||
}
|
||||
}
|
||||
|
||||
if modified && len(newLayers) > 0 {
|
||||
newManifest := ocispec.Manifest{
|
||||
Versioned: specs.Versioned{
|
||||
SchemaVersion: 2,
|
||||
},
|
||||
Config: config,
|
||||
Layers: newLayers,
|
||||
}
|
||||
|
||||
mb, err := json.MarshalIndent(newManifest, "", " ")
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, false, errors.Wrap(err, "failed to marshal image")
|
||||
}
|
||||
|
||||
newDesc := ocispec.Descriptor{
|
||||
MediaType: ocispec.MediaTypeImageManifest,
|
||||
Size: int64(len(mb)),
|
||||
Digest: digest.Canonical.FromBytes(mb),
|
||||
Platform: desc.Platform,
|
||||
}
|
||||
|
||||
labels := map[string]string{}
|
||||
labels["containerd.io/gc.ref.content.0"] = newManifest.Config.Digest.String()
|
||||
for i, ch := range newManifest.Layers {
|
||||
labels[fmt.Sprintf("containerd.io/gc.ref.content.%d", i+1)] = ch.Digest.String()
|
||||
}
|
||||
|
||||
ref := fmt.Sprintf("manifest-%s", newDesc.Digest.String())
|
||||
|
||||
if err := content.WriteBlob(ctx, cs, ref, bytes.NewReader(mb), newDesc, content.WithLabels(labels)); err != nil {
|
||||
return ocispec.Descriptor{}, false, errors.Wrap(err, "failed to write config")
|
||||
}
|
||||
return newDesc, true, nil
|
||||
}
|
||||
|
||||
return desc, modified, nil
|
||||
}
|
||||
|
||||
// cryptManifest encrypts or decrypts the children of a top level manifest
|
||||
func cryptManifest(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, lf LayerFilter, cryptoOp cryptoOp) (ocispec.Descriptor, bool, error) {
|
||||
p, err := content.ReadBlob(ctx, cs, desc)
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
var manifest ocispec.Manifest
|
||||
if err := json.Unmarshal(p, &manifest); err != nil {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
platform := platforms.DefaultSpec()
|
||||
newDesc, modified, err := cryptChildren(ctx, cs, desc, cc, lf, cryptoOp, &platform)
|
||||
if err != nil || cryptoOp == cryptoOpUnwrapOnly {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
return newDesc, modified, nil
|
||||
}
|
||||
|
||||
// cryptManifestList encrypts or decrypts the children of a top level manifest list
|
||||
func cryptManifestList(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, lf LayerFilter, cryptoOp cryptoOp) (ocispec.Descriptor, bool, error) {
|
||||
// read the index; if any layer is encrypted and any manifests change we will need to rewrite it
|
||||
b, err := content.ReadBlob(ctx, cs, desc)
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
|
||||
var index ocispec.Index
|
||||
if err := json.Unmarshal(b, &index); err != nil {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
|
||||
var newManifests []ocispec.Descriptor
|
||||
modified := false
|
||||
for _, manifest := range index.Manifests {
|
||||
newManifest, m, err := cryptChildren(ctx, cs, manifest, cc, lf, cryptoOp, manifest.Platform)
|
||||
if err != nil || cryptoOp == cryptoOpUnwrapOnly {
|
||||
return ocispec.Descriptor{}, false, err
|
||||
}
|
||||
if m {
|
||||
modified = true
|
||||
}
|
||||
newManifests = append(newManifests, newManifest)
|
||||
}
|
||||
|
||||
if modified {
|
||||
// we need to update the index
|
||||
newIndex := ocispec.Index{
|
||||
Versioned: index.Versioned,
|
||||
Manifests: newManifests,
|
||||
}
|
||||
|
||||
mb, err := json.MarshalIndent(newIndex, "", " ")
|
||||
if err != nil {
|
||||
return ocispec.Descriptor{}, false, errors.Wrap(err, "failed to marshal index")
|
||||
}
|
||||
|
||||
newDesc := ocispec.Descriptor{
|
||||
MediaType: ocispec.MediaTypeImageIndex,
|
||||
Size: int64(len(mb)),
|
||||
Digest: digest.Canonical.FromBytes(mb),
|
||||
}
|
||||
|
||||
labels := map[string]string{}
|
||||
for i, m := range newIndex.Manifests {
|
||||
labels[fmt.Sprintf("containerd.io/gc.ref.content.%d", i)] = m.Digest.String()
|
||||
}
|
||||
|
||||
ref := fmt.Sprintf("index-%s", newDesc.Digest.String())
|
||||
|
||||
if err = content.WriteBlob(ctx, cs, ref, bytes.NewReader(mb), newDesc, content.WithLabels(labels)); err != nil {
|
||||
return ocispec.Descriptor{}, false, errors.Wrap(err, "failed to write index")
|
||||
}
|
||||
return newDesc, true, nil
|
||||
}
|
||||
|
||||
return desc, false, nil
|
||||
}
|
||||
|
||||
// cryptImage is the dispatcher to encrypt/decrypt an image; it accepts either an OCI descriptor
|
||||
// representing a manifest list or a single manifest
|
||||
func cryptImage(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, lf LayerFilter, cryptoOp cryptoOp) (ocispec.Descriptor, bool, error) {
|
||||
if cc == nil {
|
||||
return ocispec.Descriptor{}, false, errors.Wrapf(errdefs.ErrInvalidArgument, "CryptoConfig must not be nil")
|
||||
}
|
||||
switch desc.MediaType {
|
||||
case ocispec.MediaTypeImageIndex, images.MediaTypeDockerSchema2ManifestList:
|
||||
return cryptManifestList(ctx, cs, desc, cc, lf, cryptoOp)
|
||||
case ocispec.MediaTypeImageManifest, images.MediaTypeDockerSchema2Manifest:
|
||||
return cryptManifest(ctx, cs, desc, cc, lf, cryptoOp)
|
||||
default:
|
||||
return ocispec.Descriptor{}, false, errors.Errorf("CryptImage: Unhandled media type: %s", desc.MediaType)
|
||||
}
|
||||
}
|
||||
|
||||
// EncryptImage encrypts an image; it accepts either an OCI descriptor representing a manifest list or a single manifest
|
||||
func EncryptImage(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, lf LayerFilter) (ocispec.Descriptor, bool, error) {
|
||||
return cryptImage(ctx, cs, desc, cc, lf, cryptoOpEncrypt)
|
||||
}
|
||||
|
||||
// DecryptImage decrypts an image; it accepts either an OCI descriptor representing a manifest list or a single manifest
|
||||
func DecryptImage(ctx context.Context, cs content.Store, desc ocispec.Descriptor, cc *encconfig.CryptoConfig, lf LayerFilter) (ocispec.Descriptor, bool, error) {
|
||||
return cryptImage(ctx, cs, desc, cc, lf, cryptoOpDecrypt)
|
||||
}
|
||||
|
||||
// CheckAuthorization checks whether a user has the right keys to be allowed to access an image (every layer)
|
||||
// It takes decrypting of the layers only as far as decrypting the asymmetrically encrypted data
|
||||
// The decryption is only done for the current platform
|
||||
func CheckAuthorization(ctx context.Context, cs content.Store, desc ocispec.Descriptor, dc *encconfig.DecryptConfig) error {
|
||||
cc := encconfig.InitDecryption(dc.Parameters)
|
||||
|
||||
lf := func(desc ocispec.Descriptor) bool {
|
||||
return true
|
||||
}
|
||||
|
||||
_, _, err := cryptImage(ctx, cs, desc, &cc, lf, cryptoOpUnwrapOnly)
|
||||
if err != nil {
|
||||
return errors.Wrapf(err, "you are not authorized to use this image")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
43
vendor/github.com/containerd/imgcrypt/payload.go
generated
vendored
Normal file
43
vendor/github.com/containerd/imgcrypt/payload.go
generated
vendored
Normal file
@ -0,0 +1,43 @@
|
||||
/*
|
||||
Copyright The containerd Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package imgcrypt
|
||||
|
||||
import (
|
||||
"github.com/containerd/typeurl"
|
||||
encconfig "github.com/containers/ocicrypt/config"
|
||||
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
||||
)
|
||||
|
||||
const (
|
||||
PayloadURI = "io.containerd.ocicrypt.v1.Payload"
|
||||
)
|
||||
|
||||
var PayloadToolIDs = []string{
|
||||
"io.containerd.ocicrypt.decoder.v1.tar",
|
||||
"io.containerd.ocicrypt.decoder.v1.tar.gzip",
|
||||
}
|
||||
|
||||
func init() {
|
||||
typeurl.Register(&Payload{}, PayloadURI)
|
||||
}
|
||||
|
||||
// Payload holds data that the external layer decryption tool
|
||||
// needs for decrypting a layer
|
||||
type Payload struct {
|
||||
DecryptConfig encconfig.DecryptConfig
|
||||
Descriptor ocispec.Descriptor
|
||||
}
|
||||
45
vendor/github.com/containerd/imgcrypt/vendor.conf
generated
vendored
Normal file
45
vendor/github.com/containerd/imgcrypt/vendor.conf
generated
vendored
Normal file
@ -0,0 +1,45 @@
|
||||
github.com/containerd/containerd v1.3.0
|
||||
github.com/containerd/cgroups c4b9ac5c7601384c965b9646fc515884e091ebb9
|
||||
github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
|
||||
github.com/containerd/fifo 3d5202aec260678c48179c56f40e6f38a095738c
|
||||
github.com/containerd/continuity f2a389ac0a02ce21c09edd7344677a601970f41c
|
||||
github.com/containerd/console 0650fd9eeb50bab4fc99dceb9f2e14cf58f36e7f
|
||||
github.com/containerd/go-runc e029b79d8cda8374981c64eba71f28ec38e5526f
|
||||
github.com/gogo/protobuf v1.2.1
|
||||
github.com/gogo/googleapis v1.2.0
|
||||
github.com/coreos/go-systemd 48702e0da86bd25e76cfef347e2adeb434a0d0a6
|
||||
github.com/docker/distribution 0d3efadf0154c2b8a4e7b6621fff9809655cc580
|
||||
github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
|
||||
github.com/docker/go-units v0.4.0
|
||||
github.com/godbus/dbus c7fdd8b5cd55e87b4e1f4e372cdb1db61dd6c66f
|
||||
github.com/sirupsen/logrus v1.4.1
|
||||
github.com/opencontainers/go-digest c9281466c8b2f606084ac71339773efd177436e7
|
||||
github.com/opencontainers/image-spec v1.0.1
|
||||
github.com/opencontainers/runc 3e425f80a8c931f88e6d94a8c831b9d5aa481657
|
||||
github.com/opencontainers/runtime-spec 29686dbc5559d93fb1ef402eeda3e35c38d75af4 # v1.0.1-59-g29686db
|
||||
golang.org/x/sys 9eafafc0a87e0fd0aeeba439a4573537970c44c7 https://github.com/golang/sys
|
||||
golang.org/x/net f3200d17e092c607f615320ecaad13d87ad9a2b3
|
||||
golang.org/x/crypto 5c40567a22f818bd14a1ea7245dad9f8ef0691aa
|
||||
golang.org/x/sync 42b317875d0fa942474b76e1b46a6060d720ae6e
|
||||
golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
|
||||
github.com/pkg/errors v0.8.1
|
||||
google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
|
||||
google.golang.org/grpc 6eaf6f47437a6b4e2153a190160ef39a92c7eceb # v1.23.0
|
||||
github.com/syndtr/gocapability d98352740cb2c55f81556b63d4a1ec64c5a319c2
|
||||
github.com/golang/protobuf v1.2.0
|
||||
github.com/containerd/ttrpc 92c8520ef9f86600c650dd540266a007bf03670f
|
||||
github.com/urfave/cli v1.22.0
|
||||
github.com/cpuguy83/go-md2man v1.0.10
|
||||
github.com/russross/blackfriday v1.5.2
|
||||
|
||||
# image encryption dependencies
|
||||
github.com/containers/ocicrypt b87a4a69c741007e2e8c713732c3e3da76f99dab
|
||||
|
||||
# windows
|
||||
github.com/Microsoft/go-winio v0.4.14
|
||||
github.com/Microsoft/hcsshim 8abdbb8205e4192c68b5f84c31197156f31be517
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1
|
||||
|
||||
# encryption dependencies
|
||||
gopkg.in/square/go-jose.v2 v2.3.1 https://github.com/square/go-jose.git
|
||||
github.com/fullsailor/pkcs7 8306686428a5fe132eac8cb7c4848af725098bd4
|
||||
189
vendor/github.com/containers/ocicrypt/LICENSE
generated
vendored
Normal file
189
vendor/github.com/containers/ocicrypt/LICENSE
generated
vendored
Normal file
@ -0,0 +1,189 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
https://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
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outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
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|
||||
"Source" form shall mean the preferred form for making modifications,
|
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|
||||
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|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
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|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
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|
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|
||||
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|
||||
|
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"Derivative Works" shall mean any work, whether in Source or Object
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|
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"Contribution" shall mean any work of authorship, including
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2. Grant of Copyright License. Subject to the terms and conditions of
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4. Redistribution. You may reproduce and distribute copies of the
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(d) If the Work includes a "NOTICE" text file as part of its
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do not modify the License. You may add Your own attribution
|
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notices within Derivative Works that You distribute, alongside
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||||
or as an addendum to the NOTICE text from the Work, provided
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You may add Your own copyright statement to Your modifications and
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|
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|
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5. Submission of Contributions. Unless You explicitly state otherwise,
|
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any Contribution intentionally submitted for inclusion in the Work
|
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by You to the Licensor shall be under the terms and conditions of
|
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Notwithstanding the above, nothing herein shall supersede or modify
|
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the terms of any separate license agreement you may have executed
|
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with Licensor regarding such Contributions.
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|
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6. Trademarks. This License does not grant permission to use the trade
|
||||
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|
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|
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7. Disclaimer of Warranty. Unless required by applicable law or
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|
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|
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8. Limitation of Liability. In no event and under no legal theory,
|
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|
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unless required by applicable law (such as deliberate and grossly
|
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9. Accepting Warranty or Additional Liability. While redistributing
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|
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END OF TERMS AND CONDITIONS
|
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|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
https://www.apache.org/licenses/LICENSE-2.0
|
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|
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Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
32
vendor/github.com/containers/ocicrypt/README.md
generated
vendored
Normal file
32
vendor/github.com/containers/ocicrypt/README.md
generated
vendored
Normal file
@ -0,0 +1,32 @@
|
||||
# OCIcrypt Library
|
||||
|
||||
The `ocicrypt` library is the OCI image spec implementation of container image encryption. More details of the spec can be seen in the [OCI repository](https://github.com/opencontainers/image-spec/pull/775). The purpose of this library is to encode spec structures and consts in code, as well as provide a consistent implementation of image encryption across container runtimes and build tools.
|
||||
|
||||
## Usage
|
||||
|
||||
There are various levels of usage for this library. The main consumers of these would be runtime/buil tools, and a more specific use would be in the ability to extend cryptographic function.
|
||||
|
||||
### Runtime/Build tool usage
|
||||
|
||||
The general exposed interface a runtime/build tool would use, would be to perform encryption or decryption of layers:
|
||||
|
||||
```
|
||||
package "github.com/containers/ocicrypt"
|
||||
func EncryptLayer(ec *config.EncryptConfig, encOrPlainLayerReader io.Reader, desc ocispec.Descriptor) (io.Reader, EncryptLayerFinalizer, error)
|
||||
func DecryptLayer(dc *config.DecryptConfig, encLayerReader io.Reader, desc ocispec.Descriptor, unwrapOnly bool) (io.Reader, digest.Digest, error)
|
||||
```
|
||||
|
||||
The settings/parameters to these functions can be specified via creation of an encryption config with the `github.com/containers/ocicrypt/config` package. We note that because setting of annotations and other fields of the layer descriptor is done through various means in different runtimes/build tools, it is the resposibility of the caller to still ensure that the layer descriptor follows the OCI specification (i.e. encoding, setting annotations, etc.).
|
||||
|
||||
|
||||
### Crypto Agility and Extensibility
|
||||
|
||||
The implementation for both symmetric and assymetric encryption used in this library are behind 2 main interfaces, which users can extend if need be. These are in the following packages:
|
||||
- github.com/containers/ocicrypt/blockcipher - LayerBlockCipher interface for block ciphers
|
||||
- github.com/containers/ocicrypt/keywrap - KeyWrapper interface for key wrapping
|
||||
|
||||
We note that adding interfaces here is risky outside the OCI spec is not recommended, unless for very specialized and confined usecases. Please open an issue or PR if there is a general usecase that could be added to the OCI spec.
|
||||
|
||||
## Security Issues
|
||||
|
||||
We consider security issues related to this library critical. Please report and security related issues by emailing maintainers in the [MAINTAINERS](MAINTAINERS) file.
|
||||
160
vendor/github.com/containers/ocicrypt/blockcipher/blockcipher.go
generated
vendored
Normal file
160
vendor/github.com/containers/ocicrypt/blockcipher/blockcipher.go
generated
vendored
Normal file
@ -0,0 +1,160 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package blockcipher
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"github.com/opencontainers/go-digest"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// LayerCipherType is the ciphertype as specified in the layer metadata
|
||||
type LayerCipherType string
|
||||
|
||||
// TODO: Should be obtained from OCI spec once included
|
||||
const (
|
||||
AES256CTR LayerCipherType = "AES_256_CTR_HMAC_SHA256"
|
||||
)
|
||||
|
||||
// PrivateLayerBlockCipherOptions includes the information required to encrypt/decrypt
|
||||
// an image which are sensitive and should not be in plaintext
|
||||
type PrivateLayerBlockCipherOptions struct {
|
||||
// SymmetricKey represents the symmetric key used for encryption/decryption
|
||||
// This field should be populated by Encrypt/Decrypt calls
|
||||
SymmetricKey []byte `json:"symkey"`
|
||||
|
||||
// Digest is the digest of the original data for verification.
|
||||
// This is NOT populated by Encrypt/Decrypt calls
|
||||
Digest digest.Digest `json:"digest"`
|
||||
|
||||
// CipherOptions contains the cipher metadata used for encryption/decryption
|
||||
// This field should be populated by Encrypt/Decrypt calls
|
||||
CipherOptions map[string][]byte `json:"cipheroptions"`
|
||||
}
|
||||
|
||||
// PublicLayerBlockCipherOptions includes the information required to encrypt/decrypt
|
||||
// an image which are public and can be deduplicated in plaintext across multiple
|
||||
// recipients
|
||||
type PublicLayerBlockCipherOptions struct {
|
||||
// CipherType denotes the cipher type according to the list of OCI suppported
|
||||
// cipher types.
|
||||
CipherType LayerCipherType `json:"cipher"`
|
||||
|
||||
// Hmac contains the hmac string to help verify encryption
|
||||
Hmac []byte `json:"hmac"`
|
||||
|
||||
// CipherOptions contains the cipher metadata used for encryption/decryption
|
||||
// This field should be populated by Encrypt/Decrypt calls
|
||||
CipherOptions map[string][]byte `json:"cipheroptions"`
|
||||
}
|
||||
|
||||
// LayerBlockCipherOptions contains the public and private LayerBlockCipherOptions
|
||||
// required to encrypt/decrypt an image
|
||||
type LayerBlockCipherOptions struct {
|
||||
Public PublicLayerBlockCipherOptions
|
||||
Private PrivateLayerBlockCipherOptions
|
||||
}
|
||||
|
||||
// LayerBlockCipher returns a provider for encrypt/decrypt functionality
|
||||
// for handling the layer data for a specific algorithm
|
||||
type LayerBlockCipher interface {
|
||||
// GenerateKey creates a symmetric key
|
||||
GenerateKey() ([]byte, error)
|
||||
// Encrypt takes in layer data and returns the ciphertext and relevant LayerBlockCipherOptions
|
||||
Encrypt(layerDataReader io.Reader, opt LayerBlockCipherOptions) (io.Reader, Finalizer, error)
|
||||
// Decrypt takes in layer ciphertext data and returns the plaintext and relevant LayerBlockCipherOptions
|
||||
Decrypt(layerDataReader io.Reader, opt LayerBlockCipherOptions) (io.Reader, LayerBlockCipherOptions, error)
|
||||
}
|
||||
|
||||
// LayerBlockCipherHandler is the handler for encrypt/decrypt for layers
|
||||
type LayerBlockCipherHandler struct {
|
||||
cipherMap map[LayerCipherType]LayerBlockCipher
|
||||
}
|
||||
|
||||
// Finalizer is called after data blobs are written, and returns the LayerBlockCipherOptions for the encrypted blob
|
||||
type Finalizer func() (LayerBlockCipherOptions, error)
|
||||
|
||||
// GetOpt returns the value of the cipher option and if the option exists
|
||||
func (lbco LayerBlockCipherOptions) GetOpt(key string) (value []byte, ok bool) {
|
||||
if v, ok := lbco.Public.CipherOptions[key]; ok {
|
||||
return v, ok
|
||||
} else if v, ok := lbco.Private.CipherOptions[key]; ok {
|
||||
return v, ok
|
||||
} else {
|
||||
return nil, false
|
||||
}
|
||||
}
|
||||
|
||||
func wrapFinalizerWithType(fin Finalizer, typ LayerCipherType) Finalizer {
|
||||
return func() (LayerBlockCipherOptions, error) {
|
||||
lbco, err := fin()
|
||||
if err != nil {
|
||||
return LayerBlockCipherOptions{}, err
|
||||
}
|
||||
lbco.Public.CipherType = typ
|
||||
return lbco, err
|
||||
}
|
||||
}
|
||||
|
||||
// Encrypt is the handler for the layer decryption routine
|
||||
func (h *LayerBlockCipherHandler) Encrypt(plainDataReader io.Reader, typ LayerCipherType) (io.Reader, Finalizer, error) {
|
||||
if c, ok := h.cipherMap[typ]; ok {
|
||||
sk, err := c.GenerateKey()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
opt := LayerBlockCipherOptions{
|
||||
Private: PrivateLayerBlockCipherOptions{
|
||||
SymmetricKey: sk,
|
||||
},
|
||||
}
|
||||
encDataReader, fin, err := c.Encrypt(plainDataReader, opt)
|
||||
if err == nil {
|
||||
fin = wrapFinalizerWithType(fin, typ)
|
||||
}
|
||||
return encDataReader, fin, err
|
||||
}
|
||||
return nil, nil, errors.Errorf("unsupported cipher type: %s", typ)
|
||||
}
|
||||
|
||||
// Decrypt is the handler for the layer decryption routine
|
||||
func (h *LayerBlockCipherHandler) Decrypt(encDataReader io.Reader, opt LayerBlockCipherOptions) (io.Reader, LayerBlockCipherOptions, error) {
|
||||
typ := opt.Public.CipherType
|
||||
if typ == "" {
|
||||
return nil, LayerBlockCipherOptions{}, errors.New("no cipher type provided")
|
||||
}
|
||||
if c, ok := h.cipherMap[LayerCipherType(typ)]; ok {
|
||||
return c.Decrypt(encDataReader, opt)
|
||||
}
|
||||
return nil, LayerBlockCipherOptions{}, errors.Errorf("unsupported cipher type: %s", typ)
|
||||
}
|
||||
|
||||
// NewLayerBlockCipherHandler returns a new default handler
|
||||
func NewLayerBlockCipherHandler() (*LayerBlockCipherHandler, error) {
|
||||
h := LayerBlockCipherHandler{
|
||||
cipherMap: map[LayerCipherType]LayerBlockCipher{},
|
||||
}
|
||||
|
||||
var err error
|
||||
h.cipherMap[AES256CTR], err = NewAESCTRLayerBlockCipher(256)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "unable to set up Cipher AES-256-CTR")
|
||||
}
|
||||
|
||||
return &h, nil
|
||||
}
|
||||
193
vendor/github.com/containers/ocicrypt/blockcipher/blockcipher_aes_ctr.go
generated
vendored
Normal file
193
vendor/github.com/containers/ocicrypt/blockcipher/blockcipher_aes_ctr.go
generated
vendored
Normal file
@ -0,0 +1,193 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package blockcipher
|
||||
|
||||
import (
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"crypto/hmac"
|
||||
"crypto/rand"
|
||||
"crypto/sha256"
|
||||
"fmt"
|
||||
"hash"
|
||||
"io"
|
||||
|
||||
"github.com/containers/ocicrypt/utils"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// AESCTRLayerBlockCipher implements the AES CTR stream cipher
|
||||
type AESCTRLayerBlockCipher struct {
|
||||
keylen int // in bytes
|
||||
reader io.Reader
|
||||
encrypt bool
|
||||
stream cipher.Stream
|
||||
err error
|
||||
hmac hash.Hash
|
||||
expHmac []byte
|
||||
doneEncrypting bool
|
||||
}
|
||||
|
||||
type aesctrcryptor struct {
|
||||
bc *AESCTRLayerBlockCipher
|
||||
}
|
||||
|
||||
// NewAESCTRLayerBlockCipher returns a new AES SIV block cipher of 256 or 512 bits
|
||||
func NewAESCTRLayerBlockCipher(bits int) (LayerBlockCipher, error) {
|
||||
if bits != 256 {
|
||||
return nil, errors.New("AES CTR bit count not supported")
|
||||
}
|
||||
return &AESCTRLayerBlockCipher{keylen: bits / 8}, nil
|
||||
}
|
||||
|
||||
func (r *aesctrcryptor) Read(p []byte) (int, error) {
|
||||
var (
|
||||
o int
|
||||
)
|
||||
|
||||
if r.bc.err != nil {
|
||||
return 0, r.bc.err
|
||||
}
|
||||
|
||||
o, err := utils.FillBuffer(r.bc.reader, p)
|
||||
if err != nil {
|
||||
if err == io.EOF {
|
||||
r.bc.err = err
|
||||
} else {
|
||||
return 0, err
|
||||
}
|
||||
}
|
||||
|
||||
if !r.bc.encrypt {
|
||||
if _, err := r.bc.hmac.Write(p[:o]); err != nil {
|
||||
r.bc.err = errors.Wrapf(err, "could not write to hmac")
|
||||
return 0, r.bc.err
|
||||
}
|
||||
|
||||
if r.bc.err == io.EOF {
|
||||
// Before we return EOF we let the HMAC comparison
|
||||
// provide a verdict
|
||||
if !hmac.Equal(r.bc.hmac.Sum(nil), r.bc.expHmac) {
|
||||
r.bc.err = fmt.Errorf("could not properly decrypt byte stream; exp hmac: '%x', actual hmac: '%s'", r.bc.expHmac, r.bc.hmac.Sum(nil))
|
||||
return 0, r.bc.err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
r.bc.stream.XORKeyStream(p[:o], p[:o])
|
||||
|
||||
if r.bc.encrypt {
|
||||
if _, err := r.bc.hmac.Write(p[:o]); err != nil {
|
||||
r.bc.err = errors.Wrapf(err, "could not write to hmac")
|
||||
return 0, r.bc.err
|
||||
}
|
||||
|
||||
if r.bc.err == io.EOF {
|
||||
// Final data encrypted; Do the 'then-MAC' part
|
||||
r.bc.doneEncrypting = true
|
||||
}
|
||||
}
|
||||
|
||||
return o, r.bc.err
|
||||
}
|
||||
|
||||
// init initializes an instance
|
||||
func (bc *AESCTRLayerBlockCipher) init(encrypt bool, reader io.Reader, opts LayerBlockCipherOptions) (LayerBlockCipherOptions, error) {
|
||||
var (
|
||||
err error
|
||||
)
|
||||
|
||||
key := opts.Private.SymmetricKey
|
||||
if len(key) != bc.keylen {
|
||||
return LayerBlockCipherOptions{}, fmt.Errorf("invalid key length of %d bytes; need %d bytes", len(key), bc.keylen)
|
||||
}
|
||||
|
||||
nonce, ok := opts.GetOpt("nonce")
|
||||
if !ok {
|
||||
nonce = make([]byte, aes.BlockSize)
|
||||
if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
|
||||
return LayerBlockCipherOptions{}, errors.Wrap(err, "unable to generate random nonce")
|
||||
}
|
||||
}
|
||||
|
||||
block, err := aes.NewCipher(key)
|
||||
if err != nil {
|
||||
return LayerBlockCipherOptions{}, errors.Wrap(err, "aes.NewCipher failed")
|
||||
}
|
||||
|
||||
bc.reader = reader
|
||||
bc.encrypt = encrypt
|
||||
bc.stream = cipher.NewCTR(block, nonce)
|
||||
bc.err = nil
|
||||
bc.hmac = hmac.New(sha256.New, key)
|
||||
bc.expHmac = opts.Public.Hmac
|
||||
bc.doneEncrypting = false
|
||||
|
||||
if !encrypt && len(bc.expHmac) == 0 {
|
||||
return LayerBlockCipherOptions{}, errors.New("HMAC is not provided for decryption process")
|
||||
}
|
||||
|
||||
lbco := LayerBlockCipherOptions{
|
||||
Private: PrivateLayerBlockCipherOptions{
|
||||
SymmetricKey: key,
|
||||
CipherOptions: map[string][]byte{
|
||||
"nonce": nonce,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
return lbco, nil
|
||||
}
|
||||
|
||||
// GenerateKey creates a synmmetric key
|
||||
func (bc *AESCTRLayerBlockCipher) GenerateKey() ([]byte, error) {
|
||||
key := make([]byte, bc.keylen)
|
||||
if _, err := io.ReadFull(rand.Reader, key); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return key, nil
|
||||
}
|
||||
|
||||
// Encrypt takes in layer data and returns the ciphertext and relevant LayerBlockCipherOptions
|
||||
func (bc *AESCTRLayerBlockCipher) Encrypt(plainDataReader io.Reader, opt LayerBlockCipherOptions) (io.Reader, Finalizer, error) {
|
||||
lbco, err := bc.init(true, plainDataReader, opt)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
finalizer := func() (LayerBlockCipherOptions, error) {
|
||||
if !bc.doneEncrypting {
|
||||
return LayerBlockCipherOptions{}, errors.New("Read()ing not complete, unable to finalize")
|
||||
}
|
||||
if lbco.Public.CipherOptions == nil {
|
||||
lbco.Public.CipherOptions = map[string][]byte{}
|
||||
}
|
||||
lbco.Public.Hmac = bc.hmac.Sum(nil)
|
||||
return lbco, nil
|
||||
}
|
||||
return &aesctrcryptor{bc}, finalizer, nil
|
||||
}
|
||||
|
||||
// Decrypt takes in layer ciphertext data and returns the plaintext and relevant LayerBlockCipherOptions
|
||||
func (bc *AESCTRLayerBlockCipher) Decrypt(encDataReader io.Reader, opt LayerBlockCipherOptions) (io.Reader, LayerBlockCipherOptions, error) {
|
||||
lbco, err := bc.init(false, encDataReader, opt)
|
||||
if err != nil {
|
||||
return nil, LayerBlockCipherOptions{}, err
|
||||
}
|
||||
|
||||
return utils.NewDelayedReader(&aesctrcryptor{bc}, 1024*10), lbco, nil
|
||||
}
|
||||
114
vendor/github.com/containers/ocicrypt/config/config.go
generated
vendored
Normal file
114
vendor/github.com/containers/ocicrypt/config/config.go
generated
vendored
Normal file
@ -0,0 +1,114 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package config
|
||||
|
||||
// EncryptConfig is the container image PGP encryption configuration holding
|
||||
// the identifiers of those that will be able to decrypt the container and
|
||||
// the PGP public keyring file data that contains their public keys.
|
||||
type EncryptConfig struct {
|
||||
// map holding 'gpg-recipients', 'gpg-pubkeyringfile', 'pubkeys', 'x509s'
|
||||
Parameters map[string][][]byte
|
||||
|
||||
DecryptConfig DecryptConfig
|
||||
}
|
||||
|
||||
// DecryptConfig wraps the Parameters map that holds the decryption key
|
||||
type DecryptConfig struct {
|
||||
// map holding 'privkeys', 'x509s', 'gpg-privatekeys'
|
||||
Parameters map[string][][]byte
|
||||
}
|
||||
|
||||
// CryptoConfig is a common wrapper for EncryptConfig and DecrypConfig that can
|
||||
// be passed through functions that share much code for encryption and decryption
|
||||
type CryptoConfig struct {
|
||||
EncryptConfig *EncryptConfig
|
||||
DecryptConfig *DecryptConfig
|
||||
}
|
||||
|
||||
// InitDecryption initialized a CryptoConfig object with parameters used for decryption
|
||||
func InitDecryption(dcparameters map[string][][]byte) CryptoConfig {
|
||||
return CryptoConfig{
|
||||
DecryptConfig: &DecryptConfig{
|
||||
Parameters: dcparameters,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// InitEncryption initializes a CryptoConfig object with parameters used for encryption
|
||||
// It also takes dcparameters that may be needed for decryption when adding a recipient
|
||||
// to an already encrypted image
|
||||
func InitEncryption(parameters, dcparameters map[string][][]byte) CryptoConfig {
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: parameters,
|
||||
DecryptConfig: DecryptConfig{
|
||||
Parameters: dcparameters,
|
||||
},
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// CombineCryptoConfigs takes a CryptoConfig list and creates a single CryptoConfig
|
||||
// containing the crypto configuration of all the key bundles
|
||||
func CombineCryptoConfigs(ccs []CryptoConfig) CryptoConfig {
|
||||
ecparam := map[string][][]byte{}
|
||||
ecdcparam := map[string][][]byte{}
|
||||
dcparam := map[string][][]byte{}
|
||||
|
||||
for _, cc := range ccs {
|
||||
if ec := cc.EncryptConfig; ec != nil {
|
||||
addToMap(ecparam, ec.Parameters)
|
||||
addToMap(ecdcparam, ec.DecryptConfig.Parameters)
|
||||
}
|
||||
|
||||
if dc := cc.DecryptConfig; dc != nil {
|
||||
addToMap(dcparam, dc.Parameters)
|
||||
}
|
||||
}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ecparam,
|
||||
DecryptConfig: DecryptConfig{
|
||||
Parameters: ecdcparam,
|
||||
},
|
||||
},
|
||||
DecryptConfig: &DecryptConfig{
|
||||
Parameters: dcparam,
|
||||
},
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// AttachDecryptConfig adds DecryptConfig to the field of EncryptConfig so that
|
||||
// the decryption parameters can be used to add recipients to an existing image
|
||||
// if the user is able to decrypt it.
|
||||
func (ec *EncryptConfig) AttachDecryptConfig(dc *DecryptConfig) {
|
||||
if dc != nil {
|
||||
addToMap(ec.DecryptConfig.Parameters, dc.Parameters)
|
||||
}
|
||||
}
|
||||
|
||||
func addToMap(orig map[string][][]byte, add map[string][][]byte) {
|
||||
for k, v := range add {
|
||||
if ov, ok := orig[k]; ok {
|
||||
orig[k] = append(ov, v...)
|
||||
} else {
|
||||
orig[k] = v
|
||||
}
|
||||
}
|
||||
}
|
||||
134
vendor/github.com/containers/ocicrypt/config/constructors.go
generated
vendored
Normal file
134
vendor/github.com/containers/ocicrypt/config/constructors.go
generated
vendored
Normal file
@ -0,0 +1,134 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package config
|
||||
|
||||
import (
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// EncryptWithJwe returns a CryptoConfig to encrypt with jwe public keys
|
||||
func EncryptWithJwe(pubKeys [][]byte) (CryptoConfig, error) {
|
||||
dc := DecryptConfig{}
|
||||
ep := map[string][][]byte{
|
||||
"pubkeys": pubKeys,
|
||||
}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ep,
|
||||
DecryptConfig: dc,
|
||||
},
|
||||
DecryptConfig: &dc,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// EncryptWithPkcs7 returns a CryptoConfig to encrypt with pkcs7 x509 certs
|
||||
func EncryptWithPkcs7(x509s [][]byte) (CryptoConfig, error) {
|
||||
dc := DecryptConfig{}
|
||||
|
||||
ep := map[string][][]byte{
|
||||
"x509s": x509s,
|
||||
}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ep,
|
||||
DecryptConfig: dc,
|
||||
},
|
||||
DecryptConfig: &dc,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// EncryptWithGpg returns a CryptoConfig to encrypt with configured gpg parameters
|
||||
func EncryptWithGpg(gpgRecipients [][]byte, gpgPubRingFile []byte) (CryptoConfig, error) {
|
||||
dc := DecryptConfig{}
|
||||
ep := map[string][][]byte{
|
||||
"gpg-recipients": gpgRecipients,
|
||||
"gpg-pubkeyringfile": {gpgPubRingFile},
|
||||
}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ep,
|
||||
DecryptConfig: dc,
|
||||
},
|
||||
DecryptConfig: &dc,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// DecryptWithPrivKeys returns a CryptoConfig to decrypt with configured private keys
|
||||
func DecryptWithPrivKeys(privKeys [][]byte, privKeysPasswords [][]byte) (CryptoConfig, error) {
|
||||
if len(privKeys) != len(privKeysPasswords) {
|
||||
return CryptoConfig{}, errors.New("Length of privKeys should match length of privKeysPasswords")
|
||||
}
|
||||
|
||||
dc := DecryptConfig{
|
||||
Parameters: map[string][][]byte{
|
||||
"privkeys": privKeys,
|
||||
"privkeys-passwords": privKeysPasswords,
|
||||
},
|
||||
}
|
||||
|
||||
ep := map[string][][]byte{}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ep,
|
||||
DecryptConfig: dc,
|
||||
},
|
||||
DecryptConfig: &dc,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// DecryptWithX509s returns a CryptoConfig to decrypt with configured x509 certs
|
||||
func DecryptWithX509s(x509s [][]byte) (CryptoConfig, error) {
|
||||
dc := DecryptConfig{
|
||||
Parameters: map[string][][]byte{
|
||||
"x509s": x509s,
|
||||
},
|
||||
}
|
||||
|
||||
ep := map[string][][]byte{}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ep,
|
||||
DecryptConfig: dc,
|
||||
},
|
||||
DecryptConfig: &dc,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// DecryptWithGpgPrivKeys returns a CryptoConfig to decrypt with configured gpg private keys
|
||||
func DecryptWithGpgPrivKeys(gpgPrivKeys, gpgPrivKeysPwds [][]byte) (CryptoConfig, error) {
|
||||
dc := DecryptConfig{
|
||||
Parameters: map[string][][]byte{
|
||||
"gpg-privatekeys": gpgPrivKeys,
|
||||
"gpg-privatekeys-passwords": gpgPrivKeysPwds,
|
||||
},
|
||||
}
|
||||
|
||||
ep := map[string][][]byte{}
|
||||
|
||||
return CryptoConfig{
|
||||
EncryptConfig: &EncryptConfig{
|
||||
Parameters: ep,
|
||||
DecryptConfig: dc,
|
||||
},
|
||||
DecryptConfig: &dc,
|
||||
}, nil
|
||||
}
|
||||
328
vendor/github.com/containers/ocicrypt/encryption.go
generated
vendored
Normal file
328
vendor/github.com/containers/ocicrypt/encryption.go
generated
vendored
Normal file
@ -0,0 +1,328 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package ocicrypt
|
||||
|
||||
import (
|
||||
"encoding/base64"
|
||||
"encoding/json"
|
||||
"io"
|
||||
"strings"
|
||||
|
||||
"github.com/containers/ocicrypt/blockcipher"
|
||||
"github.com/containers/ocicrypt/config"
|
||||
"github.com/containers/ocicrypt/keywrap"
|
||||
"github.com/containers/ocicrypt/keywrap/jwe"
|
||||
"github.com/containers/ocicrypt/keywrap/pgp"
|
||||
"github.com/containers/ocicrypt/keywrap/pkcs7"
|
||||
"github.com/opencontainers/go-digest"
|
||||
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// EncryptLayerFinalizer is a finalizer run to return the annotations to set for
|
||||
// the encrypted layer
|
||||
type EncryptLayerFinalizer func() (map[string]string, error)
|
||||
|
||||
func init() {
|
||||
keyWrappers = make(map[string]keywrap.KeyWrapper)
|
||||
keyWrapperAnnotations = make(map[string]string)
|
||||
RegisterKeyWrapper("pgp", pgp.NewKeyWrapper())
|
||||
RegisterKeyWrapper("jwe", jwe.NewKeyWrapper())
|
||||
RegisterKeyWrapper("pkcs7", pkcs7.NewKeyWrapper())
|
||||
}
|
||||
|
||||
var keyWrappers map[string]keywrap.KeyWrapper
|
||||
var keyWrapperAnnotations map[string]string
|
||||
|
||||
// RegisterKeyWrapper allows to register key wrappers by their encryption scheme
|
||||
func RegisterKeyWrapper(scheme string, iface keywrap.KeyWrapper) {
|
||||
keyWrappers[scheme] = iface
|
||||
keyWrapperAnnotations[iface.GetAnnotationID()] = scheme
|
||||
}
|
||||
|
||||
// GetKeyWrapper looks up the encryptor interface given an encryption scheme (gpg, jwe)
|
||||
func GetKeyWrapper(scheme string) keywrap.KeyWrapper {
|
||||
return keyWrappers[scheme]
|
||||
}
|
||||
|
||||
// GetWrappedKeysMap returns a map of wrappedKeys as values in a
|
||||
// map with the encryption scheme(s) as the key(s)
|
||||
func GetWrappedKeysMap(desc ocispec.Descriptor) map[string]string {
|
||||
wrappedKeysMap := make(map[string]string)
|
||||
|
||||
for annotationsID, scheme := range keyWrapperAnnotations {
|
||||
if annotation, ok := desc.Annotations[annotationsID]; ok {
|
||||
wrappedKeysMap[scheme] = annotation
|
||||
}
|
||||
}
|
||||
return wrappedKeysMap
|
||||
}
|
||||
|
||||
// EncryptLayer encrypts the layer by running one encryptor after the other
|
||||
func EncryptLayer(ec *config.EncryptConfig, encOrPlainLayerReader io.Reader, desc ocispec.Descriptor) (io.Reader, EncryptLayerFinalizer, error) {
|
||||
var (
|
||||
encLayerReader io.Reader
|
||||
err error
|
||||
encrypted bool
|
||||
bcFin blockcipher.Finalizer
|
||||
privOptsData []byte
|
||||
pubOptsData []byte
|
||||
)
|
||||
|
||||
if ec == nil {
|
||||
return nil, nil, errors.New("EncryptConfig must not be nil")
|
||||
}
|
||||
|
||||
for annotationsID := range keyWrapperAnnotations {
|
||||
annotation := desc.Annotations[annotationsID]
|
||||
if annotation != "" {
|
||||
privOptsData, err = decryptLayerKeyOptsData(&ec.DecryptConfig, desc)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
pubOptsData, err = getLayerPubOpts(desc)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
// already encrypted!
|
||||
encrypted = true
|
||||
}
|
||||
}
|
||||
|
||||
if !encrypted {
|
||||
encLayerReader, bcFin, err = commonEncryptLayer(encOrPlainLayerReader, desc.Digest, blockcipher.AES256CTR)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
}
|
||||
|
||||
encLayerFinalizer := func() (map[string]string, error) {
|
||||
// If layer was already encrypted, bcFin should be nil, use existing optsData
|
||||
if bcFin != nil {
|
||||
opts, err := bcFin()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
privOptsData, err = json.Marshal(opts.Private)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "could not JSON marshal opts")
|
||||
}
|
||||
pubOptsData, err = json.Marshal(opts.Public)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "could not JSON marshal opts")
|
||||
}
|
||||
}
|
||||
|
||||
newAnnotations := make(map[string]string)
|
||||
for annotationsID, scheme := range keyWrapperAnnotations {
|
||||
b64Annotations := desc.Annotations[annotationsID]
|
||||
keywrapper := GetKeyWrapper(scheme)
|
||||
b64Annotations, err = preWrapKeys(keywrapper, ec, b64Annotations, privOptsData)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if b64Annotations != "" {
|
||||
newAnnotations[annotationsID] = b64Annotations
|
||||
}
|
||||
}
|
||||
|
||||
newAnnotations["org.opencontainers.image.enc.pubopts"] = base64.StdEncoding.EncodeToString(pubOptsData)
|
||||
|
||||
if len(newAnnotations) == 0 {
|
||||
return nil, errors.New("no encryptor found to handle encryption")
|
||||
}
|
||||
|
||||
return newAnnotations, err
|
||||
}
|
||||
|
||||
// if nothing was encrypted, we just return encLayer = nil
|
||||
return encLayerReader, encLayerFinalizer, err
|
||||
|
||||
}
|
||||
|
||||
// preWrapKeys calls WrapKeys and handles the base64 encoding and concatenation of the
|
||||
// annotation data
|
||||
func preWrapKeys(keywrapper keywrap.KeyWrapper, ec *config.EncryptConfig, b64Annotations string, optsData []byte) (string, error) {
|
||||
newAnnotation, err := keywrapper.WrapKeys(ec, optsData)
|
||||
if err != nil || len(newAnnotation) == 0 {
|
||||
return b64Annotations, err
|
||||
}
|
||||
b64newAnnotation := base64.StdEncoding.EncodeToString(newAnnotation)
|
||||
if b64Annotations == "" {
|
||||
return b64newAnnotation, nil
|
||||
}
|
||||
return b64Annotations + "," + b64newAnnotation, nil
|
||||
}
|
||||
|
||||
// DecryptLayer decrypts a layer trying one keywrap.KeyWrapper after the other to see whether it
|
||||
// can apply the provided private key
|
||||
// If unwrapOnly is set we will only try to decrypt the layer encryption key and return
|
||||
func DecryptLayer(dc *config.DecryptConfig, encLayerReader io.Reader, desc ocispec.Descriptor, unwrapOnly bool) (io.Reader, digest.Digest, error) {
|
||||
if dc == nil {
|
||||
return nil, "", errors.New("DecryptConfig must not be nil")
|
||||
}
|
||||
privOptsData, err := decryptLayerKeyOptsData(dc, desc)
|
||||
if err != nil || unwrapOnly {
|
||||
return nil, "", err
|
||||
}
|
||||
|
||||
var pubOptsData []byte
|
||||
pubOptsData, err = getLayerPubOpts(desc)
|
||||
if err != nil {
|
||||
return nil, "", err
|
||||
}
|
||||
|
||||
return commonDecryptLayer(encLayerReader, privOptsData, pubOptsData)
|
||||
}
|
||||
|
||||
func decryptLayerKeyOptsData(dc *config.DecryptConfig, desc ocispec.Descriptor) ([]byte, error) {
|
||||
privKeyGiven := false
|
||||
for annotationsID, scheme := range keyWrapperAnnotations {
|
||||
b64Annotation := desc.Annotations[annotationsID]
|
||||
if b64Annotation != "" {
|
||||
keywrapper := GetKeyWrapper(scheme)
|
||||
|
||||
if keywrapper.NoPossibleKeys(dc.Parameters) {
|
||||
continue
|
||||
}
|
||||
|
||||
if len(keywrapper.GetPrivateKeys(dc.Parameters)) > 0 {
|
||||
privKeyGiven = true
|
||||
}
|
||||
|
||||
optsData, err := preUnwrapKey(keywrapper, dc, b64Annotation)
|
||||
if err != nil {
|
||||
// try next keywrap.KeyWrapper
|
||||
continue
|
||||
}
|
||||
if optsData == nil {
|
||||
// try next keywrap.KeyWrapper
|
||||
continue
|
||||
}
|
||||
return optsData, nil
|
||||
}
|
||||
}
|
||||
if !privKeyGiven {
|
||||
return nil, errors.New("missing private key needed for decryption")
|
||||
}
|
||||
return nil, errors.Errorf("no suitable key unwrapper found or none of the private keys could be used for decryption")
|
||||
}
|
||||
|
||||
func getLayerPubOpts(desc ocispec.Descriptor) ([]byte, error) {
|
||||
pubOptsString := desc.Annotations["org.opencontainers.image.enc.pubopts"]
|
||||
if pubOptsString == "" {
|
||||
return json.Marshal(blockcipher.PublicLayerBlockCipherOptions{})
|
||||
}
|
||||
return base64.StdEncoding.DecodeString(pubOptsString)
|
||||
}
|
||||
|
||||
// preUnwrapKey decodes the comma separated base64 strings and calls the Unwrap function
|
||||
// of the given keywrapper with it and returns the result in case the Unwrap functions
|
||||
// does not return an error. If all attempts fail, an error is returned.
|
||||
func preUnwrapKey(keywrapper keywrap.KeyWrapper, dc *config.DecryptConfig, b64Annotations string) ([]byte, error) {
|
||||
if b64Annotations == "" {
|
||||
return nil, nil
|
||||
}
|
||||
for _, b64Annotation := range strings.Split(b64Annotations, ",") {
|
||||
annotation, err := base64.StdEncoding.DecodeString(b64Annotation)
|
||||
if err != nil {
|
||||
return nil, errors.New("could not base64 decode the annotation")
|
||||
}
|
||||
optsData, err := keywrapper.UnwrapKey(dc, annotation)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
return optsData, nil
|
||||
}
|
||||
return nil, errors.New("no suitable key found for decrypting layer key")
|
||||
}
|
||||
|
||||
// commonEncryptLayer is a function to encrypt the plain layer using a new random
|
||||
// symmetric key and return the LayerBlockCipherHandler's JSON in string form for
|
||||
// later use during decryption
|
||||
func commonEncryptLayer(plainLayerReader io.Reader, d digest.Digest, typ blockcipher.LayerCipherType) (io.Reader, blockcipher.Finalizer, error) {
|
||||
lbch, err := blockcipher.NewLayerBlockCipherHandler()
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
encLayerReader, bcFin, err := lbch.Encrypt(plainLayerReader, typ)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
newBcFin := func() (blockcipher.LayerBlockCipherOptions, error) {
|
||||
lbco, err := bcFin()
|
||||
if err != nil {
|
||||
return blockcipher.LayerBlockCipherOptions{}, err
|
||||
}
|
||||
lbco.Private.Digest = d
|
||||
return lbco, nil
|
||||
}
|
||||
|
||||
return encLayerReader, newBcFin, err
|
||||
}
|
||||
|
||||
// commonDecryptLayer decrypts an encrypted layer previously encrypted with commonEncryptLayer
|
||||
// by passing along the optsData
|
||||
func commonDecryptLayer(encLayerReader io.Reader, privOptsData []byte, pubOptsData []byte) (io.Reader, digest.Digest, error) {
|
||||
privOpts := blockcipher.PrivateLayerBlockCipherOptions{}
|
||||
err := json.Unmarshal(privOptsData, &privOpts)
|
||||
if err != nil {
|
||||
return nil, "", errors.Wrapf(err, "could not JSON unmarshal privOptsData")
|
||||
}
|
||||
|
||||
lbch, err := blockcipher.NewLayerBlockCipherHandler()
|
||||
if err != nil {
|
||||
return nil, "", err
|
||||
}
|
||||
|
||||
pubOpts := blockcipher.PublicLayerBlockCipherOptions{}
|
||||
if len(pubOptsData) > 0 {
|
||||
err := json.Unmarshal(pubOptsData, &pubOpts)
|
||||
if err != nil {
|
||||
return nil, "", errors.Wrapf(err, "could not JSON unmarshal pubOptsData")
|
||||
}
|
||||
}
|
||||
|
||||
opts := blockcipher.LayerBlockCipherOptions{
|
||||
Private: privOpts,
|
||||
Public: pubOpts,
|
||||
}
|
||||
|
||||
plainLayerReader, opts, err := lbch.Decrypt(encLayerReader, opts)
|
||||
if err != nil {
|
||||
return nil, "", err
|
||||
}
|
||||
|
||||
return plainLayerReader, opts.Private.Digest, nil
|
||||
}
|
||||
|
||||
// FilterOutAnnotations filters out the annotations belonging to the image encryption 'namespace'
|
||||
// and returns a map with those taken out
|
||||
func FilterOutAnnotations(annotations map[string]string) map[string]string {
|
||||
a := make(map[string]string)
|
||||
if len(annotations) > 0 {
|
||||
for k, v := range annotations {
|
||||
if strings.HasPrefix(k, "org.opencontainers.image.enc.") {
|
||||
continue
|
||||
}
|
||||
a[k] = v
|
||||
}
|
||||
}
|
||||
return a
|
||||
}
|
||||
18
vendor/github.com/containers/ocicrypt/go.mod
generated
vendored
Normal file
18
vendor/github.com/containers/ocicrypt/go.mod
generated
vendored
Normal file
@ -0,0 +1,18 @@
|
||||
module github.com/containers/ocicrypt
|
||||
|
||||
go 1.12
|
||||
|
||||
require (
|
||||
github.com/containerd/containerd v1.2.10
|
||||
github.com/fullsailor/pkcs7 v0.0.0-20190404230743-d7302db945fa
|
||||
github.com/opencontainers/go-digest v1.0.0-rc1
|
||||
github.com/opencontainers/image-spec v1.0.1
|
||||
github.com/pkg/errors v0.8.1
|
||||
github.com/sirupsen/logrus v1.4.2 // indirect
|
||||
github.com/stretchr/testify v1.3.0 // indirect
|
||||
github.com/urfave/cli v1.22.1
|
||||
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
|
||||
google.golang.org/grpc v1.24.0 // indirect
|
||||
gopkg.in/square/go-jose.v2 v2.3.1
|
||||
gotest.tools v2.2.0+incompatible // indirect
|
||||
)
|
||||
425
vendor/github.com/containers/ocicrypt/gpg.go
generated
vendored
Normal file
425
vendor/github.com/containers/ocicrypt/gpg.go
generated
vendored
Normal file
@ -0,0 +1,425 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package ocicrypt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"os/exec"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
||||
"github.com/pkg/errors"
|
||||
"golang.org/x/crypto/ssh/terminal"
|
||||
)
|
||||
|
||||
// GPGVersion enum representing the GPG client version to use.
|
||||
type GPGVersion int
|
||||
|
||||
const (
|
||||
// GPGv2 signifies gpgv2+
|
||||
GPGv2 GPGVersion = iota
|
||||
// GPGv1 signifies gpgv1+
|
||||
GPGv1
|
||||
// GPGVersionUndetermined signifies gpg client version undetermined
|
||||
GPGVersionUndetermined
|
||||
)
|
||||
|
||||
// GPGClient defines an interface for wrapping the gpg command line tools
|
||||
type GPGClient interface {
|
||||
// ReadGPGPubRingFile gets the byte sequence of the gpg public keyring
|
||||
ReadGPGPubRingFile() ([]byte, error)
|
||||
// GetGPGPrivateKey gets the private key bytes of a keyid given a passphrase
|
||||
GetGPGPrivateKey(keyid uint64, passphrase string) ([]byte, error)
|
||||
// GetSecretKeyDetails gets the details of a secret key
|
||||
GetSecretKeyDetails(keyid uint64) ([]byte, bool, error)
|
||||
// GetKeyDetails gets the details of a public key
|
||||
GetKeyDetails(keyid uint64) ([]byte, bool, error)
|
||||
// ResolveRecipients resolves PGP key ids to user names
|
||||
ResolveRecipients([]string) []string
|
||||
}
|
||||
|
||||
// gpgClient contains generic gpg client information
|
||||
type gpgClient struct {
|
||||
gpgHomeDir string
|
||||
}
|
||||
|
||||
// gpgv2Client is a gpg2 client
|
||||
type gpgv2Client struct {
|
||||
gpgClient
|
||||
}
|
||||
|
||||
// gpgv1Client is a gpg client
|
||||
type gpgv1Client struct {
|
||||
gpgClient
|
||||
}
|
||||
|
||||
// GuessGPGVersion guesses the version of gpg. Defaults to gpg2 if exists, if
|
||||
// not defaults to regular gpg.
|
||||
func GuessGPGVersion() GPGVersion {
|
||||
if err := exec.Command("gpg2", "--version").Run(); err == nil {
|
||||
return GPGv2
|
||||
} else if err := exec.Command("gpg", "--version").Run(); err == nil {
|
||||
return GPGv1
|
||||
} else {
|
||||
return GPGVersionUndetermined
|
||||
}
|
||||
}
|
||||
|
||||
// NewGPGClient creates a new GPGClient object representing the given version
|
||||
// and using the given home directory
|
||||
func NewGPGClient(gpgVersion, gpgHomeDir string) (GPGClient, error) {
|
||||
v := new(GPGVersion)
|
||||
switch gpgVersion {
|
||||
case "v1":
|
||||
*v = GPGv1
|
||||
case "v2":
|
||||
*v = GPGv2
|
||||
default:
|
||||
v = nil
|
||||
}
|
||||
return newGPGClient(v, gpgHomeDir)
|
||||
}
|
||||
|
||||
func newGPGClient(version *GPGVersion, homedir string) (GPGClient, error) {
|
||||
var gpgVersion GPGVersion
|
||||
if version != nil {
|
||||
gpgVersion = *version
|
||||
} else {
|
||||
gpgVersion = GuessGPGVersion()
|
||||
}
|
||||
|
||||
switch gpgVersion {
|
||||
case GPGv1:
|
||||
return &gpgv1Client{
|
||||
gpgClient: gpgClient{gpgHomeDir: homedir},
|
||||
}, nil
|
||||
case GPGv2:
|
||||
return &gpgv2Client{
|
||||
gpgClient: gpgClient{gpgHomeDir: homedir},
|
||||
}, nil
|
||||
case GPGVersionUndetermined:
|
||||
return nil, fmt.Errorf("unable to determine GPG version")
|
||||
default:
|
||||
return nil, fmt.Errorf("unhandled case: NewGPGClient")
|
||||
}
|
||||
}
|
||||
|
||||
// GetGPGPrivateKey gets the bytes of a specified keyid, supplying a passphrase
|
||||
func (gc *gpgv2Client) GetGPGPrivateKey(keyid uint64, passphrase string) ([]byte, error) {
|
||||
var args []string
|
||||
|
||||
if gc.gpgHomeDir != "" {
|
||||
args = append(args, []string{"--homedir", gc.gpgHomeDir}...)
|
||||
}
|
||||
|
||||
rfile, wfile, err := os.Pipe()
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "could not create pipe")
|
||||
}
|
||||
defer func() {
|
||||
rfile.Close()
|
||||
wfile.Close()
|
||||
}()
|
||||
// fill pipe in background
|
||||
go func(passphrase string) {
|
||||
_, _ = wfile.Write([]byte(passphrase))
|
||||
wfile.Close()
|
||||
}(passphrase)
|
||||
|
||||
args = append(args, []string{"--pinentry-mode", "loopback", "--batch", "--passphrase-fd", fmt.Sprintf("%d", 3), "--export-secret-key", fmt.Sprintf("0x%x", keyid)}...)
|
||||
|
||||
cmd := exec.Command("gpg2", args...)
|
||||
cmd.ExtraFiles = []*os.File{rfile}
|
||||
|
||||
return runGPGGetOutput(cmd)
|
||||
}
|
||||
|
||||
// ReadGPGPubRingFile reads the GPG public key ring file
|
||||
func (gc *gpgv2Client) ReadGPGPubRingFile() ([]byte, error) {
|
||||
var args []string
|
||||
|
||||
if gc.gpgHomeDir != "" {
|
||||
args = append(args, []string{"--homedir", gc.gpgHomeDir}...)
|
||||
}
|
||||
args = append(args, []string{"--batch", "--export"}...)
|
||||
|
||||
cmd := exec.Command("gpg2", args...)
|
||||
|
||||
return runGPGGetOutput(cmd)
|
||||
}
|
||||
|
||||
func (gc *gpgv2Client) getKeyDetails(option string, keyid uint64) ([]byte, bool, error) {
|
||||
var args []string
|
||||
|
||||
if gc.gpgHomeDir != "" {
|
||||
args = append([]string{"--homedir", gc.gpgHomeDir})
|
||||
}
|
||||
args = append(args, option, fmt.Sprintf("0x%x", keyid))
|
||||
|
||||
cmd := exec.Command("gpg2", args...)
|
||||
|
||||
keydata, err := runGPGGetOutput(cmd)
|
||||
return keydata, err == nil, err
|
||||
}
|
||||
|
||||
// GetSecretKeyDetails retrives the secret key details of key with keyid.
|
||||
// returns a byte array of the details and a bool if the key exists
|
||||
func (gc *gpgv2Client) GetSecretKeyDetails(keyid uint64) ([]byte, bool, error) {
|
||||
return gc.getKeyDetails("-K", keyid)
|
||||
}
|
||||
|
||||
// GetKeyDetails retrives the public key details of key with keyid.
|
||||
// returns a byte array of the details and a bool if the key exists
|
||||
func (gc *gpgv2Client) GetKeyDetails(keyid uint64) ([]byte, bool, error) {
|
||||
return gc.getKeyDetails("-k", keyid)
|
||||
}
|
||||
|
||||
// ResolveRecipients converts PGP keyids to email addresses, if possible
|
||||
func (gc *gpgv2Client) ResolveRecipients(recipients []string) []string {
|
||||
return resolveRecipients(gc, recipients)
|
||||
}
|
||||
|
||||
// GetGPGPrivateKey gets the bytes of a specified keyid, supplying a passphrase
|
||||
func (gc *gpgv1Client) GetGPGPrivateKey(keyid uint64, _ string) ([]byte, error) {
|
||||
var args []string
|
||||
|
||||
if gc.gpgHomeDir != "" {
|
||||
args = append(args, []string{"--homedir", gc.gpgHomeDir}...)
|
||||
}
|
||||
args = append(args, []string{"--batch", "--export-secret-key", fmt.Sprintf("0x%x", keyid)}...)
|
||||
|
||||
cmd := exec.Command("gpg", args...)
|
||||
|
||||
return runGPGGetOutput(cmd)
|
||||
}
|
||||
|
||||
// ReadGPGPubRingFile reads the GPG public key ring file
|
||||
func (gc *gpgv1Client) ReadGPGPubRingFile() ([]byte, error) {
|
||||
var args []string
|
||||
|
||||
if gc.gpgHomeDir != "" {
|
||||
args = append(args, []string{"--homedir", gc.gpgHomeDir}...)
|
||||
}
|
||||
args = append(args, []string{"--batch", "--export"}...)
|
||||
|
||||
cmd := exec.Command("gpg", args...)
|
||||
|
||||
return runGPGGetOutput(cmd)
|
||||
}
|
||||
|
||||
func (gc *gpgv1Client) getKeyDetails(option string, keyid uint64) ([]byte, bool, error) {
|
||||
var args []string
|
||||
|
||||
if gc.gpgHomeDir != "" {
|
||||
args = append([]string{"--homedir", gc.gpgHomeDir})
|
||||
}
|
||||
args = append(args, option, fmt.Sprintf("0x%x", keyid))
|
||||
|
||||
cmd := exec.Command("gpg", args...)
|
||||
|
||||
keydata, err := runGPGGetOutput(cmd)
|
||||
|
||||
return keydata, err == nil, err
|
||||
}
|
||||
|
||||
// GetSecretKeyDetails retrives the secret key details of key with keyid.
|
||||
// returns a byte array of the details and a bool if the key exists
|
||||
func (gc *gpgv1Client) GetSecretKeyDetails(keyid uint64) ([]byte, bool, error) {
|
||||
return gc.getKeyDetails("-K", keyid)
|
||||
}
|
||||
|
||||
// GetKeyDetails retrives the public key details of key with keyid.
|
||||
// returns a byte array of the details and a bool if the key exists
|
||||
func (gc *gpgv1Client) GetKeyDetails(keyid uint64) ([]byte, bool, error) {
|
||||
return gc.getKeyDetails("-k", keyid)
|
||||
}
|
||||
|
||||
// ResolveRecipients converts PGP keyids to email addresses, if possible
|
||||
func (gc *gpgv1Client) ResolveRecipients(recipients []string) []string {
|
||||
return resolveRecipients(gc, recipients)
|
||||
}
|
||||
|
||||
// runGPGGetOutput runs the GPG commandline and returns stdout as byte array
|
||||
// and any stderr in the error
|
||||
func runGPGGetOutput(cmd *exec.Cmd) ([]byte, error) {
|
||||
stdout, err := cmd.StdoutPipe()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
stderr, err := cmd.StderrPipe()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := cmd.Start(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
stdoutstr, err2 := ioutil.ReadAll(stdout)
|
||||
stderrstr, _ := ioutil.ReadAll(stderr)
|
||||
|
||||
if err := cmd.Wait(); err != nil {
|
||||
return nil, fmt.Errorf("error from %s: %s", cmd.Path, string(stderrstr))
|
||||
}
|
||||
|
||||
return stdoutstr, err2
|
||||
}
|
||||
|
||||
// resolveRecipients walks the list of recipients and attempts to convert
|
||||
// all keyIds to email addresses; if something goes wrong during the
|
||||
// conversion of a recipient, the original string is returned for that
|
||||
// recpient
|
||||
func resolveRecipients(gc GPGClient, recipients []string) []string {
|
||||
var result []string
|
||||
|
||||
for _, recipient := range recipients {
|
||||
keyID, err := strconv.ParseUint(recipient, 0, 64)
|
||||
if err != nil {
|
||||
result = append(result, recipient)
|
||||
} else {
|
||||
details, found, _ := gc.GetKeyDetails(keyID)
|
||||
if !found {
|
||||
result = append(result, recipient)
|
||||
} else {
|
||||
email := extractEmailFromDetails(details)
|
||||
if email == "" {
|
||||
result = append(result, recipient)
|
||||
} else {
|
||||
result = append(result, email)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
var emailPattern = regexp.MustCompile(`uid\s+\[.*\]\s.*\s<(?P<email>.+)>`)
|
||||
|
||||
func extractEmailFromDetails(details []byte) string {
|
||||
loc := emailPattern.FindSubmatchIndex(details)
|
||||
if len(loc) == 0 {
|
||||
return ""
|
||||
}
|
||||
return string(emailPattern.Expand(nil, []byte("$email"), details, loc))
|
||||
}
|
||||
|
||||
// uint64ToStringArray converts an array of uint64's to an array of strings
|
||||
// by applying a format string to each uint64
|
||||
func uint64ToStringArray(format string, in []uint64) []string {
|
||||
var ret []string
|
||||
|
||||
for _, v := range in {
|
||||
ret = append(ret, fmt.Sprintf(format, v))
|
||||
}
|
||||
return ret
|
||||
}
|
||||
|
||||
// GPGGetPrivateKey walks the list of layerInfos and tries to decrypt the
|
||||
// wrapped symmetric keys. For this it determines whether a private key is
|
||||
// in the GPGVault or on this system and prompts for the passwords for those
|
||||
// that are available. If we do not find a private key on the system for
|
||||
// getting to the symmetric key of a layer then an error is generated.
|
||||
func GPGGetPrivateKey(descs []ocispec.Descriptor, gpgClient GPGClient, gpgVault GPGVault, mustFindKey bool) (gpgPrivKeys [][]byte, gpgPrivKeysPwds [][]byte, err error) {
|
||||
// PrivateKeyData describes a private key
|
||||
type PrivateKeyData struct {
|
||||
KeyData []byte
|
||||
KeyDataPassword []byte
|
||||
}
|
||||
var pkd PrivateKeyData
|
||||
keyIDPasswordMap := make(map[uint64]PrivateKeyData)
|
||||
|
||||
for _, desc := range descs {
|
||||
for scheme, b64pgpPackets := range GetWrappedKeysMap(desc) {
|
||||
if scheme != "pgp" {
|
||||
continue
|
||||
}
|
||||
keywrapper := GetKeyWrapper(scheme)
|
||||
if keywrapper == nil {
|
||||
return nil, nil, errors.Errorf("could not get KeyWrapper for %s\n", scheme)
|
||||
}
|
||||
keyIds, err := keywrapper.GetKeyIdsFromPacket(b64pgpPackets)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
found := false
|
||||
for _, keyid := range keyIds {
|
||||
// do we have this key? -- first check the vault
|
||||
if gpgVault != nil {
|
||||
_, keydata := gpgVault.GetGPGPrivateKey(keyid)
|
||||
if len(keydata) > 0 {
|
||||
pkd = PrivateKeyData{
|
||||
KeyData: keydata,
|
||||
KeyDataPassword: nil, // password not supported in this case
|
||||
}
|
||||
keyIDPasswordMap[keyid] = pkd
|
||||
found = true
|
||||
break
|
||||
}
|
||||
} else if gpgClient != nil {
|
||||
// check the local system's gpg installation
|
||||
keyinfo, haveKey, _ := gpgClient.GetSecretKeyDetails(keyid)
|
||||
// this may fail if the key is not here; we ignore the error
|
||||
if !haveKey {
|
||||
// key not on this system
|
||||
continue
|
||||
}
|
||||
|
||||
_, found = keyIDPasswordMap[keyid]
|
||||
if !found {
|
||||
fmt.Printf("Passphrase required for Key id 0x%x: \n%v", keyid, string(keyinfo))
|
||||
fmt.Printf("Enter passphrase for key with Id 0x%x: ", keyid)
|
||||
|
||||
password, err := terminal.ReadPassword(int(os.Stdin.Fd()))
|
||||
fmt.Printf("\n")
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
keydata, err := gpgClient.GetGPGPrivateKey(keyid, string(password))
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
pkd = PrivateKeyData{
|
||||
KeyData: keydata,
|
||||
KeyDataPassword: password,
|
||||
}
|
||||
keyIDPasswordMap[keyid] = pkd
|
||||
found = true
|
||||
}
|
||||
break
|
||||
} else {
|
||||
return nil, nil, errors.New("no GPGVault or GPGClient passed")
|
||||
}
|
||||
}
|
||||
if !found && len(b64pgpPackets) > 0 && mustFindKey {
|
||||
ids := uint64ToStringArray("0x%x", keyIds)
|
||||
|
||||
return nil, nil, errors.Errorf("missing key for decryption of layer %x of %s. Need one of the following keys: %s", desc.Digest, desc.Platform, strings.Join(ids, ", "))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for _, pkd := range keyIDPasswordMap {
|
||||
gpgPrivKeys = append(gpgPrivKeys, pkd.KeyData)
|
||||
gpgPrivKeysPwds = append(gpgPrivKeysPwds, pkd.KeyDataPassword)
|
||||
}
|
||||
|
||||
return gpgPrivKeys, gpgPrivKeysPwds, nil
|
||||
}
|
||||
100
vendor/github.com/containers/ocicrypt/gpgvault.go
generated
vendored
Normal file
100
vendor/github.com/containers/ocicrypt/gpgvault.go
generated
vendored
Normal file
@ -0,0 +1,100 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package ocicrypt
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io/ioutil"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
"golang.org/x/crypto/openpgp"
|
||||
"golang.org/x/crypto/openpgp/packet"
|
||||
)
|
||||
|
||||
// GPGVault defines an interface for wrapping multiple secret key rings
|
||||
type GPGVault interface {
|
||||
// AddSecretKeyRingData adds a secret keyring via its raw byte array
|
||||
AddSecretKeyRingData(gpgSecretKeyRingData []byte) error
|
||||
// AddSecretKeyRingDataArray adds secret keyring via its raw byte arrays
|
||||
AddSecretKeyRingDataArray(gpgSecretKeyRingDataArray [][]byte) error
|
||||
// AddSecretKeyRingFiles adds secret keyrings given their filenames
|
||||
AddSecretKeyRingFiles(filenames []string) error
|
||||
// GetGPGPrivateKey gets the private key bytes of a keyid given a passphrase
|
||||
GetGPGPrivateKey(keyid uint64) ([]openpgp.Key, []byte)
|
||||
}
|
||||
|
||||
// gpgVault wraps an array of gpgSecretKeyRing
|
||||
type gpgVault struct {
|
||||
entityLists []openpgp.EntityList
|
||||
keyDataList [][]byte // the raw data original passed in
|
||||
}
|
||||
|
||||
// NewGPGVault creates an empty GPGVault
|
||||
func NewGPGVault() GPGVault {
|
||||
return &gpgVault{}
|
||||
}
|
||||
|
||||
// AddSecretKeyRingData adds a secret keyring's to the gpgVault; the raw byte
|
||||
// array read from the file must be passed and will be parsed by this function
|
||||
func (g *gpgVault) AddSecretKeyRingData(gpgSecretKeyRingData []byte) error {
|
||||
// read the private keys
|
||||
r := bytes.NewReader(gpgSecretKeyRingData)
|
||||
entityList, err := openpgp.ReadKeyRing(r)
|
||||
if err != nil {
|
||||
return errors.Wrapf(err, "could not read keyring")
|
||||
}
|
||||
g.entityLists = append(g.entityLists, entityList)
|
||||
g.keyDataList = append(g.keyDataList, gpgSecretKeyRingData)
|
||||
return nil
|
||||
}
|
||||
|
||||
// AddSecretKeyRingDataArray adds secret keyrings to the gpgVault; the raw byte
|
||||
// arrays read from files must be passed
|
||||
func (g *gpgVault) AddSecretKeyRingDataArray(gpgSecretKeyRingDataArray [][]byte) error {
|
||||
for _, gpgSecretKeyRingData := range gpgSecretKeyRingDataArray {
|
||||
if err := g.AddSecretKeyRingData(gpgSecretKeyRingData); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// AddSecretKeyRingFiles adds the secret key rings given their filenames
|
||||
func (g *gpgVault) AddSecretKeyRingFiles(filenames []string) error {
|
||||
for _, filename := range filenames {
|
||||
gpgSecretKeyRingData, err := ioutil.ReadFile(filename)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = g.AddSecretKeyRingData(gpgSecretKeyRingData)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetGPGPrivateKey gets the bytes of a specified keyid, supplying a passphrase
|
||||
func (g *gpgVault) GetGPGPrivateKey(keyid uint64) ([]openpgp.Key, []byte) {
|
||||
for i, el := range g.entityLists {
|
||||
decKeys := el.KeysByIdUsage(keyid, packet.KeyFlagEncryptCommunications)
|
||||
if len(decKeys) > 0 {
|
||||
return decKeys, g.keyDataList[i]
|
||||
}
|
||||
}
|
||||
return nil, nil
|
||||
}
|
||||
136
vendor/github.com/containers/ocicrypt/keywrap/jwe/keywrapper_jwe.go
generated
vendored
Normal file
136
vendor/github.com/containers/ocicrypt/keywrap/jwe/keywrapper_jwe.go
generated
vendored
Normal file
@ -0,0 +1,136 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package jwe
|
||||
|
||||
import (
|
||||
"crypto/ecdsa"
|
||||
|
||||
"github.com/containers/ocicrypt/config"
|
||||
"github.com/containers/ocicrypt/keywrap"
|
||||
"github.com/containers/ocicrypt/utils"
|
||||
"github.com/pkg/errors"
|
||||
jose "gopkg.in/square/go-jose.v2"
|
||||
)
|
||||
|
||||
type jweKeyWrapper struct {
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) GetAnnotationID() string {
|
||||
return "org.opencontainers.image.enc.keys.jwe"
|
||||
}
|
||||
|
||||
// NewKeyWrapper returns a new key wrapping interface using jwe
|
||||
func NewKeyWrapper() keywrap.KeyWrapper {
|
||||
return &jweKeyWrapper{}
|
||||
}
|
||||
|
||||
// WrapKeys wraps the session key for recpients and encrypts the optsData, which
|
||||
// describe the symmetric key used for encrypting the layer
|
||||
func (kw *jweKeyWrapper) WrapKeys(ec *config.EncryptConfig, optsData []byte) ([]byte, error) {
|
||||
var joseRecipients []jose.Recipient
|
||||
|
||||
err := addPubKeys(&joseRecipients, ec.Parameters["pubkeys"])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// no recipients is not an error...
|
||||
if len(joseRecipients) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
encrypter, err := jose.NewMultiEncrypter(jose.A256GCM, joseRecipients, nil)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "jose.NewMultiEncrypter failed")
|
||||
}
|
||||
jwe, err := encrypter.Encrypt(optsData)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "JWE Encrypt failed")
|
||||
}
|
||||
return []byte(jwe.FullSerialize()), nil
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) UnwrapKey(dc *config.DecryptConfig, jweString []byte) ([]byte, error) {
|
||||
jwe, err := jose.ParseEncrypted(string(jweString))
|
||||
if err != nil {
|
||||
return nil, errors.New("jose.ParseEncrypted failed")
|
||||
}
|
||||
|
||||
privKeys := kw.GetPrivateKeys(dc.Parameters)
|
||||
if len(privKeys) == 0 {
|
||||
return nil, errors.New("No private keys found for JWE decryption")
|
||||
}
|
||||
privKeysPasswords := kw.getPrivateKeysPasswords(dc.Parameters)
|
||||
if len(privKeysPasswords) != len(privKeys) {
|
||||
return nil, errors.New("Private key password array length must be same as that of private keys")
|
||||
}
|
||||
|
||||
for idx, privKey := range privKeys {
|
||||
key, err := utils.ParsePrivateKey(privKey, privKeysPasswords[idx], "JWE")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
_, _, plain, err := jwe.DecryptMulti(key)
|
||||
if err == nil {
|
||||
return plain, nil
|
||||
}
|
||||
}
|
||||
return nil, errors.New("JWE: No suitable private key found for decryption")
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) NoPossibleKeys(dcparameters map[string][][]byte) bool {
|
||||
return len(kw.GetPrivateKeys(dcparameters)) == 0
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) GetPrivateKeys(dcparameters map[string][][]byte) [][]byte {
|
||||
return dcparameters["privkeys"]
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) getPrivateKeysPasswords(dcparameters map[string][][]byte) [][]byte {
|
||||
return dcparameters["privkeys-passwords"]
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) GetKeyIdsFromPacket(b64jwes string) ([]uint64, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
func (kw *jweKeyWrapper) GetRecipients(b64jwes string) ([]string, error) {
|
||||
return []string{"[jwe]"}, nil
|
||||
}
|
||||
|
||||
func addPubKeys(joseRecipients *[]jose.Recipient, pubKeys [][]byte) error {
|
||||
if len(pubKeys) == 0 {
|
||||
return nil
|
||||
}
|
||||
for _, pubKey := range pubKeys {
|
||||
key, err := utils.ParsePublicKey(pubKey, "JWE")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
alg := jose.RSA_OAEP
|
||||
switch key.(type) {
|
||||
case *ecdsa.PublicKey:
|
||||
alg = jose.ECDH_ES_A256KW
|
||||
}
|
||||
|
||||
*joseRecipients = append(*joseRecipients, jose.Recipient{
|
||||
Algorithm: alg,
|
||||
Key: key,
|
||||
})
|
||||
}
|
||||
return nil
|
||||
}
|
||||
48
vendor/github.com/containers/ocicrypt/keywrap/keywrap.go
generated
vendored
Normal file
48
vendor/github.com/containers/ocicrypt/keywrap/keywrap.go
generated
vendored
Normal file
@ -0,0 +1,48 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package keywrap
|
||||
|
||||
import (
|
||||
"github.com/containers/ocicrypt/config"
|
||||
)
|
||||
|
||||
// KeyWrapper is the interface used for wrapping keys using
|
||||
// a specific encryption technology (pgp, jwe)
|
||||
type KeyWrapper interface {
|
||||
WrapKeys(ec *config.EncryptConfig, optsData []byte) ([]byte, error)
|
||||
UnwrapKey(dc *config.DecryptConfig, annotation []byte) ([]byte, error)
|
||||
GetAnnotationID() string
|
||||
|
||||
// NoPossibleKeys returns true if there is no possibility of performing
|
||||
// decryption for parameters provided.
|
||||
NoPossibleKeys(dcparameters map[string][][]byte) bool
|
||||
|
||||
// GetPrivateKeys (optional) gets the array of private keys. It is an optional implementation
|
||||
// as in some key services, a private key may not be exportable (i.e. HSM)
|
||||
// If not implemented, return nil
|
||||
GetPrivateKeys(dcparameters map[string][][]byte) [][]byte
|
||||
|
||||
// GetKeyIdsFromPacket (optional) gets a list of key IDs. This is optional as some encryption
|
||||
// schemes may not have a notion of key IDs
|
||||
// If not implemented, return the nil slice
|
||||
GetKeyIdsFromPacket(packet string) ([]uint64, error)
|
||||
|
||||
// GetRecipients (optional) gets a list of recipients. It is optional due to the validity of
|
||||
// recipients in a particular encryptiong scheme
|
||||
// If not implemented, return the nil slice
|
||||
GetRecipients(packet string) ([]string, error)
|
||||
}
|
||||
273
vendor/github.com/containers/ocicrypt/keywrap/pgp/keywrapper_gpg.go
generated
vendored
Normal file
273
vendor/github.com/containers/ocicrypt/keywrap/pgp/keywrapper_gpg.go
generated
vendored
Normal file
@ -0,0 +1,273 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package pgp
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/rand"
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net/mail"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/containers/ocicrypt/config"
|
||||
"github.com/containers/ocicrypt/keywrap"
|
||||
"github.com/pkg/errors"
|
||||
"golang.org/x/crypto/openpgp"
|
||||
"golang.org/x/crypto/openpgp/packet"
|
||||
)
|
||||
|
||||
type gpgKeyWrapper struct {
|
||||
}
|
||||
|
||||
// NewKeyWrapper returns a new key wrapping interface for pgp
|
||||
func NewKeyWrapper() keywrap.KeyWrapper {
|
||||
return &gpgKeyWrapper{}
|
||||
}
|
||||
|
||||
var (
|
||||
// GPGDefaultEncryptConfig is the default configuration for layer encryption/decryption
|
||||
GPGDefaultEncryptConfig = &packet.Config{
|
||||
Rand: rand.Reader,
|
||||
DefaultHash: crypto.SHA256,
|
||||
DefaultCipher: packet.CipherAES256,
|
||||
CompressionConfig: &packet.CompressionConfig{Level: 0}, // No compression
|
||||
RSABits: 2048,
|
||||
}
|
||||
)
|
||||
|
||||
func (kw *gpgKeyWrapper) GetAnnotationID() string {
|
||||
return "org.opencontainers.image.enc.keys.pgp"
|
||||
}
|
||||
|
||||
// WrapKeys wraps the session key for recpients and encrypts the optsData, which
|
||||
// describe the symmetric key used for encrypting the layer
|
||||
func (kw *gpgKeyWrapper) WrapKeys(ec *config.EncryptConfig, optsData []byte) ([]byte, error) {
|
||||
ciphertext := new(bytes.Buffer)
|
||||
el, err := kw.createEntityList(ec)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "unable to create entity list")
|
||||
}
|
||||
if len(el) == 0 {
|
||||
// nothing to do -- not an error
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
plaintextWriter, err := openpgp.Encrypt(ciphertext,
|
||||
el, /*EntityList*/
|
||||
nil, /* Sign*/
|
||||
nil, /* FileHint */
|
||||
GPGDefaultEncryptConfig)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if _, err = plaintextWriter.Write(optsData); err != nil {
|
||||
return nil, err
|
||||
} else if err = plaintextWriter.Close(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return ciphertext.Bytes(), err
|
||||
}
|
||||
|
||||
// UnwrapKey unwraps the symmetric key with which the layer is encrypted
|
||||
// This symmetric key is encrypted in the PGP payload.
|
||||
func (kw *gpgKeyWrapper) UnwrapKey(dc *config.DecryptConfig, pgpPacket []byte) ([]byte, error) {
|
||||
pgpPrivateKeys, pgpPrivateKeysPwd, err := kw.getKeyParameters(dc.Parameters)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for idx, pgpPrivateKey := range pgpPrivateKeys {
|
||||
r := bytes.NewBuffer(pgpPrivateKey)
|
||||
entityList, err := openpgp.ReadKeyRing(r)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "unable to parse private keys")
|
||||
}
|
||||
|
||||
var prompt openpgp.PromptFunction
|
||||
if len(pgpPrivateKeysPwd) > idx {
|
||||
responded := false
|
||||
prompt = func(keys []openpgp.Key, symmetric bool) ([]byte, error) {
|
||||
if responded {
|
||||
return nil, fmt.Errorf("don't seem to have the right password")
|
||||
}
|
||||
responded = true
|
||||
for _, key := range keys {
|
||||
if key.PrivateKey != nil {
|
||||
_ = key.PrivateKey.Decrypt(pgpPrivateKeysPwd[idx])
|
||||
}
|
||||
}
|
||||
return pgpPrivateKeysPwd[idx], nil
|
||||
}
|
||||
}
|
||||
|
||||
r = bytes.NewBuffer(pgpPacket)
|
||||
md, err := openpgp.ReadMessage(r, entityList, prompt, GPGDefaultEncryptConfig)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
// we get the plain key options back
|
||||
optsData, err := ioutil.ReadAll(md.UnverifiedBody)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
return optsData, nil
|
||||
}
|
||||
return nil, errors.New("PGP: No suitable key found to unwrap key")
|
||||
}
|
||||
|
||||
// GetKeyIdsFromWrappedKeys converts the base64 encoded PGPPacket to uint64 keyIds
|
||||
func (kw *gpgKeyWrapper) GetKeyIdsFromPacket(b64pgpPackets string) ([]uint64, error) {
|
||||
|
||||
var keyids []uint64
|
||||
for _, b64pgpPacket := range strings.Split(b64pgpPackets, ",") {
|
||||
pgpPacket, err := base64.StdEncoding.DecodeString(b64pgpPacket)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "could not decode base64 encoded PGP packet")
|
||||
}
|
||||
newids, err := kw.getKeyIDs(pgpPacket)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
keyids = append(keyids, newids...)
|
||||
}
|
||||
return keyids, nil
|
||||
}
|
||||
|
||||
// getKeyIDs parses a PGPPacket and gets the list of recipients' key IDs
|
||||
func (kw *gpgKeyWrapper) getKeyIDs(pgpPacket []byte) ([]uint64, error) {
|
||||
var keyids []uint64
|
||||
|
||||
kbuf := bytes.NewBuffer(pgpPacket)
|
||||
packets := packet.NewReader(kbuf)
|
||||
ParsePackets:
|
||||
for {
|
||||
p, err := packets.Next()
|
||||
if err == io.EOF {
|
||||
break ParsePackets
|
||||
}
|
||||
if err != nil {
|
||||
return []uint64{}, errors.Wrapf(err, "packets.Next() failed")
|
||||
}
|
||||
switch p := p.(type) {
|
||||
case *packet.EncryptedKey:
|
||||
keyids = append(keyids, p.KeyId)
|
||||
case *packet.SymmetricallyEncrypted:
|
||||
break ParsePackets
|
||||
}
|
||||
}
|
||||
return keyids, nil
|
||||
}
|
||||
|
||||
// GetRecipients converts the wrappedKeys to an array of recipients
|
||||
func (kw *gpgKeyWrapper) GetRecipients(b64pgpPackets string) ([]string, error) {
|
||||
keyIds, err := kw.GetKeyIdsFromPacket(b64pgpPackets)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var array []string
|
||||
for _, keyid := range keyIds {
|
||||
array = append(array, "0x"+strconv.FormatUint(keyid, 16))
|
||||
}
|
||||
return array, nil
|
||||
}
|
||||
|
||||
func (kw *gpgKeyWrapper) NoPossibleKeys(dcparameters map[string][][]byte) bool {
|
||||
return len(kw.GetPrivateKeys(dcparameters)) == 0
|
||||
}
|
||||
|
||||
func (kw *gpgKeyWrapper) GetPrivateKeys(dcparameters map[string][][]byte) [][]byte {
|
||||
return dcparameters["gpg-privatekeys"]
|
||||
}
|
||||
|
||||
func (kw *gpgKeyWrapper) getKeyParameters(dcparameters map[string][][]byte) ([][]byte, [][]byte, error) {
|
||||
|
||||
privKeys := kw.GetPrivateKeys(dcparameters)
|
||||
if len(privKeys) == 0 {
|
||||
return nil, nil, errors.New("GPG: Missing private key parameter")
|
||||
}
|
||||
|
||||
return privKeys, dcparameters["gpg-privatekeys-passwords"], nil
|
||||
}
|
||||
|
||||
// createEntityList creates the opengpg EntityList by reading the KeyRing
|
||||
// first and then filtering out recipients' keys
|
||||
func (kw *gpgKeyWrapper) createEntityList(ec *config.EncryptConfig) (openpgp.EntityList, error) {
|
||||
pgpPubringFile := ec.Parameters["gpg-pubkeyringfile"]
|
||||
if len(pgpPubringFile) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
r := bytes.NewReader(pgpPubringFile[0])
|
||||
|
||||
entityList, err := openpgp.ReadKeyRing(r)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
gpgRecipients := ec.Parameters["gpg-recipients"]
|
||||
if len(gpgRecipients) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
rSet := make(map[string]int)
|
||||
for _, r := range gpgRecipients {
|
||||
rSet[string(r)] = 0
|
||||
}
|
||||
|
||||
var filteredList openpgp.EntityList
|
||||
for _, entity := range entityList {
|
||||
for k := range entity.Identities {
|
||||
addr, err := mail.ParseAddress(k)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for _, r := range gpgRecipients {
|
||||
recp := string(r)
|
||||
if strings.Compare(addr.Name, recp) == 0 || strings.Compare(addr.Address, recp) == 0 {
|
||||
filteredList = append(filteredList, entity)
|
||||
rSet[recp] = rSet[recp] + 1
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// make sure we found keys for all the Recipients...
|
||||
var buffer bytes.Buffer
|
||||
notFound := false
|
||||
buffer.WriteString("PGP: No key found for the following recipients: ")
|
||||
|
||||
for k, v := range rSet {
|
||||
if v == 0 {
|
||||
if notFound {
|
||||
buffer.WriteString(", ")
|
||||
}
|
||||
buffer.WriteString(k)
|
||||
notFound = true
|
||||
}
|
||||
}
|
||||
|
||||
if notFound {
|
||||
return nil, errors.New(buffer.String())
|
||||
}
|
||||
|
||||
return filteredList, nil
|
||||
}
|
||||
136
vendor/github.com/containers/ocicrypt/keywrap/pkcs7/keywrapper_pkcs7.go
generated
vendored
Normal file
136
vendor/github.com/containers/ocicrypt/keywrap/pkcs7/keywrapper_pkcs7.go
generated
vendored
Normal file
@ -0,0 +1,136 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package pkcs7
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/x509"
|
||||
|
||||
"github.com/containers/ocicrypt/config"
|
||||
"github.com/containers/ocicrypt/keywrap"
|
||||
"github.com/containers/ocicrypt/utils"
|
||||
"github.com/fullsailor/pkcs7"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
type pkcs7KeyWrapper struct {
|
||||
}
|
||||
|
||||
// NewKeyWrapper returns a new key wrapping interface using jwe
|
||||
func NewKeyWrapper() keywrap.KeyWrapper {
|
||||
return &pkcs7KeyWrapper{}
|
||||
}
|
||||
|
||||
func (kw *pkcs7KeyWrapper) GetAnnotationID() string {
|
||||
return "org.opencontainers.image.enc.keys.pkcs7"
|
||||
}
|
||||
|
||||
// WrapKeys wraps the session key for recpients and encrypts the optsData, which
|
||||
// describe the symmetric key used for encrypting the layer
|
||||
func (kw *pkcs7KeyWrapper) WrapKeys(ec *config.EncryptConfig, optsData []byte) ([]byte, error) {
|
||||
x509Certs, err := collectX509s(ec.Parameters["x509s"])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// no recipients is not an error...
