Update github.com/containerd/imgcrypt to v2.0.0

Signed-off-by: Kirtana Ashok <kiashok@microsoft.com>
This commit is contained in:
Kirtana Ashok
2025-01-30 10:09:20 -08:00
parent 0fbf3c3b38
commit 9d5cfce833
95 changed files with 6120 additions and 543 deletions

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package legacyx509
import "fmt"
// legacyGodebugSetting is a type mimicking Go's internal godebug package
// settings, which are used to enable / disable certain functionalities at
// build time.
type legacyGodebugSetting int
func (s legacyGodebugSetting) Value() string {
return fmt.Sprintf("%d", s)
}
func (s legacyGodebugSetting) IncNonDefault() {}

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/*
Package legacyx509 is a copy of certain parts of Go's crypto/x509 package.
It is based on Go 1.23, and has just the parts copied over required for
parsing X509 certificates.
The primary reason this copy exists is to keep support for parsing PKCS7
messages containing Simple Certificate Enrolment Protocol (SCEP) requests
from Windows devices. Go 1.23 made a change marking certificates with a
critical authority key identifier as invalid, which is mandated by RFC 5280,
but apparently Windows marks those specific certificates as such, resulting
in those SCEP requests failing from being parsed correctly.
*/
package legacyx509

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// Copyright 2023 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 legacyx509
import (
"bytes"
"encoding/asn1"
"errors"
"math"
"math/big"
"math/bits"
"strconv"
"strings"
)
var (
errInvalidOID = errors.New("invalid oid")
)
// An OID represents an ASN.1 OBJECT IDENTIFIER.
type OID struct {
der []byte
}
// ParseOID parses a Object Identifier string, represented by ASCII numbers separated by dots.
func ParseOID(oid string) (OID, error) {
var o OID
return o, o.unmarshalOIDText(oid)
}
func newOIDFromDER(der []byte) (OID, bool) {
if len(der) == 0 || der[len(der)-1]&0x80 != 0 {
return OID{}, false
}
start := 0
for i, v := range der {
// ITU-T X.690, section 8.19.2:
// The subidentifier shall be encoded in the fewest possible octets,
// that is, the leading octet of the subidentifier shall not have the value 0x80.
if i == start && v == 0x80 {
return OID{}, false
}
if v&0x80 == 0 {
start = i + 1
}
}
return OID{der}, true
}
// OIDFromInts creates a new OID using ints, each integer is a separate component.
func OIDFromInts(oid []uint64) (OID, error) {
if len(oid) < 2 || oid[0] > 2 || (oid[0] < 2 && oid[1] >= 40) {
return OID{}, errInvalidOID
}
length := base128IntLength(oid[0]*40 + oid[1])
for _, v := range oid[2:] {
length += base128IntLength(v)
}
der := make([]byte, 0, length)
der = appendBase128Int(der, oid[0]*40+oid[1])
for _, v := range oid[2:] {
der = appendBase128Int(der, v)
}
return OID{der}, nil
}
func base128IntLength(n uint64) int {
if n == 0 {
return 1
}
return (bits.Len64(n) + 6) / 7
}
func appendBase128Int(dst []byte, n uint64) []byte {
for i := base128IntLength(n) - 1; i >= 0; i-- {
o := byte(n >> uint(i*7))
o &= 0x7f
if i != 0 {
o |= 0x80
}
dst = append(dst, o)
}
return dst
}
func base128BigIntLength(n *big.Int) int {
if n.Cmp(big.NewInt(0)) == 0 {
return 1
}
return (n.BitLen() + 6) / 7
}
func appendBase128BigInt(dst []byte, n *big.Int) []byte {
if n.Cmp(big.NewInt(0)) == 0 {
return append(dst, 0)
}
for i := base128BigIntLength(n) - 1; i >= 0; i-- {
o := byte(big.NewInt(0).Rsh(n, uint(i)*7).Bits()[0])
o &= 0x7f
if i != 0 {
o |= 0x80
}
dst = append(dst, o)
}
return dst
}
// AppendText implements [encoding.TextAppender]
func (o OID) AppendText(b []byte) ([]byte, error) {
return append(b, o.String()...), nil
}
// MarshalText implements [encoding.TextMarshaler]
func (o OID) MarshalText() ([]byte, error) {
return o.AppendText(nil)
}
// UnmarshalText implements [encoding.TextUnmarshaler]
func (o *OID) UnmarshalText(text []byte) error {
return o.unmarshalOIDText(string(text))
}
// cutString slices s around the first instance of sep,
// returning the text before and after sep.
