updating gopkg.in/square/go-jose.v2 to v2.2.2

go.mod

@@ -436,7 +436,7 @@ replace (
 	gopkg.in/inf.v0 => gopkg.in/inf.v0 v0.9.0
 	gopkg.in/mcuadros/go-syslog.v2 => gopkg.in/mcuadros/go-syslog.v2 v2.2.1
 	gopkg.in/natefinch/lumberjack.v2 => gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7
-	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84
+	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.2.2
 	gopkg.in/tomb.v1 => gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7
 	gopkg.in/warnings.v0 => gopkg.in/warnings.v0 v0.1.1
 	gopkg.in/yaml.v1 => gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0

go.sum

@@ -456,8 +456,8 @@ gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/mcuadros/go-syslog.v2 v2.2.1/go.mod h1:l5LPIyOOyIdQquNg+oU6Z3524YwrcqEm0aKH+5zpt2U=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7 h1:986b60BAz5vO2Vaf48yQaq+wb2bU4JsXxKu1+itW6x8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84 h1:ELQJ5WuT+ydETLCpWvAuw8iGBQRGoJq+A3RAbbAcZUY=
+gopkg.in/square/go-jose.v2 v2.2.2 h1:orlkJ3myw8CN1nVQHBFfloD+L3egixIa4FvUP6RosSA=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/warnings.v0 v0.1.1 h1:XM28wIgFzaBmeZ5dNHIpWLQpt/9DGKxk+rCg/22nnYE=

staging/src/k8s.io/apiextensions-apiserver/go.mod

@@ -49,7 +49,6 @@ replace (
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20190209173611-3b5209105503
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190313210603-aa82965741a9
 	gopkg.in/natefinch/lumberjack.v2 => gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7
-	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84
 	gopkg.in/yaml.v2 => gopkg.in/yaml.v2 v2.2.1
 	k8s.io/api => ../api
 	k8s.io/apiextensions-apiserver => ../apiextensions-apiserver

staging/src/k8s.io/apiextensions-apiserver/go.sum

@@ -238,7 +238,7 @@ gopkg.in/inf.v0 v0.9.0 h1:3zYtXIO92bvsdS3ggAdA8Gb4Azj0YU+TVY1uGYNFA8o=
 gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7 h1:986b60BAz5vO2Vaf48yQaq+wb2bU4JsXxKu1+itW6x8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0 h1:POO/ycCATvegFmVuPpQzZFJ+pGZeX22Ufu6fibxDVjU=

staging/src/k8s.io/apiserver/go.mod

@@ -78,7 +78,6 @@ replace (
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20190209173611-3b5209105503
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190313210603-aa82965741a9
 	gopkg.in/natefinch/lumberjack.v2 => gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7
-	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84
 	gopkg.in/yaml.v2 => gopkg.in/yaml.v2 v2.2.1
 	k8s.io/api => ../api
 	k8s.io/apimachinery => ../apimachinery

staging/src/k8s.io/apiserver/go.sum

@@ -182,8 +182,8 @@ gopkg.in/inf.v0 v0.9.0 h1:3zYtXIO92bvsdS3ggAdA8Gb4Azj0YU+TVY1uGYNFA8o=
 gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7 h1:986b60BAz5vO2Vaf48yQaq+wb2bU4JsXxKu1+itW6x8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84 h1:ELQJ5WuT+ydETLCpWvAuw8iGBQRGoJq+A3RAbbAcZUY=
+gopkg.in/square/go-jose.v2 v2.2.2 h1:orlkJ3myw8CN1nVQHBFfloD+L3egixIa4FvUP6RosSA=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0 h1:POO/ycCATvegFmVuPpQzZFJ+pGZeX22Ufu6fibxDVjU=

staging/src/k8s.io/kube-aggregator/go.mod

@@ -37,7 +37,6 @@ replace (
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20190209173611-3b5209105503
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190313210603-aa82965741a9
 	gopkg.in/natefinch/lumberjack.v2 => gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7
-	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84
 	gopkg.in/yaml.v2 => gopkg.in/yaml.v2 v2.2.1
 	k8s.io/api => ../api
 	k8s.io/apimachinery => ../apimachinery