|
||||
if len(x509Certs) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
pkcs7.ContentEncryptionAlgorithm = pkcs7.EncryptionAlgorithmAES128GCM
|
||||
return pkcs7.Encrypt(optsData, x509Certs)
|
||||
}
|
||||
|
||||
func collectX509s(x509s [][]byte) ([]*x509.Certificate, error) {
|
||||
if len(x509s) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
var x509Certs []*x509.Certificate
|
||||
for _, x509 := range x509s {
|
||||
x509Cert, err := utils.ParseCertificate(x509, "PKCS7")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
x509Certs = append(x509Certs, x509Cert)
|
||||
}
|
||||
return x509Certs, nil
|
||||
}
|
||||
|
||||
func (kw *pkcs7KeyWrapper) NoPossibleKeys(dcparameters map[string][][]byte) bool {
|
||||
return len(kw.GetPrivateKeys(dcparameters)) == 0
|
||||
}
|
||||
|
||||
func (kw *pkcs7KeyWrapper) GetPrivateKeys(dcparameters map[string][][]byte) [][]byte {
|
||||
return dcparameters["privkeys"]
|
||||
}
|
||||
|
||||
func (kw *pkcs7KeyWrapper) getPrivateKeysPasswords(dcparameters map[string][][]byte) [][]byte {
|
||||
return dcparameters["privkeys-passwords"]
|
||||
}
|
||||
|
||||
// UnwrapKey unwraps the symmetric key with which the layer is encrypted
|
||||
// This symmetric key is encrypted in the PKCS7 payload.
|
||||
func (kw *pkcs7KeyWrapper) UnwrapKey(dc *config.DecryptConfig, pkcs7Packet []byte) ([]byte, error) {
|
||||
privKeys := kw.GetPrivateKeys(dc.Parameters)
|
||||
if len(privKeys) == 0 {
|
||||
return nil, errors.New("no private keys found for PKCS7 decryption")
|
||||
}
|
||||
privKeysPasswords := kw.getPrivateKeysPasswords(dc.Parameters)
|
||||
if len(privKeysPasswords) != len(privKeys) {
|
||||
return nil, errors.New("private key password array length must be same as that of private keys")
|
||||
}
|
||||
|
||||
x509Certs, err := collectX509s(dc.Parameters["x509s"])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(x509Certs) == 0 {
|
||||
return nil, errors.New("no x509 certificates found needed for PKCS7 decryption")
|
||||
}
|
||||
|
||||
p7, err := pkcs7.Parse(pkcs7Packet)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "could not parse PKCS7 packet")
|
||||
}
|
||||
|
||||
for idx, privKey := range privKeys {
|
||||
key, err := utils.ParsePrivateKey(privKey, privKeysPasswords[idx], "PKCS7")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for _, x509Cert := range x509Certs {
|
||||
optsData, err := p7.Decrypt(x509Cert, crypto.PrivateKey(key))
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
return optsData, nil
|
||||
}
|
||||
}
|
||||
return nil, errors.New("PKCS7: No suitable private key found for decryption")
|
||||
}
|
||||
|
||||
// GetKeyIdsFromWrappedKeys converts the base64 encoded Packet to uint64 keyIds;
|
||||
// We cannot do this with pkcs7
|
||||
func (kw *pkcs7KeyWrapper) GetKeyIdsFromPacket(b64pkcs7Packets string) ([]uint64, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// GetRecipients converts the wrappedKeys to an array of recipients
|
||||
// We cannot do this with pkcs7
|
||||
func (kw *pkcs7KeyWrapper) GetRecipients(b64pkcs7Packets string) ([]string, error) {
|
||||
return []string{"[pkcs7]"}, nil
|
||||
}
|
||||
40
vendor/github.com/containers/ocicrypt/reader.go
generated
vendored
Normal file
40
vendor/github.com/containers/ocicrypt/reader.go
generated
vendored
Normal file
@ -0,0 +1,40 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package ocicrypt
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
type readerAtReader struct {
|
||||
r io.ReaderAt
|
||||
off int64
|
||||
}
|
||||
|
||||
// ReaderFromReaderAt takes an io.ReaderAt and returns an io.Reader
|
||||
func ReaderFromReaderAt(r io.ReaderAt) io.Reader {
|
||||
return &readerAtReader{
|
||||
r: r,
|
||||
off: 0,
|
||||
}
|
||||
}
|
||||
|
||||
func (rar *readerAtReader) Read(p []byte) (n int, err error) {
|
||||
n, err = rar.r.ReadAt(p, rar.off)
|
||||
rar.off += int64(n)
|
||||
return n, err
|
||||
}
|
||||
12
vendor/github.com/containers/ocicrypt/spec/spec.go
generated
vendored
Normal file
12
vendor/github.com/containers/ocicrypt/spec/spec.go
generated
vendored
Normal file
@ -0,0 +1,12 @@
|
||||
package spec
|
||||
|
||||
const (
|
||||
// MediaTypeLayerEnc is MIME type used for encrypted layers.
|
||||
MediaTypeLayerEnc = "application/vnd.oci.image.layer.v1.tar+encrypted"
|
||||
// MediaTypeLayerGzipEnc is MIME type used for encrypted compressed layers.
|
||||
MediaTypeLayerGzipEnc = "application/vnd.oci.image.layer.v1.tar+gzip+encrypted"
|
||||
// MediaTypeLayerNonDistributableEnc is MIME type used for non distributable encrypted layers.
|
||||
MediaTypeLayerNonDistributableEnc = "application/vnd.oci.image.layer.nondistributable.v1.tar+encrypted"
|
||||
// MediaTypeLayerGzipEnc is MIME type used for non distributable encrypted compressed layers.
|
||||
MediaTypeLayerNonDistributableGzipEnc = "application/vnd.oci.image.layer.nondistributable.v1.tar+gzip+encrypted"
|
||||
)
|
||||
109
vendor/github.com/containers/ocicrypt/utils/delayedreader.go
generated
vendored
Normal file
109
vendor/github.com/containers/ocicrypt/utils/delayedreader.go
generated
vendored
Normal file
@ -0,0 +1,109 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package utils
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
func min(a, b int) int {
|
||||
if a < b {
|
||||
return a
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
// DelayedReader wraps a io.Reader and allows a client to use the Reader
|
||||
// interface. The DelayedReader holds back some buffer to the client
|
||||
// so that it can report any error that occurred on the Reader it wraps
|
||||
// early to the client while it may still have held some data back.
|
||||
type DelayedReader struct {
|
||||
reader io.Reader // Reader to Read() bytes from and delay them
|
||||
err error // error that occurred on the reader
|
||||
buffer []byte // delay buffer
|
||||
bufbytes int // number of bytes in the delay buffer to give to Read(); on '0' we return 'EOF' to caller
|
||||
bufoff int // offset in the delay buffer to give to Read()
|
||||
}
|
||||
|
||||
// NewDelayedReader wraps a io.Reader and allocates a delay buffer of bufsize bytes
|
||||
func NewDelayedReader(reader io.Reader, bufsize uint) io.Reader {
|
||||
return &DelayedReader{
|
||||
reader: reader,
|
||||
buffer: make([]byte, bufsize),
|
||||
}
|
||||
}
|
||||
|
||||
// Read implements the io.Reader interface
|
||||
func (dr *DelayedReader) Read(p []byte) (int, error) {
|
||||
if dr.err != nil && dr.err != io.EOF {
|
||||
return 0, dr.err
|
||||
}
|
||||
|
||||
// if we are completely drained, return io.EOF
|
||||
if dr.err == io.EOF && dr.bufbytes == 0 {
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
// only at the beginning we fill our delay buffer in an extra step
|
||||
if dr.bufbytes < len(dr.buffer) && dr.err == nil {
|
||||
dr.bufbytes, dr.err = FillBuffer(dr.reader, dr.buffer)
|
||||
if dr.err != nil && dr.err != io.EOF {
|
||||
return 0, dr.err
|
||||
}
|
||||
}
|
||||
// dr.err != nil means we have EOF and can drain the delay buffer
|
||||
// otherwise we need to still read from the reader
|
||||
|
||||
var tmpbuf []byte
|
||||
tmpbufbytes := 0
|
||||
if dr.err == nil {
|
||||
tmpbuf = make([]byte, len(p))
|
||||
tmpbufbytes, dr.err = FillBuffer(dr.reader, tmpbuf)
|
||||
if dr.err != nil && dr.err != io.EOF {
|
||||
return 0, dr.err
|
||||
}
|
||||
}
|
||||
|
||||
// copy out of the delay buffer into 'p'
|
||||
tocopy1 := min(len(p), dr.bufbytes)
|
||||
c1 := copy(p[:tocopy1], dr.buffer[dr.bufoff:])
|
||||
dr.bufoff += c1
|
||||
dr.bufbytes -= c1
|
||||
|
||||
c2 := 0
|
||||
// can p still hold more data?
|
||||
if c1 < len(p) {
|
||||
// copy out of the tmpbuf into 'p'
|
||||
c2 = copy(p[tocopy1:], tmpbuf[:tmpbufbytes])
|
||||
}
|
||||
|
||||
// if tmpbuf holds data we need to hold onto, copy them
|
||||
// into the delay buffer
|
||||
if tmpbufbytes-c2 > 0 {
|
||||
// left-shift the delay buffer and append the tmpbuf's remaining data
|
||||
dr.buffer = dr.buffer[dr.bufoff : dr.bufoff+dr.bufbytes]
|
||||
dr.buffer = append(dr.buffer, tmpbuf[c2:tmpbufbytes]...)
|
||||
dr.bufoff = 0
|
||||
dr.bufbytes = len(dr.buffer)
|
||||
}
|
||||
|
||||
var err error
|
||||
if dr.bufbytes == 0 {
|
||||
err = io.EOF
|
||||
}
|
||||
return c1 + c2, err
|
||||
}
|
||||
31
vendor/github.com/containers/ocicrypt/utils/ioutils.go
generated
vendored
Normal file
31
vendor/github.com/containers/ocicrypt/utils/ioutils.go
generated
vendored
Normal file
@ -0,0 +1,31 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package utils
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
// FillBuffer fills the given buffer with as many bytes from the reader as possible. It returns
|
||||
// EOF if an EOF was encountered or any other error.
|
||||
func FillBuffer(reader io.Reader, buffer []byte) (int, error) {
|
||||
n, err := io.ReadFull(reader, buffer)
|
||||
if err == io.ErrUnexpectedEOF {
|
||||
return n, io.EOF
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
166
vendor/github.com/containers/ocicrypt/utils/testing.go
generated
vendored
Normal file
166
vendor/github.com/containers/ocicrypt/utils/testing.go
generated
vendored
Normal file
@ -0,0 +1,166 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package utils
|
||||
|
||||
import (
|
||||
"crypto/ecdsa"
|
||||
"crypto/elliptic"
|
||||
"crypto/rand"
|
||||
"crypto/rsa"
|
||||
"crypto/x509"
|
||||
"crypto/x509/pkix"
|
||||
"encoding/pem"
|
||||
"math/big"
|
||||
"time"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// CreateRSAKey creates an RSA key
|
||||
func CreateRSAKey(bits int) (*rsa.PrivateKey, error) {
|
||||
key, err := rsa.GenerateKey(rand.Reader, bits)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "rsa.GenerateKey failed")
|
||||
}
|
||||
return key, nil
|
||||
}
|
||||
|
||||
// CreateRSATestKey creates an RSA key of the given size and returns
|
||||
// the public and private key in PEM or DER format
|
||||
func CreateRSATestKey(bits int, password []byte, pemencode bool) ([]byte, []byte, error) {
|
||||
key, err := CreateRSAKey(bits)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
pubData, err := x509.MarshalPKIXPublicKey(&key.PublicKey)
|
||||
if err != nil {
|
||||
return nil, nil, errors.Wrap(err, "x509.MarshalPKIXPublicKey failed")
|
||||
}
|
||||
privData := x509.MarshalPKCS1PrivateKey(key)
|
||||
|
||||
// no more encoding needed for DER
|
||||
if !pemencode {
|
||||
return pubData, privData, nil
|
||||
}
|
||||
|
||||
publicKey := pem.EncodeToMemory(&pem.Block{
|
||||
Type: "PUBLIC KEY",
|
||||
Bytes: pubData,
|
||||
})
|
||||
|
||||
var block *pem.Block
|
||||
|
||||
typ := "RSA PRIVATE KEY"
|
||||
if len(password) > 0 {
|
||||
block, err = x509.EncryptPEMBlock(rand.Reader, typ, privData, password, x509.PEMCipherAES256)
|
||||
if err != nil {
|
||||
return nil, nil, errors.Wrap(err, "x509.EncryptPEMBlock failed")
|
||||
}
|
||||
} else {
|
||||
block = &pem.Block{
|
||||
Type: typ,
|
||||
Bytes: privData,
|
||||
}
|
||||
}
|
||||
|
||||
privateKey := pem.EncodeToMemory(block)
|
||||
|
||||
return publicKey, privateKey, nil
|
||||
}
|
||||
|
||||
// CreateECDSATestKey creates and elliptic curve key for the given curve and returns
|
||||
// the public and private key in DER format
|
||||
func CreateECDSATestKey(curve elliptic.Curve) ([]byte, []byte, error) {
|
||||
key, err := ecdsa.GenerateKey(curve, rand.Reader)
|
||||
if err != nil {
|
||||
return nil, nil, errors.Wrapf(err, "ecdsa.GenerateKey failed")
|
||||
}
|
||||
|
||||
pubData, err := x509.MarshalPKIXPublicKey(&key.PublicKey)
|
||||
if err != nil {
|
||||
return nil, nil, errors.Wrapf(err, "x509.MarshalPKIXPublicKey failed")
|
||||
}
|
||||
|
||||
privData, err := x509.MarshalECPrivateKey(key)
|
||||
if err != nil {
|
||||
return nil, nil, errors.Wrapf(err, "x509.MarshalECPrivateKey failed")
|
||||
}
|
||||
|
||||
return pubData, privData, nil
|
||||
}
|
||||
|
||||
// CreateTestCA creates a root CA for testing
|
||||
func CreateTestCA() (*rsa.PrivateKey, *x509.Certificate, error) {
|
||||
key, err := rsa.GenerateKey(rand.Reader, 2048)
|
||||
if err != nil {
|
||||
return nil, nil, errors.Wrap(err, "rsa.GenerateKey failed")
|
||||
}
|
||||
|
||||
ca := &x509.Certificate{
|
||||
SerialNumber: big.NewInt(1),
|
||||
Subject: pkix.Name{
|
||||
CommonName: "test-ca",
|
||||
},
|
||||
NotBefore: time.Now(),
|
||||
NotAfter: time.Now().AddDate(1, 0, 0),
|
||||
IsCA: true,
|
||||
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
|
||||
BasicConstraintsValid: true,
|
||||
}
|
||||
caCert, err := certifyKey(&key.PublicKey, ca, key, ca)
|
||||
|
||||
return key, caCert, err
|
||||
}
|
||||
|
||||
// CertifyKey certifies a public key using the given CA's private key and cert;
|
||||
// The certificate template for the public key is optional
|
||||
func CertifyKey(pubbytes []byte, template *x509.Certificate, caKey *rsa.PrivateKey, caCert *x509.Certificate) (*x509.Certificate, error) {
|
||||
pubKey, err := ParsePublicKey(pubbytes, "CertifyKey")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return certifyKey(pubKey, template, caKey, caCert)
|
||||
}
|
||||
|
||||
func certifyKey(pub interface{}, template *x509.Certificate, caKey *rsa.PrivateKey, caCert *x509.Certificate) (*x509.Certificate, error) {
|
||||
if template == nil {
|
||||
template = &x509.Certificate{
|
||||
SerialNumber: big.NewInt(1),
|
||||
Subject: pkix.Name{
|
||||
CommonName: "testkey",
|
||||
},
|
||||
NotBefore: time.Now(),
|
||||
NotAfter: time.Now().Add(time.Hour),
|
||||
IsCA: false,
|
||||
KeyUsage: x509.KeyUsageDigitalSignature,
|
||||
BasicConstraintsValid: true,
|
||||
}
|
||||
}
|
||||
|
||||
certDER, err := x509.CreateCertificate(rand.Reader, template, caCert, pub, caKey)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "x509.CreateCertificate failed")
|
||||
}
|
||||
|
||||
cert, err := x509.ParseCertificate(certDER)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "x509.ParseCertificate failed")
|
||||
}
|
||||
|
||||
return cert, nil
|
||||
}
|
||||
220
vendor/github.com/containers/ocicrypt/utils/utils.go
generated
vendored
Normal file
220
vendor/github.com/containers/ocicrypt/utils/utils.go
generated
vendored
Normal file
@ -0,0 +1,220 @@
|
||||
/*
|
||||
Copyright The ocicrypt Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package utils
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/x509"
|
||||
"encoding/base64"
|
||||
"encoding/pem"
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
"golang.org/x/crypto/openpgp"
|
||||
json "gopkg.in/square/go-jose.v2"
|
||||
)
|
||||
|
||||
// parseJWKPrivateKey parses the input byte array as a JWK and makes sure it's a private key
|
||||
func parseJWKPrivateKey(privKey []byte, prefix string) (interface{}, error) {
|
||||
jwk := json.JSONWebKey{}
|
||||
err := jwk.UnmarshalJSON(privKey)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "%s: Could not parse input as JWK", prefix)
|
||||
}
|
||||
if jwk.IsPublic() {
|
||||
return nil, fmt.Errorf("%s: JWK is not a private key", prefix)
|
||||
}
|
||||
return &jwk, nil
|
||||
}
|
||||
|
||||
// parseJWKPublicKey parses the input byte array as a JWK
|
||||
func parseJWKPublicKey(privKey []byte, prefix string) (interface{}, error) {
|
||||
jwk := json.JSONWebKey{}
|
||||
err := jwk.UnmarshalJSON(privKey)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "%s: Could not parse input as JWK", prefix)
|
||||
}
|
||||
if !jwk.IsPublic() {
|
||||
return nil, fmt.Errorf("%s: JWK is not a public key", prefix)
|
||||
}
|
||||
return &jwk, nil
|
||||
}
|
||||
|
||||
// IsPasswordError checks whether an error is related to a missing or wrong
|
||||
// password
|
||||
func IsPasswordError(err error) bool {
|
||||
if err == nil {
|
||||
return false
|
||||
}
|
||||
msg := strings.ToLower(err.Error())
|
||||
|
||||
return strings.Contains(msg, "password") &&
|
||||
(strings.Contains(msg, "missing") || strings.Contains(msg, "wrong"))
|
||||
}
|
||||
|
||||
// ParsePrivateKey tries to parse a private key in DER format first and
|
||||
// PEM format after, returning an error if the parsing failed
|
||||
func ParsePrivateKey(privKey, privKeyPassword []byte, prefix string) (interface{}, error) {
|
||||
key, err := x509.ParsePKCS8PrivateKey(privKey)
|
||||
if err != nil {
|
||||
key, err = x509.ParsePKCS1PrivateKey(privKey)
|
||||
if err != nil {
|
||||
key, err = x509.ParseECPrivateKey(privKey)
|
||||
}
|
||||
}
|
||||
if err != nil {
|
||||
block, _ := pem.Decode(privKey)
|
||||
if block != nil {
|
||||
var der []byte
|
||||
if x509.IsEncryptedPEMBlock(block) {
|
||||
if privKeyPassword == nil {
|
||||
return nil, errors.Errorf("%s: Missing password for encrypted private key", prefix)
|
||||
}
|
||||
der, err = x509.DecryptPEMBlock(block, privKeyPassword)
|
||||
if err != nil {
|
||||
return nil, errors.Errorf("%s: Wrong password: could not decrypt private key", prefix)
|
||||
}
|
||||
} else {
|
||||
der = block.Bytes
|
||||
}
|
||||
|
||||
key, err = x509.ParsePKCS8PrivateKey(der)
|
||||
if err != nil {
|
||||
key, err = x509.ParsePKCS1PrivateKey(der)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "%s: Could not parse private key", prefix)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
key, err = parseJWKPrivateKey(privKey, prefix)
|
||||
}
|
||||
}
|
||||
return key, err
|
||||
}
|
||||
|
||||
// IsPrivateKey returns true in case the given byte array represents a private key
|
||||
// It returns an error if for example the password is wrong
|
||||
func IsPrivateKey(data []byte, password []byte) (bool, error) {
|
||||
_, err := ParsePrivateKey(data, password, "")
|
||||
return err == nil, err
|
||||
}
|
||||
|
||||
// ParsePublicKey tries to parse a public key in DER format first and
|
||||
// PEM format after, returning an error if the parsing failed
|
||||
func ParsePublicKey(pubKey []byte, prefix string) (interface{}, error) {
|
||||
key, err := x509.ParsePKIXPublicKey(pubKey)
|
||||
if err != nil {
|
||||
block, _ := pem.Decode(pubKey)
|
||||
if block != nil {
|
||||
key, err = x509.ParsePKIXPublicKey(block.Bytes)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "%s: Could not parse public key", prefix)
|
||||
}
|
||||
} else {
|
||||
key, err = parseJWKPublicKey(pubKey, prefix)
|
||||
}
|
||||
}
|
||||
return key, err
|
||||
}
|
||||
|
||||
// IsPublicKey returns true in case the given byte array represents a public key
|
||||
func IsPublicKey(data []byte) bool {
|
||||
_, err := ParsePublicKey(data, "")
|
||||
return err == nil
|
||||
}
|
||||
|
||||
// ParseCertificate tries to parse a public key in DER format first and
|
||||
// PEM format after, returning an error if the parsing failed
|
||||
func ParseCertificate(certBytes []byte, prefix string) (*x509.Certificate, error) {
|
||||
x509Cert, err := x509.ParseCertificate(certBytes)
|
||||
if err != nil {
|
||||
block, _ := pem.Decode(certBytes)
|
||||
if block == nil {
|
||||
return nil, fmt.Errorf("%s: Could not PEM decode x509 certificate", prefix)
|
||||
}
|
||||
x509Cert, err = x509.ParseCertificate(block.Bytes)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "%s: Could not parse x509 certificate", prefix)
|
||||
}
|
||||
}
|
||||
return x509Cert, err
|
||||
}
|
||||
|
||||
// IsCertificate returns true in case the given byte array represents an x.509 certificate
|
||||
func IsCertificate(data []byte) bool {
|
||||
_, err := ParseCertificate(data, "")
|
||||
return err == nil
|
||||
}
|
||||
|
||||
// IsGPGPrivateKeyRing returns true in case the given byte array represents a GPG private key ring file
|
||||
func IsGPGPrivateKeyRing(data []byte) bool {
|
||||
r := bytes.NewBuffer(data)
|
||||
_, err := openpgp.ReadKeyRing(r)
|
||||
return err == nil
|
||||
}
|
||||
|
||||
// SortDecryptionKeys parses a list of comma separated base64 entries and sorts the data into
|
||||
// a map. Each entry in the list may be either a GPG private key ring, private key, or x.509
|
||||
// certificate
|
||||
func SortDecryptionKeys(b64ItemList string) (map[string][][]byte, error) {
|
||||
dcparameters := make(map[string][][]byte)
|
||||
|
||||
for _, b64Item := range strings.Split(b64ItemList, ",") {
|
||||
var password []byte
|
||||
b64Data := strings.Split(b64Item, ":")
|
||||
keyData, err := base64.StdEncoding.DecodeString(b64Data[0])
|
||||
if err != nil {
|
||||
return nil, errors.New("Could not base64 decode a passed decryption key")
|
||||
}
|
||||
if len(b64Data) == 2 {
|
||||
password, err = base64.StdEncoding.DecodeString(b64Data[1])
|
||||
if err != nil {
|
||||
return nil, errors.New("Could not base64 decode a passed decryption key password")
|
||||
}
|
||||
}
|
||||
var key string
|
||||
isPrivKey, err := IsPrivateKey(keyData, password)
|
||||
if IsPasswordError(err) {
|
||||
return nil, err
|
||||
}
|
||||
if isPrivKey {
|
||||
key = "privkeys"
|
||||
if _, ok := dcparameters["privkeys-passwords"]; !ok {
|
||||
dcparameters["privkeys-passwords"] = [][]byte{password}
|
||||
} else {
|
||||
dcparameters["privkeys-passwords"] = append(dcparameters["privkeys-passwords"], password)
|
||||
}
|
||||
} else if IsCertificate(keyData) {
|
||||
key = "x509s"
|
||||
} else if IsGPGPrivateKeyRing(keyData) {
|
||||
key = "gpg-privatekeys"
|
||||
}
|
||||
if key != "" {
|
||||
values := dcparameters[key]
|
||||
if values == nil {
|
||||
dcparameters[key] = [][]byte{keyData}
|
||||
} else {
|
||||
dcparameters[key] = append(dcparameters[key], keyData)
|
||||
}
|
||||
} else {
|
||||
return nil, errors.New("Unknown decryption key type")
|
||||
}
|
||||
}
|
||||
|
||||
return dcparameters, nil
|
||||
}
|
||||
22
vendor/github.com/fullsailor/pkcs7/LICENSE
generated
vendored
Normal file
22
vendor/github.com/fullsailor/pkcs7/LICENSE
generated
vendored
Normal file
@ -0,0 +1,22 @@
|
||||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2015 Andrew Smith
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
||||
8
vendor/github.com/fullsailor/pkcs7/README.md
generated
vendored
Normal file
8
vendor/github.com/fullsailor/pkcs7/README.md
generated
vendored
Normal file
@ -0,0 +1,8 @@
|
||||
# pkcs7
|
||||
|
||||
[](https://godoc.org/github.com/fullsailor/pkcs7)
|
||||
[](https://travis-ci.org/fullsailor/pkcs7)
|
||||
|
||||
pkcs7 implements parsing and creating signed and enveloped messages.
|
||||
|
||||
- Documentation on [GoDoc](http://godoc.org/github.com/fullsailor/pkcs7)
|
||||
248
vendor/github.com/fullsailor/pkcs7/ber.go
generated
vendored
Normal file
248
vendor/github.com/fullsailor/pkcs7/ber.go
generated
vendored
Normal file
@ -0,0 +1,248 @@
|
||||
package pkcs7
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
)
|
||||
|
||||
var encodeIndent = 0
|
||||
|
||||
type asn1Object interface {
|
||||
EncodeTo(writer *bytes.Buffer) error
|
||||
}
|
||||
|
||||
type asn1Structured struct {
|
||||
tagBytes []byte
|
||||
content []asn1Object
|
||||
}
|
||||
|
||||
func (s asn1Structured) EncodeTo(out *bytes.Buffer) error {
|
||||
//fmt.Printf("%s--> tag: % X\n", strings.Repeat("| ", encodeIndent), s.tagBytes)
|
||||
encodeIndent++
|
||||
inner := new(bytes.Buffer)
|
||||
for _, obj := range s.content {
|
||||
err := obj.EncodeTo(inner)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
encodeIndent--
|
||||
out.Write(s.tagBytes)
|
||||
encodeLength(out, inner.Len())
|
||||
out.Write(inner.Bytes())
|
||||
return nil
|
||||
}
|
||||
|
||||
type asn1Primitive struct {
|
||||
tagBytes []byte
|
||||
length int
|
||||
content []byte
|
||||
}
|
||||
|
||||
func (p asn1Primitive) EncodeTo(out *bytes.Buffer) error {
|
||||
_, err := out.Write(p.tagBytes)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err = encodeLength(out, p.length); err != nil {
|
||||
return err
|
||||
}
|
||||
//fmt.Printf("%s--> tag: % X length: %d\n", strings.Repeat("| ", encodeIndent), p.tagBytes, p.length)
|
||||
//fmt.Printf("%s--> content length: %d\n", strings.Repeat("| ", encodeIndent), len(p.content))
|
||||
out.Write(p.content)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func ber2der(ber []byte) ([]byte, error) {
|
||||
if len(ber) == 0 {
|
||||
return nil, errors.New("ber2der: input ber is empty")
|
||||
}
|
||||
//fmt.Printf("--> ber2der: Transcoding %d bytes\n", len(ber))
|
||||
out := new(bytes.Buffer)
|
||||
|
||||
obj, _, err := readObject(ber, 0)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
obj.EncodeTo(out)
|
||||
|
||||
// if offset < len(ber) {
|
||||
// return nil, fmt.Errorf("ber2der: Content longer than expected. Got %d, expected %d", offset, len(ber))
|
||||
//}
|
||||
|
||||
return out.Bytes(), nil
|
||||
}
|
||||
|
||||
// encodes lengths that are longer than 127 into string of bytes
|
||||
func marshalLongLength(out *bytes.Buffer, i int) (err error) {
|
||||
n := lengthLength(i)
|
||||
|
||||
for ; n > 0; n-- {
|
||||
err = out.WriteByte(byte(i >> uint((n-1)*8)))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// computes the byte length of an encoded length value
|
||||
func lengthLength(i int) (numBytes int) {
|
||||
numBytes = 1
|
||||
for i > 255 {
|
||||
numBytes++
|
||||
i >>= 8
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// encodes the length in DER format
|
||||
// If the length fits in 7 bits, the value is encoded directly.
|
||||
//
|
||||
// Otherwise, the number of bytes to encode the length is first determined.
|
||||
// This number is likely to be 4 or less for a 32bit length. This number is
|
||||
// added to 0x80. The length is encoded in big endian encoding follow after
|
||||
//
|
||||
// Examples:
|
||||
// length | byte 1 | bytes n
|
||||
// 0 | 0x00 | -
|
||||
// 120 | 0x78 | -
|
||||
// 200 | 0x81 | 0xC8
|
||||
// 500 | 0x82 | 0x01 0xF4
|
||||
//
|
||||
func encodeLength(out *bytes.Buffer, length int) (err error) {
|
||||
if length >= 128 {
|
||||
l := lengthLength(length)
|
||||
err = out.WriteByte(0x80 | byte(l))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = marshalLongLength(out, length)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
} else {
|
||||
err = out.WriteByte(byte(length))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func readObject(ber []byte, offset int) (asn1Object, int, error) {
|
||||
//fmt.Printf("\n====> Starting readObject at offset: %d\n\n", offset)
|
||||
tagStart := offset
|
||||
b := ber[offset]
|
||||
offset++
|
||||
tag := b & 0x1F // last 5 bits
|
||||
if tag == 0x1F {
|
||||
tag = 0
|
||||
for ber[offset] >= 0x80 {
|
||||
tag = tag*128 + ber[offset] - 0x80
|
||||
offset++
|
||||
}
|
||||
tag = tag*128 + ber[offset] - 0x80
|
||||
offset++
|
||||
}
|
||||
tagEnd := offset
|
||||
|
||||
kind := b & 0x20
|
||||
/*
|
||||
if kind == 0 {
|
||||
fmt.Print("--> Primitive\n")
|
||||
} else {
|
||||
fmt.Print("--> Constructed\n")
|
||||
}
|
||||
*/
|
||||
// read length
|
||||
var length int
|
||||
l := ber[offset]
|
||||
offset++
|
||||
indefinite := false
|
||||
if l > 0x80 {
|
||||
numberOfBytes := (int)(l & 0x7F)
|
||||
if numberOfBytes > 4 { // int is only guaranteed to be 32bit
|
||||
return nil, 0, errors.New("ber2der: BER tag length too long")
|
||||
}
|
||||
if numberOfBytes == 4 && (int)(ber[offset]) > 0x7F {
|
||||
return nil, 0, errors.New("ber2der: BER tag length is negative")
|
||||
}
|
||||
if 0x0 == (int)(ber[offset]) {
|
||||
return nil, 0, errors.New("ber2der: BER tag length has leading zero")
|
||||
}
|
||||
//fmt.Printf("--> (compute length) indicator byte: %x\n", l)
|
||||
//fmt.Printf("--> (compute length) length bytes: % X\n", ber[offset:offset+numberOfBytes])
|
||||
for i := 0; i < numberOfBytes; i++ {
|
||||
length = length*256 + (int)(ber[offset])
|
||||
offset++
|
||||
}
|
||||
} else if l == 0x80 {
|
||||
indefinite = true
|
||||
} else {
|
||||
length = (int)(l)
|
||||
}
|
||||
|
||||
//fmt.Printf("--> length : %d\n", length)
|
||||
contentEnd := offset + length
|
||||
if contentEnd > len(ber) {
|
||||
return nil, 0, errors.New("ber2der: BER tag length is more than available data")
|
||||
}
|
||||
//fmt.Printf("--> content start : %d\n", offset)
|
||||
//fmt.Printf("--> content end : %d\n", contentEnd)
|
||||
//fmt.Printf("--> content : % X\n", ber[offset:contentEnd])
|
||||
var obj asn1Object
|
||||
if indefinite && kind == 0 {
|
||||
return nil, 0, errors.New("ber2der: Indefinite form tag must have constructed encoding")
|
||||
}
|
||||
if kind == 0 {
|
||||
obj = asn1Primitive{
|
||||
tagBytes: ber[tagStart:tagEnd],
|
||||
length: length,
|
||||
content: ber[offset:contentEnd],
|
||||
}
|
||||
} else {
|
||||
var subObjects []asn1Object
|
||||
for (offset < contentEnd) || indefinite {
|
||||
var subObj asn1Object
|
||||
var err error
|
||||
subObj, offset, err = readObject(ber, offset)
|
||||
if err != nil {
|
||||
return nil, 0, err
|
||||
}
|
||||
subObjects = append(subObjects, subObj)
|
||||
|
||||
if indefinite {
|
||||
terminated, err := isIndefiniteTermination(ber, offset)
|
||||
if err != nil {
|
||||
return nil, 0, err
|
||||
}
|
||||
|
||||
if terminated {
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
obj = asn1Structured{
|
||||
tagBytes: ber[tagStart:tagEnd],
|
||||
content: subObjects,
|
||||
}
|
||||
}
|
||||
|
||||
// Apply indefinite form length with 0x0000 terminator.
|
||||
if indefinite {
|
||||
contentEnd = offset + 2
|
||||
}
|
||||
|
||||
return obj, contentEnd, nil
|
||||
}
|
||||
|
||||
func isIndefiniteTermination(ber []byte, offset int) (bool, error) {
|
||||
if len(ber) - offset < 2 {
|
||||
return false, errors.New("ber2der: Invalid BER format")
|
||||
}
|
||||
|
||||
return bytes.Index(ber[offset:], []byte{0x0, 0x0}) == 0, nil
|
||||
}
|
||||
962
vendor/github.com/fullsailor/pkcs7/pkcs7.go
generated
vendored
Normal file
962
vendor/github.com/fullsailor/pkcs7/pkcs7.go
generated
vendored
Normal file
@ -0,0 +1,962 @@
|
||||
// Package pkcs7 implements parsing and generation of some PKCS#7 structures.
|
||||
package pkcs7
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"crypto/des"
|
||||
"crypto/hmac"
|
||||
"crypto/rand"
|
||||
"crypto/rsa"
|
||||
"crypto/x509"
|
||||
"crypto/x509/pkix"
|
||||
"encoding/asn1"
|
||||
"errors"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"sort"
|
||||
"time"
|
||||
|
||||
_ "crypto/sha1" // for crypto.SHA1
|
||||
)
|
||||
|
||||
// PKCS7 Represents a PKCS7 structure
|
||||
type PKCS7 struct {
|
||||
Content []byte
|
||||
Certificates []*x509.Certificate
|
||||
CRLs []pkix.CertificateList
|
||||
Signers []signerInfo
|
||||
raw interface{}
|
||||
}
|
||||
|
||||
type contentInfo struct {
|
||||
ContentType asn1.ObjectIdentifier
|
||||
Content asn1.RawValue `asn1:"explicit,optional,tag:0"`
|
||||
}
|
||||
|
||||
// ErrUnsupportedContentType is returned when a PKCS7 content is not supported.
|
||||
// Currently only Data (1.2.840.113549.1.7.1), Signed Data (1.2.840.113549.1.7.2),
|
||||
// and Enveloped Data are supported (1.2.840.113549.1.7.3)
|
||||
var ErrUnsupportedContentType = errors.New("pkcs7: cannot parse data: unimplemented content type")
|
||||
|
||||
type unsignedData []byte
|
||||
|
||||
var (
|
||||
oidData = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 1}
|
||||
oidSignedData = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 2}
|
||||
oidEnvelopedData = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 3}
|
||||
oidSignedAndEnvelopedData = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 4}
|
||||
oidDigestedData = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 5}
|
||||
oidEncryptedData = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 6}
|
||||
oidAttributeContentType = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 3}
|
||||
oidAttributeMessageDigest = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 4}
|
||||
oidAttributeSigningTime = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 5}
|
||||
)
|
||||
|
||||
type signedData struct {
|
||||
Version int `asn1:"default:1"`
|
||||
DigestAlgorithmIdentifiers []pkix.AlgorithmIdentifier `asn1:"set"`
|
||||
ContentInfo contentInfo
|
||||
Certificates rawCertificates `asn1:"optional,tag:0"`
|
||||
CRLs []pkix.CertificateList `asn1:"optional,tag:1"`
|
||||
SignerInfos []signerInfo `asn1:"set"`
|
||||
}
|
||||
|
||||
type rawCertificates struct {
|
||||
Raw asn1.RawContent
|
||||
}
|
||||
|
||||
type envelopedData struct {
|
||||
Version int
|
||||
RecipientInfos []recipientInfo `asn1:"set"`
|
||||
EncryptedContentInfo encryptedContentInfo
|
||||
}
|
||||
|
||||
type recipientInfo struct {
|
||||
Version int
|
||||
IssuerAndSerialNumber issuerAndSerial
|
||||
KeyEncryptionAlgorithm pkix.AlgorithmIdentifier
|
||||
EncryptedKey []byte
|
||||
}
|
||||
|
||||
type encryptedContentInfo struct {
|
||||
ContentType asn1.ObjectIdentifier
|
||||
ContentEncryptionAlgorithm pkix.AlgorithmIdentifier
|
||||
EncryptedContent asn1.RawValue `asn1:"tag:0,optional"`
|
||||
}
|
||||
|
||||
type attribute struct {
|
||||
Type asn1.ObjectIdentifier
|
||||
Value asn1.RawValue `asn1:"set"`
|
||||
}
|
||||
|
||||
type issuerAndSerial struct {
|
||||
IssuerName asn1.RawValue
|
||||
SerialNumber *big.Int
|
||||
}
|
||||
|
||||
// MessageDigestMismatchError is returned when the signer data digest does not
|
||||
// match the computed digest for the contained content
|
||||
type MessageDigestMismatchError struct {
|
||||
ExpectedDigest []byte
|
||||
ActualDigest []byte
|
||||
}
|
||||
|
||||
func (err *MessageDigestMismatchError) Error() string {
|
||||
return fmt.Sprintf("pkcs7: Message digest mismatch\n\tExpected: %X\n\tActual : %X", err.ExpectedDigest, err.ActualDigest)
|
||||
}
|
||||
|
||||
type signerInfo struct {
|
||||
Version int `asn1:"default:1"`
|
||||
IssuerAndSerialNumber issuerAndSerial
|
||||
DigestAlgorithm pkix.AlgorithmIdentifier
|
||||
AuthenticatedAttributes []attribute `asn1:"optional,tag:0"`
|
||||
DigestEncryptionAlgorithm pkix.AlgorithmIdentifier
|
||||
EncryptedDigest []byte
|
||||
UnauthenticatedAttributes []attribute `asn1:"optional,tag:1"`
|
||||
}
|
||||
|
||||
// Parse decodes a DER encoded PKCS7 package
|
||||
func Parse(data []byte) (p7 *PKCS7, err error) {
|
||||
if len(data) == 0 {
|
||||
return nil, errors.New("pkcs7: input data is empty")
|
||||
}
|
||||
var info contentInfo
|
||||
der, err := ber2der(data)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
rest, err := asn1.Unmarshal(der, &info)
|
||||
if len(rest) > 0 {
|
||||
err = asn1.SyntaxError{Msg: "trailing data"}
|
||||
return
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// fmt.Printf("--> Content Type: %s", info.ContentType)
|
||||
switch {
|
||||
case info.ContentType.Equal(oidSignedData):
|
||||
return parseSignedData(info.Content.Bytes)
|
||||
case info.ContentType.Equal(oidEnvelopedData):
|
||||
return parseEnvelopedData(info.Content.Bytes)
|
||||
}
|
||||
return nil, ErrUnsupportedContentType
|
||||
}
|
||||
|
||||
func parseSignedData(data []byte) (*PKCS7, error) {
|
||||
var sd signedData
|
||||
asn1.Unmarshal(data, &sd)
|
||||
certs, err := sd.Certificates.Parse()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// fmt.Printf("--> Signed Data Version %d\n", sd.Version)
|
||||
|
||||
var compound asn1.RawValue
|
||||
var content unsignedData
|
||||
|
||||
// The Content.Bytes maybe empty on PKI responses.
|
||||
if len(sd.ContentInfo.Content.Bytes) > 0 {
|
||||
if _, err := asn1.Unmarshal(sd.ContentInfo.Content.Bytes, &compound); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
// Compound octet string
|
||||
if compound.IsCompound {
|
||||
if _, err = asn1.Unmarshal(compound.Bytes, &content); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
// assuming this is tag 04
|
||||
content = compound.Bytes
|
||||
}
|
||||
return &PKCS7{
|
||||
Content: content,
|
||||
Certificates: certs,
|
||||
CRLs: sd.CRLs,
|
||||
Signers: sd.SignerInfos,
|
||||
raw: sd}, nil
|
||||
}
|
||||
|
||||
func (raw rawCertificates) Parse() ([]*x509.Certificate, error) {
|
||||
if len(raw.Raw) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
var val asn1.RawValue
|
||||
if _, err := asn1.Unmarshal(raw.Raw, &val); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return x509.ParseCertificates(val.Bytes)
|
||||
}
|
||||
|
||||
func parseEnvelopedData(data []byte) (*PKCS7, error) {
|
||||
var ed envelopedData
|
||||
if _, err := asn1.Unmarshal(data, &ed); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &PKCS7{
|
||||
raw: ed,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Verify checks the signatures of a PKCS7 object
|
||||
// WARNING: Verify does not check signing time or verify certificate chains at
|
||||
// this time.
|
||||
func (p7 *PKCS7) Verify() (err error) {
|
||||
if len(p7.Signers) == 0 {
|
||||
return errors.New("pkcs7: Message has no signers")
|
||||
}
|
||||
for _, signer := range p7.Signers {
|
||||
if err := verifySignature(p7, signer); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func verifySignature(p7 *PKCS7, signer signerInfo) error {
|
||||
signedData := p7.Content
|
||||
hash, err := getHashForOID(signer.DigestAlgorithm.Algorithm)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(signer.AuthenticatedAttributes) > 0 {
|
||||
// TODO(fullsailor): First check the content type match
|
||||
var digest []byte
|
||||
err := unmarshalAttribute(signer.AuthenticatedAttributes, oidAttributeMessageDigest, &digest)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
h := hash.New()
|
||||
h.Write(p7.Content)
|
||||
computed := h.Sum(nil)
|
||||
if !hmac.Equal(digest, computed) {
|
||||
return &MessageDigestMismatchError{
|
||||
ExpectedDigest: digest,
|
||||
ActualDigest: computed,
|
||||
}
|
||||
}
|
||||
// TODO(fullsailor): Optionally verify certificate chain
|
||||
// TODO(fullsailor): Optionally verify signingTime against certificate NotAfter/NotBefore
|
||||
signedData, err = marshalAttributes(signer.AuthenticatedAttributes)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
cert := getCertFromCertsByIssuerAndSerial(p7.Certificates, signer.IssuerAndSerialNumber)
|
||||
if cert == nil {
|
||||
return errors.New("pkcs7: No certificate for signer")
|
||||
}
|
||||
|
||||
algo := getSignatureAlgorithmFromAI(signer.DigestEncryptionAlgorithm)
|
||||
if algo == x509.UnknownSignatureAlgorithm {
|
||||
// I'm not sure what the spec here is, and the openssl sources were not
|
||||
// helpful. But, this is what App Store receipts appear to do.
|
||||
// The DigestEncryptionAlgorithm is just "rsaEncryption (PKCS #1)"
|
||||
// But we're expecting a digest + encryption algorithm. So... we're going
|
||||
// to determine an algorithm based on the DigestAlgorithm and this
|
||||
// encryption algorithm.
|
||||
if signer.DigestEncryptionAlgorithm.Algorithm.Equal(oidEncryptionAlgorithmRSA) {
|
||||
algo = getRSASignatureAlgorithmForDigestAlgorithm(hash)
|
||||
}
|
||||
}
|
||||
return cert.CheckSignature(algo, signedData, signer.EncryptedDigest)
|
||||
}
|
||||
|
||||
func marshalAttributes(attrs []attribute) ([]byte, error) {
|
||||
encodedAttributes, err := asn1.Marshal(struct {
|
||||
A []attribute `asn1:"set"`
|
||||
}{A: attrs})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Remove the leading sequence octets
|
||||
var raw asn1.RawValue
|
||||
asn1.Unmarshal(encodedAttributes, &raw)
|
||||
return raw.Bytes, nil
|
||||
}
|
||||
|
||||
var (
|
||||
oidDigestAlgorithmSHA1 = asn1.ObjectIdentifier{1, 3, 14, 3, 2, 26}
|
||||
oidEncryptionAlgorithmRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
|
||||
)
|
||||
|
||||
func getCertFromCertsByIssuerAndSerial(certs []*x509.Certificate, ias issuerAndSerial) *x509.Certificate {
|
||||
for _, cert := range certs {
|
||||
if isCertMatchForIssuerAndSerial(cert, ias) {
|
||||
return cert
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func getHashForOID(oid asn1.ObjectIdentifier) (crypto.Hash, error) {
|
||||
switch {
|
||||
case oid.Equal(oidDigestAlgorithmSHA1):
|
||||
return crypto.SHA1, nil
|
||||
case oid.Equal(oidSHA256):
|
||||
return crypto.SHA256, nil
|
||||
}
|
||||
return crypto.Hash(0), ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
func getRSASignatureAlgorithmForDigestAlgorithm(hash crypto.Hash) x509.SignatureAlgorithm {
|
||||
for _, details := range signatureAlgorithmDetails {
|
||||
if details.pubKeyAlgo == x509.RSA && details.hash == hash {
|
||||
return details.algo
|
||||
}
|
||||
}
|
||||
return x509.UnknownSignatureAlgorithm
|
||||
}
|
||||
|
||||
// GetOnlySigner returns an x509.Certificate for the first signer of the signed
|
||||
// data payload. If there are more or less than one signer, nil is returned
|
||||
func (p7 *PKCS7) GetOnlySigner() *x509.Certificate {
|
||||
if len(p7.Signers) != 1 {
|
||||
return nil
|
||||
}
|
||||
signer := p7.Signers[0]
|
||||
return getCertFromCertsByIssuerAndSerial(p7.Certificates, signer.IssuerAndSerialNumber)
|
||||
}
|
||||
|
||||
// ErrUnsupportedAlgorithm tells you when our quick dev assumptions have failed
|
||||
var ErrUnsupportedAlgorithm = errors.New("pkcs7: cannot decrypt data: only RSA, DES, DES-EDE3, AES-256-CBC and AES-128-GCM supported")
|
||||
|
||||
// ErrNotEncryptedContent is returned when attempting to Decrypt data that is not encrypted data
|
||||
var ErrNotEncryptedContent = errors.New("pkcs7: content data is a decryptable data type")
|
||||
|
||||
// Decrypt decrypts encrypted content info for recipient cert and private key
|
||||
func (p7 *PKCS7) Decrypt(cert *x509.Certificate, pk crypto.PrivateKey) ([]byte, error) {
|
||||
data, ok := p7.raw.(envelopedData)
|
||||
if !ok {
|
||||
return nil, ErrNotEncryptedContent
|
||||
}
|
||||
recipient := selectRecipientForCertificate(data.RecipientInfos, cert)
|
||||
if recipient.EncryptedKey == nil {
|
||||
return nil, errors.New("pkcs7: no enveloped recipient for provided certificate")
|
||||
}
|
||||
if priv := pk.(*rsa.PrivateKey); priv != nil {
|
||||
var contentKey []byte
|
||||
contentKey, err := rsa.DecryptPKCS1v15(rand.Reader, priv, recipient.EncryptedKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return data.EncryptedContentInfo.decrypt(contentKey)
|
||||
}
|
||||
fmt.Printf("Unsupported Private Key: %v\n", pk)
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
var oidEncryptionAlgorithmDESCBC = asn1.ObjectIdentifier{1, 3, 14, 3, 2, 7}
|
||||
var oidEncryptionAlgorithmDESEDE3CBC = asn1.ObjectIdentifier{1, 2, 840, 113549, 3, 7}
|
||||
var oidEncryptionAlgorithmAES256CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 42}
|
||||
var oidEncryptionAlgorithmAES128GCM = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 6}
|
||||
var oidEncryptionAlgorithmAES128CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 2}
|
||||
|
||||
func (eci encryptedContentInfo) decrypt(key []byte) ([]byte, error) {
|
||||
alg := eci.ContentEncryptionAlgorithm.Algorithm
|
||||
if !alg.Equal(oidEncryptionAlgorithmDESCBC) &&
|
||||
!alg.Equal(oidEncryptionAlgorithmDESEDE3CBC) &&
|
||||
!alg.Equal(oidEncryptionAlgorithmAES256CBC) &&
|
||||
!alg.Equal(oidEncryptionAlgorithmAES128CBC) &&
|
||||
!alg.Equal(oidEncryptionAlgorithmAES128GCM) {
|
||||
fmt.Printf("Unsupported Content Encryption Algorithm: %s\n", alg)
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// EncryptedContent can either be constructed of multple OCTET STRINGs
|
||||
// or _be_ a tagged OCTET STRING
|
||||
var cyphertext []byte
|
||||
if eci.EncryptedContent.IsCompound {
|
||||
// Complex case to concat all of the children OCTET STRINGs
|
||||
var buf bytes.Buffer
|
||||
cypherbytes := eci.EncryptedContent.Bytes
|
||||
for {
|
||||
var part []byte
|
||||
cypherbytes, _ = asn1.Unmarshal(cypherbytes, &part)
|
||||
buf.Write(part)
|
||||
if cypherbytes == nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
cyphertext = buf.Bytes()
|
||||
} else {
|
||||
// Simple case, the bytes _are_ the cyphertext
|
||||
cyphertext = eci.EncryptedContent.Bytes
|
||||
}
|
||||
|
||||
var block cipher.Block
|
||||
var err error
|
||||
|
||||
switch {
|
||||
case alg.Equal(oidEncryptionAlgorithmDESCBC):
|
||||
block, err = des.NewCipher(key)
|
||||
case alg.Equal(oidEncryptionAlgorithmDESEDE3CBC):
|
||||
block, err = des.NewTripleDESCipher(key)
|
||||
case alg.Equal(oidEncryptionAlgorithmAES256CBC):
|
||||
fallthrough
|
||||
case alg.Equal(oidEncryptionAlgorithmAES128GCM), alg.Equal(oidEncryptionAlgorithmAES128CBC):
|
||||
block, err = aes.NewCipher(key)
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if alg.Equal(oidEncryptionAlgorithmAES128GCM) {
|
||||
params := aesGCMParameters{}
|
||||
paramBytes := eci.ContentEncryptionAlgorithm.Parameters.Bytes
|
||||
|
||||
_, err := asn1.Unmarshal(paramBytes, ¶ms)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
gcm, err := cipher.NewGCM(block)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(params.Nonce) != gcm.NonceSize() {
|
||||
return nil, errors.New("pkcs7: encryption algorithm parameters are incorrect")
|
||||
}
|
||||
if params.ICVLen != gcm.Overhead() {
|
||||
return nil, errors.New("pkcs7: encryption algorithm parameters are incorrect")
|
||||
}
|
||||
|
||||
plaintext, err := gcm.Open(nil, params.Nonce, cyphertext, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return plaintext, nil
|
||||
}
|
||||
|
||||
iv := eci.ContentEncryptionAlgorithm.Parameters.Bytes
|
||||
if len(iv) != block.BlockSize() {
|
||||
return nil, errors.New("pkcs7: encryption algorithm parameters are malformed")
|
||||
}
|
||||
mode := cipher.NewCBCDecrypter(block, iv)
|
||||
plaintext := make([]byte, len(cyphertext))
|
||||
mode.CryptBlocks(plaintext, cyphertext)
|
||||
if plaintext, err = unpad(plaintext, mode.BlockSize()); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return plaintext, nil
|
||||
}
|
||||
|
||||
func selectRecipientForCertificate(recipients []recipientInfo, cert *x509.Certificate) recipientInfo {
|
||||
for _, recp := range recipients {
|
||||
if isCertMatchForIssuerAndSerial(cert, recp.IssuerAndSerialNumber) {
|
||||
return recp
|
||||
}
|
||||
}
|
||||
return recipientInfo{}
|
||||
}
|
||||
|
||||
func isCertMatchForIssuerAndSerial(cert *x509.Certificate, ias issuerAndSerial) bool {
|
||||
return cert.SerialNumber.Cmp(ias.SerialNumber) == 0 && bytes.Compare(cert.RawIssuer, ias.IssuerName.FullBytes) == 0
|
||||
}
|
||||
|
||||
func pad(data []byte, blocklen int) ([]byte, error) {
|
||||
if blocklen < 1 {
|
||||
return nil, fmt.Errorf("invalid blocklen %d", blocklen)
|
||||
}
|
||||
padlen := blocklen - (len(data) % blocklen)
|
||||
if padlen == 0 {
|
||||
padlen = blocklen
|
||||
}
|
||||
pad := bytes.Repeat([]byte{byte(padlen)}, padlen)
|
||||
return append(data, pad...), nil
|
||||
}
|
||||
|
||||
func unpad(data []byte, blocklen int) ([]byte, error) {
|
||||
if blocklen < 1 {
|
||||
return nil, fmt.Errorf("invalid blocklen %d", blocklen)
|
||||
}
|
||||
if len(data)%blocklen != 0 || len(data) == 0 {
|
||||
return nil, fmt.Errorf("invalid data len %d", len(data))
|
||||
}
|
||||
|
||||
// the last byte is the length of padding
|
||||
padlen := int(data[len(data)-1])
|
||||
|
||||
// check padding integrity, all bytes should be the same
|
||||
pad := data[len(data)-padlen:]
|
||||
for _, padbyte := range pad {
|
||||
if padbyte != byte(padlen) {
|
||||
return nil, errors.New("invalid padding")
|
||||
}
|
||||
}
|
||||
|
||||
return data[:len(data)-padlen], nil
|
||||
}
|
||||
|
||||
func unmarshalAttribute(attrs []attribute, attributeType asn1.ObjectIdentifier, out interface{}) error {
|
||||
for _, attr := range attrs {
|
||||
if attr.Type.Equal(attributeType) {
|
||||
_, err := asn1.Unmarshal(attr.Value.Bytes, out)
|
||||
return err
|
||||
}
|
||||
}
|
||||
return errors.New("pkcs7: attribute type not in attributes")
|
||||
}
|
||||
|
||||
// UnmarshalSignedAttribute decodes a single attribute from the signer info
|
||||
func (p7 *PKCS7) UnmarshalSignedAttribute(attributeType asn1.ObjectIdentifier, out interface{}) error {
|
||||
sd, ok := p7.raw.(signedData)
|
||||
if !ok {
|
||||
return errors.New("pkcs7: payload is not signedData content")
|
||||
}
|
||||
if len(sd.SignerInfos) < 1 {
|
||||
return errors.New("pkcs7: payload has no signers")
|
||||
}
|
||||
attributes := sd.SignerInfos[0].AuthenticatedAttributes
|
||||
return unmarshalAttribute(attributes, attributeType, out)
|
||||
}
|
||||
|
||||
// SignedData is an opaque data structure for creating signed data payloads
|
||||
type SignedData struct {
|
||||
sd signedData
|
||||
certs []*x509.Certificate
|
||||
messageDigest []byte
|
||||
}
|
||||
|
||||
// Attribute represents a key value pair attribute. Value must be marshalable byte
|
||||
// `encoding/asn1`
|
||||
type Attribute struct {
|
||||
Type asn1.ObjectIdentifier
|
||||
Value interface{}
|
||||
}
|
||||
|
||||
// SignerInfoConfig are optional values to include when adding a signer
|
||||
type SignerInfoConfig struct {
|
||||
ExtraSignedAttributes []Attribute
|
||||
}
|
||||
|
||||
// NewSignedData initializes a SignedData with content
|
||||
func NewSignedData(data []byte) (*SignedData, error) {
|
||||
content, err := asn1.Marshal(data)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ci := contentInfo{
|
||||
ContentType: oidData,
|
||||
Content: asn1.RawValue{Class: 2, Tag: 0, Bytes: content, IsCompound: true},
|
||||
}
|
||||
digAlg := pkix.AlgorithmIdentifier{
|
||||
Algorithm: oidDigestAlgorithmSHA1,
|
||||
}
|
||||
h := crypto.SHA1.New()
|
||||
h.Write(data)
|
||||
md := h.Sum(nil)
|
||||
sd := signedData{
|
||||
ContentInfo: ci,
|
||||
Version: 1,
|
||||
DigestAlgorithmIdentifiers: []pkix.AlgorithmIdentifier{digAlg},
|
||||
}
|
||||
return &SignedData{sd: sd, messageDigest: md}, nil
|
||||
}
|
||||
|
||||
type attributes struct {
|
||||
types []asn1.ObjectIdentifier
|
||||
values []interface{}
|
||||
}
|
||||
|
||||
// Add adds the attribute, maintaining insertion order
|
||||
func (attrs *attributes) Add(attrType asn1.ObjectIdentifier, value interface{}) {
|
||||
attrs.types = append(attrs.types, attrType)
|
||||
attrs.values = append(attrs.values, value)
|
||||
}
|
||||
|
||||
type sortableAttribute struct {
|
||||
SortKey []byte
|
||||
Attribute attribute
|
||||
}
|
||||
|
||||
type attributeSet []sortableAttribute
|
||||
|
||||
func (sa attributeSet) Len() int {
|
||||
return len(sa)
|
||||
}
|
||||
|
||||
func (sa attributeSet) Less(i, j int) bool {
|
||||
return bytes.Compare(sa[i].SortKey, sa[j].SortKey) < 0
|
||||
}
|
||||
|
||||
func (sa attributeSet) Swap(i, j int) {
|
||||
sa[i], sa[j] = sa[j], sa[i]
|
||||
}
|
||||
|
||||
func (sa attributeSet) Attributes() []attribute {
|
||||
attrs := make([]attribute, len(sa))
|
||||
for i, attr := range sa {
|
||||
attrs[i] = attr.Attribute
|
||||
}
|
||||
return attrs
|
||||
}
|
||||
|
||||
func (attrs *attributes) ForMarshaling() ([]attribute, error) {
|
||||
sortables := make(attributeSet, len(attrs.types))
|
||||
for i := range sortables {
|
||||
attrType := attrs.types[i]
|
||||
attrValue := attrs.values[i]
|
||||
asn1Value, err := asn1.Marshal(attrValue)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr := attribute{
|
||||
Type: attrType,
|
||||
Value: asn1.RawValue{Tag: 17, IsCompound: true, Bytes: asn1Value}, // 17 == SET tag
|
||||
}
|
||||
encoded, err := asn1.Marshal(attr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
sortables[i] = sortableAttribute{
|
||||
SortKey: encoded,
|
||||
Attribute: attr,
|
||||
}
|
||||
}
|
||||
sort.Sort(sortables)
|
||||
return sortables.Attributes(), nil
|
||||
}
|
||||
|
||||
// AddSigner signs attributes about the content and adds certificate to payload
|
||||
func (sd *SignedData) AddSigner(cert *x509.Certificate, pkey crypto.PrivateKey, config SignerInfoConfig) error {
|
||||
attrs := &attributes{}
|
||||
attrs.Add(oidAttributeContentType, sd.sd.ContentInfo.ContentType)
|
||||
attrs.Add(oidAttributeMessageDigest, sd.messageDigest)
|
||||
attrs.Add(oidAttributeSigningTime, time.Now())
|
||||
for _, attr := range config.ExtraSignedAttributes {
|
||||
attrs.Add(attr.Type, attr.Value)
|
||||
}
|
||||
finalAttrs, err := attrs.ForMarshaling()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
signature, err := signAttributes(finalAttrs, pkey, crypto.SHA1)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
ias, err := cert2issuerAndSerial(cert)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
signer := signerInfo{
|
||||
AuthenticatedAttributes: finalAttrs,
|
||||
DigestAlgorithm: pkix.AlgorithmIdentifier{Algorithm: oidDigestAlgorithmSHA1},
|
||||
DigestEncryptionAlgorithm: pkix.AlgorithmIdentifier{Algorithm: oidSignatureSHA1WithRSA},
|
||||
IssuerAndSerialNumber: ias,
|
||||
EncryptedDigest: signature,
|
||||
Version: 1,
|
||||
}
|
||||
// create signature of signed attributes
|
||||
sd.certs = append(sd.certs, cert)
|
||||
sd.sd.SignerInfos = append(sd.sd.SignerInfos, signer)
|
||||
return nil
|
||||
}
|
||||
|
||||
// AddCertificate adds the certificate to the payload. Useful for parent certificates
|
||||
func (sd *SignedData) AddCertificate(cert *x509.Certificate) {
|
||||
sd.certs = append(sd.certs, cert)
|
||||
}
|
||||
|
||||
// Detach removes content from the signed data struct to make it a detached signature.
|
||||
// This must be called right before Finish()
|
||||
func (sd *SignedData) Detach() {
|
||||
sd.sd.ContentInfo = contentInfo{ContentType: oidData}
|
||||
}
|
||||
|
||||
// Finish marshals the content and its signers
|
||||
func (sd *SignedData) Finish() ([]byte, error) {
|
||||
sd.sd.Certificates = marshalCertificates(sd.certs)
|
||||
inner, err := asn1.Marshal(sd.sd)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
outer := contentInfo{
|
||||
ContentType: oidSignedData,
|
||||
Content: asn1.RawValue{Class: 2, Tag: 0, Bytes: inner, IsCompound: true},
|
||||
}
|
||||
return asn1.Marshal(outer)
|
||||
}
|
||||
|
||||
func cert2issuerAndSerial(cert *x509.Certificate) (issuerAndSerial, error) {
|
||||
var ias issuerAndSerial
|
||||
// The issuer RDNSequence has to match exactly the sequence in the certificate
|
||||
// We cannot use cert.Issuer.ToRDNSequence() here since it mangles the sequence
|
||||
ias.IssuerName = asn1.RawValue{FullBytes: cert.RawIssuer}
|
||||
ias.SerialNumber = cert.SerialNumber
|
||||
|
||||
return ias, nil
|
||||
}
|
||||
|
||||
// signs the DER encoded form of the attributes with the private key
|
||||
func signAttributes(attrs []attribute, pkey crypto.PrivateKey, hash crypto.Hash) ([]byte, error) {
|
||||
attrBytes, err := marshalAttributes(attrs)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
h := hash.New()
|
||||
h.Write(attrBytes)
|
||||
hashed := h.Sum(nil)
|
||||
switch priv := pkey.(type) {
|
||||
case *rsa.PrivateKey:
|
||||
return rsa.SignPKCS1v15(rand.Reader, priv, crypto.SHA1, hashed)
|
||||
}
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// concats and wraps the certificates in the RawValue structure
|
||||
func marshalCertificates(certs []*x509.Certificate) rawCertificates {
|
||||
var buf bytes.Buffer
|
||||
for _, cert := range certs {
|
||||
buf.Write(cert.Raw)
|
||||
}
|
||||
rawCerts, _ := marshalCertificateBytes(buf.Bytes())
|
||||
return rawCerts
|
||||
}
|
||||
|
||||
// Even though, the tag & length are stripped out during marshalling the
|
||||
// RawContent, we have to encode it into the RawContent. If its missing,
|
||||
// then `asn1.Marshal()` will strip out the certificate wrapper instead.
|
||||
func marshalCertificateBytes(certs []byte) (rawCertificates, error) {
|
||||
var val = asn1.RawValue{Bytes: certs, Class: 2, Tag: 0, IsCompound: true}
|
||||
b, err := asn1.Marshal(val)
|
||||
if err != nil {
|
||||
return rawCertificates{}, err
|
||||
}
|
||||
return rawCertificates{Raw: b}, nil
|
||||
}
|
||||
|
||||
// DegenerateCertificate creates a signed data structure containing only the
|
||||
// provided certificate or certificate chain.
|
||||
func DegenerateCertificate(cert []byte) ([]byte, error) {
|
||||
rawCert, err := marshalCertificateBytes(cert)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
emptyContent := contentInfo{ContentType: oidData}
|
||||
sd := signedData{
|
||||
Version: 1,
|
||||
ContentInfo: emptyContent,
|
||||
Certificates: rawCert,
|
||||
CRLs: []pkix.CertificateList{},
|
||||
}
|
||||
content, err := asn1.Marshal(sd)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
signedContent := contentInfo{
|
||||
ContentType: oidSignedData,
|
||||
Content: asn1.RawValue{Class: 2, Tag: 0, Bytes: content, IsCompound: true},
|
||||
}
|
||||
return asn1.Marshal(signedContent)
|
||||
}
|
||||
|
||||
const (
|
||||
EncryptionAlgorithmDESCBC = iota
|
||||
EncryptionAlgorithmAES128GCM
|
||||
)
|
||||
|
||||
// ContentEncryptionAlgorithm determines the algorithm used to encrypt the
|
||||
// plaintext message. Change the value of this variable to change which
|
||||
// algorithm is used in the Encrypt() function.
|
||||
var ContentEncryptionAlgorithm = EncryptionAlgorithmDESCBC
|
||||
|
||||
// ErrUnsupportedEncryptionAlgorithm is returned when attempting to encrypt
|
||||
// content with an unsupported algorithm.
|
||||
var ErrUnsupportedEncryptionAlgorithm = errors.New("pkcs7: cannot encrypt content: only DES-CBC and AES-128-GCM supported")
|
||||
|
||||
const nonceSize = 12
|
||||
|
||||
type aesGCMParameters struct {
|
||||
Nonce []byte `asn1:"tag:4"`
|
||||
ICVLen int
|
||||
}
|
||||
|
||||
func encryptAES128GCM(content []byte) ([]byte, *encryptedContentInfo, error) {
|
||||
// Create AES key and nonce
|
||||
key := make([]byte, 16)
|
||||
nonce := make([]byte, nonceSize)
|
||||
|
||||
_, err := rand.Read(key)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
_, err = rand.Read(nonce)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// Encrypt content
|
||||
block, err := aes.NewCipher(key)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
gcm, err := cipher.NewGCM(block)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
ciphertext := gcm.Seal(nil, nonce, content, nil)
|
||||
|
||||
// Prepare ASN.1 Encrypted Content Info
|
||||
paramSeq := aesGCMParameters{
|
||||
Nonce: nonce,
|
||||
ICVLen: gcm.Overhead(),
|
||||
}
|
||||
|
||||
paramBytes, err := asn1.Marshal(paramSeq)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
eci := encryptedContentInfo{
|
||||
ContentType: oidData,
|
||||
ContentEncryptionAlgorithm: pkix.AlgorithmIdentifier{
|
||||
Algorithm: oidEncryptionAlgorithmAES128GCM,
|
||||
Parameters: asn1.RawValue{
|
||||
Tag: asn1.TagSequence,
|
||||
Bytes: paramBytes,
|
||||
},
|
||||
},
|
||||
EncryptedContent: marshalEncryptedContent(ciphertext),
|
||||
}
|
||||
|
||||
return key, &eci, nil
|
||||
}
|
||||
|
||||
func encryptDESCBC(content []byte) ([]byte, *encryptedContentInfo, error) {
|
||||
// Create DES key & CBC IV
|
||||
key := make([]byte, 8)
|
||||
iv := make([]byte, des.BlockSize)
|
||||
_, err := rand.Read(key)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
_, err = rand.Read(iv)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// Encrypt padded content
|
||||
block, err := des.NewCipher(key)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
mode := cipher.NewCBCEncrypter(block, iv)
|
||||
plaintext, err := pad(content, mode.BlockSize())
|
||||
cyphertext := make([]byte, len(plaintext))
|
||||
mode.CryptBlocks(cyphertext, plaintext)
|
||||
|
||||
// Prepare ASN.1 Encrypted Content Info
|
||||
eci := encryptedContentInfo{
|
||||
ContentType: oidData,
|
||||
ContentEncryptionAlgorithm: pkix.AlgorithmIdentifier{
|
||||
Algorithm: oidEncryptionAlgorithmDESCBC,
|
||||
Parameters: asn1.RawValue{Tag: 4, Bytes: iv},
|
||||
},
|
||||
EncryptedContent: marshalEncryptedContent(cyphertext),
|
||||
}
|
||||
|
||||
return key, &eci, nil
|
||||
}
|
||||
|
||||
// Encrypt creates and returns an envelope data PKCS7 structure with encrypted
|
||||
// recipient keys for each recipient public key.
|
||||
//
|
||||
// The algorithm used to perform encryption is determined by the current value
|
||||
// of the global ContentEncryptionAlgorithm package variable. By default, the
|
||||
// value is EncryptionAlgorithmDESCBC. To use a different algorithm, change the
|
||||
// value before calling Encrypt(). For example:
|
||||
//
|
||||
// ContentEncryptionAlgorithm = EncryptionAlgorithmAES128GCM
|
||||
//
|
||||
// TODO(fullsailor): Add support for encrypting content with other algorithms
|
||||
func Encrypt(content []byte, recipients []*x509.Certificate) ([]byte, error) {
|
||||
var eci *encryptedContentInfo
|
||||
var key []byte
|
||||
var err error
|
||||
|
||||
// Apply chosen symmetric encryption method
|
||||
switch ContentEncryptionAlgorithm {
|
||||
case EncryptionAlgorithmDESCBC:
|
||||
key, eci, err = encryptDESCBC(content)
|
||||
|
||||
case EncryptionAlgorithmAES128GCM:
|
||||
key, eci, err = encryptAES128GCM(content)
|
||||
|
||||
default:
|
||||
return nil, ErrUnsupportedEncryptionAlgorithm
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Prepare each recipient's encrypted cipher key
|
||||
recipientInfos := make([]recipientInfo, len(recipients))
|
||||
for i, recipient := range recipients {
|
||||
encrypted, err := encryptKey(key, recipient)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ias, err := cert2issuerAndSerial(recipient)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
info := recipientInfo{
|
||||
Version: 0,
|
||||
IssuerAndSerialNumber: ias,
|
||||
KeyEncryptionAlgorithm: pkix.AlgorithmIdentifier{
|
||||
Algorithm: oidEncryptionAlgorithmRSA,
|
||||
},
|
||||
EncryptedKey: encrypted,
|
||||
}
|
||||
recipientInfos[i] = info
|
||||
}
|
||||
|
||||
// Prepare envelope content
|
||||
envelope := envelopedData{
|
||||
EncryptedContentInfo: *eci,
|
||||
Version: 0,
|
||||
RecipientInfos: recipientInfos,
|
||||
}
|
||||
innerContent, err := asn1.Marshal(envelope)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Prepare outer payload structure
|
||||
wrapper := contentInfo{
|
||||
ContentType: oidEnvelopedData,
|
||||
Content: asn1.RawValue{Class: 2, Tag: 0, IsCompound: true, Bytes: innerContent},
|
||||
}
|
||||
|
||||
return asn1.Marshal(wrapper)
|
||||
}
|
||||
|
||||
func marshalEncryptedContent(content []byte) asn1.RawValue {
|
||||
asn1Content, _ := asn1.Marshal(content)
|
||||
return asn1.RawValue{Tag: 0, Class: 2, Bytes: asn1Content, IsCompound: true}
|
||||
}
|
||||
|
||||
func encryptKey(key []byte, recipient *x509.Certificate) ([]byte, error) {
|
||||
if pub := recipient.PublicKey.(*rsa.PublicKey); pub != nil {
|
||||
return rsa.EncryptPKCS1v15(rand.Reader, pub, key)
|
||||
}
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
133
vendor/github.com/fullsailor/pkcs7/x509.go
generated
vendored
Normal file
133
vendor/github.com/fullsailor/pkcs7/x509.go
generated
vendored
Normal file
@ -0,0 +1,133 @@
|
||||
// Copyright 2009 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the go/golang LICENSE file.
|
||||
|
||||
package pkcs7
|
||||
|
||||
// These are private constants and functions from the crypto/x509 package that
|
||||
// are useful when dealing with signatures verified by x509 certificates
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/x509"
|
||||
"crypto/x509/pkix"
|
||||
"encoding/asn1"
|
||||
)
|
||||
|
||||
var (
|
||||
oidSignatureMD2WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2}
|
||||
oidSignatureMD5WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4}
|
||||
oidSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}
|
||||
oidSignatureSHA256WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11}
|
||||
oidSignatureSHA384WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12}
|
||||
oidSignatureSHA512WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13}
|
||||
oidSignatureRSAPSS = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 10}
|
||||
oidSignatureDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3}
|
||||
oidSignatureDSAWithSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 3, 2}
|
||||
oidSignatureECDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1}
|
||||
oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2}
|
||||
oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3}
|
||||
oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4}
|
||||
|
||||
oidSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 1}
|
||||
oidSHA384 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 2}
|
||||
oidSHA512 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 3}
|
||||
|
||||
oidMGF1 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 8}
|
||||
|
||||
// oidISOSignatureSHA1WithRSA means the same as oidSignatureSHA1WithRSA
|
||||
// but it's specified by ISO. Microsoft's makecert.exe has been known
|
||||
// to produce certificates with this OID.
|
||||
oidISOSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 3, 14, 3, 2, 29}
|
||||
)
|
||||
|
||||
var signatureAlgorithmDetails = []struct {
|
||||
algo x509.SignatureAlgorithm
|
||||
name string
|
||||
oid asn1.ObjectIdentifier
|
||||
pubKeyAlgo x509.PublicKeyAlgorithm
|
||||
hash crypto.Hash
|
||||
}{
|
||||
{x509.MD2WithRSA, "MD2-RSA", oidSignatureMD2WithRSA, x509.RSA, crypto.Hash(0) /* no value for MD2 */},
|
||||
{x509.MD5WithRSA, "MD5-RSA", oidSignatureMD5WithRSA, x509.RSA, crypto.MD5},
|
||||
{x509.SHA1WithRSA, "SHA1-RSA", oidSignatureSHA1WithRSA, x509.RSA, crypto.SHA1},
|
||||
{x509.SHA1WithRSA, "SHA1-RSA", oidISOSignatureSHA1WithRSA, x509.RSA, crypto.SHA1},
|
||||
{x509.SHA256WithRSA, "SHA256-RSA", oidSignatureSHA256WithRSA, x509.RSA, crypto.SHA256},
|
||||
{x509.SHA384WithRSA, "SHA384-RSA", oidSignatureSHA384WithRSA, x509.RSA, crypto.SHA384},
|
||||
{x509.SHA512WithRSA, "SHA512-RSA", oidSignatureSHA512WithRSA, x509.RSA, crypto.SHA512},
|
||||
{x509.SHA256WithRSAPSS, "SHA256-RSAPSS", oidSignatureRSAPSS, x509.RSA, crypto.SHA256},
|
||||
{x509.SHA384WithRSAPSS, "SHA384-RSAPSS", oidSignatureRSAPSS, x509.RSA, crypto.SHA384},
|
||||
{x509.SHA512WithRSAPSS, "SHA512-RSAPSS", oidSignatureRSAPSS, x509.RSA, crypto.SHA512},
|
||||
{x509.DSAWithSHA1, "DSA-SHA1", oidSignatureDSAWithSHA1, x509.DSA, crypto.SHA1},
|
||||
{x509.DSAWithSHA256, "DSA-SHA256", oidSignatureDSAWithSHA256, x509.DSA, crypto.SHA256},
|
||||
{x509.ECDSAWithSHA1, "ECDSA-SHA1", oidSignatureECDSAWithSHA1, x509.ECDSA, crypto.SHA1},
|
||||
{x509.ECDSAWithSHA256, "ECDSA-SHA256", oidSignatureECDSAWithSHA256, x509.ECDSA, crypto.SHA256},
|
||||
{x509.ECDSAWithSHA384, "ECDSA-SHA384", oidSignatureECDSAWithSHA384, x509.ECDSA, crypto.SHA384},
|
||||
{x509.ECDSAWithSHA512, "ECDSA-SHA512", oidSignatureECDSAWithSHA512, x509.ECDSA, crypto.SHA512},
|
||||
}
|
||||
|
||||
// pssParameters reflects the parameters in an AlgorithmIdentifier that
|
||||
// specifies RSA PSS. See https://tools.ietf.org/html/rfc3447#appendix-A.2.3
|
||||
type pssParameters struct {
|
||||
// The following three fields are not marked as
|
||||
// optional because the default values specify SHA-1,
|
||||
// which is no longer suitable for use in signatures.
|
||||
Hash pkix.AlgorithmIdentifier `asn1:"explicit,tag:0"`
|
||||
MGF pkix.AlgorithmIdentifier `asn1:"explicit,tag:1"`
|
||||
SaltLength int `asn1:"explicit,tag:2"`
|
||||
TrailerField int `asn1:"optional,explicit,tag:3,default:1"`
|
||||
}
|
||||
|
||||
// asn1.NullBytes is not available prior to Go 1.9
|
||||
var nullBytes = []byte{5, 0}
|
||||
|
||||
func getSignatureAlgorithmFromAI(ai pkix.AlgorithmIdentifier) x509.SignatureAlgorithm {
|
||||
if !ai.Algorithm.Equal(oidSignatureRSAPSS) {
|
||||
for _, details := range signatureAlgorithmDetails {
|
||||
if ai.Algorithm.Equal(details.oid) {
|
||||
return details.algo
|
||||
}
|
||||
}
|
||||
return x509.UnknownSignatureAlgorithm
|
||||
}
|
||||
|
||||
// RSA PSS is special because it encodes important parameters
|
||||
// in the Parameters.
|
||||
|
||||
var params pssParameters
|
||||
if _, err := asn1.Unmarshal(ai.Parameters.FullBytes, ¶ms); err != nil {
|
||||
return x509.UnknownSignatureAlgorithm
|
||||
}
|
||||
|
||||
var mgf1HashFunc pkix.AlgorithmIdentifier
|
||||
if _, err := asn1.Unmarshal(params.MGF.Parameters.FullBytes, &mgf1HashFunc); err != nil {
|
||||
return x509.UnknownSignatureAlgorithm
|
||||
}
|
||||
|
||||
// PSS is greatly overburdened with options. This code forces
|
||||
// them into three buckets by requiring that the MGF1 hash
|
||||
// function always match the message hash function (as
|
||||
// recommended in
|
||||
// https://tools.ietf.org/html/rfc3447#section-8.1), that the
|
||||
// salt length matches the hash length, and that the trailer
|
||||
// field has the default value.
|
||||
if !bytes.Equal(params.Hash.Parameters.FullBytes, nullBytes) ||
|
||||
!params.MGF.Algorithm.Equal(oidMGF1) ||
|
||||
!mgf1HashFunc.Algorithm.Equal(params.Hash.Algorithm) ||
|
||||
!bytes.Equal(mgf1HashFunc.Parameters.FullBytes, nullBytes) ||
|
||||
params.TrailerField != 1 {
|
||||
return x509.UnknownSignatureAlgorithm
|
||||
}
|
||||
|
||||
switch {
|
||||
case params.Hash.Algorithm.Equal(oidSHA256) && params.SaltLength == 32:
|
||||
return x509.SHA256WithRSAPSS
|
||||
case params.Hash.Algorithm.Equal(oidSHA384) && params.SaltLength == 48:
|
||||
return x509.SHA384WithRSAPSS
|
||||
case params.Hash.Algorithm.Equal(oidSHA512) && params.SaltLength == 64:
|
||||
return x509.SHA512WithRSAPSS
|
||||
}
|
||||
|
||||
return x509.UnknownSignatureAlgorithm
|
||||
}
|
||||
533
vendor/golang.org/x/crypto/cast5/cast5.go
generated
vendored
Normal file
533
vendor/golang.org/x/crypto/cast5/cast5.go
generated
vendored
Normal file
@ -0,0 +1,533 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package cast5 implements CAST5, as defined in RFC 2144.
|
||||
//
|
||||
// CAST5 is a legacy cipher and its short block size makes it vulnerable to
|
||||
// birthday bound attacks (see https://sweet32.info). It should only be used
|
||||
// where compatibility with legacy systems, not security, is the goal.
|
||||
//
|
||||
// Deprecated: any new system should use AES (from crypto/aes, if necessary in
|
||||
// an AEAD mode like crypto/cipher.NewGCM) or XChaCha20-Poly1305 (from
|
||||
// golang.org/x/crypto/chacha20poly1305).
|
||||
package cast5 // import "golang.org/x/crypto/cast5"
|
||||
|
||||
import "errors"
|
||||
|
||||
const BlockSize = 8
|
||||
const KeySize = 16
|
||||
|
||||
type Cipher struct {
|
||||
masking [16]uint32
|
||||
rotate [16]uint8
|
||||
}
|
||||
|
||||
func NewCipher(key []byte) (c *Cipher, err error) {
|
||||
if len(key) != KeySize {
|
||||
return nil, errors.New("CAST5: keys must be 16 bytes")
|
||||
}
|
||||
|
||||
c = new(Cipher)
|
||||
c.keySchedule(key)
|
||||
return
|
||||
}
|
||||
|
||||
func (c *Cipher) BlockSize() int {
|
||||
return BlockSize
|
||||
}
|
||||
|
||||
func (c *Cipher) Encrypt(dst, src []byte) {
|
||||
l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
|
||||
r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
|
||||
|
||||
l, r = r, l^f1(r, c.masking[0], c.rotate[0])
|
||||
l, r = r, l^f2(r, c.masking[1], c.rotate[1])
|
||||
l, r = r, l^f3(r, c.masking[2], c.rotate[2])
|
||||
l, r = r, l^f1(r, c.masking[3], c.rotate[3])
|
||||
|
||||
l, r = r, l^f2(r, c.masking[4], c.rotate[4])
|
||||
l, r = r, l^f3(r, c.masking[5], c.rotate[5])
|
||||
l, r = r, l^f1(r, c.masking[6], c.rotate[6])
|
||||
l, r = r, l^f2(r, c.masking[7], c.rotate[7])
|
||||
|
||||
l, r = r, l^f3(r, c.masking[8], c.rotate[8])
|
||||
l, r = r, l^f1(r, c.masking[9], c.rotate[9])
|
||||
l, r = r, l^f2(r, c.masking[10], c.rotate[10])
|
||||
l, r = r, l^f3(r, c.masking[11], c.rotate[11])
|
||||
|
||||
l, r = r, l^f1(r, c.masking[12], c.rotate[12])
|
||||
l, r = r, l^f2(r, c.masking[13], c.rotate[13])
|
||||
l, r = r, l^f3(r, c.masking[14], c.rotate[14])
|
||||
l, r = r, l^f1(r, c.masking[15], c.rotate[15])
|
||||
|
||||
dst[0] = uint8(r >> 24)
|
||||
dst[1] = uint8(r >> 16)
|
||||
dst[2] = uint8(r >> 8)
|
||||
dst[3] = uint8(r)
|
||||
dst[4] = uint8(l >> 24)
|
||||
dst[5] = uint8(l >> 16)
|
||||
dst[6] = uint8(l >> 8)
|
||||
dst[7] = uint8(l)
|
||||
}
|
||||
|
||||
func (c *Cipher) Decrypt(dst, src []byte) {
|
||||
l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
|
||||
r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
|
||||
|
||||
l, r = r, l^f1(r, c.masking[15], c.rotate[15])
|
||||
l, r = r, l^f3(r, c.masking[14], c.rotate[14])
|
||||
l, r = r, l^f2(r, c.masking[13], c.rotate[13])
|
||||
l, r = r, l^f1(r, c.masking[12], c.rotate[12])
|
||||
|
||||
l, r = r, l^f3(r, c.masking[11], c.rotate[11])
|
||||
l, r = r, l^f2(r, c.masking[10], c.rotate[10])
|
||||
l, r = r, l^f1(r, c.masking[9], c.rotate[9])
|
||||
l, r = r, l^f3(r, c.masking[8], c.rotate[8])
|
||||
|
||||
l, r = r, l^f2(r, c.masking[7], c.rotate[7])
|
||||
l, r = r, l^f1(r, c.masking[6], c.rotate[6])
|
||||
l, r = r, l^f3(r, c.masking[5], c.rotate[5])
|
||||
l, r = r, l^f2(r, c.masking[4], c.rotate[4])
|
||||
|
||||
l, r = r, l^f1(r, c.masking[3], c.rotate[3])
|
||||
l, r = r, l^f3(r, c.masking[2], c.rotate[2])
|
||||
l, r = r, l^f2(r, c.masking[1], c.rotate[1])
|
||||
l, r = r, l^f1(r, c.masking[0], c.rotate[0])
|
||||
|
||||
dst[0] = uint8(r >> 24)
|
||||
dst[1] = uint8(r >> 16)
|
||||
dst[2] = uint8(r >> 8)
|
||||
dst[3] = uint8(r)
|
||||
dst[4] = uint8(l >> 24)
|
||||
dst[5] = uint8(l >> 16)
|
||||
dst[6] = uint8(l >> 8)
|
||||
dst[7] = uint8(l)
|
||||
}
|
||||
|
||||
type keyScheduleA [4][7]uint8
|
||||
type keyScheduleB [4][5]uint8
|
||||
|
||||
// keyScheduleRound contains the magic values for a round of the key schedule.
|
||||
// The keyScheduleA deals with the lines like:
|
||||
// z0z1z2z3 = x0x1x2x3 ^ S5[xD] ^ S6[xF] ^ S7[xC] ^ S8[xE] ^ S7[x8]
|
||||
// Conceptually, both x and z are in the same array, x first. The first
|
||||
// element describes which word of this array gets written to and the
|
||||
// second, which word gets read. So, for the line above, it's "4, 0", because
|
||||
// it's writing to the first word of z, which, being after x, is word 4, and
|
||||
// reading from the first word of x: word 0.
|
||||
//
|
||||
// Next are the indexes into the S-boxes. Now the array is treated as bytes. So
|
||||
// "xD" is 0xd. The first byte of z is written as "16 + 0", just to be clear
|
||||
// that it's z that we're indexing.
|
||||
//
|
||||
// keyScheduleB deals with lines like:
|
||||
// K1 = S5[z8] ^ S6[z9] ^ S7[z7] ^ S8[z6] ^ S5[z2]
|
||||
// "K1" is ignored because key words are always written in order. So the five
|
||||
// elements are the S-box indexes. They use the same form as in keyScheduleA,
|
||||
// above.