// The found result reports whether sep appears in s.
// If sep does not appear in s, cut returns s, "", false.
func cutString(s, sep string) (before, after string, found bool) {
if i := strings.Index(s, sep); i >= 0 {
return s[:i], s[i+len(sep):], true
}
return s, "", false
}
func (o *OID) unmarshalOIDText(oid string) error {
// (*big.Int).SetString allows +/- signs, but we don't want
// to allow them in the string representation of Object Identifier, so
// reject such encodings.
for _, c := range oid {
isDigit := c >= '0' && c <= '9'
if !isDigit && c != '.' {
return errInvalidOID
}
}
var (
firstNum string
secondNum string
)
var nextComponentExists bool
firstNum, oid, nextComponentExists = cutString(oid, ".")
if !nextComponentExists {
return errInvalidOID
}
secondNum, oid, nextComponentExists = cutString(oid, ".")
var (
first = big.NewInt(0)
second = big.NewInt(0)
)
if _, ok := first.SetString(firstNum, 10); !ok {
return errInvalidOID
}
if _, ok := second.SetString(secondNum, 10); !ok {
return errInvalidOID
}
if first.Cmp(big.NewInt(2)) > 0 || (first.Cmp(big.NewInt(2)) < 0 && second.Cmp(big.NewInt(40)) >= 0) {
return errInvalidOID
}
firstComponent := first.Mul(first, big.NewInt(40))
firstComponent.Add(firstComponent, second)
der := appendBase128BigInt(make([]byte, 0, 32), firstComponent)
for nextComponentExists {
var strNum string
strNum, oid, nextComponentExists = cutString(oid, ".")
b, ok := big.NewInt(0).SetString(strNum, 10)
if !ok {
return errInvalidOID
}
der = appendBase128BigInt(der, b)
}
o.der = der
return nil
}
// AppendBinary implements [encoding.BinaryAppender]
func (o OID) AppendBinary(b []byte) ([]byte, error) {
return append(b, o.der...), nil
}
// MarshalBinary implements [encoding.BinaryMarshaler]
func (o OID) MarshalBinary() ([]byte, error) {
return o.AppendBinary(nil)
}
// cloneBytes returns a copy of b[:len(b)].
// The result may have additional unused capacity.
// Clone(nil) returns nil.
func cloneBytes(b []byte) []byte {
if b == nil {
return nil
}
return append([]byte{}, b...)
}
// UnmarshalBinary implements [encoding.BinaryUnmarshaler]
func (o *OID) UnmarshalBinary(b []byte) error {
oid, ok := newOIDFromDER(cloneBytes(b))
if !ok {
return errInvalidOID
}
*o = oid
return nil
}
// Equal returns true when oid and other represents the same Object Identifier.
func (oid OID) Equal(other OID) bool {
// There is only one possible DER encoding of
// each unique Object Identifier.
return bytes.Equal(oid.der, other.der)
}
func parseBase128Int(bytes []byte, initOffset int) (ret, offset int, failed bool) {
offset = initOffset
var ret64 int64
for shifted := 0; offset < len(bytes); shifted++ {
// 5 * 7 bits per byte == 35 bits of data
// Thus the representation is either non-minimal or too large for an int32
if shifted == 5 {
failed = true
return
}
ret64 <<= 7
b := bytes[offset]
// integers should be minimally encoded, so the leading octet should
// never be 0x80
if shifted == 0 && b == 0x80 {
failed = true
return
}
ret64 |= int64(b & 0x7f)
offset++
if b&0x80 == 0 {
ret = int(ret64)
// Ensure that the returned value fits in an int on all platforms
if ret64 > math.MaxInt32 {
failed = true
}
return
}
}
failed = true
return
}
// EqualASN1OID returns whether an OID equals an asn1.ObjectIdentifier. If
// asn1.ObjectIdentifier cannot represent the OID specified by oid, because
// a component of OID requires more than 31 bits, it returns false.
func (oid OID) EqualASN1OID(other asn1.ObjectIdentifier) bool {
if len(other) < 2 {
return false
}
v, offset, failed := parseBase128Int(oid.der, 0)
if failed {
// This should never happen, since we've already parsed the OID,
// but just in case.
return false
}
if v < 80 {
a, b := v/40, v%40
if other[0] != a || other[1] != b {
return false
}
} else {
a, b := 2, v-80
if other[0] != a || other[1] != b {
return false
}
}
i := 2
for ; offset < len(oid.der); i++ {
v, offset, failed = parseBase128Int(oid.der, offset)
if failed {
// Again, shouldn't happen, since we've already parsed
// the OID, but better safe than sorry.