staging/src/k8s.io/kube-aggregator/go.sum

@@ -215,7 +215,7 @@ gopkg.in/inf.v0 v0.9.0 h1:3zYtXIO92bvsdS3ggAdA8Gb4Azj0YU+TVY1uGYNFA8o=
 gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7 h1:986b60BAz5vO2Vaf48yQaq+wb2bU4JsXxKu1+itW6x8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0 h1:POO/ycCATvegFmVuPpQzZFJ+pGZeX22Ufu6fibxDVjU=

staging/src/k8s.io/sample-apiserver/go.mod

@@ -27,7 +27,6 @@ replace (
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20190209173611-3b5209105503
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190313210603-aa82965741a9
 	gopkg.in/natefinch/lumberjack.v2 => gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7
-	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84
 	gopkg.in/yaml.v2 => gopkg.in/yaml.v2 v2.2.1
 	k8s.io/api => ../api
 	k8s.io/apimachinery => ../apimachinery

staging/src/k8s.io/sample-apiserver/go.sum

@@ -212,7 +212,7 @@ gopkg.in/inf.v0 v0.9.0 h1:3zYtXIO92bvsdS3ggAdA8Gb4Azj0YU+TVY1uGYNFA8o=
 gopkg.in/inf.v0 v0.9.0/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7 h1:986b60BAz5vO2Vaf48yQaq+wb2bU4JsXxKu1+itW6x8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
-gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0 h1:POO/ycCATvegFmVuPpQzZFJ+pGZeX22Ufu6fibxDVjU=

vendor/BUILD

@@ -361,6 +361,7 @@ filegroup(
         "//vendor/golang.org/x/crypto/internal/subtle:all-srcs",
         "//vendor/golang.org/x/crypto/nacl/secretbox:all-srcs",
         "//vendor/golang.org/x/crypto/ocsp:all-srcs",
+        "//vendor/golang.org/x/crypto/pbkdf2:all-srcs",
         "//vendor/golang.org/x/crypto/pkcs12:all-srcs",
         "//vendor/golang.org/x/crypto/poly1305:all-srcs",
         "//vendor/golang.org/x/crypto/salsa20/salsa:all-srcs",

vendor/golang.org/x/crypto/pbkdf2/BUILD

@@ -0,0 +1,23 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["pbkdf2.go"],
+    importmap = "k8s.io/kubernetes/vendor/golang.org/x/crypto/pbkdf2",
+    importpath = "golang.org/x/crypto/pbkdf2",
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go

@@ -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]
+}

vendor/gopkg.in/square/go-jose.v2/.travis.yml

@@ -14,7 +14,6 @@ go:
 - '1.8.x'
 - '1.9.x'
 - '1.10.x'
-- tip
 
 go_import_path: gopkg.in/square/go-jose.v2
 

vendor/gopkg.in/square/go-jose.v2/BUG-BOUNTY.md

@@ -6,5 +6,5 @@ can make. We therefore encourage reporting security issues with the code
 contained in this repository.
 
 If you believe you have discovered a security vulnerability, please follow the
-guidelines at <https://hackerone.com/square-open-source>.
+guidelines at <https://bugcrowd.com/squareopensource>.
 

vendor/gopkg.in/square/go-jose.v2/BUILD

@@ -20,6 +20,7 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/golang.org/x/crypto/ed25519:go_default_library",
+        "//vendor/golang.org/x/crypto/pbkdf2:go_default_library",
         "//vendor/gopkg.in/square/go-jose.v2/cipher:go_default_library",
         "//vendor/gopkg.in/square/go-jose.v2/json:go_default_library",
     ],

vendor/gopkg.in/square/go-jose.v2/README.md

@@ -3,8 +3,8 @@
 [![godoc](http://img.shields.io/badge/godoc-version_1-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v1)
 [![godoc](http://img.shields.io/badge/godoc-version_2-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v2)
 [![license](http://img.shields.io/badge/license-apache_2.0-blue.svg?style=flat)](https://raw.githubusercontent.com/square/go-jose/master/LICENSE)
-[![build](https://travis-ci.org/square/go-jose.svg?branch=master)](https://travis-ci.org/square/go-jose)
+[![build](https://travis-ci.org/square/go-jose.svg?branch=v2)](https://travis-ci.org/square/go-jose)
-[![coverage](https://coveralls.io/repos/github/square/go-jose/badge.svg?branch=master)](https://coveralls.io/r/square/go-jose)
+[![coverage](https://coveralls.io/repos/github/square/go-jose/badge.svg?branch=v2)](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,
@@ -40,24 +40,17 @@ libraries in other languages.
 
 We use [gopkg.in](https://gopkg.in) for versioning.
 