|
||||
|
||||
type keyScheduleRound struct{}
|
||||
type keySchedule []keyScheduleRound
|
||||
|
||||
var schedule = []struct {
|
||||
a keyScheduleA
|
||||
b keyScheduleB
|
||||
}{
|
||||
{
|
||||
keyScheduleA{
|
||||
{4, 0, 0xd, 0xf, 0xc, 0xe, 0x8},
|
||||
{5, 2, 16 + 0, 16 + 2, 16 + 1, 16 + 3, 0xa},
|
||||
{6, 3, 16 + 7, 16 + 6, 16 + 5, 16 + 4, 9},
|
||||
{7, 1, 16 + 0xa, 16 + 9, 16 + 0xb, 16 + 8, 0xb},
|
||||
},
|
||||
keyScheduleB{
|
||||
{16 + 8, 16 + 9, 16 + 7, 16 + 6, 16 + 2},
|
||||
{16 + 0xa, 16 + 0xb, 16 + 5, 16 + 4, 16 + 6},
|
||||
{16 + 0xc, 16 + 0xd, 16 + 3, 16 + 2, 16 + 9},
|
||||
{16 + 0xe, 16 + 0xf, 16 + 1, 16 + 0, 16 + 0xc},
|
||||
},
|
||||
},
|
||||
{
|
||||
keyScheduleA{
|
||||
{0, 6, 16 + 5, 16 + 7, 16 + 4, 16 + 6, 16 + 0},
|
||||
{1, 4, 0, 2, 1, 3, 16 + 2},
|
||||
{2, 5, 7, 6, 5, 4, 16 + 1},
|
||||
{3, 7, 0xa, 9, 0xb, 8, 16 + 3},
|
||||
},
|
||||
keyScheduleB{
|
||||
{3, 2, 0xc, 0xd, 8},
|
||||
{1, 0, 0xe, 0xf, 0xd},
|
||||
{7, 6, 8, 9, 3},
|
||||
{5, 4, 0xa, 0xb, 7},
|
||||
},
|
||||
},
|
||||
{
|
||||
keyScheduleA{
|
||||
{4, 0, 0xd, 0xf, 0xc, 0xe, 8},
|
||||
{5, 2, 16 + 0, 16 + 2, 16 + 1, 16 + 3, 0xa},
|
||||
{6, 3, 16 + 7, 16 + 6, 16 + 5, 16 + 4, 9},
|
||||
{7, 1, 16 + 0xa, 16 + 9, 16 + 0xb, 16 + 8, 0xb},
|
||||
},
|
||||
keyScheduleB{
|
||||
{16 + 3, 16 + 2, 16 + 0xc, 16 + 0xd, 16 + 9},
|
||||
{16 + 1, 16 + 0, 16 + 0xe, 16 + 0xf, 16 + 0xc},
|
||||
{16 + 7, 16 + 6, 16 + 8, 16 + 9, 16 + 2},
|
||||
{16 + 5, 16 + 4, 16 + 0xa, 16 + 0xb, 16 + 6},
|
||||
},
|
||||
},
|
||||
{
|
||||
keyScheduleA{
|
||||
{0, 6, 16 + 5, 16 + 7, 16 + 4, 16 + 6, 16 + 0},
|
||||
{1, 4, 0, 2, 1, 3, 16 + 2},
|
||||
{2, 5, 7, 6, 5, 4, 16 + 1},
|
||||
{3, 7, 0xa, 9, 0xb, 8, 16 + 3},
|
||||
},
|
||||
keyScheduleB{
|
||||
{8, 9, 7, 6, 3},
|
||||
{0xa, 0xb, 5, 4, 7},
|
||||
{0xc, 0xd, 3, 2, 8},
|
||||
{0xe, 0xf, 1, 0, 0xd},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
func (c *Cipher) keySchedule(in []byte) {
|
||||
var t [8]uint32
|
||||
var k [32]uint32
|
||||
|
||||
for i := 0; i < 4; i++ {
|
||||
j := i * 4
|
||||
t[i] = uint32(in[j])<<24 | uint32(in[j+1])<<16 | uint32(in[j+2])<<8 | uint32(in[j+3])
|
||||
}
|
||||
|
||||
x := []byte{6, 7, 4, 5}
|
||||
ki := 0
|
||||
|
||||
for half := 0; half < 2; half++ {
|
||||
for _, round := range schedule {
|
||||
for j := 0; j < 4; j++ {
|
||||
var a [7]uint8
|
||||
copy(a[:], round.a[j][:])
|
||||
w := t[a[1]]
|
||||
w ^= sBox[4][(t[a[2]>>2]>>(24-8*(a[2]&3)))&0xff]
|
||||
w ^= sBox[5][(t[a[3]>>2]>>(24-8*(a[3]&3)))&0xff]
|
||||
w ^= sBox[6][(t[a[4]>>2]>>(24-8*(a[4]&3)))&0xff]
|
||||
w ^= sBox[7][(t[a[5]>>2]>>(24-8*(a[5]&3)))&0xff]
|
||||
w ^= sBox[x[j]][(t[a[6]>>2]>>(24-8*(a[6]&3)))&0xff]
|
||||
t[a[0]] = w
|
||||
}
|
||||
|
||||
for j := 0; j < 4; j++ {
|
||||
var b [5]uint8
|
||||
copy(b[:], round.b[j][:])
|
||||
w := sBox[4][(t[b[0]>>2]>>(24-8*(b[0]&3)))&0xff]
|
||||
w ^= sBox[5][(t[b[1]>>2]>>(24-8*(b[1]&3)))&0xff]
|
||||
w ^= sBox[6][(t[b[2]>>2]>>(24-8*(b[2]&3)))&0xff]
|
||||
w ^= sBox[7][(t[b[3]>>2]>>(24-8*(b[3]&3)))&0xff]
|
||||
w ^= sBox[4+j][(t[b[4]>>2]>>(24-8*(b[4]&3)))&0xff]
|
||||
k[ki] = w
|
||||
ki++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for i := 0; i < 16; i++ {
|
||||
c.masking[i] = k[i]
|
||||
c.rotate[i] = uint8(k[16+i] & 0x1f)
|
||||
}
|
||||
}
|
||||
|
||||
// These are the three 'f' functions. See RFC 2144, section 2.2.
|
||||
func f1(d, m uint32, r uint8) uint32 {
|
||||
t := m + d
|
||||
I := (t << r) | (t >> (32 - r))
|
||||
return ((sBox[0][I>>24] ^ sBox[1][(I>>16)&0xff]) - sBox[2][(I>>8)&0xff]) + sBox[3][I&0xff]
|
||||
}
|
||||
|
||||
func f2(d, m uint32, r uint8) uint32 {
|
||||
t := m ^ d
|
||||
I := (t << r) | (t >> (32 - r))
|
||||
return ((sBox[0][I>>24] - sBox[1][(I>>16)&0xff]) + sBox[2][(I>>8)&0xff]) ^ sBox[3][I&0xff]
|
||||
}
|
||||
|
||||
func f3(d, m uint32, r uint8) uint32 {
|
||||
t := m - d
|
||||
I := (t << r) | (t >> (32 - r))
|
||||
return ((sBox[0][I>>24] + sBox[1][(I>>16)&0xff]) ^ sBox[2][(I>>8)&0xff]) - sBox[3][I&0xff]
|
||||
}
|
||||
|
||||
var sBox = [8][256]uint32{
|
||||
{
|
||||
0x30fb40d4, 0x9fa0ff0b, 0x6beccd2f, 0x3f258c7a, 0x1e213f2f, 0x9c004dd3, 0x6003e540, 0xcf9fc949,
|
||||
0xbfd4af27, 0x88bbbdb5, 0xe2034090, 0x98d09675, 0x6e63a0e0, 0x15c361d2, 0xc2e7661d, 0x22d4ff8e,
|
||||
0x28683b6f, 0xc07fd059, 0xff2379c8, 0x775f50e2, 0x43c340d3, 0xdf2f8656, 0x887ca41a, 0xa2d2bd2d,
|
||||
0xa1c9e0d6, 0x346c4819, 0x61b76d87, 0x22540f2f, 0x2abe32e1, 0xaa54166b, 0x22568e3a, 0xa2d341d0,
|
||||
0x66db40c8, 0xa784392f, 0x004dff2f, 0x2db9d2de, 0x97943fac, 0x4a97c1d8, 0x527644b7, 0xb5f437a7,
|
||||
0xb82cbaef, 0xd751d159, 0x6ff7f0ed, 0x5a097a1f, 0x827b68d0, 0x90ecf52e, 0x22b0c054, 0xbc8e5935,
|
||||
0x4b6d2f7f, 0x50bb64a2, 0xd2664910, 0xbee5812d, 0xb7332290, 0xe93b159f, 0xb48ee411, 0x4bff345d,
|
||||
0xfd45c240, 0xad31973f, 0xc4f6d02e, 0x55fc8165, 0xd5b1caad, 0xa1ac2dae, 0xa2d4b76d, 0xc19b0c50,
|
||||
0x882240f2, 0x0c6e4f38, 0xa4e4bfd7, 0x4f5ba272, 0x564c1d2f, 0xc59c5319, 0xb949e354, 0xb04669fe,
|
||||
0xb1b6ab8a, 0xc71358dd, 0x6385c545, 0x110f935d, 0x57538ad5, 0x6a390493, 0xe63d37e0, 0x2a54f6b3,
|
||||
0x3a787d5f, 0x6276a0b5, 0x19a6fcdf, 0x7a42206a, 0x29f9d4d5, 0xf61b1891, 0xbb72275e, 0xaa508167,
|
||||
0x38901091, 0xc6b505eb, 0x84c7cb8c, 0x2ad75a0f, 0x874a1427, 0xa2d1936b, 0x2ad286af, 0xaa56d291,
|
||||
0xd7894360, 0x425c750d, 0x93b39e26, 0x187184c9, 0x6c00b32d, 0x73e2bb14, 0xa0bebc3c, 0x54623779,
|
||||
0x64459eab, 0x3f328b82, 0x7718cf82, 0x59a2cea6, 0x04ee002e, 0x89fe78e6, 0x3fab0950, 0x325ff6c2,
|
||||
0x81383f05, 0x6963c5c8, 0x76cb5ad6, 0xd49974c9, 0xca180dcf, 0x380782d5, 0xc7fa5cf6, 0x8ac31511,
|
||||
0x35e79e13, 0x47da91d0, 0xf40f9086, 0xa7e2419e, 0x31366241, 0x051ef495, 0xaa573b04, 0x4a805d8d,
|
||||
0x548300d0, 0x00322a3c, 0xbf64cddf, 0xba57a68e, 0x75c6372b, 0x50afd341, 0xa7c13275, 0x915a0bf5,
|
||||
0x6b54bfab, 0x2b0b1426, 0xab4cc9d7, 0x449ccd82, 0xf7fbf265, 0xab85c5f3, 0x1b55db94, 0xaad4e324,
|
||||
0xcfa4bd3f, 0x2deaa3e2, 0x9e204d02, 0xc8bd25ac, 0xeadf55b3, 0xd5bd9e98, 0xe31231b2, 0x2ad5ad6c,
|
||||
0x954329de, 0xadbe4528, 0xd8710f69, 0xaa51c90f, 0xaa786bf6, 0x22513f1e, 0xaa51a79b, 0x2ad344cc,
|
||||
0x7b5a41f0, 0xd37cfbad, 0x1b069505, 0x41ece491, 0xb4c332e6, 0x032268d4, 0xc9600acc, 0xce387e6d,
|
||||
0xbf6bb16c, 0x6a70fb78, 0x0d03d9c9, 0xd4df39de, 0xe01063da, 0x4736f464, 0x5ad328d8, 0xb347cc96,
|
||||
0x75bb0fc3, 0x98511bfb, 0x4ffbcc35, 0xb58bcf6a, 0xe11f0abc, 0xbfc5fe4a, 0xa70aec10, 0xac39570a,
|
||||
0x3f04442f, 0x6188b153, 0xe0397a2e, 0x5727cb79, 0x9ceb418f, 0x1cacd68d, 0x2ad37c96, 0x0175cb9d,
|
||||
0xc69dff09, 0xc75b65f0, 0xd9db40d8, 0xec0e7779, 0x4744ead4, 0xb11c3274, 0xdd24cb9e, 0x7e1c54bd,
|
||||
0xf01144f9, 0xd2240eb1, 0x9675b3fd, 0xa3ac3755, 0xd47c27af, 0x51c85f4d, 0x56907596, 0xa5bb15e6,
|
||||
0x580304f0, 0xca042cf1, 0x011a37ea, 0x8dbfaadb, 0x35ba3e4a, 0x3526ffa0, 0xc37b4d09, 0xbc306ed9,
|
||||
0x98a52666, 0x5648f725, 0xff5e569d, 0x0ced63d0, 0x7c63b2cf, 0x700b45e1, 0xd5ea50f1, 0x85a92872,
|
||||
0xaf1fbda7, 0xd4234870, 0xa7870bf3, 0x2d3b4d79, 0x42e04198, 0x0cd0ede7, 0x26470db8, 0xf881814c,
|
||||
0x474d6ad7, 0x7c0c5e5c, 0xd1231959, 0x381b7298, 0xf5d2f4db, 0xab838653, 0x6e2f1e23, 0x83719c9e,
|
||||
0xbd91e046, 0x9a56456e, 0xdc39200c, 0x20c8c571, 0x962bda1c, 0xe1e696ff, 0xb141ab08, 0x7cca89b9,
|
||||
0x1a69e783, 0x02cc4843, 0xa2f7c579, 0x429ef47d, 0x427b169c, 0x5ac9f049, 0xdd8f0f00, 0x5c8165bf,
|
||||
},
|
||||
{
|
||||
0x1f201094, 0xef0ba75b, 0x69e3cf7e, 0x393f4380, 0xfe61cf7a, 0xeec5207a, 0x55889c94, 0x72fc0651,
|
||||
0xada7ef79, 0x4e1d7235, 0xd55a63ce, 0xde0436ba, 0x99c430ef, 0x5f0c0794, 0x18dcdb7d, 0xa1d6eff3,
|
||||
0xa0b52f7b, 0x59e83605, 0xee15b094, 0xe9ffd909, 0xdc440086, 0xef944459, 0xba83ccb3, 0xe0c3cdfb,
|
||||
0xd1da4181, 0x3b092ab1, 0xf997f1c1, 0xa5e6cf7b, 0x01420ddb, 0xe4e7ef5b, 0x25a1ff41, 0xe180f806,
|
||||
0x1fc41080, 0x179bee7a, 0xd37ac6a9, 0xfe5830a4, 0x98de8b7f, 0x77e83f4e, 0x79929269, 0x24fa9f7b,
|
||||
0xe113c85b, 0xacc40083, 0xd7503525, 0xf7ea615f, 0x62143154, 0x0d554b63, 0x5d681121, 0xc866c359,
|
||||
0x3d63cf73, 0xcee234c0, 0xd4d87e87, 0x5c672b21, 0x071f6181, 0x39f7627f, 0x361e3084, 0xe4eb573b,
|
||||
0x602f64a4, 0xd63acd9c, 0x1bbc4635, 0x9e81032d, 0x2701f50c, 0x99847ab4, 0xa0e3df79, 0xba6cf38c,
|
||||
0x10843094, 0x2537a95e, 0xf46f6ffe, 0xa1ff3b1f, 0x208cfb6a, 0x8f458c74, 0xd9e0a227, 0x4ec73a34,
|
||||
0xfc884f69, 0x3e4de8df, 0xef0e0088, 0x3559648d, 0x8a45388c, 0x1d804366, 0x721d9bfd, 0xa58684bb,
|
||||
0xe8256333, 0x844e8212, 0x128d8098, 0xfed33fb4, 0xce280ae1, 0x27e19ba5, 0xd5a6c252, 0xe49754bd,
|
||||
0xc5d655dd, 0xeb667064, 0x77840b4d, 0xa1b6a801, 0x84db26a9, 0xe0b56714, 0x21f043b7, 0xe5d05860,
|
||||
0x54f03084, 0x066ff472, 0xa31aa153, 0xdadc4755, 0xb5625dbf, 0x68561be6, 0x83ca6b94, 0x2d6ed23b,
|
||||
0xeccf01db, 0xa6d3d0ba, 0xb6803d5c, 0xaf77a709, 0x33b4a34c, 0x397bc8d6, 0x5ee22b95, 0x5f0e5304,
|
||||
0x81ed6f61, 0x20e74364, 0xb45e1378, 0xde18639b, 0x881ca122, 0xb96726d1, 0x8049a7e8, 0x22b7da7b,
|
||||
0x5e552d25, 0x5272d237, 0x79d2951c, 0xc60d894c, 0x488cb402, 0x1ba4fe5b, 0xa4b09f6b, 0x1ca815cf,
|
||||
0xa20c3005, 0x8871df63, 0xb9de2fcb, 0x0cc6c9e9, 0x0beeff53, 0xe3214517, 0xb4542835, 0x9f63293c,
|
||||
0xee41e729, 0x6e1d2d7c, 0x50045286, 0x1e6685f3, 0xf33401c6, 0x30a22c95, 0x31a70850, 0x60930f13,
|
||||
0x73f98417, 0xa1269859, 0xec645c44, 0x52c877a9, 0xcdff33a6, 0xa02b1741, 0x7cbad9a2, 0x2180036f,
|
||||
0x50d99c08, 0xcb3f4861, 0xc26bd765, 0x64a3f6ab, 0x80342676, 0x25a75e7b, 0xe4e6d1fc, 0x20c710e6,
|
||||
0xcdf0b680, 0x17844d3b, 0x31eef84d, 0x7e0824e4, 0x2ccb49eb, 0x846a3bae, 0x8ff77888, 0xee5d60f6,
|
||||
0x7af75673, 0x2fdd5cdb, 0xa11631c1, 0x30f66f43, 0xb3faec54, 0x157fd7fa, 0xef8579cc, 0xd152de58,
|
||||
0xdb2ffd5e, 0x8f32ce19, 0x306af97a, 0x02f03ef8, 0x99319ad5, 0xc242fa0f, 0xa7e3ebb0, 0xc68e4906,
|
||||
0xb8da230c, 0x80823028, 0xdcdef3c8, 0xd35fb171, 0x088a1bc8, 0xbec0c560, 0x61a3c9e8, 0xbca8f54d,
|
||||
0xc72feffa, 0x22822e99, 0x82c570b4, 0xd8d94e89, 0x8b1c34bc, 0x301e16e6, 0x273be979, 0xb0ffeaa6,
|
||||
0x61d9b8c6, 0x00b24869, 0xb7ffce3f, 0x08dc283b, 0x43daf65a, 0xf7e19798, 0x7619b72f, 0x8f1c9ba4,
|
||||
0xdc8637a0, 0x16a7d3b1, 0x9fc393b7, 0xa7136eeb, 0xc6bcc63e, 0x1a513742, 0xef6828bc, 0x520365d6,
|
||||
0x2d6a77ab, 0x3527ed4b, 0x821fd216, 0x095c6e2e, 0xdb92f2fb, 0x5eea29cb, 0x145892f5, 0x91584f7f,
|
||||
0x5483697b, 0x2667a8cc, 0x85196048, 0x8c4bacea, 0x833860d4, 0x0d23e0f9, 0x6c387e8a, 0x0ae6d249,
|
||||
0xb284600c, 0xd835731d, 0xdcb1c647, 0xac4c56ea, 0x3ebd81b3, 0x230eabb0, 0x6438bc87, 0xf0b5b1fa,
|
||||
0x8f5ea2b3, 0xfc184642, 0x0a036b7a, 0x4fb089bd, 0x649da589, 0xa345415e, 0x5c038323, 0x3e5d3bb9,
|
||||
0x43d79572, 0x7e6dd07c, 0x06dfdf1e, 0x6c6cc4ef, 0x7160a539, 0x73bfbe70, 0x83877605, 0x4523ecf1,
|
||||
},
|
||||
{
|
||||
0x8defc240, 0x25fa5d9f, 0xeb903dbf, 0xe810c907, 0x47607fff, 0x369fe44b, 0x8c1fc644, 0xaececa90,
|
||||
0xbeb1f9bf, 0xeefbcaea, 0xe8cf1950, 0x51df07ae, 0x920e8806, 0xf0ad0548, 0xe13c8d83, 0x927010d5,
|
||||
0x11107d9f, 0x07647db9, 0xb2e3e4d4, 0x3d4f285e, 0xb9afa820, 0xfade82e0, 0xa067268b, 0x8272792e,
|
||||
0x553fb2c0, 0x489ae22b, 0xd4ef9794, 0x125e3fbc, 0x21fffcee, 0x825b1bfd, 0x9255c5ed, 0x1257a240,
|
||||
0x4e1a8302, 0xbae07fff, 0x528246e7, 0x8e57140e, 0x3373f7bf, 0x8c9f8188, 0xa6fc4ee8, 0xc982b5a5,
|
||||
0xa8c01db7, 0x579fc264, 0x67094f31, 0xf2bd3f5f, 0x40fff7c1, 0x1fb78dfc, 0x8e6bd2c1, 0x437be59b,
|
||||
0x99b03dbf, 0xb5dbc64b, 0x638dc0e6, 0x55819d99, 0xa197c81c, 0x4a012d6e, 0xc5884a28, 0xccc36f71,
|
||||
0xb843c213, 0x6c0743f1, 0x8309893c, 0x0feddd5f, 0x2f7fe850, 0xd7c07f7e, 0x02507fbf, 0x5afb9a04,
|
||||
0xa747d2d0, 0x1651192e, 0xaf70bf3e, 0x58c31380, 0x5f98302e, 0x727cc3c4, 0x0a0fb402, 0x0f7fef82,
|
||||
0x8c96fdad, 0x5d2c2aae, 0x8ee99a49, 0x50da88b8, 0x8427f4a0, 0x1eac5790, 0x796fb449, 0x8252dc15,
|
||||
0xefbd7d9b, 0xa672597d, 0xada840d8, 0x45f54504, 0xfa5d7403, 0xe83ec305, 0x4f91751a, 0x925669c2,
|
||||
0x23efe941, 0xa903f12e, 0x60270df2, 0x0276e4b6, 0x94fd6574, 0x927985b2, 0x8276dbcb, 0x02778176,
|
||||
0xf8af918d, 0x4e48f79e, 0x8f616ddf, 0xe29d840e, 0x842f7d83, 0x340ce5c8, 0x96bbb682, 0x93b4b148,
|
||||
0xef303cab, 0x984faf28, 0x779faf9b, 0x92dc560d, 0x224d1e20, 0x8437aa88, 0x7d29dc96, 0x2756d3dc,
|
||||
0x8b907cee, 0xb51fd240, 0xe7c07ce3, 0xe566b4a1, 0xc3e9615e, 0x3cf8209d, 0x6094d1e3, 0xcd9ca341,
|
||||
0x5c76460e, 0x00ea983b, 0xd4d67881, 0xfd47572c, 0xf76cedd9, 0xbda8229c, 0x127dadaa, 0x438a074e,
|
||||
0x1f97c090, 0x081bdb8a, 0x93a07ebe, 0xb938ca15, 0x97b03cff, 0x3dc2c0f8, 0x8d1ab2ec, 0x64380e51,
|
||||
0x68cc7bfb, 0xd90f2788, 0x12490181, 0x5de5ffd4, 0xdd7ef86a, 0x76a2e214, 0xb9a40368, 0x925d958f,
|
||||
0x4b39fffa, 0xba39aee9, 0xa4ffd30b, 0xfaf7933b, 0x6d498623, 0x193cbcfa, 0x27627545, 0x825cf47a,
|
||||
0x61bd8ba0, 0xd11e42d1, 0xcead04f4, 0x127ea392, 0x10428db7, 0x8272a972, 0x9270c4a8, 0x127de50b,
|
||||
0x285ba1c8, 0x3c62f44f, 0x35c0eaa5, 0xe805d231, 0x428929fb, 0xb4fcdf82, 0x4fb66a53, 0x0e7dc15b,
|
||||
0x1f081fab, 0x108618ae, 0xfcfd086d, 0xf9ff2889, 0x694bcc11, 0x236a5cae, 0x12deca4d, 0x2c3f8cc5,
|
||||
0xd2d02dfe, 0xf8ef5896, 0xe4cf52da, 0x95155b67, 0x494a488c, 0xb9b6a80c, 0x5c8f82bc, 0x89d36b45,
|
||||
0x3a609437, 0xec00c9a9, 0x44715253, 0x0a874b49, 0xd773bc40, 0x7c34671c, 0x02717ef6, 0x4feb5536,
|
||||
0xa2d02fff, 0xd2bf60c4, 0xd43f03c0, 0x50b4ef6d, 0x07478cd1, 0x006e1888, 0xa2e53f55, 0xb9e6d4bc,
|
||||
0xa2048016, 0x97573833, 0xd7207d67, 0xde0f8f3d, 0x72f87b33, 0xabcc4f33, 0x7688c55d, 0x7b00a6b0,
|
||||
0x947b0001, 0x570075d2, 0xf9bb88f8, 0x8942019e, 0x4264a5ff, 0x856302e0, 0x72dbd92b, 0xee971b69,
|
||||
0x6ea22fde, 0x5f08ae2b, 0xaf7a616d, 0xe5c98767, 0xcf1febd2, 0x61efc8c2, 0xf1ac2571, 0xcc8239c2,
|
||||
0x67214cb8, 0xb1e583d1, 0xb7dc3e62, 0x7f10bdce, 0xf90a5c38, 0x0ff0443d, 0x606e6dc6, 0x60543a49,
|
||||
0x5727c148, 0x2be98a1d, 0x8ab41738, 0x20e1be24, 0xaf96da0f, 0x68458425, 0x99833be5, 0x600d457d,
|
||||
0x282f9350, 0x8334b362, 0xd91d1120, 0x2b6d8da0, 0x642b1e31, 0x9c305a00, 0x52bce688, 0x1b03588a,
|
||||
0xf7baefd5, 0x4142ed9c, 0xa4315c11, 0x83323ec5, 0xdfef4636, 0xa133c501, 0xe9d3531c, 0xee353783,
|
||||
},
|
||||
{
|
||||
0x9db30420, 0x1fb6e9de, 0xa7be7bef, 0xd273a298, 0x4a4f7bdb, 0x64ad8c57, 0x85510443, 0xfa020ed1,
|
||||
0x7e287aff, 0xe60fb663, 0x095f35a1, 0x79ebf120, 0xfd059d43, 0x6497b7b1, 0xf3641f63, 0x241e4adf,
|
||||
0x28147f5f, 0x4fa2b8cd, 0xc9430040, 0x0cc32220, 0xfdd30b30, 0xc0a5374f, 0x1d2d00d9, 0x24147b15,
|
||||
0xee4d111a, 0x0fca5167, 0x71ff904c, 0x2d195ffe, 0x1a05645f, 0x0c13fefe, 0x081b08ca, 0x05170121,
|
||||
0x80530100, 0xe83e5efe, 0xac9af4f8, 0x7fe72701, 0xd2b8ee5f, 0x06df4261, 0xbb9e9b8a, 0x7293ea25,
|
||||
0xce84ffdf, 0xf5718801, 0x3dd64b04, 0xa26f263b, 0x7ed48400, 0x547eebe6, 0x446d4ca0, 0x6cf3d6f5,
|
||||
0x2649abdf, 0xaea0c7f5, 0x36338cc1, 0x503f7e93, 0xd3772061, 0x11b638e1, 0x72500e03, 0xf80eb2bb,
|
||||
0xabe0502e, 0xec8d77de, 0x57971e81, 0xe14f6746, 0xc9335400, 0x6920318f, 0x081dbb99, 0xffc304a5,
|
||||
0x4d351805, 0x7f3d5ce3, 0xa6c866c6, 0x5d5bcca9, 0xdaec6fea, 0x9f926f91, 0x9f46222f, 0x3991467d,
|
||||
0xa5bf6d8e, 0x1143c44f, 0x43958302, 0xd0214eeb, 0x022083b8, 0x3fb6180c, 0x18f8931e, 0x281658e6,
|
||||
0x26486e3e, 0x8bd78a70, 0x7477e4c1, 0xb506e07c, 0xf32d0a25, 0x79098b02, 0xe4eabb81, 0x28123b23,
|
||||
0x69dead38, 0x1574ca16, 0xdf871b62, 0x211c40b7, 0xa51a9ef9, 0x0014377b, 0x041e8ac8, 0x09114003,
|
||||
0xbd59e4d2, 0xe3d156d5, 0x4fe876d5, 0x2f91a340, 0x557be8de, 0x00eae4a7, 0x0ce5c2ec, 0x4db4bba6,
|
||||
0xe756bdff, 0xdd3369ac, 0xec17b035, 0x06572327, 0x99afc8b0, 0x56c8c391, 0x6b65811c, 0x5e146119,
|
||||
0x6e85cb75, 0xbe07c002, 0xc2325577, 0x893ff4ec, 0x5bbfc92d, 0xd0ec3b25, 0xb7801ab7, 0x8d6d3b24,
|
||||
0x20c763ef, 0xc366a5fc, 0x9c382880, 0x0ace3205, 0xaac9548a, 0xeca1d7c7, 0x041afa32, 0x1d16625a,
|
||||
0x6701902c, 0x9b757a54, 0x31d477f7, 0x9126b031, 0x36cc6fdb, 0xc70b8b46, 0xd9e66a48, 0x56e55a79,
|
||||
0x026a4ceb, 0x52437eff, 0x2f8f76b4, 0x0df980a5, 0x8674cde3, 0xedda04eb, 0x17a9be04, 0x2c18f4df,
|
||||
0xb7747f9d, 0xab2af7b4, 0xefc34d20, 0x2e096b7c, 0x1741a254, 0xe5b6a035, 0x213d42f6, 0x2c1c7c26,
|
||||
0x61c2f50f, 0x6552daf9, 0xd2c231f8, 0x25130f69, 0xd8167fa2, 0x0418f2c8, 0x001a96a6, 0x0d1526ab,
|
||||
0x63315c21, 0x5e0a72ec, 0x49bafefd, 0x187908d9, 0x8d0dbd86, 0x311170a7, 0x3e9b640c, 0xcc3e10d7,
|
||||
0xd5cad3b6, 0x0caec388, 0xf73001e1, 0x6c728aff, 0x71eae2a1, 0x1f9af36e, 0xcfcbd12f, 0xc1de8417,
|
||||
0xac07be6b, 0xcb44a1d8, 0x8b9b0f56, 0x013988c3, 0xb1c52fca, 0xb4be31cd, 0xd8782806, 0x12a3a4e2,
|
||||
0x6f7de532, 0x58fd7eb6, 0xd01ee900, 0x24adffc2, 0xf4990fc5, 0x9711aac5, 0x001d7b95, 0x82e5e7d2,
|
||||
0x109873f6, 0x00613096, 0xc32d9521, 0xada121ff, 0x29908415, 0x7fbb977f, 0xaf9eb3db, 0x29c9ed2a,
|
||||
0x5ce2a465, 0xa730f32c, 0xd0aa3fe8, 0x8a5cc091, 0xd49e2ce7, 0x0ce454a9, 0xd60acd86, 0x015f1919,
|
||||
0x77079103, 0xdea03af6, 0x78a8565e, 0xdee356df, 0x21f05cbe, 0x8b75e387, 0xb3c50651, 0xb8a5c3ef,
|
||||
0xd8eeb6d2, 0xe523be77, 0xc2154529, 0x2f69efdf, 0xafe67afb, 0xf470c4b2, 0xf3e0eb5b, 0xd6cc9876,
|
||||
0x39e4460c, 0x1fda8538, 0x1987832f, 0xca007367, 0xa99144f8, 0x296b299e, 0x492fc295, 0x9266beab,
|
||||
0xb5676e69, 0x9bd3ddda, 0xdf7e052f, 0xdb25701c, 0x1b5e51ee, 0xf65324e6, 0x6afce36c, 0x0316cc04,
|
||||
0x8644213e, 0xb7dc59d0, 0x7965291f, 0xccd6fd43, 0x41823979, 0x932bcdf6, 0xb657c34d, 0x4edfd282,
|
||||
0x7ae5290c, 0x3cb9536b, 0x851e20fe, 0x9833557e, 0x13ecf0b0, 0xd3ffb372, 0x3f85c5c1, 0x0aef7ed2,
|
||||
},
|
||||
{
|
||||
0x7ec90c04, 0x2c6e74b9, 0x9b0e66df, 0xa6337911, 0xb86a7fff, 0x1dd358f5, 0x44dd9d44, 0x1731167f,
|
||||
0x08fbf1fa, 0xe7f511cc, 0xd2051b00, 0x735aba00, 0x2ab722d8, 0x386381cb, 0xacf6243a, 0x69befd7a,
|
||||
0xe6a2e77f, 0xf0c720cd, 0xc4494816, 0xccf5c180, 0x38851640, 0x15b0a848, 0xe68b18cb, 0x4caadeff,
|
||||
0x5f480a01, 0x0412b2aa, 0x259814fc, 0x41d0efe2, 0x4e40b48d, 0x248eb6fb, 0x8dba1cfe, 0x41a99b02,
|
||||
0x1a550a04, 0xba8f65cb, 0x7251f4e7, 0x95a51725, 0xc106ecd7, 0x97a5980a, 0xc539b9aa, 0x4d79fe6a,
|
||||
0xf2f3f763, 0x68af8040, 0xed0c9e56, 0x11b4958b, 0xe1eb5a88, 0x8709e6b0, 0xd7e07156, 0x4e29fea7,
|
||||
0x6366e52d, 0x02d1c000, 0xc4ac8e05, 0x9377f571, 0x0c05372a, 0x578535f2, 0x2261be02, 0xd642a0c9,
|
||||
0xdf13a280, 0x74b55bd2, 0x682199c0, 0xd421e5ec, 0x53fb3ce8, 0xc8adedb3, 0x28a87fc9, 0x3d959981,
|
||||
0x5c1ff900, 0xfe38d399, 0x0c4eff0b, 0x062407ea, 0xaa2f4fb1, 0x4fb96976, 0x90c79505, 0xb0a8a774,
|
||||
0xef55a1ff, 0xe59ca2c2, 0xa6b62d27, 0xe66a4263, 0xdf65001f, 0x0ec50966, 0xdfdd55bc, 0x29de0655,
|
||||
0x911e739a, 0x17af8975, 0x32c7911c, 0x89f89468, 0x0d01e980, 0x524755f4, 0x03b63cc9, 0x0cc844b2,
|
||||
0xbcf3f0aa, 0x87ac36e9, 0xe53a7426, 0x01b3d82b, 0x1a9e7449, 0x64ee2d7e, 0xcddbb1da, 0x01c94910,
|
||||
0xb868bf80, 0x0d26f3fd, 0x9342ede7, 0x04a5c284, 0x636737b6, 0x50f5b616, 0xf24766e3, 0x8eca36c1,
|
||||
0x136e05db, 0xfef18391, 0xfb887a37, 0xd6e7f7d4, 0xc7fb7dc9, 0x3063fcdf, 0xb6f589de, 0xec2941da,
|
||||
0x26e46695, 0xb7566419, 0xf654efc5, 0xd08d58b7, 0x48925401, 0xc1bacb7f, 0xe5ff550f, 0xb6083049,
|
||||
0x5bb5d0e8, 0x87d72e5a, 0xab6a6ee1, 0x223a66ce, 0xc62bf3cd, 0x9e0885f9, 0x68cb3e47, 0x086c010f,
|
||||
0xa21de820, 0xd18b69de, 0xf3f65777, 0xfa02c3f6, 0x407edac3, 0xcbb3d550, 0x1793084d, 0xb0d70eba,
|
||||
0x0ab378d5, 0xd951fb0c, 0xded7da56, 0x4124bbe4, 0x94ca0b56, 0x0f5755d1, 0xe0e1e56e, 0x6184b5be,
|
||||
0x580a249f, 0x94f74bc0, 0xe327888e, 0x9f7b5561, 0xc3dc0280, 0x05687715, 0x646c6bd7, 0x44904db3,
|
||||
0x66b4f0a3, 0xc0f1648a, 0x697ed5af, 0x49e92ff6, 0x309e374f, 0x2cb6356a, 0x85808573, 0x4991f840,
|
||||
0x76f0ae02, 0x083be84d, 0x28421c9a, 0x44489406, 0x736e4cb8, 0xc1092910, 0x8bc95fc6, 0x7d869cf4,
|
||||
0x134f616f, 0x2e77118d, 0xb31b2be1, 0xaa90b472, 0x3ca5d717, 0x7d161bba, 0x9cad9010, 0xaf462ba2,
|
||||
0x9fe459d2, 0x45d34559, 0xd9f2da13, 0xdbc65487, 0xf3e4f94e, 0x176d486f, 0x097c13ea, 0x631da5c7,
|
||||
0x445f7382, 0x175683f4, 0xcdc66a97, 0x70be0288, 0xb3cdcf72, 0x6e5dd2f3, 0x20936079, 0x459b80a5,
|
||||
0xbe60e2db, 0xa9c23101, 0xeba5315c, 0x224e42f2, 0x1c5c1572, 0xf6721b2c, 0x1ad2fff3, 0x8c25404e,
|
||||
0x324ed72f, 0x4067b7fd, 0x0523138e, 0x5ca3bc78, 0xdc0fd66e, 0x75922283, 0x784d6b17, 0x58ebb16e,
|
||||
0x44094f85, 0x3f481d87, 0xfcfeae7b, 0x77b5ff76, 0x8c2302bf, 0xaaf47556, 0x5f46b02a, 0x2b092801,
|
||||
0x3d38f5f7, 0x0ca81f36, 0x52af4a8a, 0x66d5e7c0, 0xdf3b0874, 0x95055110, 0x1b5ad7a8, 0xf61ed5ad,
|
||||
0x6cf6e479, 0x20758184, 0xd0cefa65, 0x88f7be58, 0x4a046826, 0x0ff6f8f3, 0xa09c7f70, 0x5346aba0,
|
||||
0x5ce96c28, 0xe176eda3, 0x6bac307f, 0x376829d2, 0x85360fa9, 0x17e3fe2a, 0x24b79767, 0xf5a96b20,
|
||||
0xd6cd2595, 0x68ff1ebf, 0x7555442c, 0xf19f06be, 0xf9e0659a, 0xeeb9491d, 0x34010718, 0xbb30cab8,
|
||||
0xe822fe15, 0x88570983, 0x750e6249, 0xda627e55, 0x5e76ffa8, 0xb1534546, 0x6d47de08, 0xefe9e7d4,
|
||||
},
|
||||
{
|
||||
0xf6fa8f9d, 0x2cac6ce1, 0x4ca34867, 0xe2337f7c, 0x95db08e7, 0x016843b4, 0xeced5cbc, 0x325553ac,
|
||||
0xbf9f0960, 0xdfa1e2ed, 0x83f0579d, 0x63ed86b9, 0x1ab6a6b8, 0xde5ebe39, 0xf38ff732, 0x8989b138,
|
||||
0x33f14961, 0xc01937bd, 0xf506c6da, 0xe4625e7e, 0xa308ea99, 0x4e23e33c, 0x79cbd7cc, 0x48a14367,
|
||||
0xa3149619, 0xfec94bd5, 0xa114174a, 0xeaa01866, 0xa084db2d, 0x09a8486f, 0xa888614a, 0x2900af98,
|
||||
0x01665991, 0xe1992863, 0xc8f30c60, 0x2e78ef3c, 0xd0d51932, 0xcf0fec14, 0xf7ca07d2, 0xd0a82072,
|
||||
0xfd41197e, 0x9305a6b0, 0xe86be3da, 0x74bed3cd, 0x372da53c, 0x4c7f4448, 0xdab5d440, 0x6dba0ec3,
|
||||
0x083919a7, 0x9fbaeed9, 0x49dbcfb0, 0x4e670c53, 0x5c3d9c01, 0x64bdb941, 0x2c0e636a, 0xba7dd9cd,
|
||||
0xea6f7388, 0xe70bc762, 0x35f29adb, 0x5c4cdd8d, 0xf0d48d8c, 0xb88153e2, 0x08a19866, 0x1ae2eac8,
|
||||
0x284caf89, 0xaa928223, 0x9334be53, 0x3b3a21bf, 0x16434be3, 0x9aea3906, 0xefe8c36e, 0xf890cdd9,
|
||||
0x80226dae, 0xc340a4a3, 0xdf7e9c09, 0xa694a807, 0x5b7c5ecc, 0x221db3a6, 0x9a69a02f, 0x68818a54,
|
||||
0xceb2296f, 0x53c0843a, 0xfe893655, 0x25bfe68a, 0xb4628abc, 0xcf222ebf, 0x25ac6f48, 0xa9a99387,
|
||||
0x53bddb65, 0xe76ffbe7, 0xe967fd78, 0x0ba93563, 0x8e342bc1, 0xe8a11be9, 0x4980740d, 0xc8087dfc,
|
||||
0x8de4bf99, 0xa11101a0, 0x7fd37975, 0xda5a26c0, 0xe81f994f, 0x9528cd89, 0xfd339fed, 0xb87834bf,
|
||||
0x5f04456d, 0x22258698, 0xc9c4c83b, 0x2dc156be, 0x4f628daa, 0x57f55ec5, 0xe2220abe, 0xd2916ebf,
|
||||
0x4ec75b95, 0x24f2c3c0, 0x42d15d99, 0xcd0d7fa0, 0x7b6e27ff, 0xa8dc8af0, 0x7345c106, 0xf41e232f,
|
||||
0x35162386, 0xe6ea8926, 0x3333b094, 0x157ec6f2, 0x372b74af, 0x692573e4, 0xe9a9d848, 0xf3160289,
|
||||
0x3a62ef1d, 0xa787e238, 0xf3a5f676, 0x74364853, 0x20951063, 0x4576698d, 0xb6fad407, 0x592af950,
|
||||
0x36f73523, 0x4cfb6e87, 0x7da4cec0, 0x6c152daa, 0xcb0396a8, 0xc50dfe5d, 0xfcd707ab, 0x0921c42f,
|
||||
0x89dff0bb, 0x5fe2be78, 0x448f4f33, 0x754613c9, 0x2b05d08d, 0x48b9d585, 0xdc049441, 0xc8098f9b,
|
||||
0x7dede786, 0xc39a3373, 0x42410005, 0x6a091751, 0x0ef3c8a6, 0x890072d6, 0x28207682, 0xa9a9f7be,
|
||||
0xbf32679d, 0xd45b5b75, 0xb353fd00, 0xcbb0e358, 0x830f220a, 0x1f8fb214, 0xd372cf08, 0xcc3c4a13,
|
||||
0x8cf63166, 0x061c87be, 0x88c98f88, 0x6062e397, 0x47cf8e7a, 0xb6c85283, 0x3cc2acfb, 0x3fc06976,
|
||||
0x4e8f0252, 0x64d8314d, 0xda3870e3, 0x1e665459, 0xc10908f0, 0x513021a5, 0x6c5b68b7, 0x822f8aa0,
|
||||
0x3007cd3e, 0x74719eef, 0xdc872681, 0x073340d4, 0x7e432fd9, 0x0c5ec241, 0x8809286c, 0xf592d891,
|
||||
0x08a930f6, 0x957ef305, 0xb7fbffbd, 0xc266e96f, 0x6fe4ac98, 0xb173ecc0, 0xbc60b42a, 0x953498da,
|
||||
0xfba1ae12, 0x2d4bd736, 0x0f25faab, 0xa4f3fceb, 0xe2969123, 0x257f0c3d, 0x9348af49, 0x361400bc,
|
||||
0xe8816f4a, 0x3814f200, 0xa3f94043, 0x9c7a54c2, 0xbc704f57, 0xda41e7f9, 0xc25ad33a, 0x54f4a084,
|
||||
0xb17f5505, 0x59357cbe, 0xedbd15c8, 0x7f97c5ab, 0xba5ac7b5, 0xb6f6deaf, 0x3a479c3a, 0x5302da25,
|
||||
0x653d7e6a, 0x54268d49, 0x51a477ea, 0x5017d55b, 0xd7d25d88, 0x44136c76, 0x0404a8c8, 0xb8e5a121,
|
||||
0xb81a928a, 0x60ed5869, 0x97c55b96, 0xeaec991b, 0x29935913, 0x01fdb7f1, 0x088e8dfa, 0x9ab6f6f5,
|
||||
0x3b4cbf9f, 0x4a5de3ab, 0xe6051d35, 0xa0e1d855, 0xd36b4cf1, 0xf544edeb, 0xb0e93524, 0xbebb8fbd,
|
||||
0xa2d762cf, 0x49c92f54, 0x38b5f331, 0x7128a454, 0x48392905, 0xa65b1db8, 0x851c97bd, 0xd675cf2f,
|
||||
},
|
||||
{
|
||||
0x85e04019, 0x332bf567, 0x662dbfff, 0xcfc65693, 0x2a8d7f6f, 0xab9bc912, 0xde6008a1, 0x2028da1f,
|
||||
0x0227bce7, 0x4d642916, 0x18fac300, 0x50f18b82, 0x2cb2cb11, 0xb232e75c, 0x4b3695f2, 0xb28707de,
|
||||
0xa05fbcf6, 0xcd4181e9, 0xe150210c, 0xe24ef1bd, 0xb168c381, 0xfde4e789, 0x5c79b0d8, 0x1e8bfd43,
|
||||
0x4d495001, 0x38be4341, 0x913cee1d, 0x92a79c3f, 0x089766be, 0xbaeeadf4, 0x1286becf, 0xb6eacb19,
|
||||
0x2660c200, 0x7565bde4, 0x64241f7a, 0x8248dca9, 0xc3b3ad66, 0x28136086, 0x0bd8dfa8, 0x356d1cf2,
|
||||
0x107789be, 0xb3b2e9ce, 0x0502aa8f, 0x0bc0351e, 0x166bf52a, 0xeb12ff82, 0xe3486911, 0xd34d7516,
|
||||
0x4e7b3aff, 0x5f43671b, 0x9cf6e037, 0x4981ac83, 0x334266ce, 0x8c9341b7, 0xd0d854c0, 0xcb3a6c88,
|
||||
0x47bc2829, 0x4725ba37, 0xa66ad22b, 0x7ad61f1e, 0x0c5cbafa, 0x4437f107, 0xb6e79962, 0x42d2d816,
|
||||
0x0a961288, 0xe1a5c06e, 0x13749e67, 0x72fc081a, 0xb1d139f7, 0xf9583745, 0xcf19df58, 0xbec3f756,
|
||||
0xc06eba30, 0x07211b24, 0x45c28829, 0xc95e317f, 0xbc8ec511, 0x38bc46e9, 0xc6e6fa14, 0xbae8584a,
|
||||
0xad4ebc46, 0x468f508b, 0x7829435f, 0xf124183b, 0x821dba9f, 0xaff60ff4, 0xea2c4e6d, 0x16e39264,
|
||||
0x92544a8b, 0x009b4fc3, 0xaba68ced, 0x9ac96f78, 0x06a5b79a, 0xb2856e6e, 0x1aec3ca9, 0xbe838688,
|
||||
0x0e0804e9, 0x55f1be56, 0xe7e5363b, 0xb3a1f25d, 0xf7debb85, 0x61fe033c, 0x16746233, 0x3c034c28,
|
||||
0xda6d0c74, 0x79aac56c, 0x3ce4e1ad, 0x51f0c802, 0x98f8f35a, 0x1626a49f, 0xeed82b29, 0x1d382fe3,
|
||||
0x0c4fb99a, 0xbb325778, 0x3ec6d97b, 0x6e77a6a9, 0xcb658b5c, 0xd45230c7, 0x2bd1408b, 0x60c03eb7,
|
||||
0xb9068d78, 0xa33754f4, 0xf430c87d, 0xc8a71302, 0xb96d8c32, 0xebd4e7be, 0xbe8b9d2d, 0x7979fb06,
|
||||
0xe7225308, 0x8b75cf77, 0x11ef8da4, 0xe083c858, 0x8d6b786f, 0x5a6317a6, 0xfa5cf7a0, 0x5dda0033,
|
||||
0xf28ebfb0, 0xf5b9c310, 0xa0eac280, 0x08b9767a, 0xa3d9d2b0, 0x79d34217, 0x021a718d, 0x9ac6336a,
|
||||
0x2711fd60, 0x438050e3, 0x069908a8, 0x3d7fedc4, 0x826d2bef, 0x4eeb8476, 0x488dcf25, 0x36c9d566,
|
||||
0x28e74e41, 0xc2610aca, 0x3d49a9cf, 0xbae3b9df, 0xb65f8de6, 0x92aeaf64, 0x3ac7d5e6, 0x9ea80509,
|
||||
0xf22b017d, 0xa4173f70, 0xdd1e16c3, 0x15e0d7f9, 0x50b1b887, 0x2b9f4fd5, 0x625aba82, 0x6a017962,
|
||||
0x2ec01b9c, 0x15488aa9, 0xd716e740, 0x40055a2c, 0x93d29a22, 0xe32dbf9a, 0x058745b9, 0x3453dc1e,
|
||||
0xd699296e, 0x496cff6f, 0x1c9f4986, 0xdfe2ed07, 0xb87242d1, 0x19de7eae, 0x053e561a, 0x15ad6f8c,
|
||||
0x66626c1c, 0x7154c24c, 0xea082b2a, 0x93eb2939, 0x17dcb0f0, 0x58d4f2ae, 0x9ea294fb, 0x52cf564c,
|
||||
0x9883fe66, 0x2ec40581, 0x763953c3, 0x01d6692e, 0xd3a0c108, 0xa1e7160e, 0xe4f2dfa6, 0x693ed285,
|
||||
0x74904698, 0x4c2b0edd, 0x4f757656, 0x5d393378, 0xa132234f, 0x3d321c5d, 0xc3f5e194, 0x4b269301,
|
||||
0xc79f022f, 0x3c997e7e, 0x5e4f9504, 0x3ffafbbd, 0x76f7ad0e, 0x296693f4, 0x3d1fce6f, 0xc61e45be,
|
||||
0xd3b5ab34, 0xf72bf9b7, 0x1b0434c0, 0x4e72b567, 0x5592a33d, 0xb5229301, 0xcfd2a87f, 0x60aeb767,
|
||||
0x1814386b, 0x30bcc33d, 0x38a0c07d, 0xfd1606f2, 0xc363519b, 0x589dd390, 0x5479f8e6, 0x1cb8d647,
|
||||
0x97fd61a9, 0xea7759f4, 0x2d57539d, 0x569a58cf, 0xe84e63ad, 0x462e1b78, 0x6580f87e, 0xf3817914,
|
||||
0x91da55f4, 0x40a230f3, 0xd1988f35, 0xb6e318d2, 0x3ffa50bc, 0x3d40f021, 0xc3c0bdae, 0x4958c24c,
|
||||
0x518f36b2, 0x84b1d370, 0x0fedce83, 0x878ddada, 0xf2a279c7, 0x94e01be8, 0x90716f4b, 0x954b8aa3,
|
||||
},
|
||||
{
|
||||
0xe216300d, 0xbbddfffc, 0xa7ebdabd, 0x35648095, 0x7789f8b7, 0xe6c1121b, 0x0e241600, 0x052ce8b5,
|
||||
0x11a9cfb0, 0xe5952f11, 0xece7990a, 0x9386d174, 0x2a42931c, 0x76e38111, 0xb12def3a, 0x37ddddfc,
|
||||
0xde9adeb1, 0x0a0cc32c, 0xbe197029, 0x84a00940, 0xbb243a0f, 0xb4d137cf, 0xb44e79f0, 0x049eedfd,
|
||||
0x0b15a15d, 0x480d3168, 0x8bbbde5a, 0x669ded42, 0xc7ece831, 0x3f8f95e7, 0x72df191b, 0x7580330d,
|
||||
0x94074251, 0x5c7dcdfa, 0xabbe6d63, 0xaa402164, 0xb301d40a, 0x02e7d1ca, 0x53571dae, 0x7a3182a2,
|
||||
0x12a8ddec, 0xfdaa335d, 0x176f43e8, 0x71fb46d4, 0x38129022, 0xce949ad4, 0xb84769ad, 0x965bd862,
|
||||
0x82f3d055, 0x66fb9767, 0x15b80b4e, 0x1d5b47a0, 0x4cfde06f, 0xc28ec4b8, 0x57e8726e, 0x647a78fc,
|
||||
0x99865d44, 0x608bd593, 0x6c200e03, 0x39dc5ff6, 0x5d0b00a3, 0xae63aff2, 0x7e8bd632, 0x70108c0c,
|
||||
0xbbd35049, 0x2998df04, 0x980cf42a, 0x9b6df491, 0x9e7edd53, 0x06918548, 0x58cb7e07, 0x3b74ef2e,
|
||||
0x522fffb1, 0xd24708cc, 0x1c7e27cd, 0xa4eb215b, 0x3cf1d2e2, 0x19b47a38, 0x424f7618, 0x35856039,
|
||||
0x9d17dee7, 0x27eb35e6, 0xc9aff67b, 0x36baf5b8, 0x09c467cd, 0xc18910b1, 0xe11dbf7b, 0x06cd1af8,
|
||||
0x7170c608, 0x2d5e3354, 0xd4de495a, 0x64c6d006, 0xbcc0c62c, 0x3dd00db3, 0x708f8f34, 0x77d51b42,
|
||||
0x264f620f, 0x24b8d2bf, 0x15c1b79e, 0x46a52564, 0xf8d7e54e, 0x3e378160, 0x7895cda5, 0x859c15a5,
|
||||
0xe6459788, 0xc37bc75f, 0xdb07ba0c, 0x0676a3ab, 0x7f229b1e, 0x31842e7b, 0x24259fd7, 0xf8bef472,
|
||||
0x835ffcb8, 0x6df4c1f2, 0x96f5b195, 0xfd0af0fc, 0xb0fe134c, 0xe2506d3d, 0x4f9b12ea, 0xf215f225,
|
||||
0xa223736f, 0x9fb4c428, 0x25d04979, 0x34c713f8, 0xc4618187, 0xea7a6e98, 0x7cd16efc, 0x1436876c,
|
||||
0xf1544107, 0xbedeee14, 0x56e9af27, 0xa04aa441, 0x3cf7c899, 0x92ecbae6, 0xdd67016d, 0x151682eb,
|
||||
0xa842eedf, 0xfdba60b4, 0xf1907b75, 0x20e3030f, 0x24d8c29e, 0xe139673b, 0xefa63fb8, 0x71873054,
|
||||
0xb6f2cf3b, 0x9f326442, 0xcb15a4cc, 0xb01a4504, 0xf1e47d8d, 0x844a1be5, 0xbae7dfdc, 0x42cbda70,
|
||||
0xcd7dae0a, 0x57e85b7a, 0xd53f5af6, 0x20cf4d8c, 0xcea4d428, 0x79d130a4, 0x3486ebfb, 0x33d3cddc,
|
||||
0x77853b53, 0x37effcb5, 0xc5068778, 0xe580b3e6, 0x4e68b8f4, 0xc5c8b37e, 0x0d809ea2, 0x398feb7c,
|
||||
0x132a4f94, 0x43b7950e, 0x2fee7d1c, 0x223613bd, 0xdd06caa2, 0x37df932b, 0xc4248289, 0xacf3ebc3,
|
||||
0x5715f6b7, 0xef3478dd, 0xf267616f, 0xc148cbe4, 0x9052815e, 0x5e410fab, 0xb48a2465, 0x2eda7fa4,
|
||||
0xe87b40e4, 0xe98ea084, 0x5889e9e1, 0xefd390fc, 0xdd07d35b, 0xdb485694, 0x38d7e5b2, 0x57720101,
|
||||
0x730edebc, 0x5b643113, 0x94917e4f, 0x503c2fba, 0x646f1282, 0x7523d24a, 0xe0779695, 0xf9c17a8f,
|
||||
0x7a5b2121, 0xd187b896, 0x29263a4d, 0xba510cdf, 0x81f47c9f, 0xad1163ed, 0xea7b5965, 0x1a00726e,
|
||||
0x11403092, 0x00da6d77, 0x4a0cdd61, 0xad1f4603, 0x605bdfb0, 0x9eedc364, 0x22ebe6a8, 0xcee7d28a,
|
||||
0xa0e736a0, 0x5564a6b9, 0x10853209, 0xc7eb8f37, 0x2de705ca, 0x8951570f, 0xdf09822b, 0xbd691a6c,
|
||||
0xaa12e4f2, 0x87451c0f, 0xe0f6a27a, 0x3ada4819, 0x4cf1764f, 0x0d771c2b, 0x67cdb156, 0x350d8384,
|
||||
0x5938fa0f, 0x42399ef3, 0x36997b07, 0x0e84093d, 0x4aa93e61, 0x8360d87b, 0x1fa98b0c, 0x1149382c,
|
||||
0xe97625a5, 0x0614d1b7, 0x0e25244b, 0x0c768347, 0x589e8d82, 0x0d2059d1, 0xa466bb1e, 0xf8da0a82,
|
||||
0x04f19130, 0xba6e4ec0, 0x99265164, 0x1ee7230d, 0x50b2ad80, 0xeaee6801, 0x8db2a283, 0xea8bf59e,
|
||||
},
|
||||
}
|
||||
222
vendor/golang.org/x/crypto/ed25519/ed25519.go
generated
vendored
Normal file
222
vendor/golang.org/x/crypto/ed25519/ed25519.go
generated
vendored
Normal file
@ -0,0 +1,222 @@
|
||||
// Copyright 2016 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// In Go 1.13, the ed25519 package was promoted to the standard library as
|
||||
// crypto/ed25519, and this package became a wrapper for the standard library one.
|
||||
//
|
||||
// +build !go1.13
|
||||
|
||||
// Package ed25519 implements the Ed25519 signature algorithm. See
|
||||
// https://ed25519.cr.yp.to/.
|
||||
//
|
||||
// These functions are also compatible with the “Ed25519” function defined in
|
||||
// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
|
||||
// representation includes a public key suffix to make multiple signing
|
||||
// operations with the same key more efficient. This package refers to the RFC
|
||||
// 8032 private key as the “seed”.
|
||||
package ed25519
|
||||
|
||||
// This code is a port of the public domain, “ref10” implementation of ed25519
|
||||
// from SUPERCOP.
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
cryptorand "crypto/rand"
|
||||
"crypto/sha512"
|
||||
"errors"
|
||||
"io"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/crypto/ed25519/internal/edwards25519"
|
||||
)
|
||||
|
||||
const (
|
||||
// PublicKeySize is the size, in bytes, of public keys as used in this package.
|
||||
PublicKeySize = 32
|
||||
// PrivateKeySize is the size, in bytes, of private keys as used in this package.
|
||||
PrivateKeySize = 64
|
||||
// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
|
||||
SignatureSize = 64
|
||||
// SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
|
||||
SeedSize = 32
|
||||
)
|
||||
|
||||
// PublicKey is the type of Ed25519 public keys.
|
||||
type PublicKey []byte
|
||||
|
||||
// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
|
||||
type PrivateKey []byte
|
||||
|
||||
// Public returns the PublicKey corresponding to priv.
|
||||
func (priv PrivateKey) Public() crypto.PublicKey {
|
||||
publicKey := make([]byte, PublicKeySize)
|
||||
copy(publicKey, priv[32:])
|
||||
return PublicKey(publicKey)
|
||||
}
|
||||
|
||||
// Seed returns the private key seed corresponding to priv. It is provided for
|
||||
// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds
|
||||
// in this package.
|
||||
func (priv PrivateKey) Seed() []byte {
|
||||
seed := make([]byte, SeedSize)
|
||||
copy(seed, priv[:32])
|
||||
return seed
|
||||
}
|
||||
|
||||
// Sign signs the given message with priv.
|
||||
// Ed25519 performs two passes over messages to be signed and therefore cannot
|
||||
// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
|
||||
// indicate the message hasn't been hashed. This can be achieved by passing
|
||||
// crypto.Hash(0) as the value for opts.
|
||||
func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
|
||||
if opts.HashFunc() != crypto.Hash(0) {
|
||||
return nil, errors.New("ed25519: cannot sign hashed message")
|
||||
}
|
||||
|
||||
return Sign(priv, message), nil
|
||||
}
|
||||
|
||||
// GenerateKey generates a public/private key pair using entropy from rand.
|
||||
// If rand is nil, crypto/rand.Reader will be used.
|
||||
func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
|
||||
if rand == nil {
|
||||
rand = cryptorand.Reader
|
||||
}
|
||||
|
||||
seed := make([]byte, SeedSize)
|
||||
if _, err := io.ReadFull(rand, seed); err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
privateKey := NewKeyFromSeed(seed)
|
||||
publicKey := make([]byte, PublicKeySize)
|
||||
copy(publicKey, privateKey[32:])
|
||||
|
||||
return publicKey, privateKey, nil
|
||||
}
|
||||
|
||||
// NewKeyFromSeed calculates a private key from a seed. It will panic if
|
||||
// len(seed) is not SeedSize. This function is provided for interoperability
|
||||
// with RFC 8032. RFC 8032's private keys correspond to seeds in this
|
||||
// package.
|
||||
func NewKeyFromSeed(seed []byte) PrivateKey {
|
||||
if l := len(seed); l != SeedSize {
|
||||
panic("ed25519: bad seed length: " + strconv.Itoa(l))
|
||||
}
|
||||
|
||||
digest := sha512.Sum512(seed)
|
||||
digest[0] &= 248
|
||||
digest[31] &= 127
|
||||
digest[31] |= 64
|
||||
|
||||
var A edwards25519.ExtendedGroupElement
|
||||
var hBytes [32]byte
|
||||
copy(hBytes[:], digest[:])
|
||||
edwards25519.GeScalarMultBase(&A, &hBytes)
|
||||
var publicKeyBytes [32]byte
|
||||
A.ToBytes(&publicKeyBytes)
|
||||
|
||||
privateKey := make([]byte, PrivateKeySize)
|
||||
copy(privateKey, seed)
|
||||
copy(privateKey[32:], publicKeyBytes[:])
|
||||
|
||||
return privateKey
|
||||
}
|
||||
|
||||
// Sign signs the message with privateKey and returns a signature. It will
|
||||
// panic if len(privateKey) is not PrivateKeySize.
|
||||
func Sign(privateKey PrivateKey, message []byte) []byte {
|
||||
if l := len(privateKey); l != PrivateKeySize {
|
||||
panic("ed25519: bad private key length: " + strconv.Itoa(l))
|
||||
}
|
||||
|
||||
h := sha512.New()
|
||||
h.Write(privateKey[:32])
|
||||
|
||||
var digest1, messageDigest, hramDigest [64]byte
|
||||
var expandedSecretKey [32]byte
|
||||
h.Sum(digest1[:0])
|
||||
copy(expandedSecretKey[:], digest1[:])
|
||||
expandedSecretKey[0] &= 248
|
||||
expandedSecretKey[31] &= 63
|
||||
expandedSecretKey[31] |= 64
|
||||
|
||||
h.Reset()
|
||||
h.Write(digest1[32:])
|
||||
h.Write(message)
|
||||
h.Sum(messageDigest[:0])
|
||||
|
||||
var messageDigestReduced [32]byte
|
||||
edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
|
||||
var R edwards25519.ExtendedGroupElement
|
||||
edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
|
||||
|
||||
var encodedR [32]byte
|
||||
R.ToBytes(&encodedR)
|
||||
|
||||
h.Reset()
|
||||
h.Write(encodedR[:])
|
||||
h.Write(privateKey[32:])
|
||||
h.Write(message)
|
||||
h.Sum(hramDigest[:0])
|
||||
var hramDigestReduced [32]byte
|
||||
edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
|
||||
|
||||
var s [32]byte
|
||||
edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
|
||||
|
||||
signature := make([]byte, SignatureSize)
|
||||
copy(signature[:], encodedR[:])
|
||||
copy(signature[32:], s[:])
|
||||
|
||||
return signature
|
||||
}
|
||||
|
||||
// Verify reports whether sig is a valid signature of message by publicKey. It
|
||||
// will panic if len(publicKey) is not PublicKeySize.
|
||||
func Verify(publicKey PublicKey, message, sig []byte) bool {
|
||||
if l := len(publicKey); l != PublicKeySize {
|
||||
panic("ed25519: bad public key length: " + strconv.Itoa(l))
|
||||
}
|
||||
|
||||
if len(sig) != SignatureSize || sig[63]&224 != 0 {
|
||||
return false
|
||||
}
|
||||
|
||||
var A edwards25519.ExtendedGroupElement
|
||||
var publicKeyBytes [32]byte
|
||||
copy(publicKeyBytes[:], publicKey)
|
||||
if !A.FromBytes(&publicKeyBytes) {
|
||||
return false
|
||||
}
|
||||
edwards25519.FeNeg(&A.X, &A.X)
|
||||
edwards25519.FeNeg(&A.T, &A.T)
|
||||
|
||||
h := sha512.New()
|
||||
h.Write(sig[:32])
|
||||
h.Write(publicKey[:])
|
||||
h.Write(message)
|
||||
var digest [64]byte
|
||||
h.Sum(digest[:0])
|
||||
|
||||
var hReduced [32]byte
|
||||
edwards25519.ScReduce(&hReduced, &digest)
|
||||
|
||||
var R edwards25519.ProjectiveGroupElement
|
||||
var s [32]byte
|
||||
copy(s[:], sig[32:])
|
||||
|
||||
// https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in
|
||||
// the range [0, order) in order to prevent signature malleability.
|
||||
if !edwards25519.ScMinimal(&s) {
|
||||
return false
|
||||
}
|
||||
|
||||
edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &s)
|
||||
|
||||
var checkR [32]byte
|
||||
R.ToBytes(&checkR)
|
||||
return bytes.Equal(sig[:32], checkR[:])
|
||||
}
|
||||
73
vendor/golang.org/x/crypto/ed25519/ed25519_go113.go
generated
vendored
Normal file
73
vendor/golang.org/x/crypto/ed25519/ed25519_go113.go
generated
vendored
Normal file
@ -0,0 +1,73 @@
|
||||
// Copyright 2019 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build go1.13
|
||||
|
||||
// Package ed25519 implements the Ed25519 signature algorithm. See
|
||||
// https://ed25519.cr.yp.to/.
|
||||
//
|
||||
// These functions are also compatible with the “Ed25519” function defined in
|
||||
// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
|
||||
// representation includes a public key suffix to make multiple signing
|
||||
// operations with the same key more efficient. This package refers to the RFC
|
||||
// 8032 private key as the “seed”.
|
||||
//
|
||||
// Beginning with Go 1.13, the functionality of this package was moved to the
|
||||
// standard library as crypto/ed25519. This package only acts as a compatibility
|
||||
// wrapper.
|
||||
package ed25519
|
||||
|
||||
import (
|
||||
"crypto/ed25519"
|
||||
"io"
|
||||
)
|
||||
|
||||
const (
|
||||
// PublicKeySize is the size, in bytes, of public keys as used in this package.
|
||||
PublicKeySize = 32
|
||||
// PrivateKeySize is the size, in bytes, of private keys as used in this package.
|
||||
PrivateKeySize = 64
|
||||
// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
|
||||
SignatureSize = 64
|
||||
// SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
|
||||
SeedSize = 32
|
||||
)
|
||||
|
||||
// PublicKey is the type of Ed25519 public keys.
|
||||
//
|
||||
// This type is an alias for crypto/ed25519's PublicKey type.
|
||||
// See the crypto/ed25519 package for the methods on this type.
|
||||
type PublicKey = ed25519.PublicKey
|
||||
|
||||
// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
|
||||
//
|
||||
// This type is an alias for crypto/ed25519's PrivateKey type.
|
||||
// See the crypto/ed25519 package for the methods on this type.
|
||||
type PrivateKey = ed25519.PrivateKey
|
||||
|
||||
// GenerateKey generates a public/private key pair using entropy from rand.
|
||||
// If rand is nil, crypto/rand.Reader will be used.
|
||||
func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
|
||||
return ed25519.GenerateKey(rand)
|
||||
}
|
||||
|
||||
// NewKeyFromSeed calculates a private key from a seed. It will panic if
|
||||
// len(seed) is not SeedSize. This function is provided for interoperability
|
||||
// with RFC 8032. RFC 8032's private keys correspond to seeds in this
|
||||
// package.
|
||||
func NewKeyFromSeed(seed []byte) PrivateKey {
|
||||
return ed25519.NewKeyFromSeed(seed)
|
||||
}
|
||||
|
||||
// Sign signs the message with privateKey and returns a signature. It will
|
||||
// panic if len(privateKey) is not PrivateKeySize.
|
||||
func Sign(privateKey PrivateKey, message []byte) []byte {
|
||||
return ed25519.Sign(privateKey, message)
|
||||
}
|
||||
|
||||
// Verify reports whether sig is a valid signature of message by publicKey. It
|
||||
// will panic if len(publicKey) is not PublicKeySize.
|
||||
func Verify(publicKey PublicKey, message, sig []byte) bool {
|
||||
return ed25519.Verify(publicKey, message, sig)
|
||||
}
|
||||
1422
vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
generated
vendored
Normal file
1422
vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
generated
vendored
Normal file
File diff suppressed because it is too large
Load Diff
1793
vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
generated
vendored
Normal file
1793
vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
generated
vendored
Normal file
File diff suppressed because it is too large
Load Diff
224
vendor/golang.org/x/crypto/openpgp/armor/armor.go
generated
vendored
Normal file
224
vendor/golang.org/x/crypto/openpgp/armor/armor.go
generated
vendored
Normal file
@ -0,0 +1,224 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package armor implements OpenPGP ASCII Armor, see RFC 4880. OpenPGP Armor is
|
||||
// very similar to PEM except that it has an additional CRC checksum.
|
||||
package armor // import "golang.org/x/crypto/openpgp/armor"
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"encoding/base64"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"io"
|
||||
)
|
||||
|
||||
// A Block represents an OpenPGP armored structure.
|
||||
//
|
||||
// The encoded form is:
|
||||
// -----BEGIN Type-----
|
||||
// Headers
|
||||
//
|
||||
// base64-encoded Bytes
|
||||
// '=' base64 encoded checksum
|
||||
// -----END Type-----
|
||||
// where Headers is a possibly empty sequence of Key: Value lines.
|
||||
//
|
||||
// Since the armored data can be very large, this package presents a streaming
|
||||
// interface.
|
||||
type Block struct {
|
||||
Type string // The type, taken from the preamble (i.e. "PGP SIGNATURE").
|
||||
Header map[string]string // Optional headers.
|
||||
Body io.Reader // A Reader from which the contents can be read
|
||||
lReader lineReader
|
||||
oReader openpgpReader
|
||||
}
|
||||
|
||||
var ArmorCorrupt error = errors.StructuralError("armor invalid")
|
||||
|
||||
const crc24Init = 0xb704ce
|
||||
const crc24Poly = 0x1864cfb
|
||||
const crc24Mask = 0xffffff
|
||||
|
||||
// crc24 calculates the OpenPGP checksum as specified in RFC 4880, section 6.1
|
||||
func crc24(crc uint32, d []byte) uint32 {
|
||||
for _, b := range d {
|
||||
crc ^= uint32(b) << 16
|
||||
for i := 0; i < 8; i++ {
|
||||
crc <<= 1
|
||||
if crc&0x1000000 != 0 {
|
||||
crc ^= crc24Poly
|
||||
}
|
||||
}
|
||||
}
|
||||
return crc
|
||||
}
|
||||
|
||||
var armorStart = []byte("-----BEGIN ")
|
||||
var armorEnd = []byte("-----END ")
|
||||
var armorEndOfLine = []byte("-----")
|
||||
|
||||
// lineReader wraps a line based reader. It watches for the end of an armor
|
||||
// block and records the expected CRC value.
|
||||
type lineReader struct {
|
||||
in *bufio.Reader
|
||||
buf []byte
|
||||
eof bool
|
||||
crc uint32
|
||||
crcSet bool
|
||||
}
|
||||
|
||||
func (l *lineReader) Read(p []byte) (n int, err error) {
|
||||
if l.eof {
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
if len(l.buf) > 0 {
|
||||
n = copy(p, l.buf)
|
||||
l.buf = l.buf[n:]
|
||||
return
|
||||
}
|
||||
|
||||
line, isPrefix, err := l.in.ReadLine()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if isPrefix {
|
||||
return 0, ArmorCorrupt
|
||||
}
|
||||
|
||||
if bytes.HasPrefix(line, armorEnd) {
|
||||
l.eof = true
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
if len(line) == 5 && line[0] == '=' {
|
||||
// This is the checksum line
|
||||
var expectedBytes [3]byte
|
||||
var m int
|
||||
m, err = base64.StdEncoding.Decode(expectedBytes[0:], line[1:])
|
||||
if m != 3 || err != nil {
|
||||
return
|
||||
}
|
||||
l.crc = uint32(expectedBytes[0])<<16 |
|
||||
uint32(expectedBytes[1])<<8 |
|
||||
uint32(expectedBytes[2])
|
||||
|
||||
line, _, err = l.in.ReadLine()
|
||||
if err != nil && err != io.EOF {
|
||||
return
|
||||
}
|
||||
if !bytes.HasPrefix(line, armorEnd) {
|
||||
return 0, ArmorCorrupt
|
||||
}
|
||||
|
||||
l.eof = true
|
||||
l.crcSet = true
|
||||
return 0, io.EOF
|
||||
}
|
||||
|
||||
if len(line) > 96 {
|
||||
return 0, ArmorCorrupt
|
||||
}
|
||||
|
||||
n = copy(p, line)
|
||||
bytesToSave := len(line) - n
|
||||
if bytesToSave > 0 {
|
||||
if cap(l.buf) < bytesToSave {
|
||||
l.buf = make([]byte, 0, bytesToSave)
|
||||
}
|
||||
l.buf = l.buf[0:bytesToSave]
|
||||
copy(l.buf, line[n:])
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// openpgpReader passes Read calls to the underlying base64 decoder, but keeps
|
||||
// a running CRC of the resulting data and checks the CRC against the value
|
||||
// found by the lineReader at EOF.
|
||||
type openpgpReader struct {
|
||||
lReader *lineReader
|
||||
b64Reader io.Reader
|
||||
currentCRC uint32
|
||||
}
|
||||
|
||||
func (r *openpgpReader) Read(p []byte) (n int, err error) {
|
||||
n, err = r.b64Reader.Read(p)
|
||||
r.currentCRC = crc24(r.currentCRC, p[:n])
|
||||
|
||||
if err == io.EOF && r.lReader.crcSet && r.lReader.crc != uint32(r.currentCRC&crc24Mask) {
|
||||
return 0, ArmorCorrupt
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Decode reads a PGP armored block from the given Reader. It will ignore
|
||||
// leading garbage. If it doesn't find a block, it will return nil, io.EOF. The
|
||||
// given Reader is not usable after calling this function: an arbitrary amount
|
||||
// of data may have been read past the end of the block.
|
||||
func Decode(in io.Reader) (p *Block, err error) {
|
||||
r := bufio.NewReaderSize(in, 100)
|
||||
var line []byte
|
||||
ignoreNext := false
|
||||
|
||||
TryNextBlock:
|
||||
p = nil
|
||||
|
||||
// Skip leading garbage
|
||||
for {
|
||||
ignoreThis := ignoreNext
|
||||
line, ignoreNext, err = r.ReadLine()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if ignoreNext || ignoreThis {
|
||||
continue
|
||||
}
|
||||
line = bytes.TrimSpace(line)
|
||||
if len(line) > len(armorStart)+len(armorEndOfLine) && bytes.HasPrefix(line, armorStart) {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
p = new(Block)
|
||||
p.Type = string(line[len(armorStart) : len(line)-len(armorEndOfLine)])
|
||||
p.Header = make(map[string]string)
|
||||
nextIsContinuation := false
|
||||
var lastKey string
|
||||
|
||||
// Read headers
|
||||
for {
|
||||
isContinuation := nextIsContinuation
|
||||
line, nextIsContinuation, err = r.ReadLine()
|
||||
if err != nil {
|
||||
p = nil
|
||||
return
|
||||
}
|
||||
if isContinuation {
|
||||
p.Header[lastKey] += string(line)
|
||||
continue
|
||||
}
|
||||
line = bytes.TrimSpace(line)
|
||||
if len(line) == 0 {
|
||||
break
|
||||
}
|
||||
|
||||
i := bytes.Index(line, []byte(": "))
|
||||
if i == -1 {
|
||||
goto TryNextBlock
|
||||
}
|
||||
lastKey = string(line[:i])
|
||||
p.Header[lastKey] = string(line[i+2:])
|
||||
}
|
||||
|
||||
p.lReader.in = r
|
||||
p.oReader.currentCRC = crc24Init
|
||||
p.oReader.lReader = &p.lReader
|
||||
p.oReader.b64Reader = base64.NewDecoder(base64.StdEncoding, &p.lReader)
|
||||
p.Body = &p.oReader
|
||||
|
||||
return
|
||||
}
|
||||
160
vendor/golang.org/x/crypto/openpgp/armor/encode.go
generated
vendored
Normal file
160
vendor/golang.org/x/crypto/openpgp/armor/encode.go
generated
vendored
Normal file
@ -0,0 +1,160 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package armor
|
||||
|
||||
import (
|
||||
"encoding/base64"
|
||||
"io"
|
||||
)
|
||||
|
||||
var armorHeaderSep = []byte(": ")
|
||||
var blockEnd = []byte("\n=")
|
||||
var newline = []byte("\n")
|
||||
var armorEndOfLineOut = []byte("-----\n")
|
||||
|
||||
// writeSlices writes its arguments to the given Writer.
|
||||
func writeSlices(out io.Writer, slices ...[]byte) (err error) {
|
||||
for _, s := range slices {
|
||||
_, err = out.Write(s)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// lineBreaker breaks data across several lines, all of the same byte length
|
||||
// (except possibly the last). Lines are broken with a single '\n'.
|
||||
type lineBreaker struct {
|
||||
lineLength int
|
||||
line []byte
|
||||
used int
|
||||
out io.Writer
|
||||
haveWritten bool
|
||||
}
|
||||
|
||||
func newLineBreaker(out io.Writer, lineLength int) *lineBreaker {
|
||||
return &lineBreaker{
|
||||
lineLength: lineLength,
|
||||
line: make([]byte, lineLength),
|
||||
used: 0,
|
||||
out: out,
|
||||
}
|
||||
}
|
||||
|
||||
func (l *lineBreaker) Write(b []byte) (n int, err error) {
|
||||
n = len(b)
|
||||
|
||||
if n == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
if l.used == 0 && l.haveWritten {
|
||||
_, err = l.out.Write([]byte{'\n'})
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if l.used+len(b) < l.lineLength {
|
||||
l.used += copy(l.line[l.used:], b)
|
||||
return
|
||||
}
|
||||
|
||||
l.haveWritten = true
|
||||
_, err = l.out.Write(l.line[0:l.used])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
excess := l.lineLength - l.used
|
||||
l.used = 0
|
||||
|
||||
_, err = l.out.Write(b[0:excess])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = l.Write(b[excess:])
|
||||
return
|
||||
}
|
||||
|
||||
func (l *lineBreaker) Close() (err error) {
|
||||
if l.used > 0 {
|
||||
_, err = l.out.Write(l.line[0:l.used])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// encoding keeps track of a running CRC24 over the data which has been written
|
||||
// to it and outputs a OpenPGP checksum when closed, followed by an armor
|
||||
// trailer.
|
||||
//
|
||||
// It's built into a stack of io.Writers:
|
||||
// encoding -> base64 encoder -> lineBreaker -> out
|
||||
type encoding struct {
|
||||
out io.Writer
|
||||
breaker *lineBreaker
|
||||
b64 io.WriteCloser
|
||||
crc uint32
|
||||
blockType []byte
|
||||
}
|
||||
|
||||
func (e *encoding) Write(data []byte) (n int, err error) {
|
||||
e.crc = crc24(e.crc, data)
|
||||
return e.b64.Write(data)
|
||||
}
|
||||
|
||||
func (e *encoding) Close() (err error) {
|
||||
err = e.b64.Close()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
e.breaker.Close()
|
||||
|
||||
var checksumBytes [3]byte
|
||||
checksumBytes[0] = byte(e.crc >> 16)
|
||||
checksumBytes[1] = byte(e.crc >> 8)
|
||||
checksumBytes[2] = byte(e.crc)
|
||||
|
||||
var b64ChecksumBytes [4]byte
|
||||
base64.StdEncoding.Encode(b64ChecksumBytes[:], checksumBytes[:])
|
||||
|
||||
return writeSlices(e.out, blockEnd, b64ChecksumBytes[:], newline, armorEnd, e.blockType, armorEndOfLine)
|
||||
}
|
||||
|
||||
// Encode returns a WriteCloser which will encode the data written to it in
|
||||
// OpenPGP armor.
|
||||
func Encode(out io.Writer, blockType string, headers map[string]string) (w io.WriteCloser, err error) {
|
||||
bType := []byte(blockType)
|
||||
err = writeSlices(out, armorStart, bType, armorEndOfLineOut)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
for k, v := range headers {
|
||||
err = writeSlices(out, []byte(k), armorHeaderSep, []byte(v), newline)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
_, err = out.Write(newline)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
e := &encoding{
|
||||
out: out,
|
||||
breaker: newLineBreaker(out, 64),
|
||||
crc: crc24Init,
|
||||
blockType: bType,
|
||||
}
|
||||
e.b64 = base64.NewEncoder(base64.StdEncoding, e.breaker)
|
||||
return e, nil
|
||||
}
|
||||
59
vendor/golang.org/x/crypto/openpgp/canonical_text.go
generated
vendored
Normal file
59
vendor/golang.org/x/crypto/openpgp/canonical_text.go
generated
vendored
Normal file
@ -0,0 +1,59 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package openpgp
|
||||
|
||||
import "hash"
|
||||
|
||||
// NewCanonicalTextHash reformats text written to it into the canonical
|
||||
// form and then applies the hash h. See RFC 4880, section 5.2.1.
|
||||
func NewCanonicalTextHash(h hash.Hash) hash.Hash {
|
||||
return &canonicalTextHash{h, 0}
|
||||
}
|
||||
|
||||
type canonicalTextHash struct {
|
||||
h hash.Hash
|
||||
s int
|
||||
}
|
||||
|
||||
var newline = []byte{'\r', '\n'}
|
||||
|
||||
func (cth *canonicalTextHash) Write(buf []byte) (int, error) {
|
||||
start := 0
|
||||
|
||||
for i, c := range buf {
|
||||
switch cth.s {
|
||||
case 0:
|
||||
if c == '\r' {
|
||||
cth.s = 1
|
||||
} else if c == '\n' {
|
||||
cth.h.Write(buf[start:i])
|
||||
cth.h.Write(newline)
|
||||
start = i + 1
|
||||
}
|
||||
case 1:
|
||||
cth.s = 0
|
||||
}
|
||||
}
|
||||
|
||||
cth.h.Write(buf[start:])
|
||||
return len(buf), nil
|
||||
}
|
||||
|
||||
func (cth *canonicalTextHash) Sum(in []byte) []byte {
|
||||
return cth.h.Sum(in)
|
||||
}
|
||||
|
||||
func (cth *canonicalTextHash) Reset() {
|
||||
cth.h.Reset()
|
||||
cth.s = 0
|
||||
}
|
||||
|
||||
func (cth *canonicalTextHash) Size() int {
|
||||
return cth.h.Size()
|
||||
}
|
||||
|
||||
func (cth *canonicalTextHash) BlockSize() int {
|
||||
return cth.h.BlockSize()
|
||||
}
|
||||
124
vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go
generated
vendored
Normal file
124
vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go
generated
vendored
Normal file
@ -0,0 +1,124 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package elgamal implements ElGamal encryption, suitable for OpenPGP,
|
||||
// as specified in "A Public-Key Cryptosystem and a Signature Scheme Based on
|
||||
// Discrete Logarithms," IEEE Transactions on Information Theory, v. IT-31,
|
||||
// n. 4, 1985, pp. 469-472.
|
||||
//
|
||||
// This form of ElGamal embeds PKCS#1 v1.5 padding, which may make it
|
||||
// unsuitable for other protocols. RSA should be used in preference in any
|
||||
// case.
|
||||
package elgamal // import "golang.org/x/crypto/openpgp/elgamal"
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"crypto/subtle"
|
||||
"errors"
|
||||
"io"
|
||||
"math/big"
|
||||
)
|
||||
|
||||
// PublicKey represents an ElGamal public key.
|
||||
type PublicKey struct {
|
||||
G, P, Y *big.Int
|
||||
}
|
||||
|
||||
// PrivateKey represents an ElGamal private key.
|
||||
type PrivateKey struct {
|
||||
PublicKey
|
||||
X *big.Int
|
||||
}
|
||||
|
||||
// Encrypt encrypts the given message to the given public key. The result is a
|
||||
// pair of integers. Errors can result from reading random, or because msg is
|
||||
// too large to be encrypted to the public key.
|
||||
func Encrypt(random io.Reader, pub *PublicKey, msg []byte) (c1, c2 *big.Int, err error) {
|
||||
pLen := (pub.P.BitLen() + 7) / 8
|
||||
if len(msg) > pLen-11 {
|
||||
err = errors.New("elgamal: message too long")
|
||||
return
|
||||
}
|
||||
|
||||
// EM = 0x02 || PS || 0x00 || M
|
||||
em := make([]byte, pLen-1)
|
||||
em[0] = 2
|
||||
ps, mm := em[1:len(em)-len(msg)-1], em[len(em)-len(msg):]
|
||||
err = nonZeroRandomBytes(ps, random)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
em[len(em)-len(msg)-1] = 0
|
||||
copy(mm, msg)
|
||||
|
||||
m := new(big.Int).SetBytes(em)
|
||||
|
||||
k, err := rand.Int(random, pub.P)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
c1 = new(big.Int).Exp(pub.G, k, pub.P)
|
||||
s := new(big.Int).Exp(pub.Y, k, pub.P)
|
||||
c2 = s.Mul(s, m)
|
||||
c2.Mod(c2, pub.P)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Decrypt takes two integers, resulting from an ElGamal encryption, and
|
||||
// returns the plaintext of the message. An error can result only if the
|
||||
// ciphertext is invalid. Users should keep in mind that this is a padding
|
||||
// oracle and thus, if exposed to an adaptive chosen ciphertext attack, can
|
||||
// be used to break the cryptosystem. See ``Chosen Ciphertext Attacks
|
||||
// Against Protocols Based on the RSA Encryption Standard PKCS #1'', Daniel
|
||||
// Bleichenbacher, Advances in Cryptology (Crypto '98),
|
||||
func Decrypt(priv *PrivateKey, c1, c2 *big.Int) (msg []byte, err error) {
|
||||
s := new(big.Int).Exp(c1, priv.X, priv.P)
|
||||
if s.ModInverse(s, priv.P) == nil {
|
||||
return nil, errors.New("elgamal: invalid private key")
|
||||
}
|
||||
s.Mul(s, c2)
|
||||
s.Mod(s, priv.P)
|
||||
em := s.Bytes()
|
||||
|
||||
firstByteIsTwo := subtle.ConstantTimeByteEq(em[0], 2)
|
||||
|
||||
// The remainder of the plaintext must be a string of non-zero random
|
||||
// octets, followed by a 0, followed by the message.
|
||||
// lookingForIndex: 1 iff we are still looking for the zero.
|
||||
// index: the offset of the first zero byte.
|
||||
var lookingForIndex, index int
|
||||
lookingForIndex = 1
|
||||
|
||||
for i := 1; i < len(em); i++ {
|
||||
equals0 := subtle.ConstantTimeByteEq(em[i], 0)
|
||||
index = subtle.ConstantTimeSelect(lookingForIndex&equals0, i, index)
|
||||
lookingForIndex = subtle.ConstantTimeSelect(equals0, 0, lookingForIndex)
|
||||
}
|
||||
|
||||
if firstByteIsTwo != 1 || lookingForIndex != 0 || index < 9 {
|
||||
return nil, errors.New("elgamal: decryption error")
|
||||
}
|
||||
return em[index+1:], nil
|
||||
}
|
||||
|
||||
// nonZeroRandomBytes fills the given slice with non-zero random octets.
|
||||
func nonZeroRandomBytes(s []byte, rand io.Reader) (err error) {
|
||||
_, err = io.ReadFull(rand, s)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
for i := 0; i < len(s); i++ {
|
||||
for s[i] == 0 {
|
||||
_, err = io.ReadFull(rand, s[i:i+1])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
72
vendor/golang.org/x/crypto/openpgp/errors/errors.go
generated
vendored
Normal file
72
vendor/golang.org/x/crypto/openpgp/errors/errors.go
generated
vendored
Normal file
@ -0,0 +1,72 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package errors contains common error types for the OpenPGP packages.
|
||||
package errors // import "golang.org/x/crypto/openpgp/errors"
|
||||
|
||||
import (
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// A StructuralError is returned when OpenPGP data is found to be syntactically
|
||||
// invalid.
|
||||
type StructuralError string
|
||||
|
||||
func (s StructuralError) Error() string {
|
||||
return "openpgp: invalid data: " + string(s)
|
||||
}
|
||||
|
||||
// UnsupportedError indicates that, although the OpenPGP data is valid, it
|
||||
// makes use of currently unimplemented features.
|
||||
type UnsupportedError string
|
||||
|
||||
func (s UnsupportedError) Error() string {
|
||||
return "openpgp: unsupported feature: " + string(s)
|
||||
}
|
||||
|
||||
// InvalidArgumentError indicates that the caller is in error and passed an
|
||||
// incorrect value.
|
||||
type InvalidArgumentError string
|
||||
|
||||
func (i InvalidArgumentError) Error() string {
|
||||
return "openpgp: invalid argument: " + string(i)
|
||||
}
|
||||
|
||||
// SignatureError indicates that a syntactically valid signature failed to
|
||||
// validate.
|
||||
type SignatureError string
|
||||
|
||||
func (b SignatureError) Error() string {
|
||||
return "openpgp: invalid signature: " + string(b)
|
||||
}
|
||||
|
||||
type keyIncorrectError int
|
||||
|
||||
func (ki keyIncorrectError) Error() string {
|
||||
return "openpgp: incorrect key"
|
||||
}
|
||||
|
||||
var ErrKeyIncorrect error = keyIncorrectError(0)
|
||||
|
||||
type unknownIssuerError int
|
||||
|
||||
func (unknownIssuerError) Error() string {
|
||||
return "openpgp: signature made by unknown entity"
|
||||
}
|
||||
|
||||
var ErrUnknownIssuer error = unknownIssuerError(0)
|
||||
|
||||
type keyRevokedError int
|
||||
|
||||
func (keyRevokedError) Error() string {
|
||||
return "openpgp: signature made by revoked key"
|
||||
}
|
||||
|
||||
var ErrKeyRevoked error = keyRevokedError(0)
|
||||
|
||||
type UnknownPacketTypeError uint8
|
||||
|
||||
func (upte UnknownPacketTypeError) Error() string {
|
||||
return "openpgp: unknown packet type: " + strconv.Itoa(int(upte))
|
||||
}
|
||||
693
vendor/golang.org/x/crypto/openpgp/keys.go
generated
vendored
Normal file
693
vendor/golang.org/x/crypto/openpgp/keys.go
generated
vendored
Normal file
@ -0,0 +1,693 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package openpgp
|
||||
|
||||
import (
|
||||
"crypto/rsa"
|
||||
"io"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/armor"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/packet"
|
||||
)
|
||||
|
||||
// PublicKeyType is the armor type for a PGP public key.
|
||||
var PublicKeyType = "PGP PUBLIC KEY BLOCK"
|
||||
|
||||
// PrivateKeyType is the armor type for a PGP private key.
|
||||
var PrivateKeyType = "PGP PRIVATE KEY BLOCK"
|
||||
|
||||
// An Entity represents the components of an OpenPGP key: a primary public key
|
||||
// (which must be a signing key), one or more identities claimed by that key,
|
||||
// and zero or more subkeys, which may be encryption keys.
|
||||
type Entity struct {
|
||||
PrimaryKey *packet.PublicKey
|
||||
PrivateKey *packet.PrivateKey
|
||||
Identities map[string]*Identity // indexed by Identity.Name
|
||||
Revocations []*packet.Signature
|
||||
Subkeys []Subkey
|
||||
}
|
||||
|
||||
// An Identity represents an identity claimed by an Entity and zero or more
|
||||
// assertions by other entities about that claim.
|
||||
type Identity struct {
|
||||
Name string // by convention, has the form "Full Name (comment) <email@example.com>"
|
||||
UserId *packet.UserId
|
||||
SelfSignature *packet.Signature
|
||||
Signatures []*packet.Signature
|
||||
}
|
||||
|
||||
// A Subkey is an additional public key in an Entity. Subkeys can be used for
|
||||
// encryption.