return false
}
if i >= len(other) || v != other[i] {
return false
}
}
return i == len(other)
}
// Strings returns the string representation of the Object Identifier.
func (oid OID) String() string {
var b strings.Builder
b.Grow(32)
const (
valSize = 64 // size in bits of val.
bitsPerByte = 7
maxValSafeShift = (1 << (valSize - bitsPerByte)) - 1
)
var (
start = 0
val = uint64(0)
numBuf = make([]byte, 0, 21)
bigVal *big.Int
overflow bool
)
for i, v := range oid.der {
curVal := v & 0x7F
valEnd := v&0x80 == 0
if valEnd {
if start != 0 {
b.WriteByte('.')
}
}
if !overflow && val > maxValSafeShift {
if bigVal == nil {
bigVal = new(big.Int)
}
bigVal = bigVal.SetUint64(val)
overflow = true
}
if overflow {
bigVal = bigVal.Lsh(bigVal, bitsPerByte).Or(bigVal, big.NewInt(int64(curVal)))
if valEnd {
if start == 0 {
b.WriteString("2.")
bigVal = bigVal.Sub(bigVal, big.NewInt(80))
}
numBuf = bigVal.Append(numBuf, 10)
b.Write(numBuf)
numBuf = numBuf[:0]
val = 0
start = i + 1
overflow = false
}
continue
}
val <<= bitsPerByte
val |= uint64(curVal)
if valEnd {
if start == 0 {
if val < 80 {
b.Write(strconv.AppendUint(numBuf, val/40, 10))
b.WriteByte('.')
b.Write(strconv.AppendUint(numBuf, val%40, 10))
} else {
b.WriteString("2.")
b.Write(strconv.AppendUint(numBuf, val-80, 10))
}
} else {
b.Write(strconv.AppendUint(numBuf, val, 10))
}
val = 0
start = i + 1
}
}
return b.String()
}

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// 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 legacyx509
import (
"math/big"
)
// pkcs1PublicKey reflects the ASN.1 structure of a PKCS #1 public key.
type pkcs1PublicKey struct {
N *big.Int
E int
}

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package legacyx509
import (
"bytes"
"strings"
)
// rfc2821Mailbox represents a “mailbox” (which is an email address to most
// people) by breaking it into the “local” (i.e. before the '@') and “domain”
// parts.
type rfc2821Mailbox struct {
local, domain string
}
// parseRFC2821Mailbox parses an email address into local and domain parts,
// based on the ABNF for a “Mailbox” from RFC 2821. According to RFC 5280,
// Section 4.2.1.6 that's correct for an rfc822Name from a certificate: “The
// format of an rfc822Name is a "Mailbox" as defined in RFC 2821, Section 4.1.2”.
func parseRFC2821Mailbox(in string) (mailbox rfc2821Mailbox, ok bool) {
if len(in) == 0 {
return mailbox, false
}
localPartBytes := make([]byte, 0, len(in)/2)
if in[0] == '"' {
// Quoted-string = DQUOTE *qcontent DQUOTE
// non-whitespace-control = %d1-8 / %d11 / %d12 / %d14-31 / %d127
// qcontent = qtext / quoted-pair
// qtext = non-whitespace-control /
// %d33 / %d35-91 / %d93-126
// quoted-pair = ("\" text) / obs-qp
// text = %d1-9 / %d11 / %d12 / %d14-127 / obs-text
//
// (Names beginning with “obs-” are the obsolete syntax from RFC 2822,
// Section 4. Since it has been 16 years, we no longer accept that.)
in = in[1:]
QuotedString:
for {
if len(in) == 0 {
return mailbox, false
}
c := in[0]
in = in[1:]
switch {
case c == '"':
break QuotedString
case c == '\\':
// quoted-pair
if len(in) == 0 {
return mailbox, false
}
if in[0] == 11 ||
in[0] == 12 ||
(1 <= in[0] && in[0] <= 9) ||
(14 <= in[0] && in[0] <= 127) {
localPartBytes = append(localPartBytes, in[0])
in = in[1:]
} else {
return mailbox, false
}
case c == 11 ||
c == 12 ||
// Space (char 32) is not allowed based on the
// BNF, but RFC 3696 gives an example that
// assumes that it is. Several “verified”
// errata continue to argue about this point.