-[Version 1](https://gopkg.in/square/go-jose.v1) is the old stable version:
+[Version 2](https://gopkg.in/square/go-jose.v2)
-
+([branch](https://github.com/square/go-jose/tree/v2),
-    import "gopkg.in/square/go-jose.v1"
+[doc](https://godoc.org/gopkg.in/square/go-jose.v2)) is the current version:
-
-[Version 2](https://gopkg.in/square/go-jose.v2) is for new development:
 
     import "gopkg.in/square/go-jose.v2"
 
-The interface for [go-jose.v1](https://gopkg.in/square/go-jose.v1) will remain
+The old `v1` branch ([go-jose.v1](https://gopkg.in/square/go-jose.v1)) will
-backwards compatible. No new feature development will take place on the `v1` branch,
+still receive backported bug fixes and security fixes, but otherwise
-however bug fixes and security fixes will be backported.
+development is frozen. All new feature development takes place on the `v2`
-
+branch. Version 2 also contains additional sub-packages such as the
-The interface for [go-jose.v2](https://gopkg.in/square/go-jose.v2) is mostly 
+[jwt](https://godoc.org/gopkg.in/square/go-jose.v2/jwt) implementation
-stable, but we suggest pinning to a particular revision for now as we still reserve
-the right to make changes. New feature development happens on this branch.
-
-New in [go-jose.v2](https://gopkg.in/square/go-jose.v2) is a
-[jwt](https://godoc.org/gopkg.in/square/go-jose.v2/jwt) sub-package
 contributed by [@shaxbee](https://github.com/shaxbee).
 
 ### Supported algorithms
@@ -84,7 +77,9 @@ standard where possible. The Godoc reference has a list of constants.
  RSASSA-PSS                 | PS256, PS384, PS512
  HMAC                       | HS256, HS384, HS512
  ECDSA                      | ES256, ES384, ES512
- Ed25519                    | EdDSA
+ Ed25519                    | EdDSA<sup>2</sup>
+
+<sup>2. Only available in version 2 of the package</sup>
 
  Content encryption         | Algorithm identifier(s)
  :------------------------- | :------------------------------
@@ -106,8 +101,11 @@ allows attaching a key id.
  :------------------------- | -------------------------------
  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
 
 [![godoc](http://img.shields.io/badge/godoc-version_1-blue.svg?style=flat)](https://godoc.org/gopkg.in/square/go-jose.v1)

vendor/gopkg.in/square/go-jose.v2/asymmetric.go

@@ -195,11 +195,11 @@ func (ctx rsaEncrypterVerifier) encryptKey(cek []byte, alg KeyAlgorithm) (recipi
 func (ctx rsaEncrypterVerifier) encrypt(cek []byte, alg KeyAlgorithm) ([]byte, error) {
 	switch alg {
 	case RSA1_5:
-		return rsa.EncryptPKCS1v15(randReader, ctx.publicKey, cek)
+		return rsa.EncryptPKCS1v15(RandReader, ctx.publicKey, cek)
 	case RSA_OAEP:
-		return rsa.EncryptOAEP(sha1.New(), randReader, ctx.publicKey, cek, []byte{})
+		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 rsa.EncryptOAEP(sha256.New(), RandReader, ctx.publicKey, cek, []byte{})
 	}
 
 	return nil, ErrUnsupportedAlgorithm
@@ -285,9 +285,9 @@ func (ctx rsaDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm
 
 	switch alg {
 	case RS256, RS384, RS512:
-		out, err = rsa.SignPKCS1v15(randReader, ctx.privateKey, hash, hashed)
+		out, err = rsa.SignPKCS1v15(RandReader, ctx.privateKey, hash, hashed)
 	case PS256, PS384, PS512:
-		out, err = rsa.SignPSS(randReader, ctx.privateKey, hash, hashed, &rsa.PSSOptions{
+		out, err = rsa.SignPSS(RandReader, ctx.privateKey, hash, hashed, &rsa.PSSOptions{
 			SaltLength: rsa.PSSSaltLengthAuto,
 		})
 	}
@@ -388,7 +388,7 @@ func (ctx ecKeyGenerator) keySize() int {
 