|
||||
type Subkey struct {
|
||||
PublicKey *packet.PublicKey
|
||||
PrivateKey *packet.PrivateKey
|
||||
Sig *packet.Signature
|
||||
}
|
||||
|
||||
// A Key identifies a specific public key in an Entity. This is either the
|
||||
// Entity's primary key or a subkey.
|
||||
type Key struct {
|
||||
Entity *Entity
|
||||
PublicKey *packet.PublicKey
|
||||
PrivateKey *packet.PrivateKey
|
||||
SelfSignature *packet.Signature
|
||||
}
|
||||
|
||||
// A KeyRing provides access to public and private keys.
|
||||
type KeyRing interface {
|
||||
// KeysById returns the set of keys that have the given key id.
|
||||
KeysById(id uint64) []Key
|
||||
// KeysByIdAndUsage returns the set of keys with the given id
|
||||
// that also meet the key usage given by requiredUsage.
|
||||
// The requiredUsage is expressed as the bitwise-OR of
|
||||
// packet.KeyFlag* values.
|
||||
KeysByIdUsage(id uint64, requiredUsage byte) []Key
|
||||
// DecryptionKeys returns all private keys that are valid for
|
||||
// decryption.
|
||||
DecryptionKeys() []Key
|
||||
}
|
||||
|
||||
// primaryIdentity returns the Identity marked as primary or the first identity
|
||||
// if none are so marked.
|
||||
func (e *Entity) primaryIdentity() *Identity {
|
||||
var firstIdentity *Identity
|
||||
for _, ident := range e.Identities {
|
||||
if firstIdentity == nil {
|
||||
firstIdentity = ident
|
||||
}
|
||||
if ident.SelfSignature.IsPrimaryId != nil && *ident.SelfSignature.IsPrimaryId {
|
||||
return ident
|
||||
}
|
||||
}
|
||||
return firstIdentity
|
||||
}
|
||||
|
||||
// encryptionKey returns the best candidate Key for encrypting a message to the
|
||||
// given Entity.
|
||||
func (e *Entity) encryptionKey(now time.Time) (Key, bool) {
|
||||
candidateSubkey := -1
|
||||
|
||||
// Iterate the keys to find the newest key
|
||||
var maxTime time.Time
|
||||
for i, subkey := range e.Subkeys {
|
||||
if subkey.Sig.FlagsValid &&
|
||||
subkey.Sig.FlagEncryptCommunications &&
|
||||
subkey.PublicKey.PubKeyAlgo.CanEncrypt() &&
|
||||
!subkey.Sig.KeyExpired(now) &&
|
||||
(maxTime.IsZero() || subkey.Sig.CreationTime.After(maxTime)) {
|
||||
candidateSubkey = i
|
||||
maxTime = subkey.Sig.CreationTime
|
||||
}
|
||||
}
|
||||
|
||||
if candidateSubkey != -1 {
|
||||
subkey := e.Subkeys[candidateSubkey]
|
||||
return Key{e, subkey.PublicKey, subkey.PrivateKey, subkey.Sig}, true
|
||||
}
|
||||
|
||||
// If we don't have any candidate subkeys for encryption and
|
||||
// the primary key doesn't have any usage metadata then we
|
||||
// assume that the primary key is ok. Or, if the primary key is
|
||||
// marked as ok to encrypt to, then we can obviously use it.
|
||||
i := e.primaryIdentity()
|
||||
if !i.SelfSignature.FlagsValid || i.SelfSignature.FlagEncryptCommunications &&
|
||||
e.PrimaryKey.PubKeyAlgo.CanEncrypt() &&
|
||||
!i.SelfSignature.KeyExpired(now) {
|
||||
return Key{e, e.PrimaryKey, e.PrivateKey, i.SelfSignature}, true
|
||||
}
|
||||
|
||||
// This Entity appears to be signing only.
|
||||
return Key{}, false
|
||||
}
|
||||
|
||||
// signingKey return the best candidate Key for signing a message with this
|
||||
// Entity.
|
||||
func (e *Entity) signingKey(now time.Time) (Key, bool) {
|
||||
candidateSubkey := -1
|
||||
|
||||
for i, subkey := range e.Subkeys {
|
||||
if subkey.Sig.FlagsValid &&
|
||||
subkey.Sig.FlagSign &&
|
||||
subkey.PublicKey.PubKeyAlgo.CanSign() &&
|
||||
!subkey.Sig.KeyExpired(now) {
|
||||
candidateSubkey = i
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if candidateSubkey != -1 {
|
||||
subkey := e.Subkeys[candidateSubkey]
|
||||
return Key{e, subkey.PublicKey, subkey.PrivateKey, subkey.Sig}, true
|
||||
}
|
||||
|
||||
// If we have no candidate subkey then we assume that it's ok to sign
|
||||
// with the primary key.
|
||||
i := e.primaryIdentity()
|
||||
if !i.SelfSignature.FlagsValid || i.SelfSignature.FlagSign &&
|
||||
!i.SelfSignature.KeyExpired(now) {
|
||||
return Key{e, e.PrimaryKey, e.PrivateKey, i.SelfSignature}, true
|
||||
}
|
||||
|
||||
return Key{}, false
|
||||
}
|
||||
|
||||
// An EntityList contains one or more Entities.
|
||||
type EntityList []*Entity
|
||||
|
||||
// KeysById returns the set of keys that have the given key id.
|
||||
func (el EntityList) KeysById(id uint64) (keys []Key) {
|
||||
for _, e := range el {
|
||||
if e.PrimaryKey.KeyId == id {
|
||||
var selfSig *packet.Signature
|
||||
for _, ident := range e.Identities {
|
||||
if selfSig == nil {
|
||||
selfSig = ident.SelfSignature
|
||||
} else if ident.SelfSignature.IsPrimaryId != nil && *ident.SelfSignature.IsPrimaryId {
|
||||
selfSig = ident.SelfSignature
|
||||
break
|
||||
}
|
||||
}
|
||||
keys = append(keys, Key{e, e.PrimaryKey, e.PrivateKey, selfSig})
|
||||
}
|
||||
|
||||
for _, subKey := range e.Subkeys {
|
||||
if subKey.PublicKey.KeyId == id {
|
||||
keys = append(keys, Key{e, subKey.PublicKey, subKey.PrivateKey, subKey.Sig})
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// KeysByIdAndUsage returns the set of keys with the given id that also meet
|
||||
// the key usage given by requiredUsage. The requiredUsage is expressed as
|
||||
// the bitwise-OR of packet.KeyFlag* values.
|
||||
func (el EntityList) KeysByIdUsage(id uint64, requiredUsage byte) (keys []Key) {
|
||||
for _, key := range el.KeysById(id) {
|
||||
if len(key.Entity.Revocations) > 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
if key.SelfSignature.RevocationReason != nil {
|
||||
continue
|
||||
}
|
||||
|
||||
if key.SelfSignature.FlagsValid && requiredUsage != 0 {
|
||||
var usage byte
|
||||
if key.SelfSignature.FlagCertify {
|
||||
usage |= packet.KeyFlagCertify
|
||||
}
|
||||
if key.SelfSignature.FlagSign {
|
||||
usage |= packet.KeyFlagSign
|
||||
}
|
||||
if key.SelfSignature.FlagEncryptCommunications {
|
||||
usage |= packet.KeyFlagEncryptCommunications
|
||||
}
|
||||
if key.SelfSignature.FlagEncryptStorage {
|
||||
usage |= packet.KeyFlagEncryptStorage
|
||||
}
|
||||
if usage&requiredUsage != requiredUsage {
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
keys = append(keys, key)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// DecryptionKeys returns all private keys that are valid for decryption.
|
||||
func (el EntityList) DecryptionKeys() (keys []Key) {
|
||||
for _, e := range el {
|
||||
for _, subKey := range e.Subkeys {
|
||||
if subKey.PrivateKey != nil && (!subKey.Sig.FlagsValid || subKey.Sig.FlagEncryptStorage || subKey.Sig.FlagEncryptCommunications) {
|
||||
keys = append(keys, Key{e, subKey.PublicKey, subKey.PrivateKey, subKey.Sig})
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// ReadArmoredKeyRing reads one or more public/private keys from an armor keyring file.
|
||||
func ReadArmoredKeyRing(r io.Reader) (EntityList, error) {
|
||||
block, err := armor.Decode(r)
|
||||
if err == io.EOF {
|
||||
return nil, errors.InvalidArgumentError("no armored data found")
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if block.Type != PublicKeyType && block.Type != PrivateKeyType {
|
||||
return nil, errors.InvalidArgumentError("expected public or private key block, got: " + block.Type)
|
||||
}
|
||||
|
||||
return ReadKeyRing(block.Body)
|
||||
}
|
||||
|
||||
// ReadKeyRing reads one or more public/private keys. Unsupported keys are
|
||||
// ignored as long as at least a single valid key is found.
|
||||
func ReadKeyRing(r io.Reader) (el EntityList, err error) {
|
||||
packets := packet.NewReader(r)
|
||||
var lastUnsupportedError error
|
||||
|
||||
for {
|
||||
var e *Entity
|
||||
e, err = ReadEntity(packets)
|
||||
if err != nil {
|
||||
// TODO: warn about skipped unsupported/unreadable keys
|
||||
if _, ok := err.(errors.UnsupportedError); ok {
|
||||
lastUnsupportedError = err
|
||||
err = readToNextPublicKey(packets)
|
||||
} else if _, ok := err.(errors.StructuralError); ok {
|
||||
// Skip unreadable, badly-formatted keys
|
||||
lastUnsupportedError = err
|
||||
err = readToNextPublicKey(packets)
|
||||
}
|
||||
if err == io.EOF {
|
||||
err = nil
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
el = nil
|
||||
break
|
||||
}
|
||||
} else {
|
||||
el = append(el, e)
|
||||
}
|
||||
}
|
||||
|
||||
if len(el) == 0 && err == nil {
|
||||
err = lastUnsupportedError
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// readToNextPublicKey reads packets until the start of the entity and leaves
|
||||
// the first packet of the new entity in the Reader.
|
||||
func readToNextPublicKey(packets *packet.Reader) (err error) {
|
||||
var p packet.Packet
|
||||
for {
|
||||
p, err = packets.Next()
|
||||
if err == io.EOF {
|
||||
return
|
||||
} else if err != nil {
|
||||
if _, ok := err.(errors.UnsupportedError); ok {
|
||||
err = nil
|
||||
continue
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
if pk, ok := p.(*packet.PublicKey); ok && !pk.IsSubkey {
|
||||
packets.Unread(p)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ReadEntity reads an entity (public key, identities, subkeys etc) from the
|
||||
// given Reader.
|
||||
func ReadEntity(packets *packet.Reader) (*Entity, error) {
|
||||
e := new(Entity)
|
||||
e.Identities = make(map[string]*Identity)
|
||||
|
||||
p, err := packets.Next()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var ok bool
|
||||
if e.PrimaryKey, ok = p.(*packet.PublicKey); !ok {
|
||||
if e.PrivateKey, ok = p.(*packet.PrivateKey); !ok {
|
||||
packets.Unread(p)
|
||||
return nil, errors.StructuralError("first packet was not a public/private key")
|
||||
}
|
||||
e.PrimaryKey = &e.PrivateKey.PublicKey
|
||||
}
|
||||
|
||||
if !e.PrimaryKey.PubKeyAlgo.CanSign() {
|
||||
return nil, errors.StructuralError("primary key cannot be used for signatures")
|
||||
}
|
||||
|
||||
var revocations []*packet.Signature
|
||||
EachPacket:
|
||||
for {
|
||||
p, err := packets.Next()
|
||||
if err == io.EOF {
|
||||
break
|
||||
} else if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
switch pkt := p.(type) {
|
||||
case *packet.UserId:
|
||||
if err := addUserID(e, packets, pkt); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
case *packet.Signature:
|
||||
if pkt.SigType == packet.SigTypeKeyRevocation {
|
||||
revocations = append(revocations, pkt)
|
||||
} else if pkt.SigType == packet.SigTypeDirectSignature {
|
||||
// TODO: RFC4880 5.2.1 permits signatures
|
||||
// directly on keys (eg. to bind additional
|
||||
// revocation keys).
|
||||
}
|
||||
// Else, ignoring the signature as it does not follow anything
|
||||
// we would know to attach it to.
|
||||
case *packet.PrivateKey:
|
||||
if pkt.IsSubkey == false {
|
||||
packets.Unread(p)
|
||||
break EachPacket
|
||||
}
|
||||
err = addSubkey(e, packets, &pkt.PublicKey, pkt)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
case *packet.PublicKey:
|
||||
if pkt.IsSubkey == false {
|
||||
packets.Unread(p)
|
||||
break EachPacket
|
||||
}
|
||||
err = addSubkey(e, packets, pkt, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
default:
|
||||
// we ignore unknown packets
|
||||
}
|
||||
}
|
||||
|
||||
if len(e.Identities) == 0 {
|
||||
return nil, errors.StructuralError("entity without any identities")
|
||||
}
|
||||
|
||||
for _, revocation := range revocations {
|
||||
err = e.PrimaryKey.VerifyRevocationSignature(revocation)
|
||||
if err == nil {
|
||||
e.Revocations = append(e.Revocations, revocation)
|
||||
} else {
|
||||
// TODO: RFC 4880 5.2.3.15 defines revocation keys.
|
||||
return nil, errors.StructuralError("revocation signature signed by alternate key")
|
||||
}
|
||||
}
|
||||
|
||||
return e, nil
|
||||
}
|
||||
|
||||
func addUserID(e *Entity, packets *packet.Reader, pkt *packet.UserId) error {
|
||||
// Make a new Identity object, that we might wind up throwing away.
|
||||
// We'll only add it if we get a valid self-signature over this
|
||||
// userID.
|
||||
identity := new(Identity)
|
||||
identity.Name = pkt.Id
|
||||
identity.UserId = pkt
|
||||
|
||||
for {
|
||||
p, err := packets.Next()
|
||||
if err == io.EOF {
|
||||
break
|
||||
} else if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
sig, ok := p.(*packet.Signature)
|
||||
if !ok {
|
||||
packets.Unread(p)
|
||||
break
|
||||
}
|
||||
|
||||
if (sig.SigType == packet.SigTypePositiveCert || sig.SigType == packet.SigTypeGenericCert) && sig.IssuerKeyId != nil && *sig.IssuerKeyId == e.PrimaryKey.KeyId {
|
||||
if err = e.PrimaryKey.VerifyUserIdSignature(pkt.Id, e.PrimaryKey, sig); err != nil {
|
||||
return errors.StructuralError("user ID self-signature invalid: " + err.Error())
|
||||
}
|
||||
identity.SelfSignature = sig
|
||||
e.Identities[pkt.Id] = identity
|
||||
} else {
|
||||
identity.Signatures = append(identity.Signatures, sig)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func addSubkey(e *Entity, packets *packet.Reader, pub *packet.PublicKey, priv *packet.PrivateKey) error {
|
||||
var subKey Subkey
|
||||
subKey.PublicKey = pub
|
||||
subKey.PrivateKey = priv
|
||||
|
||||
for {
|
||||
p, err := packets.Next()
|
||||
if err == io.EOF {
|
||||
break
|
||||
} else if err != nil {
|
||||
return errors.StructuralError("subkey signature invalid: " + err.Error())
|
||||
}
|
||||
|
||||
sig, ok := p.(*packet.Signature)
|
||||
if !ok {
|
||||
packets.Unread(p)
|
||||
break
|
||||
}
|
||||
|
||||
if sig.SigType != packet.SigTypeSubkeyBinding && sig.SigType != packet.SigTypeSubkeyRevocation {
|
||||
return errors.StructuralError("subkey signature with wrong type")
|
||||
}
|
||||
|
||||
if err := e.PrimaryKey.VerifyKeySignature(subKey.PublicKey, sig); err != nil {
|
||||
return errors.StructuralError("subkey signature invalid: " + err.Error())
|
||||
}
|
||||
|
||||
switch sig.SigType {
|
||||
case packet.SigTypeSubkeyRevocation:
|
||||
subKey.Sig = sig
|
||||
case packet.SigTypeSubkeyBinding:
|
||||
|
||||
if shouldReplaceSubkeySig(subKey.Sig, sig) {
|
||||
subKey.Sig = sig
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if subKey.Sig == nil {
|
||||
return errors.StructuralError("subkey packet not followed by signature")
|
||||
}
|
||||
|
||||
e.Subkeys = append(e.Subkeys, subKey)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func shouldReplaceSubkeySig(existingSig, potentialNewSig *packet.Signature) bool {
|
||||
if potentialNewSig == nil {
|
||||
return false
|
||||
}
|
||||
|
||||
if existingSig == nil {
|
||||
return true
|
||||
}
|
||||
|
||||
if existingSig.SigType == packet.SigTypeSubkeyRevocation {
|
||||
return false // never override a revocation signature
|
||||
}
|
||||
|
||||
return potentialNewSig.CreationTime.After(existingSig.CreationTime)
|
||||
}
|
||||
|
||||
const defaultRSAKeyBits = 2048
|
||||
|
||||
// NewEntity returns an Entity that contains a fresh RSA/RSA keypair with a
|
||||
// single identity composed of the given full name, comment and email, any of
|
||||
// which may be empty but must not contain any of "()<>\x00".
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func NewEntity(name, comment, email string, config *packet.Config) (*Entity, error) {
|
||||
creationTime := config.Now()
|
||||
|
||||
bits := defaultRSAKeyBits
|
||||
if config != nil && config.RSABits != 0 {
|
||||
bits = config.RSABits
|
||||
}
|
||||
|
||||
uid := packet.NewUserId(name, comment, email)
|
||||
if uid == nil {
|
||||
return nil, errors.InvalidArgumentError("user id field contained invalid characters")
|
||||
}
|
||||
signingPriv, err := rsa.GenerateKey(config.Random(), bits)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
encryptingPriv, err := rsa.GenerateKey(config.Random(), bits)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
e := &Entity{
|
||||
PrimaryKey: packet.NewRSAPublicKey(creationTime, &signingPriv.PublicKey),
|
||||
PrivateKey: packet.NewRSAPrivateKey(creationTime, signingPriv),
|
||||
Identities: make(map[string]*Identity),
|
||||
}
|
||||
isPrimaryId := true
|
||||
e.Identities[uid.Id] = &Identity{
|
||||
Name: uid.Id,
|
||||
UserId: uid,
|
||||
SelfSignature: &packet.Signature{
|
||||
CreationTime: creationTime,
|
||||
SigType: packet.SigTypePositiveCert,
|
||||
PubKeyAlgo: packet.PubKeyAlgoRSA,
|
||||
Hash: config.Hash(),
|
||||
IsPrimaryId: &isPrimaryId,
|
||||
FlagsValid: true,
|
||||
FlagSign: true,
|
||||
FlagCertify: true,
|
||||
IssuerKeyId: &e.PrimaryKey.KeyId,
|
||||
},
|
||||
}
|
||||
err = e.Identities[uid.Id].SelfSignature.SignUserId(uid.Id, e.PrimaryKey, e.PrivateKey, config)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// If the user passes in a DefaultHash via packet.Config,
|
||||
// set the PreferredHash for the SelfSignature.
|
||||
if config != nil && config.DefaultHash != 0 {
|
||||
e.Identities[uid.Id].SelfSignature.PreferredHash = []uint8{hashToHashId(config.DefaultHash)}
|
||||
}
|
||||
|
||||
// Likewise for DefaultCipher.
|
||||
if config != nil && config.DefaultCipher != 0 {
|
||||
e.Identities[uid.Id].SelfSignature.PreferredSymmetric = []uint8{uint8(config.DefaultCipher)}
|
||||
}
|
||||
|
||||
e.Subkeys = make([]Subkey, 1)
|
||||
e.Subkeys[0] = Subkey{
|
||||
PublicKey: packet.NewRSAPublicKey(creationTime, &encryptingPriv.PublicKey),
|
||||
PrivateKey: packet.NewRSAPrivateKey(creationTime, encryptingPriv),
|
||||
Sig: &packet.Signature{
|
||||
CreationTime: creationTime,
|
||||
SigType: packet.SigTypeSubkeyBinding,
|
||||
PubKeyAlgo: packet.PubKeyAlgoRSA,
|
||||
Hash: config.Hash(),
|
||||
FlagsValid: true,
|
||||
FlagEncryptStorage: true,
|
||||
FlagEncryptCommunications: true,
|
||||
IssuerKeyId: &e.PrimaryKey.KeyId,
|
||||
},
|
||||
}
|
||||
e.Subkeys[0].PublicKey.IsSubkey = true
|
||||
e.Subkeys[0].PrivateKey.IsSubkey = true
|
||||
err = e.Subkeys[0].Sig.SignKey(e.Subkeys[0].PublicKey, e.PrivateKey, config)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return e, nil
|
||||
}
|
||||
|
||||
// SerializePrivate serializes an Entity, including private key material, but
|
||||
// excluding signatures from other entities, to the given Writer.
|
||||
// Identities and subkeys are re-signed in case they changed since NewEntry.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func (e *Entity) SerializePrivate(w io.Writer, config *packet.Config) (err error) {
|
||||
err = e.PrivateKey.Serialize(w)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
for _, ident := range e.Identities {
|
||||
err = ident.UserId.Serialize(w)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = ident.SelfSignature.SignUserId(ident.UserId.Id, e.PrimaryKey, e.PrivateKey, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = ident.SelfSignature.Serialize(w)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
for _, subkey := range e.Subkeys {
|
||||
err = subkey.PrivateKey.Serialize(w)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = subkey.Sig.SignKey(subkey.PublicKey, e.PrivateKey, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = subkey.Sig.Serialize(w)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Serialize writes the public part of the given Entity to w, including
|
||||
// signatures from other entities. No private key material will be output.
|
||||
func (e *Entity) Serialize(w io.Writer) error {
|
||||
err := e.PrimaryKey.Serialize(w)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, ident := range e.Identities {
|
||||
err = ident.UserId.Serialize(w)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = ident.SelfSignature.Serialize(w)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, sig := range ident.Signatures {
|
||||
err = sig.Serialize(w)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
for _, subkey := range e.Subkeys {
|
||||
err = subkey.PublicKey.Serialize(w)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = subkey.Sig.Serialize(w)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SignIdentity adds a signature to e, from signer, attesting that identity is
|
||||
// associated with e. The provided identity must already be an element of
|
||||
// e.Identities and the private key of signer must have been decrypted if
|
||||
// necessary.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func (e *Entity) SignIdentity(identity string, signer *Entity, config *packet.Config) error {
|
||||
if signer.PrivateKey == nil {
|
||||
return errors.InvalidArgumentError("signing Entity must have a private key")
|
||||
}
|
||||
if signer.PrivateKey.Encrypted {
|
||||
return errors.InvalidArgumentError("signing Entity's private key must be decrypted")
|
||||
}
|
||||
ident, ok := e.Identities[identity]
|
||||
if !ok {
|
||||
return errors.InvalidArgumentError("given identity string not found in Entity")
|
||||
}
|
||||
|
||||
sig := &packet.Signature{
|
||||
SigType: packet.SigTypeGenericCert,
|
||||
PubKeyAlgo: signer.PrivateKey.PubKeyAlgo,
|
||||
Hash: config.Hash(),
|
||||
CreationTime: config.Now(),
|
||||
IssuerKeyId: &signer.PrivateKey.KeyId,
|
||||
}
|
||||
if err := sig.SignUserId(identity, e.PrimaryKey, signer.PrivateKey, config); err != nil {
|
||||
return err
|
||||
}
|
||||
ident.Signatures = append(ident.Signatures, sig)
|
||||
return nil
|
||||
}
|
||||
123
vendor/golang.org/x/crypto/openpgp/packet/compressed.go
generated
vendored
Normal file
123
vendor/golang.org/x/crypto/openpgp/packet/compressed.go
generated
vendored
Normal file
@ -0,0 +1,123 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"compress/bzip2"
|
||||
"compress/flate"
|
||||
"compress/zlib"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"io"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// Compressed represents a compressed OpenPGP packet. The decompressed contents
|
||||
// will contain more OpenPGP packets. See RFC 4880, section 5.6.
|
||||
type Compressed struct {
|
||||
Body io.Reader
|
||||
}
|
||||
|
||||
const (
|
||||
NoCompression = flate.NoCompression
|
||||
BestSpeed = flate.BestSpeed
|
||||
BestCompression = flate.BestCompression
|
||||
DefaultCompression = flate.DefaultCompression
|
||||
)
|
||||
|
||||
// CompressionConfig contains compressor configuration settings.
|
||||
type CompressionConfig struct {
|
||||
// Level is the compression level to use. It must be set to
|
||||
// between -1 and 9, with -1 causing the compressor to use the
|
||||
// default compression level, 0 causing the compressor to use
|
||||
// no compression and 1 to 9 representing increasing (better,
|
||||
// slower) compression levels. If Level is less than -1 or
|
||||
// more then 9, a non-nil error will be returned during
|
||||
// encryption. See the constants above for convenient common
|
||||
// settings for Level.
|
||||
Level int
|
||||
}
|
||||
|
||||
func (c *Compressed) parse(r io.Reader) error {
|
||||
var buf [1]byte
|
||||
_, err := readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
switch buf[0] {
|
||||
case 1:
|
||||
c.Body = flate.NewReader(r)
|
||||
case 2:
|
||||
c.Body, err = zlib.NewReader(r)
|
||||
case 3:
|
||||
c.Body = bzip2.NewReader(r)
|
||||
default:
|
||||
err = errors.UnsupportedError("unknown compression algorithm: " + strconv.Itoa(int(buf[0])))
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
// compressedWriterCloser represents the serialized compression stream
|
||||
// header and the compressor. Its Close() method ensures that both the
|
||||
// compressor and serialized stream header are closed. Its Write()
|
||||
// method writes to the compressor.
|
||||
type compressedWriteCloser struct {
|
||||
sh io.Closer // Stream Header
|
||||
c io.WriteCloser // Compressor
|
||||
}
|
||||
|
||||
func (cwc compressedWriteCloser) Write(p []byte) (int, error) {
|
||||
return cwc.c.Write(p)
|
||||
}
|
||||
|
||||
func (cwc compressedWriteCloser) Close() (err error) {
|
||||
err = cwc.c.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return cwc.sh.Close()
|
||||
}
|
||||
|
||||
// SerializeCompressed serializes a compressed data packet to w and
|
||||
// returns a WriteCloser to which the literal data packets themselves
|
||||
// can be written and which MUST be closed on completion. If cc is
|
||||
// nil, sensible defaults will be used to configure the compression
|
||||
// algorithm.
|
||||
func SerializeCompressed(w io.WriteCloser, algo CompressionAlgo, cc *CompressionConfig) (literaldata io.WriteCloser, err error) {
|
||||
compressed, err := serializeStreamHeader(w, packetTypeCompressed)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = compressed.Write([]byte{uint8(algo)})
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
level := DefaultCompression
|
||||
if cc != nil {
|
||||
level = cc.Level
|
||||
}
|
||||
|
||||
var compressor io.WriteCloser
|
||||
switch algo {
|
||||
case CompressionZIP:
|
||||
compressor, err = flate.NewWriter(compressed, level)
|
||||
case CompressionZLIB:
|
||||
compressor, err = zlib.NewWriterLevel(compressed, level)
|
||||
default:
|
||||
s := strconv.Itoa(int(algo))
|
||||
err = errors.UnsupportedError("Unsupported compression algorithm: " + s)
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
literaldata = compressedWriteCloser{compressed, compressor}
|
||||
|
||||
return
|
||||
}
|
||||
91
vendor/golang.org/x/crypto/openpgp/packet/config.go
generated
vendored
Normal file
91
vendor/golang.org/x/crypto/openpgp/packet/config.go
generated
vendored
Normal file
@ -0,0 +1,91 @@
|
||||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/rand"
|
||||
"io"
|
||||
"time"
|
||||
)
|
||||
|
||||
// Config collects a number of parameters along with sensible defaults.
|
||||
// A nil *Config is valid and results in all default values.
|
||||
type Config struct {
|
||||
// Rand provides the source of entropy.
|
||||
// If nil, the crypto/rand Reader is used.
|
||||
Rand io.Reader
|
||||
// DefaultHash is the default hash function to be used.
|
||||
// If zero, SHA-256 is used.
|
||||
DefaultHash crypto.Hash
|
||||
// DefaultCipher is the cipher to be used.
|
||||
// If zero, AES-128 is used.
|
||||
DefaultCipher CipherFunction
|
||||
// Time returns the current time as the number of seconds since the
|
||||
// epoch. If Time is nil, time.Now is used.
|
||||
Time func() time.Time
|
||||
// DefaultCompressionAlgo is the compression algorithm to be
|
||||
// applied to the plaintext before encryption. If zero, no
|
||||
// compression is done.
|
||||
DefaultCompressionAlgo CompressionAlgo
|
||||
// CompressionConfig configures the compression settings.
|
||||
CompressionConfig *CompressionConfig
|
||||
// S2KCount is only used for symmetric encryption. It
|
||||
// determines the strength of the passphrase stretching when
|
||||
// the said passphrase is hashed to produce a key. S2KCount
|
||||
// should be between 1024 and 65011712, inclusive. If Config
|
||||
// is nil or S2KCount is 0, the value 65536 used. Not all
|
||||
// values in the above range can be represented. S2KCount will
|
||||
// be rounded up to the next representable value if it cannot
|
||||
// be encoded exactly. When set, it is strongly encrouraged to
|
||||
// use a value that is at least 65536. See RFC 4880 Section
|
||||
// 3.7.1.3.
|
||||
S2KCount int
|
||||
// RSABits is the number of bits in new RSA keys made with NewEntity.
|
||||
// If zero, then 2048 bit keys are created.
|
||||
RSABits int
|
||||
}
|
||||
|
||||
func (c *Config) Random() io.Reader {
|
||||
if c == nil || c.Rand == nil {
|
||||
return rand.Reader
|
||||
}
|
||||
return c.Rand
|
||||
}
|
||||
|
||||
func (c *Config) Hash() crypto.Hash {
|
||||
if c == nil || uint(c.DefaultHash) == 0 {
|
||||
return crypto.SHA256
|
||||
}
|
||||
return c.DefaultHash
|
||||
}
|
||||
|
||||
func (c *Config) Cipher() CipherFunction {
|
||||
if c == nil || uint8(c.DefaultCipher) == 0 {
|
||||
return CipherAES128
|
||||
}
|
||||
return c.DefaultCipher
|
||||
}
|
||||
|
||||
func (c *Config) Now() time.Time {
|
||||
if c == nil || c.Time == nil {
|
||||
return time.Now()
|
||||
}
|
||||
return c.Time()
|
||||
}
|
||||
|
||||
func (c *Config) Compression() CompressionAlgo {
|
||||
if c == nil {
|
||||
return CompressionNone
|
||||
}
|
||||
return c.DefaultCompressionAlgo
|
||||
}
|
||||
|
||||
func (c *Config) PasswordHashIterations() int {
|
||||
if c == nil || c.S2KCount == 0 {
|
||||
return 0
|
||||
}
|
||||
return c.S2KCount
|
||||
}
|
||||
208
vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go
generated
vendored
Normal file
208
vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go
generated
vendored
Normal file
@ -0,0 +1,208 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/rsa"
|
||||
"encoding/binary"
|
||||
"io"
|
||||
"math/big"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/crypto/openpgp/elgamal"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
)
|
||||
|
||||
const encryptedKeyVersion = 3
|
||||
|
||||
// EncryptedKey represents a public-key encrypted session key. See RFC 4880,
|
||||
// section 5.1.
|
||||
type EncryptedKey struct {
|
||||
KeyId uint64
|
||||
Algo PublicKeyAlgorithm
|
||||
CipherFunc CipherFunction // only valid after a successful Decrypt
|
||||
Key []byte // only valid after a successful Decrypt
|
||||
|
||||
encryptedMPI1, encryptedMPI2 parsedMPI
|
||||
}
|
||||
|
||||
func (e *EncryptedKey) parse(r io.Reader) (err error) {
|
||||
var buf [10]byte
|
||||
_, err = readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] != encryptedKeyVersion {
|
||||
return errors.UnsupportedError("unknown EncryptedKey version " + strconv.Itoa(int(buf[0])))
|
||||
}
|
||||
e.KeyId = binary.BigEndian.Uint64(buf[1:9])
|
||||
e.Algo = PublicKeyAlgorithm(buf[9])
|
||||
switch e.Algo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly:
|
||||
e.encryptedMPI1.bytes, e.encryptedMPI1.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
case PubKeyAlgoElGamal:
|
||||
e.encryptedMPI1.bytes, e.encryptedMPI1.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
e.encryptedMPI2.bytes, e.encryptedMPI2.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
_, err = consumeAll(r)
|
||||
return
|
||||
}
|
||||
|
||||
func checksumKeyMaterial(key []byte) uint16 {
|
||||
var checksum uint16
|
||||
for _, v := range key {
|
||||
checksum += uint16(v)
|
||||
}
|
||||
return checksum
|
||||
}
|
||||
|
||||
// Decrypt decrypts an encrypted session key with the given private key. The
|
||||
// private key must have been decrypted first.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func (e *EncryptedKey) Decrypt(priv *PrivateKey, config *Config) error {
|
||||
var err error
|
||||
var b []byte
|
||||
|
||||
// TODO(agl): use session key decryption routines here to avoid
|
||||
// padding oracle attacks.
|
||||
switch priv.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly:
|
||||
// Supports both *rsa.PrivateKey and crypto.Decrypter
|
||||
k := priv.PrivateKey.(crypto.Decrypter)
|
||||
b, err = k.Decrypt(config.Random(), padToKeySize(k.Public().(*rsa.PublicKey), e.encryptedMPI1.bytes), nil)
|
||||
case PubKeyAlgoElGamal:
|
||||
c1 := new(big.Int).SetBytes(e.encryptedMPI1.bytes)
|
||||
c2 := new(big.Int).SetBytes(e.encryptedMPI2.bytes)
|
||||
b, err = elgamal.Decrypt(priv.PrivateKey.(*elgamal.PrivateKey), c1, c2)
|
||||
default:
|
||||
err = errors.InvalidArgumentError("cannot decrypted encrypted session key with private key of type " + strconv.Itoa(int(priv.PubKeyAlgo)))
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
e.CipherFunc = CipherFunction(b[0])
|
||||
e.Key = b[1 : len(b)-2]
|
||||
expectedChecksum := uint16(b[len(b)-2])<<8 | uint16(b[len(b)-1])
|
||||
checksum := checksumKeyMaterial(e.Key)
|
||||
if checksum != expectedChecksum {
|
||||
return errors.StructuralError("EncryptedKey checksum incorrect")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Serialize writes the encrypted key packet, e, to w.
|
||||
func (e *EncryptedKey) Serialize(w io.Writer) error {
|
||||
var mpiLen int
|
||||
switch e.Algo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly:
|
||||
mpiLen = 2 + len(e.encryptedMPI1.bytes)
|
||||
case PubKeyAlgoElGamal:
|
||||
mpiLen = 2 + len(e.encryptedMPI1.bytes) + 2 + len(e.encryptedMPI2.bytes)
|
||||
default:
|
||||
return errors.InvalidArgumentError("don't know how to serialize encrypted key type " + strconv.Itoa(int(e.Algo)))
|
||||
}
|
||||
|
||||
serializeHeader(w, packetTypeEncryptedKey, 1 /* version */ +8 /* key id */ +1 /* algo */ +mpiLen)
|
||||
|
||||
w.Write([]byte{encryptedKeyVersion})
|
||||
binary.Write(w, binary.BigEndian, e.KeyId)
|
||||
w.Write([]byte{byte(e.Algo)})
|
||||
|
||||
switch e.Algo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly:
|
||||
writeMPIs(w, e.encryptedMPI1)
|
||||
case PubKeyAlgoElGamal:
|
||||
writeMPIs(w, e.encryptedMPI1, e.encryptedMPI2)
|
||||
default:
|
||||
panic("internal error")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// SerializeEncryptedKey serializes an encrypted key packet to w that contains
|
||||
// key, encrypted to pub.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func SerializeEncryptedKey(w io.Writer, pub *PublicKey, cipherFunc CipherFunction, key []byte, config *Config) error {
|
||||
var buf [10]byte
|
||||
buf[0] = encryptedKeyVersion
|
||||
binary.BigEndian.PutUint64(buf[1:9], pub.KeyId)
|
||||
buf[9] = byte(pub.PubKeyAlgo)
|
||||
|
||||
keyBlock := make([]byte, 1 /* cipher type */ +len(key)+2 /* checksum */)
|
||||
keyBlock[0] = byte(cipherFunc)
|
||||
copy(keyBlock[1:], key)
|
||||
checksum := checksumKeyMaterial(key)
|
||||
keyBlock[1+len(key)] = byte(checksum >> 8)
|
||||
keyBlock[1+len(key)+1] = byte(checksum)
|
||||
|
||||
switch pub.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly:
|
||||
return serializeEncryptedKeyRSA(w, config.Random(), buf, pub.PublicKey.(*rsa.PublicKey), keyBlock)
|
||||
case PubKeyAlgoElGamal:
|
||||
return serializeEncryptedKeyElGamal(w, config.Random(), buf, pub.PublicKey.(*elgamal.PublicKey), keyBlock)
|
||||
case PubKeyAlgoDSA, PubKeyAlgoRSASignOnly:
|
||||
return errors.InvalidArgumentError("cannot encrypt to public key of type " + strconv.Itoa(int(pub.PubKeyAlgo)))
|
||||
}
|
||||
|
||||
return errors.UnsupportedError("encrypting a key to public key of type " + strconv.Itoa(int(pub.PubKeyAlgo)))
|
||||
}
|
||||
|
||||
func serializeEncryptedKeyRSA(w io.Writer, rand io.Reader, header [10]byte, pub *rsa.PublicKey, keyBlock []byte) error {
|
||||
cipherText, err := rsa.EncryptPKCS1v15(rand, pub, keyBlock)
|
||||
if err != nil {
|
||||
return errors.InvalidArgumentError("RSA encryption failed: " + err.Error())
|
||||
}
|
||||
|
||||
packetLen := 10 /* header length */ + 2 /* mpi size */ + len(cipherText)
|
||||
|
||||
err = serializeHeader(w, packetTypeEncryptedKey, packetLen)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = w.Write(header[:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return writeMPI(w, 8*uint16(len(cipherText)), cipherText)
|
||||
}
|
||||
|
||||
func serializeEncryptedKeyElGamal(w io.Writer, rand io.Reader, header [10]byte, pub *elgamal.PublicKey, keyBlock []byte) error {
|
||||
c1, c2, err := elgamal.Encrypt(rand, pub, keyBlock)
|
||||
if err != nil {
|
||||
return errors.InvalidArgumentError("ElGamal encryption failed: " + err.Error())
|
||||
}
|
||||
|
||||
packetLen := 10 /* header length */
|
||||
packetLen += 2 /* mpi size */ + (c1.BitLen()+7)/8
|
||||
packetLen += 2 /* mpi size */ + (c2.BitLen()+7)/8
|
||||
|
||||
err = serializeHeader(w, packetTypeEncryptedKey, packetLen)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = w.Write(header[:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = writeBig(w, c1)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return writeBig(w, c2)
|
||||
}
|
||||
89
vendor/golang.org/x/crypto/openpgp/packet/literal.go
generated
vendored
Normal file
89
vendor/golang.org/x/crypto/openpgp/packet/literal.go
generated
vendored
Normal file
@ -0,0 +1,89 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"io"
|
||||
)
|
||||
|
||||
// LiteralData represents an encrypted file. See RFC 4880, section 5.9.
|
||||
type LiteralData struct {
|
||||
IsBinary bool
|
||||
FileName string
|
||||
Time uint32 // Unix epoch time. Either creation time or modification time. 0 means undefined.
|
||||
Body io.Reader
|
||||
}
|
||||
|
||||
// ForEyesOnly returns whether the contents of the LiteralData have been marked
|
||||
// as especially sensitive.
|
||||
func (l *LiteralData) ForEyesOnly() bool {
|
||||
return l.FileName == "_CONSOLE"
|
||||
}
|
||||
|
||||
func (l *LiteralData) parse(r io.Reader) (err error) {
|
||||
var buf [256]byte
|
||||
|
||||
_, err = readFull(r, buf[:2])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
l.IsBinary = buf[0] == 'b'
|
||||
fileNameLen := int(buf[1])
|
||||
|
||||
_, err = readFull(r, buf[:fileNameLen])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
l.FileName = string(buf[:fileNameLen])
|
||||
|
||||
_, err = readFull(r, buf[:4])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
l.Time = binary.BigEndian.Uint32(buf[:4])
|
||||
l.Body = r
|
||||
return
|
||||
}
|
||||
|
||||
// SerializeLiteral serializes a literal data packet to w and returns a
|
||||
// WriteCloser to which the data itself can be written and which MUST be closed
|
||||
// on completion. The fileName is truncated to 255 bytes.
|
||||
func SerializeLiteral(w io.WriteCloser, isBinary bool, fileName string, time uint32) (plaintext io.WriteCloser, err error) {
|
||||
var buf [4]byte
|
||||
buf[0] = 't'
|
||||
if isBinary {
|
||||
buf[0] = 'b'
|
||||
}
|
||||
if len(fileName) > 255 {
|
||||
fileName = fileName[:255]
|
||||
}
|
||||
buf[1] = byte(len(fileName))
|
||||
|
||||
inner, err := serializeStreamHeader(w, packetTypeLiteralData)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = inner.Write(buf[:2])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
_, err = inner.Write([]byte(fileName))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
binary.BigEndian.PutUint32(buf[:], time)
|
||||
_, err = inner.Write(buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
plaintext = inner
|
||||
return
|
||||
}
|
||||
143
vendor/golang.org/x/crypto/openpgp/packet/ocfb.go
generated
vendored
Normal file
143
vendor/golang.org/x/crypto/openpgp/packet/ocfb.go
generated
vendored
Normal file
@ -0,0 +1,143 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// OpenPGP CFB Mode. http://tools.ietf.org/html/rfc4880#section-13.9
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto/cipher"
|
||||
)
|
||||
|
||||
type ocfbEncrypter struct {
|
||||
b cipher.Block
|
||||
fre []byte
|
||||
outUsed int
|
||||
}
|
||||
|
||||
// An OCFBResyncOption determines if the "resynchronization step" of OCFB is
|
||||
// performed.
|
||||
type OCFBResyncOption bool
|
||||
|
||||
const (
|
||||
OCFBResync OCFBResyncOption = true
|
||||
OCFBNoResync OCFBResyncOption = false
|
||||
)
|
||||
|
||||
// NewOCFBEncrypter returns a cipher.Stream which encrypts data with OpenPGP's
|
||||
// cipher feedback mode using the given cipher.Block, and an initial amount of
|
||||
// ciphertext. randData must be random bytes and be the same length as the
|
||||
// cipher.Block's block size. Resync determines if the "resynchronization step"
|
||||
// from RFC 4880, 13.9 step 7 is performed. Different parts of OpenPGP vary on
|
||||
// this point.
|
||||
func NewOCFBEncrypter(block cipher.Block, randData []byte, resync OCFBResyncOption) (cipher.Stream, []byte) {
|
||||
blockSize := block.BlockSize()
|
||||
if len(randData) != blockSize {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
x := &ocfbEncrypter{
|
||||
b: block,
|
||||
fre: make([]byte, blockSize),
|
||||
outUsed: 0,
|
||||
}
|
||||
prefix := make([]byte, blockSize+2)
|
||||
|
||||
block.Encrypt(x.fre, x.fre)
|
||||
for i := 0; i < blockSize; i++ {
|
||||
prefix[i] = randData[i] ^ x.fre[i]
|
||||
}
|
||||
|
||||
block.Encrypt(x.fre, prefix[:blockSize])
|
||||
prefix[blockSize] = x.fre[0] ^ randData[blockSize-2]
|
||||
prefix[blockSize+1] = x.fre[1] ^ randData[blockSize-1]
|
||||
|
||||
if resync {
|
||||
block.Encrypt(x.fre, prefix[2:])
|
||||
} else {
|
||||
x.fre[0] = prefix[blockSize]
|
||||
x.fre[1] = prefix[blockSize+1]
|
||||
x.outUsed = 2
|
||||
}
|
||||
return x, prefix
|
||||
}
|
||||
|
||||
func (x *ocfbEncrypter) XORKeyStream(dst, src []byte) {
|
||||
for i := 0; i < len(src); i++ {
|
||||
if x.outUsed == len(x.fre) {
|
||||
x.b.Encrypt(x.fre, x.fre)
|
||||
x.outUsed = 0
|
||||
}
|
||||
|
||||
x.fre[x.outUsed] ^= src[i]
|
||||
dst[i] = x.fre[x.outUsed]
|
||||
x.outUsed++
|
||||
}
|
||||
}
|
||||
|
||||
type ocfbDecrypter struct {
|
||||
b cipher.Block
|
||||
fre []byte
|
||||
outUsed int
|
||||
}
|
||||
|
||||
// NewOCFBDecrypter returns a cipher.Stream which decrypts data with OpenPGP's
|
||||
// cipher feedback mode using the given cipher.Block. Prefix must be the first
|
||||
// blockSize + 2 bytes of the ciphertext, where blockSize is the cipher.Block's
|
||||
// block size. If an incorrect key is detected then nil is returned. On
|
||||
// successful exit, blockSize+2 bytes of decrypted data are written into
|
||||
// prefix. Resync determines if the "resynchronization step" from RFC 4880,
|
||||
// 13.9 step 7 is performed. Different parts of OpenPGP vary on this point.
|
||||
func NewOCFBDecrypter(block cipher.Block, prefix []byte, resync OCFBResyncOption) cipher.Stream {
|
||||
blockSize := block.BlockSize()
|
||||
if len(prefix) != blockSize+2 {
|
||||
return nil
|
||||
}
|
||||
|
||||
x := &ocfbDecrypter{
|
||||
b: block,
|
||||
fre: make([]byte, blockSize),
|
||||
outUsed: 0,
|
||||
}
|
||||
prefixCopy := make([]byte, len(prefix))
|
||||
copy(prefixCopy, prefix)
|
||||
|
||||
block.Encrypt(x.fre, x.fre)
|
||||
for i := 0; i < blockSize; i++ {
|
||||
prefixCopy[i] ^= x.fre[i]
|
||||
}
|
||||
|
||||
block.Encrypt(x.fre, prefix[:blockSize])
|
||||
prefixCopy[blockSize] ^= x.fre[0]
|
||||
prefixCopy[blockSize+1] ^= x.fre[1]
|
||||
|
||||
if prefixCopy[blockSize-2] != prefixCopy[blockSize] ||
|
||||
prefixCopy[blockSize-1] != prefixCopy[blockSize+1] {
|
||||
return nil
|
||||
}
|
||||
|
||||
if resync {
|
||||
block.Encrypt(x.fre, prefix[2:])
|
||||
} else {
|
||||
x.fre[0] = prefix[blockSize]
|
||||
x.fre[1] = prefix[blockSize+1]
|
||||
x.outUsed = 2
|
||||
}
|
||||
copy(prefix, prefixCopy)
|
||||
return x
|
||||
}
|
||||
|
||||
func (x *ocfbDecrypter) XORKeyStream(dst, src []byte) {
|
||||
for i := 0; i < len(src); i++ {
|
||||
if x.outUsed == len(x.fre) {
|
||||
x.b.Encrypt(x.fre, x.fre)
|
||||
x.outUsed = 0
|
||||
}
|
||||
|
||||
c := src[i]
|
||||
dst[i] = x.fre[x.outUsed] ^ src[i]
|
||||
x.fre[x.outUsed] = c
|
||||
x.outUsed++
|
||||
}
|
||||
}
|
||||
73
vendor/golang.org/x/crypto/openpgp/packet/one_pass_signature.go
generated
vendored
Normal file
73
vendor/golang.org/x/crypto/openpgp/packet/one_pass_signature.go
generated
vendored
Normal file
@ -0,0 +1,73 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"encoding/binary"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/s2k"
|
||||
"io"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// OnePassSignature represents a one-pass signature packet. See RFC 4880,
|
||||
// section 5.4.
|
||||
type OnePassSignature struct {
|
||||
SigType SignatureType
|
||||
Hash crypto.Hash
|
||||
PubKeyAlgo PublicKeyAlgorithm
|
||||
KeyId uint64
|
||||
IsLast bool
|
||||
}
|
||||
|
||||
const onePassSignatureVersion = 3
|
||||
|
||||
func (ops *OnePassSignature) parse(r io.Reader) (err error) {
|
||||
var buf [13]byte
|
||||
|
||||
_, err = readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] != onePassSignatureVersion {
|
||||
err = errors.UnsupportedError("one-pass-signature packet version " + strconv.Itoa(int(buf[0])))
|
||||
}
|
||||
|
||||
var ok bool
|
||||
ops.Hash, ok = s2k.HashIdToHash(buf[2])
|
||||
if !ok {
|
||||
return errors.UnsupportedError("hash function: " + strconv.Itoa(int(buf[2])))
|
||||
}
|
||||
|
||||
ops.SigType = SignatureType(buf[1])
|
||||
ops.PubKeyAlgo = PublicKeyAlgorithm(buf[3])
|
||||
ops.KeyId = binary.BigEndian.Uint64(buf[4:12])
|
||||
ops.IsLast = buf[12] != 0
|
||||
return
|
||||
}
|
||||
|
||||
// Serialize marshals the given OnePassSignature to w.
|
||||
func (ops *OnePassSignature) Serialize(w io.Writer) error {
|
||||
var buf [13]byte
|
||||
buf[0] = onePassSignatureVersion
|
||||
buf[1] = uint8(ops.SigType)
|
||||
var ok bool
|
||||
buf[2], ok = s2k.HashToHashId(ops.Hash)
|
||||
if !ok {
|
||||
return errors.UnsupportedError("hash type: " + strconv.Itoa(int(ops.Hash)))
|
||||
}
|
||||
buf[3] = uint8(ops.PubKeyAlgo)
|
||||
binary.BigEndian.PutUint64(buf[4:12], ops.KeyId)
|
||||
if ops.IsLast {
|
||||
buf[12] = 1
|
||||
}
|
||||
|
||||
if err := serializeHeader(w, packetTypeOnePassSignature, len(buf)); err != nil {
|
||||
return err
|
||||
}
|
||||
_, err := w.Write(buf[:])
|
||||
return err
|
||||
}
|
||||
162
vendor/golang.org/x/crypto/openpgp/packet/opaque.go
generated
vendored
Normal file
162
vendor/golang.org/x/crypto/openpgp/packet/opaque.go
generated
vendored
Normal file
@ -0,0 +1,162 @@
|
||||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
)
|
||||
|
||||
// OpaquePacket represents an OpenPGP packet as raw, unparsed data. This is
|
||||
// useful for splitting and storing the original packet contents separately,
|
||||
// handling unsupported packet types or accessing parts of the packet not yet
|
||||
// implemented by this package.
|
||||
type OpaquePacket struct {
|
||||
// Packet type
|
||||
Tag uint8
|
||||
// Reason why the packet was parsed opaquely
|
||||
Reason error
|
||||
// Binary contents of the packet data
|
||||
Contents []byte
|
||||
}
|
||||
|
||||
func (op *OpaquePacket) parse(r io.Reader) (err error) {
|
||||
op.Contents, err = ioutil.ReadAll(r)
|
||||
return
|
||||
}
|
||||
|
||||
// Serialize marshals the packet to a writer in its original form, including
|
||||
// the packet header.
|
||||
func (op *OpaquePacket) Serialize(w io.Writer) (err error) {
|
||||
err = serializeHeader(w, packetType(op.Tag), len(op.Contents))
|
||||
if err == nil {
|
||||
_, err = w.Write(op.Contents)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Parse attempts to parse the opaque contents into a structure supported by
|
||||
// this package. If the packet is not known then the result will be another
|
||||
// OpaquePacket.
|
||||
func (op *OpaquePacket) Parse() (p Packet, err error) {
|
||||
hdr := bytes.NewBuffer(nil)
|
||||
err = serializeHeader(hdr, packetType(op.Tag), len(op.Contents))
|
||||
if err != nil {
|
||||
op.Reason = err
|
||||
return op, err
|
||||
}
|
||||
p, err = Read(io.MultiReader(hdr, bytes.NewBuffer(op.Contents)))
|
||||
if err != nil {
|
||||
op.Reason = err
|
||||
p = op
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// OpaqueReader reads OpaquePackets from an io.Reader.
|
||||
type OpaqueReader struct {
|
||||
r io.Reader
|
||||
}
|
||||
|
||||
func NewOpaqueReader(r io.Reader) *OpaqueReader {
|
||||
return &OpaqueReader{r: r}
|
||||
}
|
||||
|
||||
// Read the next OpaquePacket.
|
||||
func (or *OpaqueReader) Next() (op *OpaquePacket, err error) {
|
||||
tag, _, contents, err := readHeader(or.r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
op = &OpaquePacket{Tag: uint8(tag), Reason: err}
|
||||
err = op.parse(contents)
|
||||
if err != nil {
|
||||
consumeAll(contents)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// OpaqueSubpacket represents an unparsed OpenPGP subpacket,
|
||||
// as found in signature and user attribute packets.
|
||||
type OpaqueSubpacket struct {
|
||||
SubType uint8
|
||||
Contents []byte
|
||||
}
|
||||
|
||||
// OpaqueSubpackets extracts opaque, unparsed OpenPGP subpackets from
|
||||
// their byte representation.
|
||||
func OpaqueSubpackets(contents []byte) (result []*OpaqueSubpacket, err error) {
|
||||
var (
|
||||
subHeaderLen int
|
||||
subPacket *OpaqueSubpacket
|
||||
)
|
||||
for len(contents) > 0 {
|
||||
subHeaderLen, subPacket, err = nextSubpacket(contents)
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
result = append(result, subPacket)
|
||||
contents = contents[subHeaderLen+len(subPacket.Contents):]
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func nextSubpacket(contents []byte) (subHeaderLen int, subPacket *OpaqueSubpacket, err error) {
|
||||
// RFC 4880, section 5.2.3.1
|
||||
var subLen uint32
|
||||
if len(contents) < 1 {
|
||||
goto Truncated
|
||||
}
|
||||
subPacket = &OpaqueSubpacket{}
|
||||
switch {
|
||||
case contents[0] < 192:
|
||||
subHeaderLen = 2 // 1 length byte, 1 subtype byte
|
||||
if len(contents) < subHeaderLen {
|
||||
goto Truncated
|
||||
}
|
||||
subLen = uint32(contents[0])
|
||||
contents = contents[1:]
|
||||
case contents[0] < 255:
|
||||
subHeaderLen = 3 // 2 length bytes, 1 subtype
|
||||
if len(contents) < subHeaderLen {
|
||||
goto Truncated
|
||||
}
|
||||
subLen = uint32(contents[0]-192)<<8 + uint32(contents[1]) + 192
|
||||
contents = contents[2:]
|
||||
default:
|
||||
subHeaderLen = 6 // 5 length bytes, 1 subtype
|
||||
if len(contents) < subHeaderLen {
|
||||
goto Truncated
|
||||
}
|
||||
subLen = uint32(contents[1])<<24 |
|
||||
uint32(contents[2])<<16 |
|
||||
uint32(contents[3])<<8 |
|
||||
uint32(contents[4])
|
||||
contents = contents[5:]
|
||||
}
|
||||
if subLen > uint32(len(contents)) || subLen == 0 {
|
||||
goto Truncated
|
||||
}
|
||||
subPacket.SubType = contents[0]
|
||||
subPacket.Contents = contents[1:subLen]
|
||||
return
|
||||
Truncated:
|
||||
err = errors.StructuralError("subpacket truncated")
|
||||
return
|
||||
}
|
||||
|
||||
func (osp *OpaqueSubpacket) Serialize(w io.Writer) (err error) {
|
||||
buf := make([]byte, 6)
|
||||
n := serializeSubpacketLength(buf, len(osp.Contents)+1)
|
||||
buf[n] = osp.SubType
|
||||
if _, err = w.Write(buf[:n+1]); err != nil {
|
||||
return
|
||||
}
|
||||
_, err = w.Write(osp.Contents)
|
||||
return
|
||||
}
|
||||
551
vendor/golang.org/x/crypto/openpgp/packet/packet.go
generated
vendored
Normal file
551
vendor/golang.org/x/crypto/openpgp/packet/packet.go
generated
vendored
Normal file
@ -0,0 +1,551 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package packet implements parsing and serialization of OpenPGP packets, as
|
||||
// specified in RFC 4880.
|
||||
package packet // import "golang.org/x/crypto/openpgp/packet"
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"crypto/des"
|
||||
"crypto/rsa"
|
||||
"io"
|
||||
"math/big"
|
||||
|
||||
"golang.org/x/crypto/cast5"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
)
|
||||
|
||||
// readFull is the same as io.ReadFull except that reading zero bytes returns
|
||||
// ErrUnexpectedEOF rather than EOF.
|
||||
func readFull(r io.Reader, buf []byte) (n int, err error) {
|
||||
n, err = io.ReadFull(r, buf)
|
||||
if err == io.EOF {
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// readLength reads an OpenPGP length from r. See RFC 4880, section 4.2.2.
|
||||
func readLength(r io.Reader) (length int64, isPartial bool, err error) {
|
||||
var buf [4]byte
|
||||
_, err = readFull(r, buf[:1])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
switch {
|
||||
case buf[0] < 192:
|
||||
length = int64(buf[0])
|
||||
case buf[0] < 224:
|
||||
length = int64(buf[0]-192) << 8
|
||||
_, err = readFull(r, buf[0:1])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
length += int64(buf[0]) + 192
|
||||
case buf[0] < 255:
|
||||
length = int64(1) << (buf[0] & 0x1f)
|
||||
isPartial = true
|
||||
default:
|
||||
_, err = readFull(r, buf[0:4])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
length = int64(buf[0])<<24 |
|
||||
int64(buf[1])<<16 |
|
||||
int64(buf[2])<<8 |
|
||||
int64(buf[3])
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// partialLengthReader wraps an io.Reader and handles OpenPGP partial lengths.
|
||||
// The continuation lengths are parsed and removed from the stream and EOF is
|
||||
// returned at the end of the packet. See RFC 4880, section 4.2.2.4.
|
||||
type partialLengthReader struct {
|
||||
r io.Reader
|
||||
remaining int64
|
||||
isPartial bool
|
||||
}
|
||||
|
||||
func (r *partialLengthReader) Read(p []byte) (n int, err error) {
|
||||
for r.remaining == 0 {
|
||||
if !r.isPartial {
|
||||
return 0, io.EOF
|
||||
}
|
||||
r.remaining, r.isPartial, err = readLength(r.r)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
}
|
||||
|
||||
toRead := int64(len(p))
|
||||
if toRead > r.remaining {
|
||||
toRead = r.remaining
|
||||
}
|
||||
|
||||
n, err = r.r.Read(p[:int(toRead)])
|
||||
r.remaining -= int64(n)
|
||||
if n < int(toRead) && err == io.EOF {
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// partialLengthWriter writes a stream of data using OpenPGP partial lengths.
|
||||
// See RFC 4880, section 4.2.2.4.
|
||||
type partialLengthWriter struct {
|
||||
w io.WriteCloser
|
||||
lengthByte [1]byte
|
||||
}
|
||||
|
||||
func (w *partialLengthWriter) Write(p []byte) (n int, err error) {
|
||||
for len(p) > 0 {
|
||||
for power := uint(14); power < 32; power-- {
|
||||
l := 1 << power
|
||||
if len(p) >= l {
|
||||
w.lengthByte[0] = 224 + uint8(power)
|
||||
_, err = w.w.Write(w.lengthByte[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
var m int
|
||||
m, err = w.w.Write(p[:l])
|
||||
n += m
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
p = p[l:]
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (w *partialLengthWriter) Close() error {
|
||||
w.lengthByte[0] = 0
|
||||
_, err := w.w.Write(w.lengthByte[:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return w.w.Close()
|
||||
}
|
||||
|
||||
// A spanReader is an io.LimitReader, but it returns ErrUnexpectedEOF if the
|
||||
// underlying Reader returns EOF before the limit has been reached.
|
||||
type spanReader struct {
|
||||
r io.Reader
|
||||
n int64
|
||||
}
|
||||
|
||||
func (l *spanReader) Read(p []byte) (n int, err error) {
|
||||
if l.n <= 0 {
|
||||
return 0, io.EOF
|
||||
}
|
||||
if int64(len(p)) > l.n {
|
||||
p = p[0:l.n]
|
||||
}
|
||||
n, err = l.r.Read(p)
|
||||
l.n -= int64(n)
|
||||
if l.n > 0 && err == io.EOF {
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// readHeader parses a packet header and returns an io.Reader which will return
|
||||
// the contents of the packet. See RFC 4880, section 4.2.
|
||||
func readHeader(r io.Reader) (tag packetType, length int64, contents io.Reader, err error) {
|
||||
var buf [4]byte
|
||||
_, err = io.ReadFull(r, buf[:1])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0]&0x80 == 0 {
|
||||
err = errors.StructuralError("tag byte does not have MSB set")
|
||||
return
|
||||
}
|
||||
if buf[0]&0x40 == 0 {
|
||||
// Old format packet
|
||||
tag = packetType((buf[0] & 0x3f) >> 2)
|
||||
lengthType := buf[0] & 3
|
||||
if lengthType == 3 {
|
||||
length = -1
|
||||
contents = r
|
||||
return
|
||||
}
|
||||
lengthBytes := 1 << lengthType
|
||||
_, err = readFull(r, buf[0:lengthBytes])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
for i := 0; i < lengthBytes; i++ {
|
||||
length <<= 8
|
||||
length |= int64(buf[i])
|
||||
}
|
||||
contents = &spanReader{r, length}
|
||||
return
|
||||
}
|
||||
|
||||
// New format packet
|
||||
tag = packetType(buf[0] & 0x3f)
|
||||
length, isPartial, err := readLength(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if isPartial {
|
||||
contents = &partialLengthReader{
|
||||
remaining: length,
|
||||
isPartial: true,
|
||||
r: r,
|
||||
}
|
||||
length = -1
|
||||
} else {
|
||||
contents = &spanReader{r, length}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// serializeHeader writes an OpenPGP packet header to w. See RFC 4880, section
|
||||
// 4.2.
|
||||
func serializeHeader(w io.Writer, ptype packetType, length int) (err error) {
|
||||
var buf [6]byte
|
||||
var n int
|
||||
|
||||
buf[0] = 0x80 | 0x40 | byte(ptype)
|
||||
if length < 192 {
|
||||
buf[1] = byte(length)
|
||||
n = 2
|
||||
} else if length < 8384 {
|
||||
length -= 192
|
||||
buf[1] = 192 + byte(length>>8)
|
||||
buf[2] = byte(length)
|
||||
n = 3
|
||||
} else {
|
||||
buf[1] = 255
|
||||
buf[2] = byte(length >> 24)
|
||||
buf[3] = byte(length >> 16)
|
||||
buf[4] = byte(length >> 8)
|
||||
buf[5] = byte(length)
|
||||
n = 6
|
||||
}
|
||||
|
||||
_, err = w.Write(buf[:n])
|
||||
return
|
||||
}
|
||||
|
||||
// serializeStreamHeader writes an OpenPGP packet header to w where the
|
||||
// length of the packet is unknown. It returns a io.WriteCloser which can be
|
||||
// used to write the contents of the packet. See RFC 4880, section 4.2.
|
||||
func serializeStreamHeader(w io.WriteCloser, ptype packetType) (out io.WriteCloser, err error) {
|
||||
var buf [1]byte
|
||||
buf[0] = 0x80 | 0x40 | byte(ptype)
|
||||
_, err = w.Write(buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
out = &partialLengthWriter{w: w}
|
||||
return
|
||||
}
|
||||
|
||||
// Packet represents an OpenPGP packet. Users are expected to try casting
|
||||
// instances of this interface to specific packet types.
|
||||
type Packet interface {
|
||||
parse(io.Reader) error
|
||||
}
|
||||
|
||||
// consumeAll reads from the given Reader until error, returning the number of
|
||||
// bytes read.
|
||||
func consumeAll(r io.Reader) (n int64, err error) {
|
||||
var m int
|
||||
var buf [1024]byte
|
||||
|
||||
for {
|
||||
m, err = r.Read(buf[:])
|
||||
n += int64(m)
|
||||
if err == io.EOF {
|
||||
err = nil
|
||||
return
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// packetType represents the numeric ids of the different OpenPGP packet types. See
|
||||
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-2
|
||||
type packetType uint8
|
||||
|
||||
const (
|
||||
packetTypeEncryptedKey packetType = 1
|
||||
packetTypeSignature packetType = 2
|
||||
packetTypeSymmetricKeyEncrypted packetType = 3
|
||||
packetTypeOnePassSignature packetType = 4
|
||||
packetTypePrivateKey packetType = 5
|
||||
packetTypePublicKey packetType = 6
|
||||
packetTypePrivateSubkey packetType = 7
|
||||
packetTypeCompressed packetType = 8
|
||||
packetTypeSymmetricallyEncrypted packetType = 9
|
||||
packetTypeLiteralData packetType = 11
|
||||
packetTypeUserId packetType = 13
|
||||
packetTypePublicSubkey packetType = 14
|
||||
packetTypeUserAttribute packetType = 17
|
||||
packetTypeSymmetricallyEncryptedMDC packetType = 18
|
||||
)
|
||||
|
||||
// peekVersion detects the version of a public key packet about to
|
||||
// be read. A bufio.Reader at the original position of the io.Reader
|
||||
// is returned.
|
||||
func peekVersion(r io.Reader) (bufr *bufio.Reader, ver byte, err error) {
|
||||
bufr = bufio.NewReader(r)
|
||||
var verBuf []byte
|
||||
if verBuf, err = bufr.Peek(1); err != nil {
|
||||
return
|
||||
}
|
||||
ver = verBuf[0]
|
||||
return
|
||||
}
|
||||
|
||||
// Read reads a single OpenPGP packet from the given io.Reader. If there is an
|
||||
// error parsing a packet, the whole packet is consumed from the input.
|
||||
func Read(r io.Reader) (p Packet, err error) {
|
||||
tag, _, contents, err := readHeader(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch tag {
|
||||
case packetTypeEncryptedKey:
|
||||
p = new(EncryptedKey)
|
||||
case packetTypeSignature:
|
||||
var version byte
|
||||
// Detect signature version
|
||||
if contents, version, err = peekVersion(contents); err != nil {
|
||||
return
|
||||
}
|
||||
if version < 4 {
|
||||
p = new(SignatureV3)
|
||||
} else {
|
||||
p = new(Signature)
|
||||
}
|
||||
case packetTypeSymmetricKeyEncrypted:
|
||||
p = new(SymmetricKeyEncrypted)
|
||||
case packetTypeOnePassSignature:
|
||||
p = new(OnePassSignature)
|
||||
case packetTypePrivateKey, packetTypePrivateSubkey:
|
||||
pk := new(PrivateKey)
|
||||
if tag == packetTypePrivateSubkey {
|
||||
pk.IsSubkey = true
|
||||
}
|
||||
p = pk
|
||||
case packetTypePublicKey, packetTypePublicSubkey:
|
||||
var version byte
|
||||
if contents, version, err = peekVersion(contents); err != nil {
|
||||
return
|
||||
}
|
||||
isSubkey := tag == packetTypePublicSubkey
|
||||
if version < 4 {
|
||||
p = &PublicKeyV3{IsSubkey: isSubkey}
|
||||
} else {
|
||||
p = &PublicKey{IsSubkey: isSubkey}
|
||||
}
|
||||
case packetTypeCompressed:
|
||||
p = new(Compressed)
|
||||
case packetTypeSymmetricallyEncrypted:
|
||||
p = new(SymmetricallyEncrypted)
|
||||
case packetTypeLiteralData:
|
||||
p = new(LiteralData)
|
||||
case packetTypeUserId:
|
||||
p = new(UserId)
|
||||
case packetTypeUserAttribute:
|
||||
p = new(UserAttribute)
|
||||
case packetTypeSymmetricallyEncryptedMDC:
|
||||
se := new(SymmetricallyEncrypted)
|
||||
se.MDC = true
|
||||
p = se
|
||||
default:
|
||||
err = errors.UnknownPacketTypeError(tag)
|
||||
}
|
||||
if p != nil {
|
||||
err = p.parse(contents)
|
||||
}
|
||||
if err != nil {
|
||||
consumeAll(contents)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// SignatureType represents the different semantic meanings of an OpenPGP
|
||||
// signature. See RFC 4880, section 5.2.1.
|
||||
type SignatureType uint8
|
||||
|
||||
const (
|
||||
SigTypeBinary SignatureType = 0
|
||||
SigTypeText = 1
|
||||
SigTypeGenericCert = 0x10
|
||||
SigTypePersonaCert = 0x11
|
||||
SigTypeCasualCert = 0x12
|
||||
SigTypePositiveCert = 0x13
|
||||
SigTypeSubkeyBinding = 0x18
|
||||
SigTypePrimaryKeyBinding = 0x19
|
||||
SigTypeDirectSignature = 0x1F
|
||||
SigTypeKeyRevocation = 0x20
|
||||
SigTypeSubkeyRevocation = 0x28
|
||||
)
|
||||
|
||||
// PublicKeyAlgorithm represents the different public key system specified for
|
||||
// OpenPGP. See
|
||||
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-12
|
||||
type PublicKeyAlgorithm uint8
|
||||
|
||||
const (
|
||||
PubKeyAlgoRSA PublicKeyAlgorithm = 1
|
||||
PubKeyAlgoElGamal PublicKeyAlgorithm = 16
|
||||
PubKeyAlgoDSA PublicKeyAlgorithm = 17
|
||||
// RFC 6637, Section 5.
|
||||
PubKeyAlgoECDH PublicKeyAlgorithm = 18
|
||||
PubKeyAlgoECDSA PublicKeyAlgorithm = 19
|
||||
|
||||
// Deprecated in RFC 4880, Section 13.5. Use key flags instead.
|
||||
PubKeyAlgoRSAEncryptOnly PublicKeyAlgorithm = 2
|
||||
PubKeyAlgoRSASignOnly PublicKeyAlgorithm = 3
|
||||
)
|
||||
|
||||
// CanEncrypt returns true if it's possible to encrypt a message to a public
|
||||
// key of the given type.
|
||||
func (pka PublicKeyAlgorithm) CanEncrypt() bool {
|
||||
switch pka {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoElGamal:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// CanSign returns true if it's possible for a public key of the given type to
|
||||
// sign a message.
|
||||
func (pka PublicKeyAlgorithm) CanSign() bool {
|
||||
switch pka {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA, PubKeyAlgoECDSA:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// CipherFunction represents the different block ciphers specified for OpenPGP. See
|
||||
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-13
|
||||
type CipherFunction uint8
|
||||
|
||||
const (
|
||||
Cipher3DES CipherFunction = 2
|
||||
CipherCAST5 CipherFunction = 3
|
||||
CipherAES128 CipherFunction = 7
|
||||
CipherAES192 CipherFunction = 8
|
||||
CipherAES256 CipherFunction = 9
|
||||
)
|
||||
|
||||
// KeySize returns the key size, in bytes, of cipher.
|
||||
func (cipher CipherFunction) KeySize() int {
|
||||
switch cipher {
|
||||
case Cipher3DES:
|
||||
return 24
|
||||
case CipherCAST5:
|
||||
return cast5.KeySize
|
||||
case CipherAES128:
|
||||
return 16
|
||||
case CipherAES192:
|
||||
return 24
|
||||
case CipherAES256:
|
||||
return 32
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// blockSize returns the block size, in bytes, of cipher.
|
||||
func (cipher CipherFunction) blockSize() int {
|
||||
switch cipher {
|
||||
case Cipher3DES:
|
||||
return des.BlockSize
|
||||
case CipherCAST5:
|
||||
return 8
|
||||
case CipherAES128, CipherAES192, CipherAES256:
|
||||
return 16
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// new returns a fresh instance of the given cipher.
|
||||
func (cipher CipherFunction) new(key []byte) (block cipher.Block) {
|
||||
switch cipher {
|
||||
case Cipher3DES:
|
||||
block, _ = des.NewTripleDESCipher(key)
|
||||
case CipherCAST5:
|
||||
block, _ = cast5.NewCipher(key)
|
||||
case CipherAES128, CipherAES192, CipherAES256:
|
||||
block, _ = aes.NewCipher(key)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// readMPI reads a big integer from r. The bit length returned is the bit
|
||||
// length that was specified in r. This is preserved so that the integer can be
|
||||
// reserialized exactly.
|
||||
func readMPI(r io.Reader) (mpi []byte, bitLength uint16, err error) {
|
||||
var buf [2]byte
|
||||
_, err = readFull(r, buf[0:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
bitLength = uint16(buf[0])<<8 | uint16(buf[1])
|
||||
numBytes := (int(bitLength) + 7) / 8
|
||||
mpi = make([]byte, numBytes)
|
||||
_, err = readFull(r, mpi)
|
||||
// According to RFC 4880 3.2. we should check that the MPI has no leading
|
||||
// zeroes (at least when not an encrypted MPI?), but this implementation
|
||||
// does generate leading zeroes, so we keep accepting them.
|
||||
return
|
||||
}
|
||||
|
||||
// writeMPI serializes a big integer to w.
|
||||
func writeMPI(w io.Writer, bitLength uint16, mpiBytes []byte) (err error) {
|
||||
// Note that we can produce leading zeroes, in violation of RFC 4880 3.2.
|
||||
// Implementations seem to be tolerant of them, and stripping them would
|
||||
// make it complex to guarantee matching re-serialization.
|
||||
_, err = w.Write([]byte{byte(bitLength >> 8), byte(bitLength)})
|
||||
if err == nil {
|
||||
_, err = w.Write(mpiBytes)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// writeBig serializes a *big.Int to w.
|
||||
func writeBig(w io.Writer, i *big.Int) error {
|
||||
return writeMPI(w, uint16(i.BitLen()), i.Bytes())
|
||||
}
|
||||
|
||||
// padToKeySize left-pads a MPI with zeroes to match the length of the
|
||||
// specified RSA public.
|
||||
func padToKeySize(pub *rsa.PublicKey, b []byte) []byte {
|
||||
k := (pub.N.BitLen() + 7) / 8
|
||||
if len(b) >= k {
|
||||
return b
|
||||
}
|
||||
bb := make([]byte, k)
|
||||
copy(bb[len(bb)-len(b):], b)
|
||||
return bb
|
||||
}
|
||||
|
||||
// CompressionAlgo Represents the different compression algorithms
|
||||
// supported by OpenPGP (except for BZIP2, which is not currently
|
||||
// supported). See Section 9.3 of RFC 4880.
|
||||
type CompressionAlgo uint8
|
||||
|
||||
const (
|
||||
CompressionNone CompressionAlgo = 0
|
||||
CompressionZIP CompressionAlgo = 1
|
||||
CompressionZLIB CompressionAlgo = 2
|
||||
)
|
||||
385
vendor/golang.org/x/crypto/openpgp/packet/private_key.go
generated
vendored
Normal file
385
vendor/golang.org/x/crypto/openpgp/packet/private_key.go
generated
vendored
Normal file
@ -0,0 +1,385 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/cipher"
|
||||
"crypto/dsa"
|
||||
"crypto/ecdsa"
|
||||
"crypto/rsa"
|
||||
"crypto/sha1"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math/big"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/elgamal"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/s2k"
|
||||
)
|
||||
|
||||
// PrivateKey represents a possibly encrypted private key. See RFC 4880,
|
||||
// section 5.5.3.
|
||||
type PrivateKey struct {
|
||||
PublicKey
|
||||
Encrypted bool // if true then the private key is unavailable until Decrypt has been called.
|
||||
encryptedData []byte
|
||||
cipher CipherFunction
|
||||
s2k func(out, in []byte)
|
||||
PrivateKey interface{} // An *{rsa|dsa|ecdsa}.PrivateKey or crypto.Signer/crypto.Decrypter (Decryptor RSA only).
|
||||
sha1Checksum bool
|
||||
iv []byte
|
||||
}
|
||||
|
||||
func NewRSAPrivateKey(creationTime time.Time, priv *rsa.PrivateKey) *PrivateKey {
|
||||
pk := new(PrivateKey)
|
||||
pk.PublicKey = *NewRSAPublicKey(creationTime, &priv.PublicKey)
|
||||
pk.PrivateKey = priv
|
||||
return pk
|
||||
}
|
||||
|
||||
func NewDSAPrivateKey(creationTime time.Time, priv *dsa.PrivateKey) *PrivateKey {
|
||||
pk := new(PrivateKey)
|
||||
pk.PublicKey = *NewDSAPublicKey(creationTime, &priv.PublicKey)
|
||||
pk.PrivateKey = priv
|
||||
return pk
|
||||
}
|
||||
|
||||
func NewElGamalPrivateKey(creationTime time.Time, priv *elgamal.PrivateKey) *PrivateKey {
|
||||
pk := new(PrivateKey)
|
||||
pk.PublicKey = *NewElGamalPublicKey(creationTime, &priv.PublicKey)
|
||||
pk.PrivateKey = priv
|
||||
return pk
|
||||
}
|
||||
|
||||
func NewECDSAPrivateKey(creationTime time.Time, priv *ecdsa.PrivateKey) *PrivateKey {
|
||||
pk := new(PrivateKey)
|
||||
pk.PublicKey = *NewECDSAPublicKey(creationTime, &priv.PublicKey)
|
||||
pk.PrivateKey = priv
|
||||
return pk
|
||||
}
|
||||
|
||||
// NewSignerPrivateKey creates a PrivateKey from a crypto.Signer that
|
||||
// implements RSA or ECDSA.
|
||||
func NewSignerPrivateKey(creationTime time.Time, signer crypto.Signer) *PrivateKey {
|
||||
pk := new(PrivateKey)
|
||||
// In general, the public Keys should be used as pointers. We still
|
||||
// type-switch on the values, for backwards-compatibility.
|
||||
switch pubkey := signer.Public().(type) {
|
||||
case *rsa.PublicKey:
|
||||
pk.PublicKey = *NewRSAPublicKey(creationTime, pubkey)
|
||||
case rsa.PublicKey:
|
||||
pk.PublicKey = *NewRSAPublicKey(creationTime, &pubkey)
|
||||
case *ecdsa.PublicKey:
|
||||
pk.PublicKey = *NewECDSAPublicKey(creationTime, pubkey)
|
||||
case ecdsa.PublicKey:
|
||||
pk.PublicKey = *NewECDSAPublicKey(creationTime, &pubkey)
|
||||
default:
|
||||
panic("openpgp: unknown crypto.Signer type in NewSignerPrivateKey")
|
||||
}
|
||||
pk.PrivateKey = signer
|
||||
return pk
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) parse(r io.Reader) (err error) {
|
||||
err = (&pk.PublicKey).parse(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
var buf [1]byte
|
||||
_, err = readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
s2kType := buf[0]
|
||||
|
||||
switch s2kType {
|
||||
case 0:
|
||||
pk.s2k = nil
|
||||
pk.Encrypted = false
|
||||
case 254, 255:
|
||||
_, err = readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.cipher = CipherFunction(buf[0])
|
||||
pk.Encrypted = true
|
||||
pk.s2k, err = s2k.Parse(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if s2kType == 254 {
|
||||
pk.sha1Checksum = true
|
||||
}
|
||||
default:
|
||||
return errors.UnsupportedError("deprecated s2k function in private key")
|
||||
}
|
||||
|
||||
if pk.Encrypted {
|
||||
blockSize := pk.cipher.blockSize()
|
||||
if blockSize == 0 {
|
||||
return errors.UnsupportedError("unsupported cipher in private key: " + strconv.Itoa(int(pk.cipher)))
|
||||
}
|
||||
pk.iv = make([]byte, blockSize)
|
||||
_, err = readFull(r, pk.iv)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
pk.encryptedData, err = ioutil.ReadAll(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if !pk.Encrypted {
|
||||
return pk.parsePrivateKey(pk.encryptedData)
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func mod64kHash(d []byte) uint16 {
|
||||
var h uint16
|
||||
for _, b := range d {
|
||||
h += uint16(b)
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) Serialize(w io.Writer) (err error) {
|
||||
// TODO(agl): support encrypted private keys
|
||||
buf := bytes.NewBuffer(nil)
|
||||
err = pk.PublicKey.serializeWithoutHeaders(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
buf.WriteByte(0 /* no encryption */)
|
||||
|
||||
privateKeyBuf := bytes.NewBuffer(nil)
|
||||
|
||||
switch priv := pk.PrivateKey.(type) {
|
||||
case *rsa.PrivateKey:
|
||||
err = serializeRSAPrivateKey(privateKeyBuf, priv)
|
||||
case *dsa.PrivateKey:
|
||||
err = serializeDSAPrivateKey(privateKeyBuf, priv)
|
||||
case *elgamal.PrivateKey:
|
||||
err = serializeElGamalPrivateKey(privateKeyBuf, priv)
|
||||
case *ecdsa.PrivateKey:
|
||||
err = serializeECDSAPrivateKey(privateKeyBuf, priv)
|
||||
default:
|
||||
err = errors.InvalidArgumentError("unknown private key type")
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
ptype := packetTypePrivateKey
|
||||
contents := buf.Bytes()
|
||||
privateKeyBytes := privateKeyBuf.Bytes()
|
||||
if pk.IsSubkey {
|
||||
ptype = packetTypePrivateSubkey
|
||||
}
|
||||
err = serializeHeader(w, ptype, len(contents)+len(privateKeyBytes)+2)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
_, err = w.Write(contents)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
_, err = w.Write(privateKeyBytes)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
checksum := mod64kHash(privateKeyBytes)
|
||||
var checksumBytes [2]byte
|
||||
checksumBytes[0] = byte(checksum >> 8)
|
||||
checksumBytes[1] = byte(checksum)
|
||||
_, err = w.Write(checksumBytes[:])
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func serializeRSAPrivateKey(w io.Writer, priv *rsa.PrivateKey) error {
|
||||
err := writeBig(w, priv.D)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = writeBig(w, priv.Primes[1])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = writeBig(w, priv.Primes[0])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return writeBig(w, priv.Precomputed.Qinv)
|
||||
}
|
||||
|
||||
func serializeDSAPrivateKey(w io.Writer, priv *dsa.PrivateKey) error {
|
||||
return writeBig(w, priv.X)
|
||||
}
|
||||
|
||||
func serializeElGamalPrivateKey(w io.Writer, priv *elgamal.PrivateKey) error {
|
||||
return writeBig(w, priv.X)
|
||||
}
|
||||
|
||||
func serializeECDSAPrivateKey(w io.Writer, priv *ecdsa.PrivateKey) error {
|
||||
return writeBig(w, priv.D)
|
||||
}
|
||||
|
||||
// Decrypt decrypts an encrypted private key using a passphrase.
|
||||
func (pk *PrivateKey) Decrypt(passphrase []byte) error {
|
||||
if !pk.Encrypted {
|
||||
return nil
|
||||
}
|
||||
|
||||
key := make([]byte, pk.cipher.KeySize())
|
||||
pk.s2k(key, passphrase)
|
||||
block := pk.cipher.new(key)
|
||||
cfb := cipher.NewCFBDecrypter(block, pk.iv)
|
||||
|
||||
data := make([]byte, len(pk.encryptedData))
|
||||
cfb.XORKeyStream(data, pk.encryptedData)
|
||||
|
||||
if pk.sha1Checksum {
|
||||
if len(data) < sha1.Size {
|
||||
return errors.StructuralError("truncated private key data")
|
||||
}
|
||||
h := sha1.New()
|
||||
h.Write(data[:len(data)-sha1.Size])
|
||||
sum := h.Sum(nil)
|
||||
if !bytes.Equal(sum, data[len(data)-sha1.Size:]) {
|
||||
return errors.StructuralError("private key checksum failure")
|
||||
}
|
||||
data = data[:len(data)-sha1.Size]
|
||||
} else {
|
||||
if len(data) < 2 {
|
||||
return errors.StructuralError("truncated private key data")
|
||||
}
|
||||
var sum uint16
|
||||
for i := 0; i < len(data)-2; i++ {
|
||||
sum += uint16(data[i])
|
||||
}
|
||||
if data[len(data)-2] != uint8(sum>>8) ||
|
||||
data[len(data)-1] != uint8(sum) {
|
||||
return errors.StructuralError("private key checksum failure")
|
||||
}
|
||||
data = data[:len(data)-2]
|
||||
}
|
||||
|
||||
return pk.parsePrivateKey(data)
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) parsePrivateKey(data []byte) (err error) {
|
||||
switch pk.PublicKey.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoRSAEncryptOnly:
|
||||
return pk.parseRSAPrivateKey(data)
|
||||
case PubKeyAlgoDSA:
|
||||
return pk.parseDSAPrivateKey(data)
|
||||
case PubKeyAlgoElGamal:
|
||||
return pk.parseElGamalPrivateKey(data)
|
||||
case PubKeyAlgoECDSA:
|
||||
return pk.parseECDSAPrivateKey(data)
|
||||
}
|
||||
panic("impossible")
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) parseRSAPrivateKey(data []byte) (err error) {
|
||||
rsaPub := pk.PublicKey.PublicKey.(*rsa.PublicKey)
|
||||
rsaPriv := new(rsa.PrivateKey)
|
||||
rsaPriv.PublicKey = *rsaPub
|
||||
|
||||
buf := bytes.NewBuffer(data)
|
||||
d, _, err := readMPI(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
p, _, err := readMPI(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
q, _, err := readMPI(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
rsaPriv.D = new(big.Int).SetBytes(d)
|
||||
rsaPriv.Primes = make([]*big.Int, 2)
|
||||
rsaPriv.Primes[0] = new(big.Int).SetBytes(p)
|
||||
rsaPriv.Primes[1] = new(big.Int).SetBytes(q)
|
||||
if err := rsaPriv.Validate(); err != nil {
|
||||
return err
|
||||
}
|
||||
rsaPriv.Precompute()
|
||||
pk.PrivateKey = rsaPriv
|
||||
pk.Encrypted = false
|
||||
pk.encryptedData = nil
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) parseDSAPrivateKey(data []byte) (err error) {
|
||||
dsaPub := pk.PublicKey.PublicKey.(*dsa.PublicKey)
|
||||
dsaPriv := new(dsa.PrivateKey)
|
||||
dsaPriv.PublicKey = *dsaPub
|
||||
|
||||
buf := bytes.NewBuffer(data)
|
||||
x, _, err := readMPI(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
dsaPriv.X = new(big.Int).SetBytes(x)
|
||||
pk.PrivateKey = dsaPriv
|
||||
pk.Encrypted = false
|
||||
pk.encryptedData = nil
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) parseElGamalPrivateKey(data []byte) (err error) {
|
||||
pub := pk.PublicKey.PublicKey.(*elgamal.PublicKey)
|
||||
priv := new(elgamal.PrivateKey)
|
||||
priv.PublicKey = *pub
|
||||
|
||||
buf := bytes.NewBuffer(data)
|
||||
x, _, err := readMPI(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
priv.X = new(big.Int).SetBytes(x)
|
||||
pk.PrivateKey = priv
|
||||
pk.Encrypted = false
|
||||
pk.encryptedData = nil
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (pk *PrivateKey) parseECDSAPrivateKey(data []byte) (err error) {
|
||||
ecdsaPub := pk.PublicKey.PublicKey.(*ecdsa.PublicKey)
|
||||
|
||||
buf := bytes.NewBuffer(data)
|
||||
d, _, err := readMPI(buf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
pk.PrivateKey = &ecdsa.PrivateKey{
|
||||
PublicKey: *ecdsaPub,
|
||||
D: new(big.Int).SetBytes(d),
|
||||
}
|
||||
pk.Encrypted = false
|
||||
pk.encryptedData = nil
|
||||
|
||||
return nil
|
||||
}
|
||||
753
vendor/golang.org/x/crypto/openpgp/packet/public_key.go
generated
vendored
Normal file
753
vendor/golang.org/x/crypto/openpgp/packet/public_key.go
generated
vendored
Normal file
@ -0,0 +1,753 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/dsa"
|
||||
"crypto/ecdsa"
|
||||
"crypto/elliptic"
|
||||
"crypto/rsa"
|
||||
"crypto/sha1"
|
||||
_ "crypto/sha256"
|
||||
_ "crypto/sha512"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"hash"
|
||||
"io"
|
||||
"math/big"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/elgamal"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
)
|
||||
|
||||
var (
|
||||
// NIST curve P-256
|
||||
oidCurveP256 []byte = []byte{0x2A, 0x86, 0x48, 0xCE, 0x3D, 0x03, 0x01, 0x07}
|
||||
// NIST curve P-384
|
||||
oidCurveP384 []byte = []byte{0x2B, 0x81, 0x04, 0x00, 0x22}
|
||||
// NIST curve P-521
|
||||
oidCurveP521 []byte = []byte{0x2B, 0x81, 0x04, 0x00, 0x23}
|
||||
)
|
||||
|
||||
const maxOIDLength = 8
|
||||
|
||||
// ecdsaKey stores the algorithm-specific fields for ECDSA keys.
|
||||
// as defined in RFC 6637, Section 9.
|
||||
type ecdsaKey struct {
|
||||
// oid contains the OID byte sequence identifying the elliptic curve used
|
||||
oid []byte
|
||||
// p contains the elliptic curve point that represents the public key
|
||||
p parsedMPI
|
||||
}
|
||||
|
||||
// parseOID reads the OID for the curve as defined in RFC 6637, Section 9.