// We choose to accept it.
c == 32 ||
c == 33 ||
c == 127 ||
(1 <= c && c <= 8) ||
(14 <= c && c <= 31) ||
(35 <= c && c <= 91) ||
(93 <= c && c <= 126):
// qtext
localPartBytes = append(localPartBytes, c)
default:
return mailbox, false
}
}
} else {
// Atom ("." Atom)*
NextChar:
for len(in) > 0 {
// atext from RFC 2822, Section 3.2.4
c := in[0]
switch {
case c == '\\':
// Examples given in RFC 3696 suggest that
// escaped characters can appear outside of a
// quoted string. Several “verified” errata
// continue to argue the point. We choose to
// accept it.
in = in[1:]
if len(in) == 0 {
return mailbox, false
}
fallthrough
case ('0' <= c && c <= '9') ||
('a' <= c && c <= 'z') ||
('A' <= c && c <= 'Z') ||
c == '!' || c == '#' || c == '$' || c == '%' ||
c == '&' || c == '\'' || c == '*' || c == '+' ||
c == '-' || c == '/' || c == '=' || c == '?' ||
c == '^' || c == '_' || c == '`' || c == '{' ||
c == '|' || c == '}' || c == '~' || c == '.':
localPartBytes = append(localPartBytes, in[0])
in = in[1:]
default:
break NextChar
}
}
if len(localPartBytes) == 0 {
return mailbox, false
}
// From RFC 3696, Section 3:
// “period (".") may also appear, but may not be used to start
// or end the local part, nor may two or more consecutive
// periods appear.”
twoDots := []byte{'.', '.'}
if localPartBytes[0] == '.' ||
localPartBytes[len(localPartBytes)-1] == '.' ||
bytes.Contains(localPartBytes, twoDots) {
return mailbox, false
}
}
if len(in) == 0 || in[0] != '@' {
return mailbox, false
}
in = in[1:]
// The RFC species a format for domains, but that's known to be
// violated in practice so we accept that anything after an '@' is the
// domain part.
if _, ok := domainToReverseLabels(in); !ok {
return mailbox, false
}
mailbox.local = string(localPartBytes)
mailbox.domain = in
return mailbox, true
}
// domainToReverseLabels converts a textual domain name like foo.example.com to
// the list of labels in reverse order, e.g. ["com", "example", "foo"].
func domainToReverseLabels(domain string) (reverseLabels []string, ok bool) {
for len(domain) > 0 {
if i := strings.LastIndexByte(domain, '.'); i == -1 {
reverseLabels = append(reverseLabels, domain)
domain = ""
} else {
reverseLabels = append(reverseLabels, domain[i+1:])
domain = domain[:i]
if i == 0 { // domain == ""
// domain is prefixed with an empty label, append an empty
// string to reverseLabels to indicate this.
reverseLabels = append(reverseLabels, "")
}
}
}
if len(reverseLabels) > 0 && len(reverseLabels[0]) == 0 {
// An empty label at the end indicates an absolute value.
return nil, false
}
for _, label := range reverseLabels {
if len(label) == 0 {
// Empty labels are otherwise invalid.
return nil, false
}
for _, c := range label {
if c < 33 || c > 126 {
// Invalid character.
return nil, false
}
}
}
return reverseLabels, true
}

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// 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 LICENSE file.
// Package x509 implements a subset of the X.509 standard.
//
// It allows parsing and generating certificates, certificate signing
// requests, certificate revocation lists, and encoded public and private keys.
// It provides a certificate verifier, complete with a chain builder.
//
// The package targets the X.509 technical profile defined by the IETF (RFC
// 2459/3280/5280), and as further restricted by the CA/Browser Forum Baseline
// Requirements. There is minimal support for features outside of these
// profiles, as the primary goal of the package is to provide compatibility
// with the publicly trusted TLS certificate ecosystem and its policies and
// constraints.
//
// On macOS and Windows, certificate verification is handled by system APIs, but
// the package aims to apply consistent validation rules across operating
// systems.
package legacyx509
import (
"bytes"
"crypto"
"crypto/elliptic"
stdx509 "crypto/x509"
"crypto/x509/pkix"
"encoding/asn1"
"fmt"
"strconv"
"unicode"
// Explicitly import these for their crypto.RegisterHash init side-effects.
// Keep these as blank imports, even if they're imported above.
_ "crypto/sha1"
_ "crypto/sha256"
_ "crypto/sha512"
)
type publicKeyInfo struct {
Raw asn1.RawContent
Algorithm pkix.AlgorithmIdentifier
PublicKey asn1.BitString
}
type SignatureAlgorithm int
const (
UnknownSignatureAlgorithm SignatureAlgorithm = iota
MD2WithRSA // Unsupported.