 // Get a content encryption key for ECDH-ES
 func (ctx ecKeyGenerator) genKey() ([]byte, rawHeader, error) {
-	priv, err := ecdsa.GenerateKey(ctx.publicKey.Curve, randReader)
+	priv, err := ecdsa.GenerateKey(ctx.publicKey.Curve, RandReader)
 	if err != nil {
 		return nil, rawHeader{}, err
 	}
@@ -472,7 +472,7 @@ func (ctx edDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm)
 		return Signature{}, ErrUnsupportedAlgorithm
 	}
 
-	sig, err := ctx.privateKey.Sign(randReader, payload, crypto.Hash(0))
+	sig, err := ctx.privateKey.Sign(RandReader, payload, crypto.Hash(0))
 	if err != nil {
 		return Signature{}, err
 	}
@@ -522,7 +522,7 @@ func (ctx ecDecrypterSigner) signPayload(payload []byte, alg SignatureAlgorithm)
 	_, _ = hasher.Write(payload)
 	hashed := hasher.Sum(nil)
 
-	r, s, err := ecdsa.Sign(randReader, ctx.privateKey, hashed)
+	r, s, err := ecdsa.Sign(RandReader, ctx.privateKey, hashed)
 	if err != nil {
 		return Signature{}, err
 	}

vendor/gopkg.in/square/go-jose.v2/crypter.go

@@ -104,10 +104,18 @@ func (eo *EncrypterOptions) WithType(typ ContentType) *EncrypterOptions {
 }
 
 // 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
@@ -143,6 +151,9 @@ func NewEncrypter(enc ContentEncryption, rcpt Recipient, opts *EncrypterOptions)
 		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),
 		}
@@ -228,6 +239,14 @@ func (ctx *genericEncrypter) addRecipient(recipient Recipient) (err error) {
 		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)
 	}
@@ -242,6 +261,8 @@ func makeJWERecipient(alg KeyAlgorithm, encryptionKey interface{}) (recipientKey
 		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
@@ -266,6 +287,10 @@ func newDecrypter(decryptionKey interface{}) (keyDecrypter, error) {
 		return &symmetricKeyCipher{
 			key: decryptionKey,
 		}, nil
+	case string:
+		return &symmetricKeyCipher{
+			key: []byte(decryptionKey),
+		}, nil
 	case JSONWebKey:
 		return newDecrypter(decryptionKey.Key)
 	case *JSONWebKey:

vendor/gopkg.in/square/go-jose.v2/encoding.go

@@ -21,10 +21,11 @@ import (
 	"compress/flate"
 	"encoding/base64"
 	"encoding/binary"
-	"encoding/json"
 	"io"
 	"math/big"
 	"regexp"
+
+	"gopkg.in/square/go-jose.v2/json"
 )
 
 var stripWhitespaceRegex = regexp.MustCompile("\\s")

vendor/gopkg.in/square/go-jose.v2/jwe.go

@@ -18,9 +18,10 @@ package jose
 
 import (
 	"encoding/base64"
-	"encoding/json"
 	"fmt"
 	"strings"
+
+	"gopkg.in/square/go-jose.v2/json"
 )
 
 // rawJSONWebEncryption represents a raw JWE JSON object. Used for parsing/serializing.
@@ -85,10 +86,12 @@ func (obj JSONWebEncryption) mergedHeaders(recipient *recipientInfo) rawHeader {
 func (obj JSONWebEncryption) computeAuthData() []byte {
 	var protected string
 
-	if obj.original != nil {
+	if obj.original != nil && obj.original.Protected != nil {
 		protected = obj.original.Protected.base64()
-	} else {
+	} else if obj.protected != nil {
 		protected = base64.RawURLEncoding.EncodeToString(mustSerializeJSON((obj.protected)))
+	} else {
+		protected = ""
 	}
 
 	output := []byte(protected)

vendor/gopkg.in/square/go-jose.v2/jwk.go

@@ -189,6 +189,10 @@ func ecThumbprintInput(curve elliptic.Curve, x, y *big.Int) (string, error) {
 		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
@@ -202,6 +206,9 @@ func rsaThumbprintInput(n *big.Int, e int) (string, error) {
 
 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
 }
@@ -346,6 +353,17 @@ func (key rawJSONWebKey) ecPublicKey() (*ecdsa.PublicKey, error) {
 		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()
 
@@ -482,6 +500,16 @@ func fromRsaPrivateKey(rsa *rsa.PrivateKey) (*rawJSONWebKey, error) {
 	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
 }
 
@@ -502,6 +530,22 @@ func (key rawJSONWebKey) ecPrivateKey() (*ecdsa.PrivateKey, error) {
 		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()
 