|
||||
func parseOID(r io.Reader) (oid []byte, err error) {
|
||||
buf := make([]byte, maxOIDLength)
|
||||
if _, err = readFull(r, buf[:1]); err != nil {
|
||||
return
|
||||
}
|
||||
oidLen := buf[0]
|
||||
if int(oidLen) > len(buf) {
|
||||
err = errors.UnsupportedError("invalid oid length: " + strconv.Itoa(int(oidLen)))
|
||||
return
|
||||
}
|
||||
oid = buf[:oidLen]
|
||||
_, err = readFull(r, oid)
|
||||
return
|
||||
}
|
||||
|
||||
func (f *ecdsaKey) parse(r io.Reader) (err error) {
|
||||
if f.oid, err = parseOID(r); err != nil {
|
||||
return err
|
||||
}
|
||||
f.p.bytes, f.p.bitLength, err = readMPI(r)
|
||||
return
|
||||
}
|
||||
|
||||
func (f *ecdsaKey) serialize(w io.Writer) (err error) {
|
||||
buf := make([]byte, maxOIDLength+1)
|
||||
buf[0] = byte(len(f.oid))
|
||||
copy(buf[1:], f.oid)
|
||||
if _, err = w.Write(buf[:len(f.oid)+1]); err != nil {
|
||||
return
|
||||
}
|
||||
return writeMPIs(w, f.p)
|
||||
}
|
||||
|
||||
func (f *ecdsaKey) newECDSA() (*ecdsa.PublicKey, error) {
|
||||
var c elliptic.Curve
|
||||
if bytes.Equal(f.oid, oidCurveP256) {
|
||||
c = elliptic.P256()
|
||||
} else if bytes.Equal(f.oid, oidCurveP384) {
|
||||
c = elliptic.P384()
|
||||
} else if bytes.Equal(f.oid, oidCurveP521) {
|
||||
c = elliptic.P521()
|
||||
} else {
|
||||
return nil, errors.UnsupportedError(fmt.Sprintf("unsupported oid: %x", f.oid))
|
||||
}
|
||||
x, y := elliptic.Unmarshal(c, f.p.bytes)
|
||||
if x == nil {
|
||||
return nil, errors.UnsupportedError("failed to parse EC point")
|
||||
}
|
||||
return &ecdsa.PublicKey{Curve: c, X: x, Y: y}, nil
|
||||
}
|
||||
|
||||
func (f *ecdsaKey) byteLen() int {
|
||||
return 1 + len(f.oid) + 2 + len(f.p.bytes)
|
||||
}
|
||||
|
||||
type kdfHashFunction byte
|
||||
type kdfAlgorithm byte
|
||||
|
||||
// ecdhKdf stores key derivation function parameters
|
||||
// used for ECDH encryption. See RFC 6637, Section 9.
|
||||
type ecdhKdf struct {
|
||||
KdfHash kdfHashFunction
|
||||
KdfAlgo kdfAlgorithm
|
||||
}
|
||||
|
||||
func (f *ecdhKdf) parse(r io.Reader) (err error) {
|
||||
buf := make([]byte, 1)
|
||||
if _, err = readFull(r, buf); err != nil {
|
||||
return
|
||||
}
|
||||
kdfLen := int(buf[0])
|
||||
if kdfLen < 3 {
|
||||
return errors.UnsupportedError("Unsupported ECDH KDF length: " + strconv.Itoa(kdfLen))
|
||||
}
|
||||
buf = make([]byte, kdfLen)
|
||||
if _, err = readFull(r, buf); err != nil {
|
||||
return
|
||||
}
|
||||
reserved := int(buf[0])
|
||||
f.KdfHash = kdfHashFunction(buf[1])
|
||||
f.KdfAlgo = kdfAlgorithm(buf[2])
|
||||
if reserved != 0x01 {
|
||||
return errors.UnsupportedError("Unsupported KDF reserved field: " + strconv.Itoa(reserved))
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (f *ecdhKdf) serialize(w io.Writer) (err error) {
|
||||
buf := make([]byte, 4)
|
||||
// See RFC 6637, Section 9, Algorithm-Specific Fields for ECDH keys.
|
||||
buf[0] = byte(0x03) // Length of the following fields
|
||||
buf[1] = byte(0x01) // Reserved for future extensions, must be 1 for now
|
||||
buf[2] = byte(f.KdfHash)
|
||||
buf[3] = byte(f.KdfAlgo)
|
||||
_, err = w.Write(buf[:])
|
||||
return
|
||||
}
|
||||
|
||||
func (f *ecdhKdf) byteLen() int {
|
||||
return 4
|
||||
}
|
||||
|
||||
// PublicKey represents an OpenPGP public key. See RFC 4880, section 5.5.2.
|
||||
type PublicKey struct {
|
||||
CreationTime time.Time
|
||||
PubKeyAlgo PublicKeyAlgorithm
|
||||
PublicKey interface{} // *rsa.PublicKey, *dsa.PublicKey or *ecdsa.PublicKey
|
||||
Fingerprint [20]byte
|
||||
KeyId uint64
|
||||
IsSubkey bool
|
||||
|
||||
n, e, p, q, g, y parsedMPI
|
||||
|
||||
// RFC 6637 fields
|
||||
ec *ecdsaKey
|
||||
ecdh *ecdhKdf
|
||||
}
|
||||
|
||||
// signingKey provides a convenient abstraction over signature verification
|
||||
// for v3 and v4 public keys.
|
||||
type signingKey interface {
|
||||
SerializeSignaturePrefix(io.Writer)
|
||||
serializeWithoutHeaders(io.Writer) error
|
||||
}
|
||||
|
||||
func fromBig(n *big.Int) parsedMPI {
|
||||
return parsedMPI{
|
||||
bytes: n.Bytes(),
|
||||
bitLength: uint16(n.BitLen()),
|
||||
}
|
||||
}
|
||||
|
||||
// NewRSAPublicKey returns a PublicKey that wraps the given rsa.PublicKey.
|
||||
func NewRSAPublicKey(creationTime time.Time, pub *rsa.PublicKey) *PublicKey {
|
||||
pk := &PublicKey{
|
||||
CreationTime: creationTime,
|
||||
PubKeyAlgo: PubKeyAlgoRSA,
|
||||
PublicKey: pub,
|
||||
n: fromBig(pub.N),
|
||||
e: fromBig(big.NewInt(int64(pub.E))),
|
||||
}
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return pk
|
||||
}
|
||||
|
||||
// NewDSAPublicKey returns a PublicKey that wraps the given dsa.PublicKey.
|
||||
func NewDSAPublicKey(creationTime time.Time, pub *dsa.PublicKey) *PublicKey {
|
||||
pk := &PublicKey{
|
||||
CreationTime: creationTime,
|
||||
PubKeyAlgo: PubKeyAlgoDSA,
|
||||
PublicKey: pub,
|
||||
p: fromBig(pub.P),
|
||||
q: fromBig(pub.Q),
|
||||
g: fromBig(pub.G),
|
||||
y: fromBig(pub.Y),
|
||||
}
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return pk
|
||||
}
|
||||
|
||||
// NewElGamalPublicKey returns a PublicKey that wraps the given elgamal.PublicKey.
|
||||
func NewElGamalPublicKey(creationTime time.Time, pub *elgamal.PublicKey) *PublicKey {
|
||||
pk := &PublicKey{
|
||||
CreationTime: creationTime,
|
||||
PubKeyAlgo: PubKeyAlgoElGamal,
|
||||
PublicKey: pub,
|
||||
p: fromBig(pub.P),
|
||||
g: fromBig(pub.G),
|
||||
y: fromBig(pub.Y),
|
||||
}
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return pk
|
||||
}
|
||||
|
||||
func NewECDSAPublicKey(creationTime time.Time, pub *ecdsa.PublicKey) *PublicKey {
|
||||
pk := &PublicKey{
|
||||
CreationTime: creationTime,
|
||||
PubKeyAlgo: PubKeyAlgoECDSA,
|
||||
PublicKey: pub,
|
||||
ec: new(ecdsaKey),
|
||||
}
|
||||
|
||||
switch pub.Curve {
|
||||
case elliptic.P256():
|
||||
pk.ec.oid = oidCurveP256
|
||||
case elliptic.P384():
|
||||
pk.ec.oid = oidCurveP384
|
||||
case elliptic.P521():
|
||||
pk.ec.oid = oidCurveP521
|
||||
default:
|
||||
panic("unknown elliptic curve")
|
||||
}
|
||||
|
||||
pk.ec.p.bytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y)
|
||||
|
||||
// The bit length is 3 (for the 0x04 specifying an uncompressed key)
|
||||
// plus two field elements (for x and y), which are rounded up to the
|
||||
// nearest byte. See https://tools.ietf.org/html/rfc6637#section-6
|
||||
fieldBytes := (pub.Curve.Params().BitSize + 7) & ^7
|
||||
pk.ec.p.bitLength = uint16(3 + fieldBytes + fieldBytes)
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return pk
|
||||
}
|
||||
|
||||
func (pk *PublicKey) parse(r io.Reader) (err error) {
|
||||
// RFC 4880, section 5.5.2
|
||||
var buf [6]byte
|
||||
_, err = readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] != 4 {
|
||||
return errors.UnsupportedError("public key version")
|
||||
}
|
||||
pk.CreationTime = time.Unix(int64(uint32(buf[1])<<24|uint32(buf[2])<<16|uint32(buf[3])<<8|uint32(buf[4])), 0)
|
||||
pk.PubKeyAlgo = PublicKeyAlgorithm(buf[5])
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
err = pk.parseRSA(r)
|
||||
case PubKeyAlgoDSA:
|
||||
err = pk.parseDSA(r)
|
||||
case PubKeyAlgoElGamal:
|
||||
err = pk.parseElGamal(r)
|
||||
case PubKeyAlgoECDSA:
|
||||
pk.ec = new(ecdsaKey)
|
||||
if err = pk.ec.parse(r); err != nil {
|
||||
return err
|
||||
}
|
||||
pk.PublicKey, err = pk.ec.newECDSA()
|
||||
case PubKeyAlgoECDH:
|
||||
pk.ec = new(ecdsaKey)
|
||||
if err = pk.ec.parse(r); err != nil {
|
||||
return
|
||||
}
|
||||
pk.ecdh = new(ecdhKdf)
|
||||
if err = pk.ecdh.parse(r); err != nil {
|
||||
return
|
||||
}
|
||||
// The ECDH key is stored in an ecdsa.PublicKey for convenience.
|
||||
pk.PublicKey, err = pk.ec.newECDSA()
|
||||
default:
|
||||
err = errors.UnsupportedError("public key type: " + strconv.Itoa(int(pk.PubKeyAlgo)))
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return
|
||||
}
|
||||
|
||||
func (pk *PublicKey) setFingerPrintAndKeyId() {
|
||||
// RFC 4880, section 12.2
|
||||
fingerPrint := sha1.New()
|
||||
pk.SerializeSignaturePrefix(fingerPrint)
|
||||
pk.serializeWithoutHeaders(fingerPrint)
|
||||
copy(pk.Fingerprint[:], fingerPrint.Sum(nil))
|
||||
pk.KeyId = binary.BigEndian.Uint64(pk.Fingerprint[12:20])
|
||||
}
|
||||
|
||||
// parseRSA parses RSA public key material from the given Reader. See RFC 4880,
|
||||
// section 5.5.2.
|
||||
func (pk *PublicKey) parseRSA(r io.Reader) (err error) {
|
||||
pk.n.bytes, pk.n.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.e.bytes, pk.e.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if len(pk.e.bytes) > 3 {
|
||||
err = errors.UnsupportedError("large public exponent")
|
||||
return
|
||||
}
|
||||
rsa := &rsa.PublicKey{
|
||||
N: new(big.Int).SetBytes(pk.n.bytes),
|
||||
E: 0,
|
||||
}
|
||||
for i := 0; i < len(pk.e.bytes); i++ {
|
||||
rsa.E <<= 8
|
||||
rsa.E |= int(pk.e.bytes[i])
|
||||
}
|
||||
pk.PublicKey = rsa
|
||||
return
|
||||
}
|
||||
|
||||
// parseDSA parses DSA public key material from the given Reader. See RFC 4880,
|
||||
// section 5.5.2.
|
||||
func (pk *PublicKey) parseDSA(r io.Reader) (err error) {
|
||||
pk.p.bytes, pk.p.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.q.bytes, pk.q.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.g.bytes, pk.g.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.y.bytes, pk.y.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
dsa := new(dsa.PublicKey)
|
||||
dsa.P = new(big.Int).SetBytes(pk.p.bytes)
|
||||
dsa.Q = new(big.Int).SetBytes(pk.q.bytes)
|
||||
dsa.G = new(big.Int).SetBytes(pk.g.bytes)
|
||||
dsa.Y = new(big.Int).SetBytes(pk.y.bytes)
|
||||
pk.PublicKey = dsa
|
||||
return
|
||||
}
|
||||
|
||||
// parseElGamal parses ElGamal public key material from the given Reader. See
|
||||
// RFC 4880, section 5.5.2.
|
||||
func (pk *PublicKey) parseElGamal(r io.Reader) (err error) {
|
||||
pk.p.bytes, pk.p.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.g.bytes, pk.g.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pk.y.bytes, pk.y.bitLength, err = readMPI(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
elgamal := new(elgamal.PublicKey)
|
||||
elgamal.P = new(big.Int).SetBytes(pk.p.bytes)
|
||||
elgamal.G = new(big.Int).SetBytes(pk.g.bytes)
|
||||
elgamal.Y = new(big.Int).SetBytes(pk.y.bytes)
|
||||
pk.PublicKey = elgamal
|
||||
return
|
||||
}
|
||||
|
||||
// SerializeSignaturePrefix writes the prefix for this public key to the given Writer.
|
||||
// The prefix is used when calculating a signature over this public key. See
|
||||
// RFC 4880, section 5.2.4.
|
||||
func (pk *PublicKey) SerializeSignaturePrefix(h io.Writer) {
|
||||
var pLength uint16
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
pLength += 2 + uint16(len(pk.n.bytes))
|
||||
pLength += 2 + uint16(len(pk.e.bytes))
|
||||
case PubKeyAlgoDSA:
|
||||
pLength += 2 + uint16(len(pk.p.bytes))
|
||||
pLength += 2 + uint16(len(pk.q.bytes))
|
||||
pLength += 2 + uint16(len(pk.g.bytes))
|
||||
pLength += 2 + uint16(len(pk.y.bytes))
|
||||
case PubKeyAlgoElGamal:
|
||||
pLength += 2 + uint16(len(pk.p.bytes))
|
||||
pLength += 2 + uint16(len(pk.g.bytes))
|
||||
pLength += 2 + uint16(len(pk.y.bytes))
|
||||
case PubKeyAlgoECDSA:
|
||||
pLength += uint16(pk.ec.byteLen())
|
||||
case PubKeyAlgoECDH:
|
||||
pLength += uint16(pk.ec.byteLen())
|
||||
pLength += uint16(pk.ecdh.byteLen())
|
||||
default:
|
||||
panic("unknown public key algorithm")
|
||||
}
|
||||
pLength += 6
|
||||
h.Write([]byte{0x99, byte(pLength >> 8), byte(pLength)})
|
||||
return
|
||||
}
|
||||
|
||||
func (pk *PublicKey) Serialize(w io.Writer) (err error) {
|
||||
length := 6 // 6 byte header
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
length += 2 + len(pk.n.bytes)
|
||||
length += 2 + len(pk.e.bytes)
|
||||
case PubKeyAlgoDSA:
|
||||
length += 2 + len(pk.p.bytes)
|
||||
length += 2 + len(pk.q.bytes)
|
||||
length += 2 + len(pk.g.bytes)
|
||||
length += 2 + len(pk.y.bytes)
|
||||
case PubKeyAlgoElGamal:
|
||||
length += 2 + len(pk.p.bytes)
|
||||
length += 2 + len(pk.g.bytes)
|
||||
length += 2 + len(pk.y.bytes)
|
||||
case PubKeyAlgoECDSA:
|
||||
length += pk.ec.byteLen()
|
||||
case PubKeyAlgoECDH:
|
||||
length += pk.ec.byteLen()
|
||||
length += pk.ecdh.byteLen()
|
||||
default:
|
||||
panic("unknown public key algorithm")
|
||||
}
|
||||
|
||||
packetType := packetTypePublicKey
|
||||
if pk.IsSubkey {
|
||||
packetType = packetTypePublicSubkey
|
||||
}
|
||||
err = serializeHeader(w, packetType, length)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return pk.serializeWithoutHeaders(w)
|
||||
}
|
||||
|
||||
// serializeWithoutHeaders marshals the PublicKey to w in the form of an
|
||||
// OpenPGP public key packet, not including the packet header.
|
||||
func (pk *PublicKey) serializeWithoutHeaders(w io.Writer) (err error) {
|
||||
var buf [6]byte
|
||||
buf[0] = 4
|
||||
t := uint32(pk.CreationTime.Unix())
|
||||
buf[1] = byte(t >> 24)
|
||||
buf[2] = byte(t >> 16)
|
||||
buf[3] = byte(t >> 8)
|
||||
buf[4] = byte(t)
|
||||
buf[5] = byte(pk.PubKeyAlgo)
|
||||
|
||||
_, err = w.Write(buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
return writeMPIs(w, pk.n, pk.e)
|
||||
case PubKeyAlgoDSA:
|
||||
return writeMPIs(w, pk.p, pk.q, pk.g, pk.y)
|
||||
case PubKeyAlgoElGamal:
|
||||
return writeMPIs(w, pk.p, pk.g, pk.y)
|
||||
case PubKeyAlgoECDSA:
|
||||
return pk.ec.serialize(w)
|
||||
case PubKeyAlgoECDH:
|
||||
if err = pk.ec.serialize(w); err != nil {
|
||||
return
|
||||
}
|
||||
return pk.ecdh.serialize(w)
|
||||
}
|
||||
return errors.InvalidArgumentError("bad public-key algorithm")
|
||||
}
|
||||
|
||||
// CanSign returns true iff this public key can generate signatures
|
||||
func (pk *PublicKey) CanSign() bool {
|
||||
return pk.PubKeyAlgo != PubKeyAlgoRSAEncryptOnly && pk.PubKeyAlgo != PubKeyAlgoElGamal
|
||||
}
|
||||
|
||||
// VerifySignature returns nil iff sig is a valid signature, made by this
|
||||
// public key, of the data hashed into signed. signed is mutated by this call.
|
||||
func (pk *PublicKey) VerifySignature(signed hash.Hash, sig *Signature) (err error) {
|
||||
if !pk.CanSign() {
|
||||
return errors.InvalidArgumentError("public key cannot generate signatures")
|
||||
}
|
||||
|
||||
signed.Write(sig.HashSuffix)
|
||||
hashBytes := signed.Sum(nil)
|
||||
|
||||
if hashBytes[0] != sig.HashTag[0] || hashBytes[1] != sig.HashTag[1] {
|
||||
return errors.SignatureError("hash tag doesn't match")
|
||||
}
|
||||
|
||||
if pk.PubKeyAlgo != sig.PubKeyAlgo {
|
||||
return errors.InvalidArgumentError("public key and signature use different algorithms")
|
||||
}
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
rsaPublicKey, _ := pk.PublicKey.(*rsa.PublicKey)
|
||||
err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, padToKeySize(rsaPublicKey, sig.RSASignature.bytes))
|
||||
if err != nil {
|
||||
return errors.SignatureError("RSA verification failure")
|
||||
}
|
||||
return nil
|
||||
case PubKeyAlgoDSA:
|
||||
dsaPublicKey, _ := pk.PublicKey.(*dsa.PublicKey)
|
||||
// Need to truncate hashBytes to match FIPS 186-3 section 4.6.
|
||||
subgroupSize := (dsaPublicKey.Q.BitLen() + 7) / 8
|
||||
if len(hashBytes) > subgroupSize {
|
||||
hashBytes = hashBytes[:subgroupSize]
|
||||
}
|
||||
if !dsa.Verify(dsaPublicKey, hashBytes, new(big.Int).SetBytes(sig.DSASigR.bytes), new(big.Int).SetBytes(sig.DSASigS.bytes)) {
|
||||
return errors.SignatureError("DSA verification failure")
|
||||
}
|
||||
return nil
|
||||
case PubKeyAlgoECDSA:
|
||||
ecdsaPublicKey := pk.PublicKey.(*ecdsa.PublicKey)
|
||||
if !ecdsa.Verify(ecdsaPublicKey, hashBytes, new(big.Int).SetBytes(sig.ECDSASigR.bytes), new(big.Int).SetBytes(sig.ECDSASigS.bytes)) {
|
||||
return errors.SignatureError("ECDSA verification failure")
|
||||
}
|
||||
return nil
|
||||
default:
|
||||
return errors.SignatureError("Unsupported public key algorithm used in signature")
|
||||
}
|
||||
}
|
||||
|
||||
// VerifySignatureV3 returns nil iff sig is a valid signature, made by this
|
||||
// public key, of the data hashed into signed. signed is mutated by this call.
|
||||
func (pk *PublicKey) VerifySignatureV3(signed hash.Hash, sig *SignatureV3) (err error) {
|
||||
if !pk.CanSign() {
|
||||
return errors.InvalidArgumentError("public key cannot generate signatures")
|
||||
}
|
||||
|
||||
suffix := make([]byte, 5)
|
||||
suffix[0] = byte(sig.SigType)
|
||||
binary.BigEndian.PutUint32(suffix[1:], uint32(sig.CreationTime.Unix()))
|
||||
signed.Write(suffix)
|
||||
hashBytes := signed.Sum(nil)
|
||||
|
||||
if hashBytes[0] != sig.HashTag[0] || hashBytes[1] != sig.HashTag[1] {
|
||||
return errors.SignatureError("hash tag doesn't match")
|
||||
}
|
||||
|
||||
if pk.PubKeyAlgo != sig.PubKeyAlgo {
|
||||
return errors.InvalidArgumentError("public key and signature use different algorithms")
|
||||
}
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
rsaPublicKey := pk.PublicKey.(*rsa.PublicKey)
|
||||
if err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, padToKeySize(rsaPublicKey, sig.RSASignature.bytes)); err != nil {
|
||||
return errors.SignatureError("RSA verification failure")
|
||||
}
|
||||
return
|
||||
case PubKeyAlgoDSA:
|
||||
dsaPublicKey := pk.PublicKey.(*dsa.PublicKey)
|
||||
// Need to truncate hashBytes to match FIPS 186-3 section 4.6.
|
||||
subgroupSize := (dsaPublicKey.Q.BitLen() + 7) / 8
|
||||
if len(hashBytes) > subgroupSize {
|
||||
hashBytes = hashBytes[:subgroupSize]
|
||||
}
|
||||
if !dsa.Verify(dsaPublicKey, hashBytes, new(big.Int).SetBytes(sig.DSASigR.bytes), new(big.Int).SetBytes(sig.DSASigS.bytes)) {
|
||||
return errors.SignatureError("DSA verification failure")
|
||||
}
|
||||
return nil
|
||||
default:
|
||||
panic("shouldn't happen")
|
||||
}
|
||||
}
|
||||
|
||||
// keySignatureHash returns a Hash of the message that needs to be signed for
|
||||
// pk to assert a subkey relationship to signed.
|
||||
func keySignatureHash(pk, signed signingKey, hashFunc crypto.Hash) (h hash.Hash, err error) {
|
||||
if !hashFunc.Available() {
|
||||
return nil, errors.UnsupportedError("hash function")
|
||||
}
|
||||
h = hashFunc.New()
|
||||
|
||||
// RFC 4880, section 5.2.4
|
||||
pk.SerializeSignaturePrefix(h)
|
||||
pk.serializeWithoutHeaders(h)
|
||||
signed.SerializeSignaturePrefix(h)
|
||||
signed.serializeWithoutHeaders(h)
|
||||
return
|
||||
}
|
||||
|
||||
// VerifyKeySignature returns nil iff sig is a valid signature, made by this
|
||||
// public key, of signed.
|
||||
func (pk *PublicKey) VerifyKeySignature(signed *PublicKey, sig *Signature) error {
|
||||
h, err := keySignatureHash(pk, signed, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err = pk.VerifySignature(h, sig); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if sig.FlagSign {
|
||||
// Signing subkeys must be cross-signed. See
|
||||
// https://www.gnupg.org/faq/subkey-cross-certify.html.
|
||||
if sig.EmbeddedSignature == nil {
|
||||
return errors.StructuralError("signing subkey is missing cross-signature")
|
||||
}
|
||||
// Verify the cross-signature. This is calculated over the same
|
||||
// data as the main signature, so we cannot just recursively
|
||||
// call signed.VerifyKeySignature(...)
|
||||
if h, err = keySignatureHash(pk, signed, sig.EmbeddedSignature.Hash); err != nil {
|
||||
return errors.StructuralError("error while hashing for cross-signature: " + err.Error())
|
||||
}
|
||||
if err := signed.VerifySignature(h, sig.EmbeddedSignature); err != nil {
|
||||
return errors.StructuralError("error while verifying cross-signature: " + err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func keyRevocationHash(pk signingKey, hashFunc crypto.Hash) (h hash.Hash, err error) {
|
||||
if !hashFunc.Available() {
|
||||
return nil, errors.UnsupportedError("hash function")
|
||||
}
|
||||
h = hashFunc.New()
|
||||
|
||||
// RFC 4880, section 5.2.4
|
||||
pk.SerializeSignaturePrefix(h)
|
||||
pk.serializeWithoutHeaders(h)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// VerifyRevocationSignature returns nil iff sig is a valid signature, made by this
|
||||
// public key.
|
||||
func (pk *PublicKey) VerifyRevocationSignature(sig *Signature) (err error) {
|
||||
h, err := keyRevocationHash(pk, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return pk.VerifySignature(h, sig)
|
||||
}
|
||||
|
||||
// userIdSignatureHash returns a Hash of the message that needs to be signed
|
||||
// to assert that pk is a valid key for id.
|
||||
func userIdSignatureHash(id string, pk *PublicKey, hashFunc crypto.Hash) (h hash.Hash, err error) {
|
||||
if !hashFunc.Available() {
|
||||
return nil, errors.UnsupportedError("hash function")
|
||||
}
|
||||
h = hashFunc.New()
|
||||
|
||||
// RFC 4880, section 5.2.4
|
||||
pk.SerializeSignaturePrefix(h)
|
||||
pk.serializeWithoutHeaders(h)
|
||||
|
||||
var buf [5]byte
|
||||
buf[0] = 0xb4
|
||||
buf[1] = byte(len(id) >> 24)
|
||||
buf[2] = byte(len(id) >> 16)
|
||||
buf[3] = byte(len(id) >> 8)
|
||||
buf[4] = byte(len(id))
|
||||
h.Write(buf[:])
|
||||
h.Write([]byte(id))
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// VerifyUserIdSignature returns nil iff sig is a valid signature, made by this
|
||||
// public key, that id is the identity of pub.
|
||||
func (pk *PublicKey) VerifyUserIdSignature(id string, pub *PublicKey, sig *Signature) (err error) {
|
||||
h, err := userIdSignatureHash(id, pub, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return pk.VerifySignature(h, sig)
|
||||
}
|
||||
|
||||
// VerifyUserIdSignatureV3 returns nil iff sig is a valid signature, made by this
|
||||
// public key, that id is the identity of pub.
|
||||
func (pk *PublicKey) VerifyUserIdSignatureV3(id string, pub *PublicKey, sig *SignatureV3) (err error) {
|
||||
h, err := userIdSignatureV3Hash(id, pub, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return pk.VerifySignatureV3(h, sig)
|
||||
}
|
||||
|
||||
// KeyIdString returns the public key's fingerprint in capital hex
|
||||
// (e.g. "6C7EE1B8621CC013").
|
||||
func (pk *PublicKey) KeyIdString() string {
|
||||
return fmt.Sprintf("%X", pk.Fingerprint[12:20])
|
||||
}
|
||||
|
||||
// KeyIdShortString returns the short form of public key's fingerprint
|
||||
// in capital hex, as shown by gpg --list-keys (e.g. "621CC013").
|
||||
func (pk *PublicKey) KeyIdShortString() string {
|
||||
return fmt.Sprintf("%X", pk.Fingerprint[16:20])
|
||||
}
|
||||
|
||||
// A parsedMPI is used to store the contents of a big integer, along with the
|
||||
// bit length that was specified in the original input. This allows the MPI to
|
||||
// be reserialized exactly.
|
||||
type parsedMPI struct {
|
||||
bytes []byte
|
||||
bitLength uint16
|
||||
}
|
||||
|
||||
// writeMPIs is a utility function for serializing several big integers to the
|
||||
// given Writer.
|
||||
func writeMPIs(w io.Writer, mpis ...parsedMPI) (err error) {
|
||||
for _, mpi := range mpis {
|
||||
err = writeMPI(w, mpi.bitLength, mpi.bytes)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// BitLength returns the bit length for the given public key.
|
||||
func (pk *PublicKey) BitLength() (bitLength uint16, err error) {
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
bitLength = pk.n.bitLength
|
||||
case PubKeyAlgoDSA:
|
||||
bitLength = pk.p.bitLength
|
||||
case PubKeyAlgoElGamal:
|
||||
bitLength = pk.p.bitLength
|
||||
default:
|
||||
err = errors.InvalidArgumentError("bad public-key algorithm")
|
||||
}
|
||||
return
|
||||
}
|
||||
279
vendor/golang.org/x/crypto/openpgp/packet/public_key_v3.go
generated
vendored
Normal file
279
vendor/golang.org/x/crypto/openpgp/packet/public_key_v3.go
generated
vendored
Normal file
@ -0,0 +1,279 @@
|
||||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/md5"
|
||||
"crypto/rsa"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"hash"
|
||||
"io"
|
||||
"math/big"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
)
|
||||
|
||||
// PublicKeyV3 represents older, version 3 public keys. These keys are less secure and
|
||||
// should not be used for signing or encrypting. They are supported here only for
|
||||
// parsing version 3 key material and validating signatures.
|
||||
// See RFC 4880, section 5.5.2.
|
||||
type PublicKeyV3 struct {
|
||||
CreationTime time.Time
|
||||
DaysToExpire uint16
|
||||
PubKeyAlgo PublicKeyAlgorithm
|
||||
PublicKey *rsa.PublicKey
|
||||
Fingerprint [16]byte
|
||||
KeyId uint64
|
||||
IsSubkey bool
|
||||
|
||||
n, e parsedMPI
|
||||
}
|
||||
|
||||
// newRSAPublicKeyV3 returns a PublicKey that wraps the given rsa.PublicKey.
|
||||
// Included here for testing purposes only. RFC 4880, section 5.5.2:
|
||||
// "an implementation MUST NOT generate a V3 key, but MAY accept it."
|
||||
func newRSAPublicKeyV3(creationTime time.Time, pub *rsa.PublicKey) *PublicKeyV3 {
|
||||
pk := &PublicKeyV3{
|
||||
CreationTime: creationTime,
|
||||
PublicKey: pub,
|
||||
n: fromBig(pub.N),
|
||||
e: fromBig(big.NewInt(int64(pub.E))),
|
||||
}
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return pk
|
||||
}
|
||||
|
||||
func (pk *PublicKeyV3) parse(r io.Reader) (err error) {
|
||||
// RFC 4880, section 5.5.2
|
||||
var buf [8]byte
|
||||
if _, err = readFull(r, buf[:]); err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] < 2 || buf[0] > 3 {
|
||||
return errors.UnsupportedError("public key version")
|
||||
}
|
||||
pk.CreationTime = time.Unix(int64(uint32(buf[1])<<24|uint32(buf[2])<<16|uint32(buf[3])<<8|uint32(buf[4])), 0)
|
||||
pk.DaysToExpire = binary.BigEndian.Uint16(buf[5:7])
|
||||
pk.PubKeyAlgo = PublicKeyAlgorithm(buf[7])
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
err = pk.parseRSA(r)
|
||||
default:
|
||||
err = errors.UnsupportedError("public key type: " + strconv.Itoa(int(pk.PubKeyAlgo)))
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
pk.setFingerPrintAndKeyId()
|
||||
return
|
||||
}
|
||||
|
||||
func (pk *PublicKeyV3) setFingerPrintAndKeyId() {
|
||||
// RFC 4880, section 12.2
|
||||
fingerPrint := md5.New()
|
||||
fingerPrint.Write(pk.n.bytes)
|
||||
fingerPrint.Write(pk.e.bytes)
|
||||
fingerPrint.Sum(pk.Fingerprint[:0])
|
||||
pk.KeyId = binary.BigEndian.Uint64(pk.n.bytes[len(pk.n.bytes)-8:])
|
||||
}
|
||||
|
||||
// parseRSA parses RSA public key material from the given Reader. See RFC 4880,
|
||||
// section 5.5.2.
|
||||
func (pk *PublicKeyV3) parseRSA(r io.Reader) (err error) {
|
||||
if pk.n.bytes, pk.n.bitLength, err = readMPI(r); err != nil {
|
||||
return
|
||||
}
|
||||
if pk.e.bytes, pk.e.bitLength, err = readMPI(r); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// RFC 4880 Section 12.2 requires the low 8 bytes of the
|
||||
// modulus to form the key id.
|
||||
if len(pk.n.bytes) < 8 {
|
||||
return errors.StructuralError("v3 public key modulus is too short")
|
||||
}
|
||||
if len(pk.e.bytes) > 3 {
|
||||
err = errors.UnsupportedError("large public exponent")
|
||||
return
|
||||
}
|
||||
rsa := &rsa.PublicKey{N: new(big.Int).SetBytes(pk.n.bytes)}
|
||||
for i := 0; i < len(pk.e.bytes); i++ {
|
||||
rsa.E <<= 8
|
||||
rsa.E |= int(pk.e.bytes[i])
|
||||
}
|
||||
pk.PublicKey = rsa
|
||||
return
|
||||
}
|
||||
|
||||
// SerializeSignaturePrefix writes the prefix for this public key to the given Writer.
|
||||
// The prefix is used when calculating a signature over this public key. See
|
||||
// RFC 4880, section 5.2.4.
|
||||
func (pk *PublicKeyV3) SerializeSignaturePrefix(w io.Writer) {
|
||||
var pLength uint16
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
pLength += 2 + uint16(len(pk.n.bytes))
|
||||
pLength += 2 + uint16(len(pk.e.bytes))
|
||||
default:
|
||||
panic("unknown public key algorithm")
|
||||
}
|
||||
pLength += 6
|
||||
w.Write([]byte{0x99, byte(pLength >> 8), byte(pLength)})
|
||||
return
|
||||
}
|
||||
|
||||
func (pk *PublicKeyV3) Serialize(w io.Writer) (err error) {
|
||||
length := 8 // 8 byte header
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
length += 2 + len(pk.n.bytes)
|
||||
length += 2 + len(pk.e.bytes)
|
||||
default:
|
||||
panic("unknown public key algorithm")
|
||||
}
|
||||
|
||||
packetType := packetTypePublicKey
|
||||
if pk.IsSubkey {
|
||||
packetType = packetTypePublicSubkey
|
||||
}
|
||||
if err = serializeHeader(w, packetType, length); err != nil {
|
||||
return
|
||||
}
|
||||
return pk.serializeWithoutHeaders(w)
|
||||
}
|
||||
|
||||
// serializeWithoutHeaders marshals the PublicKey to w in the form of an
|
||||
// OpenPGP public key packet, not including the packet header.
|
||||
func (pk *PublicKeyV3) serializeWithoutHeaders(w io.Writer) (err error) {
|
||||
var buf [8]byte
|
||||
// Version 3
|
||||
buf[0] = 3
|
||||
// Creation time
|
||||
t := uint32(pk.CreationTime.Unix())
|
||||
buf[1] = byte(t >> 24)
|
||||
buf[2] = byte(t >> 16)
|
||||
buf[3] = byte(t >> 8)
|
||||
buf[4] = byte(t)
|
||||
// Days to expire
|
||||
buf[5] = byte(pk.DaysToExpire >> 8)
|
||||
buf[6] = byte(pk.DaysToExpire)
|
||||
// Public key algorithm
|
||||
buf[7] = byte(pk.PubKeyAlgo)
|
||||
|
||||
if _, err = w.Write(buf[:]); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
return writeMPIs(w, pk.n, pk.e)
|
||||
}
|
||||
return errors.InvalidArgumentError("bad public-key algorithm")
|
||||
}
|
||||
|
||||
// CanSign returns true iff this public key can generate signatures
|
||||
func (pk *PublicKeyV3) CanSign() bool {
|
||||
return pk.PubKeyAlgo != PubKeyAlgoRSAEncryptOnly
|
||||
}
|
||||
|
||||
// VerifySignatureV3 returns nil iff sig is a valid signature, made by this
|
||||
// public key, of the data hashed into signed. signed is mutated by this call.
|
||||
func (pk *PublicKeyV3) VerifySignatureV3(signed hash.Hash, sig *SignatureV3) (err error) {
|
||||
if !pk.CanSign() {
|
||||
return errors.InvalidArgumentError("public key cannot generate signatures")
|
||||
}
|
||||
|
||||
suffix := make([]byte, 5)
|
||||
suffix[0] = byte(sig.SigType)
|
||||
binary.BigEndian.PutUint32(suffix[1:], uint32(sig.CreationTime.Unix()))
|
||||
signed.Write(suffix)
|
||||
hashBytes := signed.Sum(nil)
|
||||
|
||||
if hashBytes[0] != sig.HashTag[0] || hashBytes[1] != sig.HashTag[1] {
|
||||
return errors.SignatureError("hash tag doesn't match")
|
||||
}
|
||||
|
||||
if pk.PubKeyAlgo != sig.PubKeyAlgo {
|
||||
return errors.InvalidArgumentError("public key and signature use different algorithms")
|
||||
}
|
||||
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
if err = rsa.VerifyPKCS1v15(pk.PublicKey, sig.Hash, hashBytes, sig.RSASignature.bytes); err != nil {
|
||||
return errors.SignatureError("RSA verification failure")
|
||||
}
|
||||
return
|
||||
default:
|
||||
// V3 public keys only support RSA.
|
||||
panic("shouldn't happen")
|
||||
}
|
||||
}
|
||||
|
||||
// VerifyUserIdSignatureV3 returns nil iff sig is a valid signature, made by this
|
||||
// public key, that id is the identity of pub.
|
||||
func (pk *PublicKeyV3) VerifyUserIdSignatureV3(id string, pub *PublicKeyV3, sig *SignatureV3) (err error) {
|
||||
h, err := userIdSignatureV3Hash(id, pk, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return pk.VerifySignatureV3(h, sig)
|
||||
}
|
||||
|
||||
// VerifyKeySignatureV3 returns nil iff sig is a valid signature, made by this
|
||||
// public key, of signed.
|
||||
func (pk *PublicKeyV3) VerifyKeySignatureV3(signed *PublicKeyV3, sig *SignatureV3) (err error) {
|
||||
h, err := keySignatureHash(pk, signed, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return pk.VerifySignatureV3(h, sig)
|
||||
}
|
||||
|
||||
// userIdSignatureV3Hash returns a Hash of the message that needs to be signed
|
||||
// to assert that pk is a valid key for id.
|
||||
func userIdSignatureV3Hash(id string, pk signingKey, hfn crypto.Hash) (h hash.Hash, err error) {
|
||||
if !hfn.Available() {
|
||||
return nil, errors.UnsupportedError("hash function")
|
||||
}
|
||||
h = hfn.New()
|
||||
|
||||
// RFC 4880, section 5.2.4
|
||||
pk.SerializeSignaturePrefix(h)
|
||||
pk.serializeWithoutHeaders(h)
|
||||
|
||||
h.Write([]byte(id))
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// KeyIdString returns the public key's fingerprint in capital hex
|
||||
// (e.g. "6C7EE1B8621CC013").
|
||||
func (pk *PublicKeyV3) KeyIdString() string {
|
||||
return fmt.Sprintf("%X", pk.KeyId)
|
||||
}
|
||||
|
||||
// KeyIdShortString returns the short form of public key's fingerprint
|
||||
// in capital hex, as shown by gpg --list-keys (e.g. "621CC013").
|
||||
func (pk *PublicKeyV3) KeyIdShortString() string {
|
||||
return fmt.Sprintf("%X", pk.KeyId&0xFFFFFFFF)
|
||||
}
|
||||
|
||||
// BitLength returns the bit length for the given public key.
|
||||
func (pk *PublicKeyV3) BitLength() (bitLength uint16, err error) {
|
||||
switch pk.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly:
|
||||
bitLength = pk.n.bitLength
|
||||
default:
|
||||
err = errors.InvalidArgumentError("bad public-key algorithm")
|
||||
}
|
||||
return
|
||||
}
|
||||
76
vendor/golang.org/x/crypto/openpgp/packet/reader.go
generated
vendored
Normal file
76
vendor/golang.org/x/crypto/openpgp/packet/reader.go
generated
vendored
Normal file
@ -0,0 +1,76 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"io"
|
||||
)
|
||||
|
||||
// Reader reads packets from an io.Reader and allows packets to be 'unread' so
|
||||
// that they result from the next call to Next.
|
||||
type Reader struct {
|
||||
q []Packet
|
||||
readers []io.Reader
|
||||
}
|
||||
|
||||
// New io.Readers are pushed when a compressed or encrypted packet is processed
|
||||
// and recursively treated as a new source of packets. However, a carefully
|
||||
// crafted packet can trigger an infinite recursive sequence of packets. See
|
||||
// http://mumble.net/~campbell/misc/pgp-quine
|
||||
// https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-4402
|
||||
// This constant limits the number of recursive packets that may be pushed.
|
||||
const maxReaders = 32
|
||||
|
||||
// Next returns the most recently unread Packet, or reads another packet from
|
||||
// the top-most io.Reader. Unknown packet types are skipped.
|
||||
func (r *Reader) Next() (p Packet, err error) {
|
||||
if len(r.q) > 0 {
|
||||
p = r.q[len(r.q)-1]
|
||||
r.q = r.q[:len(r.q)-1]
|
||||
return
|
||||
}
|
||||
|
||||
for len(r.readers) > 0 {
|
||||
p, err = Read(r.readers[len(r.readers)-1])
|
||||
if err == nil {
|
||||
return
|
||||
}
|
||||
if err == io.EOF {
|
||||
r.readers = r.readers[:len(r.readers)-1]
|
||||
continue
|
||||
}
|
||||
if _, ok := err.(errors.UnknownPacketTypeError); !ok {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return nil, io.EOF
|
||||
}
|
||||
|
||||
// Push causes the Reader to start reading from a new io.Reader. When an EOF
|
||||
// error is seen from the new io.Reader, it is popped and the Reader continues
|
||||
// to read from the next most recent io.Reader. Push returns a StructuralError
|
||||
// if pushing the reader would exceed the maximum recursion level, otherwise it
|
||||
// returns nil.
|
||||
func (r *Reader) Push(reader io.Reader) (err error) {
|
||||
if len(r.readers) >= maxReaders {
|
||||
return errors.StructuralError("too many layers of packets")
|
||||
}
|
||||
r.readers = append(r.readers, reader)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Unread causes the given Packet to be returned from the next call to Next.
|
||||
func (r *Reader) Unread(p Packet) {
|
||||
r.q = append(r.q, p)
|
||||
}
|
||||
|
||||
func NewReader(r io.Reader) *Reader {
|
||||
return &Reader{
|
||||
q: nil,
|
||||
readers: []io.Reader{r},
|
||||
}
|
||||
}
|
||||
731
vendor/golang.org/x/crypto/openpgp/packet/signature.go
generated
vendored
Normal file
731
vendor/golang.org/x/crypto/openpgp/packet/signature.go
generated
vendored
Normal file
@ -0,0 +1,731 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/dsa"
|
||||
"crypto/ecdsa"
|
||||
"encoding/asn1"
|
||||
"encoding/binary"
|
||||
"hash"
|
||||
"io"
|
||||
"math/big"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/s2k"
|
||||
)
|
||||
|
||||
const (
|
||||
// See RFC 4880, section 5.2.3.21 for details.
|
||||
KeyFlagCertify = 1 << iota
|
||||
KeyFlagSign
|
||||
KeyFlagEncryptCommunications
|
||||
KeyFlagEncryptStorage
|
||||
)
|
||||
|
||||
// Signature represents a signature. See RFC 4880, section 5.2.
|
||||
type Signature struct {
|
||||
SigType SignatureType
|
||||
PubKeyAlgo PublicKeyAlgorithm
|
||||
Hash crypto.Hash
|
||||
|
||||
// HashSuffix is extra data that is hashed in after the signed data.
|
||||
HashSuffix []byte
|
||||
// HashTag contains the first two bytes of the hash for fast rejection
|
||||
// of bad signed data.
|
||||
HashTag [2]byte
|
||||
CreationTime time.Time
|
||||
|
||||
RSASignature parsedMPI
|
||||
DSASigR, DSASigS parsedMPI
|
||||
ECDSASigR, ECDSASigS parsedMPI
|
||||
|
||||
// rawSubpackets contains the unparsed subpackets, in order.
|
||||
rawSubpackets []outputSubpacket
|
||||
|
||||
// The following are optional so are nil when not included in the
|
||||
// signature.
|
||||
|
||||
SigLifetimeSecs, KeyLifetimeSecs *uint32
|
||||
PreferredSymmetric, PreferredHash, PreferredCompression []uint8
|
||||
IssuerKeyId *uint64
|
||||
IsPrimaryId *bool
|
||||
|
||||
// FlagsValid is set if any flags were given. See RFC 4880, section
|
||||
// 5.2.3.21 for details.
|
||||
FlagsValid bool
|
||||
FlagCertify, FlagSign, FlagEncryptCommunications, FlagEncryptStorage bool
|
||||
|
||||
// RevocationReason is set if this signature has been revoked.
|
||||
// See RFC 4880, section 5.2.3.23 for details.
|
||||
RevocationReason *uint8
|
||||
RevocationReasonText string
|
||||
|
||||
// MDC is set if this signature has a feature packet that indicates
|
||||
// support for MDC subpackets.
|
||||
MDC bool
|
||||
|
||||
// EmbeddedSignature, if non-nil, is a signature of the parent key, by
|
||||
// this key. This prevents an attacker from claiming another's signing
|
||||
// subkey as their own.
|
||||
EmbeddedSignature *Signature
|
||||
|
||||
outSubpackets []outputSubpacket
|
||||
}
|
||||
|
||||
func (sig *Signature) parse(r io.Reader) (err error) {
|
||||
// RFC 4880, section 5.2.3
|
||||
var buf [5]byte
|
||||
_, err = readFull(r, buf[:1])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] != 4 {
|
||||
err = errors.UnsupportedError("signature packet version " + strconv.Itoa(int(buf[0])))
|
||||
return
|
||||
}
|
||||
|
||||
_, err = readFull(r, buf[:5])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
sig.SigType = SignatureType(buf[0])
|
||||
sig.PubKeyAlgo = PublicKeyAlgorithm(buf[1])
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA, PubKeyAlgoECDSA:
|
||||
default:
|
||||
err = errors.UnsupportedError("public key algorithm " + strconv.Itoa(int(sig.PubKeyAlgo)))
|
||||
return
|
||||
}
|
||||
|
||||
var ok bool
|
||||
sig.Hash, ok = s2k.HashIdToHash(buf[2])
|
||||
if !ok {
|
||||
return errors.UnsupportedError("hash function " + strconv.Itoa(int(buf[2])))
|
||||
}
|
||||
|
||||
hashedSubpacketsLength := int(buf[3])<<8 | int(buf[4])
|
||||
l := 6 + hashedSubpacketsLength
|
||||
sig.HashSuffix = make([]byte, l+6)
|
||||
sig.HashSuffix[0] = 4
|
||||
copy(sig.HashSuffix[1:], buf[:5])
|
||||
hashedSubpackets := sig.HashSuffix[6:l]
|
||||
_, err = readFull(r, hashedSubpackets)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
// See RFC 4880, section 5.2.4
|
||||
trailer := sig.HashSuffix[l:]
|
||||
trailer[0] = 4
|
||||
trailer[1] = 0xff
|
||||
trailer[2] = uint8(l >> 24)
|
||||
trailer[3] = uint8(l >> 16)
|
||||
trailer[4] = uint8(l >> 8)
|
||||
trailer[5] = uint8(l)
|
||||
|
||||
err = parseSignatureSubpackets(sig, hashedSubpackets, true)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = readFull(r, buf[:2])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
unhashedSubpacketsLength := int(buf[0])<<8 | int(buf[1])
|
||||
unhashedSubpackets := make([]byte, unhashedSubpacketsLength)
|
||||
_, err = readFull(r, unhashedSubpackets)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = parseSignatureSubpackets(sig, unhashedSubpackets, false)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = readFull(r, sig.HashTag[:2])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
sig.RSASignature.bytes, sig.RSASignature.bitLength, err = readMPI(r)
|
||||
case PubKeyAlgoDSA:
|
||||
sig.DSASigR.bytes, sig.DSASigR.bitLength, err = readMPI(r)
|
||||
if err == nil {
|
||||
sig.DSASigS.bytes, sig.DSASigS.bitLength, err = readMPI(r)
|
||||
}
|
||||
case PubKeyAlgoECDSA:
|
||||
sig.ECDSASigR.bytes, sig.ECDSASigR.bitLength, err = readMPI(r)
|
||||
if err == nil {
|
||||
sig.ECDSASigS.bytes, sig.ECDSASigS.bitLength, err = readMPI(r)
|
||||
}
|
||||
default:
|
||||
panic("unreachable")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// parseSignatureSubpackets parses subpackets of the main signature packet. See
|
||||
// RFC 4880, section 5.2.3.1.
|
||||
func parseSignatureSubpackets(sig *Signature, subpackets []byte, isHashed bool) (err error) {
|
||||
for len(subpackets) > 0 {
|
||||
subpackets, err = parseSignatureSubpacket(sig, subpackets, isHashed)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if sig.CreationTime.IsZero() {
|
||||
err = errors.StructuralError("no creation time in signature")
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
type signatureSubpacketType uint8
|
||||
|
||||
const (
|
||||
creationTimeSubpacket signatureSubpacketType = 2
|
||||
signatureExpirationSubpacket signatureSubpacketType = 3
|
||||
keyExpirationSubpacket signatureSubpacketType = 9
|
||||
prefSymmetricAlgosSubpacket signatureSubpacketType = 11
|
||||
issuerSubpacket signatureSubpacketType = 16
|
||||
prefHashAlgosSubpacket signatureSubpacketType = 21
|
||||
prefCompressionSubpacket signatureSubpacketType = 22
|
||||
primaryUserIdSubpacket signatureSubpacketType = 25
|
||||
keyFlagsSubpacket signatureSubpacketType = 27
|
||||
reasonForRevocationSubpacket signatureSubpacketType = 29
|
||||
featuresSubpacket signatureSubpacketType = 30
|
||||
embeddedSignatureSubpacket signatureSubpacketType = 32
|
||||
)
|
||||
|
||||
// parseSignatureSubpacket parses a single subpacket. len(subpacket) is >= 1.
|
||||
func parseSignatureSubpacket(sig *Signature, subpacket []byte, isHashed bool) (rest []byte, err error) {
|
||||
// RFC 4880, section 5.2.3.1
|
||||
var (
|
||||
length uint32
|
||||
packetType signatureSubpacketType
|
||||
isCritical bool
|
||||
)
|
||||
switch {
|
||||
case subpacket[0] < 192:
|
||||
length = uint32(subpacket[0])
|
||||
subpacket = subpacket[1:]
|
||||
case subpacket[0] < 255:
|
||||
if len(subpacket) < 2 {
|
||||
goto Truncated
|
||||
}
|
||||
length = uint32(subpacket[0]-192)<<8 + uint32(subpacket[1]) + 192
|
||||
subpacket = subpacket[2:]
|
||||
default:
|
||||
if len(subpacket) < 5 {
|
||||
goto Truncated
|
||||
}
|
||||
length = uint32(subpacket[1])<<24 |
|
||||
uint32(subpacket[2])<<16 |
|
||||
uint32(subpacket[3])<<8 |
|
||||
uint32(subpacket[4])
|
||||
subpacket = subpacket[5:]
|
||||
}
|
||||
if length > uint32(len(subpacket)) {
|
||||
goto Truncated
|
||||
}
|
||||
rest = subpacket[length:]
|
||||
subpacket = subpacket[:length]
|
||||
if len(subpacket) == 0 {
|
||||
err = errors.StructuralError("zero length signature subpacket")
|
||||
return
|
||||
}
|
||||
packetType = signatureSubpacketType(subpacket[0] & 0x7f)
|
||||
isCritical = subpacket[0]&0x80 == 0x80
|
||||
subpacket = subpacket[1:]
|
||||
sig.rawSubpackets = append(sig.rawSubpackets, outputSubpacket{isHashed, packetType, isCritical, subpacket})
|
||||
switch packetType {
|
||||
case creationTimeSubpacket:
|
||||
if !isHashed {
|
||||
err = errors.StructuralError("signature creation time in non-hashed area")
|
||||
return
|
||||
}
|
||||
if len(subpacket) != 4 {
|
||||
err = errors.StructuralError("signature creation time not four bytes")
|
||||
return
|
||||
}
|
||||
t := binary.BigEndian.Uint32(subpacket)
|
||||
sig.CreationTime = time.Unix(int64(t), 0)
|
||||
case signatureExpirationSubpacket:
|
||||
// Signature expiration time, section 5.2.3.10
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
if len(subpacket) != 4 {
|
||||
err = errors.StructuralError("expiration subpacket with bad length")
|
||||
return
|
||||
}
|
||||
sig.SigLifetimeSecs = new(uint32)
|
||||
*sig.SigLifetimeSecs = binary.BigEndian.Uint32(subpacket)
|
||||
case keyExpirationSubpacket:
|
||||
// Key expiration time, section 5.2.3.6
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
if len(subpacket) != 4 {
|
||||
err = errors.StructuralError("key expiration subpacket with bad length")
|
||||
return
|
||||
}
|
||||
sig.KeyLifetimeSecs = new(uint32)
|
||||
*sig.KeyLifetimeSecs = binary.BigEndian.Uint32(subpacket)
|
||||
case prefSymmetricAlgosSubpacket:
|
||||
// Preferred symmetric algorithms, section 5.2.3.7
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
sig.PreferredSymmetric = make([]byte, len(subpacket))
|
||||
copy(sig.PreferredSymmetric, subpacket)
|
||||
case issuerSubpacket:
|
||||
// Issuer, section 5.2.3.5
|
||||
if len(subpacket) != 8 {
|
||||
err = errors.StructuralError("issuer subpacket with bad length")
|
||||
return
|
||||
}
|
||||
sig.IssuerKeyId = new(uint64)
|
||||
*sig.IssuerKeyId = binary.BigEndian.Uint64(subpacket)
|
||||
case prefHashAlgosSubpacket:
|
||||
// Preferred hash algorithms, section 5.2.3.8
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
sig.PreferredHash = make([]byte, len(subpacket))
|
||||
copy(sig.PreferredHash, subpacket)
|
||||
case prefCompressionSubpacket:
|
||||
// Preferred compression algorithms, section 5.2.3.9
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
sig.PreferredCompression = make([]byte, len(subpacket))
|
||||
copy(sig.PreferredCompression, subpacket)
|
||||
case primaryUserIdSubpacket:
|
||||
// Primary User ID, section 5.2.3.19
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
if len(subpacket) != 1 {
|
||||
err = errors.StructuralError("primary user id subpacket with bad length")
|
||||
return
|
||||
}
|
||||
sig.IsPrimaryId = new(bool)
|
||||
if subpacket[0] > 0 {
|
||||
*sig.IsPrimaryId = true
|
||||
}
|
||||
case keyFlagsSubpacket:
|
||||
// Key flags, section 5.2.3.21
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
if len(subpacket) == 0 {
|
||||
err = errors.StructuralError("empty key flags subpacket")
|
||||
return
|
||||
}
|
||||
sig.FlagsValid = true
|
||||
if subpacket[0]&KeyFlagCertify != 0 {
|
||||
sig.FlagCertify = true
|
||||
}
|
||||
if subpacket[0]&KeyFlagSign != 0 {
|
||||
sig.FlagSign = true
|
||||
}
|
||||
if subpacket[0]&KeyFlagEncryptCommunications != 0 {
|
||||
sig.FlagEncryptCommunications = true
|
||||
}
|
||||
if subpacket[0]&KeyFlagEncryptStorage != 0 {
|
||||
sig.FlagEncryptStorage = true
|
||||
}
|
||||
case reasonForRevocationSubpacket:
|
||||
// Reason For Revocation, section 5.2.3.23
|
||||
if !isHashed {
|
||||
return
|
||||
}
|
||||
if len(subpacket) == 0 {
|
||||
err = errors.StructuralError("empty revocation reason subpacket")
|
||||
return
|
||||
}
|
||||
sig.RevocationReason = new(uint8)
|
||||
*sig.RevocationReason = subpacket[0]
|
||||
sig.RevocationReasonText = string(subpacket[1:])
|
||||
case featuresSubpacket:
|
||||
// Features subpacket, section 5.2.3.24 specifies a very general
|
||||
// mechanism for OpenPGP implementations to signal support for new
|
||||
// features. In practice, the subpacket is used exclusively to
|
||||
// indicate support for MDC-protected encryption.
|
||||
sig.MDC = len(subpacket) >= 1 && subpacket[0]&1 == 1
|
||||
case embeddedSignatureSubpacket:
|
||||
// Only usage is in signatures that cross-certify
|
||||
// signing subkeys. section 5.2.3.26 describes the
|
||||
// format, with its usage described in section 11.1
|
||||
if sig.EmbeddedSignature != nil {
|
||||
err = errors.StructuralError("Cannot have multiple embedded signatures")
|
||||
return
|
||||
}
|
||||
sig.EmbeddedSignature = new(Signature)
|
||||
// Embedded signatures are required to be v4 signatures see
|
||||
// section 12.1. However, we only parse v4 signatures in this
|
||||
// file anyway.
|
||||
if err := sig.EmbeddedSignature.parse(bytes.NewBuffer(subpacket)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if sigType := sig.EmbeddedSignature.SigType; sigType != SigTypePrimaryKeyBinding {
|
||||
return nil, errors.StructuralError("cross-signature has unexpected type " + strconv.Itoa(int(sigType)))
|
||||
}
|
||||
default:
|
||||
if isCritical {
|
||||
err = errors.UnsupportedError("unknown critical signature subpacket type " + strconv.Itoa(int(packetType)))
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
|
||||
Truncated:
|
||||
err = errors.StructuralError("signature subpacket truncated")
|
||||
return
|
||||
}
|
||||
|
||||
// subpacketLengthLength returns the length, in bytes, of an encoded length value.
|
||||
func subpacketLengthLength(length int) int {
|
||||
if length < 192 {
|
||||
return 1
|
||||
}
|
||||
if length < 16320 {
|
||||
return 2
|
||||
}
|
||||
return 5
|
||||
}
|
||||
|
||||
// serializeSubpacketLength marshals the given length into to.
|
||||
func serializeSubpacketLength(to []byte, length int) int {
|
||||
// RFC 4880, Section 4.2.2.
|
||||
if length < 192 {
|
||||
to[0] = byte(length)
|
||||
return 1
|
||||
}
|
||||
if length < 16320 {
|
||||
length -= 192
|
||||
to[0] = byte((length >> 8) + 192)
|
||||
to[1] = byte(length)
|
||||
return 2
|
||||
}
|
||||
to[0] = 255
|
||||
to[1] = byte(length >> 24)
|
||||
to[2] = byte(length >> 16)
|
||||
to[3] = byte(length >> 8)
|
||||
to[4] = byte(length)
|
||||
return 5
|
||||
}
|
||||
|
||||
// subpacketsLength returns the serialized length, in bytes, of the given
|
||||
// subpackets.
|
||||
func subpacketsLength(subpackets []outputSubpacket, hashed bool) (length int) {
|
||||
for _, subpacket := range subpackets {
|
||||
if subpacket.hashed == hashed {
|
||||
length += subpacketLengthLength(len(subpacket.contents) + 1)
|
||||
length += 1 // type byte
|
||||
length += len(subpacket.contents)
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// serializeSubpackets marshals the given subpackets into to.
|
||||
func serializeSubpackets(to []byte, subpackets []outputSubpacket, hashed bool) {
|
||||
for _, subpacket := range subpackets {
|
||||
if subpacket.hashed == hashed {
|
||||
n := serializeSubpacketLength(to, len(subpacket.contents)+1)
|
||||
to[n] = byte(subpacket.subpacketType)
|
||||
to = to[1+n:]
|
||||
n = copy(to, subpacket.contents)
|
||||
to = to[n:]
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// KeyExpired returns whether sig is a self-signature of a key that has
|
||||
// expired.
|
||||
func (sig *Signature) KeyExpired(currentTime time.Time) bool {
|
||||
if sig.KeyLifetimeSecs == nil {
|
||||
return false
|
||||
}
|
||||
expiry := sig.CreationTime.Add(time.Duration(*sig.KeyLifetimeSecs) * time.Second)
|
||||
return currentTime.After(expiry)
|
||||
}
|
||||
|
||||
// buildHashSuffix constructs the HashSuffix member of sig in preparation for signing.
|
||||
func (sig *Signature) buildHashSuffix() (err error) {
|
||||
hashedSubpacketsLen := subpacketsLength(sig.outSubpackets, true)
|
||||
|
||||
var ok bool
|
||||
l := 6 + hashedSubpacketsLen
|
||||
sig.HashSuffix = make([]byte, l+6)
|
||||
sig.HashSuffix[0] = 4
|
||||
sig.HashSuffix[1] = uint8(sig.SigType)
|
||||
sig.HashSuffix[2] = uint8(sig.PubKeyAlgo)
|
||||
sig.HashSuffix[3], ok = s2k.HashToHashId(sig.Hash)
|
||||
if !ok {
|
||||
sig.HashSuffix = nil
|
||||
return errors.InvalidArgumentError("hash cannot be represented in OpenPGP: " + strconv.Itoa(int(sig.Hash)))
|
||||
}
|
||||
sig.HashSuffix[4] = byte(hashedSubpacketsLen >> 8)
|
||||
sig.HashSuffix[5] = byte(hashedSubpacketsLen)
|
||||
serializeSubpackets(sig.HashSuffix[6:l], sig.outSubpackets, true)
|
||||
trailer := sig.HashSuffix[l:]
|
||||
trailer[0] = 4
|
||||
trailer[1] = 0xff
|
||||
trailer[2] = byte(l >> 24)
|
||||
trailer[3] = byte(l >> 16)
|
||||
trailer[4] = byte(l >> 8)
|
||||
trailer[5] = byte(l)
|
||||
return
|
||||
}
|
||||
|
||||
func (sig *Signature) signPrepareHash(h hash.Hash) (digest []byte, err error) {
|
||||
err = sig.buildHashSuffix()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
h.Write(sig.HashSuffix)
|
||||
digest = h.Sum(nil)
|
||||
copy(sig.HashTag[:], digest)
|
||||
return
|
||||
}
|
||||
|
||||
// Sign signs a message with a private key. The hash, h, must contain
|
||||
// the hash of the message to be signed and will be mutated by this function.
|
||||
// On success, the signature is stored in sig. Call Serialize to write it out.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func (sig *Signature) Sign(h hash.Hash, priv *PrivateKey, config *Config) (err error) {
|
||||
sig.outSubpackets = sig.buildSubpackets()
|
||||
digest, err := sig.signPrepareHash(h)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch priv.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
// supports both *rsa.PrivateKey and crypto.Signer
|
||||
sig.RSASignature.bytes, err = priv.PrivateKey.(crypto.Signer).Sign(config.Random(), digest, sig.Hash)
|
||||
sig.RSASignature.bitLength = uint16(8 * len(sig.RSASignature.bytes))
|
||||
case PubKeyAlgoDSA:
|
||||
dsaPriv := priv.PrivateKey.(*dsa.PrivateKey)
|
||||
|
||||
// Need to truncate hashBytes to match FIPS 186-3 section 4.6.
|
||||
subgroupSize := (dsaPriv.Q.BitLen() + 7) / 8
|
||||
if len(digest) > subgroupSize {
|
||||
digest = digest[:subgroupSize]
|
||||
}
|
||||
r, s, err := dsa.Sign(config.Random(), dsaPriv, digest)
|
||||
if err == nil {
|
||||
sig.DSASigR.bytes = r.Bytes()
|
||||
sig.DSASigR.bitLength = uint16(8 * len(sig.DSASigR.bytes))
|
||||
sig.DSASigS.bytes = s.Bytes()
|
||||
sig.DSASigS.bitLength = uint16(8 * len(sig.DSASigS.bytes))
|
||||
}
|
||||
case PubKeyAlgoECDSA:
|
||||
var r, s *big.Int
|
||||
if pk, ok := priv.PrivateKey.(*ecdsa.PrivateKey); ok {
|
||||
// direct support, avoid asn1 wrapping/unwrapping
|
||||
r, s, err = ecdsa.Sign(config.Random(), pk, digest)
|
||||
} else {
|
||||
var b []byte
|
||||
b, err = priv.PrivateKey.(crypto.Signer).Sign(config.Random(), digest, sig.Hash)
|
||||
if err == nil {
|
||||
r, s, err = unwrapECDSASig(b)
|
||||
}
|
||||
}
|
||||
if err == nil {
|
||||
sig.ECDSASigR = fromBig(r)
|
||||
sig.ECDSASigS = fromBig(s)
|
||||
}
|
||||
default:
|
||||
err = errors.UnsupportedError("public key algorithm: " + strconv.Itoa(int(sig.PubKeyAlgo)))
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// unwrapECDSASig parses the two integer components of an ASN.1-encoded ECDSA
|
||||
// signature.
|
||||
func unwrapECDSASig(b []byte) (r, s *big.Int, err error) {
|
||||
var ecsdaSig struct {
|
||||
R, S *big.Int
|
||||
}
|
||||
_, err = asn1.Unmarshal(b, &ecsdaSig)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return ecsdaSig.R, ecsdaSig.S, nil
|
||||
}
|
||||
|
||||
// SignUserId computes a signature from priv, asserting that pub is a valid
|
||||
// key for the identity id. On success, the signature is stored in sig. Call
|
||||
// Serialize to write it out.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func (sig *Signature) SignUserId(id string, pub *PublicKey, priv *PrivateKey, config *Config) error {
|
||||
h, err := userIdSignatureHash(id, pub, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return sig.Sign(h, priv, config)
|
||||
}
|
||||
|
||||
// SignKey computes a signature from priv, asserting that pub is a subkey. On
|
||||
// success, the signature is stored in sig. Call Serialize to write it out.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func (sig *Signature) SignKey(pub *PublicKey, priv *PrivateKey, config *Config) error {
|
||||
h, err := keySignatureHash(&priv.PublicKey, pub, sig.Hash)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return sig.Sign(h, priv, config)
|
||||
}
|
||||
|
||||
// Serialize marshals sig to w. Sign, SignUserId or SignKey must have been
|
||||
// called first.
|
||||
func (sig *Signature) Serialize(w io.Writer) (err error) {
|
||||
if len(sig.outSubpackets) == 0 {
|
||||
sig.outSubpackets = sig.rawSubpackets
|
||||
}
|
||||
if sig.RSASignature.bytes == nil && sig.DSASigR.bytes == nil && sig.ECDSASigR.bytes == nil {
|
||||
return errors.InvalidArgumentError("Signature: need to call Sign, SignUserId or SignKey before Serialize")
|
||||
}
|
||||
|
||||
sigLength := 0
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
sigLength = 2 + len(sig.RSASignature.bytes)
|
||||
case PubKeyAlgoDSA:
|
||||
sigLength = 2 + len(sig.DSASigR.bytes)
|
||||
sigLength += 2 + len(sig.DSASigS.bytes)
|
||||
case PubKeyAlgoECDSA:
|
||||
sigLength = 2 + len(sig.ECDSASigR.bytes)
|
||||
sigLength += 2 + len(sig.ECDSASigS.bytes)
|
||||
default:
|
||||
panic("impossible")
|
||||
}
|
||||
|
||||
unhashedSubpacketsLen := subpacketsLength(sig.outSubpackets, false)
|
||||
length := len(sig.HashSuffix) - 6 /* trailer not included */ +
|
||||
2 /* length of unhashed subpackets */ + unhashedSubpacketsLen +
|
||||
2 /* hash tag */ + sigLength
|
||||
err = serializeHeader(w, packetTypeSignature, length)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = w.Write(sig.HashSuffix[:len(sig.HashSuffix)-6])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
unhashedSubpackets := make([]byte, 2+unhashedSubpacketsLen)
|
||||
unhashedSubpackets[0] = byte(unhashedSubpacketsLen >> 8)
|
||||
unhashedSubpackets[1] = byte(unhashedSubpacketsLen)
|
||||
serializeSubpackets(unhashedSubpackets[2:], sig.outSubpackets, false)
|
||||
|
||||
_, err = w.Write(unhashedSubpackets)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
_, err = w.Write(sig.HashTag[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
err = writeMPIs(w, sig.RSASignature)
|
||||
case PubKeyAlgoDSA:
|
||||
err = writeMPIs(w, sig.DSASigR, sig.DSASigS)
|
||||
case PubKeyAlgoECDSA:
|
||||
err = writeMPIs(w, sig.ECDSASigR, sig.ECDSASigS)
|
||||
default:
|
||||
panic("impossible")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// outputSubpacket represents a subpacket to be marshaled.
|
||||
type outputSubpacket struct {
|
||||
hashed bool // true if this subpacket is in the hashed area.
|
||||
subpacketType signatureSubpacketType
|
||||
isCritical bool
|
||||
contents []byte
|
||||
}
|
||||
|
||||
func (sig *Signature) buildSubpackets() (subpackets []outputSubpacket) {
|
||||
creationTime := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(creationTime, uint32(sig.CreationTime.Unix()))
|
||||
subpackets = append(subpackets, outputSubpacket{true, creationTimeSubpacket, false, creationTime})
|
||||
|
||||
if sig.IssuerKeyId != nil {
|
||||
keyId := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(keyId, *sig.IssuerKeyId)
|
||||
subpackets = append(subpackets, outputSubpacket{true, issuerSubpacket, false, keyId})
|
||||
}
|
||||
|
||||
if sig.SigLifetimeSecs != nil && *sig.SigLifetimeSecs != 0 {
|
||||
sigLifetime := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(sigLifetime, *sig.SigLifetimeSecs)
|
||||
subpackets = append(subpackets, outputSubpacket{true, signatureExpirationSubpacket, true, sigLifetime})
|
||||
}
|
||||
|
||||
// Key flags may only appear in self-signatures or certification signatures.
|
||||
|
||||
if sig.FlagsValid {
|
||||
var flags byte
|
||||
if sig.FlagCertify {
|
||||
flags |= KeyFlagCertify
|
||||
}
|
||||
if sig.FlagSign {
|
||||
flags |= KeyFlagSign
|
||||
}
|
||||
if sig.FlagEncryptCommunications {
|
||||
flags |= KeyFlagEncryptCommunications
|
||||
}
|
||||
if sig.FlagEncryptStorage {
|
||||
flags |= KeyFlagEncryptStorage
|
||||
}
|
||||
subpackets = append(subpackets, outputSubpacket{true, keyFlagsSubpacket, false, []byte{flags}})
|
||||
}
|
||||
|
||||
// The following subpackets may only appear in self-signatures
|
||||
|
||||
if sig.KeyLifetimeSecs != nil && *sig.KeyLifetimeSecs != 0 {
|
||||
keyLifetime := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(keyLifetime, *sig.KeyLifetimeSecs)
|
||||
subpackets = append(subpackets, outputSubpacket{true, keyExpirationSubpacket, true, keyLifetime})
|
||||
}
|
||||
|
||||
if sig.IsPrimaryId != nil && *sig.IsPrimaryId {
|
||||
subpackets = append(subpackets, outputSubpacket{true, primaryUserIdSubpacket, false, []byte{1}})
|
||||
}
|
||||
|
||||
if len(sig.PreferredSymmetric) > 0 {
|
||||
subpackets = append(subpackets, outputSubpacket{true, prefSymmetricAlgosSubpacket, false, sig.PreferredSymmetric})
|
||||
}
|
||||
|
||||
if len(sig.PreferredHash) > 0 {
|
||||
subpackets = append(subpackets, outputSubpacket{true, prefHashAlgosSubpacket, false, sig.PreferredHash})
|
||||
}
|
||||
|
||||
if len(sig.PreferredCompression) > 0 {
|
||||
subpackets = append(subpackets, outputSubpacket{true, prefCompressionSubpacket, false, sig.PreferredCompression})
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
146
vendor/golang.org/x/crypto/openpgp/packet/signature_v3.go
generated
vendored
Normal file
146
vendor/golang.org/x/crypto/openpgp/packet/signature_v3.go
generated
vendored
Normal file
@ -0,0 +1,146 @@
|
||||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"io"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/s2k"
|
||||
)
|
||||
|
||||
// SignatureV3 represents older version 3 signatures. These signatures are less secure
|
||||
// than version 4 and should not be used to create new signatures. They are included
|
||||
// here for backwards compatibility to read and validate with older key material.
|
||||
// See RFC 4880, section 5.2.2.
|
||||
type SignatureV3 struct {
|
||||
SigType SignatureType
|
||||
CreationTime time.Time
|
||||
IssuerKeyId uint64
|
||||
PubKeyAlgo PublicKeyAlgorithm
|
||||
Hash crypto.Hash
|
||||
HashTag [2]byte
|
||||
|
||||
RSASignature parsedMPI
|
||||
DSASigR, DSASigS parsedMPI
|
||||
}
|
||||
|
||||
func (sig *SignatureV3) parse(r io.Reader) (err error) {
|
||||
// RFC 4880, section 5.2.2
|
||||
var buf [8]byte
|
||||
if _, err = readFull(r, buf[:1]); err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] < 2 || buf[0] > 3 {
|
||||
err = errors.UnsupportedError("signature packet version " + strconv.Itoa(int(buf[0])))
|
||||
return
|
||||
}
|
||||
if _, err = readFull(r, buf[:1]); err != nil {
|
||||
return
|
||||
}
|
||||
if buf[0] != 5 {
|
||||
err = errors.UnsupportedError(
|
||||
"invalid hashed material length " + strconv.Itoa(int(buf[0])))
|
||||
return
|
||||
}
|
||||
|
||||
// Read hashed material: signature type + creation time
|
||||
if _, err = readFull(r, buf[:5]); err != nil {
|
||||
return
|
||||
}
|
||||
sig.SigType = SignatureType(buf[0])
|
||||
t := binary.BigEndian.Uint32(buf[1:5])
|
||||
sig.CreationTime = time.Unix(int64(t), 0)
|
||||
|
||||
// Eight-octet Key ID of signer.
|
||||
if _, err = readFull(r, buf[:8]); err != nil {
|
||||
return
|
||||
}
|
||||
sig.IssuerKeyId = binary.BigEndian.Uint64(buf[:])
|
||||
|
||||
// Public-key and hash algorithm
|
||||
if _, err = readFull(r, buf[:2]); err != nil {
|
||||
return
|
||||
}
|
||||
sig.PubKeyAlgo = PublicKeyAlgorithm(buf[0])
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA:
|
||||
default:
|
||||
err = errors.UnsupportedError("public key algorithm " + strconv.Itoa(int(sig.PubKeyAlgo)))
|
||||
return
|
||||
}
|
||||
var ok bool
|
||||
if sig.Hash, ok = s2k.HashIdToHash(buf[1]); !ok {
|
||||
return errors.UnsupportedError("hash function " + strconv.Itoa(int(buf[2])))
|
||||
}
|
||||
|
||||
// Two-octet field holding left 16 bits of signed hash value.
|
||||
if _, err = readFull(r, sig.HashTag[:2]); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
sig.RSASignature.bytes, sig.RSASignature.bitLength, err = readMPI(r)
|
||||
case PubKeyAlgoDSA:
|
||||
if sig.DSASigR.bytes, sig.DSASigR.bitLength, err = readMPI(r); err != nil {
|
||||
return
|
||||
}
|
||||
sig.DSASigS.bytes, sig.DSASigS.bitLength, err = readMPI(r)
|
||||
default:
|
||||
panic("unreachable")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Serialize marshals sig to w. Sign, SignUserId or SignKey must have been
|
||||
// called first.
|
||||
func (sig *SignatureV3) Serialize(w io.Writer) (err error) {
|
||||
buf := make([]byte, 8)
|
||||
|
||||
// Write the sig type and creation time
|
||||
buf[0] = byte(sig.SigType)
|
||||
binary.BigEndian.PutUint32(buf[1:5], uint32(sig.CreationTime.Unix()))
|
||||
if _, err = w.Write(buf[:5]); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Write the issuer long key ID
|
||||
binary.BigEndian.PutUint64(buf[:8], sig.IssuerKeyId)
|
||||
if _, err = w.Write(buf[:8]); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Write public key algorithm, hash ID, and hash value
|
||||
buf[0] = byte(sig.PubKeyAlgo)
|
||||
hashId, ok := s2k.HashToHashId(sig.Hash)
|
||||
if !ok {
|
||||
return errors.UnsupportedError(fmt.Sprintf("hash function %v", sig.Hash))
|
||||
}
|
||||
buf[1] = hashId
|
||||
copy(buf[2:4], sig.HashTag[:])
|
||||
if _, err = w.Write(buf[:4]); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if sig.RSASignature.bytes == nil && sig.DSASigR.bytes == nil {
|
||||
return errors.InvalidArgumentError("Signature: need to call Sign, SignUserId or SignKey before Serialize")
|
||||
}
|
||||
|
||||
switch sig.PubKeyAlgo {
|
||||
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly:
|
||||
err = writeMPIs(w, sig.RSASignature)
|
||||
case PubKeyAlgoDSA:
|
||||
err = writeMPIs(w, sig.DSASigR, sig.DSASigS)
|
||||
default:
|
||||
panic("impossible")
|
||||
}
|
||||
return
|
||||
}
|
||||
155
vendor/golang.org/x/crypto/openpgp/packet/symmetric_key_encrypted.go
generated
vendored
Normal file
155
vendor/golang.org/x/crypto/openpgp/packet/symmetric_key_encrypted.go
generated
vendored
Normal file
@ -0,0 +1,155 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/cipher"
|
||||
"io"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/s2k"
|
||||
)
|
||||
|
||||
// This is the largest session key that we'll support. Since no 512-bit cipher
|
||||
// has even been seriously used, this is comfortably large.
|
||||
const maxSessionKeySizeInBytes = 64
|
||||
|
||||
// SymmetricKeyEncrypted represents a passphrase protected session key. See RFC
|
||||
// 4880, section 5.3.
|
||||
type SymmetricKeyEncrypted struct {
|
||||
CipherFunc CipherFunction
|
||||
s2k func(out, in []byte)
|
||||
encryptedKey []byte
|
||||
}
|
||||
|
||||
const symmetricKeyEncryptedVersion = 4
|
||||
|
||||
func (ske *SymmetricKeyEncrypted) parse(r io.Reader) error {
|
||||
// RFC 4880, section 5.3.
|
||||
var buf [2]byte
|
||||
if _, err := readFull(r, buf[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
if buf[0] != symmetricKeyEncryptedVersion {
|
||||
return errors.UnsupportedError("SymmetricKeyEncrypted version")
|
||||
}
|
||||
ske.CipherFunc = CipherFunction(buf[1])
|
||||
|
||||
if ske.CipherFunc.KeySize() == 0 {
|
||||
return errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(buf[1])))
|
||||
}
|
||||
|
||||
var err error
|
||||
ske.s2k, err = s2k.Parse(r)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
encryptedKey := make([]byte, maxSessionKeySizeInBytes)
|
||||
// The session key may follow. We just have to try and read to find
|
||||
// out. If it exists then we limit it to maxSessionKeySizeInBytes.
|
||||
n, err := readFull(r, encryptedKey)
|
||||
if err != nil && err != io.ErrUnexpectedEOF {
|
||||
return err
|
||||
}
|
||||
|
||||
if n != 0 {
|
||||
if n == maxSessionKeySizeInBytes {
|
||||
return errors.UnsupportedError("oversized encrypted session key")
|
||||
}
|
||||
ske.encryptedKey = encryptedKey[:n]
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Decrypt attempts to decrypt an encrypted session key and returns the key and
|
||||
// the cipher to use when decrypting a subsequent Symmetrically Encrypted Data
|
||||
// packet.
|
||||
func (ske *SymmetricKeyEncrypted) Decrypt(passphrase []byte) ([]byte, CipherFunction, error) {
|
||||
key := make([]byte, ske.CipherFunc.KeySize())
|
||||
ske.s2k(key, passphrase)
|
||||
|
||||
if len(ske.encryptedKey) == 0 {
|
||||
return key, ske.CipherFunc, nil
|
||||
}
|
||||
|
||||
// the IV is all zeros
|
||||
iv := make([]byte, ske.CipherFunc.blockSize())
|
||||
c := cipher.NewCFBDecrypter(ske.CipherFunc.new(key), iv)
|
||||
plaintextKey := make([]byte, len(ske.encryptedKey))
|
||||
c.XORKeyStream(plaintextKey, ske.encryptedKey)
|
||||
cipherFunc := CipherFunction(plaintextKey[0])
|
||||
if cipherFunc.blockSize() == 0 {
|
||||
return nil, ske.CipherFunc, errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(cipherFunc)))
|
||||
}
|
||||
plaintextKey = plaintextKey[1:]
|
||||
if l, cipherKeySize := len(plaintextKey), cipherFunc.KeySize(); l != cipherFunc.KeySize() {
|
||||
return nil, cipherFunc, errors.StructuralError("length of decrypted key (" + strconv.Itoa(l) + ") " +
|
||||
"not equal to cipher keysize (" + strconv.Itoa(cipherKeySize) + ")")
|
||||
}
|
||||
return plaintextKey, cipherFunc, nil
|
||||
}
|
||||
|
||||
// SerializeSymmetricKeyEncrypted serializes a symmetric key packet to w. The
|
||||
// packet contains a random session key, encrypted by a key derived from the
|
||||
// given passphrase. The session key is returned and must be passed to
|
||||
// SerializeSymmetricallyEncrypted.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func SerializeSymmetricKeyEncrypted(w io.Writer, passphrase []byte, config *Config) (key []byte, err error) {
|
||||
cipherFunc := config.Cipher()
|
||||
keySize := cipherFunc.KeySize()
|
||||
if keySize == 0 {
|
||||
return nil, errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(cipherFunc)))
|
||||
}
|
||||
|
||||
s2kBuf := new(bytes.Buffer)
|
||||
keyEncryptingKey := make([]byte, keySize)
|
||||
// s2k.Serialize salts and stretches the passphrase, and writes the
|
||||
// resulting key to keyEncryptingKey and the s2k descriptor to s2kBuf.
|
||||
err = s2k.Serialize(s2kBuf, keyEncryptingKey, config.Random(), passphrase, &s2k.Config{Hash: config.Hash(), S2KCount: config.PasswordHashIterations()})
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
s2kBytes := s2kBuf.Bytes()
|
||||
|
||||
packetLength := 2 /* header */ + len(s2kBytes) + 1 /* cipher type */ + keySize
|
||||
err = serializeHeader(w, packetTypeSymmetricKeyEncrypted, packetLength)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
var buf [2]byte
|
||||
buf[0] = symmetricKeyEncryptedVersion
|
||||
buf[1] = byte(cipherFunc)
|
||||
_, err = w.Write(buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
_, err = w.Write(s2kBytes)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
sessionKey := make([]byte, keySize)
|
||||
_, err = io.ReadFull(config.Random(), sessionKey)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
iv := make([]byte, cipherFunc.blockSize())
|
||||
c := cipher.NewCFBEncrypter(cipherFunc.new(keyEncryptingKey), iv)
|
||||
encryptedCipherAndKey := make([]byte, keySize+1)
|
||||
c.XORKeyStream(encryptedCipherAndKey, buf[1:])
|
||||
c.XORKeyStream(encryptedCipherAndKey[1:], sessionKey)
|
||||
_, err = w.Write(encryptedCipherAndKey)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
key = sessionKey
|
||||
return
|
||||
}
|
||||
290
vendor/golang.org/x/crypto/openpgp/packet/symmetrically_encrypted.go
generated
vendored
Normal file
290
vendor/golang.org/x/crypto/openpgp/packet/symmetrically_encrypted.go
generated
vendored
Normal file
@ -0,0 +1,290 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"crypto/cipher"
|
||||
"crypto/sha1"
|
||||
"crypto/subtle"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"hash"
|
||||
"io"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// SymmetricallyEncrypted represents a symmetrically encrypted byte string. The
|
||||
// encrypted contents will consist of more OpenPGP packets. See RFC 4880,
|
||||
// sections 5.7 and 5.13.
|
||||
type SymmetricallyEncrypted struct {
|
||||
MDC bool // true iff this is a type 18 packet and thus has an embedded MAC.
|
||||
contents io.Reader
|
||||
prefix []byte
|
||||
}
|
||||
|
||||
const symmetricallyEncryptedVersion = 1
|
||||
|
||||
func (se *SymmetricallyEncrypted) parse(r io.Reader) error {
|
||||
if se.MDC {
|
||||
// See RFC 4880, section 5.13.
|
||||
var buf [1]byte
|
||||
_, err := readFull(r, buf[:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if buf[0] != symmetricallyEncryptedVersion {
|
||||
return errors.UnsupportedError("unknown SymmetricallyEncrypted version")
|
||||
}
|
||||
}
|
||||
se.contents = r
|
||||
return nil
|
||||
}
|
||||
|
||||
// Decrypt returns a ReadCloser, from which the decrypted contents of the
|
||||
// packet can be read. An incorrect key can, with high probability, be detected
|
||||
// immediately and this will result in a KeyIncorrect error being returned.
|
||||
func (se *SymmetricallyEncrypted) Decrypt(c CipherFunction, key []byte) (io.ReadCloser, error) {
|
||||
keySize := c.KeySize()
|
||||
if keySize == 0 {
|
||||
return nil, errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(c)))
|
||||
}
|
||||
if len(key) != keySize {
|
||||
return nil, errors.InvalidArgumentError("SymmetricallyEncrypted: incorrect key length")
|
||||
}
|
||||
|
||||
if se.prefix == nil {
|
||||
se.prefix = make([]byte, c.blockSize()+2)
|
||||
_, err := readFull(se.contents, se.prefix)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else if len(se.prefix) != c.blockSize()+2 {
|
||||
return nil, errors.InvalidArgumentError("can't try ciphers with different block lengths")
|
||||
}
|
||||
|
||||
ocfbResync := OCFBResync
|
||||
if se.MDC {
|
||||
// MDC packets use a different form of OCFB mode.
|
||||
ocfbResync = OCFBNoResync
|
||||
}
|
||||
|
||||
s := NewOCFBDecrypter(c.new(key), se.prefix, ocfbResync)
|
||||
if s == nil {
|
||||
return nil, errors.ErrKeyIncorrect
|
||||
}
|
||||
|
||||
plaintext := cipher.StreamReader{S: s, R: se.contents}
|
||||
|
||||
if se.MDC {
|
||||
// MDC packets have an embedded hash that we need to check.
|
||||
h := sha1.New()
|
||||
h.Write(se.prefix)
|
||||
return &seMDCReader{in: plaintext, h: h}, nil
|
||||
}
|
||||
|
||||
// Otherwise, we just need to wrap plaintext so that it's a valid ReadCloser.
|
||||
return seReader{plaintext}, nil
|
||||
}
|
||||
|
||||
// seReader wraps an io.Reader with a no-op Close method.
|
||||
type seReader struct {
|
||||
in io.Reader
|
||||
}
|
||||
|
||||
func (ser seReader) Read(buf []byte) (int, error) {
|
||||
return ser.in.Read(buf)
|
||||
}
|
||||
|
||||
func (ser seReader) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
const mdcTrailerSize = 1 /* tag byte */ + 1 /* length byte */ + sha1.Size
|
||||
|
||||
// An seMDCReader wraps an io.Reader, maintains a running hash and keeps hold
|
||||
// of the most recent 22 bytes (mdcTrailerSize). Upon EOF, those bytes form an
|
||||
// MDC packet containing a hash of the previous contents which is checked
|
||||
// against the running hash. See RFC 4880, section 5.13.
|
||||
type seMDCReader struct {
|
||||
in io.Reader
|
||||
h hash.Hash
|
||||
trailer [mdcTrailerSize]byte
|
||||
scratch [mdcTrailerSize]byte
|
||||
trailerUsed int
|
||||
error bool
|
||||
eof bool
|
||||
}
|
||||
|
||||
func (ser *seMDCReader) Read(buf []byte) (n int, err error) {
|
||||
if ser.error {
|
||||
err = io.ErrUnexpectedEOF
|
||||
return
|
||||
}
|
||||
if ser.eof {
|
||||
err = io.EOF
|
||||
return
|
||||
}
|
||||
|
||||
// If we haven't yet filled the trailer buffer then we must do that
|
||||
// first.
|
||||
for ser.trailerUsed < mdcTrailerSize {
|
||||
n, err = ser.in.Read(ser.trailer[ser.trailerUsed:])
|
||||
ser.trailerUsed += n
|
||||
if err == io.EOF {
|
||||
if ser.trailerUsed != mdcTrailerSize {
|
||||
n = 0
|
||||
err = io.ErrUnexpectedEOF
|
||||
ser.error = true
|
||||
return
|
||||
}
|
||||
ser.eof = true
|
||||
n = 0
|
||||
return
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
n = 0
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// If it's a short read then we read into a temporary buffer and shift
|
||||
// the data into the caller's buffer.
|
||||
if len(buf) <= mdcTrailerSize {
|
||||
n, err = readFull(ser.in, ser.scratch[:len(buf)])
|
||||
copy(buf, ser.trailer[:n])
|
||||
ser.h.Write(buf[:n])
|
||||
copy(ser.trailer[:], ser.trailer[n:])
|
||||
copy(ser.trailer[mdcTrailerSize-n:], ser.scratch[:])
|
||||
if n < len(buf) {
|
||||
ser.eof = true
|
||||
err = io.EOF
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
n, err = ser.in.Read(buf[mdcTrailerSize:])
|
||||
copy(buf, ser.trailer[:])
|
||||
ser.h.Write(buf[:n])
|
||||
copy(ser.trailer[:], buf[n:])
|
||||
|
||||
if err == io.EOF {
|
||||
ser.eof = true
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// This is a new-format packet tag byte for a type 19 (MDC) packet.