MD5WithRSA // Only supported for signing, not verification.
SHA1WithRSA // Only supported for signing, and verification of CRLs, CSRs, and OCSP responses.
SHA256WithRSA
SHA384WithRSA
SHA512WithRSA
DSAWithSHA1 // Unsupported.
DSAWithSHA256 // Unsupported.
ECDSAWithSHA1 // Only supported for signing, and verification of CRLs, CSRs, and OCSP responses.
ECDSAWithSHA256
ECDSAWithSHA384
ECDSAWithSHA512
SHA256WithRSAPSS
SHA384WithRSAPSS
SHA512WithRSAPSS
PureEd25519
)
func (algo SignatureAlgorithm) String() string {
for _, details := range signatureAlgorithmDetails {
if details.algo == algo {
return details.name
}
}
return strconv.Itoa(int(algo))
}
type PublicKeyAlgorithm int
const (
UnknownPublicKeyAlgorithm PublicKeyAlgorithm = iota
RSA
DSA // Only supported for parsing.
ECDSA
Ed25519
)
var publicKeyAlgoName = [...]string{
RSA: "RSA",
DSA: "DSA",
ECDSA: "ECDSA",
Ed25519: "Ed25519",
}
func (algo PublicKeyAlgorithm) String() string {
if 0 < algo && int(algo) < len(publicKeyAlgoName) {
return publicKeyAlgoName[algo]
}
return strconv.Itoa(int(algo))
}
// OIDs for signature algorithms
//
// pkcs-1 OBJECT IDENTIFIER ::= {
// iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 }
//
// RFC 3279 2.2.1 RSA Signature Algorithms
//
// md5WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 4 }
//
// sha-1WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 5 }
//
// dsaWithSha1 OBJECT IDENTIFIER ::= {
// iso(1) member-body(2) us(840) x9-57(10040) x9cm(4) 3 }
//
// RFC 3279 2.2.3 ECDSA Signature Algorithm
//
// ecdsa-with-SHA1 OBJECT IDENTIFIER ::= {
// iso(1) member-body(2) us(840) ansi-x962(10045)
// signatures(4) ecdsa-with-SHA1(1)}
//
// RFC 4055 5 PKCS #1 Version 1.5
//
// sha256WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 11 }
//
// sha384WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 12 }
//
// sha512WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 13 }
//
// RFC 5758 3.1 DSA Signature Algorithms
//
// dsaWithSha256 OBJECT IDENTIFIER ::= {
// joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
// csor(3) algorithms(4) id-dsa-with-sha2(3) 2}
//
// RFC 5758 3.2 ECDSA Signature Algorithm
//
// ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 }
//
// ecdsa-with-SHA384 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 3 }
//
// ecdsa-with-SHA512 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 4 }
//
// RFC 8410 3 Curve25519 and Curve448 Algorithm Identifiers
//
// id-Ed25519 OBJECT IDENTIFIER ::= { 1 3 101 112 }
var (
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}
oidSignatureEd25519 = asn1.ObjectIdentifier{1, 3, 101, 112}
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 SignatureAlgorithm
name string
oid asn1.ObjectIdentifier
params asn1.RawValue
pubKeyAlgo PublicKeyAlgorithm
hash crypto.Hash
isRSAPSS bool
}{
{MD5WithRSA, "MD5-RSA", oidSignatureMD5WithRSA, asn1.NullRawValue, RSA, crypto.MD5, false},
{SHA1WithRSA, "SHA1-RSA", oidSignatureSHA1WithRSA, asn1.NullRawValue, RSA, crypto.SHA1, false},
{SHA1WithRSA, "SHA1-RSA", oidISOSignatureSHA1WithRSA, asn1.NullRawValue, RSA, crypto.SHA1, false},
{SHA256WithRSA, "SHA256-RSA", oidSignatureSHA256WithRSA, asn1.NullRawValue, RSA, crypto.SHA256, false},
{SHA384WithRSA, "SHA384-RSA", oidSignatureSHA384WithRSA, asn1.NullRawValue, RSA, crypto.SHA384, false},
{SHA512WithRSA, "SHA512-RSA", oidSignatureSHA512WithRSA, asn1.NullRawValue, RSA, crypto.SHA512, false},
{SHA256WithRSAPSS, "SHA256-RSAPSS", oidSignatureRSAPSS, pssParametersSHA256, RSA, crypto.SHA256, true},