@@ -529,11 +573,26 @@ func fromEcPrivateKey(ec *ecdsa.PrivateKey) (*rawJSONWebKey, error) {
 		return nil, fmt.Errorf("square/go-jose: invalid EC private key")
 	}
 
-	raw.D = newBuffer(ec.D.Bytes())
+	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",

vendor/gopkg.in/square/go-jose.v2/jwt/claims.go

@@ -18,9 +18,10 @@
 package jwt
 
 import (
-	"encoding/json"
 	"strconv"
 	"time"
+
+	"gopkg.in/square/go-jose.v2/json"
 )
 
 // Claims represents public claim values (as specified in RFC 7519).

vendor/gopkg.in/square/go-jose.v2/jwt/jwt.go

@@ -18,6 +18,7 @@
 package jwt
 
 import (
+	"fmt"
 	"gopkg.in/square/go-jose.v2"
 	"gopkg.in/square/go-jose.v2/json"
 	"strings"
@@ -26,6 +27,7 @@ import (
 // JSONWebToken represents a JSON Web Token (as specified in RFC7519).
 type JSONWebToken struct {
 	payload           func(k interface{}) ([]byte, error)
+	unverifiedPayload func() []byte
 	Headers           []jose.Header
 }
 
@@ -50,6 +52,22 @@ func (t *JSONWebToken) Claims(key interface{}, dest ...interface{}) error {
 	return nil
 }
 
+// UnsafeClaimsWithoutVerification deserializes the claims of a
+// JSONWebToken into the dests. For signed JWTs, the claims are not
+// verified. This function won't work for encrypted JWTs.
+func (t *JSONWebToken) UnsafeClaimsWithoutVerification(dest ...interface{}) error {
+	if t.unverifiedPayload == nil {
+		return fmt.Errorf("square/go-jose: Cannot get unverified claims")
+	}
+	claims := t.unverifiedPayload()
+	for _, d := range dest {
+		if err := json.Unmarshal(claims, d); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (t *NestedJSONWebToken) Decrypt(decryptionKey interface{}) (*JSONWebToken, error) {
 	b, err := t.enc.Decrypt(decryptionKey)
 	if err != nil {
@@ -77,6 +95,7 @@ func ParseSigned(s string) (*JSONWebToken, error) {
 
 	return &JSONWebToken{
 		payload:           sig.Verify,
+		unverifiedPayload: sig.UnsafePayloadWithoutVerification,
 		Headers:           headers,
 	}, nil
 }

vendor/gopkg.in/square/go-jose.v2/jwt/validation.go

@@ -35,7 +35,7 @@ type Expected struct {
 	Audience Audience
 	// ID matches the "jti" claim exactly.
 	ID string
-	// Time matches the "exp" and "ebf" claims with leeway.
+	// Time matches the "exp" and "nbf" claims with leeway.
 	Time time.Time
 }
 
@@ -47,6 +47,14 @@ func (e Expected) WithTime(t time.Time) Expected {
 
 // Validate checks claims in a token against expected values.
 // A default leeway value of one minute is used to compare time values.
+//
+// The default leeway will cause the token to be deemed valid until one
+// minute after the expiration time. If you're a server application that
+// wants to give an extra minute to client tokens, use this
+// function. If you're a client application wondering if the server
+// will accept your token, use ValidateWithLeeway with a leeway <=0,
+// otherwise this function might make you think a token is valid when
+// it is not.
 func (c Claims) Validate(e Expected) error {
 	return c.ValidateWithLeeway(e, DefaultLeeway)
 }
@@ -56,6 +64,15 @@ func (c Claims) Validate(e Expected) error {
 // zero value to check time values with no leeway, but you should not that
 // numeric date values are rounded to the nearest second and sub-second
 // precision is not supported.
+//
+// The leeway gives some extra time to the token from the server's
+// point of view. That is, if the token is expired, ValidateWithLeeway
+// will still accept the token for 'leeway' amount of time. This fails
+// if you're using this function to check if a server will accept your
+// token, because it will think the token is valid even after it
+// expires. So if you're a client validating if the token is valid to
+// be submitted to a server, use leeway <=0, if you're a server
+// validation a token, use leeway >=0.
 func (c Claims) ValidateWithLeeway(e Expected, leeway time.Duration) error {
 	if e.Issuer != "" && e.Issuer != c.Issuer {
 		return ErrInvalidIssuer