|
||||
const mdcPacketTagByte = byte(0x80) | 0x40 | 19
|
||||
|
||||
func (ser *seMDCReader) Close() error {
|
||||
if ser.error {
|
||||
return errors.SignatureError("error during reading")
|
||||
}
|
||||
|
||||
for !ser.eof {
|
||||
// We haven't seen EOF so we need to read to the end
|
||||
var buf [1024]byte
|
||||
_, err := ser.Read(buf[:])
|
||||
if err == io.EOF {
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
return errors.SignatureError("error during reading")
|
||||
}
|
||||
}
|
||||
|
||||
if ser.trailer[0] != mdcPacketTagByte || ser.trailer[1] != sha1.Size {
|
||||
return errors.SignatureError("MDC packet not found")
|
||||
}
|
||||
ser.h.Write(ser.trailer[:2])
|
||||
|
||||
final := ser.h.Sum(nil)
|
||||
if subtle.ConstantTimeCompare(final, ser.trailer[2:]) != 1 {
|
||||
return errors.SignatureError("hash mismatch")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// An seMDCWriter writes through to an io.WriteCloser while maintains a running
|
||||
// hash of the data written. On close, it emits an MDC packet containing the
|
||||
// running hash.
|
||||
type seMDCWriter struct {
|
||||
w io.WriteCloser
|
||||
h hash.Hash
|
||||
}
|
||||
|
||||
func (w *seMDCWriter) Write(buf []byte) (n int, err error) {
|
||||
w.h.Write(buf)
|
||||
return w.w.Write(buf)
|
||||
}
|
||||
|
||||
func (w *seMDCWriter) Close() (err error) {
|
||||
var buf [mdcTrailerSize]byte
|
||||
|
||||
buf[0] = mdcPacketTagByte
|
||||
buf[1] = sha1.Size
|
||||
w.h.Write(buf[:2])
|
||||
digest := w.h.Sum(nil)
|
||||
copy(buf[2:], digest)
|
||||
|
||||
_, err = w.w.Write(buf[:])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return w.w.Close()
|
||||
}
|
||||
|
||||
// noOpCloser is like an ioutil.NopCloser, but for an io.Writer.
|
||||
type noOpCloser struct {
|
||||
w io.Writer
|
||||
}
|
||||
|
||||
func (c noOpCloser) Write(data []byte) (n int, err error) {
|
||||
return c.w.Write(data)
|
||||
}
|
||||
|
||||
func (c noOpCloser) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// SerializeSymmetricallyEncrypted serializes a symmetrically encrypted packet
|
||||
// to w and returns a WriteCloser to which the to-be-encrypted packets can be
|
||||
// written.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func SerializeSymmetricallyEncrypted(w io.Writer, c CipherFunction, key []byte, config *Config) (contents io.WriteCloser, err error) {
|
||||
if c.KeySize() != len(key) {
|
||||
return nil, errors.InvalidArgumentError("SymmetricallyEncrypted.Serialize: bad key length")
|
||||
}
|
||||
writeCloser := noOpCloser{w}
|
||||
ciphertext, err := serializeStreamHeader(writeCloser, packetTypeSymmetricallyEncryptedMDC)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
_, err = ciphertext.Write([]byte{symmetricallyEncryptedVersion})
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
block := c.new(key)
|
||||
blockSize := block.BlockSize()
|
||||
iv := make([]byte, blockSize)
|
||||
_, err = config.Random().Read(iv)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
s, prefix := NewOCFBEncrypter(block, iv, OCFBNoResync)
|
||||
_, err = ciphertext.Write(prefix)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
plaintext := cipher.StreamWriter{S: s, W: ciphertext}
|
||||
|
||||
h := sha1.New()
|
||||
h.Write(iv)
|
||||
h.Write(iv[blockSize-2:])
|
||||
contents = &seMDCWriter{w: plaintext, h: h}
|
||||
return
|
||||
}
|
||||
91
vendor/golang.org/x/crypto/openpgp/packet/userattribute.go
generated
vendored
Normal file
91
vendor/golang.org/x/crypto/openpgp/packet/userattribute.go
generated
vendored
Normal file
@ -0,0 +1,91 @@
|
||||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"image"
|
||||
"image/jpeg"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
)
|
||||
|
||||
const UserAttrImageSubpacket = 1
|
||||
|
||||
// UserAttribute is capable of storing other types of data about a user
|
||||
// beyond name, email and a text comment. In practice, user attributes are typically used
|
||||
// to store a signed thumbnail photo JPEG image of the user.
|
||||
// See RFC 4880, section 5.12.
|
||||
type UserAttribute struct {
|
||||
Contents []*OpaqueSubpacket
|
||||
}
|
||||
|
||||
// NewUserAttributePhoto creates a user attribute packet
|
||||
// containing the given images.
|
||||
func NewUserAttributePhoto(photos ...image.Image) (uat *UserAttribute, err error) {
|
||||
uat = new(UserAttribute)
|
||||
for _, photo := range photos {
|
||||
var buf bytes.Buffer
|
||||
// RFC 4880, Section 5.12.1.
|
||||
data := []byte{
|
||||
0x10, 0x00, // Little-endian image header length (16 bytes)
|
||||
0x01, // Image header version 1
|
||||
0x01, // JPEG
|
||||
0, 0, 0, 0, // 12 reserved octets, must be all zero.
|
||||
0, 0, 0, 0,
|
||||
0, 0, 0, 0}
|
||||
if _, err = buf.Write(data); err != nil {
|
||||
return
|
||||
}
|
||||
if err = jpeg.Encode(&buf, photo, nil); err != nil {
|
||||
return
|
||||
}
|
||||
uat.Contents = append(uat.Contents, &OpaqueSubpacket{
|
||||
SubType: UserAttrImageSubpacket,
|
||||
Contents: buf.Bytes()})
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// NewUserAttribute creates a new user attribute packet containing the given subpackets.
|
||||
func NewUserAttribute(contents ...*OpaqueSubpacket) *UserAttribute {
|
||||
return &UserAttribute{Contents: contents}
|
||||
}
|
||||
|
||||
func (uat *UserAttribute) parse(r io.Reader) (err error) {
|
||||
// RFC 4880, section 5.13
|
||||
b, err := ioutil.ReadAll(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
uat.Contents, err = OpaqueSubpackets(b)
|
||||
return
|
||||
}
|
||||
|
||||
// Serialize marshals the user attribute to w in the form of an OpenPGP packet, including
|
||||
// header.
|
||||
func (uat *UserAttribute) Serialize(w io.Writer) (err error) {
|
||||
var buf bytes.Buffer
|
||||
for _, sp := range uat.Contents {
|
||||
sp.Serialize(&buf)
|
||||
}
|
||||
if err = serializeHeader(w, packetTypeUserAttribute, buf.Len()); err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = w.Write(buf.Bytes())
|
||||
return
|
||||
}
|
||||
|
||||
// ImageData returns zero or more byte slices, each containing
|
||||
// JPEG File Interchange Format (JFIF), for each photo in the
|
||||
// user attribute packet.
|
||||
func (uat *UserAttribute) ImageData() (imageData [][]byte) {
|
||||
for _, sp := range uat.Contents {
|
||||
if sp.SubType == UserAttrImageSubpacket && len(sp.Contents) > 16 {
|
||||
imageData = append(imageData, sp.Contents[16:])
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
160
vendor/golang.org/x/crypto/openpgp/packet/userid.go
generated
vendored
Normal file
160
vendor/golang.org/x/crypto/openpgp/packet/userid.go
generated
vendored
Normal file
@ -0,0 +1,160 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package packet
|
||||
|
||||
import (
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// UserId contains text that is intended to represent the name and email
|
||||
// address of the key holder. See RFC 4880, section 5.11. By convention, this
|
||||
// takes the form "Full Name (Comment) <email@example.com>"
|
||||
type UserId struct {
|
||||
Id string // By convention, this takes the form "Full Name (Comment) <email@example.com>" which is split out in the fields below.
|
||||
|
||||
Name, Comment, Email string
|
||||
}
|
||||
|
||||
func hasInvalidCharacters(s string) bool {
|
||||
for _, c := range s {
|
||||
switch c {
|
||||
case '(', ')', '<', '>', 0:
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// NewUserId returns a UserId or nil if any of the arguments contain invalid
|
||||
// characters. The invalid characters are '\x00', '(', ')', '<' and '>'
|
||||
func NewUserId(name, comment, email string) *UserId {
|
||||
// RFC 4880 doesn't deal with the structure of userid strings; the
|
||||
// name, comment and email form is just a convention. However, there's
|
||||
// no convention about escaping the metacharacters and GPG just refuses
|
||||
// to create user ids where, say, the name contains a '('. We mirror
|
||||
// this behaviour.
|
||||
|
||||
if hasInvalidCharacters(name) || hasInvalidCharacters(comment) || hasInvalidCharacters(email) {
|
||||
return nil
|
||||
}
|
||||
|
||||
uid := new(UserId)
|
||||
uid.Name, uid.Comment, uid.Email = name, comment, email
|
||||
uid.Id = name
|
||||
if len(comment) > 0 {
|
||||
if len(uid.Id) > 0 {
|
||||
uid.Id += " "
|
||||
}
|
||||
uid.Id += "("
|
||||
uid.Id += comment
|
||||
uid.Id += ")"
|
||||
}
|
||||
if len(email) > 0 {
|
||||
if len(uid.Id) > 0 {
|
||||
uid.Id += " "
|
||||
}
|
||||
uid.Id += "<"
|
||||
uid.Id += email
|
||||
uid.Id += ">"
|
||||
}
|
||||
return uid
|
||||
}
|
||||
|
||||
func (uid *UserId) parse(r io.Reader) (err error) {
|
||||
// RFC 4880, section 5.11
|
||||
b, err := ioutil.ReadAll(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
uid.Id = string(b)
|
||||
uid.Name, uid.Comment, uid.Email = parseUserId(uid.Id)
|
||||
return
|
||||
}
|
||||
|
||||
// Serialize marshals uid to w in the form of an OpenPGP packet, including
|
||||
// header.
|
||||
func (uid *UserId) Serialize(w io.Writer) error {
|
||||
err := serializeHeader(w, packetTypeUserId, len(uid.Id))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = w.Write([]byte(uid.Id))
|
||||
return err
|
||||
}
|
||||
|
||||
// parseUserId extracts the name, comment and email from a user id string that
|
||||
// is formatted as "Full Name (Comment) <email@example.com>".
|
||||
func parseUserId(id string) (name, comment, email string) {
|
||||
var n, c, e struct {
|
||||
start, end int
|
||||
}
|
||||
var state int
|
||||
|
||||
for offset, rune := range id {
|
||||
switch state {
|
||||
case 0:
|
||||
// Entering name
|
||||
n.start = offset
|
||||
state = 1
|
||||
fallthrough
|
||||
case 1:
|
||||
// In name
|
||||
if rune == '(' {
|
||||
state = 2
|
||||
n.end = offset
|
||||
} else if rune == '<' {
|
||||
state = 5
|
||||
n.end = offset
|
||||
}
|
||||
case 2:
|
||||
// Entering comment
|
||||
c.start = offset
|
||||
state = 3
|
||||
fallthrough
|
||||
case 3:
|
||||
// In comment
|
||||
if rune == ')' {
|
||||
state = 4
|
||||
c.end = offset
|
||||
}
|
||||
case 4:
|
||||
// Between comment and email
|
||||
if rune == '<' {
|
||||
state = 5
|
||||
}
|
||||
case 5:
|
||||
// Entering email
|
||||
e.start = offset
|
||||
state = 6
|
||||
fallthrough
|
||||
case 6:
|
||||
// In email
|
||||
if rune == '>' {
|
||||
state = 7
|
||||
e.end = offset
|
||||
}
|
||||
default:
|
||||
// After email
|
||||
}
|
||||
}
|
||||
switch state {
|
||||
case 1:
|
||||
// ended in the name
|
||||
n.end = len(id)
|
||||
case 3:
|
||||
// ended in comment
|
||||
c.end = len(id)
|
||||
case 6:
|
||||
// ended in email
|
||||
e.end = len(id)
|
||||
}
|
||||
|
||||
name = strings.TrimSpace(id[n.start:n.end])
|
||||
comment = strings.TrimSpace(id[c.start:c.end])
|
||||
email = strings.TrimSpace(id[e.start:e.end])
|
||||
return
|
||||
}
|
||||
442
vendor/golang.org/x/crypto/openpgp/read.go
generated
vendored
Normal file
442
vendor/golang.org/x/crypto/openpgp/read.go
generated
vendored
Normal file
@ -0,0 +1,442 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package openpgp implements high level operations on OpenPGP messages.
|
||||
package openpgp // import "golang.org/x/crypto/openpgp"
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
_ "crypto/sha256"
|
||||
"hash"
|
||||
"io"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/crypto/openpgp/armor"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/packet"
|
||||
)
|
||||
|
||||
// SignatureType is the armor type for a PGP signature.
|
||||
var SignatureType = "PGP SIGNATURE"
|
||||
|
||||
// readArmored reads an armored block with the given type.
|
||||
func readArmored(r io.Reader, expectedType string) (body io.Reader, err error) {
|
||||
block, err := armor.Decode(r)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if block.Type != expectedType {
|
||||
return nil, errors.InvalidArgumentError("expected '" + expectedType + "', got: " + block.Type)
|
||||
}
|
||||
|
||||
return block.Body, nil
|
||||
}
|
||||
|
||||
// MessageDetails contains the result of parsing an OpenPGP encrypted and/or
|
||||
// signed message.
|
||||
type MessageDetails struct {
|
||||
IsEncrypted bool // true if the message was encrypted.
|
||||
EncryptedToKeyIds []uint64 // the list of recipient key ids.
|
||||
IsSymmetricallyEncrypted bool // true if a passphrase could have decrypted the message.
|
||||
DecryptedWith Key // the private key used to decrypt the message, if any.
|
||||
IsSigned bool // true if the message is signed.
|
||||
SignedByKeyId uint64 // the key id of the signer, if any.
|
||||
SignedBy *Key // the key of the signer, if available.
|
||||
LiteralData *packet.LiteralData // the metadata of the contents
|
||||
UnverifiedBody io.Reader // the contents of the message.
|
||||
|
||||
// If IsSigned is true and SignedBy is non-zero then the signature will
|
||||
// be verified as UnverifiedBody is read. The signature cannot be
|
||||
// checked until the whole of UnverifiedBody is read so UnverifiedBody
|
||||
// must be consumed until EOF before the data can be trusted. Even if a
|
||||
// message isn't signed (or the signer is unknown) the data may contain
|
||||
// an authentication code that is only checked once UnverifiedBody has
|
||||
// been consumed. Once EOF has been seen, the following fields are
|
||||
// valid. (An authentication code failure is reported as a
|
||||
// SignatureError error when reading from UnverifiedBody.)
|
||||
SignatureError error // nil if the signature is good.
|
||||
Signature *packet.Signature // the signature packet itself, if v4 (default)
|
||||
SignatureV3 *packet.SignatureV3 // the signature packet if it is a v2 or v3 signature
|
||||
|
||||
decrypted io.ReadCloser
|
||||
}
|
||||
|
||||
// A PromptFunction is used as a callback by functions that may need to decrypt
|
||||
// a private key, or prompt for a passphrase. It is called with a list of
|
||||
// acceptable, encrypted private keys and a boolean that indicates whether a
|
||||
// passphrase is usable. It should either decrypt a private key or return a
|
||||
// passphrase to try. If the decrypted private key or given passphrase isn't
|
||||
// correct, the function will be called again, forever. Any error returned will
|
||||
// be passed up.
|
||||
type PromptFunction func(keys []Key, symmetric bool) ([]byte, error)
|
||||
|
||||
// A keyEnvelopePair is used to store a private key with the envelope that
|
||||
// contains a symmetric key, encrypted with that key.
|
||||
type keyEnvelopePair struct {
|
||||
key Key
|
||||
encryptedKey *packet.EncryptedKey
|
||||
}
|
||||
|
||||
// ReadMessage parses an OpenPGP message that may be signed and/or encrypted.
|
||||
// The given KeyRing should contain both public keys (for signature
|
||||
// verification) and, possibly encrypted, private keys for decrypting.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func ReadMessage(r io.Reader, keyring KeyRing, prompt PromptFunction, config *packet.Config) (md *MessageDetails, err error) {
|
||||
var p packet.Packet
|
||||
|
||||
var symKeys []*packet.SymmetricKeyEncrypted
|
||||
var pubKeys []keyEnvelopePair
|
||||
var se *packet.SymmetricallyEncrypted
|
||||
|
||||
packets := packet.NewReader(r)
|
||||
md = new(MessageDetails)
|
||||
md.IsEncrypted = true
|
||||
|
||||
// The message, if encrypted, starts with a number of packets
|
||||
// containing an encrypted decryption key. The decryption key is either
|
||||
// encrypted to a public key, or with a passphrase. This loop
|
||||
// collects these packets.
|
||||
ParsePackets:
|
||||
for {
|
||||
p, err = packets.Next()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch p := p.(type) {
|
||||
case *packet.SymmetricKeyEncrypted:
|
||||
// This packet contains the decryption key encrypted with a passphrase.
|
||||
md.IsSymmetricallyEncrypted = true
|
||||
symKeys = append(symKeys, p)
|
||||
case *packet.EncryptedKey:
|
||||
// This packet contains the decryption key encrypted to a public key.
|
||||
md.EncryptedToKeyIds = append(md.EncryptedToKeyIds, p.KeyId)
|
||||
switch p.Algo {
|
||||
case packet.PubKeyAlgoRSA, packet.PubKeyAlgoRSAEncryptOnly, packet.PubKeyAlgoElGamal:
|
||||
break
|
||||
default:
|
||||
continue
|
||||
}
|
||||
var keys []Key
|
||||
if p.KeyId == 0 {
|
||||
keys = keyring.DecryptionKeys()
|
||||
} else {
|
||||
keys = keyring.KeysById(p.KeyId)
|
||||
}
|
||||
for _, k := range keys {
|
||||
pubKeys = append(pubKeys, keyEnvelopePair{k, p})
|
||||
}
|
||||
case *packet.SymmetricallyEncrypted:
|
||||
se = p
|
||||
break ParsePackets
|
||||
case *packet.Compressed, *packet.LiteralData, *packet.OnePassSignature:
|
||||
// This message isn't encrypted.
|
||||
if len(symKeys) != 0 || len(pubKeys) != 0 {
|
||||
return nil, errors.StructuralError("key material not followed by encrypted message")
|
||||
}
|
||||
packets.Unread(p)
|
||||
return readSignedMessage(packets, nil, keyring)
|
||||
}
|
||||
}
|
||||
|
||||
var candidates []Key
|
||||
var decrypted io.ReadCloser
|
||||
|
||||
// Now that we have the list of encrypted keys we need to decrypt at
|
||||
// least one of them or, if we cannot, we need to call the prompt
|
||||
// function so that it can decrypt a key or give us a passphrase.
|
||||
FindKey:
|
||||
for {
|
||||
// See if any of the keys already have a private key available
|
||||
candidates = candidates[:0]
|
||||
candidateFingerprints := make(map[string]bool)
|
||||
|
||||
for _, pk := range pubKeys {
|
||||
if pk.key.PrivateKey == nil {
|
||||
continue
|
||||
}
|
||||
if !pk.key.PrivateKey.Encrypted {
|
||||
if len(pk.encryptedKey.Key) == 0 {
|
||||
pk.encryptedKey.Decrypt(pk.key.PrivateKey, config)
|
||||
}
|
||||
if len(pk.encryptedKey.Key) == 0 {
|
||||
continue
|
||||
}
|
||||
decrypted, err = se.Decrypt(pk.encryptedKey.CipherFunc, pk.encryptedKey.Key)
|
||||
if err != nil && err != errors.ErrKeyIncorrect {
|
||||
return nil, err
|
||||
}
|
||||
if decrypted != nil {
|
||||
md.DecryptedWith = pk.key
|
||||
break FindKey
|
||||
}
|
||||
} else {
|
||||
fpr := string(pk.key.PublicKey.Fingerprint[:])
|
||||
if v := candidateFingerprints[fpr]; v {
|
||||
continue
|
||||
}
|
||||
candidates = append(candidates, pk.key)
|
||||
candidateFingerprints[fpr] = true
|
||||
}
|
||||
}
|
||||
|
||||
if len(candidates) == 0 && len(symKeys) == 0 {
|
||||
return nil, errors.ErrKeyIncorrect
|
||||
}
|
||||
|
||||
if prompt == nil {
|
||||
return nil, errors.ErrKeyIncorrect
|
||||
}
|
||||
|
||||
passphrase, err := prompt(candidates, len(symKeys) != 0)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Try the symmetric passphrase first
|
||||
if len(symKeys) != 0 && passphrase != nil {
|
||||
for _, s := range symKeys {
|
||||
key, cipherFunc, err := s.Decrypt(passphrase)
|
||||
if err == nil {
|
||||
decrypted, err = se.Decrypt(cipherFunc, key)
|
||||
if err != nil && err != errors.ErrKeyIncorrect {
|
||||
return nil, err
|
||||
}
|
||||
if decrypted != nil {
|
||||
break FindKey
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
md.decrypted = decrypted
|
||||
if err := packets.Push(decrypted); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return readSignedMessage(packets, md, keyring)
|
||||
}
|
||||
|
||||
// readSignedMessage reads a possibly signed message if mdin is non-zero then
|
||||
// that structure is updated and returned. Otherwise a fresh MessageDetails is
|
||||
// used.
|
||||
func readSignedMessage(packets *packet.Reader, mdin *MessageDetails, keyring KeyRing) (md *MessageDetails, err error) {
|
||||
if mdin == nil {
|
||||
mdin = new(MessageDetails)
|
||||
}
|
||||
md = mdin
|
||||
|
||||
var p packet.Packet
|
||||
var h hash.Hash
|
||||
var wrappedHash hash.Hash
|
||||
FindLiteralData:
|
||||
for {
|
||||
p, err = packets.Next()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch p := p.(type) {
|
||||
case *packet.Compressed:
|
||||
if err := packets.Push(p.Body); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
case *packet.OnePassSignature:
|
||||
if !p.IsLast {
|
||||
return nil, errors.UnsupportedError("nested signatures")
|
||||
}
|
||||
|
||||
h, wrappedHash, err = hashForSignature(p.Hash, p.SigType)
|
||||
if err != nil {
|
||||
md = nil
|
||||
return
|
||||
}
|
||||
|
||||
md.IsSigned = true
|
||||
md.SignedByKeyId = p.KeyId
|
||||
keys := keyring.KeysByIdUsage(p.KeyId, packet.KeyFlagSign)
|
||||
if len(keys) > 0 {
|
||||
md.SignedBy = &keys[0]
|
||||
}
|
||||
case *packet.LiteralData:
|
||||
md.LiteralData = p
|
||||
break FindLiteralData
|
||||
}
|
||||
}
|
||||
|
||||
if md.SignedBy != nil {
|
||||
md.UnverifiedBody = &signatureCheckReader{packets, h, wrappedHash, md}
|
||||
} else if md.decrypted != nil {
|
||||
md.UnverifiedBody = checkReader{md}
|
||||
} else {
|
||||
md.UnverifiedBody = md.LiteralData.Body
|
||||
}
|
||||
|
||||
return md, nil
|
||||
}
|
||||
|
||||
// hashForSignature returns a pair of hashes that can be used to verify a
|
||||
// signature. The signature may specify that the contents of the signed message
|
||||
// should be preprocessed (i.e. to normalize line endings). Thus this function
|
||||
// returns two hashes. The second should be used to hash the message itself and
|
||||
// performs any needed preprocessing.
|
||||
func hashForSignature(hashId crypto.Hash, sigType packet.SignatureType) (hash.Hash, hash.Hash, error) {
|
||||
if !hashId.Available() {
|
||||
return nil, nil, errors.UnsupportedError("hash not available: " + strconv.Itoa(int(hashId)))
|
||||
}
|
||||
h := hashId.New()
|
||||
|
||||
switch sigType {
|
||||
case packet.SigTypeBinary:
|
||||
return h, h, nil
|
||||
case packet.SigTypeText:
|
||||
return h, NewCanonicalTextHash(h), nil
|
||||
}
|
||||
|
||||
return nil, nil, errors.UnsupportedError("unsupported signature type: " + strconv.Itoa(int(sigType)))
|
||||
}
|
||||
|
||||
// checkReader wraps an io.Reader from a LiteralData packet. When it sees EOF
|
||||
// it closes the ReadCloser from any SymmetricallyEncrypted packet to trigger
|
||||
// MDC checks.
|
||||
type checkReader struct {
|
||||
md *MessageDetails
|
||||
}
|
||||
|
||||
func (cr checkReader) Read(buf []byte) (n int, err error) {
|
||||
n, err = cr.md.LiteralData.Body.Read(buf)
|
||||
if err == io.EOF {
|
||||
mdcErr := cr.md.decrypted.Close()
|
||||
if mdcErr != nil {
|
||||
err = mdcErr
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// signatureCheckReader wraps an io.Reader from a LiteralData packet and hashes
|
||||
// the data as it is read. When it sees an EOF from the underlying io.Reader
|
||||
// it parses and checks a trailing Signature packet and triggers any MDC checks.
|
||||
type signatureCheckReader struct {
|
||||
packets *packet.Reader
|
||||
h, wrappedHash hash.Hash
|
||||
md *MessageDetails
|
||||
}
|
||||
|
||||
func (scr *signatureCheckReader) Read(buf []byte) (n int, err error) {
|
||||
n, err = scr.md.LiteralData.Body.Read(buf)
|
||||
scr.wrappedHash.Write(buf[:n])
|
||||
if err == io.EOF {
|
||||
var p packet.Packet
|
||||
p, scr.md.SignatureError = scr.packets.Next()
|
||||
if scr.md.SignatureError != nil {
|
||||
return
|
||||
}
|
||||
|
||||
var ok bool
|
||||
if scr.md.Signature, ok = p.(*packet.Signature); ok {
|
||||
scr.md.SignatureError = scr.md.SignedBy.PublicKey.VerifySignature(scr.h, scr.md.Signature)
|
||||
} else if scr.md.SignatureV3, ok = p.(*packet.SignatureV3); ok {
|
||||
scr.md.SignatureError = scr.md.SignedBy.PublicKey.VerifySignatureV3(scr.h, scr.md.SignatureV3)
|
||||
} else {
|
||||
scr.md.SignatureError = errors.StructuralError("LiteralData not followed by Signature")
|
||||
return
|
||||
}
|
||||
|
||||
// The SymmetricallyEncrypted packet, if any, might have an
|
||||
// unsigned hash of its own. In order to check this we need to
|
||||
// close that Reader.
|
||||
if scr.md.decrypted != nil {
|
||||
mdcErr := scr.md.decrypted.Close()
|
||||
if mdcErr != nil {
|
||||
err = mdcErr
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// CheckDetachedSignature takes a signed file and a detached signature and
|
||||
// returns the signer if the signature is valid. If the signer isn't known,
|
||||
// ErrUnknownIssuer is returned.
|
||||
func CheckDetachedSignature(keyring KeyRing, signed, signature io.Reader) (signer *Entity, err error) {
|
||||
var issuerKeyId uint64
|
||||
var hashFunc crypto.Hash
|
||||
var sigType packet.SignatureType
|
||||
var keys []Key
|
||||
var p packet.Packet
|
||||
|
||||
packets := packet.NewReader(signature)
|
||||
for {
|
||||
p, err = packets.Next()
|
||||
if err == io.EOF {
|
||||
return nil, errors.ErrUnknownIssuer
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
switch sig := p.(type) {
|
||||
case *packet.Signature:
|
||||
if sig.IssuerKeyId == nil {
|
||||
return nil, errors.StructuralError("signature doesn't have an issuer")
|
||||
}
|
||||
issuerKeyId = *sig.IssuerKeyId
|
||||
hashFunc = sig.Hash
|
||||
sigType = sig.SigType
|
||||
case *packet.SignatureV3:
|
||||
issuerKeyId = sig.IssuerKeyId
|
||||
hashFunc = sig.Hash
|
||||
sigType = sig.SigType
|
||||
default:
|
||||
return nil, errors.StructuralError("non signature packet found")
|
||||
}
|
||||
|
||||
keys = keyring.KeysByIdUsage(issuerKeyId, packet.KeyFlagSign)
|
||||
if len(keys) > 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if len(keys) == 0 {
|
||||
panic("unreachable")
|
||||
}
|
||||
|
||||
h, wrappedHash, err := hashForSignature(hashFunc, sigType)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if _, err := io.Copy(wrappedHash, signed); err != nil && err != io.EOF {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for _, key := range keys {
|
||||
switch sig := p.(type) {
|
||||
case *packet.Signature:
|
||||
err = key.PublicKey.VerifySignature(h, sig)
|
||||
case *packet.SignatureV3:
|
||||
err = key.PublicKey.VerifySignatureV3(h, sig)
|
||||
default:
|
||||
panic("unreachable")
|
||||
}
|
||||
|
||||
if err == nil {
|
||||
return key.Entity, nil
|
||||
}
|
||||
}
|
||||
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// CheckArmoredDetachedSignature performs the same actions as
|
||||
// CheckDetachedSignature but expects the signature to be armored.
|
||||
func CheckArmoredDetachedSignature(keyring KeyRing, signed, signature io.Reader) (signer *Entity, err error) {
|
||||
body, err := readArmored(signature, SignatureType)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return CheckDetachedSignature(keyring, signed, body)
|
||||
}
|
||||
273
vendor/golang.org/x/crypto/openpgp/s2k/s2k.go
generated
vendored
Normal file
273
vendor/golang.org/x/crypto/openpgp/s2k/s2k.go
generated
vendored
Normal file
@ -0,0 +1,273 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Package s2k implements the various OpenPGP string-to-key transforms as
|
||||
// specified in RFC 4800 section 3.7.1.
|
||||
package s2k // import "golang.org/x/crypto/openpgp/s2k"
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"hash"
|
||||
"io"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
)
|
||||
|
||||
// Config collects configuration parameters for s2k key-stretching
|
||||
// transformatioms. A nil *Config is valid and results in all default
|
||||
// values. Currently, Config is used only by the Serialize function in
|
||||
// this package.
|
||||
type Config struct {
|
||||
// Hash is the default hash function to be used. If
|
||||
// nil, SHA1 is used.
|
||||
Hash crypto.Hash
|
||||
// S2KCount is only used for symmetric encryption. It
|
||||
// determines the strength of the passphrase stretching when
|
||||
// the said passphrase is hashed to produce a key. S2KCount
|
||||
// should be between 1024 and 65011712, inclusive. If Config
|
||||
// is nil or S2KCount is 0, the value 65536 used. Not all
|
||||
// values in the above range can be represented. S2KCount will
|
||||
// be rounded up to the next representable value if it cannot
|
||||
// be encoded exactly. When set, it is strongly encrouraged to
|
||||
// use a value that is at least 65536. See RFC 4880 Section
|
||||
// 3.7.1.3.
|
||||
S2KCount int
|
||||
}
|
||||
|
||||
func (c *Config) hash() crypto.Hash {
|
||||
if c == nil || uint(c.Hash) == 0 {
|
||||
// SHA1 is the historical default in this package.
|
||||
return crypto.SHA1
|
||||
}
|
||||
|
||||
return c.Hash
|
||||
}
|
||||
|
||||
func (c *Config) encodedCount() uint8 {
|
||||
if c == nil || c.S2KCount == 0 {
|
||||
return 96 // The common case. Correspoding to 65536
|
||||
}
|
||||
|
||||
i := c.S2KCount
|
||||
switch {
|
||||
// Behave like GPG. Should we make 65536 the lowest value used?
|
||||
case i < 1024:
|
||||
i = 1024
|
||||
case i > 65011712:
|
||||
i = 65011712
|
||||
}
|
||||
|
||||
return encodeCount(i)
|
||||
}
|
||||
|
||||
// encodeCount converts an iterative "count" in the range 1024 to
|
||||
// 65011712, inclusive, to an encoded count. The return value is the
|
||||
// octet that is actually stored in the GPG file. encodeCount panics
|
||||
// if i is not in the above range (encodedCount above takes care to
|
||||
// pass i in the correct range). See RFC 4880 Section 3.7.7.1.
|
||||
func encodeCount(i int) uint8 {
|
||||
if i < 1024 || i > 65011712 {
|
||||
panic("count arg i outside the required range")
|
||||
}
|
||||
|
||||
for encoded := 0; encoded < 256; encoded++ {
|
||||
count := decodeCount(uint8(encoded))
|
||||
if count >= i {
|
||||
return uint8(encoded)
|
||||
}
|
||||
}
|
||||
|
||||
return 255
|
||||
}
|
||||
|
||||
// decodeCount returns the s2k mode 3 iterative "count" corresponding to
|
||||
// the encoded octet c.
|
||||
func decodeCount(c uint8) int {
|
||||
return (16 + int(c&15)) << (uint32(c>>4) + 6)
|
||||
}
|
||||
|
||||
// Simple writes to out the result of computing the Simple S2K function (RFC
|
||||
// 4880, section 3.7.1.1) using the given hash and input passphrase.
|
||||
func Simple(out []byte, h hash.Hash, in []byte) {
|
||||
Salted(out, h, in, nil)
|
||||
}
|
||||
|
||||
var zero [1]byte
|
||||
|
||||
// Salted writes to out the result of computing the Salted S2K function (RFC
|
||||
// 4880, section 3.7.1.2) using the given hash, input passphrase and salt.
|
||||
func Salted(out []byte, h hash.Hash, in []byte, salt []byte) {
|
||||
done := 0
|
||||
var digest []byte
|
||||
|
||||
for i := 0; done < len(out); i++ {
|
||||
h.Reset()
|
||||
for j := 0; j < i; j++ {
|
||||
h.Write(zero[:])
|
||||
}
|
||||
h.Write(salt)
|
||||
h.Write(in)
|
||||
digest = h.Sum(digest[:0])
|
||||
n := copy(out[done:], digest)
|
||||
done += n
|
||||
}
|
||||
}
|
||||
|
||||
// Iterated writes to out the result of computing the Iterated and Salted S2K
|
||||
// function (RFC 4880, section 3.7.1.3) using the given hash, input passphrase,
|
||||
// salt and iteration count.
|
||||
func Iterated(out []byte, h hash.Hash, in []byte, salt []byte, count int) {
|
||||
combined := make([]byte, len(in)+len(salt))
|
||||
copy(combined, salt)
|
||||
copy(combined[len(salt):], in)
|
||||
|
||||
if count < len(combined) {
|
||||
count = len(combined)
|
||||
}
|
||||
|
||||
done := 0
|
||||
var digest []byte
|
||||
for i := 0; done < len(out); i++ {
|
||||
h.Reset()
|
||||
for j := 0; j < i; j++ {
|
||||
h.Write(zero[:])
|
||||
}
|
||||
written := 0
|
||||
for written < count {
|
||||
if written+len(combined) > count {
|
||||
todo := count - written
|
||||
h.Write(combined[:todo])
|
||||
written = count
|
||||
} else {
|
||||
h.Write(combined)
|
||||
written += len(combined)
|
||||
}
|
||||
}
|
||||
digest = h.Sum(digest[:0])
|
||||
n := copy(out[done:], digest)
|
||||
done += n
|
||||
}
|
||||
}
|
||||
|
||||
// Parse reads a binary specification for a string-to-key transformation from r
|
||||
// and returns a function which performs that transform.
|
||||
func Parse(r io.Reader) (f func(out, in []byte), err error) {
|
||||
var buf [9]byte
|
||||
|
||||
_, err = io.ReadFull(r, buf[:2])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
hash, ok := HashIdToHash(buf[1])
|
||||
if !ok {
|
||||
return nil, errors.UnsupportedError("hash for S2K function: " + strconv.Itoa(int(buf[1])))
|
||||
}
|
||||
if !hash.Available() {
|
||||
return nil, errors.UnsupportedError("hash not available: " + strconv.Itoa(int(hash)))
|
||||
}
|
||||
h := hash.New()
|
||||
|
||||
switch buf[0] {
|
||||
case 0:
|
||||
f := func(out, in []byte) {
|
||||
Simple(out, h, in)
|
||||
}
|
||||
return f, nil
|
||||
case 1:
|
||||
_, err = io.ReadFull(r, buf[:8])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
f := func(out, in []byte) {
|
||||
Salted(out, h, in, buf[:8])
|
||||
}
|
||||
return f, nil
|
||||
case 3:
|
||||
_, err = io.ReadFull(r, buf[:9])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
count := decodeCount(buf[8])
|
||||
f := func(out, in []byte) {
|
||||
Iterated(out, h, in, buf[:8], count)
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
|
||||
return nil, errors.UnsupportedError("S2K function")
|
||||
}
|
||||
|
||||
// Serialize salts and stretches the given passphrase and writes the
|
||||
// resulting key into key. It also serializes an S2K descriptor to
|
||||
// w. The key stretching can be configured with c, which may be
|
||||
// nil. In that case, sensible defaults will be used.
|
||||
func Serialize(w io.Writer, key []byte, rand io.Reader, passphrase []byte, c *Config) error {
|
||||
var buf [11]byte
|
||||
buf[0] = 3 /* iterated and salted */
|
||||
buf[1], _ = HashToHashId(c.hash())
|
||||
salt := buf[2:10]
|
||||
if _, err := io.ReadFull(rand, salt); err != nil {
|
||||
return err
|
||||
}
|
||||
encodedCount := c.encodedCount()
|
||||
count := decodeCount(encodedCount)
|
||||
buf[10] = encodedCount
|
||||
if _, err := w.Write(buf[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
Iterated(key, c.hash().New(), passphrase, salt, count)
|
||||
return nil
|
||||
}
|
||||
|
||||
// hashToHashIdMapping contains pairs relating OpenPGP's hash identifier with
|
||||
// Go's crypto.Hash type. See RFC 4880, section 9.4.
|
||||
var hashToHashIdMapping = []struct {
|
||||
id byte
|
||||
hash crypto.Hash
|
||||
name string
|
||||
}{
|
||||
{1, crypto.MD5, "MD5"},
|
||||
{2, crypto.SHA1, "SHA1"},
|
||||
{3, crypto.RIPEMD160, "RIPEMD160"},
|
||||
{8, crypto.SHA256, "SHA256"},
|
||||
{9, crypto.SHA384, "SHA384"},
|
||||
{10, crypto.SHA512, "SHA512"},
|
||||
{11, crypto.SHA224, "SHA224"},
|
||||
}
|
||||
|
||||
// HashIdToHash returns a crypto.Hash which corresponds to the given OpenPGP
|
||||
// hash id.
|
||||
func HashIdToHash(id byte) (h crypto.Hash, ok bool) {
|
||||
for _, m := range hashToHashIdMapping {
|
||||
if m.id == id {
|
||||
return m.hash, true
|
||||
}
|
||||
}
|
||||
return 0, false
|
||||
}
|
||||
|
||||
// HashIdToString returns the name of the hash function corresponding to the
|
||||
// given OpenPGP hash id.
|
||||
func HashIdToString(id byte) (name string, ok bool) {
|
||||
for _, m := range hashToHashIdMapping {
|
||||
if m.id == id {
|
||||
return m.name, true
|
||||
}
|
||||
}
|
||||
|
||||
return "", false
|
||||
}
|
||||
|
||||
// HashIdToHash returns an OpenPGP hash id which corresponds the given Hash.
|
||||
func HashToHashId(h crypto.Hash) (id byte, ok bool) {
|
||||
for _, m := range hashToHashIdMapping {
|
||||
if m.hash == h {
|
||||
return m.id, true
|
||||
}
|
||||
}
|
||||
return 0, false
|
||||
}
|
||||
418
vendor/golang.org/x/crypto/openpgp/write.go
generated
vendored
Normal file
418
vendor/golang.org/x/crypto/openpgp/write.go
generated
vendored
Normal file
@ -0,0 +1,418 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package openpgp
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"hash"
|
||||
"io"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/openpgp/armor"
|
||||
"golang.org/x/crypto/openpgp/errors"
|
||||
"golang.org/x/crypto/openpgp/packet"
|
||||
"golang.org/x/crypto/openpgp/s2k"
|
||||
)
|
||||
|
||||
// DetachSign signs message with the private key from signer (which must
|
||||
// already have been decrypted) and writes the signature to w.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func DetachSign(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error {
|
||||
return detachSign(w, signer, message, packet.SigTypeBinary, config)
|
||||
}
|
||||
|
||||
// ArmoredDetachSign signs message with the private key from signer (which
|
||||
// must already have been decrypted) and writes an armored signature to w.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func ArmoredDetachSign(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) (err error) {
|
||||
return armoredDetachSign(w, signer, message, packet.SigTypeBinary, config)
|
||||
}
|
||||
|
||||
// DetachSignText signs message (after canonicalising the line endings) with
|
||||
// the private key from signer (which must already have been decrypted) and
|
||||
// writes the signature to w.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func DetachSignText(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error {
|
||||
return detachSign(w, signer, message, packet.SigTypeText, config)
|
||||
}
|
||||
|
||||
// ArmoredDetachSignText signs message (after canonicalising the line endings)
|
||||
// with the private key from signer (which must already have been decrypted)
|
||||
// and writes an armored signature to w.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func ArmoredDetachSignText(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error {
|
||||
return armoredDetachSign(w, signer, message, packet.SigTypeText, config)
|
||||
}
|
||||
|
||||
func armoredDetachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) {
|
||||
out, err := armor.Encode(w, SignatureType, nil)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = detachSign(out, signer, message, sigType, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return out.Close()
|
||||
}
|
||||
|
||||
func detachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) {
|
||||
if signer.PrivateKey == nil {
|
||||
return errors.InvalidArgumentError("signing key doesn't have a private key")
|
||||
}
|
||||
if signer.PrivateKey.Encrypted {
|
||||
return errors.InvalidArgumentError("signing key is encrypted")
|
||||
}
|
||||
|
||||
sig := new(packet.Signature)
|
||||
sig.SigType = sigType
|
||||
sig.PubKeyAlgo = signer.PrivateKey.PubKeyAlgo
|
||||
sig.Hash = config.Hash()
|
||||
sig.CreationTime = config.Now()
|
||||
sig.IssuerKeyId = &signer.PrivateKey.KeyId
|
||||
|
||||
h, wrappedHash, err := hashForSignature(sig.Hash, sig.SigType)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
io.Copy(wrappedHash, message)
|
||||
|
||||
err = sig.Sign(h, signer.PrivateKey, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return sig.Serialize(w)
|
||||
}
|
||||
|
||||
// FileHints contains metadata about encrypted files. This metadata is, itself,
|
||||
// encrypted.
|
||||
type FileHints struct {
|
||||
// IsBinary can be set to hint that the contents are binary data.
|
||||
IsBinary bool
|
||||
// FileName hints at the name of the file that should be written. It's
|
||||
// truncated to 255 bytes if longer. It may be empty to suggest that the
|
||||
// file should not be written to disk. It may be equal to "_CONSOLE" to
|
||||
// suggest the data should not be written to disk.
|
||||
FileName string
|
||||
// ModTime contains the modification time of the file, or the zero time if not applicable.
|
||||
ModTime time.Time
|
||||
}
|
||||
|
||||
// SymmetricallyEncrypt acts like gpg -c: it encrypts a file with a passphrase.
|
||||
// The resulting WriteCloser must be closed after the contents of the file have
|
||||
// been written.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func SymmetricallyEncrypt(ciphertext io.Writer, passphrase []byte, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) {
|
||||
if hints == nil {
|
||||
hints = &FileHints{}
|
||||
}
|
||||
|
||||
key, err := packet.SerializeSymmetricKeyEncrypted(ciphertext, passphrase, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
w, err := packet.SerializeSymmetricallyEncrypted(ciphertext, config.Cipher(), key, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
literaldata := w
|
||||
if algo := config.Compression(); algo != packet.CompressionNone {
|
||||
var compConfig *packet.CompressionConfig
|
||||
if config != nil {
|
||||
compConfig = config.CompressionConfig
|
||||
}
|
||||
literaldata, err = packet.SerializeCompressed(w, algo, compConfig)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
var epochSeconds uint32
|
||||
if !hints.ModTime.IsZero() {
|
||||
epochSeconds = uint32(hints.ModTime.Unix())
|
||||
}
|
||||
return packet.SerializeLiteral(literaldata, hints.IsBinary, hints.FileName, epochSeconds)
|
||||
}
|
||||
|
||||
// intersectPreferences mutates and returns a prefix of a that contains only
|
||||
// the values in the intersection of a and b. The order of a is preserved.
|
||||
func intersectPreferences(a []uint8, b []uint8) (intersection []uint8) {
|
||||
var j int
|
||||
for _, v := range a {
|
||||
for _, v2 := range b {
|
||||
if v == v2 {
|
||||
a[j] = v
|
||||
j++
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return a[:j]
|
||||
}
|
||||
|
||||
func hashToHashId(h crypto.Hash) uint8 {
|
||||
v, ok := s2k.HashToHashId(h)
|
||||
if !ok {
|
||||
panic("tried to convert unknown hash")
|
||||
}
|
||||
return v
|
||||
}
|
||||
|
||||
// writeAndSign writes the data as a payload package and, optionally, signs
|
||||
// it. hints contains optional information, that is also encrypted,
|
||||
// that aids the recipients in processing the message. The resulting
|
||||
// WriteCloser must be closed after the contents of the file have been
|
||||
// written. If config is nil, sensible defaults will be used.
|
||||
func writeAndSign(payload io.WriteCloser, candidateHashes []uint8, signed *Entity, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) {
|
||||
var signer *packet.PrivateKey
|
||||
if signed != nil {
|
||||
signKey, ok := signed.signingKey(config.Now())
|
||||
if !ok {
|
||||
return nil, errors.InvalidArgumentError("no valid signing keys")
|
||||
}
|
||||
signer = signKey.PrivateKey
|
||||
if signer == nil {
|
||||
return nil, errors.InvalidArgumentError("no private key in signing key")
|
||||
}
|
||||
if signer.Encrypted {
|
||||
return nil, errors.InvalidArgumentError("signing key must be decrypted")
|
||||
}
|
||||
}
|
||||
|
||||
var hash crypto.Hash
|
||||
for _, hashId := range candidateHashes {
|
||||
if h, ok := s2k.HashIdToHash(hashId); ok && h.Available() {
|
||||
hash = h
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// If the hash specified by config is a candidate, we'll use that.
|
||||
if configuredHash := config.Hash(); configuredHash.Available() {
|
||||
for _, hashId := range candidateHashes {
|
||||
if h, ok := s2k.HashIdToHash(hashId); ok && h == configuredHash {
|
||||
hash = h
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if hash == 0 {
|
||||
hashId := candidateHashes[0]
|
||||
name, ok := s2k.HashIdToString(hashId)
|
||||
if !ok {
|
||||
name = "#" + strconv.Itoa(int(hashId))
|
||||
}
|
||||
return nil, errors.InvalidArgumentError("cannot encrypt because no candidate hash functions are compiled in. (Wanted " + name + " in this case.)")
|
||||
}
|
||||
|
||||
if signer != nil {
|
||||
ops := &packet.OnePassSignature{
|
||||
SigType: packet.SigTypeBinary,
|
||||
Hash: hash,
|
||||
PubKeyAlgo: signer.PubKeyAlgo,
|
||||
KeyId: signer.KeyId,
|
||||
IsLast: true,
|
||||
}
|
||||
if err := ops.Serialize(payload); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if hints == nil {
|
||||
hints = &FileHints{}
|
||||
}
|
||||
|
||||
w := payload
|
||||
if signer != nil {
|
||||
// If we need to write a signature packet after the literal
|
||||
// data then we need to stop literalData from closing
|
||||
// encryptedData.
|
||||
w = noOpCloser{w}
|
||||
|
||||
}
|
||||
var epochSeconds uint32
|
||||
if !hints.ModTime.IsZero() {
|
||||
epochSeconds = uint32(hints.ModTime.Unix())
|
||||
}
|
||||
literalData, err := packet.SerializeLiteral(w, hints.IsBinary, hints.FileName, epochSeconds)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if signer != nil {
|
||||
return signatureWriter{payload, literalData, hash, hash.New(), signer, config}, nil
|
||||
}
|
||||
return literalData, nil
|
||||
}
|
||||
|
||||
// Encrypt encrypts a message to a number of recipients and, optionally, signs
|
||||
// it. hints contains optional information, that is also encrypted, that aids
|
||||
// the recipients in processing the message. The resulting WriteCloser must
|
||||
// be closed after the contents of the file have been written.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func Encrypt(ciphertext io.Writer, to []*Entity, signed *Entity, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) {
|
||||
if len(to) == 0 {
|
||||
return nil, errors.InvalidArgumentError("no encryption recipient provided")
|
||||
}
|
||||
|
||||
// These are the possible ciphers that we'll use for the message.
|
||||
candidateCiphers := []uint8{
|
||||
uint8(packet.CipherAES128),
|
||||
uint8(packet.CipherAES256),
|
||||
uint8(packet.CipherCAST5),
|
||||
}
|
||||
// These are the possible hash functions that we'll use for the signature.
|
||||
candidateHashes := []uint8{
|
||||
hashToHashId(crypto.SHA256),
|
||||
hashToHashId(crypto.SHA384),
|
||||
hashToHashId(crypto.SHA512),
|
||||
hashToHashId(crypto.SHA1),
|
||||
hashToHashId(crypto.RIPEMD160),
|
||||
}
|
||||
// In the event that a recipient doesn't specify any supported ciphers
|
||||
// or hash functions, these are the ones that we assume that every
|
||||
// implementation supports.
|
||||
defaultCiphers := candidateCiphers[len(candidateCiphers)-1:]
|
||||
defaultHashes := candidateHashes[len(candidateHashes)-1:]
|
||||
|
||||
encryptKeys := make([]Key, len(to))
|
||||
for i := range to {
|
||||
var ok bool
|
||||
encryptKeys[i], ok = to[i].encryptionKey(config.Now())
|
||||
if !ok {
|
||||
return nil, errors.InvalidArgumentError("cannot encrypt a message to key id " + strconv.FormatUint(to[i].PrimaryKey.KeyId, 16) + " because it has no encryption keys")
|
||||
}
|
||||
|
||||
sig := to[i].primaryIdentity().SelfSignature
|
||||
|
||||
preferredSymmetric := sig.PreferredSymmetric
|
||||
if len(preferredSymmetric) == 0 {
|
||||
preferredSymmetric = defaultCiphers
|
||||
}
|
||||
preferredHashes := sig.PreferredHash
|
||||
if len(preferredHashes) == 0 {
|
||||
preferredHashes = defaultHashes
|
||||
}
|
||||
candidateCiphers = intersectPreferences(candidateCiphers, preferredSymmetric)
|
||||
candidateHashes = intersectPreferences(candidateHashes, preferredHashes)
|
||||
}
|
||||
|
||||
if len(candidateCiphers) == 0 || len(candidateHashes) == 0 {
|
||||
return nil, errors.InvalidArgumentError("cannot encrypt because recipient set shares no common algorithms")
|
||||
}
|
||||
|
||||
cipher := packet.CipherFunction(candidateCiphers[0])
|
||||
// If the cipher specified by config is a candidate, we'll use that.
|
||||
configuredCipher := config.Cipher()
|
||||
for _, c := range candidateCiphers {
|
||||
cipherFunc := packet.CipherFunction(c)
|
||||
if cipherFunc == configuredCipher {
|
||||
cipher = cipherFunc
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
symKey := make([]byte, cipher.KeySize())
|
||||
if _, err := io.ReadFull(config.Random(), symKey); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for _, key := range encryptKeys {
|
||||
if err := packet.SerializeEncryptedKey(ciphertext, key.PublicKey, cipher, symKey, config); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
payload, err := packet.SerializeSymmetricallyEncrypted(ciphertext, cipher, symKey, config)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return writeAndSign(payload, candidateHashes, signed, hints, config)
|
||||
}
|
||||
|
||||
// Sign signs a message. The resulting WriteCloser must be closed after the
|
||||
// contents of the file have been written. hints contains optional information
|
||||
// that aids the recipients in processing the message.
|
||||
// If config is nil, sensible defaults will be used.
|
||||
func Sign(output io.Writer, signed *Entity, hints *FileHints, config *packet.Config) (input io.WriteCloser, err error) {
|
||||
if signed == nil {
|
||||
return nil, errors.InvalidArgumentError("no signer provided")
|
||||
}
|
||||
|
||||
// These are the possible hash functions that we'll use for the signature.
|
||||
candidateHashes := []uint8{
|
||||
hashToHashId(crypto.SHA256),
|
||||
hashToHashId(crypto.SHA384),
|
||||
hashToHashId(crypto.SHA512),
|
||||
hashToHashId(crypto.SHA1),
|
||||
hashToHashId(crypto.RIPEMD160),
|
||||
}
|
||||
defaultHashes := candidateHashes[len(candidateHashes)-1:]
|
||||
preferredHashes := signed.primaryIdentity().SelfSignature.PreferredHash
|
||||
if len(preferredHashes) == 0 {
|
||||
preferredHashes = defaultHashes
|
||||
}
|
||||
candidateHashes = intersectPreferences(candidateHashes, preferredHashes)
|
||||
return writeAndSign(noOpCloser{output}, candidateHashes, signed, hints, config)
|
||||
}
|
||||
|
||||
// signatureWriter hashes the contents of a message while passing it along to
|
||||
// literalData. When closed, it closes literalData, writes a signature packet
|
||||
// to encryptedData and then also closes encryptedData.
|
||||
type signatureWriter struct {
|
||||
encryptedData io.WriteCloser
|
||||
literalData io.WriteCloser
|
||||
hashType crypto.Hash
|
||||
h hash.Hash
|
||||
signer *packet.PrivateKey
|
||||
config *packet.Config
|
||||
}
|
||||
|
||||
func (s signatureWriter) Write(data []byte) (int, error) {
|
||||
s.h.Write(data)
|
||||
return s.literalData.Write(data)
|
||||
}
|
||||
|
||||
func (s signatureWriter) Close() error {
|
||||
sig := &packet.Signature{
|
||||
SigType: packet.SigTypeBinary,
|
||||
PubKeyAlgo: s.signer.PubKeyAlgo,
|
||||
Hash: s.hashType,
|
||||
CreationTime: s.config.Now(),
|
||||
IssuerKeyId: &s.signer.KeyId,
|
||||
}
|
||||
|
||||
if err := sig.Sign(s.h, s.signer, s.config); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := s.literalData.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := sig.Serialize(s.encryptedData); err != nil {
|
||||
return err
|
||||
}
|
||||
return s.encryptedData.Close()
|
||||
}
|
||||
|
||||
// noOpCloser is like an ioutil.NopCloser, but for an io.Writer.
|
||||
// TODO: we have two of these in OpenPGP packages alone. This probably needs
|
||||
// to be promoted somewhere more common.
|
||||
type noOpCloser struct {
|
||||
w io.Writer
|
||||
}
|
||||
|
||||
func (c noOpCloser) Write(data []byte) (n int, err error) {
|
||||
return c.w.Write(data)
|
||||
}
|
||||
|
||||
func (c noOpCloser) Close() error {
|
||||
return nil
|
||||
}
|
||||
77
vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go
generated
vendored
Normal file
77
vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go
generated
vendored
Normal file
@ -0,0 +1,77 @@
|
||||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
/*
|
||||
Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC
|
||||
2898 / PKCS #5 v2.0.
|
||||
|
||||
A key derivation function is useful when encrypting data based on a password
|
||||
or any other not-fully-random data. It uses a pseudorandom function to derive
|
||||
a secure encryption key based on the password.
|
||||
|
||||
While v2.0 of the standard defines only one pseudorandom function to use,
|
||||
HMAC-SHA1, the drafted v2.1 specification allows use of all five FIPS Approved
|
||||
Hash Functions SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 for HMAC. To
|
||||
choose, you can pass the `New` functions from the different SHA packages to
|
||||
pbkdf2.Key.
|
||||
*/
|
||||
package pbkdf2 // import "golang.org/x/crypto/pbkdf2"
|
||||
|
||||
import (
|
||||
"crypto/hmac"
|
||||
"hash"
|
||||
)
|
||||
|
||||
// Key derives a key from the password, salt and iteration count, returning a
|
||||
// []byte of length keylen that can be used as cryptographic key. The key is
|
||||
// derived based on the method described as PBKDF2 with the HMAC variant using
|
||||
// the supplied hash function.
|
||||
//
|
||||
// For example, to use a HMAC-SHA-1 based PBKDF2 key derivation function, you
|
||||
// can get a derived key for e.g. AES-256 (which needs a 32-byte key) by
|
||||
// doing:
|
||||
//
|
||||
// dk := pbkdf2.Key([]byte("some password"), salt, 4096, 32, sha1.New)
|
||||
//
|
||||
// Remember to get a good random salt. At least 8 bytes is recommended by the
|
||||
// RFC.
|
||||
//
|
||||
// Using a higher iteration count will increase the cost of an exhaustive
|
||||
// search but will also make derivation proportionally slower.
|
||||
func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
|
||||
prf := hmac.New(h, password)
|
||||
hashLen := prf.Size()
|
||||
numBlocks := (keyLen + hashLen - 1) / hashLen
|
||||
|
||||
var buf [4]byte
|
||||
dk := make([]byte, 0, numBlocks*hashLen)
|
||||
U := make([]byte, hashLen)
|
||||
for block := 1; block <= numBlocks; block++ {
|
||||
// N.B.: || means concatenation, ^ means XOR
|
||||
// for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter
|
||||
// U_1 = PRF(password, salt || uint(i))
|
||||
prf.Reset()
|
||||
prf.Write(salt)
|
||||
buf[0] = byte(block >> 24)
|
||||
buf[1] = byte(block >> 16)
|
||||
buf[2] = byte(block >> 8)
|
||||
buf[3] = byte(block)
|
||||
prf.Write(buf[:4])
|
||||
dk = prf.Sum(dk)
|
||||
T := dk[len(dk)-hashLen:]
|
||||
copy(U, T)
|
||||
|
||||
// U_n = PRF(password, U_(n-1))
|
||||
for n := 2; n <= iter; n++ {
|
||||
prf.Reset()
|
||||
prf.Write(U)
|
||||
U = U[:0]
|
||||
U = prf.Sum(U)
|
||||
for x := range U {
|
||||
T[x] ^= U[x]
|
||||
}
|
||||
}
|
||||
}
|
||||
return dk[:keyLen]
|
||||
}
|
||||
202
vendor/gopkg.in/square/go-jose.v2/LICENSE
generated
vendored
Normal file
202
vendor/gopkg.in/square/go-jose.v2/LICENSE
generated
vendored
Normal file
@ -0,0 +1,202 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
118
vendor/gopkg.in/square/go-jose.v2/README.md
generated
vendored
Normal file
118
vendor/gopkg.in/square/go-jose.v2/README.md
generated
vendored
Normal file
@ -0,0 +1,118 @@
|
||||
# Go JOSE
|
||||
|
||||
[](https://godoc.org/gopkg.in/square/go-jose.v1)
|
||||
[](https://godoc.org/gopkg.in/square/go-jose.v2)
|
||||
[](https://raw.githubusercontent.com/square/go-jose/master/LICENSE)
|
||||
[](https://travis-ci.org/square/go-jose)
|
||||
[](https://coveralls.io/r/square/go-jose)
|
||||
|
||||
Package jose aims to provide an implementation of the Javascript Object Signing
|
||||
and Encryption set of standards. This includes support for JSON Web Encryption,
|
||||
JSON Web Signature, and JSON Web Token standards.
|
||||
|
||||
**Disclaimer**: This library contains encryption software that is subject to
|
||||
the U.S. Export Administration Regulations. You may not export, re-export,
|
||||
transfer or download this code or any part of it in violation of any United
|
||||
States law, directive or regulation. In particular this software may not be
|
||||
exported or re-exported in any form or on any media to Iran, North Sudan,
|
||||
Syria, Cuba, or North Korea, or to denied persons or entities mentioned on any
|
||||
US maintained blocked list.
|
||||
|
||||
## Overview
|
||||
|
||||
The implementation follows the
|
||||
[JSON Web Encryption](http://dx.doi.org/10.17487/RFC7516) (RFC 7516),
|
||||
[JSON Web Signature](http://dx.doi.org/10.17487/RFC7515) (RFC 7515), and
|
||||
[JSON Web Token](http://dx.doi.org/10.17487/RFC7519) (RFC 7519).
|
||||
Tables of supported algorithms are shown below. The library supports both
|
||||
the compact and full serialization formats, and has optional support for
|
||||
multiple recipients. It also comes with a small command-line utility
|
||||
([`jose-util`](https://github.com/square/go-jose/tree/v2/jose-util))
|
||||
for dealing with JOSE messages in a shell.
|
||||
|
||||
**Note**: We use a forked version of the `encoding/json` package from the Go
|
||||
standard library which uses case-sensitive matching for member names (instead
|
||||
of [case-insensitive matching](https://www.ietf.org/mail-archive/web/json/current/msg03763.html)).
|
||||
This is to avoid differences in interpretation of messages between go-jose and
|
||||
libraries in other languages.
|
||||
|
||||
### Versions
|
||||
|
||||
We use [gopkg.in](https://gopkg.in) for versioning.
|
||||
|
||||
[Version 2](https://gopkg.in/square/go-jose.v2)
|
||||
([branch](https://github.com/square/go-jose/tree/v2),
|
||||
[doc](https://godoc.org/gopkg.in/square/go-jose.v2)) is the current version:
|
||||
|
||||
import "gopkg.in/square/go-jose.v2"
|
||||
|
||||
The old `v1` branch ([go-jose.v1](https://gopkg.in/square/go-jose.v1)) will
|
||||
still receive backported bug fixes and security fixes, but otherwise
|
||||
development is frozen. All new feature development takes place on the `v2`
|
||||
branch. Version 2 also contains additional sub-packages such as the
|
||||
[jwt](https://godoc.org/gopkg.in/square/go-jose.v2/jwt) implementation
|
||||
contributed by [@shaxbee](https://github.com/shaxbee).
|
||||
|
||||
### Supported algorithms
|
||||
|
||||
See below for a table of supported algorithms. Algorithm identifiers match
|
||||
the names in the [JSON Web Algorithms](http://dx.doi.org/10.17487/RFC7518)
|
||||
standard where possible. The Godoc reference has a list of constants.
|
||||
|
||||
Key encryption | Algorithm identifier(s)
|
||||
:------------------------- | :------------------------------
|
||||
RSA-PKCS#1v1.5 | RSA1_5
|
||||
RSA-OAEP | RSA-OAEP, RSA-OAEP-256
|
||||
AES key wrap | A128KW, A192KW, A256KW
|
||||
AES-GCM key wrap | A128GCMKW, A192GCMKW, A256GCMKW
|
||||
ECDH-ES + AES key wrap | ECDH-ES+A128KW, ECDH-ES+A192KW, ECDH-ES+A256KW
|
||||
ECDH-ES (direct) | ECDH-ES<sup>1</sup>
|
||||
Direct encryption | dir<sup>1</sup>
|
||||
|
||||
<sup>1. Not supported in multi-recipient mode</sup>
|
||||
|
||||
Signing / MAC | Algorithm identifier(s)
|
||||
:------------------------- | :------------------------------
|
||||
RSASSA-PKCS#1v1.5 | RS256, RS384, RS512
|
||||
RSASSA-PSS | PS256, PS384, PS512
|
||||
HMAC | HS256, HS384, HS512
|
||||
ECDSA | ES256, ES384, ES512
|
||||
Ed25519 | EdDSA<sup>2</sup>
|
||||
|
||||
<sup>2. Only available in version 2 of the package</sup>
|
||||
|
||||
Content encryption | Algorithm identifier(s)
|
||||
:------------------------- | :------------------------------
|
||||
AES-CBC+HMAC | A128CBC-HS256, A192CBC-HS384, A256CBC-HS512
|
||||
AES-GCM | A128GCM, A192GCM, A256GCM
|
||||
|
||||
Compression | Algorithm identifiers(s)
|
||||
:------------------------- | -------------------------------
|
||||
DEFLATE (RFC 1951) | DEF
|
||||
|
||||
### Supported key types
|
||||
|
||||
See below for a table of supported key types. These are understood by the
|
||||
library, and can be passed to corresponding functions such as `NewEncrypter` or
|
||||
`NewSigner`. Each of these keys can also be wrapped in a JWK if desired, which
|
||||
allows attaching a key id.
|
||||
|
||||
Algorithm(s) | Corresponding types
|
||||
:------------------------- | -------------------------------
|
||||
RSA | *[rsa.PublicKey](http://golang.org/pkg/crypto/rsa/#PublicKey), *[rsa.PrivateKey](http://golang.org/pkg/crypto/rsa/#PrivateKey)
|
||||
ECDH, ECDSA | *[ecdsa.PublicKey](http://golang.org/pkg/crypto/ecdsa/#PublicKey), *[ecdsa.PrivateKey](http://golang.org/pkg/crypto/ecdsa/#PrivateKey)
|
||||
EdDSA<sup>1</sup> | [ed25519.PublicKey](https://godoc.org/golang.org/x/crypto/ed25519#PublicKey), [ed25519.PrivateKey](https://godoc.org/golang.org/x/crypto/ed25519#PrivateKey)
|
||||
AES, HMAC | []byte
|
||||
|
||||
<sup>1. Only available in version 2 of the package</sup>
|
||||
|
||||
## Examples
|
||||
|
||||
[](https://godoc.org/gopkg.in/square/go-jose.v1)
|
||||
[](https://godoc.org/gopkg.in/square/go-jose.v2)
|
||||
|
||||
Examples can be found in the Godoc
|
||||
reference for this package. The
|
||||
[`jose-util`](https://github.com/square/go-jose/tree/v2/jose-util)
|
||||
subdirectory also contains a small command-line utility which might be useful
|
||||
as an example.
|
||||
592
vendor/gopkg.in/square/go-jose.v2/asymmetric.go
generated
vendored
Normal file
592
vendor/gopkg.in/square/go-jose.v2/asymmetric.go
generated
vendored
Normal file
@ -0,0 +1,592 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/aes"
|
||||
"crypto/ecdsa"
|
||||
"crypto/rand"
|
||||
"crypto/rsa"
|
||||
"crypto/sha1"
|
||||
"crypto/sha256"
|
||||
"errors"
|
||||
"fmt"
|
||||
"math/big"
|
||||
|
||||
"golang.org/x/crypto/ed25519"
|
||||
"gopkg.in/square/go-jose.v2/cipher"
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// A generic RSA-based encrypter/verifier
|
||||
type rsaEncrypterVerifier struct {
|
||||
publicKey *rsa.PublicKey
|
||||
}
|
||||
|
||||
// A generic RSA-based decrypter/signer
|
||||
type rsaDecrypterSigner struct {
|
||||
privateKey *rsa.PrivateKey
|
||||
}
|
||||
|
||||
// A generic EC-based encrypter/verifier
|
||||
type ecEncrypterVerifier struct {
|
||||
publicKey *ecdsa.PublicKey
|
||||
}
|
||||
|
||||
type edEncrypterVerifier struct {
|
||||
publicKey ed25519.PublicKey
|
||||
}
|
||||
|
||||
// A key generator for ECDH-ES
|
||||
type ecKeyGenerator struct {
|
||||
size int
|
||||
algID string
|
||||
publicKey *ecdsa.PublicKey
|
||||
}
|
||||
|
||||
// A generic EC-based decrypter/signer
|
||||
type ecDecrypterSigner struct {
|
||||
privateKey *ecdsa.PrivateKey
|
||||
}
|
||||
|
||||
type edDecrypterSigner struct {
|
||||
privateKey ed25519.PrivateKey
|
||||
}
|
||||
|
||||
// newRSARecipient creates recipientKeyInfo based on the given key.
|
||||
func newRSARecipient(keyAlg KeyAlgorithm, publicKey *rsa.PublicKey) (recipientKeyInfo, error) {
|
||||
// Verify that key management algorithm is supported by this encrypter
|
||||
switch keyAlg {
|
||||
case RSA1_5, RSA_OAEP, RSA_OAEP_256:
|
||||
default:
|
||||
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
if publicKey == nil {
|
||||
return recipientKeyInfo{}, errors.New("invalid public key")
|
||||
}
|
||||
|
||||
return recipientKeyInfo{
|
||||
keyAlg: keyAlg,
|
||||
keyEncrypter: &rsaEncrypterVerifier{
|
||||
publicKey: publicKey,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// newRSASigner creates a recipientSigInfo based on the given key.
|
||||
func newRSASigner(sigAlg SignatureAlgorithm, privateKey *rsa.PrivateKey) (recipientSigInfo, error) {
|
||||
// Verify that key management algorithm is supported by this encrypter
|
||||
switch sigAlg {
|
||||
case RS256, RS384, RS512, PS256, PS384, PS512:
|
||||
default:
|
||||
return recipientSigInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
if privateKey == nil {
|
||||
return recipientSigInfo{}, errors.New("invalid private key")
|
||||
}
|
||||
|
||||
return recipientSigInfo{
|
||||
sigAlg: sigAlg,
|
||||
publicKey: staticPublicKey(&JSONWebKey{
|
||||
Key: privateKey.Public(),
|
||||
}),
|
||||
signer: &rsaDecrypterSigner{
|
||||
privateKey: privateKey,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
func newEd25519Signer(sigAlg SignatureAlgorithm, privateKey ed25519.PrivateKey) (recipientSigInfo, error) {
|
||||
if sigAlg != EdDSA {
|
||||
return recipientSigInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
if privateKey == nil {
|
||||
return recipientSigInfo{}, errors.New("invalid private key")
|
||||
}
|
||||
return recipientSigInfo{
|
||||
sigAlg: sigAlg,
|
||||
publicKey: staticPublicKey(&JSONWebKey{
|
||||
Key: privateKey.Public(),
|
||||
}),
|
||||
signer: &edDecrypterSigner{
|
||||
privateKey: privateKey,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// newECDHRecipient creates recipientKeyInfo based on the given key.
|
||||
func newECDHRecipient(keyAlg KeyAlgorithm, publicKey *ecdsa.PublicKey) (recipientKeyInfo, error) {
|
||||
// Verify that key management algorithm is supported by this encrypter
|
||||
switch keyAlg {
|
||||
case ECDH_ES, ECDH_ES_A128KW, ECDH_ES_A192KW, ECDH_ES_A256KW:
|
||||
default:
|
||||
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
if publicKey == nil || !publicKey.Curve.IsOnCurve(publicKey.X, publicKey.Y) {
|
||||
return recipientKeyInfo{}, errors.New("invalid public key")
|
||||
}
|
||||
|
||||
return recipientKeyInfo{
|
||||
keyAlg: keyAlg,
|
||||
keyEncrypter: &ecEncrypterVerifier{
|
||||
publicKey: publicKey,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// newECDSASigner creates a recipientSigInfo based on the given key.
|
||||
func newECDSASigner(sigAlg SignatureAlgorithm, privateKey *ecdsa.PrivateKey) (recipientSigInfo, error) {
|
||||
// Verify that key management algorithm is supported by this encrypter
|
||||
switch sigAlg {
|
||||
case ES256, ES384, ES512:
|
||||
default:
|
||||
return recipientSigInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
if privateKey == nil {
|
||||
return recipientSigInfo{}, errors.New("invalid private key")
|
||||
}
|
||||
|
||||
return recipientSigInfo{
|
||||
sigAlg: sigAlg,
|
||||
publicKey: staticPublicKey(&JSONWebKey{
|
||||
Key: privateKey.Public(),
|
||||
}),
|
||||
signer: &ecDecrypterSigner{
|
||||
privateKey: privateKey,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Encrypt the given payload and update the object.
|
||||
func (ctx rsaEncrypterVerifier) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
|
||||
encryptedKey, err := ctx.encrypt(cek, alg)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
return recipientInfo{
|
||||
encryptedKey: encryptedKey,
|
||||
header: &rawHeader{},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Encrypt the given payload. Based on the key encryption algorithm,
|
||||
// this will either use RSA-PKCS1v1.5 or RSA-OAEP (with SHA-1 or SHA-256).
|
||||
func (ctx rsaEncrypterVerifier) encrypt(cek []byte, alg KeyAlgorithm) ([]byte, error) {
|
||||
switch alg {
|
||||
case RSA1_5:
|
||||
return rsa.EncryptPKCS1v15(RandReader, ctx.publicKey, cek)
|
||||
case RSA_OAEP:
|
||||
return rsa.EncryptOAEP(sha1.New(), RandReader, ctx.publicKey, cek, []byte{})
|
||||
case RSA_OAEP_256:
|
||||
return rsa.EncryptOAEP(sha256.New(), RandReader, ctx.publicKey, cek, []byte{})
|
||||
}
|
||||
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// Decrypt the given payload and return the content encryption key.
|
||||
func (ctx rsaDecrypterSigner) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
|
||||
return ctx.decrypt(recipient.encryptedKey, headers.getAlgorithm(), generator)
|
||||
}
|
||||
|
||||
// Decrypt the given payload. Based on the key encryption algorithm,
|
||||
// this will either use RSA-PKCS1v1.5 or RSA-OAEP (with SHA-1 or SHA-256).
|
||||
func (ctx rsaDecrypterSigner) decrypt(jek []byte, alg KeyAlgorithm, generator keyGenerator) ([]byte, error) {
|
||||
// Note: The random reader on decrypt operations is only used for blinding,
|
||||
// so stubbing is meanlingless (hence the direct use of rand.Reader).
|
||||
switch alg {
|
||||
case RSA1_5:
|
||||
defer func() {
|
||||
// DecryptPKCS1v15SessionKey sometimes panics on an invalid payload
|
||||
// because of an index out of bounds error, which we want to ignore.
|
||||
// This has been fixed in Go 1.3.1 (released 2014/08/13), the recover()
|
||||
// only exists for preventing crashes with unpatched versions.
|
||||
// See: https://groups.google.com/forum/#!topic/golang-dev/7ihX6Y6kx9k
|
||||
// See: https://code.google.com/p/go/source/detail?r=58ee390ff31602edb66af41ed10901ec95904d33
|
||||
_ = recover()
|
||||
}()
|
||||
|
||||
// Perform some input validation.
|
||||
keyBytes := ctx.privateKey.PublicKey.N.BitLen() / 8
|
||||
if keyBytes != len(jek) {
|
||||
// Input size is incorrect, the encrypted payload should always match
|
||||
// the size of the public modulus (e.g. using a 2048 bit key will
|
||||
// produce 256 bytes of output). Reject this since it's invalid input.
|
||||
return nil, ErrCryptoFailure
|
||||
}
|
||||
|
||||
cek, _, err := generator.genKey()
|
||||
if err != nil {
|
||||
return nil, ErrCryptoFailure
|
||||
}
|
||||
|
||||
// When decrypting an RSA-PKCS1v1.5 payload, we must take precautions to
|
||||
// prevent chosen-ciphertext attacks as described in RFC 3218, "Preventing
|
||||
// the Million Message Attack on Cryptographic Message Syntax". We are
|
||||
// therefore deliberately ignoring errors here.
|
||||
_ = rsa.DecryptPKCS1v15SessionKey(rand.Reader, ctx.privateKey, jek, cek)
|
||||
|
||||
return cek, nil
|
||||
case RSA_OAEP:
|
||||
// Use rand.Reader for RSA blinding
|
||||
return rsa.DecryptOAEP(sha1.New(), rand.Reader, ctx.privateKey, jek, []byte{})
|
||||
case RSA_OAEP_256:
|
||||
// Use rand.Reader for RSA blinding
|
||||
return rsa.DecryptOAEP(sha256.New(), rand.Reader, ctx.privateKey, jek, []byte{})
|
||||
}
|
||||
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// Sign the given payload
|
||||
func (ctx rsaDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
|
||||
var hash crypto.Hash
|
||||
|
||||
switch alg {
|
||||
case RS256, PS256:
|
||||
hash = crypto.SHA256
|
||||
case RS384, PS384:
|
||||
hash = crypto.SHA384
|
||||
case RS512, PS512:
|
||||
hash = crypto.SHA512
|
||||
default:
|
||||
return Signature{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
hasher := hash.New()
|
||||
|
||||
// According to documentation, Write() on hash never fails
|
||||
_, _ = hasher.Write(payload)
|
||||
hashed := hasher.Sum(nil)
|
||||
|
||||
var out []byte
|
||||
var err error
|
||||
|
||||
switch alg {
|
||||
case RS256, RS384, RS512:
|
||||
out, err = rsa.SignPKCS1v15(RandReader, ctx.privateKey, hash, hashed)
|
||||
case PS256, PS384, PS512:
|
||||
out, err = rsa.SignPSS(RandReader, ctx.privateKey, hash, hashed, &rsa.PSSOptions{
|
||||
SaltLength: rsa.PSSSaltLengthAuto,
|
||||
})
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return Signature{}, err
|
||||
}
|
||||
|
||||
return Signature{
|
||||
Signature: out,
|
||||
protected: &rawHeader{},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Verify the given payload
|
||||
func (ctx rsaEncrypterVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
|
||||
var hash crypto.Hash
|
||||
|
||||
switch alg {
|
||||
case RS256, PS256:
|
||||
hash = crypto.SHA256
|
||||
case RS384, PS384:
|
||||
hash = crypto.SHA384
|
||||
case RS512, PS512:
|
||||
hash = crypto.SHA512
|
||||
default:
|
||||
return ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
hasher := hash.New()
|
||||
|
||||
// According to documentation, Write() on hash never fails
|
||||
_, _ = hasher.Write(payload)
|
||||
hashed := hasher.Sum(nil)
|
||||
|
||||
switch alg {
|
||||
case RS256, RS384, RS512:
|
||||
return rsa.VerifyPKCS1v15(ctx.publicKey, hash, hashed, signature)
|
||||
case PS256, PS384, PS512:
|
||||
return rsa.VerifyPSS(ctx.publicKey, hash, hashed, signature, nil)
|
||||
}
|
||||
|
||||
return ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// Encrypt the given payload and update the object.
|
||||
func (ctx ecEncrypterVerifier) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
|
||||
switch alg {
|
||||
case ECDH_ES:
|
||||
// ECDH-ES mode doesn't wrap a key, the shared secret is used directly as the key.
|
||||
return recipientInfo{
|
||||
header: &rawHeader{},
|
||||
}, nil
|
||||
case ECDH_ES_A128KW, ECDH_ES_A192KW, ECDH_ES_A256KW:
|
||||
default:
|
||||
return recipientInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
generator := ecKeyGenerator{
|
||||
algID: string(alg),
|
||||
publicKey: ctx.publicKey,
|
||||
}
|
||||
|
||||
switch alg {
|
||||
case ECDH_ES_A128KW:
|
||||
generator.size = 16
|
||||
case ECDH_ES_A192KW:
|
||||
generator.size = 24
|
||||
case ECDH_ES_A256KW:
|
||||
generator.size = 32
|
||||
}
|
||||
|
||||
kek, header, err := generator.genKey()
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
block, err := aes.NewCipher(kek)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
jek, err := josecipher.KeyWrap(block, cek)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
return recipientInfo{
|
||||
encryptedKey: jek,
|
||||
header: &header,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Get key size for EC key generator
|
||||
func (ctx ecKeyGenerator) keySize() int {
|
||||
return ctx.size
|
||||
}
|
||||
|
||||
// Get a content encryption key for ECDH-ES
|
||||
func (ctx ecKeyGenerator) genKey() ([]byte, rawHeader, error) {
|
||||
priv, err := ecdsa.GenerateKey(ctx.publicKey.Curve, RandReader)
|
||||
if err != nil {
|
||||
return nil, rawHeader{}, err
|
||||
}
|
||||
|
||||
out := josecipher.DeriveECDHES(ctx.algID, []byte{}, []byte{}, priv, ctx.publicKey, ctx.size)
|
||||
|
||||
b, err := json.Marshal(&JSONWebKey{
|
||||
Key: &priv.PublicKey,
|
||||
})
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
headers := rawHeader{
|
||||
headerEPK: makeRawMessage(b),
|
||||
}
|
||||
|
||||
return out, headers, nil
|
||||
}
|
||||
|
||||
// Decrypt the given payload and return the content encryption key.
|
||||
func (ctx ecDecrypterSigner) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
|
||||
epk, err := headers.getEPK()
|
||||
if err != nil {
|
||||
return nil, errors.New("square/go-jose: invalid epk header")
|
||||
}
|
||||
if epk == nil {
|
||||
return nil, errors.New("square/go-jose: missing epk header")
|
||||
}
|
||||
|
||||
publicKey, ok := epk.Key.(*ecdsa.PublicKey)
|
||||
if publicKey == nil || !ok {
|
||||
return nil, errors.New("square/go-jose: invalid epk header")
|
||||
}
|
||||
|
||||
if !ctx.privateKey.Curve.IsOnCurve(publicKey.X, publicKey.Y) {
|
||||
return nil, errors.New("square/go-jose: invalid public key in epk header")
|
||||
}
|
||||
|
||||
apuData, err := headers.getAPU()
|
||||
if err != nil {
|
||||
return nil, errors.New("square/go-jose: invalid apu header")
|
||||
}
|
||||
apvData, err := headers.getAPV()
|
||||
if err != nil {
|
||||
return nil, errors.New("square/go-jose: invalid apv header")
|
||||
}
|
||||
|
||||
deriveKey := func(algID string, size int) []byte {
|
||||
return josecipher.DeriveECDHES(algID, apuData.bytes(), apvData.bytes(), ctx.privateKey, publicKey, size)
|
||||
}
|
||||
|
||||
var keySize int
|
||||
|
||||
algorithm := headers.getAlgorithm()
|
||||
switch algorithm {
|
||||
case ECDH_ES:
|
||||
// ECDH-ES uses direct key agreement, no key unwrapping necessary.
|
||||
return deriveKey(string(headers.getEncryption()), generator.keySize()), nil
|
||||
case ECDH_ES_A128KW:
|
||||
keySize = 16
|
||||
case ECDH_ES_A192KW:
|
||||
keySize = 24
|
||||
case ECDH_ES_A256KW:
|
||||
keySize = 32
|
||||
default:
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
key := deriveKey(string(algorithm), keySize)
|
||||
block, err := aes.NewCipher(key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return josecipher.KeyUnwrap(block, recipient.encryptedKey)
|
||||
}
|
||||
|
||||
func (ctx edDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
|
||||
if alg != EdDSA {
|
||||
return Signature{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
sig, err := ctx.privateKey.Sign(RandReader, payload, crypto.Hash(0))
|
||||
if err != nil {
|
||||
return Signature{}, err
|
||||
}
|
||||
|
||||
return Signature{
|
||||
Signature: sig,
|
||||
protected: &rawHeader{},
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (ctx edEncrypterVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
|
||||
if alg != EdDSA {
|
||||
return ErrUnsupportedAlgorithm
|
||||
}
|
||||
ok := ed25519.Verify(ctx.publicKey, payload, signature)
|
||||
if !ok {
|
||||
return errors.New("square/go-jose: ed25519 signature failed to verify")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Sign the given payload
|
||||
func (ctx ecDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
|
||||
var expectedBitSize int
|
||||
var hash crypto.Hash
|
||||
|
||||
switch alg {
|
||||
case ES256:
|
||||
expectedBitSize = 256
|
||||
hash = crypto.SHA256
|
||||
case ES384:
|
||||
expectedBitSize = 384
|
||||
hash = crypto.SHA384
|
||||
case ES512:
|
||||
expectedBitSize = 521
|
||||
hash = crypto.SHA512
|
||||
}
|
||||
|
||||
curveBits := ctx.privateKey.Curve.Params().BitSize
|
||||
if expectedBitSize != curveBits {
|
||||
return Signature{}, fmt.Errorf("square/go-jose: expected %d bit key, got %d bits instead", expectedBitSize, curveBits)
|
||||
}
|
||||
|
||||
hasher := hash.New()
|
||||
|
||||
// According to documentation, Write() on hash never fails
|
||||
_, _ = hasher.Write(payload)
|
||||
hashed := hasher.Sum(nil)
|
||||
|
||||
r, s, err := ecdsa.Sign(RandReader, ctx.privateKey, hashed)
|
||||
if err != nil {
|
||||
return Signature{}, err
|
||||
}
|
||||
|
||||
keyBytes := curveBits / 8
|
||||
if curveBits%8 > 0 {
|
||||
keyBytes++
|
||||
}
|
||||
|
||||
// We serialize the outputs (r and s) into big-endian byte arrays and pad
|
||||
// them with zeros on the left to make sure the sizes work out. Both arrays
|
||||
// must be keyBytes long, and the output must be 2*keyBytes long.
|
||||
rBytes := r.Bytes()
|
||||
rBytesPadded := make([]byte, keyBytes)
|
||||
copy(rBytesPadded[keyBytes-len(rBytes):], rBytes)
|
||||
|
||||
sBytes := s.Bytes()
|
||||
sBytesPadded := make([]byte, keyBytes)
|
||||
copy(sBytesPadded[keyBytes-len(sBytes):], sBytes)
|
||||
|
||||
out := append(rBytesPadded, sBytesPadded...)
|
||||
|
||||
return Signature{
|
||||
Signature: out,
|
||||
protected: &rawHeader{},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Verify the given payload
|
||||
func (ctx ecEncrypterVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
|
||||
var keySize int
|
||||
var hash crypto.Hash
|
||||
|
||||
switch alg {
|
||||
case ES256:
|
||||
keySize = 32
|
||||
hash = crypto.SHA256
|
||||
case ES384:
|
||||
keySize = 48
|
||||
hash = crypto.SHA384
|
||||
case ES512:
|
||||
keySize = 66
|
||||
hash = crypto.SHA512
|
||||
default:
|
||||
return ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
if len(signature) != 2*keySize {
|
||||
return fmt.Errorf("square/go-jose: invalid signature size, have %d bytes, wanted %d", len(signature), 2*keySize)
|
||||
}
|
||||
|
||||
hasher := hash.New()
|
||||
|
||||
// According to documentation, Write() on hash never fails
|
||||
_, _ = hasher.Write(payload)
|
||||
hashed := hasher.Sum(nil)
|
||||
|
||||
r := big.NewInt(0).SetBytes(signature[:keySize])
|
||||
s := big.NewInt(0).SetBytes(signature[keySize:])
|
||||
|
||||
match := ecdsa.Verify(ctx.publicKey, hashed, r, s)
|
||||
if !match {
|
||||
return errors.New("square/go-jose: ecdsa signature failed to verify")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
196
vendor/gopkg.in/square/go-jose.v2/cipher/cbc_hmac.go
generated
vendored
Normal file
196
vendor/gopkg.in/square/go-jose.v2/cipher/cbc_hmac.go
generated
vendored
Normal file
@ -0,0 +1,196 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package josecipher
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/cipher"
|
||||
"crypto/hmac"
|
||||
"crypto/sha256"
|
||||
"crypto/sha512"
|
||||
"crypto/subtle"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"hash"
|
||||
)
|
||||
|
||||
const (
|
||||
nonceBytes = 16
|
||||
)
|
||||
|
||||
// NewCBCHMAC instantiates a new AEAD based on CBC+HMAC.
|
||||
func NewCBCHMAC(key []byte, newBlockCipher func([]byte) (cipher.Block, error)) (cipher.AEAD, error) {
|
||||
keySize := len(key) / 2
|
||||
integrityKey := key[:keySize]
|
||||
encryptionKey := key[keySize:]
|
||||
|
||||
blockCipher, err := newBlockCipher(encryptionKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var hash func() hash.Hash
|
||||
switch keySize {
|
||||
case 16:
|
||||
hash = sha256.New
|
||||
case 24:
|
||||
hash = sha512.New384
|
||||
case 32:
|
||||
hash = sha512.New
|
||||
}
|
||||
|
||||
return &cbcAEAD{
|
||||
hash: hash,
|
||||
blockCipher: blockCipher,
|
||||
authtagBytes: keySize,
|
||||
integrityKey: integrityKey,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// An AEAD based on CBC+HMAC
|
||||
type cbcAEAD struct {
|
||||
hash func() hash.Hash
|
||||
authtagBytes int
|
||||
integrityKey []byte
|
||||
blockCipher cipher.Block
|
||||
}
|
||||
|
||||
func (ctx *cbcAEAD) NonceSize() int {
|
||||
return nonceBytes
|
||||
}
|
||||
|
||||
func (ctx *cbcAEAD) Overhead() int {
|
||||
// Maximum overhead is block size (for padding) plus auth tag length, where
|
||||
// the length of the auth tag is equivalent to the key size.
|
||||
return ctx.blockCipher.BlockSize() + ctx.authtagBytes
|
||||
}
|
||||
|
||||
// Seal encrypts and authenticates the plaintext.
|
||||
func (ctx *cbcAEAD) Seal(dst, nonce, plaintext, data []byte) []byte {
|
||||
// Output buffer -- must take care not to mangle plaintext input.
|
||||
ciphertext := make([]byte, uint64(len(plaintext))+uint64(ctx.Overhead()))[:len(plaintext)]
|
||||
copy(ciphertext, plaintext)
|
||||
ciphertext = padBuffer(ciphertext, ctx.blockCipher.BlockSize())
|
||||
|
||||
cbc := cipher.NewCBCEncrypter(ctx.blockCipher, nonce)
|
||||
|
||||
cbc.CryptBlocks(ciphertext, ciphertext)
|
||||
authtag := ctx.computeAuthTag(data, nonce, ciphertext)
|
||||
|
||||
ret, out := resize(dst, uint64(len(dst))+uint64(len(ciphertext))+uint64(len(authtag)))
|
||||
copy(out, ciphertext)
|
||||
copy(out[len(ciphertext):], authtag)
|
||||
|
||||
return ret
|
||||
}
|
||||
|
||||
// Open decrypts and authenticates the ciphertext.
|
||||
func (ctx *cbcAEAD) Open(dst, nonce, ciphertext, data []byte) ([]byte, error) {
|
||||
if len(ciphertext) < ctx.authtagBytes {
|
||||
return nil, errors.New("square/go-jose: invalid ciphertext (too short)")
|
||||
}
|
||||
|
||||
offset := len(ciphertext) - ctx.authtagBytes
|
||||
expectedTag := ctx.computeAuthTag(data, nonce, ciphertext[:offset])
|
||||
match := subtle.ConstantTimeCompare(expectedTag, ciphertext[offset:])
|
||||
if match != 1 {
|
||||
return nil, errors.New("square/go-jose: invalid ciphertext (auth tag mismatch)")
|
||||
}
|
||||
|
||||
cbc := cipher.NewCBCDecrypter(ctx.blockCipher, nonce)
|
||||
|
||||
// Make copy of ciphertext buffer, don't want to modify in place
|
||||
buffer := append([]byte{}, []byte(ciphertext[:offset])...)