{SHA384WithRSAPSS, "SHA384-RSAPSS", oidSignatureRSAPSS, pssParametersSHA384, RSA, crypto.SHA384, true},
{SHA512WithRSAPSS, "SHA512-RSAPSS", oidSignatureRSAPSS, pssParametersSHA512, RSA, crypto.SHA512, true},
{DSAWithSHA1, "DSA-SHA1", oidSignatureDSAWithSHA1, emptyRawValue, DSA, crypto.SHA1, false},
{DSAWithSHA256, "DSA-SHA256", oidSignatureDSAWithSHA256, emptyRawValue, DSA, crypto.SHA256, false},
{ECDSAWithSHA1, "ECDSA-SHA1", oidSignatureECDSAWithSHA1, emptyRawValue, ECDSA, crypto.SHA1, false},
{ECDSAWithSHA256, "ECDSA-SHA256", oidSignatureECDSAWithSHA256, emptyRawValue, ECDSA, crypto.SHA256, false},
{ECDSAWithSHA384, "ECDSA-SHA384", oidSignatureECDSAWithSHA384, emptyRawValue, ECDSA, crypto.SHA384, false},
{ECDSAWithSHA512, "ECDSA-SHA512", oidSignatureECDSAWithSHA512, emptyRawValue, ECDSA, crypto.SHA512, false},
{PureEd25519, "Ed25519", oidSignatureEd25519, emptyRawValue, Ed25519, crypto.Hash(0) /* no pre-hashing */, false},
}
var emptyRawValue = asn1.RawValue{}
// DER encoded RSA PSS parameters for the
// SHA256, SHA384, and SHA512 hashes as defined in RFC 3447, Appendix A.2.3.
// The parameters contain the following values:
// - hashAlgorithm contains the associated hash identifier with NULL parameters
// - maskGenAlgorithm always contains the default mgf1SHA1 identifier
// - saltLength contains the length of the associated hash
// - trailerField always contains the default trailerFieldBC value
var (
pssParametersSHA256 = asn1.RawValue{FullBytes: []byte{48, 52, 160, 15, 48, 13, 6, 9, 96, 134, 72, 1, 101, 3, 4, 2, 1, 5, 0, 161, 28, 48, 26, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 8, 48, 13, 6, 9, 96, 134, 72, 1, 101, 3, 4, 2, 1, 5, 0, 162, 3, 2, 1, 32}}
pssParametersSHA384 = asn1.RawValue{FullBytes: []byte{48, 52, 160, 15, 48, 13, 6, 9, 96, 134, 72, 1, 101, 3, 4, 2, 2, 5, 0, 161, 28, 48, 26, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 8, 48, 13, 6, 9, 96, 134, 72, 1, 101, 3, 4, 2, 2, 5, 0, 162, 3, 2, 1, 48}}
pssParametersSHA512 = asn1.RawValue{FullBytes: []byte{48, 52, 160, 15, 48, 13, 6, 9, 96, 134, 72, 1, 101, 3, 4, 2, 3, 5, 0, 161, 28, 48, 26, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 8, 48, 13, 6, 9, 96, 134, 72, 1, 101, 3, 4, 2, 3, 5, 0, 162, 3, 2, 1, 64}}
)
// pssParameters reflects the parameters in an AlgorithmIdentifier that
// specifies RSA PSS. See RFC 3447, 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"`
}
func getSignatureAlgorithmFromAI(ai pkix.AlgorithmIdentifier) stdx509.SignatureAlgorithm {
if ai.Algorithm.Equal(oidSignatureEd25519) {
// RFC 8410, Section 3
// > For all of the OIDs, the parameters MUST be absent.
if len(ai.Parameters.FullBytes) != 0 {
return stdx509.UnknownSignatureAlgorithm
}
}
if !ai.Algorithm.Equal(oidSignatureRSAPSS) {
for _, details := range signatureAlgorithmDetails {
if ai.Algorithm.Equal(details.oid) {
return stdx509.SignatureAlgorithm(details.algo)
}
}
return stdx509.UnknownSignatureAlgorithm
}
// RSA PSS is special because it encodes important parameters
// in the Parameters.
var params pssParameters
if _, err := asn1.Unmarshal(ai.Parameters.FullBytes, &params); err != nil {
return stdx509.UnknownSignatureAlgorithm
}
var mgf1HashFunc pkix.AlgorithmIdentifier
if _, err := asn1.Unmarshal(params.MGF.Parameters.FullBytes, &mgf1HashFunc); err != nil {
return stdx509.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 RFC 3447, Section 8.1), that the
// salt length matches the hash length, and that the trailer field has the
// default value.