vendor/gopkg.in/square/go-jose.v2/shared.go

@@ -58,6 +58,11 @@ var (
 	// 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.
@@ -148,6 +153,10 @@ const (
 	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).
@@ -206,7 +215,7 @@ func (parsed rawHeader) set(k HeaderKey, v interface{}) error {
 // getString gets a string from the raw JSON, defaulting to "".
 func (parsed rawHeader) getString(k HeaderKey) string {
 	v, ok := parsed[k]
-	if !ok {
+	if !ok || v == nil {
 		return ""
 	}
 	var s string
@@ -320,6 +329,26 @@ func (parsed rawHeader) getCritical() ([]string, error) {
 	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 {

vendor/gopkg.in/square/go-jose.v2/signing.go

@@ -297,6 +297,13 @@ func (obj JSONWebSignature) Verify(verificationKey interface{}) ([]byte, error)
 	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

vendor/gopkg.in/square/go-jose.v2/symmetric.go

@@ -17,6 +17,7 @@
 package jose
 
 import (
+	"bytes"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/hmac"
@@ -29,15 +30,30 @@ import (
 	"hash"
 	"io"
 
+	"golang.org/x/crypto/pbkdf2"
 	"gopkg.in/square/go-jose.v2/cipher"
 )
 
 // Random reader (stubbed out in tests)
-var randReader = rand.Reader
+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
@@ -87,7 +103,7 @@ func newAESGCM(keySize int) contentCipher {
 func newAESCBC(keySize int) contentCipher {
 	return &aeadContentCipher{
 		keyBytes:     keySize * 2,
-		authtagBytes: 16,
+		authtagBytes: keySize,
 		getAead: func(key []byte) (cipher.AEAD, error) {
 			return josecipher.NewCBCHMAC(key, aes.NewCipher)
 		},
@@ -114,10 +130,37 @@ func getContentCipher(alg ContentEncryption) contentCipher {
 	}
 }
 
+// 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
 	}
@@ -150,7 +193,7 @@ func newSymmetricSigner(sigAlg SignatureAlgorithm, key []byte) (recipientSigInfo
 // 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)
+	_, err := io.ReadFull(RandReader, key)
 	if err != nil {
 		return nil, rawHeader{}, err
 	}
@@ -190,7 +233,7 @@ func (ctx aeadContentCipher) encrypt(key, aad, pt []byte) (*aeadParts, error) {
 
 	// Initialize a new nonce
 	iv := make([]byte, aead.NonceSize())
-	_, err = io.ReadFull(randReader, iv)
+	_, err = io.ReadFull(RandReader, iv)
 	if err != nil {
 		return nil, err
 	}
@@ -212,6 +255,10 @@ func (ctx aeadContentCipher) decrypt(key, aad []byte, parts *aeadParts) ([]byte,
 		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)
 }
 
@@ -253,6 +300,45 @@ func (ctx *symmetricKeyCipher) encryptKey(cek []byte, alg KeyAlgorithm) (recipie
 			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
@@ -295,6 +381,42 @@ func (ctx *symmetricKeyCipher) decryptKey(headers rawHeader, recipient *recipien
 			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

vendor/modules.txt

@@ -828,6 +828,7 @@ golang.org/x/crypto/internal/chacha20
 golang.org/x/crypto/internal/subtle
 golang.org/x/crypto/nacl/secretbox
 golang.org/x/crypto/ocsp
+golang.org/x/crypto/pbkdf2
 golang.org/x/crypto/pkcs12
 golang.org/x/crypto/pkcs12/internal/rc2
 golang.org/x/crypto/poly1305
@@ -1001,7 +1002,7 @@ gopkg.in/gcfg.v1/types
 gopkg.in/inf.v0
 # gopkg.in/natefinch/lumberjack.v2 v2.0.0 => gopkg.in/natefinch/lumberjack.v2 v2.0.0-20150622162204-20b71e5b60d7
 gopkg.in/natefinch/lumberjack.v2
-# gopkg.in/square/go-jose.v2 v2.2.2 => gopkg.in/square/go-jose.v2 v2.0.0-20180411045311-89060dee6a84
+# gopkg.in/square/go-jose.v2 v2.2.2 => gopkg.in/square/go-jose.v2 v2.2.2
 gopkg.in/square/go-jose.v2
 gopkg.in/square/go-jose.v2/cipher
 gopkg.in/square/go-jose.v2/json