|
||||
|
||||
if len(buffer)%ctx.blockCipher.BlockSize() > 0 {
|
||||
return nil, errors.New("square/go-jose: invalid ciphertext (invalid length)")
|
||||
}
|
||||
|
||||
cbc.CryptBlocks(buffer, buffer)
|
||||
|
||||
// Remove padding
|
||||
plaintext, err := unpadBuffer(buffer, ctx.blockCipher.BlockSize())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ret, out := resize(dst, uint64(len(dst))+uint64(len(plaintext)))
|
||||
copy(out, plaintext)
|
||||
|
||||
return ret, nil
|
||||
}
|
||||
|
||||
// Compute an authentication tag
|
||||
func (ctx *cbcAEAD) computeAuthTag(aad, nonce, ciphertext []byte) []byte {
|
||||
buffer := make([]byte, uint64(len(aad))+uint64(len(nonce))+uint64(len(ciphertext))+8)
|
||||
n := 0
|
||||
n += copy(buffer, aad)
|
||||
n += copy(buffer[n:], nonce)
|
||||
n += copy(buffer[n:], ciphertext)
|
||||
binary.BigEndian.PutUint64(buffer[n:], uint64(len(aad))*8)
|
||||
|
||||
// According to documentation, Write() on hash.Hash never fails.
|
||||
hmac := hmac.New(ctx.hash, ctx.integrityKey)
|
||||
_, _ = hmac.Write(buffer)
|
||||
|
||||
return hmac.Sum(nil)[:ctx.authtagBytes]
|
||||
}
|
||||
|
||||
// resize ensures the the given slice has a capacity of at least n bytes.
|
||||
// If the capacity of the slice is less than n, a new slice is allocated
|
||||
// and the existing data will be copied.
|
||||
func resize(in []byte, n uint64) (head, tail []byte) {
|
||||
if uint64(cap(in)) >= n {
|
||||
head = in[:n]
|
||||
} else {
|
||||
head = make([]byte, n)
|
||||
copy(head, in)
|
||||
}
|
||||
|
||||
tail = head[len(in):]
|
||||
return
|
||||
}
|
||||
|
||||
// Apply padding
|
||||
func padBuffer(buffer []byte, blockSize int) []byte {
|
||||
missing := blockSize - (len(buffer) % blockSize)
|
||||
ret, out := resize(buffer, uint64(len(buffer))+uint64(missing))
|
||||
padding := bytes.Repeat([]byte{byte(missing)}, missing)
|
||||
copy(out, padding)
|
||||
return ret
|
||||
}
|
||||
|
||||
// Remove padding
|
||||
func unpadBuffer(buffer []byte, blockSize int) ([]byte, error) {
|
||||
if len(buffer)%blockSize != 0 {
|
||||
return nil, errors.New("square/go-jose: invalid padding")
|
||||
}
|
||||
|
||||
last := buffer[len(buffer)-1]
|
||||
count := int(last)
|
||||
|
||||
if count == 0 || count > blockSize || count > len(buffer) {
|
||||
return nil, errors.New("square/go-jose: invalid padding")
|
||||
}
|
||||
|
||||
padding := bytes.Repeat([]byte{last}, count)
|
||||
if !bytes.HasSuffix(buffer, padding) {
|
||||
return nil, errors.New("square/go-jose: invalid padding")
|
||||
}
|
||||
|
||||
return buffer[:len(buffer)-count], nil
|
||||
}
|
||||
75
vendor/gopkg.in/square/go-jose.v2/cipher/concat_kdf.go
generated
vendored
Normal file
75
vendor/gopkg.in/square/go-jose.v2/cipher/concat_kdf.go
generated
vendored
Normal file
@ -0,0 +1,75 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package josecipher
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"encoding/binary"
|
||||
"hash"
|
||||
"io"
|
||||
)
|
||||
|
||||
type concatKDF struct {
|
||||
z, info []byte
|
||||
i uint32
|
||||
cache []byte
|
||||
hasher hash.Hash
|
||||
}
|
||||
|
||||
// NewConcatKDF builds a KDF reader based on the given inputs.
|
||||
func NewConcatKDF(hash crypto.Hash, z, algID, ptyUInfo, ptyVInfo, supPubInfo, supPrivInfo []byte) io.Reader {
|
||||
buffer := make([]byte, uint64(len(algID))+uint64(len(ptyUInfo))+uint64(len(ptyVInfo))+uint64(len(supPubInfo))+uint64(len(supPrivInfo)))
|
||||
n := 0
|
||||
n += copy(buffer, algID)
|
||||
n += copy(buffer[n:], ptyUInfo)
|
||||
n += copy(buffer[n:], ptyVInfo)
|
||||
n += copy(buffer[n:], supPubInfo)
|
||||
copy(buffer[n:], supPrivInfo)
|
||||
|
||||
hasher := hash.New()
|
||||
|
||||
return &concatKDF{
|
||||
z: z,
|
||||
info: buffer,
|
||||
hasher: hasher,
|
||||
cache: []byte{},
|
||||
i: 1,
|
||||
}
|
||||
}
|
||||
|
||||
func (ctx *concatKDF) Read(out []byte) (int, error) {
|
||||
copied := copy(out, ctx.cache)
|
||||
ctx.cache = ctx.cache[copied:]
|
||||
|
||||
for copied < len(out) {
|
||||
ctx.hasher.Reset()
|
||||
|
||||
// Write on a hash.Hash never fails
|
||||
_ = binary.Write(ctx.hasher, binary.BigEndian, ctx.i)
|
||||
_, _ = ctx.hasher.Write(ctx.z)
|
||||
_, _ = ctx.hasher.Write(ctx.info)
|
||||
|
||||
hash := ctx.hasher.Sum(nil)
|
||||
chunkCopied := copy(out[copied:], hash)
|
||||
copied += chunkCopied
|
||||
ctx.cache = hash[chunkCopied:]
|
||||
|
||||
ctx.i++
|
||||
}
|
||||
|
||||
return copied, nil
|
||||
}
|
||||
62
vendor/gopkg.in/square/go-jose.v2/cipher/ecdh_es.go
generated
vendored
Normal file
62
vendor/gopkg.in/square/go-jose.v2/cipher/ecdh_es.go
generated
vendored
Normal file
@ -0,0 +1,62 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package josecipher
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/ecdsa"
|
||||
"encoding/binary"
|
||||
)
|
||||
|
||||
// DeriveECDHES derives a shared encryption key using ECDH/ConcatKDF as described in JWE/JWA.
|
||||
// It is an error to call this function with a private/public key that are not on the same
|
||||
// curve. Callers must ensure that the keys are valid before calling this function. Output
|
||||
// size may be at most 1<<16 bytes (64 KiB).
|
||||
func DeriveECDHES(alg string, apuData, apvData []byte, priv *ecdsa.PrivateKey, pub *ecdsa.PublicKey, size int) []byte {
|
||||
if size > 1<<16 {
|
||||
panic("ECDH-ES output size too large, must be less than or equal to 1<<16")
|
||||
}
|
||||
|
||||
// algId, partyUInfo, partyVInfo inputs must be prefixed with the length
|
||||
algID := lengthPrefixed([]byte(alg))
|
||||
ptyUInfo := lengthPrefixed(apuData)
|
||||
ptyVInfo := lengthPrefixed(apvData)
|
||||
|
||||
// suppPubInfo is the encoded length of the output size in bits
|
||||
supPubInfo := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(supPubInfo, uint32(size)*8)
|
||||
|
||||
if !priv.PublicKey.Curve.IsOnCurve(pub.X, pub.Y) {
|
||||
panic("public key not on same curve as private key")
|
||||
}
|
||||
|
||||
z, _ := priv.PublicKey.Curve.ScalarMult(pub.X, pub.Y, priv.D.Bytes())
|
||||
reader := NewConcatKDF(crypto.SHA256, z.Bytes(), algID, ptyUInfo, ptyVInfo, supPubInfo, []byte{})
|
||||
|
||||
key := make([]byte, size)
|
||||
|
||||
// Read on the KDF will never fail
|
||||
_, _ = reader.Read(key)
|
||||
return key
|
||||
}
|
||||
|
||||
func lengthPrefixed(data []byte) []byte {
|
||||
out := make([]byte, len(data)+4)
|
||||
binary.BigEndian.PutUint32(out, uint32(len(data)))
|
||||
copy(out[4:], data)
|
||||
return out
|
||||
}
|
||||
109
vendor/gopkg.in/square/go-jose.v2/cipher/key_wrap.go
generated
vendored
Normal file
109
vendor/gopkg.in/square/go-jose.v2/cipher/key_wrap.go
generated
vendored
Normal file
@ -0,0 +1,109 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package josecipher
|
||||
|
||||
import (
|
||||
"crypto/cipher"
|
||||
"crypto/subtle"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
)
|
||||
|
||||
var defaultIV = []byte{0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6}
|
||||
|
||||
// KeyWrap implements NIST key wrapping; it wraps a content encryption key (cek) with the given block cipher.
|
||||
func KeyWrap(block cipher.Block, cek []byte) ([]byte, error) {
|
||||
if len(cek)%8 != 0 {
|
||||
return nil, errors.New("square/go-jose: key wrap input must be 8 byte blocks")
|
||||
}
|
||||
|
||||
n := len(cek) / 8
|
||||
r := make([][]byte, n)
|
||||
|
||||
for i := range r {
|
||||
r[i] = make([]byte, 8)
|
||||
copy(r[i], cek[i*8:])
|
||||
}
|
||||
|
||||
buffer := make([]byte, 16)
|
||||
tBytes := make([]byte, 8)
|
||||
copy(buffer, defaultIV)
|
||||
|
||||
for t := 0; t < 6*n; t++ {
|
||||
copy(buffer[8:], r[t%n])
|
||||
|
||||
block.Encrypt(buffer, buffer)
|
||||
|
||||
binary.BigEndian.PutUint64(tBytes, uint64(t+1))
|
||||
|
||||
for i := 0; i < 8; i++ {
|
||||
buffer[i] = buffer[i] ^ tBytes[i]
|
||||
}
|
||||
copy(r[t%n], buffer[8:])
|
||||
}
|
||||
|
||||
out := make([]byte, (n+1)*8)
|
||||
copy(out, buffer[:8])
|
||||
for i := range r {
|
||||
copy(out[(i+1)*8:], r[i])
|
||||
}
|
||||
|
||||
return out, nil
|
||||
}
|
||||
|
||||
// KeyUnwrap implements NIST key unwrapping; it unwraps a content encryption key (cek) with the given block cipher.
|
||||
func KeyUnwrap(block cipher.Block, ciphertext []byte) ([]byte, error) {
|
||||
if len(ciphertext)%8 != 0 {
|
||||
return nil, errors.New("square/go-jose: key wrap input must be 8 byte blocks")
|
||||
}
|
||||
|
||||
n := (len(ciphertext) / 8) - 1
|
||||
r := make([][]byte, n)
|
||||
|
||||
for i := range r {
|
||||
r[i] = make([]byte, 8)
|
||||
copy(r[i], ciphertext[(i+1)*8:])
|
||||
}
|
||||
|
||||
buffer := make([]byte, 16)
|
||||
tBytes := make([]byte, 8)
|
||||
copy(buffer[:8], ciphertext[:8])
|
||||
|
||||
for t := 6*n - 1; t >= 0; t-- {
|
||||
binary.BigEndian.PutUint64(tBytes, uint64(t+1))
|
||||
|
||||
for i := 0; i < 8; i++ {
|
||||
buffer[i] = buffer[i] ^ tBytes[i]
|
||||
}
|
||||
copy(buffer[8:], r[t%n])
|
||||
|
||||
block.Decrypt(buffer, buffer)
|
||||
|
||||
copy(r[t%n], buffer[8:])
|
||||
}
|
||||
|
||||
if subtle.ConstantTimeCompare(buffer[:8], defaultIV) == 0 {
|
||||
return nil, errors.New("square/go-jose: failed to unwrap key")
|
||||
}
|
||||
|
||||
out := make([]byte, n*8)
|
||||
for i := range r {
|
||||
copy(out[i*8:], r[i])
|
||||
}
|
||||
|
||||
return out, nil
|
||||
}
|
||||
535
vendor/gopkg.in/square/go-jose.v2/crypter.go
generated
vendored
Normal file
535
vendor/gopkg.in/square/go-jose.v2/crypter.go
generated
vendored
Normal file
@ -0,0 +1,535 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"crypto/ecdsa"
|
||||
"crypto/rsa"
|
||||
"errors"
|
||||
"fmt"
|
||||
"reflect"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// Encrypter represents an encrypter which produces an encrypted JWE object.
|
||||
type Encrypter interface {
|
||||
Encrypt(plaintext []byte) (*JSONWebEncryption, error)
|
||||
EncryptWithAuthData(plaintext []byte, aad []byte) (*JSONWebEncryption, error)
|
||||
Options() EncrypterOptions
|
||||
}
|
||||
|
||||
// A generic content cipher
|
||||
type contentCipher interface {
|
||||
keySize() int
|
||||
encrypt(cek []byte, aad, plaintext []byte) (*aeadParts, error)
|
||||
decrypt(cek []byte, aad []byte, parts *aeadParts) ([]byte, error)
|
||||
}
|
||||
|
||||
// A key generator (for generating/getting a CEK)
|
||||
type keyGenerator interface {
|
||||
keySize() int
|
||||
genKey() ([]byte, rawHeader, error)
|
||||
}
|
||||
|
||||
// A generic key encrypter
|
||||
type keyEncrypter interface {
|
||||
encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) // Encrypt a key
|
||||
}
|
||||
|
||||
// A generic key decrypter
|
||||
type keyDecrypter interface {
|
||||
decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) // Decrypt a key
|
||||
}
|
||||
|
||||
// A generic encrypter based on the given key encrypter and content cipher.
|
||||
type genericEncrypter struct {
|
||||
contentAlg ContentEncryption
|
||||
compressionAlg CompressionAlgorithm
|
||||
cipher contentCipher
|
||||
recipients []recipientKeyInfo
|
||||
keyGenerator keyGenerator
|
||||
extraHeaders map[HeaderKey]interface{}
|
||||
}
|
||||
|
||||
type recipientKeyInfo struct {
|
||||
keyID string
|
||||
keyAlg KeyAlgorithm
|
||||
keyEncrypter keyEncrypter
|
||||
}
|
||||
|
||||
// EncrypterOptions represents options that can be set on new encrypters.
|
||||
type EncrypterOptions struct {
|
||||
Compression CompressionAlgorithm
|
||||
|
||||
// Optional map of additional keys to be inserted into the protected header
|
||||
// of a JWS object. Some specifications which make use of JWS like to insert
|
||||
// additional values here. All values must be JSON-serializable.
|
||||
ExtraHeaders map[HeaderKey]interface{}
|
||||
}
|
||||
|
||||
// WithHeader adds an arbitrary value to the ExtraHeaders map, initializing it
|
||||
// if necessary. It returns itself and so can be used in a fluent style.
|
||||
func (eo *EncrypterOptions) WithHeader(k HeaderKey, v interface{}) *EncrypterOptions {
|
||||
if eo.ExtraHeaders == nil {
|
||||
eo.ExtraHeaders = map[HeaderKey]interface{}{}
|
||||
}
|
||||
eo.ExtraHeaders[k] = v
|
||||
return eo
|
||||
}
|
||||
|
||||
// WithContentType adds a content type ("cty") header and returns the updated
|
||||
// EncrypterOptions.
|
||||
func (eo *EncrypterOptions) WithContentType(contentType ContentType) *EncrypterOptions {
|
||||
return eo.WithHeader(HeaderContentType, contentType)
|
||||
}
|
||||
|
||||
// WithType adds a type ("typ") header and returns the updated EncrypterOptions.
|
||||
func (eo *EncrypterOptions) WithType(typ ContentType) *EncrypterOptions {
|
||||
return eo.WithHeader(HeaderType, typ)
|
||||
}
|
||||
|
||||
// Recipient represents an algorithm/key to encrypt messages to.
|
||||
//
|
||||
// PBES2Count and PBES2Salt correspond with the "p2c" and "p2s" headers used
|
||||
// on the password-based encryption algorithms PBES2-HS256+A128KW,
|
||||
// PBES2-HS384+A192KW, and PBES2-HS512+A256KW. If they are not provided a safe
|
||||
// default of 100000 will be used for the count and a 128-bit random salt will
|
||||
// be generated.
|
||||
type Recipient struct {
|
||||
Algorithm KeyAlgorithm
|
||||
Key interface{}
|
||||
KeyID string
|
||||
PBES2Count int
|
||||
PBES2Salt []byte
|
||||
}
|
||||
|
||||
// NewEncrypter creates an appropriate encrypter based on the key type
|
||||
func NewEncrypter(enc ContentEncryption, rcpt Recipient, opts *EncrypterOptions) (Encrypter, error) {
|
||||
encrypter := &genericEncrypter{
|
||||
contentAlg: enc,
|
||||
recipients: []recipientKeyInfo{},
|
||||
cipher: getContentCipher(enc),
|
||||
}
|
||||
if opts != nil {
|
||||
encrypter.compressionAlg = opts.Compression
|
||||
encrypter.extraHeaders = opts.ExtraHeaders
|
||||
}
|
||||
|
||||
if encrypter.cipher == nil {
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
var keyID string
|
||||
var rawKey interface{}
|
||||
switch encryptionKey := rcpt.Key.(type) {
|
||||
case JSONWebKey:
|
||||
keyID, rawKey = encryptionKey.KeyID, encryptionKey.Key
|
||||
case *JSONWebKey:
|
||||
keyID, rawKey = encryptionKey.KeyID, encryptionKey.Key
|
||||
default:
|
||||
rawKey = encryptionKey
|
||||
}
|
||||
|
||||
switch rcpt.Algorithm {
|
||||
case DIRECT:
|
||||
// Direct encryption mode must be treated differently
|
||||
if reflect.TypeOf(rawKey) != reflect.TypeOf([]byte{}) {
|
||||
return nil, ErrUnsupportedKeyType
|
||||
}
|
||||
if encrypter.cipher.keySize() != len(rawKey.([]byte)) {
|
||||
return nil, ErrInvalidKeySize
|
||||
}
|
||||
encrypter.keyGenerator = staticKeyGenerator{
|
||||
key: rawKey.([]byte),
|
||||
}
|
||||
recipientInfo, _ := newSymmetricRecipient(rcpt.Algorithm, rawKey.([]byte))
|
||||
recipientInfo.keyID = keyID
|
||||
if rcpt.KeyID != "" {
|
||||
recipientInfo.keyID = rcpt.KeyID
|
||||
}
|
||||
encrypter.recipients = []recipientKeyInfo{recipientInfo}
|
||||
return encrypter, nil
|
||||
case ECDH_ES:
|
||||
// ECDH-ES (w/o key wrapping) is similar to DIRECT mode
|
||||
typeOf := reflect.TypeOf(rawKey)
|
||||
if typeOf != reflect.TypeOf(&ecdsa.PublicKey{}) {
|
||||
return nil, ErrUnsupportedKeyType
|
||||
}
|
||||
encrypter.keyGenerator = ecKeyGenerator{
|
||||
size: encrypter.cipher.keySize(),
|
||||
algID: string(enc),
|
||||
publicKey: rawKey.(*ecdsa.PublicKey),
|
||||
}
|
||||
recipientInfo, _ := newECDHRecipient(rcpt.Algorithm, rawKey.(*ecdsa.PublicKey))
|
||||
recipientInfo.keyID = keyID
|
||||
if rcpt.KeyID != "" {
|
||||
recipientInfo.keyID = rcpt.KeyID
|
||||
}
|
||||
encrypter.recipients = []recipientKeyInfo{recipientInfo}
|
||||
return encrypter, nil
|
||||
default:
|
||||
// Can just add a standard recipient
|
||||
encrypter.keyGenerator = randomKeyGenerator{
|
||||
size: encrypter.cipher.keySize(),
|
||||
}
|
||||
err := encrypter.addRecipient(rcpt)
|
||||
return encrypter, err
|
||||
}
|
||||
}
|
||||
|
||||
// NewMultiEncrypter creates a multi-encrypter based on the given parameters
|
||||
func NewMultiEncrypter(enc ContentEncryption, rcpts []Recipient, opts *EncrypterOptions) (Encrypter, error) {
|
||||
cipher := getContentCipher(enc)
|
||||
|
||||
if cipher == nil {
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
if rcpts == nil || len(rcpts) == 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: recipients is nil or empty")
|
||||
}
|
||||
|
||||
encrypter := &genericEncrypter{
|
||||
contentAlg: enc,
|
||||
recipients: []recipientKeyInfo{},
|
||||
cipher: cipher,
|
||||
keyGenerator: randomKeyGenerator{
|
||||
size: cipher.keySize(),
|
||||
},
|
||||
}
|
||||
|
||||
if opts != nil {
|
||||
encrypter.compressionAlg = opts.Compression
|
||||
}
|
||||
|
||||
for _, recipient := range rcpts {
|
||||
err := encrypter.addRecipient(recipient)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return encrypter, nil
|
||||
}
|
||||
|
||||
func (ctx *genericEncrypter) addRecipient(recipient Recipient) (err error) {
|
||||
var recipientInfo recipientKeyInfo
|
||||
|
||||
switch recipient.Algorithm {
|
||||
case DIRECT, ECDH_ES:
|
||||
return fmt.Errorf("square/go-jose: key algorithm '%s' not supported in multi-recipient mode", recipient.Algorithm)
|
||||
}
|
||||
|
||||
recipientInfo, err = makeJWERecipient(recipient.Algorithm, recipient.Key)
|
||||
if recipient.KeyID != "" {
|
||||
recipientInfo.keyID = recipient.KeyID
|
||||
}
|
||||
|
||||
switch recipient.Algorithm {
|
||||
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
|
||||
if sr, ok := recipientInfo.keyEncrypter.(*symmetricKeyCipher); ok {
|
||||
sr.p2c = recipient.PBES2Count
|
||||
sr.p2s = recipient.PBES2Salt
|
||||
}
|
||||
}
|
||||
|
||||
if err == nil {
|
||||
ctx.recipients = append(ctx.recipients, recipientInfo)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
func makeJWERecipient(alg KeyAlgorithm, encryptionKey interface{}) (recipientKeyInfo, error) {
|
||||
switch encryptionKey := encryptionKey.(type) {
|
||||
case *rsa.PublicKey:
|
||||
return newRSARecipient(alg, encryptionKey)
|
||||
case *ecdsa.PublicKey:
|
||||
return newECDHRecipient(alg, encryptionKey)
|
||||
case []byte:
|
||||
return newSymmetricRecipient(alg, encryptionKey)
|
||||
case string:
|
||||
return newSymmetricRecipient(alg, []byte(encryptionKey))
|
||||
case *JSONWebKey:
|
||||
recipient, err := makeJWERecipient(alg, encryptionKey.Key)
|
||||
recipient.keyID = encryptionKey.KeyID
|
||||
return recipient, err
|
||||
default:
|
||||
return recipientKeyInfo{}, ErrUnsupportedKeyType
|
||||
}
|
||||
}
|
||||
|
||||
// newDecrypter creates an appropriate decrypter based on the key type
|
||||
func newDecrypter(decryptionKey interface{}) (keyDecrypter, error) {
|
||||
switch decryptionKey := decryptionKey.(type) {
|
||||
case *rsa.PrivateKey:
|
||||
return &rsaDecrypterSigner{
|
||||
privateKey: decryptionKey,
|
||||
}, nil
|
||||
case *ecdsa.PrivateKey:
|
||||
return &ecDecrypterSigner{
|
||||
privateKey: decryptionKey,
|
||||
}, nil
|
||||
case []byte:
|
||||
return &symmetricKeyCipher{
|
||||
key: decryptionKey,
|
||||
}, nil
|
||||
case string:
|
||||
return &symmetricKeyCipher{
|
||||
key: []byte(decryptionKey),
|
||||
}, nil
|
||||
case JSONWebKey:
|
||||
return newDecrypter(decryptionKey.Key)
|
||||
case *JSONWebKey:
|
||||
return newDecrypter(decryptionKey.Key)
|
||||
default:
|
||||
return nil, ErrUnsupportedKeyType
|
||||
}
|
||||
}
|
||||
|
||||
// Implementation of encrypt method producing a JWE object.
|
||||
func (ctx *genericEncrypter) Encrypt(plaintext []byte) (*JSONWebEncryption, error) {
|
||||
return ctx.EncryptWithAuthData(plaintext, nil)
|
||||
}
|
||||
|
||||
// Implementation of encrypt method producing a JWE object.
|
||||
func (ctx *genericEncrypter) EncryptWithAuthData(plaintext, aad []byte) (*JSONWebEncryption, error) {
|
||||
obj := &JSONWebEncryption{}
|
||||
obj.aad = aad
|
||||
|
||||
obj.protected = &rawHeader{}
|
||||
err := obj.protected.set(headerEncryption, ctx.contentAlg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
obj.recipients = make([]recipientInfo, len(ctx.recipients))
|
||||
|
||||
if len(ctx.recipients) == 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: no recipients to encrypt to")
|
||||
}
|
||||
|
||||
cek, headers, err := ctx.keyGenerator.genKey()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
obj.protected.merge(&headers)
|
||||
|
||||
for i, info := range ctx.recipients {
|
||||
recipient, err := info.keyEncrypter.encryptKey(cek, info.keyAlg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = recipient.header.set(headerAlgorithm, info.keyAlg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if info.keyID != "" {
|
||||
err = recipient.header.set(headerKeyID, info.keyID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
obj.recipients[i] = recipient
|
||||
}
|
||||
|
||||
if len(ctx.recipients) == 1 {
|
||||
// Move per-recipient headers into main protected header if there's
|
||||
// only a single recipient.
|
||||
obj.protected.merge(obj.recipients[0].header)
|
||||
obj.recipients[0].header = nil
|
||||
}
|
||||
|
||||
if ctx.compressionAlg != NONE {
|
||||
plaintext, err = compress(ctx.compressionAlg, plaintext)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = obj.protected.set(headerCompression, ctx.compressionAlg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
for k, v := range ctx.extraHeaders {
|
||||
b, err := json.Marshal(v)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
(*obj.protected)[k] = makeRawMessage(b)
|
||||
}
|
||||
|
||||
authData := obj.computeAuthData()
|
||||
parts, err := ctx.cipher.encrypt(cek, authData, plaintext)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
obj.iv = parts.iv
|
||||
obj.ciphertext = parts.ciphertext
|
||||
obj.tag = parts.tag
|
||||
|
||||
return obj, nil
|
||||
}
|
||||
|
||||
func (ctx *genericEncrypter) Options() EncrypterOptions {
|
||||
return EncrypterOptions{
|
||||
Compression: ctx.compressionAlg,
|
||||
ExtraHeaders: ctx.extraHeaders,
|
||||
}
|
||||
}
|
||||
|
||||
// Decrypt and validate the object and return the plaintext. Note that this
|
||||
// function does not support multi-recipient, if you desire multi-recipient
|
||||
// decryption use DecryptMulti instead.
|
||||
func (obj JSONWebEncryption) Decrypt(decryptionKey interface{}) ([]byte, error) {
|
||||
headers := obj.mergedHeaders(nil)
|
||||
|
||||
if len(obj.recipients) > 1 {
|
||||
return nil, errors.New("square/go-jose: too many recipients in payload; expecting only one")
|
||||
}
|
||||
|
||||
critical, err := headers.getCritical()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid crit header")
|
||||
}
|
||||
|
||||
if len(critical) > 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: unsupported crit header")
|
||||
}
|
||||
|
||||
decrypter, err := newDecrypter(decryptionKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
cipher := getContentCipher(headers.getEncryption())
|
||||
if cipher == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: unsupported enc value '%s'", string(headers.getEncryption()))
|
||||
}
|
||||
|
||||
generator := randomKeyGenerator{
|
||||
size: cipher.keySize(),
|
||||
}
|
||||
|
||||
parts := &aeadParts{
|
||||
iv: obj.iv,
|
||||
ciphertext: obj.ciphertext,
|
||||
tag: obj.tag,
|
||||
}
|
||||
|
||||
authData := obj.computeAuthData()
|
||||
|
||||
var plaintext []byte
|
||||
recipient := obj.recipients[0]
|
||||
recipientHeaders := obj.mergedHeaders(&recipient)
|
||||
|
||||
cek, err := decrypter.decryptKey(recipientHeaders, &recipient, generator)
|
||||
if err == nil {
|
||||
// Found a valid CEK -- let's try to decrypt.
|
||||
plaintext, err = cipher.decrypt(cek, authData, parts)
|
||||
}
|
||||
|
||||
if plaintext == nil {
|
||||
return nil, ErrCryptoFailure
|
||||
}
|
||||
|
||||
// The "zip" header parameter may only be present in the protected header.
|
||||
if comp := obj.protected.getCompression(); comp != "" {
|
||||
plaintext, err = decompress(comp, plaintext)
|
||||
}
|
||||
|
||||
return plaintext, err
|
||||
}
|
||||
|
||||
// DecryptMulti decrypts and validates the object and returns the plaintexts,
|
||||
// with support for multiple recipients. It returns the index of the recipient
|
||||
// for which the decryption was successful, the merged headers for that recipient,
|
||||
// and the plaintext.
|
||||
func (obj JSONWebEncryption) DecryptMulti(decryptionKey interface{}) (int, Header, []byte, error) {
|
||||
globalHeaders := obj.mergedHeaders(nil)
|
||||
|
||||
critical, err := globalHeaders.getCritical()
|
||||
if err != nil {
|
||||
return -1, Header{}, nil, fmt.Errorf("square/go-jose: invalid crit header")
|
||||
}
|
||||
|
||||
if len(critical) > 0 {
|
||||
return -1, Header{}, nil, fmt.Errorf("square/go-jose: unsupported crit header")
|
||||
}
|
||||
|
||||
decrypter, err := newDecrypter(decryptionKey)
|
||||
if err != nil {
|
||||
return -1, Header{}, nil, err
|
||||
}
|
||||
|
||||
encryption := globalHeaders.getEncryption()
|
||||
cipher := getContentCipher(encryption)
|
||||
if cipher == nil {
|
||||
return -1, Header{}, nil, fmt.Errorf("square/go-jose: unsupported enc value '%s'", string(encryption))
|
||||
}
|
||||
|
||||
generator := randomKeyGenerator{
|
||||
size: cipher.keySize(),
|
||||
}
|
||||
|
||||
parts := &aeadParts{
|
||||
iv: obj.iv,
|
||||
ciphertext: obj.ciphertext,
|
||||
tag: obj.tag,
|
||||
}
|
||||
|
||||
authData := obj.computeAuthData()
|
||||
|
||||
index := -1
|
||||
var plaintext []byte
|
||||
var headers rawHeader
|
||||
|
||||
for i, recipient := range obj.recipients {
|
||||
recipientHeaders := obj.mergedHeaders(&recipient)
|
||||
|
||||
cek, err := decrypter.decryptKey(recipientHeaders, &recipient, generator)
|
||||
if err == nil {
|
||||
// Found a valid CEK -- let's try to decrypt.
|
||||
plaintext, err = cipher.decrypt(cek, authData, parts)
|
||||
if err == nil {
|
||||
index = i
|
||||
headers = recipientHeaders
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if plaintext == nil || err != nil {
|
||||
return -1, Header{}, nil, ErrCryptoFailure
|
||||
}
|
||||
|
||||
// The "zip" header parameter may only be present in the protected header.
|
||||
if comp := obj.protected.getCompression(); comp != "" {
|
||||
plaintext, err = decompress(comp, plaintext)
|
||||
}
|
||||
|
||||
sanitized, err := headers.sanitized()
|
||||
if err != nil {
|
||||
return -1, Header{}, nil, fmt.Errorf("square/go-jose: failed to sanitize header: %v", err)
|
||||
}
|
||||
|
||||
return index, sanitized, plaintext, err
|
||||
}
|
||||
27
vendor/gopkg.in/square/go-jose.v2/doc.go
generated
vendored
Normal file
27
vendor/gopkg.in/square/go-jose.v2/doc.go
generated
vendored
Normal file
@ -0,0 +1,27 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
Package jose aims to provide an implementation of the Javascript Object Signing
|
||||
and Encryption set of standards. It implements encryption and signing based on
|
||||
the JSON Web Encryption and JSON Web Signature standards, with optional JSON
|
||||
Web Token support available in a sub-package. The library supports both the
|
||||
compact and full serialization formats, and has optional support for multiple
|
||||
recipients.
|
||||
|
||||
*/
|
||||
package jose
|
||||
179
vendor/gopkg.in/square/go-jose.v2/encoding.go
generated
vendored
Normal file
179
vendor/gopkg.in/square/go-jose.v2/encoding.go
generated
vendored
Normal file
@ -0,0 +1,179 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"compress/flate"
|
||||
"encoding/base64"
|
||||
"encoding/binary"
|
||||
"io"
|
||||
"math/big"
|
||||
"regexp"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
var stripWhitespaceRegex = regexp.MustCompile("\\s")
|
||||
|
||||
// Helper function to serialize known-good objects.
|
||||
// Precondition: value is not a nil pointer.
|
||||
func mustSerializeJSON(value interface{}) []byte {
|
||||
out, err := json.Marshal(value)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
// We never want to serialize the top-level value "null," since it's not a
|
||||
// valid JOSE message. But if a caller passes in a nil pointer to this method,
|
||||
// MarshalJSON will happily serialize it as the top-level value "null". If
|
||||
// that value is then embedded in another operation, for instance by being
|
||||
// base64-encoded and fed as input to a signing algorithm
|
||||
// (https://github.com/square/go-jose/issues/22), the result will be
|
||||
// incorrect. Because this method is intended for known-good objects, and a nil
|
||||
// pointer is not a known-good object, we are free to panic in this case.
|
||||
// Note: It's not possible to directly check whether the data pointed at by an
|
||||
// interface is a nil pointer, so we do this hacky workaround.
|
||||
// https://groups.google.com/forum/#!topic/golang-nuts/wnH302gBa4I
|
||||
if string(out) == "null" {
|
||||
panic("Tried to serialize a nil pointer.")
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
// Strip all newlines and whitespace
|
||||
func stripWhitespace(data string) string {
|
||||
return stripWhitespaceRegex.ReplaceAllString(data, "")
|
||||
}
|
||||
|
||||
// Perform compression based on algorithm
|
||||
func compress(algorithm CompressionAlgorithm, input []byte) ([]byte, error) {
|
||||
switch algorithm {
|
||||
case DEFLATE:
|
||||
return deflate(input)
|
||||
default:
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
}
|
||||
|
||||
// Perform decompression based on algorithm
|
||||
func decompress(algorithm CompressionAlgorithm, input []byte) ([]byte, error) {
|
||||
switch algorithm {
|
||||
case DEFLATE:
|
||||
return inflate(input)
|
||||
default:
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
}
|
||||
|
||||
// Compress with DEFLATE
|
||||
func deflate(input []byte) ([]byte, error) {
|
||||
output := new(bytes.Buffer)
|
||||
|
||||
// Writing to byte buffer, err is always nil
|
||||
writer, _ := flate.NewWriter(output, 1)
|
||||
_, _ = io.Copy(writer, bytes.NewBuffer(input))
|
||||
|
||||
err := writer.Close()
|
||||
return output.Bytes(), err
|
||||
}
|
||||
|
||||
// Decompress with DEFLATE
|
||||
func inflate(input []byte) ([]byte, error) {
|
||||
output := new(bytes.Buffer)
|
||||
reader := flate.NewReader(bytes.NewBuffer(input))
|
||||
|
||||
_, err := io.Copy(output, reader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = reader.Close()
|
||||
return output.Bytes(), err
|
||||
}
|
||||
|
||||
// byteBuffer represents a slice of bytes that can be serialized to url-safe base64.
|
||||
type byteBuffer struct {
|
||||
data []byte
|
||||
}
|
||||
|
||||
func newBuffer(data []byte) *byteBuffer {
|
||||
if data == nil {
|
||||
return nil
|
||||
}
|
||||
return &byteBuffer{
|
||||
data: data,
|
||||
}
|
||||
}
|
||||
|
||||
func newFixedSizeBuffer(data []byte, length int) *byteBuffer {
|
||||
if len(data) > length {
|
||||
panic("square/go-jose: invalid call to newFixedSizeBuffer (len(data) > length)")
|
||||
}
|
||||
pad := make([]byte, length-len(data))
|
||||
return newBuffer(append(pad, data...))
|
||||
}
|
||||
|
||||
func newBufferFromInt(num uint64) *byteBuffer {
|
||||
data := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(data, num)
|
||||
return newBuffer(bytes.TrimLeft(data, "\x00"))
|
||||
}
|
||||
|
||||
func (b *byteBuffer) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal(b.base64())
|
||||
}
|
||||
|
||||
func (b *byteBuffer) UnmarshalJSON(data []byte) error {
|
||||
var encoded string
|
||||
err := json.Unmarshal(data, &encoded)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if encoded == "" {
|
||||
return nil
|
||||
}
|
||||
|
||||
decoded, err := base64.RawURLEncoding.DecodeString(encoded)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
*b = *newBuffer(decoded)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (b *byteBuffer) base64() string {
|
||||
return base64.RawURLEncoding.EncodeToString(b.data)
|
||||
}
|
||||
|
||||
func (b *byteBuffer) bytes() []byte {
|
||||
// Handling nil here allows us to transparently handle nil slices when serializing.
|
||||
if b == nil {
|
||||
return nil
|
||||
}
|
||||
return b.data
|
||||
}
|
||||
|
||||
func (b byteBuffer) bigInt() *big.Int {
|
||||
return new(big.Int).SetBytes(b.data)
|
||||
}
|
||||
|
||||
func (b byteBuffer) toInt() int {
|
||||
return int(b.bigInt().Int64())
|
||||
}
|
||||
27
vendor/gopkg.in/square/go-jose.v2/json/LICENSE
generated
vendored
Normal file
27
vendor/gopkg.in/square/go-jose.v2/json/LICENSE
generated
vendored
Normal file
@ -0,0 +1,27 @@
|
||||
Copyright (c) 2012 The Go Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
13
vendor/gopkg.in/square/go-jose.v2/json/README.md
generated
vendored
Normal file
13
vendor/gopkg.in/square/go-jose.v2/json/README.md
generated
vendored
Normal file
@ -0,0 +1,13 @@
|
||||
# Safe JSON
|
||||
|
||||
This repository contains a fork of the `encoding/json` package from Go 1.6.
|
||||
|
||||
The following changes were made:
|
||||
|
||||
* Object deserialization uses case-sensitive member name matching instead of
|
||||
[case-insensitive matching](https://www.ietf.org/mail-archive/web/json/current/msg03763.html).
|
||||
This is to avoid differences in the interpretation of JOSE messages between
|
||||
go-jose and libraries written in other languages.
|
||||
* When deserializing a JSON object, we check for duplicate keys and reject the
|
||||
input whenever we detect a duplicate. Rather than trying to work with malformed
|
||||
data, we prefer to reject it right away.
|
||||
1183
vendor/gopkg.in/square/go-jose.v2/json/decode.go
generated
vendored
Normal file
1183
vendor/gopkg.in/square/go-jose.v2/json/decode.go
generated
vendored
Normal file
File diff suppressed because it is too large
Load Diff
1197
vendor/gopkg.in/square/go-jose.v2/json/encode.go
generated
vendored
Normal file
1197
vendor/gopkg.in/square/go-jose.v2/json/encode.go
generated
vendored
Normal file
File diff suppressed because it is too large
Load Diff
141
vendor/gopkg.in/square/go-jose.v2/json/indent.go
generated
vendored
Normal file
141
vendor/gopkg.in/square/go-jose.v2/json/indent.go
generated
vendored
Normal file
@ -0,0 +1,141 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package json
|
||||
|
||||
import "bytes"
|
||||
|
||||
// Compact appends to dst the JSON-encoded src with
|
||||
// insignificant space characters elided.
|
||||
func Compact(dst *bytes.Buffer, src []byte) error {
|
||||
return compact(dst, src, false)
|
||||
}
|
||||
|
||||
func compact(dst *bytes.Buffer, src []byte, escape bool) error {
|
||||
origLen := dst.Len()
|
||||
var scan scanner
|
||||
scan.reset()
|
||||
start := 0
|
||||
for i, c := range src {
|
||||
if escape && (c == '<' || c == '>' || c == '&') {
|
||||
if start < i {
|
||||
dst.Write(src[start:i])
|
||||
}
|
||||
dst.WriteString(`\u00`)
|
||||
dst.WriteByte(hex[c>>4])
|
||||
dst.WriteByte(hex[c&0xF])
|
||||
start = i + 1
|
||||
}
|
||||
// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
|
||||
if c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
|
||||
if start < i {
|
||||
dst.Write(src[start:i])
|
||||
}
|
||||
dst.WriteString(`\u202`)
|
||||
dst.WriteByte(hex[src[i+2]&0xF])
|
||||
start = i + 3
|
||||
}
|
||||
v := scan.step(&scan, c)
|
||||
if v >= scanSkipSpace {
|
||||
if v == scanError {
|
||||
break
|
||||
}
|
||||
if start < i {
|
||||
dst.Write(src[start:i])
|
||||
}
|
||||
start = i + 1
|
||||
}
|
||||
}
|
||||
if scan.eof() == scanError {
|
||||
dst.Truncate(origLen)
|
||||
return scan.err
|
||||
}
|
||||
if start < len(src) {
|
||||
dst.Write(src[start:])
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func newline(dst *bytes.Buffer, prefix, indent string, depth int) {
|
||||
dst.WriteByte('\n')
|
||||
dst.WriteString(prefix)
|
||||
for i := 0; i < depth; i++ {
|
||||
dst.WriteString(indent)
|
||||
}
|
||||
}
|
||||
|
||||
// Indent appends to dst an indented form of the JSON-encoded src.
|
||||
// Each element in a JSON object or array begins on a new,
|
||||
// indented line beginning with prefix followed by one or more
|
||||
// copies of indent according to the indentation nesting.
|
||||
// The data appended to dst does not begin with the prefix nor
|
||||
// any indentation, to make it easier to embed inside other formatted JSON data.
|
||||
// Although leading space characters (space, tab, carriage return, newline)
|
||||
// at the beginning of src are dropped, trailing space characters
|
||||
// at the end of src are preserved and copied to dst.
|
||||
// For example, if src has no trailing spaces, neither will dst;
|
||||
// if src ends in a trailing newline, so will dst.
|
||||
func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
|
||||
origLen := dst.Len()
|
||||
var scan scanner
|
||||
scan.reset()
|
||||
needIndent := false
|
||||
depth := 0
|
||||
for _, c := range src {
|
||||
scan.bytes++
|
||||
v := scan.step(&scan, c)
|
||||
if v == scanSkipSpace {
|
||||
continue
|
||||
}
|
||||
if v == scanError {
|
||||
break
|
||||
}
|
||||
if needIndent && v != scanEndObject && v != scanEndArray {
|
||||
needIndent = false
|
||||
depth++
|
||||
newline(dst, prefix, indent, depth)
|
||||
}
|
||||
|
||||
// Emit semantically uninteresting bytes
|
||||
// (in particular, punctuation in strings) unmodified.
|
||||
if v == scanContinue {
|
||||
dst.WriteByte(c)
|
||||
continue
|
||||
}
|
||||
|
||||
// Add spacing around real punctuation.
|
||||
switch c {
|
||||
case '{', '[':
|
||||
// delay indent so that empty object and array are formatted as {} and [].
|
||||
needIndent = true
|
||||
dst.WriteByte(c)
|
||||
|
||||
case ',':
|
||||
dst.WriteByte(c)
|
||||
newline(dst, prefix, indent, depth)
|
||||
|
||||
case ':':
|
||||
dst.WriteByte(c)
|
||||
dst.WriteByte(' ')
|
||||
|
||||
case '}', ']':
|
||||
if needIndent {
|
||||
// suppress indent in empty object/array
|
||||
needIndent = false
|
||||
} else {
|
||||
depth--
|
||||
newline(dst, prefix, indent, depth)
|
||||
}
|
||||
dst.WriteByte(c)
|
||||
|
||||
default:
|
||||
dst.WriteByte(c)
|
||||
}
|
||||
}
|
||||
if scan.eof() == scanError {
|
||||
dst.Truncate(origLen)
|
||||
return scan.err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
623
vendor/gopkg.in/square/go-jose.v2/json/scanner.go
generated
vendored
Normal file
623
vendor/gopkg.in/square/go-jose.v2/json/scanner.go
generated
vendored
Normal file
@ -0,0 +1,623 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package json
|
||||
|
||||
// JSON value parser state machine.
|
||||
// Just about at the limit of what is reasonable to write by hand.
|
||||
// Some parts are a bit tedious, but overall it nicely factors out the
|
||||
// otherwise common code from the multiple scanning functions
|
||||
// in this package (Compact, Indent, checkValid, nextValue, etc).
|
||||
//
|
||||
// This file starts with two simple examples using the scanner
|
||||
// before diving into the scanner itself.
|
||||
|
||||
import "strconv"
|
||||
|
||||
// checkValid verifies that data is valid JSON-encoded data.
|
||||
// scan is passed in for use by checkValid to avoid an allocation.
|
||||
func checkValid(data []byte, scan *scanner) error {
|
||||
scan.reset()
|
||||
for _, c := range data {
|
||||
scan.bytes++
|
||||
if scan.step(scan, c) == scanError {
|
||||
return scan.err
|
||||
}
|
||||
}
|
||||
if scan.eof() == scanError {
|
||||
return scan.err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// nextValue splits data after the next whole JSON value,
|
||||
// returning that value and the bytes that follow it as separate slices.
|
||||
// scan is passed in for use by nextValue to avoid an allocation.
|
||||
func nextValue(data []byte, scan *scanner) (value, rest []byte, err error) {
|
||||
scan.reset()
|
||||
for i, c := range data {
|
||||
v := scan.step(scan, c)
|
||||
if v >= scanEndObject {
|
||||
switch v {
|
||||
// probe the scanner with a space to determine whether we will
|
||||
// get scanEnd on the next character. Otherwise, if the next character
|
||||
// is not a space, scanEndTop allocates a needless error.
|
||||
case scanEndObject, scanEndArray:
|
||||
if scan.step(scan, ' ') == scanEnd {
|
||||
return data[:i+1], data[i+1:], nil
|
||||
}
|
||||
case scanError:
|
||||
return nil, nil, scan.err
|
||||
case scanEnd:
|
||||
return data[:i], data[i:], nil
|
||||
}
|
||||
}
|
||||
}
|
||||
if scan.eof() == scanError {
|
||||
return nil, nil, scan.err
|
||||
}
|
||||
return data, nil, nil
|
||||
}
|
||||
|
||||
// A SyntaxError is a description of a JSON syntax error.
|
||||
type SyntaxError struct {
|
||||
msg string // description of error
|
||||
Offset int64 // error occurred after reading Offset bytes
|
||||
}
|
||||
|
||||
func (e *SyntaxError) Error() string { return e.msg }
|
||||
|
||||
// A scanner is a JSON scanning state machine.
|
||||
// Callers call scan.reset() and then pass bytes in one at a time
|
||||
// by calling scan.step(&scan, c) for each byte.
|
||||
// The return value, referred to as an opcode, tells the
|
||||
// caller about significant parsing events like beginning
|
||||
// and ending literals, objects, and arrays, so that the
|
||||
// caller can follow along if it wishes.
|
||||
// The return value scanEnd indicates that a single top-level
|
||||
// JSON value has been completed, *before* the byte that
|
||||
// just got passed in. (The indication must be delayed in order
|
||||
// to recognize the end of numbers: is 123 a whole value or
|
||||
// the beginning of 12345e+6?).
|
||||
type scanner struct {
|
||||
// The step is a func to be called to execute the next transition.
|
||||
// Also tried using an integer constant and a single func
|
||||
// with a switch, but using the func directly was 10% faster
|
||||
// on a 64-bit Mac Mini, and it's nicer to read.
|
||||
step func(*scanner, byte) int
|
||||
|
||||
// Reached end of top-level value.
|
||||
endTop bool
|
||||
|
||||
// Stack of what we're in the middle of - array values, object keys, object values.
|
||||
parseState []int
|
||||
|
||||
// Error that happened, if any.
|
||||
err error
|
||||
|
||||
// 1-byte redo (see undo method)
|
||||
redo bool
|
||||
redoCode int
|
||||
redoState func(*scanner, byte) int
|
||||
|
||||
// total bytes consumed, updated by decoder.Decode
|
||||
bytes int64
|
||||
}
|
||||
|
||||
// These values are returned by the state transition functions
|
||||
// assigned to scanner.state and the method scanner.eof.
|
||||
// They give details about the current state of the scan that
|
||||
// callers might be interested to know about.
|
||||
// It is okay to ignore the return value of any particular
|
||||
// call to scanner.state: if one call returns scanError,
|
||||
// every subsequent call will return scanError too.
|
||||
const (
|
||||
// Continue.
|
||||
scanContinue = iota // uninteresting byte
|
||||
scanBeginLiteral // end implied by next result != scanContinue
|
||||
scanBeginObject // begin object
|
||||
scanObjectKey // just finished object key (string)
|
||||
scanObjectValue // just finished non-last object value
|
||||
scanEndObject // end object (implies scanObjectValue if possible)
|
||||
scanBeginArray // begin array
|
||||
scanArrayValue // just finished array value
|
||||
scanEndArray // end array (implies scanArrayValue if possible)
|
||||
scanSkipSpace // space byte; can skip; known to be last "continue" result
|
||||
|
||||
// Stop.
|
||||
scanEnd // top-level value ended *before* this byte; known to be first "stop" result
|
||||
scanError // hit an error, scanner.err.
|
||||
)
|
||||
|
||||
// These values are stored in the parseState stack.
|
||||
// They give the current state of a composite value
|
||||
// being scanned. If the parser is inside a nested value
|
||||
// the parseState describes the nested state, outermost at entry 0.
|
||||
const (
|
||||
parseObjectKey = iota // parsing object key (before colon)
|
||||
parseObjectValue // parsing object value (after colon)
|
||||
parseArrayValue // parsing array value
|
||||
)
|
||||
|
||||
// reset prepares the scanner for use.
|
||||
// It must be called before calling s.step.
|
||||
func (s *scanner) reset() {
|
||||
s.step = stateBeginValue
|
||||
s.parseState = s.parseState[0:0]
|
||||
s.err = nil
|
||||
s.redo = false
|
||||
s.endTop = false
|
||||
}
|
||||
|
||||
// eof tells the scanner that the end of input has been reached.
|
||||
// It returns a scan status just as s.step does.
|
||||
func (s *scanner) eof() int {
|
||||
if s.err != nil {
|
||||
return scanError
|
||||
}
|
||||
if s.endTop {
|
||||
return scanEnd
|
||||
}
|
||||
s.step(s, ' ')
|
||||
if s.endTop {
|
||||
return scanEnd
|
||||
}
|
||||
if s.err == nil {
|
||||
s.err = &SyntaxError{"unexpected end of JSON input", s.bytes}
|
||||
}
|
||||
return scanError
|
||||
}
|
||||
|
||||
// pushParseState pushes a new parse state p onto the parse stack.
|
||||
func (s *scanner) pushParseState(p int) {
|
||||
s.parseState = append(s.parseState, p)
|
||||
}
|
||||
|
||||
// popParseState pops a parse state (already obtained) off the stack
|
||||
// and updates s.step accordingly.
|
||||
func (s *scanner) popParseState() {
|
||||
n := len(s.parseState) - 1
|
||||
s.parseState = s.parseState[0:n]
|
||||
s.redo = false
|
||||
if n == 0 {
|
||||
s.step = stateEndTop
|
||||
s.endTop = true
|
||||
} else {
|
||||
s.step = stateEndValue
|
||||
}
|
||||
}
|
||||
|
||||
func isSpace(c byte) bool {
|
||||
return c == ' ' || c == '\t' || c == '\r' || c == '\n'
|
||||
}
|
||||
|
||||
// stateBeginValueOrEmpty is the state after reading `[`.
|
||||
func stateBeginValueOrEmpty(s *scanner, c byte) int {
|
||||
if c <= ' ' && isSpace(c) {
|
||||
return scanSkipSpace
|
||||
}
|
||||
if c == ']' {
|
||||
return stateEndValue(s, c)
|
||||
}
|
||||
return stateBeginValue(s, c)
|
||||
}
|
||||
|
||||
// stateBeginValue is the state at the beginning of the input.
|
||||
func stateBeginValue(s *scanner, c byte) int {
|
||||
if c <= ' ' && isSpace(c) {
|
||||
return scanSkipSpace
|
||||
}
|
||||
switch c {
|
||||
case '{':
|
||||
s.step = stateBeginStringOrEmpty
|
||||
s.pushParseState(parseObjectKey)
|
||||
return scanBeginObject
|
||||
case '[':
|
||||
s.step = stateBeginValueOrEmpty
|
||||
s.pushParseState(parseArrayValue)
|
||||
return scanBeginArray
|
||||
case '"':
|
||||
s.step = stateInString
|
||||
return scanBeginLiteral
|
||||
case '-':
|
||||
s.step = stateNeg
|
||||
return scanBeginLiteral
|
||||
case '0': // beginning of 0.123
|
||||
s.step = state0
|
||||
return scanBeginLiteral
|
||||
case 't': // beginning of true
|
||||
s.step = stateT
|
||||
return scanBeginLiteral
|
||||
case 'f': // beginning of false
|
||||
s.step = stateF
|
||||
return scanBeginLiteral
|
||||
case 'n': // beginning of null
|
||||
s.step = stateN
|
||||
return scanBeginLiteral
|
||||
}
|
||||
if '1' <= c && c <= '9' { // beginning of 1234.5
|
||||
s.step = state1
|
||||
return scanBeginLiteral
|
||||
}
|
||||
return s.error(c, "looking for beginning of value")
|
||||
}
|
||||
|
||||
// stateBeginStringOrEmpty is the state after reading `{`.
|
||||
func stateBeginStringOrEmpty(s *scanner, c byte) int {
|
||||
if c <= ' ' && isSpace(c) {
|
||||
return scanSkipSpace
|
||||
}
|
||||
if c == '}' {
|
||||
n := len(s.parseState)
|
||||
s.parseState[n-1] = parseObjectValue
|
||||
return stateEndValue(s, c)
|
||||
}
|
||||
return stateBeginString(s, c)
|
||||
}
|
||||
|
||||
// stateBeginString is the state after reading `{"key": value,`.
|
||||
func stateBeginString(s *scanner, c byte) int {
|
||||
if c <= ' ' && isSpace(c) {
|
||||
return scanSkipSpace
|
||||
}
|
||||
if c == '"' {
|
||||
s.step = stateInString
|
||||
return scanBeginLiteral
|
||||
}
|
||||
return s.error(c, "looking for beginning of object key string")
|
||||
}
|
||||
|
||||
// stateEndValue is the state after completing a value,
|
||||
// such as after reading `{}` or `true` or `["x"`.
|
||||
func stateEndValue(s *scanner, c byte) int {
|
||||
n := len(s.parseState)
|
||||
if n == 0 {
|
||||
// Completed top-level before the current byte.
|
||||
s.step = stateEndTop
|
||||
s.endTop = true
|
||||
return stateEndTop(s, c)
|
||||
}
|
||||
if c <= ' ' && isSpace(c) {
|
||||
s.step = stateEndValue
|
||||
return scanSkipSpace
|
||||
}
|
||||
ps := s.parseState[n-1]
|
||||
switch ps {
|
||||
case parseObjectKey:
|
||||
if c == ':' {
|
||||
s.parseState[n-1] = parseObjectValue
|
||||
s.step = stateBeginValue
|
||||
return scanObjectKey
|
||||
}
|
||||
return s.error(c, "after object key")
|
||||
case parseObjectValue:
|
||||
if c == ',' {
|
||||
s.parseState[n-1] = parseObjectKey
|
||||
s.step = stateBeginString
|
||||
return scanObjectValue
|
||||
}
|
||||
if c == '}' {
|
||||
s.popParseState()
|
||||
return scanEndObject
|
||||
}
|
||||
return s.error(c, "after object key:value pair")
|
||||
case parseArrayValue:
|
||||
if c == ',' {
|
||||
s.step = stateBeginValue
|
||||
return scanArrayValue
|
||||
}
|
||||
if c == ']' {
|
||||
s.popParseState()
|
||||
return scanEndArray
|
||||
}
|
||||
return s.error(c, "after array element")
|
||||
}
|
||||
return s.error(c, "")
|
||||
}
|
||||
|
||||
// stateEndTop is the state after finishing the top-level value,
|
||||
// such as after reading `{}` or `[1,2,3]`.
|
||||
// Only space characters should be seen now.
|
||||
func stateEndTop(s *scanner, c byte) int {
|
||||
if c != ' ' && c != '\t' && c != '\r' && c != '\n' {
|
||||
// Complain about non-space byte on next call.
|
||||
s.error(c, "after top-level value")
|
||||
}
|
||||
return scanEnd
|
||||
}
|
||||
|
||||
// stateInString is the state after reading `"`.
|
||||
func stateInString(s *scanner, c byte) int {
|
||||
if c == '"' {
|
||||
s.step = stateEndValue
|
||||
return scanContinue
|
||||
}
|
||||
if c == '\\' {
|
||||
s.step = stateInStringEsc
|
||||
return scanContinue
|
||||
}
|
||||
if c < 0x20 {
|
||||
return s.error(c, "in string literal")
|
||||
}
|
||||
return scanContinue
|
||||
}
|
||||
|
||||
// stateInStringEsc is the state after reading `"\` during a quoted string.
|
||||
func stateInStringEsc(s *scanner, c byte) int {
|
||||
switch c {
|
||||
case 'b', 'f', 'n', 'r', 't', '\\', '/', '"':
|
||||
s.step = stateInString
|
||||
return scanContinue
|
||||
case 'u':
|
||||
s.step = stateInStringEscU
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in string escape code")
|
||||
}
|
||||
|
||||
// stateInStringEscU is the state after reading `"\u` during a quoted string.
|
||||
func stateInStringEscU(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
|
||||
s.step = stateInStringEscU1
|
||||
return scanContinue
|
||||
}
|
||||
// numbers
|
||||
return s.error(c, "in \\u hexadecimal character escape")
|
||||
}
|
||||
|
||||
// stateInStringEscU1 is the state after reading `"\u1` during a quoted string.
|
||||
func stateInStringEscU1(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
|
||||
s.step = stateInStringEscU12
|
||||
return scanContinue
|
||||
}
|
||||
// numbers
|
||||
return s.error(c, "in \\u hexadecimal character escape")
|
||||
}
|
||||
|
||||
// stateInStringEscU12 is the state after reading `"\u12` during a quoted string.
|
||||
func stateInStringEscU12(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
|
||||
s.step = stateInStringEscU123
|
||||
return scanContinue
|
||||
}
|
||||
// numbers
|
||||
return s.error(c, "in \\u hexadecimal character escape")
|
||||
}
|
||||
|
||||
// stateInStringEscU123 is the state after reading `"\u123` during a quoted string.
|
||||
func stateInStringEscU123(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
|
||||
s.step = stateInString
|
||||
return scanContinue
|
||||
}
|
||||
// numbers
|
||||
return s.error(c, "in \\u hexadecimal character escape")
|
||||
}
|
||||
|
||||
// stateNeg is the state after reading `-` during a number.
|
||||
func stateNeg(s *scanner, c byte) int {
|
||||
if c == '0' {
|
||||
s.step = state0
|
||||
return scanContinue
|
||||
}
|
||||
if '1' <= c && c <= '9' {
|
||||
s.step = state1
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in numeric literal")
|
||||
}
|
||||
|
||||
// state1 is the state after reading a non-zero integer during a number,
|
||||
// such as after reading `1` or `100` but not `0`.
|
||||
func state1(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' {
|
||||
s.step = state1
|
||||
return scanContinue
|
||||
}
|
||||
return state0(s, c)
|
||||
}
|
||||
|
||||
// state0 is the state after reading `0` during a number.
|
||||
func state0(s *scanner, c byte) int {
|
||||
if c == '.' {
|
||||
s.step = stateDot
|
||||
return scanContinue
|
||||
}
|
||||
if c == 'e' || c == 'E' {
|
||||
s.step = stateE
|
||||
return scanContinue
|
||||
}
|
||||
return stateEndValue(s, c)
|
||||
}
|
||||
|
||||
// stateDot is the state after reading the integer and decimal point in a number,
|
||||
// such as after reading `1.`.
|
||||
func stateDot(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' {
|
||||
s.step = stateDot0
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "after decimal point in numeric literal")
|
||||
}
|
||||
|
||||
// stateDot0 is the state after reading the integer, decimal point, and subsequent
|
||||
// digits of a number, such as after reading `3.14`.
|
||||
func stateDot0(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' {
|
||||
return scanContinue
|
||||
}
|
||||
if c == 'e' || c == 'E' {
|
||||
s.step = stateE
|
||||
return scanContinue
|
||||
}
|
||||
return stateEndValue(s, c)
|
||||
}
|
||||
|
||||
// stateE is the state after reading the mantissa and e in a number,
|
||||
// such as after reading `314e` or `0.314e`.
|
||||
func stateE(s *scanner, c byte) int {
|
||||
if c == '+' || c == '-' {
|
||||
s.step = stateESign
|
||||
return scanContinue
|
||||
}
|
||||
return stateESign(s, c)
|
||||
}
|
||||
|
||||
// stateESign is the state after reading the mantissa, e, and sign in a number,
|
||||
// such as after reading `314e-` or `0.314e+`.
|
||||
func stateESign(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' {
|
||||
s.step = stateE0
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in exponent of numeric literal")
|
||||
}
|
||||
|
||||
// stateE0 is the state after reading the mantissa, e, optional sign,
|
||||
// and at least one digit of the exponent in a number,
|
||||
// such as after reading `314e-2` or `0.314e+1` or `3.14e0`.
|
||||
func stateE0(s *scanner, c byte) int {
|
||||
if '0' <= c && c <= '9' {
|
||||
return scanContinue
|
||||
}
|
||||
return stateEndValue(s, c)
|
||||
}
|
||||
|
||||
// stateT is the state after reading `t`.
|
||||
func stateT(s *scanner, c byte) int {
|
||||
if c == 'r' {
|
||||
s.step = stateTr
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal true (expecting 'r')")
|
||||
}
|
||||
|
||||
// stateTr is the state after reading `tr`.
|
||||
func stateTr(s *scanner, c byte) int {
|
||||
if c == 'u' {
|
||||
s.step = stateTru
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal true (expecting 'u')")
|
||||
}
|
||||
|
||||
// stateTru is the state after reading `tru`.
|
||||
func stateTru(s *scanner, c byte) int {
|
||||
if c == 'e' {
|
||||
s.step = stateEndValue
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal true (expecting 'e')")
|
||||
}
|
||||
|
||||
// stateF is the state after reading `f`.
|
||||
func stateF(s *scanner, c byte) int {
|
||||
if c == 'a' {
|
||||
s.step = stateFa
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal false (expecting 'a')")
|
||||
}
|
||||
|
||||
// stateFa is the state after reading `fa`.
|
||||
func stateFa(s *scanner, c byte) int {
|
||||
if c == 'l' {
|
||||
s.step = stateFal
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal false (expecting 'l')")
|
||||
}
|
||||
|
||||
// stateFal is the state after reading `fal`.
|
||||
func stateFal(s *scanner, c byte) int {
|
||||
if c == 's' {
|
||||
s.step = stateFals
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal false (expecting 's')")
|
||||
}
|
||||
|
||||
// stateFals is the state after reading `fals`.
|
||||
func stateFals(s *scanner, c byte) int {
|
||||
if c == 'e' {
|
||||
s.step = stateEndValue
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal false (expecting 'e')")
|
||||
}
|
||||
|
||||
// stateN is the state after reading `n`.
|
||||
func stateN(s *scanner, c byte) int {
|
||||
if c == 'u' {
|
||||
s.step = stateNu
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal null (expecting 'u')")
|
||||
}
|
||||
|
||||
// stateNu is the state after reading `nu`.
|
||||
func stateNu(s *scanner, c byte) int {
|
||||
if c == 'l' {
|
||||
s.step = stateNul
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal null (expecting 'l')")
|
||||
}
|
||||
|
||||
// stateNul is the state after reading `nul`.
|
||||
func stateNul(s *scanner, c byte) int {
|
||||
if c == 'l' {
|
||||
s.step = stateEndValue
|
||||
return scanContinue
|
||||
}
|
||||
return s.error(c, "in literal null (expecting 'l')")
|
||||
}
|
||||
|
||||
// stateError is the state after reaching a syntax error,
|
||||
// such as after reading `[1}` or `5.1.2`.
|
||||
func stateError(s *scanner, c byte) int {
|
||||
return scanError
|
||||
}
|
||||
|
||||
// error records an error and switches to the error state.
|
||||
func (s *scanner) error(c byte, context string) int {
|
||||
s.step = stateError
|
||||
s.err = &SyntaxError{"invalid character " + quoteChar(c) + " " + context, s.bytes}
|
||||
return scanError
|
||||
}
|
||||
|
||||
// quoteChar formats c as a quoted character literal
|
||||
func quoteChar(c byte) string {
|
||||
// special cases - different from quoted strings
|
||||
if c == '\'' {
|
||||
return `'\''`
|
||||
}
|
||||
if c == '"' {
|
||||
return `'"'`
|
||||
}
|
||||
|
||||
// use quoted string with different quotation marks
|
||||
s := strconv.Quote(string(c))
|
||||
return "'" + s[1:len(s)-1] + "'"
|
||||
}
|
||||
|
||||
// undo causes the scanner to return scanCode from the next state transition.
|
||||
// This gives callers a simple 1-byte undo mechanism.
|
||||
func (s *scanner) undo(scanCode int) {
|
||||
if s.redo {
|
||||
panic("json: invalid use of scanner")
|
||||
}
|
||||
s.redoCode = scanCode
|
||||
s.redoState = s.step
|
||||
s.step = stateRedo
|
||||
s.redo = true
|
||||
}
|
||||
|
||||
// stateRedo helps implement the scanner's 1-byte undo.
|
||||
func stateRedo(s *scanner, c byte) int {
|
||||
s.redo = false
|
||||
s.step = s.redoState
|
||||
return s.redoCode
|
||||
}
|
||||
480
vendor/gopkg.in/square/go-jose.v2/json/stream.go
generated
vendored
Normal file
480
vendor/gopkg.in/square/go-jose.v2/json/stream.go
generated
vendored
Normal file
@ -0,0 +1,480 @@
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package json
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"io"
|
||||
)
|
||||
|
||||
// A Decoder reads and decodes JSON objects from an input stream.
|
||||
type Decoder struct {
|
||||
r io.Reader
|
||||
buf []byte
|
||||
d decodeState
|
||||
scanp int // start of unread data in buf
|
||||
scan scanner
|
||||
err error
|
||||
|
||||
tokenState int
|
||||
tokenStack []int
|
||||
}
|
||||
|
||||
// NewDecoder returns a new decoder that reads from r.
|
||||
//
|
||||
// The decoder introduces its own buffering and may
|
||||
// read data from r beyond the JSON values requested.
|
||||
func NewDecoder(r io.Reader) *Decoder {
|
||||
return &Decoder{r: r}
|
||||
}
|
||||
|
||||
// UseNumber causes the Decoder to unmarshal a number into an interface{} as a
|
||||
// Number instead of as a float64.
|
||||
func (dec *Decoder) UseNumber() { dec.d.useNumber = true }
|
||||
|
||||
// Decode reads the next JSON-encoded value from its
|
||||
// input and stores it in the value pointed to by v.
|
||||
//
|
||||
// See the documentation for Unmarshal for details about
|
||||
// the conversion of JSON into a Go value.
|
||||
func (dec *Decoder) Decode(v interface{}) error {
|
||||
if dec.err != nil {
|
||||
return dec.err
|
||||
}
|
||||
|
||||
if err := dec.tokenPrepareForDecode(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if !dec.tokenValueAllowed() {
|
||||
return &SyntaxError{msg: "not at beginning of value"}
|
||||
}
|
||||
|
||||
// Read whole value into buffer.
|
||||
n, err := dec.readValue()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
dec.d.init(dec.buf[dec.scanp : dec.scanp+n])
|
||||
dec.scanp += n
|
||||
|
||||
// Don't save err from unmarshal into dec.err:
|
||||
// the connection is still usable since we read a complete JSON
|
||||
// object from it before the error happened.
|
||||
err = dec.d.unmarshal(v)
|
||||
|
||||
// fixup token streaming state
|
||||
dec.tokenValueEnd()
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
// Buffered returns a reader of the data remaining in the Decoder's
|
||||
// buffer. The reader is valid until the next call to Decode.
|
||||
func (dec *Decoder) Buffered() io.Reader {
|
||||
return bytes.NewReader(dec.buf[dec.scanp:])
|
||||
}
|
||||
|
||||
// readValue reads a JSON value into dec.buf.
|
||||
// It returns the length of the encoding.
|
||||
func (dec *Decoder) readValue() (int, error) {
|
||||
dec.scan.reset()
|
||||
|
||||
scanp := dec.scanp
|
||||
var err error
|
||||
Input:
|
||||
for {
|
||||
// Look in the buffer for a new value.
|
||||
for i, c := range dec.buf[scanp:] {
|
||||
dec.scan.bytes++
|
||||
v := dec.scan.step(&dec.scan, c)
|
||||
if v == scanEnd {
|
||||
scanp += i
|
||||
break Input
|
||||
}
|
||||
// scanEnd is delayed one byte.
|
||||
// We might block trying to get that byte from src,
|
||||
// so instead invent a space byte.
|
||||
if (v == scanEndObject || v == scanEndArray) && dec.scan.step(&dec.scan, ' ') == scanEnd {
|
||||
scanp += i + 1
|
||||
break Input
|
||||
}
|
||||
if v == scanError {
|
||||
dec.err = dec.scan.err
|
||||
return 0, dec.scan.err
|
||||
}
|
||||
}
|
||||
scanp = len(dec.buf)
|
||||
|
||||
// Did the last read have an error?
|
||||
// Delayed until now to allow buffer scan.
|
||||
if err != nil {
|
||||
if err == io.EOF {
|
||||
if dec.scan.step(&dec.scan, ' ') == scanEnd {
|
||||
break Input
|
||||
}
|
||||
if nonSpace(dec.buf) {
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
}
|
||||
dec.err = err
|
||||
return 0, err
|
||||
}
|
||||
|
||||
n := scanp - dec.scanp
|
||||
err = dec.refill()
|
||||
scanp = dec.scanp + n
|
||||
}
|
||||
return scanp - dec.scanp, nil
|
||||
}
|
||||
|
||||
func (dec *Decoder) refill() error {
|
||||
// Make room to read more into the buffer.
|
||||
// First slide down data already consumed.
|
||||
if dec.scanp > 0 {
|
||||
n := copy(dec.buf, dec.buf[dec.scanp:])
|
||||
dec.buf = dec.buf[:n]
|
||||
dec.scanp = 0
|
||||
}
|
||||
|
||||
// Grow buffer if not large enough.
|
||||
const minRead = 512
|
||||
if cap(dec.buf)-len(dec.buf) < minRead {
|
||||
newBuf := make([]byte, len(dec.buf), 2*cap(dec.buf)+minRead)
|
||||
copy(newBuf, dec.buf)
|
||||
dec.buf = newBuf
|
||||
}
|
||||
|
||||
// Read. Delay error for next iteration (after scan).
|
||||
n, err := dec.r.Read(dec.buf[len(dec.buf):cap(dec.buf)])
|
||||
dec.buf = dec.buf[0 : len(dec.buf)+n]
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
func nonSpace(b []byte) bool {
|
||||
for _, c := range b {
|
||||
if !isSpace(c) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// An Encoder writes JSON objects to an output stream.
|
||||
type Encoder struct {
|
||||
w io.Writer
|
||||
err error
|
||||
}
|
||||
|
||||
// NewEncoder returns a new encoder that writes to w.
|
||||
func NewEncoder(w io.Writer) *Encoder {
|
||||
return &Encoder{w: w}
|
||||
}
|
||||
|
||||
// Encode writes the JSON encoding of v to the stream,
|
||||
// followed by a newline character.
|
||||
//
|
||||
// See the documentation for Marshal for details about the
|
||||
// conversion of Go values to JSON.
|
||||
func (enc *Encoder) Encode(v interface{}) error {
|
||||
if enc.err != nil {
|
||||
return enc.err
|
||||
}
|
||||
e := newEncodeState()
|
||||
err := e.marshal(v)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Terminate each value with a newline.
|
||||
// This makes the output look a little nicer
|
||||
// when debugging, and some kind of space
|
||||
// is required if the encoded value was a number,
|
||||
// so that the reader knows there aren't more
|
||||
// digits coming.
|
||||
e.WriteByte('\n')
|
||||
|
||||
if _, err = enc.w.Write(e.Bytes()); err != nil {
|
||||
enc.err = err
|
||||
}
|
||||
encodeStatePool.Put(e)
|
||||
return err
|
||||
}
|
||||
|
||||
// RawMessage is a raw encoded JSON object.
|
||||
// It implements Marshaler and Unmarshaler and can
|
||||
// be used to delay JSON decoding or precompute a JSON encoding.
|
||||
type RawMessage []byte
|
||||
|
||||
// MarshalJSON returns *m as the JSON encoding of m.
|
||||
func (m *RawMessage) MarshalJSON() ([]byte, error) {
|
||||
return *m, nil
|
||||
}
|
||||
|
||||
// UnmarshalJSON sets *m to a copy of data.
|
||||
func (m *RawMessage) UnmarshalJSON(data []byte) error {
|
||||
if m == nil {
|
||||
return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")
|
||||
}
|
||||
*m = append((*m)[0:0], data...)
|
||||
return nil
|
||||
}
|
||||
|
||||
var _ Marshaler = (*RawMessage)(nil)
|
||||
var _ Unmarshaler = (*RawMessage)(nil)
|
||||
|
||||
// A Token holds a value of one of these types:
|
||||
//
|
||||
// Delim, for the four JSON delimiters [ ] { }
|
||||
// bool, for JSON booleans
|
||||
// float64, for JSON numbers
|
||||
// Number, for JSON numbers
|
||||
// string, for JSON string literals
|
||||
// nil, for JSON null
|
||||
//
|
||||
type Token interface{}
|
||||
|
||||
const (
|
||||
tokenTopValue = iota
|
||||
tokenArrayStart
|
||||
tokenArrayValue
|
||||
tokenArrayComma
|
||||
tokenObjectStart
|
||||
tokenObjectKey
|
||||
tokenObjectColon
|
||||
tokenObjectValue
|
||||
tokenObjectComma
|
||||
)
|
||||
|
||||
// advance tokenstate from a separator state to a value state
|
||||
func (dec *Decoder) tokenPrepareForDecode() error {
|
||||
// Note: Not calling peek before switch, to avoid
|
||||
// putting peek into the standard Decode path.
|
||||
// peek is only called when using the Token API.
|
||||
switch dec.tokenState {
|
||||
case tokenArrayComma:
|
||||
c, err := dec.peek()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if c != ',' {
|
||||
return &SyntaxError{"expected comma after array element", 0}
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenState = tokenArrayValue
|
||||
case tokenObjectColon:
|
||||
c, err := dec.peek()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if c != ':' {
|
||||
return &SyntaxError{"expected colon after object key", 0}
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenState = tokenObjectValue
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (dec *Decoder) tokenValueAllowed() bool {
|
||||
switch dec.tokenState {
|
||||
case tokenTopValue, tokenArrayStart, tokenArrayValue, tokenObjectValue:
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (dec *Decoder) tokenValueEnd() {
|
||||
switch dec.tokenState {
|
||||
case tokenArrayStart, tokenArrayValue:
|
||||
dec.tokenState = tokenArrayComma
|
||||
case tokenObjectValue:
|
||||
dec.tokenState = tokenObjectComma
|
||||
}
|
||||
}
|
||||
|
||||
// A Delim is a JSON array or object delimiter, one of [ ] { or }.
|
||||
type Delim rune
|
||||
|
||||
func (d Delim) String() string {
|
||||
return string(d)
|
||||
}
|
||||
|
||||
// Token returns the next JSON token in the input stream.
|
||||
// At the end of the input stream, Token returns nil, io.EOF.
|
||||
//
|
||||
// Token guarantees that the delimiters [ ] { } it returns are
|
||||
// properly nested and matched: if Token encounters an unexpected
|
||||
// delimiter in the input, it will return an error.
|
||||
//
|
||||
// The input stream consists of basic JSON values—bool, string,
|
||||
// number, and null—along with delimiters [ ] { } of type Delim
|
||||
// to mark the start and end of arrays and objects.
|
||||
// Commas and colons are elided.
|
||||
func (dec *Decoder) Token() (Token, error) {
|
||||
for {
|
||||
c, err := dec.peek()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch c {
|
||||
case '[':
|
||||
if !dec.tokenValueAllowed() {
|
||||
return dec.tokenError(c)
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenStack = append(dec.tokenStack, dec.tokenState)
|
||||
dec.tokenState = tokenArrayStart
|
||||
return Delim('['), nil
|
||||
|
||||
case ']':
|
||||
if dec.tokenState != tokenArrayStart && dec.tokenState != tokenArrayComma {
|
||||
return dec.tokenError(c)
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
|
||||
dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
|
||||
dec.tokenValueEnd()
|
||||
return Delim(']'), nil
|
||||
|
||||
case '{':
|
||||
if !dec.tokenValueAllowed() {
|
||||
return dec.tokenError(c)
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenStack = append(dec.tokenStack, dec.tokenState)
|
||||
dec.tokenState = tokenObjectStart
|
||||
return Delim('{'), nil
|
||||
|
||||
case '}':
|
||||
if dec.tokenState != tokenObjectStart && dec.tokenState != tokenObjectComma {
|
||||
return dec.tokenError(c)
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
|
||||
dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
|
||||
dec.tokenValueEnd()
|
||||
return Delim('}'), nil
|
||||
|
||||
case ':':
|
||||
if dec.tokenState != tokenObjectColon {
|
||||
return dec.tokenError(c)
|
||||
}
|
||||
dec.scanp++
|
||||
dec.tokenState = tokenObjectValue
|
||||
continue
|
||||
|
||||
case ',':
|
||||
if dec.tokenState == tokenArrayComma {
|
||||
dec.scanp++
|
||||
dec.tokenState = tokenArrayValue
|
||||
continue
|
||||
}
|
||||
if dec.tokenState == tokenObjectComma {
|
||||
dec.scanp++
|
||||
dec.tokenState = tokenObjectKey
|
||||
continue
|
||||
}
|
||||
return dec.tokenError(c)
|
||||
|
||||
case '"':
|
||||
if dec.tokenState == tokenObjectStart || dec.tokenState == tokenObjectKey {
|
||||
var x string
|
||||
old := dec.tokenState
|
||||
dec.tokenState = tokenTopValue
|
||||
err := dec.Decode(&x)
|
||||
dec.tokenState = old
|
||||
if err != nil {
|
||||
clearOffset(err)
|
||||
return nil, err
|
||||
}
|
||||
dec.tokenState = tokenObjectColon
|
||||
return x, nil
|
||||
}
|
||||
fallthrough
|
||||
|
||||
default:
|
||||
if !dec.tokenValueAllowed() {
|
||||
return dec.tokenError(c)
|
||||
}
|
||||
var x interface{}
|
||||
if err := dec.Decode(&x); err != nil {
|
||||
clearOffset(err)
|
||||
return nil, err
|
||||
}
|
||||
return x, nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func clearOffset(err error) {
|
||||
if s, ok := err.(*SyntaxError); ok {
|
||||
s.Offset = 0
|
||||
}
|
||||
}
|
||||
|
||||
func (dec *Decoder) tokenError(c byte) (Token, error) {
|
||||
var context string
|
||||
switch dec.tokenState {
|
||||
case tokenTopValue:
|
||||
context = " looking for beginning of value"
|
||||
case tokenArrayStart, tokenArrayValue, tokenObjectValue:
|
||||
context = " looking for beginning of value"
|
||||
case tokenArrayComma:
|
||||
context = " after array element"
|
||||
case tokenObjectKey:
|
||||
context = " looking for beginning of object key string"
|
||||
case tokenObjectColon:
|
||||
context = " after object key"
|
||||
case tokenObjectComma:
|
||||
context = " after object key:value pair"
|
||||
}
|
||||
return nil, &SyntaxError{"invalid character " + quoteChar(c) + " " + context, 0}
|
||||
}
|
||||
|
||||
// More reports whether there is another element in the
|
||||
// current array or object being parsed.
|
||||
func (dec *Decoder) More() bool {
|
||||
c, err := dec.peek()
|
||||
return err == nil && c != ']' && c != '}'
|
||||
}
|
||||
|
||||
func (dec *Decoder) peek() (byte, error) {
|
||||
var err error
|
||||
for {
|
||||
for i := dec.scanp; i < len(dec.buf); i++ {
|
||||
c := dec.buf[i]
|
||||
if isSpace(c) {
|
||||
continue
|
||||
}
|
||||
dec.scanp = i
|
||||
return c, nil
|
||||
}
|
||||
// buffer has been scanned, now report any error
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
err = dec.refill()
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
TODO
|
||||
|
||||
// EncodeToken writes the given JSON token to the stream.
|
||||
// It returns an error if the delimiters [ ] { } are not properly used.
|
||||
//
|
||||
// EncodeToken does not call Flush, because usually it is part of
|
||||
// a larger operation such as Encode, and those will call Flush when finished.
|
||||
// Callers that create an Encoder and then invoke EncodeToken directly,
|
||||
// without using Encode, need to call Flush when finished to ensure that
|
||||
// the JSON is written to the underlying writer.
|
||||
func (e *Encoder) EncodeToken(t Token) error {
|
||||
...
|
||||
}
|
||||
|
||||
*/
|
||||
44
vendor/gopkg.in/square/go-jose.v2/json/tags.go
generated
vendored
Normal file
44
vendor/gopkg.in/square/go-jose.v2/json/tags.go
generated
vendored
Normal file
@ -0,0 +1,44 @@
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package json
|
||||
|
||||
import (
|
||||
"strings"
|
||||
)
|
||||
|
||||
// tagOptions is the string following a comma in a struct field's "json"
|
||||
// tag, or the empty string. It does not include the leading comma.
|
||||
type tagOptions string
|
||||
|
||||
// parseTag splits a struct field's json tag into its name and
|
||||
// comma-separated options.
|
||||
func parseTag(tag string) (string, tagOptions) {
|
||||
if idx := strings.Index(tag, ","); idx != -1 {
|
||||
return tag[:idx], tagOptions(tag[idx+1:])
|
||||
}
|
||||
return tag, tagOptions("")
|
||||
}
|
||||
|
||||
// Contains reports whether a comma-separated list of options
|
||||
// contains a particular substr flag. substr must be surrounded by a
|
||||
// string boundary or commas.
|
||||
func (o tagOptions) Contains(optionName string) bool {
|
||||
if len(o) == 0 {
|
||||
return false
|
||||
}
|
||||
s := string(o)
|
||||
for s != "" {
|
||||
var next string
|
||||
i := strings.Index(s, ",")
|
||||
if i >= 0 {
|
||||
s, next = s[:i], s[i+1:]
|
||||
}
|
||||
if s == optionName {
|
||||
return true
|
||||
}
|
||||
s = next
|
||||
}
|
||||
return false
|
||||
}
|
||||
294
vendor/gopkg.in/square/go-jose.v2/jwe.go
generated
vendored
Normal file
294
vendor/gopkg.in/square/go-jose.v2/jwe.go
generated
vendored
Normal file
@ -0,0 +1,294 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// rawJSONWebEncryption represents a raw JWE JSON object. Used for parsing/serializing.
|
||||
type rawJSONWebEncryption struct {
|
||||
Protected *byteBuffer `json:"protected,omitempty"`
|
||||
Unprotected *rawHeader `json:"unprotected,omitempty"`
|
||||
Header *rawHeader `json:"header,omitempty"`
|
||||
Recipients []rawRecipientInfo `json:"recipients,omitempty"`
|
||||
Aad *byteBuffer `json:"aad,omitempty"`
|
||||
EncryptedKey *byteBuffer `json:"encrypted_key,omitempty"`
|
||||
Iv *byteBuffer `json:"iv,omitempty"`
|
||||
Ciphertext *byteBuffer `json:"ciphertext,omitempty"`
|
||||
Tag *byteBuffer `json:"tag,omitempty"`
|
||||
}
|
||||
|
||||
// rawRecipientInfo represents a raw JWE Per-Recipient header JSON object. Used for parsing/serializing.
|
||||
type rawRecipientInfo struct {
|
||||
Header *rawHeader `json:"header,omitempty"`
|
||||
EncryptedKey string `json:"encrypted_key,omitempty"`
|
||||
}
|
||||
|
||||
// JSONWebEncryption represents an encrypted JWE object after parsing.
|
||||
type JSONWebEncryption struct {
|
||||
Header Header
|
||||
protected, unprotected *rawHeader
|
||||
recipients []recipientInfo
|
||||
aad, iv, ciphertext, tag []byte
|
||||
original *rawJSONWebEncryption
|
||||
}
|
||||
|
||||
// recipientInfo represents a raw JWE Per-Recipient header JSON object after parsing.
|
||||
type recipientInfo struct {
|
||||
header *rawHeader
|
||||
encryptedKey []byte
|
||||
}
|
||||
|
||||
// GetAuthData retrieves the (optional) authenticated data attached to the object.
|
||||
func (obj JSONWebEncryption) GetAuthData() []byte {
|
||||
if obj.aad != nil {
|
||||
out := make([]byte, len(obj.aad))
|
||||
copy(out, obj.aad)
|
||||
return out
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Get the merged header values
|
||||
func (obj JSONWebEncryption) mergedHeaders(recipient *recipientInfo) rawHeader {
|
||||
out := rawHeader{}
|
||||
out.merge(obj.protected)
|
||||
out.merge(obj.unprotected)
|
||||
|
||||
if recipient != nil {
|
||||
out.merge(recipient.header)
|
||||
}
|
||||
|
||||
return out
|
||||
}
|
||||
|
||||
// Get the additional authenticated data from a JWE object.
|
||||
func (obj JSONWebEncryption) computeAuthData() []byte {
|
||||
var protected string
|
||||
|
||||
if obj.original != nil && obj.original.Protected != nil {
|
||||
protected = obj.original.Protected.base64()
|
||||
} else if obj.protected != nil {
|
||||
protected = base64.RawURLEncoding.EncodeToString(mustSerializeJSON((obj.protected)))
|
||||
} else {
|
||||
protected = ""
|
||||
}
|
||||
|
||||
output := []byte(protected)
|
||||
if obj.aad != nil {
|
||||
output = append(output, '.')
|
||||
output = append(output, []byte(base64.RawURLEncoding.EncodeToString(obj.aad))...)
|
||||
}
|
||||
|
||||
return output
|
||||
}
|
||||
|
||||
// ParseEncrypted parses an encrypted message in compact or full serialization format.
|
||||
func ParseEncrypted(input string) (*JSONWebEncryption, error) {
|
||||
input = stripWhitespace(input)
|
||||
if strings.HasPrefix(input, "{") {
|
||||
return parseEncryptedFull(input)
|
||||
}
|
||||
|
||||
return parseEncryptedCompact(input)
|
||||
}
|
||||
|
||||
// parseEncryptedFull parses a message in compact format.
|
||||
func parseEncryptedFull(input string) (*JSONWebEncryption, error) {
|
||||
var parsed rawJSONWebEncryption
|
||||
err := json.Unmarshal([]byte(input), &parsed)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return parsed.sanitized()
|
||||
}
|
||||
|
||||
// sanitized produces a cleaned-up JWE object from the raw JSON.
|
||||
func (parsed *rawJSONWebEncryption) sanitized() (*JSONWebEncryption, error) {
|
||||
obj := &JSONWebEncryption{
|
||||
original: parsed,
|
||||
unprotected: parsed.Unprotected,
|
||||
}
|
||||
|
||||
// Check that there is not a nonce in the unprotected headers
|
||||
if parsed.Unprotected != nil {
|
||||
if nonce := parsed.Unprotected.getNonce(); nonce != "" {
|
||||
return nil, ErrUnprotectedNonce
|
||||
}
|
||||
}
|
||||
if parsed.Header != nil {
|
||||
if nonce := parsed.Header.getNonce(); nonce != "" {
|
||||
return nil, ErrUnprotectedNonce
|
||||
}
|
||||
}
|
||||
|
||||
if parsed.Protected != nil && len(parsed.Protected.bytes()) > 0 {
|
||||
err := json.Unmarshal(parsed.Protected.bytes(), &obj.protected)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid protected header: %s, %s", err, parsed.Protected.base64())
|
||||
}
|
||||
}
|
||||
|
||||
// Note: this must be called _after_ we parse the protected header,
|
||||
// otherwise fields from the protected header will not get picked up.
|
||||
var err error
|
||||
mergedHeaders := obj.mergedHeaders(nil)
|
||||
obj.Header, err = mergedHeaders.sanitized()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: cannot sanitize merged headers: %v (%v)", err, mergedHeaders)
|
||||
}
|
||||
|
||||
if len(parsed.Recipients) == 0 {
|
||||
obj.recipients = []recipientInfo{
|
||||
{
|
||||
header: parsed.Header,
|
||||
encryptedKey: parsed.EncryptedKey.bytes(),
|
||||
},
|
||||
}
|
||||
} else {
|
||||
obj.recipients = make([]recipientInfo, len(parsed.Recipients))
|
||||
for r := range parsed.Recipients {
|
||||
encryptedKey, err := base64.RawURLEncoding.DecodeString(parsed.Recipients[r].EncryptedKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Check that there is not a nonce in the unprotected header
|
||||
if parsed.Recipients[r].Header != nil && parsed.Recipients[r].Header.getNonce() != "" {
|
||||
return nil, ErrUnprotectedNonce
|
||||
}
|
||||
|
||||
obj.recipients[r].header = parsed.Recipients[r].Header
|
||||
obj.recipients[r].encryptedKey = encryptedKey
|
||||
}
|
||||
}
|
||||
|
||||
for _, recipient := range obj.recipients {
|
||||
headers := obj.mergedHeaders(&recipient)
|
||||
if headers.getAlgorithm() == "" || headers.getEncryption() == "" {
|
||||
return nil, fmt.Errorf("square/go-jose: message is missing alg/enc headers")
|
||||
}
|
||||
}
|
||||
|
||||
obj.iv = parsed.Iv.bytes()
|
||||
obj.ciphertext = parsed.Ciphertext.bytes()
|
||||
obj.tag = parsed.Tag.bytes()
|
||||
obj.aad = parsed.Aad.bytes()
|
||||
|
||||
return obj, nil
|
||||
}
|
||||
|
||||
// parseEncryptedCompact parses a message in compact format.