if (len(params.Hash.Parameters.FullBytes) != 0 && !bytes.Equal(params.Hash.Parameters.FullBytes, asn1.NullBytes)) ||
!params.MGF.Algorithm.Equal(oidMGF1) ||
!mgf1HashFunc.Algorithm.Equal(params.Hash.Algorithm) ||
(len(mgf1HashFunc.Parameters.FullBytes) != 0 && !bytes.Equal(mgf1HashFunc.Parameters.FullBytes, asn1.NullBytes)) ||
params.TrailerField != 1 {
return stdx509.UnknownSignatureAlgorithm
}
switch {
case params.Hash.Algorithm.Equal(oidSHA256) && params.SaltLength == 32:
return stdx509.SHA256WithRSAPSS
case params.Hash.Algorithm.Equal(oidSHA384) && params.SaltLength == 48:
return stdx509.SHA384WithRSAPSS
case params.Hash.Algorithm.Equal(oidSHA512) && params.SaltLength == 64:
return stdx509.SHA512WithRSAPSS
}
return stdx509.UnknownSignatureAlgorithm
}
var (
// RFC 3279, 2.3 Public Key Algorithms
//
// pkcs-1 OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
// rsadsi(113549) pkcs(1) 1 }
//
// rsaEncryption OBJECT IDENTIFIER ::== { pkcs1-1 1 }
//
// id-dsa OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
// x9-57(10040) x9cm(4) 1 }
oidPublicKeyRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
oidPublicKeyDSA = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1}
// RFC 5480, 2.1.1 Unrestricted Algorithm Identifier and Parameters
//
// id-ecPublicKey OBJECT IDENTIFIER ::= {
// iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 }
oidPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
// RFC 8410, Section 3
//
// id-X25519 OBJECT IDENTIFIER ::= { 1 3 101 110 }
// id-Ed25519 OBJECT IDENTIFIER ::= { 1 3 101 112 }
oidPublicKeyX25519 = asn1.ObjectIdentifier{1, 3, 101, 110}
oidPublicKeyEd25519 = asn1.ObjectIdentifier{1, 3, 101, 112}
)
// getPublicKeyAlgorithmFromOID returns the exposed PublicKeyAlgorithm
// identifier for public key types supported in certificates and CSRs. Marshal
// and Parse functions may support a different set of public key types.
func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) stdx509.PublicKeyAlgorithm {
switch {
case oid.Equal(oidPublicKeyRSA):
return stdx509.RSA
case oid.Equal(oidPublicKeyDSA):
return stdx509.DSA
case oid.Equal(oidPublicKeyECDSA):
return stdx509.ECDSA
case oid.Equal(oidPublicKeyEd25519):
return stdx509.Ed25519
}
return stdx509.UnknownPublicKeyAlgorithm
}
// RFC 5480, 2.1.1.1. Named Curve
//
// secp224r1 OBJECT IDENTIFIER ::= {
// iso(1) identified-organization(3) certicom(132) curve(0) 33 }
//
// secp256r1 OBJECT IDENTIFIER ::= {
// iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3)
// prime(1) 7 }
//
// secp384r1 OBJECT IDENTIFIER ::= {
// iso(1) identified-organization(3) certicom(132) curve(0) 34 }
//
// secp521r1 OBJECT IDENTIFIER ::= {
// iso(1) identified-organization(3) certicom(132) curve(0) 35 }
//
// NB: secp256r1 is equivalent to prime256v1
var (
oidNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33}
oidNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7}
oidNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34}
oidNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35}
)
func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve {
switch {
case oid.Equal(oidNamedCurveP224):
return elliptic.P224()
case oid.Equal(oidNamedCurveP256):
return elliptic.P256()
case oid.Equal(oidNamedCurveP384):
return elliptic.P384()
case oid.Equal(oidNamedCurveP521):
return elliptic.P521()
}
return nil
}
// KeyUsage represents the set of actions that are valid for a given key. It's
// a bitmap of the KeyUsage* constants.
type KeyUsage int
const (
KeyUsageDigitalSignature KeyUsage = 1 << iota
KeyUsageContentCommitment
KeyUsageKeyEncipherment
KeyUsageDataEncipherment
KeyUsageKeyAgreement
KeyUsageCertSign
KeyUsageCRLSign
KeyUsageEncipherOnly
KeyUsageDecipherOnly
)
// RFC 5280, 4.2.1.12 Extended Key Usage
//
// anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 }
//
// id-kp OBJECT IDENTIFIER ::= { id-pkix 3 }
//
// id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 }
// id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 }
// id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 }
// id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 }
// id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 }
// id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 }
var (
oidExtKeyUsageAny = asn1.ObjectIdentifier{2, 5, 29, 37, 0}
oidExtKeyUsageServerAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 1}
oidExtKeyUsageClientAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 2}
oidExtKeyUsageCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 3}
oidExtKeyUsageEmailProtection = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 4}
oidExtKeyUsageIPSECEndSystem = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 5}
oidExtKeyUsageIPSECTunnel = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 6}
oidExtKeyUsageIPSECUser = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 7}
oidExtKeyUsageTimeStamping = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 8}
oidExtKeyUsageOCSPSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 9}
oidExtKeyUsageMicrosoftServerGatedCrypto = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 10, 3, 3}
oidExtKeyUsageNetscapeServerGatedCrypto = asn1.ObjectIdentifier{2, 16, 840, 1, 113730, 4, 1}
oidExtKeyUsageMicrosoftCommercialCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 2, 1, 22}
oidExtKeyUsageMicrosoftKernelCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 61, 1, 1}
)
// ExtKeyUsage represents an extended set of actions that are valid for a given key.
// Each of the ExtKeyUsage* constants define a unique action.
type ExtKeyUsage int
const (
ExtKeyUsageAny ExtKeyUsage = iota
ExtKeyUsageServerAuth
ExtKeyUsageClientAuth
ExtKeyUsageCodeSigning
ExtKeyUsageEmailProtection
ExtKeyUsageIPSECEndSystem
ExtKeyUsageIPSECTunnel
ExtKeyUsageIPSECUser
ExtKeyUsageTimeStamping
ExtKeyUsageOCSPSigning
ExtKeyUsageMicrosoftServerGatedCrypto
ExtKeyUsageNetscapeServerGatedCrypto
ExtKeyUsageMicrosoftCommercialCodeSigning
ExtKeyUsageMicrosoftKernelCodeSigning
)
// extKeyUsageOIDs contains the mapping between an ExtKeyUsage and its OID.
var extKeyUsageOIDs = []struct {
extKeyUsage ExtKeyUsage
oid asn1.ObjectIdentifier
}{
{ExtKeyUsageAny, oidExtKeyUsageAny},
{ExtKeyUsageServerAuth, oidExtKeyUsageServerAuth},
{ExtKeyUsageClientAuth, oidExtKeyUsageClientAuth},
{ExtKeyUsageCodeSigning, oidExtKeyUsageCodeSigning},
{ExtKeyUsageEmailProtection, oidExtKeyUsageEmailProtection},
{ExtKeyUsageIPSECEndSystem, oidExtKeyUsageIPSECEndSystem},
{ExtKeyUsageIPSECTunnel, oidExtKeyUsageIPSECTunnel},
{ExtKeyUsageIPSECUser, oidExtKeyUsageIPSECUser},
{ExtKeyUsageTimeStamping, oidExtKeyUsageTimeStamping},
{ExtKeyUsageOCSPSigning, oidExtKeyUsageOCSPSigning},
{ExtKeyUsageMicrosoftServerGatedCrypto, oidExtKeyUsageMicrosoftServerGatedCrypto},
{ExtKeyUsageNetscapeServerGatedCrypto, oidExtKeyUsageNetscapeServerGatedCrypto},
{ExtKeyUsageMicrosoftCommercialCodeSigning, oidExtKeyUsageMicrosoftCommercialCodeSigning},
{ExtKeyUsageMicrosoftKernelCodeSigning, oidExtKeyUsageMicrosoftKernelCodeSigning},
}
func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) {
for _, pair := range extKeyUsageOIDs {
if oid.Equal(pair.oid) {
return pair.extKeyUsage, true
}
}
return
}
const (
nameTypeEmail = 1
nameTypeDNS = 2
nameTypeURI = 6
nameTypeIP = 7
)
var (
oidExtensionAuthorityInfoAccess = []int{1, 3, 6, 1, 5, 5, 7, 1, 1}
)
var (
oidAuthorityInfoAccessOcsp = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 1}
oidAuthorityInfoAccessIssuers = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 2}
)
func isIA5String(s string) error {
for _, r := range s {
// Per RFC5280 "IA5String is limited to the set of ASCII characters"
if r > unicode.MaxASCII {
return fmt.Errorf("x509: %q cannot be encoded as an IA5String", s)
}
}
return nil
}