|
||||
func parseEncryptedCompact(input string) (*JSONWebEncryption, error) {
|
||||
parts := strings.Split(input, ".")
|
||||
if len(parts) != 5 {
|
||||
return nil, fmt.Errorf("square/go-jose: compact JWE format must have five parts")
|
||||
}
|
||||
|
||||
rawProtected, err := base64.RawURLEncoding.DecodeString(parts[0])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
encryptedKey, err := base64.RawURLEncoding.DecodeString(parts[1])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
iv, err := base64.RawURLEncoding.DecodeString(parts[2])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ciphertext, err := base64.RawURLEncoding.DecodeString(parts[3])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tag, err := base64.RawURLEncoding.DecodeString(parts[4])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
raw := &rawJSONWebEncryption{
|
||||
Protected: newBuffer(rawProtected),
|
||||
EncryptedKey: newBuffer(encryptedKey),
|
||||
Iv: newBuffer(iv),
|
||||
Ciphertext: newBuffer(ciphertext),
|
||||
Tag: newBuffer(tag),
|
||||
}
|
||||
|
||||
return raw.sanitized()
|
||||
}
|
||||
|
||||
// CompactSerialize serializes an object using the compact serialization format.
|
||||
func (obj JSONWebEncryption) CompactSerialize() (string, error) {
|
||||
if len(obj.recipients) != 1 || obj.unprotected != nil ||
|
||||
obj.protected == nil || obj.recipients[0].header != nil {
|
||||
return "", ErrNotSupported
|
||||
}
|
||||
|
||||
serializedProtected := mustSerializeJSON(obj.protected)
|
||||
|
||||
return fmt.Sprintf(
|
||||
"%s.%s.%s.%s.%s",
|
||||
base64.RawURLEncoding.EncodeToString(serializedProtected),
|
||||
base64.RawURLEncoding.EncodeToString(obj.recipients[0].encryptedKey),
|
||||
base64.RawURLEncoding.EncodeToString(obj.iv),
|
||||
base64.RawURLEncoding.EncodeToString(obj.ciphertext),
|
||||
base64.RawURLEncoding.EncodeToString(obj.tag)), nil
|
||||
}
|
||||
|
||||
// FullSerialize serializes an object using the full JSON serialization format.
|
||||
func (obj JSONWebEncryption) FullSerialize() string {
|
||||
raw := rawJSONWebEncryption{
|
||||
Unprotected: obj.unprotected,
|
||||
Iv: newBuffer(obj.iv),
|
||||
Ciphertext: newBuffer(obj.ciphertext),
|
||||
EncryptedKey: newBuffer(obj.recipients[0].encryptedKey),
|
||||
Tag: newBuffer(obj.tag),
|
||||
Aad: newBuffer(obj.aad),
|
||||
Recipients: []rawRecipientInfo{},
|
||||
}
|
||||
|
||||
if len(obj.recipients) > 1 {
|
||||
for _, recipient := range obj.recipients {
|
||||
info := rawRecipientInfo{
|
||||
Header: recipient.header,
|
||||
EncryptedKey: base64.RawURLEncoding.EncodeToString(recipient.encryptedKey),
|
||||
}
|
||||
raw.Recipients = append(raw.Recipients, info)
|
||||
}
|
||||
} else {
|
||||
// Use flattened serialization
|
||||
raw.Header = obj.recipients[0].header
|
||||
raw.EncryptedKey = newBuffer(obj.recipients[0].encryptedKey)
|
||||
}
|
||||
|
||||
if obj.protected != nil {
|
||||
raw.Protected = newBuffer(mustSerializeJSON(obj.protected))
|
||||
}
|
||||
|
||||
return string(mustSerializeJSON(raw))
|
||||
}
|
||||
608
vendor/gopkg.in/square/go-jose.v2/jwk.go
generated
vendored
Normal file
608
vendor/gopkg.in/square/go-jose.v2/jwk.go
generated
vendored
Normal file
@ -0,0 +1,608 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"crypto"
|
||||
"crypto/ecdsa"
|
||||
"crypto/elliptic"
|
||||
"crypto/rsa"
|
||||
"crypto/x509"
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"reflect"
|
||||
"strings"
|
||||
|
||||
"golang.org/x/crypto/ed25519"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// rawJSONWebKey represents a public or private key in JWK format, used for parsing/serializing.
|
||||
type rawJSONWebKey struct {
|
||||
Use string `json:"use,omitempty"`
|
||||
Kty string `json:"kty,omitempty"`
|
||||
Kid string `json:"kid,omitempty"`
|
||||
Crv string `json:"crv,omitempty"`
|
||||
Alg string `json:"alg,omitempty"`
|
||||
K *byteBuffer `json:"k,omitempty"`
|
||||
X *byteBuffer `json:"x,omitempty"`
|
||||
Y *byteBuffer `json:"y,omitempty"`
|
||||
N *byteBuffer `json:"n,omitempty"`
|
||||
E *byteBuffer `json:"e,omitempty"`
|
||||
// -- Following fields are only used for private keys --
|
||||
// RSA uses D, P and Q, while ECDSA uses only D. Fields Dp, Dq, and Qi are
|
||||
// completely optional. Therefore for RSA/ECDSA, D != nil is a contract that
|
||||
// we have a private key whereas D == nil means we have only a public key.
|
||||
D *byteBuffer `json:"d,omitempty"`
|
||||
P *byteBuffer `json:"p,omitempty"`
|
||||
Q *byteBuffer `json:"q,omitempty"`
|
||||
Dp *byteBuffer `json:"dp,omitempty"`
|
||||
Dq *byteBuffer `json:"dq,omitempty"`
|
||||
Qi *byteBuffer `json:"qi,omitempty"`
|
||||
// Certificates
|
||||
X5c []string `json:"x5c,omitempty"`
|
||||
}
|
||||
|
||||
// JSONWebKey represents a public or private key in JWK format.
|
||||
type JSONWebKey struct {
|
||||
Key interface{}
|
||||
Certificates []*x509.Certificate
|
||||
KeyID string
|
||||
Algorithm string
|
||||
Use string
|
||||
}
|
||||
|
||||
// MarshalJSON serializes the given key to its JSON representation.
|
||||
func (k JSONWebKey) MarshalJSON() ([]byte, error) {
|
||||
var raw *rawJSONWebKey
|
||||
var err error
|
||||
|
||||
switch key := k.Key.(type) {
|
||||
case ed25519.PublicKey:
|
||||
raw = fromEdPublicKey(key)
|
||||
case *ecdsa.PublicKey:
|
||||
raw, err = fromEcPublicKey(key)
|
||||
case *rsa.PublicKey:
|
||||
raw = fromRsaPublicKey(key)
|
||||
case ed25519.PrivateKey:
|
||||
raw, err = fromEdPrivateKey(key)
|
||||
case *ecdsa.PrivateKey:
|
||||
raw, err = fromEcPrivateKey(key)
|
||||
case *rsa.PrivateKey:
|
||||
raw, err = fromRsaPrivateKey(key)
|
||||
case []byte:
|
||||
raw, err = fromSymmetricKey(key)
|
||||
default:
|
||||
return nil, fmt.Errorf("square/go-jose: unknown key type '%s'", reflect.TypeOf(key))
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
raw.Kid = k.KeyID
|
||||
raw.Alg = k.Algorithm
|
||||
raw.Use = k.Use
|
||||
|
||||
for _, cert := range k.Certificates {
|
||||
raw.X5c = append(raw.X5c, base64.StdEncoding.EncodeToString(cert.Raw))
|
||||
}
|
||||
|
||||
return json.Marshal(raw)
|
||||
}
|
||||
|
||||
// UnmarshalJSON reads a key from its JSON representation.
|
||||
func (k *JSONWebKey) UnmarshalJSON(data []byte) (err error) {
|
||||
var raw rawJSONWebKey
|
||||
err = json.Unmarshal(data, &raw)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var key interface{}
|
||||
switch raw.Kty {
|
||||
case "EC":
|
||||
if raw.D != nil {
|
||||
key, err = raw.ecPrivateKey()
|
||||
} else {
|
||||
key, err = raw.ecPublicKey()
|
||||
}
|
||||
case "RSA":
|
||||
if raw.D != nil {
|
||||
key, err = raw.rsaPrivateKey()
|
||||
} else {
|
||||
key, err = raw.rsaPublicKey()
|
||||
}
|
||||
case "oct":
|
||||
key, err = raw.symmetricKey()
|
||||
case "OKP":
|
||||
if raw.Crv == "Ed25519" && raw.X != nil {
|
||||
if raw.D != nil {
|
||||
key, err = raw.edPrivateKey()
|
||||
} else {
|
||||
key, err = raw.edPublicKey()
|
||||
}
|
||||
} else {
|
||||
err = fmt.Errorf("square/go-jose: unknown curve %s'", raw.Crv)
|
||||
}
|
||||
default:
|
||||
err = fmt.Errorf("square/go-jose: unknown json web key type '%s'", raw.Kty)
|
||||
}
|
||||
|
||||
if err == nil {
|
||||
*k = JSONWebKey{Key: key, KeyID: raw.Kid, Algorithm: raw.Alg, Use: raw.Use}
|
||||
|
||||
k.Certificates, err = parseCertificateChain(raw.X5c)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to unmarshal x5c field: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// JSONWebKeySet represents a JWK Set object.
|
||||
type JSONWebKeySet struct {
|
||||
Keys []JSONWebKey `json:"keys"`
|
||||
}
|
||||
|
||||
// Key convenience method returns keys by key ID. Specification states
|
||||
// that a JWK Set "SHOULD" use distinct key IDs, but allows for some
|
||||
// cases where they are not distinct. Hence method returns a slice
|
||||
// of JSONWebKeys.
|
||||
func (s *JSONWebKeySet) Key(kid string) []JSONWebKey {
|
||||
var keys []JSONWebKey
|
||||
for _, key := range s.Keys {
|
||||
if key.KeyID == kid {
|
||||
keys = append(keys, key)
|
||||
}
|
||||
}
|
||||
|
||||
return keys
|
||||
}
|
||||
|
||||
const rsaThumbprintTemplate = `{"e":"%s","kty":"RSA","n":"%s"}`
|
||||
const ecThumbprintTemplate = `{"crv":"%s","kty":"EC","x":"%s","y":"%s"}`
|
||||
const edThumbprintTemplate = `{"crv":"%s","kty":"OKP",x":"%s"}`
|
||||
|
||||
func ecThumbprintInput(curve elliptic.Curve, x, y *big.Int) (string, error) {
|
||||
coordLength := curveSize(curve)
|
||||
crv, err := curveName(curve)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if len(x.Bytes()) > coordLength || len(y.Bytes()) > coordLength {
|
||||
return "", errors.New("square/go-jose: invalid elliptic key (too large)")
|
||||
}
|
||||
|
||||
return fmt.Sprintf(ecThumbprintTemplate, crv,
|
||||
newFixedSizeBuffer(x.Bytes(), coordLength).base64(),
|
||||
newFixedSizeBuffer(y.Bytes(), coordLength).base64()), nil
|
||||
}
|
||||
|
||||
func rsaThumbprintInput(n *big.Int, e int) (string, error) {
|
||||
return fmt.Sprintf(rsaThumbprintTemplate,
|
||||
newBufferFromInt(uint64(e)).base64(),
|
||||
newBuffer(n.Bytes()).base64()), nil
|
||||
}
|
||||
|
||||
func edThumbprintInput(ed ed25519.PublicKey) (string, error) {
|
||||
crv := "Ed25519"
|
||||
if len(ed) > 32 {
|
||||
return "", errors.New("square/go-jose: invalid elliptic key (too large)")
|
||||
}
|
||||
return fmt.Sprintf(edThumbprintTemplate, crv,
|
||||
newFixedSizeBuffer(ed, 32).base64()), nil
|
||||
}
|
||||
|
||||
// Thumbprint computes the JWK Thumbprint of a key using the
|
||||
// indicated hash algorithm.
|
||||
func (k *JSONWebKey) Thumbprint(hash crypto.Hash) ([]byte, error) {
|
||||
var input string
|
||||
var err error
|
||||
switch key := k.Key.(type) {
|
||||
case ed25519.PublicKey:
|
||||
input, err = edThumbprintInput(key)
|
||||
case *ecdsa.PublicKey:
|
||||
input, err = ecThumbprintInput(key.Curve, key.X, key.Y)
|
||||
case *ecdsa.PrivateKey:
|
||||
input, err = ecThumbprintInput(key.Curve, key.X, key.Y)
|
||||
case *rsa.PublicKey:
|
||||
input, err = rsaThumbprintInput(key.N, key.E)
|
||||
case *rsa.PrivateKey:
|
||||
input, err = rsaThumbprintInput(key.N, key.E)
|
||||
case ed25519.PrivateKey:
|
||||
input, err = edThumbprintInput(ed25519.PublicKey(key[32:]))
|
||||
default:
|
||||
return nil, fmt.Errorf("square/go-jose: unknown key type '%s'", reflect.TypeOf(key))
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
h := hash.New()
|
||||
h.Write([]byte(input))
|
||||
return h.Sum(nil), nil
|
||||
}
|
||||
|
||||
// IsPublic returns true if the JWK represents a public key (not symmetric, not private).
|
||||
func (k *JSONWebKey) IsPublic() bool {
|
||||
switch k.Key.(type) {
|
||||
case *ecdsa.PublicKey, *rsa.PublicKey, ed25519.PublicKey:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// Public creates JSONWebKey with corresponding publik key if JWK represents asymmetric private key.
|
||||
func (k *JSONWebKey) Public() JSONWebKey {
|
||||
if k.IsPublic() {
|
||||
return *k
|
||||
}
|
||||
ret := *k
|
||||
switch key := k.Key.(type) {
|
||||
case *ecdsa.PrivateKey:
|
||||
ret.Key = key.Public()
|
||||
case *rsa.PrivateKey:
|
||||
ret.Key = key.Public()
|
||||
case ed25519.PrivateKey:
|
||||
ret.Key = key.Public()
|
||||
default:
|
||||
return JSONWebKey{} // returning invalid key
|
||||
}
|
||||
return ret
|
||||
}
|
||||
|
||||
// Valid checks that the key contains the expected parameters.
|
||||
func (k *JSONWebKey) Valid() bool {
|
||||
if k.Key == nil {
|
||||
return false
|
||||
}
|
||||
switch key := k.Key.(type) {
|
||||
case *ecdsa.PublicKey:
|
||||
if key.Curve == nil || key.X == nil || key.Y == nil {
|
||||
return false
|
||||
}
|
||||
case *ecdsa.PrivateKey:
|
||||
if key.Curve == nil || key.X == nil || key.Y == nil || key.D == nil {
|
||||
return false
|
||||
}
|
||||
case *rsa.PublicKey:
|
||||
if key.N == nil || key.E == 0 {
|
||||
return false
|
||||
}
|
||||
case *rsa.PrivateKey:
|
||||
if key.N == nil || key.E == 0 || key.D == nil || len(key.Primes) < 2 {
|
||||
return false
|
||||
}
|
||||
case ed25519.PublicKey:
|
||||
if len(key) != 32 {
|
||||
return false
|
||||
}
|
||||
case ed25519.PrivateKey:
|
||||
if len(key) != 64 {
|
||||
return false
|
||||
}
|
||||
default:
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) rsaPublicKey() (*rsa.PublicKey, error) {
|
||||
if key.N == nil || key.E == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid RSA key, missing n/e values")
|
||||
}
|
||||
|
||||
return &rsa.PublicKey{
|
||||
N: key.N.bigInt(),
|
||||
E: key.E.toInt(),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func fromEdPublicKey(pub ed25519.PublicKey) *rawJSONWebKey {
|
||||
return &rawJSONWebKey{
|
||||
Kty: "OKP",
|
||||
Crv: "Ed25519",
|
||||
X: newBuffer(pub),
|
||||
}
|
||||
}
|
||||
|
||||
func fromRsaPublicKey(pub *rsa.PublicKey) *rawJSONWebKey {
|
||||
return &rawJSONWebKey{
|
||||
Kty: "RSA",
|
||||
N: newBuffer(pub.N.Bytes()),
|
||||
E: newBufferFromInt(uint64(pub.E)),
|
||||
}
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) ecPublicKey() (*ecdsa.PublicKey, error) {
|
||||
var curve elliptic.Curve
|
||||
switch key.Crv {
|
||||
case "P-256":
|
||||
curve = elliptic.P256()
|
||||
case "P-384":
|
||||
curve = elliptic.P384()
|
||||
case "P-521":
|
||||
curve = elliptic.P521()
|
||||
default:
|
||||
return nil, fmt.Errorf("square/go-jose: unsupported elliptic curve '%s'", key.Crv)
|
||||
}
|
||||
|
||||
if key.X == nil || key.Y == nil {
|
||||
return nil, errors.New("square/go-jose: invalid EC key, missing x/y values")
|
||||
}
|
||||
|
||||
// The length of this octet string MUST be the full size of a coordinate for
|
||||
// the curve specified in the "crv" parameter.
|
||||
// https://tools.ietf.org/html/rfc7518#section-6.2.1.2
|
||||
if curveSize(curve) != len(key.X.data) {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for x")
|
||||
}
|
||||
|
||||
if curveSize(curve) != len(key.Y.data) {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for y")
|
||||
}
|
||||
|
||||
x := key.X.bigInt()
|
||||
y := key.Y.bigInt()
|
||||
|
||||
if !curve.IsOnCurve(x, y) {
|
||||
return nil, errors.New("square/go-jose: invalid EC key, X/Y are not on declared curve")
|
||||
}
|
||||
|
||||
return &ecdsa.PublicKey{
|
||||
Curve: curve,
|
||||
X: x,
|
||||
Y: y,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func fromEcPublicKey(pub *ecdsa.PublicKey) (*rawJSONWebKey, error) {
|
||||
if pub == nil || pub.X == nil || pub.Y == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC key (nil, or X/Y missing)")
|
||||
}
|
||||
|
||||
name, err := curveName(pub.Curve)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
size := curveSize(pub.Curve)
|
||||
|
||||
xBytes := pub.X.Bytes()
|
||||
yBytes := pub.Y.Bytes()
|
||||
|
||||
if len(xBytes) > size || len(yBytes) > size {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC key (X/Y too large)")
|
||||
}
|
||||
|
||||
key := &rawJSONWebKey{
|
||||
Kty: "EC",
|
||||
Crv: name,
|
||||
X: newFixedSizeBuffer(xBytes, size),
|
||||
Y: newFixedSizeBuffer(yBytes, size),
|
||||
}
|
||||
|
||||
return key, nil
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) edPrivateKey() (ed25519.PrivateKey, error) {
|
||||
var missing []string
|
||||
switch {
|
||||
case key.D == nil:
|
||||
missing = append(missing, "D")
|
||||
case key.X == nil:
|
||||
missing = append(missing, "X")
|
||||
}
|
||||
|
||||
if len(missing) > 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid Ed25519 private key, missing %s value(s)", strings.Join(missing, ", "))
|
||||
}
|
||||
|
||||
privateKey := make([]byte, ed25519.PrivateKeySize)
|
||||
copy(privateKey[0:32], key.D.bytes())
|
||||
copy(privateKey[32:], key.X.bytes())
|
||||
rv := ed25519.PrivateKey(privateKey)
|
||||
return rv, nil
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) edPublicKey() (ed25519.PublicKey, error) {
|
||||
if key.X == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid Ed key, missing x value")
|
||||
}
|
||||
publicKey := make([]byte, ed25519.PublicKeySize)
|
||||
copy(publicKey[0:32], key.X.bytes())
|
||||
rv := ed25519.PublicKey(publicKey)
|
||||
return rv, nil
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) rsaPrivateKey() (*rsa.PrivateKey, error) {
|
||||
var missing []string
|
||||
switch {
|
||||
case key.N == nil:
|
||||
missing = append(missing, "N")
|
||||
case key.E == nil:
|
||||
missing = append(missing, "E")
|
||||
case key.D == nil:
|
||||
missing = append(missing, "D")
|
||||
case key.P == nil:
|
||||
missing = append(missing, "P")
|
||||
case key.Q == nil:
|
||||
missing = append(missing, "Q")
|
||||
}
|
||||
|
||||
if len(missing) > 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid RSA private key, missing %s value(s)", strings.Join(missing, ", "))
|
||||
}
|
||||
|
||||
rv := &rsa.PrivateKey{
|
||||
PublicKey: rsa.PublicKey{
|
||||
N: key.N.bigInt(),
|
||||
E: key.E.toInt(),
|
||||
},
|
||||
D: key.D.bigInt(),
|
||||
Primes: []*big.Int{
|
||||
key.P.bigInt(),
|
||||
key.Q.bigInt(),
|
||||
},
|
||||
}
|
||||
|
||||
if key.Dp != nil {
|
||||
rv.Precomputed.Dp = key.Dp.bigInt()
|
||||
}
|
||||
if key.Dq != nil {
|
||||
rv.Precomputed.Dq = key.Dq.bigInt()
|
||||
}
|
||||
if key.Qi != nil {
|
||||
rv.Precomputed.Qinv = key.Qi.bigInt()
|
||||
}
|
||||
|
||||
err := rv.Validate()
|
||||
return rv, err
|
||||
}
|
||||
|
||||
func fromEdPrivateKey(ed ed25519.PrivateKey) (*rawJSONWebKey, error) {
|
||||
raw := fromEdPublicKey(ed25519.PublicKey(ed[32:]))
|
||||
|
||||
raw.D = newBuffer(ed[0:32])
|
||||
return raw, nil
|
||||
}
|
||||
|
||||
func fromRsaPrivateKey(rsa *rsa.PrivateKey) (*rawJSONWebKey, error) {
|
||||
if len(rsa.Primes) != 2 {
|
||||
return nil, ErrUnsupportedKeyType
|
||||
}
|
||||
|
||||
raw := fromRsaPublicKey(&rsa.PublicKey)
|
||||
|
||||
raw.D = newBuffer(rsa.D.Bytes())
|
||||
raw.P = newBuffer(rsa.Primes[0].Bytes())
|
||||
raw.Q = newBuffer(rsa.Primes[1].Bytes())
|
||||
|
||||
if rsa.Precomputed.Dp != nil {
|
||||
raw.Dp = newBuffer(rsa.Precomputed.Dp.Bytes())
|
||||
}
|
||||
if rsa.Precomputed.Dq != nil {
|
||||
raw.Dq = newBuffer(rsa.Precomputed.Dq.Bytes())
|
||||
}
|
||||
if rsa.Precomputed.Qinv != nil {
|
||||
raw.Qi = newBuffer(rsa.Precomputed.Qinv.Bytes())
|
||||
}
|
||||
|
||||
return raw, nil
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) ecPrivateKey() (*ecdsa.PrivateKey, error) {
|
||||
var curve elliptic.Curve
|
||||
switch key.Crv {
|
||||
case "P-256":
|
||||
curve = elliptic.P256()
|
||||
case "P-384":
|
||||
curve = elliptic.P384()
|
||||
case "P-521":
|
||||
curve = elliptic.P521()
|
||||
default:
|
||||
return nil, fmt.Errorf("square/go-jose: unsupported elliptic curve '%s'", key.Crv)
|
||||
}
|
||||
|
||||
if key.X == nil || key.Y == nil || key.D == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key, missing x/y/d values")
|
||||
}
|
||||
|
||||
// The length of this octet string MUST be the full size of a coordinate for
|
||||
// the curve specified in the "crv" parameter.
|
||||
// https://tools.ietf.org/html/rfc7518#section-6.2.1.2
|
||||
if curveSize(curve) != len(key.X.data) {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for x")
|
||||
}
|
||||
|
||||
if curveSize(curve) != len(key.Y.data) {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for y")
|
||||
}
|
||||
|
||||
// https://tools.ietf.org/html/rfc7518#section-6.2.2.1
|
||||
if dSize(curve) != len(key.D.data) {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key, wrong length for d")
|
||||
}
|
||||
|
||||
x := key.X.bigInt()
|
||||
y := key.Y.bigInt()
|
||||
|
||||
if !curve.IsOnCurve(x, y) {
|
||||
return nil, errors.New("square/go-jose: invalid EC key, X/Y are not on declared curve")
|
||||
}
|
||||
|
||||
return &ecdsa.PrivateKey{
|
||||
PublicKey: ecdsa.PublicKey{
|
||||
Curve: curve,
|
||||
X: x,
|
||||
Y: y,
|
||||
},
|
||||
D: key.D.bigInt(),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func fromEcPrivateKey(ec *ecdsa.PrivateKey) (*rawJSONWebKey, error) {
|
||||
raw, err := fromEcPublicKey(&ec.PublicKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if ec.D == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid EC private key")
|
||||
}
|
||||
|
||||
raw.D = newFixedSizeBuffer(ec.D.Bytes(), dSize(ec.PublicKey.Curve))
|
||||
|
||||
return raw, nil
|
||||
}
|
||||
|
||||
// dSize returns the size in octets for the "d" member of an elliptic curve
|
||||
// private key.
|
||||
// The length of this octet string MUST be ceiling(log-base-2(n)/8)
|
||||
// octets (where n is the order of the curve).
|
||||
// https://tools.ietf.org/html/rfc7518#section-6.2.2.1
|
||||
func dSize(curve elliptic.Curve) int {
|
||||
order := curve.Params().P
|
||||
bitLen := order.BitLen()
|
||||
size := bitLen / 8
|
||||
if bitLen%8 != 0 {
|
||||
size = size + 1
|
||||
}
|
||||
return size
|
||||
}
|
||||
|
||||
func fromSymmetricKey(key []byte) (*rawJSONWebKey, error) {
|
||||
return &rawJSONWebKey{
|
||||
Kty: "oct",
|
||||
K: newBuffer(key),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (key rawJSONWebKey) symmetricKey() ([]byte, error) {
|
||||
if key.K == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid OCT (symmetric) key, missing k value")
|
||||
}
|
||||
return key.K.bytes(), nil
|
||||
}
|
||||
321
vendor/gopkg.in/square/go-jose.v2/jws.go
generated
vendored
Normal file
321
vendor/gopkg.in/square/go-jose.v2/jws.go
generated
vendored
Normal file
@ -0,0 +1,321 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// rawJSONWebSignature represents a raw JWS JSON object. Used for parsing/serializing.
|
||||
type rawJSONWebSignature struct {
|
||||
Payload *byteBuffer `json:"payload,omitempty"`
|
||||
Signatures []rawSignatureInfo `json:"signatures,omitempty"`
|
||||
Protected *byteBuffer `json:"protected,omitempty"`
|
||||
Header *rawHeader `json:"header,omitempty"`
|
||||
Signature *byteBuffer `json:"signature,omitempty"`
|
||||
}
|
||||
|
||||
// rawSignatureInfo represents a single JWS signature over the JWS payload and protected header.
|
||||
type rawSignatureInfo struct {
|
||||
Protected *byteBuffer `json:"protected,omitempty"`
|
||||
Header *rawHeader `json:"header,omitempty"`
|
||||
Signature *byteBuffer `json:"signature,omitempty"`
|
||||
}
|
||||
|
||||
// JSONWebSignature represents a signed JWS object after parsing.
|
||||
type JSONWebSignature struct {
|
||||
payload []byte
|
||||
// Signatures attached to this object (may be more than one for multi-sig).
|
||||
// Be careful about accessing these directly, prefer to use Verify() or
|
||||
// VerifyMulti() to ensure that the data you're getting is verified.
|
||||
Signatures []Signature
|
||||
}
|
||||
|
||||
// Signature represents a single signature over the JWS payload and protected header.
|
||||
type Signature struct {
|
||||
// Merged header fields. Contains both protected and unprotected header
|
||||
// values. Prefer using Protected and Unprotected fields instead of this.
|
||||
// Values in this header may or may not have been signed and in general
|
||||
// should not be trusted.
|
||||
Header Header
|
||||
|
||||
// Protected header. Values in this header were signed and
|
||||
// will be verified as part of the signature verification process.
|
||||
Protected Header
|
||||
|
||||
// Unprotected header. Values in this header were not signed
|
||||
// and in general should not be trusted.
|
||||
Unprotected Header
|
||||
|
||||
// The actual signature value
|
||||
Signature []byte
|
||||
|
||||
protected *rawHeader
|
||||
header *rawHeader
|
||||
original *rawSignatureInfo
|
||||
}
|
||||
|
||||
// ParseSigned parses a signed message in compact or full serialization format.
|
||||
func ParseSigned(input string) (*JSONWebSignature, error) {
|
||||
input = stripWhitespace(input)
|
||||
if strings.HasPrefix(input, "{") {
|
||||
return parseSignedFull(input)
|
||||
}
|
||||
|
||||
return parseSignedCompact(input)
|
||||
}
|
||||
|
||||
// Get a header value
|
||||
func (sig Signature) mergedHeaders() rawHeader {
|
||||
out := rawHeader{}
|
||||
out.merge(sig.protected)
|
||||
out.merge(sig.header)
|
||||
return out
|
||||
}
|
||||
|
||||
// Compute data to be signed
|
||||
func (obj JSONWebSignature) computeAuthData(payload []byte, signature *Signature) []byte {
|
||||
var serializedProtected string
|
||||
|
||||
if signature.original != nil && signature.original.Protected != nil {
|
||||
serializedProtected = signature.original.Protected.base64()
|
||||
} else if signature.protected != nil {
|
||||
serializedProtected = base64.RawURLEncoding.EncodeToString(mustSerializeJSON(signature.protected))
|
||||
} else {
|
||||
serializedProtected = ""
|
||||
}
|
||||
|
||||
return []byte(fmt.Sprintf("%s.%s",
|
||||
serializedProtected,
|
||||
base64.RawURLEncoding.EncodeToString(payload)))
|
||||
}
|
||||
|
||||
// parseSignedFull parses a message in full format.
|
||||
func parseSignedFull(input string) (*JSONWebSignature, error) {
|
||||
var parsed rawJSONWebSignature
|
||||
err := json.Unmarshal([]byte(input), &parsed)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return parsed.sanitized()
|
||||
}
|
||||
|
||||
// sanitized produces a cleaned-up JWS object from the raw JSON.
|
||||
func (parsed *rawJSONWebSignature) sanitized() (*JSONWebSignature, error) {
|
||||
if parsed.Payload == nil {
|
||||
return nil, fmt.Errorf("square/go-jose: missing payload in JWS message")
|
||||
}
|
||||
|
||||
obj := &JSONWebSignature{
|
||||
payload: parsed.Payload.bytes(),
|
||||
Signatures: make([]Signature, len(parsed.Signatures)),
|
||||
}
|
||||
|
||||
if len(parsed.Signatures) == 0 {
|
||||
// No signatures array, must be flattened serialization
|
||||
signature := Signature{}
|
||||
if parsed.Protected != nil && len(parsed.Protected.bytes()) > 0 {
|
||||
signature.protected = &rawHeader{}
|
||||
err := json.Unmarshal(parsed.Protected.bytes(), signature.protected)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// Check that there is not a nonce in the unprotected header
|
||||
if parsed.Header != nil && parsed.Header.getNonce() != "" {
|
||||
return nil, ErrUnprotectedNonce
|
||||
}
|
||||
|
||||
signature.header = parsed.Header
|
||||
signature.Signature = parsed.Signature.bytes()
|
||||
// Make a fake "original" rawSignatureInfo to store the unprocessed
|
||||
// Protected header. This is necessary because the Protected header can
|
||||
// contain arbitrary fields not registered as part of the spec. See
|
||||
// https://tools.ietf.org/html/draft-ietf-jose-json-web-signature-41#section-4
|
||||
// If we unmarshal Protected into a rawHeader with its explicit list of fields,
|
||||
// we cannot marshal losslessly. So we have to keep around the original bytes.
|
||||
// This is used in computeAuthData, which will first attempt to use
|
||||
// the original bytes of a protected header, and fall back on marshaling the
|
||||
// header struct only if those bytes are not available.
|
||||
signature.original = &rawSignatureInfo{
|
||||
Protected: parsed.Protected,
|
||||
Header: parsed.Header,
|
||||
Signature: parsed.Signature,
|
||||
}
|
||||
|
||||
var err error
|
||||
signature.Header, err = signature.mergedHeaders().sanitized()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if signature.header != nil {
|
||||
signature.Unprotected, err = signature.header.sanitized()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if signature.protected != nil {
|
||||
signature.Protected, err = signature.protected.sanitized()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// As per RFC 7515 Section 4.1.3, only public keys are allowed to be embedded.
|
||||
jwk := signature.Header.JSONWebKey
|
||||
if jwk != nil && (!jwk.Valid() || !jwk.IsPublic()) {
|
||||
return nil, errors.New("square/go-jose: invalid embedded jwk, must be public key")
|
||||
}
|
||||
|
||||
obj.Signatures = append(obj.Signatures, signature)
|
||||
}
|
||||
|
||||
for i, sig := range parsed.Signatures {
|
||||
if sig.Protected != nil && len(sig.Protected.bytes()) > 0 {
|
||||
obj.Signatures[i].protected = &rawHeader{}
|
||||
err := json.Unmarshal(sig.Protected.bytes(), obj.Signatures[i].protected)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// Check that there is not a nonce in the unprotected header
|
||||
if sig.Header != nil && sig.Header.getNonce() != "" {
|
||||
return nil, ErrUnprotectedNonce
|
||||
}
|
||||
|
||||
var err error
|
||||
obj.Signatures[i].Header, err = obj.Signatures[i].mergedHeaders().sanitized()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if obj.Signatures[i].header != nil {
|
||||
obj.Signatures[i].Unprotected, err = obj.Signatures[i].header.sanitized()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if obj.Signatures[i].protected != nil {
|
||||
obj.Signatures[i].Protected, err = obj.Signatures[i].protected.sanitized()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
obj.Signatures[i].Signature = sig.Signature.bytes()
|
||||
|
||||
// As per RFC 7515 Section 4.1.3, only public keys are allowed to be embedded.
|
||||
jwk := obj.Signatures[i].Header.JSONWebKey
|
||||
if jwk != nil && (!jwk.Valid() || !jwk.IsPublic()) {
|
||||
return nil, errors.New("square/go-jose: invalid embedded jwk, must be public key")
|
||||
}
|
||||
|
||||
// Copy value of sig
|
||||
original := sig
|
||||
|
||||
obj.Signatures[i].header = sig.Header
|
||||
obj.Signatures[i].original = &original
|
||||
}
|
||||
|
||||
return obj, nil
|
||||
}
|
||||
|
||||
// parseSignedCompact parses a message in compact format.
|
||||
func parseSignedCompact(input string) (*JSONWebSignature, error) {
|
||||
parts := strings.Split(input, ".")
|
||||
if len(parts) != 3 {
|
||||
return nil, fmt.Errorf("square/go-jose: compact JWS format must have three parts")
|
||||
}
|
||||
|
||||
rawProtected, err := base64.RawURLEncoding.DecodeString(parts[0])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
payload, err := base64.RawURLEncoding.DecodeString(parts[1])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
signature, err := base64.RawURLEncoding.DecodeString(parts[2])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
raw := &rawJSONWebSignature{
|
||||
Payload: newBuffer(payload),
|
||||
Protected: newBuffer(rawProtected),
|
||||
Signature: newBuffer(signature),
|
||||
}
|
||||
return raw.sanitized()
|
||||
}
|
||||
|
||||
// CompactSerialize serializes an object using the compact serialization format.
|
||||
func (obj JSONWebSignature) CompactSerialize() (string, error) {
|
||||
if len(obj.Signatures) != 1 || obj.Signatures[0].header != nil || obj.Signatures[0].protected == nil {
|
||||
return "", ErrNotSupported
|
||||
}
|
||||
|
||||
serializedProtected := mustSerializeJSON(obj.Signatures[0].protected)
|
||||
|
||||
return fmt.Sprintf(
|
||||
"%s.%s.%s",
|
||||
base64.RawURLEncoding.EncodeToString(serializedProtected),
|
||||
base64.RawURLEncoding.EncodeToString(obj.payload),
|
||||
base64.RawURLEncoding.EncodeToString(obj.Signatures[0].Signature)), nil
|
||||
}
|
||||
|
||||
// FullSerialize serializes an object using the full JSON serialization format.
|
||||
func (obj JSONWebSignature) FullSerialize() string {
|
||||
raw := rawJSONWebSignature{
|
||||
Payload: newBuffer(obj.payload),
|
||||
}
|
||||
|
||||
if len(obj.Signatures) == 1 {
|
||||
if obj.Signatures[0].protected != nil {
|
||||
serializedProtected := mustSerializeJSON(obj.Signatures[0].protected)
|
||||
raw.Protected = newBuffer(serializedProtected)
|
||||
}
|
||||
raw.Header = obj.Signatures[0].header
|
||||
raw.Signature = newBuffer(obj.Signatures[0].Signature)
|
||||
} else {
|
||||
raw.Signatures = make([]rawSignatureInfo, len(obj.Signatures))
|
||||
for i, signature := range obj.Signatures {
|
||||
raw.Signatures[i] = rawSignatureInfo{
|
||||
Header: signature.header,
|
||||
Signature: newBuffer(signature.Signature),
|
||||
}
|
||||
|
||||
if signature.protected != nil {
|
||||
raw.Signatures[i].Protected = newBuffer(mustSerializeJSON(signature.protected))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return string(mustSerializeJSON(raw))
|
||||
}
|
||||
83
vendor/gopkg.in/square/go-jose.v2/opaque.go
generated
vendored
Normal file
83
vendor/gopkg.in/square/go-jose.v2/opaque.go
generated
vendored
Normal file
@ -0,0 +1,83 @@
|
||||
/*-
|
||||
* Copyright 2018 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
// OpaqueSigner is an interface that supports signing payloads with opaque
|
||||
// private key(s). Private key operations preformed by implementors may, for
|
||||
// example, occur in a hardware module. An OpaqueSigner may rotate signing keys
|
||||
// transparently to the user of this interface.
|
||||
type OpaqueSigner interface {
|
||||
// Public returns the public key of the current signing key.
|
||||
Public() *JSONWebKey
|
||||
// Algs returns a list of supported signing algorithms.
|
||||
Algs() []SignatureAlgorithm
|
||||
// SignPayload signs a payload with the current signing key using the given
|
||||
// algorithm.
|
||||
SignPayload(payload []byte, alg SignatureAlgorithm) ([]byte, error)
|
||||
}
|
||||
|
||||
type opaqueSigner struct {
|
||||
signer OpaqueSigner
|
||||
}
|
||||
|
||||
func newOpaqueSigner(alg SignatureAlgorithm, signer OpaqueSigner) (recipientSigInfo, error) {
|
||||
var algSupported bool
|
||||
for _, salg := range signer.Algs() {
|
||||
if alg == salg {
|
||||
algSupported = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !algSupported {
|
||||
return recipientSigInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
return recipientSigInfo{
|
||||
sigAlg: alg,
|
||||
publicKey: signer.Public,
|
||||
signer: &opaqueSigner{
|
||||
signer: signer,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (o *opaqueSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
|
||||
out, err := o.signer.SignPayload(payload, alg)
|
||||
if err != nil {
|
||||
return Signature{}, err
|
||||
}
|
||||
|
||||
return Signature{
|
||||
Signature: out,
|
||||
protected: &rawHeader{},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// OpaqueVerifier is an interface that supports verifying payloads with opaque
|
||||
// public key(s). An OpaqueSigner may rotate signing keys transparently to the
|
||||
// user of this interface.
|
||||
type OpaqueVerifier interface {
|
||||
VerifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error
|
||||
}
|
||||
|
||||
type opaqueVerifier struct {
|
||||
verifier OpaqueVerifier
|
||||
}
|
||||
|
||||
func (o *opaqueVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
|
||||
return o.verifier.VerifyPayload(payload, signature, alg)
|
||||
}
|
||||
499
vendor/gopkg.in/square/go-jose.v2/shared.go
generated
vendored
Normal file
499
vendor/gopkg.in/square/go-jose.v2/shared.go
generated
vendored
Normal file
@ -0,0 +1,499 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"crypto/elliptic"
|
||||
"crypto/x509"
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// KeyAlgorithm represents a key management algorithm.
|
||||
type KeyAlgorithm string
|
||||
|
||||
// SignatureAlgorithm represents a signature (or MAC) algorithm.
|
||||
type SignatureAlgorithm string
|
||||
|
||||
// ContentEncryption represents a content encryption algorithm.
|
||||
type ContentEncryption string
|
||||
|
||||
// CompressionAlgorithm represents an algorithm used for plaintext compression.
|
||||
type CompressionAlgorithm string
|
||||
|
||||
// ContentType represents type of the contained data.
|
||||
type ContentType string
|
||||
|
||||
var (
|
||||
// ErrCryptoFailure represents an error in cryptographic primitive. This
|
||||
// occurs when, for example, a message had an invalid authentication tag or
|
||||
// could not be decrypted.
|
||||
ErrCryptoFailure = errors.New("square/go-jose: error in cryptographic primitive")
|
||||
|
||||
// ErrUnsupportedAlgorithm indicates that a selected algorithm is not
|
||||
// supported. This occurs when trying to instantiate an encrypter for an
|
||||
// algorithm that is not yet implemented.
|
||||
ErrUnsupportedAlgorithm = errors.New("square/go-jose: unknown/unsupported algorithm")
|
||||
|
||||
// ErrUnsupportedKeyType indicates that the given key type/format is not
|
||||
// supported. This occurs when trying to instantiate an encrypter and passing
|
||||
// it a key of an unrecognized type or with unsupported parameters, such as
|
||||
// an RSA private key with more than two primes.
|
||||
ErrUnsupportedKeyType = errors.New("square/go-jose: unsupported key type/format")
|
||||
|
||||
// ErrInvalidKeySize indicates that the given key is not the correct size
|
||||
// for the selected algorithm. This can occur, for example, when trying to
|
||||
// encrypt with AES-256 but passing only a 128-bit key as input.
|
||||
ErrInvalidKeySize = errors.New("square/go-jose: invalid key size for algorithm")
|
||||
|
||||
// ErrNotSupported serialization of object is not supported. This occurs when
|
||||
// trying to compact-serialize an object which can't be represented in
|
||||
// compact form.
|
||||
ErrNotSupported = errors.New("square/go-jose: compact serialization not supported for object")
|
||||
|
||||
// ErrUnprotectedNonce indicates that while parsing a JWS or JWE object, a
|
||||
// nonce header parameter was included in an unprotected header object.
|
||||
ErrUnprotectedNonce = errors.New("square/go-jose: Nonce parameter included in unprotected header")
|
||||
)
|
||||
|
||||
// Key management algorithms
|
||||
const (
|
||||
ED25519 = KeyAlgorithm("ED25519")
|
||||
RSA1_5 = KeyAlgorithm("RSA1_5") // RSA-PKCS1v1.5
|
||||
RSA_OAEP = KeyAlgorithm("RSA-OAEP") // RSA-OAEP-SHA1
|
||||
RSA_OAEP_256 = KeyAlgorithm("RSA-OAEP-256") // RSA-OAEP-SHA256
|
||||
A128KW = KeyAlgorithm("A128KW") // AES key wrap (128)
|
||||
A192KW = KeyAlgorithm("A192KW") // AES key wrap (192)
|
||||
A256KW = KeyAlgorithm("A256KW") // AES key wrap (256)
|
||||
DIRECT = KeyAlgorithm("dir") // Direct encryption
|
||||
ECDH_ES = KeyAlgorithm("ECDH-ES") // ECDH-ES
|
||||
ECDH_ES_A128KW = KeyAlgorithm("ECDH-ES+A128KW") // ECDH-ES + AES key wrap (128)
|
||||
ECDH_ES_A192KW = KeyAlgorithm("ECDH-ES+A192KW") // ECDH-ES + AES key wrap (192)
|
||||
ECDH_ES_A256KW = KeyAlgorithm("ECDH-ES+A256KW") // ECDH-ES + AES key wrap (256)
|
||||
A128GCMKW = KeyAlgorithm("A128GCMKW") // AES-GCM key wrap (128)
|
||||
A192GCMKW = KeyAlgorithm("A192GCMKW") // AES-GCM key wrap (192)
|
||||
A256GCMKW = KeyAlgorithm("A256GCMKW") // AES-GCM key wrap (256)
|
||||
PBES2_HS256_A128KW = KeyAlgorithm("PBES2-HS256+A128KW") // PBES2 + HMAC-SHA256 + AES key wrap (128)
|
||||
PBES2_HS384_A192KW = KeyAlgorithm("PBES2-HS384+A192KW") // PBES2 + HMAC-SHA384 + AES key wrap (192)
|
||||
PBES2_HS512_A256KW = KeyAlgorithm("PBES2-HS512+A256KW") // PBES2 + HMAC-SHA512 + AES key wrap (256)
|
||||
)
|
||||
|
||||
// Signature algorithms
|
||||
const (
|
||||
EdDSA = SignatureAlgorithm("EdDSA")
|
||||
HS256 = SignatureAlgorithm("HS256") // HMAC using SHA-256
|
||||
HS384 = SignatureAlgorithm("HS384") // HMAC using SHA-384
|
||||
HS512 = SignatureAlgorithm("HS512") // HMAC using SHA-512
|
||||
RS256 = SignatureAlgorithm("RS256") // RSASSA-PKCS-v1.5 using SHA-256
|
||||
RS384 = SignatureAlgorithm("RS384") // RSASSA-PKCS-v1.5 using SHA-384
|
||||
RS512 = SignatureAlgorithm("RS512") // RSASSA-PKCS-v1.5 using SHA-512
|
||||
ES256 = SignatureAlgorithm("ES256") // ECDSA using P-256 and SHA-256
|
||||
ES384 = SignatureAlgorithm("ES384") // ECDSA using P-384 and SHA-384
|
||||
ES512 = SignatureAlgorithm("ES512") // ECDSA using P-521 and SHA-512
|
||||
PS256 = SignatureAlgorithm("PS256") // RSASSA-PSS using SHA256 and MGF1-SHA256
|
||||
PS384 = SignatureAlgorithm("PS384") // RSASSA-PSS using SHA384 and MGF1-SHA384
|
||||
PS512 = SignatureAlgorithm("PS512") // RSASSA-PSS using SHA512 and MGF1-SHA512
|
||||
)
|
||||
|
||||
// Content encryption algorithms
|
||||
const (
|
||||
A128CBC_HS256 = ContentEncryption("A128CBC-HS256") // AES-CBC + HMAC-SHA256 (128)
|
||||
A192CBC_HS384 = ContentEncryption("A192CBC-HS384") // AES-CBC + HMAC-SHA384 (192)
|
||||
A256CBC_HS512 = ContentEncryption("A256CBC-HS512") // AES-CBC + HMAC-SHA512 (256)
|
||||
A128GCM = ContentEncryption("A128GCM") // AES-GCM (128)
|
||||
A192GCM = ContentEncryption("A192GCM") // AES-GCM (192)
|
||||
A256GCM = ContentEncryption("A256GCM") // AES-GCM (256)
|
||||
)
|
||||
|
||||
// Compression algorithms
|
||||
const (
|
||||
NONE = CompressionAlgorithm("") // No compression
|
||||
DEFLATE = CompressionAlgorithm("DEF") // DEFLATE (RFC 1951)
|
||||
)
|
||||
|
||||
// A key in the protected header of a JWS object. Use of the Header...
|
||||
// constants is preferred to enhance type safety.
|
||||
type HeaderKey string
|
||||
|
||||
const (
|
||||
HeaderType HeaderKey = "typ" // string
|
||||
HeaderContentType = "cty" // string
|
||||
|
||||
// These are set by go-jose and shouldn't need to be set by consumers of the
|
||||
// library.
|
||||
headerAlgorithm = "alg" // string
|
||||
headerEncryption = "enc" // ContentEncryption
|
||||
headerCompression = "zip" // CompressionAlgorithm
|
||||
headerCritical = "crit" // []string
|
||||
|
||||
headerAPU = "apu" // *byteBuffer
|
||||
headerAPV = "apv" // *byteBuffer
|
||||
headerEPK = "epk" // *JSONWebKey
|
||||
headerIV = "iv" // *byteBuffer
|
||||
headerTag = "tag" // *byteBuffer
|
||||
headerX5c = "x5c" // []*x509.Certificate
|
||||
|
||||
headerJWK = "jwk" // *JSONWebKey
|
||||
headerKeyID = "kid" // string
|
||||
headerNonce = "nonce" // string
|
||||
|
||||
headerP2C = "p2c" // *byteBuffer (int)
|
||||
headerP2S = "p2s" // *byteBuffer ([]byte)
|
||||
|
||||
)
|
||||
|
||||
// rawHeader represents the JOSE header for JWE/JWS objects (used for parsing).
|
||||
//
|
||||
// The decoding of the constituent items is deferred because we want to marshal
|
||||
// some members into particular structs rather than generic maps, but at the
|
||||
// same time we need to receive any extra fields unhandled by this library to
|
||||
// pass through to consuming code in case it wants to examine them.
|
||||
type rawHeader map[HeaderKey]*json.RawMessage
|
||||
|
||||
// Header represents the read-only JOSE header for JWE/JWS objects.
|
||||
type Header struct {
|
||||
KeyID string
|
||||
JSONWebKey *JSONWebKey
|
||||
Algorithm string
|
||||
Nonce string
|
||||
|
||||
// Unverified certificate chain parsed from x5c header.
|
||||
certificates []*x509.Certificate
|
||||
|
||||
// Any headers not recognised above get unmarshaled
|
||||
// from JSON in a generic manner and placed in this map.
|
||||
ExtraHeaders map[HeaderKey]interface{}
|
||||
}
|
||||
|
||||
// Certificates verifies & returns the certificate chain present
|
||||
// in the x5c header field of a message, if one was present. Returns
|
||||
// an error if there was no x5c header present or the chain could
|
||||
// not be validated with the given verify options.
|
||||
func (h Header) Certificates(opts x509.VerifyOptions) ([][]*x509.Certificate, error) {
|
||||
if len(h.certificates) == 0 {
|
||||
return nil, errors.New("square/go-jose: no x5c header present in message")
|
||||
}
|
||||
|
||||
leaf := h.certificates[0]
|
||||
if opts.Intermediates == nil {
|
||||
opts.Intermediates = x509.NewCertPool()
|
||||
for _, intermediate := range h.certificates[1:] {
|
||||
opts.Intermediates.AddCert(intermediate)
|
||||
}
|
||||
}
|
||||
|
||||
return leaf.Verify(opts)
|
||||
}
|
||||
|
||||
func (parsed rawHeader) set(k HeaderKey, v interface{}) error {
|
||||
b, err := json.Marshal(v)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
parsed[k] = makeRawMessage(b)
|
||||
return nil
|
||||
}
|
||||
|
||||
// getString gets a string from the raw JSON, defaulting to "".
|
||||
func (parsed rawHeader) getString(k HeaderKey) string {
|
||||
v, ok := parsed[k]
|
||||
if !ok || v == nil {
|
||||
return ""
|
||||
}
|
||||
var s string
|
||||
err := json.Unmarshal(*v, &s)
|
||||
if err != nil {
|
||||
return ""
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// getByteBuffer gets a byte buffer from the raw JSON. Returns (nil, nil) if
|
||||
// not specified.
|
||||
func (parsed rawHeader) getByteBuffer(k HeaderKey) (*byteBuffer, error) {
|
||||
v := parsed[k]
|
||||
if v == nil {
|
||||
return nil, nil
|
||||
}
|
||||
var bb *byteBuffer
|
||||
err := json.Unmarshal(*v, &bb)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return bb, nil
|
||||
}
|
||||
|
||||
// getAlgorithm extracts parsed "alg" from the raw JSON as a KeyAlgorithm.
|
||||
func (parsed rawHeader) getAlgorithm() KeyAlgorithm {
|
||||
return KeyAlgorithm(parsed.getString(headerAlgorithm))
|
||||
}
|
||||
|
||||
// getSignatureAlgorithm extracts parsed "alg" from the raw JSON as a SignatureAlgorithm.
|
||||
func (parsed rawHeader) getSignatureAlgorithm() SignatureAlgorithm {
|
||||
return SignatureAlgorithm(parsed.getString(headerAlgorithm))
|
||||
}
|
||||
|
||||
// getEncryption extracts parsed "enc" from the raw JSON.
|
||||
func (parsed rawHeader) getEncryption() ContentEncryption {
|
||||
return ContentEncryption(parsed.getString(headerEncryption))
|
||||
}
|
||||
|
||||
// getCompression extracts parsed "zip" from the raw JSON.
|
||||
func (parsed rawHeader) getCompression() CompressionAlgorithm {
|
||||
return CompressionAlgorithm(parsed.getString(headerCompression))
|
||||
}
|
||||
|
||||
func (parsed rawHeader) getNonce() string {
|
||||
return parsed.getString(headerNonce)
|
||||
}
|
||||
|
||||
// getEPK extracts parsed "epk" from the raw JSON.
|
||||
func (parsed rawHeader) getEPK() (*JSONWebKey, error) {
|
||||
v := parsed[headerEPK]
|
||||
if v == nil {
|
||||
return nil, nil
|
||||
}
|
||||
var epk *JSONWebKey
|
||||
err := json.Unmarshal(*v, &epk)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return epk, nil
|
||||
}
|
||||
|
||||
// getAPU extracts parsed "apu" from the raw JSON.
|
||||
func (parsed rawHeader) getAPU() (*byteBuffer, error) {
|
||||
return parsed.getByteBuffer(headerAPU)
|
||||
}
|
||||
|
||||
// getAPV extracts parsed "apv" from the raw JSON.
|
||||
func (parsed rawHeader) getAPV() (*byteBuffer, error) {
|
||||
return parsed.getByteBuffer(headerAPV)
|
||||
}
|
||||
|
||||
// getIV extracts parsed "iv" frpom the raw JSON.
|
||||
func (parsed rawHeader) getIV() (*byteBuffer, error) {
|
||||
return parsed.getByteBuffer(headerIV)
|
||||
}
|
||||
|
||||
// getTag extracts parsed "tag" frpom the raw JSON.
|
||||
func (parsed rawHeader) getTag() (*byteBuffer, error) {
|
||||
return parsed.getByteBuffer(headerTag)
|
||||
}
|
||||
|
||||
// getJWK extracts parsed "jwk" from the raw JSON.
|
||||
func (parsed rawHeader) getJWK() (*JSONWebKey, error) {
|
||||
v := parsed[headerJWK]
|
||||
if v == nil {
|
||||
return nil, nil
|
||||
}
|
||||
var jwk *JSONWebKey
|
||||
err := json.Unmarshal(*v, &jwk)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return jwk, nil
|
||||
}
|
||||
|
||||
// getCritical extracts parsed "crit" from the raw JSON. If omitted, it
|
||||
// returns an empty slice.
|
||||
func (parsed rawHeader) getCritical() ([]string, error) {
|
||||
v := parsed[headerCritical]
|
||||
if v == nil {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
var q []string
|
||||
err := json.Unmarshal(*v, &q)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return q, nil
|
||||
}
|
||||
|
||||
// getS2C extracts parsed "p2c" from the raw JSON.
|
||||
func (parsed rawHeader) getP2C() (int, error) {
|
||||
v := parsed[headerP2C]
|
||||
if v == nil {
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
var p2c int
|
||||
err := json.Unmarshal(*v, &p2c)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
return p2c, nil
|
||||
}
|
||||
|
||||
// getS2S extracts parsed "p2s" from the raw JSON.
|
||||
func (parsed rawHeader) getP2S() (*byteBuffer, error) {
|
||||
return parsed.getByteBuffer(headerP2S)
|
||||
}
|
||||
|
||||
// sanitized produces a cleaned-up header object from the raw JSON.
|
||||
func (parsed rawHeader) sanitized() (h Header, err error) {
|
||||
for k, v := range parsed {
|
||||
if v == nil {
|
||||
continue
|
||||
}
|
||||
switch k {
|
||||
case headerJWK:
|
||||
var jwk *JSONWebKey
|
||||
err = json.Unmarshal(*v, &jwk)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal JWK: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
h.JSONWebKey = jwk
|
||||
case headerKeyID:
|
||||
var s string
|
||||
err = json.Unmarshal(*v, &s)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal key ID: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
h.KeyID = s
|
||||
case headerAlgorithm:
|
||||
var s string
|
||||
err = json.Unmarshal(*v, &s)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal algorithm: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
h.Algorithm = s
|
||||
case headerNonce:
|
||||
var s string
|
||||
err = json.Unmarshal(*v, &s)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal nonce: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
h.Nonce = s
|
||||
case headerX5c:
|
||||
c := []string{}
|
||||
err = json.Unmarshal(*v, &c)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal x5c header: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
h.certificates, err = parseCertificateChain(c)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal x5c header: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
default:
|
||||
if h.ExtraHeaders == nil {
|
||||
h.ExtraHeaders = map[HeaderKey]interface{}{}
|
||||
}
|
||||
var v2 interface{}
|
||||
err = json.Unmarshal(*v, &v2)
|
||||
if err != nil {
|
||||
err = fmt.Errorf("failed to unmarshal value: %v: %#v", err, string(*v))
|
||||
return
|
||||
}
|
||||
h.ExtraHeaders[k] = v2
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func parseCertificateChain(chain []string) ([]*x509.Certificate, error) {
|
||||
out := make([]*x509.Certificate, len(chain))
|
||||
for i, cert := range chain {
|
||||
raw, err := base64.StdEncoding.DecodeString(cert)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
out[i], err = x509.ParseCertificate(raw)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
func (dst rawHeader) isSet(k HeaderKey) bool {
|
||||
dvr := dst[k]
|
||||
if dvr == nil {
|
||||
return false
|
||||
}
|
||||
|
||||
var dv interface{}
|
||||
err := json.Unmarshal(*dvr, &dv)
|
||||
if err != nil {
|
||||
return true
|
||||
}
|
||||
|
||||
if dvStr, ok := dv.(string); ok {
|
||||
return dvStr != ""
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// Merge headers from src into dst, giving precedence to headers from l.
|
||||
func (dst rawHeader) merge(src *rawHeader) {
|
||||
if src == nil {
|
||||
return
|
||||
}
|
||||
|
||||
for k, v := range *src {
|
||||
if dst.isSet(k) {
|
||||
continue
|
||||
}
|
||||
|
||||
dst[k] = v
|
||||
}
|
||||
}
|
||||
|
||||
// Get JOSE name of curve
|
||||
func curveName(crv elliptic.Curve) (string, error) {
|
||||
switch crv {
|
||||
case elliptic.P256():
|
||||
return "P-256", nil
|
||||
case elliptic.P384():
|
||||
return "P-384", nil
|
||||
case elliptic.P521():
|
||||
return "P-521", nil
|
||||
default:
|
||||
return "", fmt.Errorf("square/go-jose: unsupported/unknown elliptic curve")
|
||||
}
|
||||
}
|
||||
|
||||
// Get size of curve in bytes
|
||||
func curveSize(crv elliptic.Curve) int {
|
||||
bits := crv.Params().BitSize
|
||||
|
||||
div := bits / 8
|
||||
mod := bits % 8
|
||||
|
||||
if mod == 0 {
|
||||
return div
|
||||
}
|
||||
|
||||
return div + 1
|
||||
}
|
||||
|
||||
func makeRawMessage(b []byte) *json.RawMessage {
|
||||
rm := json.RawMessage(b)
|
||||
return &rm
|
||||
}
|
||||
389
vendor/gopkg.in/square/go-jose.v2/signing.go
generated
vendored
Normal file
389
vendor/gopkg.in/square/go-jose.v2/signing.go
generated
vendored
Normal file
@ -0,0 +1,389 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"crypto/ecdsa"
|
||||
"crypto/rsa"
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"golang.org/x/crypto/ed25519"
|
||||
|
||||
"gopkg.in/square/go-jose.v2/json"
|
||||
)
|
||||
|
||||
// NonceSource represents a source of random nonces to go into JWS objects
|
||||
type NonceSource interface {
|
||||
Nonce() (string, error)
|
||||
}
|
||||
|
||||
// Signer represents a signer which takes a payload and produces a signed JWS object.
|
||||
type Signer interface {
|
||||
Sign(payload []byte) (*JSONWebSignature, error)
|
||||
Options() SignerOptions
|
||||
}
|
||||
|
||||
// SigningKey represents an algorithm/key used to sign a message.
|
||||
type SigningKey struct {
|
||||
Algorithm SignatureAlgorithm
|
||||
Key interface{}
|
||||
}
|
||||
|
||||
// SignerOptions represents options that can be set when creating signers.
|
||||
type SignerOptions struct {
|
||||
NonceSource NonceSource
|
||||
EmbedJWK bool
|
||||
|
||||
// Optional map of additional keys to be inserted into the protected header
|
||||
// of a JWS object. Some specifications which make use of JWS like to insert
|
||||
// additional values here. All values must be JSON-serializable.
|
||||
ExtraHeaders map[HeaderKey]interface{}
|
||||
}
|
||||
|
||||
// WithHeader adds an arbitrary value to the ExtraHeaders map, initializing it
|
||||
// if necessary. It returns itself and so can be used in a fluent style.
|
||||
func (so *SignerOptions) WithHeader(k HeaderKey, v interface{}) *SignerOptions {
|
||||
if so.ExtraHeaders == nil {
|
||||
so.ExtraHeaders = map[HeaderKey]interface{}{}
|
||||
}
|
||||
so.ExtraHeaders[k] = v
|
||||
return so
|
||||
}
|
||||
|
||||
// WithContentType adds a content type ("cty") header and returns the updated
|
||||
// SignerOptions.
|
||||
func (so *SignerOptions) WithContentType(contentType ContentType) *SignerOptions {
|
||||
return so.WithHeader(HeaderContentType, contentType)
|
||||
}
|
||||
|
||||
// WithType adds a type ("typ") header and returns the updated SignerOptions.
|
||||
func (so *SignerOptions) WithType(typ ContentType) *SignerOptions {
|
||||
return so.WithHeader(HeaderType, typ)
|
||||
}
|
||||
|
||||
type payloadSigner interface {
|
||||
signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error)
|
||||
}
|
||||
|
||||
type payloadVerifier interface {
|
||||
verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error
|
||||
}
|
||||
|
||||
type genericSigner struct {
|
||||
recipients []recipientSigInfo
|
||||
nonceSource NonceSource
|
||||
embedJWK bool
|
||||
extraHeaders map[HeaderKey]interface{}
|
||||
}
|
||||
|
||||
type recipientSigInfo struct {
|
||||
sigAlg SignatureAlgorithm
|
||||
publicKey func() *JSONWebKey
|
||||
signer payloadSigner
|
||||
}
|
||||
|
||||
func staticPublicKey(jwk *JSONWebKey) func() *JSONWebKey {
|
||||
return func() *JSONWebKey {
|
||||
return jwk
|
||||
}
|
||||
}
|
||||
|
||||
// NewSigner creates an appropriate signer based on the key type
|
||||
func NewSigner(sig SigningKey, opts *SignerOptions) (Signer, error) {
|
||||
return NewMultiSigner([]SigningKey{sig}, opts)
|
||||
}
|
||||
|
||||
// NewMultiSigner creates a signer for multiple recipients
|
||||
func NewMultiSigner(sigs []SigningKey, opts *SignerOptions) (Signer, error) {
|
||||
signer := &genericSigner{recipients: []recipientSigInfo{}}
|
||||
|
||||
if opts != nil {
|
||||
signer.nonceSource = opts.NonceSource
|
||||
signer.embedJWK = opts.EmbedJWK
|
||||
signer.extraHeaders = opts.ExtraHeaders
|
||||
}
|
||||
|
||||
for _, sig := range sigs {
|
||||
err := signer.addRecipient(sig.Algorithm, sig.Key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return signer, nil
|
||||
}
|
||||
|
||||
// newVerifier creates a verifier based on the key type
|
||||
func newVerifier(verificationKey interface{}) (payloadVerifier, error) {
|
||||
switch verificationKey := verificationKey.(type) {
|
||||
case ed25519.PublicKey:
|
||||
return &edEncrypterVerifier{
|
||||
publicKey: verificationKey,
|
||||
}, nil
|
||||
case *rsa.PublicKey:
|
||||
return &rsaEncrypterVerifier{
|
||||
publicKey: verificationKey,
|
||||
}, nil
|
||||
case *ecdsa.PublicKey:
|
||||
return &ecEncrypterVerifier{
|
||||
publicKey: verificationKey,
|
||||
}, nil
|
||||
case []byte:
|
||||
return &symmetricMac{
|
||||
key: verificationKey,
|
||||
}, nil
|
||||
case JSONWebKey:
|
||||
return newVerifier(verificationKey.Key)
|
||||
case *JSONWebKey:
|
||||
return newVerifier(verificationKey.Key)
|
||||
}
|
||||
if ov, ok := verificationKey.(OpaqueVerifier); ok {
|
||||
return &opaqueVerifier{verifier: ov}, nil
|
||||
}
|
||||
return nil, ErrUnsupportedKeyType
|
||||
}
|
||||
|
||||
func (ctx *genericSigner) addRecipient(alg SignatureAlgorithm, signingKey interface{}) error {
|
||||
recipient, err := makeJWSRecipient(alg, signingKey)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
ctx.recipients = append(ctx.recipients, recipient)
|
||||
return nil
|
||||
}
|
||||
|
||||
func makeJWSRecipient(alg SignatureAlgorithm, signingKey interface{}) (recipientSigInfo, error) {
|
||||
switch signingKey := signingKey.(type) {
|
||||
case ed25519.PrivateKey:
|
||||
return newEd25519Signer(alg, signingKey)
|
||||
case *rsa.PrivateKey:
|
||||
return newRSASigner(alg, signingKey)
|
||||
case *ecdsa.PrivateKey:
|
||||
return newECDSASigner(alg, signingKey)
|
||||
case []byte:
|
||||
return newSymmetricSigner(alg, signingKey)
|
||||
case JSONWebKey:
|
||||
return newJWKSigner(alg, signingKey)
|
||||
case *JSONWebKey:
|
||||
return newJWKSigner(alg, *signingKey)
|
||||
}
|
||||
if signer, ok := signingKey.(OpaqueSigner); ok {
|
||||
return newOpaqueSigner(alg, signer)
|
||||
}
|
||||
return recipientSigInfo{}, ErrUnsupportedKeyType
|
||||
}
|
||||
|
||||
func newJWKSigner(alg SignatureAlgorithm, signingKey JSONWebKey) (recipientSigInfo, error) {
|
||||
recipient, err := makeJWSRecipient(alg, signingKey.Key)
|
||||
if err != nil {
|
||||
return recipientSigInfo{}, err
|
||||
}
|
||||
if recipient.publicKey != nil && recipient.publicKey() != nil {
|
||||
// recipient.publicKey is a JWK synthesized for embedding when recipientSigInfo
|
||||
// was created for the inner key (such as a RSA or ECDSA public key). It contains
|
||||
// the pub key for embedding, but doesn't have extra params like key id.
|
||||
publicKey := signingKey
|
||||
publicKey.Key = recipient.publicKey().Key
|
||||
recipient.publicKey = staticPublicKey(&publicKey)
|
||||
|
||||
// This should be impossible, but let's check anyway.
|
||||
if !recipient.publicKey().IsPublic() {
|
||||
return recipientSigInfo{}, errors.New("square/go-jose: public key was unexpectedly not public")
|
||||
}
|
||||
}
|
||||
return recipient, nil
|
||||
}
|
||||
|
||||
func (ctx *genericSigner) Sign(payload []byte) (*JSONWebSignature, error) {
|
||||
obj := &JSONWebSignature{}
|
||||
obj.payload = payload
|
||||
obj.Signatures = make([]Signature, len(ctx.recipients))
|
||||
|
||||
for i, recipient := range ctx.recipients {
|
||||
protected := map[HeaderKey]interface{}{
|
||||
headerAlgorithm: string(recipient.sigAlg),
|
||||
}
|
||||
|
||||
if recipient.publicKey != nil && recipient.publicKey() != nil {
|
||||
// We want to embed the JWK or set the kid header, but not both. Having a protected
|
||||
// header that contains an embedded JWK while also simultaneously containing the kid
|
||||
// header is confusing, and at least in ACME the two are considered to be mutually
|
||||
// exclusive. The fact that both can exist at the same time is a somewhat unfortunate
|
||||
// result of the JOSE spec. We've decided that this library will only include one or
|
||||
// the other to avoid this confusion.
|
||||
//
|
||||
// See https://github.com/square/go-jose/issues/157 for more context.
|
||||
if ctx.embedJWK {
|
||||
protected[headerJWK] = recipient.publicKey()
|
||||
} else {
|
||||
protected[headerKeyID] = recipient.publicKey().KeyID
|
||||
}
|
||||
}
|
||||
|
||||
if ctx.nonceSource != nil {
|
||||
nonce, err := ctx.nonceSource.Nonce()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: Error generating nonce: %v", err)
|
||||
}
|
||||
protected[headerNonce] = nonce
|
||||
}
|
||||
|
||||
for k, v := range ctx.extraHeaders {
|
||||
protected[k] = v
|
||||
}
|
||||
|
||||
serializedProtected := mustSerializeJSON(protected)
|
||||
|
||||
input := []byte(fmt.Sprintf("%s.%s",
|
||||
base64.RawURLEncoding.EncodeToString(serializedProtected),
|
||||
base64.RawURLEncoding.EncodeToString(payload)))
|
||||
|
||||
signatureInfo, err := recipient.signer.signPayload(input, recipient.sigAlg)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
signatureInfo.protected = &rawHeader{}
|
||||
for k, v := range protected {
|
||||
b, err := json.Marshal(v)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: Error marshalling item %#v: %v", k, err)
|
||||
}
|
||||
(*signatureInfo.protected)[k] = makeRawMessage(b)
|
||||
}
|
||||
obj.Signatures[i] = signatureInfo
|
||||
}
|
||||
|
||||
return obj, nil
|
||||
}
|
||||
|
||||
func (ctx *genericSigner) Options() SignerOptions {
|
||||
return SignerOptions{
|
||||
NonceSource: ctx.nonceSource,
|
||||
EmbedJWK: ctx.embedJWK,
|
||||
ExtraHeaders: ctx.extraHeaders,
|
||||
}
|
||||
}
|
||||
|
||||
// Verify validates the signature on the object and returns the payload.
|
||||
// This function does not support multi-signature, if you desire multi-sig
|
||||
// verification use VerifyMulti instead.
|
||||
//
|
||||
// Be careful when verifying signatures based on embedded JWKs inside the
|
||||
// payload header. You cannot assume that the key received in a payload is
|
||||
// trusted.
|
||||
func (obj JSONWebSignature) Verify(verificationKey interface{}) ([]byte, error) {
|
||||
err := obj.DetachedVerify(obj.payload, verificationKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return obj.payload, nil
|
||||
}
|
||||
|
||||
// UnsafePayloadWithoutVerification returns the payload without
|
||||
// verifying it. The content returned from this function cannot be
|
||||
// trusted.
|
||||
func (obj JSONWebSignature) UnsafePayloadWithoutVerification() []byte {
|
||||
return obj.payload
|
||||
}
|
||||
|
||||
// DetachedVerify validates a detached signature on the given payload. In
|
||||
// most cases, you will probably want to use Verify instead. DetachedVerify
|
||||
// is only useful if you have a payload and signature that are separated from
|
||||
// each other.
|
||||
func (obj JSONWebSignature) DetachedVerify(payload []byte, verificationKey interface{}) error {
|
||||
verifier, err := newVerifier(verificationKey)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if len(obj.Signatures) > 1 {
|
||||
return errors.New("square/go-jose: too many signatures in payload; expecting only one")
|
||||
}
|
||||
|
||||
signature := obj.Signatures[0]
|
||||
headers := signature.mergedHeaders()
|
||||
critical, err := headers.getCritical()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(critical) > 0 {
|
||||
// Unsupported crit header
|
||||
return ErrCryptoFailure
|
||||
}
|
||||
|
||||
input := obj.computeAuthData(payload, &signature)
|
||||
alg := headers.getSignatureAlgorithm()
|
||||
err = verifier.verifyPayload(input, signature.Signature, alg)
|
||||
if err == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
return ErrCryptoFailure
|
||||
}
|
||||
|
||||
// VerifyMulti validates (one of the multiple) signatures on the object and
|
||||
// returns the index of the signature that was verified, along with the signature
|
||||
// object and the payload. We return the signature and index to guarantee that
|
||||
// callers are getting the verified value.
|
||||
func (obj JSONWebSignature) VerifyMulti(verificationKey interface{}) (int, Signature, []byte, error) {
|
||||
idx, sig, err := obj.DetachedVerifyMulti(obj.payload, verificationKey)
|
||||
if err != nil {
|
||||
return -1, Signature{}, nil, err
|
||||
}
|
||||
return idx, sig, obj.payload, nil
|
||||
}
|
||||
|
||||
// DetachedVerifyMulti validates a detached signature on the given payload with
|
||||
// a signature/object that has potentially multiple signers. This returns the index
|
||||
// of the signature that was verified, along with the signature object. We return
|
||||
// the signature and index to guarantee that callers are getting the verified value.
|
||||
//
|
||||
// In most cases, you will probably want to use Verify or VerifyMulti instead.
|
||||
// DetachedVerifyMulti is only useful if you have a payload and signature that are
|
||||
// separated from each other, and the signature can have multiple signers at the
|
||||
// same time.
|
||||
func (obj JSONWebSignature) DetachedVerifyMulti(payload []byte, verificationKey interface{}) (int, Signature, error) {
|
||||
verifier, err := newVerifier(verificationKey)
|
||||
if err != nil {
|
||||
return -1, Signature{}, err
|
||||
}
|
||||
|
||||
for i, signature := range obj.Signatures {
|
||||
headers := signature.mergedHeaders()
|
||||
critical, err := headers.getCritical()
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
if len(critical) > 0 {
|
||||
// Unsupported crit header
|
||||
continue
|
||||
}
|
||||
|
||||
input := obj.computeAuthData(payload, &signature)
|
||||
alg := headers.getSignatureAlgorithm()
|
||||
err = verifier.verifyPayload(input, signature.Signature, alg)
|
||||
if err == nil {
|
||||
return i, signature, nil
|
||||
}
|
||||
}
|
||||
|
||||
return -1, Signature{}, ErrCryptoFailure
|
||||
}
|
||||
482
vendor/gopkg.in/square/go-jose.v2/symmetric.go
generated
vendored
Normal file
482
vendor/gopkg.in/square/go-jose.v2/symmetric.go
generated
vendored
Normal file
@ -0,0 +1,482 @@
|
||||
/*-
|
||||
* Copyright 2014 Square Inc.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package jose
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"crypto/hmac"
|
||||
"crypto/rand"
|
||||
"crypto/sha256"
|
||||
"crypto/sha512"
|
||||
"crypto/subtle"
|
||||
"errors"
|
||||
"fmt"
|
||||
"hash"
|
||||
"io"
|
||||
|
||||
"golang.org/x/crypto/pbkdf2"
|
||||
"gopkg.in/square/go-jose.v2/cipher"
|
||||
)
|
||||
|
||||
// Random reader (stubbed out in tests)
|
||||
var RandReader = rand.Reader
|
||||
|
||||
const (
|
||||
// RFC7518 recommends a minimum of 1,000 iterations:
|
||||
// https://tools.ietf.org/html/rfc7518#section-4.8.1.2
|
||||
// NIST recommends a minimum of 10,000:
|
||||
// https://pages.nist.gov/800-63-3/sp800-63b.html
|
||||
// 1Password uses 100,000:
|
||||
// https://support.1password.com/pbkdf2/
|
||||
defaultP2C = 100000
|
||||
// Default salt size: 128 bits
|
||||
defaultP2SSize = 16
|
||||
)
|
||||
|
||||
// Dummy key cipher for shared symmetric key mode
|
||||
type symmetricKeyCipher struct {
|
||||
key []byte // Pre-shared content-encryption key
|
||||
p2c int // PBES2 Count
|
||||
p2s []byte // PBES2 Salt Input
|
||||
}
|
||||
|
||||
// Signer/verifier for MAC modes
|
||||
type symmetricMac struct {
|
||||
key []byte
|
||||
}
|
||||
|
||||
// Input/output from an AEAD operation
|
||||
type aeadParts struct {
|
||||
iv, ciphertext, tag []byte
|
||||
}
|
||||
|
||||
// A content cipher based on an AEAD construction
|
||||
type aeadContentCipher struct {
|
||||
keyBytes int
|
||||
authtagBytes int
|
||||
getAead func(key []byte) (cipher.AEAD, error)
|
||||
}
|
||||
|
||||
// Random key generator
|
||||
type randomKeyGenerator struct {
|
||||
size int
|
||||
}
|
||||
|
||||
// Static key generator
|
||||
type staticKeyGenerator struct {
|
||||
key []byte
|
||||
}
|
||||
|
||||
// Create a new content cipher based on AES-GCM
|
||||
func newAESGCM(keySize int) contentCipher {
|
||||
return &aeadContentCipher{
|
||||
keyBytes: keySize,
|
||||
authtagBytes: 16,
|
||||
getAead: func(key []byte) (cipher.AEAD, error) {
|
||||
aes, err := aes.NewCipher(key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return cipher.NewGCM(aes)
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// Create a new content cipher based on AES-CBC+HMAC
|
||||
func newAESCBC(keySize int) contentCipher {
|
||||
return &aeadContentCipher{
|
||||
keyBytes: keySize * 2,
|
||||
authtagBytes: keySize,
|
||||
getAead: func(key []byte) (cipher.AEAD, error) {
|
||||
return josecipher.NewCBCHMAC(key, aes.NewCipher)
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// Get an AEAD cipher object for the given content encryption algorithm
|
||||
func getContentCipher(alg ContentEncryption) contentCipher {
|
||||
switch alg {
|
||||
case A128GCM:
|
||||
return newAESGCM(16)
|
||||
case A192GCM:
|
||||
return newAESGCM(24)
|
||||
case A256GCM:
|
||||
return newAESGCM(32)
|
||||
case A128CBC_HS256:
|
||||
return newAESCBC(16)
|
||||
case A192CBC_HS384:
|
||||
return newAESCBC(24)
|
||||
case A256CBC_HS512:
|
||||
return newAESCBC(32)
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// getPbkdf2Params returns the key length and hash function used in
|
||||
// pbkdf2.Key.
|
||||
func getPbkdf2Params(alg KeyAlgorithm) (int, func() hash.Hash) {
|
||||
switch alg {
|
||||
case PBES2_HS256_A128KW:
|
||||
return 16, sha256.New
|
||||
case PBES2_HS384_A192KW:
|
||||
return 24, sha512.New384
|
||||
case PBES2_HS512_A256KW:
|
||||
return 32, sha512.New
|
||||
default:
|
||||
panic("invalid algorithm")
|
||||
}
|
||||
}
|
||||
|
||||
// getRandomSalt generates a new salt of the given size.
|
||||
func getRandomSalt(size int) ([]byte, error) {
|
||||
salt := make([]byte, size)
|
||||
_, err := io.ReadFull(RandReader, salt)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return salt, nil
|
||||
}
|
||||
|
||||
// newSymmetricRecipient creates a JWE encrypter based on AES-GCM key wrap.
|
||||
func newSymmetricRecipient(keyAlg KeyAlgorithm, key []byte) (recipientKeyInfo, error) {
|
||||
switch keyAlg {
|
||||
case DIRECT, A128GCMKW, A192GCMKW, A256GCMKW, A128KW, A192KW, A256KW:
|
||||
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
|
||||
default:
|
||||
return recipientKeyInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
return recipientKeyInfo{
|
||||
keyAlg: keyAlg,
|
||||
keyEncrypter: &symmetricKeyCipher{
|
||||
key: key,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// newSymmetricSigner creates a recipientSigInfo based on the given key.
|
||||
func newSymmetricSigner(sigAlg SignatureAlgorithm, key []byte) (recipientSigInfo, error) {
|
||||
// Verify that key management algorithm is supported by this encrypter
|
||||
switch sigAlg {
|
||||
case HS256, HS384, HS512:
|
||||
default:
|
||||
return recipientSigInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
return recipientSigInfo{
|
||||
sigAlg: sigAlg,
|
||||
signer: &symmetricMac{
|
||||
key: key,
|
||||
},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Generate a random key for the given content cipher
|
||||
func (ctx randomKeyGenerator) genKey() ([]byte, rawHeader, error) {
|
||||
key := make([]byte, ctx.size)
|
||||
_, err := io.ReadFull(RandReader, key)
|
||||
if err != nil {
|
||||
return nil, rawHeader{}, err
|
||||
}
|
||||
|
||||
return key, rawHeader{}, nil
|
||||
}
|
||||
|
||||
// Key size for random generator
|
||||
func (ctx randomKeyGenerator) keySize() int {
|
||||
return ctx.size
|
||||
}
|
||||
|
||||
// Generate a static key (for direct mode)
|
||||
func (ctx staticKeyGenerator) genKey() ([]byte, rawHeader, error) {
|
||||
cek := make([]byte, len(ctx.key))
|
||||
copy(cek, ctx.key)
|
||||
return cek, rawHeader{}, nil
|
||||
}
|
||||
|
||||
// Key size for static generator
|
||||
func (ctx staticKeyGenerator) keySize() int {
|
||||
return len(ctx.key)
|
||||
}
|
||||
|
||||
// Get key size for this cipher
|
||||
func (ctx aeadContentCipher) keySize() int {
|
||||
return ctx.keyBytes
|
||||
}
|
||||
|
||||
// Encrypt some data
|
||||
func (ctx aeadContentCipher) encrypt(key, aad, pt []byte) (*aeadParts, error) {
|
||||
// Get a new AEAD instance
|
||||
aead, err := ctx.getAead(key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Initialize a new nonce
|
||||
iv := make([]byte, aead.NonceSize())
|
||||
_, err = io.ReadFull(RandReader, iv)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ciphertextAndTag := aead.Seal(nil, iv, pt, aad)
|
||||
offset := len(ciphertextAndTag) - ctx.authtagBytes
|
||||
|
||||
return &aeadParts{
|
||||
iv: iv,
|
||||
ciphertext: ciphertextAndTag[:offset],
|
||||
tag: ciphertextAndTag[offset:],
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Decrypt some data
|
||||
func (ctx aeadContentCipher) decrypt(key, aad []byte, parts *aeadParts) ([]byte, error) {
|
||||
aead, err := ctx.getAead(key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(parts.iv) != aead.NonceSize() || len(parts.tag) < ctx.authtagBytes {
|
||||
return nil, ErrCryptoFailure
|
||||
}
|
||||
|
||||
return aead.Open(nil, parts.iv, append(parts.ciphertext, parts.tag...), aad)
|
||||
}
|
||||
|
||||
// Encrypt the content encryption key.
|
||||
func (ctx *symmetricKeyCipher) encryptKey(cek []byte, alg KeyAlgorithm) (recipientInfo, error) {
|
||||
switch alg {
|
||||
case DIRECT:
|
||||
return recipientInfo{
|
||||
header: &rawHeader{},
|
||||
}, nil
|
||||
case A128GCMKW, A192GCMKW, A256GCMKW:
|
||||
aead := newAESGCM(len(ctx.key))
|
||||
|
||||
parts, err := aead.encrypt(ctx.key, []byte{}, cek)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
header := &rawHeader{}
|
||||
header.set(headerIV, newBuffer(parts.iv))
|
||||
header.set(headerTag, newBuffer(parts.tag))
|
||||
|
||||
return recipientInfo{
|
||||
header: header,
|
||||
encryptedKey: parts.ciphertext,
|
||||
}, nil
|
||||
case A128KW, A192KW, A256KW:
|
||||
block, err := aes.NewCipher(ctx.key)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
jek, err := josecipher.KeyWrap(block, cek)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
return recipientInfo{
|
||||
encryptedKey: jek,
|
||||
header: &rawHeader{},
|
||||
}, nil
|
||||
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
|
||||
if len(ctx.p2s) == 0 {
|
||||
salt, err := getRandomSalt(defaultP2SSize)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
ctx.p2s = salt
|
||||
}
|
||||
|
||||
if ctx.p2c <= 0 {
|
||||
ctx.p2c = defaultP2C
|
||||
}
|
||||
|
||||
// salt is UTF8(Alg) || 0x00 || Salt Input
|
||||
salt := bytes.Join([][]byte{[]byte(alg), ctx.p2s}, []byte{0x00})
|
||||
|
||||
// derive key
|
||||
keyLen, h := getPbkdf2Params(alg)
|
||||
key := pbkdf2.Key(ctx.key, salt, ctx.p2c, keyLen, h)
|
||||
|
||||
// use AES cipher with derived key
|
||||
block, err := aes.NewCipher(key)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
jek, err := josecipher.KeyWrap(block, cek)
|
||||
if err != nil {
|
||||
return recipientInfo{}, err
|
||||
}
|
||||
|
||||
header := &rawHeader{}
|
||||
header.set(headerP2C, ctx.p2c)
|
||||
header.set(headerP2S, newBuffer(ctx.p2s))
|
||||
|
||||
return recipientInfo{
|
||||
encryptedKey: jek,
|
||||
header: header,
|
||||
}, nil
|
||||
}
|
||||
|
||||
return recipientInfo{}, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// Decrypt the content encryption key.
|
||||
func (ctx *symmetricKeyCipher) decryptKey(headers rawHeader, recipient *recipientInfo, generator keyGenerator) ([]byte, error) {
|
||||
switch headers.getAlgorithm() {
|
||||
case DIRECT:
|
||||
cek := make([]byte, len(ctx.key))
|
||||
copy(cek, ctx.key)
|
||||
return cek, nil
|
||||
case A128GCMKW, A192GCMKW, A256GCMKW:
|
||||
aead := newAESGCM(len(ctx.key))
|
||||
|
||||
iv, err := headers.getIV()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid IV: %v", err)
|
||||
}
|
||||
tag, err := headers.getTag()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid tag: %v", err)
|
||||
}
|
||||
|
||||
parts := &aeadParts{
|
||||
iv: iv.bytes(),
|
||||
ciphertext: recipient.encryptedKey,
|
||||
tag: tag.bytes(),
|
||||
}
|
||||
|
||||
cek, err := aead.decrypt(ctx.key, []byte{}, parts)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return cek, nil
|
||||
case A128KW, A192KW, A256KW:
|
||||
block, err := aes.NewCipher(ctx.key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
cek, err := josecipher.KeyUnwrap(block, recipient.encryptedKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return cek, nil
|
||||
case PBES2_HS256_A128KW, PBES2_HS384_A192KW, PBES2_HS512_A256KW:
|
||||
p2s, err := headers.getP2S()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid P2S: %v", err)
|
||||
}
|
||||
if p2s == nil || len(p2s.data) == 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid P2S: must be present")
|
||||
}
|
||||
|
||||
p2c, err := headers.getP2C()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid P2C: %v", err)
|
||||
}
|
||||
if p2c <= 0 {
|
||||
return nil, fmt.Errorf("square/go-jose: invalid P2C: must be a positive integer")
|
||||
}
|
||||
|
||||
// salt is UTF8(Alg) || 0x00 || Salt Input
|
||||
alg := headers.getAlgorithm()
|
||||
salt := bytes.Join([][]byte{[]byte(alg), p2s.bytes()}, []byte{0x00})
|
||||
|
||||
// derive key
|
||||
keyLen, h := getPbkdf2Params(alg)
|
||||
key := pbkdf2.Key(ctx.key, salt, p2c, keyLen, h)
|
||||
|
||||
// use AES cipher with derived key
|
||||
block, err := aes.NewCipher(key)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
cek, err := josecipher.KeyUnwrap(block, recipient.encryptedKey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return cek, nil
|
||||
}
|
||||
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
// Sign the given payload
|
||||
func (ctx symmetricMac) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
|
||||
mac, err := ctx.hmac(payload, alg)
|
||||
if err != nil {
|
||||
return Signature{}, errors.New("square/go-jose: failed to compute hmac")
|
||||
}
|
||||
|
||||
return Signature{
|
||||
Signature: mac,
|
||||
protected: &rawHeader{},
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Verify the given payload
|
||||
func (ctx symmetricMac) verifyPayload(payload []byte, mac []byte, alg SignatureAlgorithm) error {
|
||||
expected, err := ctx.hmac(payload, alg)
|
||||
if err != nil {
|
||||
return errors.New("square/go-jose: failed to compute hmac")
|
||||
}
|
||||
|
||||
if len(mac) != len(expected) {
|
||||
return errors.New("square/go-jose: invalid hmac")
|
||||
}
|
||||
|
||||
match := subtle.ConstantTimeCompare(mac, expected)
|
||||
if match != 1 {
|
||||
return errors.New("square/go-jose: invalid hmac")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Compute the HMAC based on the given alg value
|
||||
func (ctx symmetricMac) hmac(payload []byte, alg SignatureAlgorithm) ([]byte, error) {
|
||||
var hash func() hash.Hash
|
||||
|
||||
switch alg {
|
||||
case HS256:
|
||||
hash = sha256.New
|
||||
case HS384:
|
||||
hash = sha512.New384
|
||||
case HS512:
|
||||
hash = sha512.New
|
||||
default:
|
||||
return nil, ErrUnsupportedAlgorithm
|
||||
}
|
||||
|
||||
hmac := hmac.New(hash, ctx.key)
|
||||
|
||||
// According to documentation, Write() on hash never fails
|
||||
_, _ = hmac.Write(payload)
|
||||
return hmac.Sum(nil), nil
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user