Merge pull request #152 from ProtonMail/is-revoked

Release 2.3.0: Update go-crypto, add Key.IsRevoked and fix key.IsExpired

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.3.0] 2021-11-15
+### Added
+- `Key.IsRevoked()` to check the revocation status of a key
+### Security
+- Upgraded underlying crypto library to fix handling of revoked keys
+
 ## [2.2.5] 2021-11-11
 ### Fixed
 - Protect the global `pgp` variable fields with a lock.

constants/armor.go

@@ -3,7 +3,7 @@ package constants
 
 // Constants for armored data.
 const (
-	ArmorHeaderVersion = "GopenPGP 2.2.5"
+	ArmorHeaderVersion = "GopenPGP 2.3.0"
 	ArmorHeaderComment = "https://gopenpgp.org"
 	PGPMessageHeader   = "PGP MESSAGE"
 	PGPSignatureHeader = "PGP SIGNATURE"

constants/version.go

@@ -1,3 +1,3 @@
 package constants
 
-const Version = "2.2.5"
+const Version = "2.3.0"

crypto/key.go

@@ -276,8 +276,14 @@ func (key *Key) CanEncrypt() bool {
 
 // IsExpired checks whether the key is expired.
 func (key *Key) IsExpired() bool {
-	_, ok := key.entity.EncryptionKey(getNow())
-	return !ok
+	i := key.entity.PrimaryIdentity()
+	return key.entity.PrimaryKey.KeyExpired(i.SelfSignature, getNow()) || // primary key has expired
+		i.SelfSignature.SigExpired(getNow()) // user ID self-signature has expired
+}
+
+// IsRevoked checks whether the key or the primary identity has a valid revocation signature.
+func (key *Key) IsRevoked() bool {
+	return key.entity.Revoked(getNow()) || key.entity.PrimaryIdentity().Revoked(getNow())
 }
 
 // IsPrivate returns true if the key is private.

crypto/key_test.go

@@ -417,6 +417,23 @@ func TestKeyCapabilities(t *testing.T) {
 	assert.True(t, publicKey.CanEncrypt())
 }
 
+func TestRevokedKeyCapabilities(t *testing.T) {
+	pgp.latestServerTime = 1632219895
+	defer func() {
+		pgp.latestServerTime = testTime
+	}()
+
+	revokedKey, err := NewKeyFromArmored(readTestFile("key_revoked", false))
+	if err != nil {
+		t.Fatal("Cannot unarmor key:", err)
+	}
+
+	assert.False(t, revokedKey.CanVerify())
+	assert.False(t, revokedKey.CanEncrypt())
+	assert.False(t, revokedKey.IsExpired())
+	assert.True(t, revokedKey.IsRevoked())
+}
+
 func TestUnlockMismatchingKey(t *testing.T) {
 	privateKey, err := NewKeyFromArmored(readTestFile("key_mismatching_eddsa_key", false))
 	if err != nil {

crypto/message_test.go

@@ -173,6 +173,11 @@ func TestBinaryMessageEncryption(t *testing.T) {
 }
 
 func TestIssue11(t *testing.T) {
+	pgp.latestServerTime = 1559655272
+	defer func() {
+		pgp.latestServerTime = testTime
+	}()
+
 	var issue11Password = []byte("1234")
 
 	issue11Key, err := NewKeyFromArmored(readTestFile("issue11_privatekey", false))

crypto/testdata/key_revoked

@@ -0,0 +1,43 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: OpenPGP.js v4.10.10
+Comment: https://openpgpjs.org
+
+xsBNBGCxHHcBCAC1G33VF6Qo/bg8o0A3AfbVG7o9o2ScqXD2BReBnZW7uyaJ
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+u0k2ARLoGCd3onY0V3o5s6LHnAEIAKvJYi5PTDdBa1rWuGRc5MEPh60aKw2B
+iBF6Z+gPBxzlAFBuPVN4JTpCXYL5XHqpGpWYj0VzyJWzTNi8LbIRQFUxxNzd
+xBiziciFGDA/2ERmoJ3vFhNUcX+VYs44lEl9slx7h4d15BlmwiwxNE+76cPw
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+SS5WaK1AYpvQpv2Auv838L7B121nixfPXpSKLh9cWmxhyHjTNc/hm8njq96r
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+UU8bv2f6h4GT15oxIh09xR+PDtnlWwBxf4t4feNeCNzqyqUKt7eIBoh6u6pn
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+oKqUWLar3SVblm9Z0rZ4QpPYD02YuQh/fvP0ArK8YA==
+=iGbb
+-----END PGP PUBLIC KEY BLOCK-----

go.mod

@@ -3,12 +3,12 @@ module github.com/ProtonMail/gopenpgp/v2
 go 1.15
 
 require (
-	github.com/ProtonMail/go-crypto v0.0.0-20210920160938-87db9fbc61c7
+	github.com/ProtonMail/go-crypto v0.0.0-20211112122917-428f8eabeeb3
 	github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a
 	github.com/pkg/errors v0.9.1
 	github.com/stretchr/testify v1.4.0
 	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
 	golang.org/x/mobile v0.0.0-20200801112145-973feb4309de
 )
 
-replace golang.org/x/mobile => github.com/ProtonMail/go-mobile v0.0.0-20210326110230-f181c70e4e2b
+replace golang.org/x/mobile => github.com/ProtonMail/go-mobile v0.0.0-20210326110230-f181c70e4e2b

go.sum

@@ -1,13 +1,6 @@
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802 h1:1BDTz0u9nC3//pOCMdNH+CiXJVYJh5UQNCOBG7jbELc=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7 h1:YoJbenK9C67SkzkDfmQuVln04ygHj3vjZfd9FL+GmQQ=
-github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
-github.com/ProtonMail/go-crypto v0.0.0-20210503074116-6a33223a51e6 h1:GAvhO5jJ2YkkyKuCWa2VKuHHpyZZjKgkcPvj913Mt40=
-github.com/ProtonMail/go-crypto v0.0.0-20210503074116-6a33223a51e6/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
-github.com/ProtonMail/go-crypto v0.0.0-20210512092938-c05353c2d58c h1:bNpaLLv2Y4kslsdkdCwAYu8Bak1aGVtxwi8Z/wy4Yuo=
-github.com/ProtonMail/go-crypto v0.0.0-20210512092938-c05353c2d58c/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
-github.com/ProtonMail/go-crypto v0.0.0-20210920160938-87db9fbc61c7 h1:DSqTh6nEes/uO8BlNcGk8PzZsxY2sN9ZL//veWBdTRI=
-github.com/ProtonMail/go-crypto v0.0.0-20210920160938-87db9fbc61c7/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
+github.com/ProtonMail/go-crypto v0.0.0-20211112122917-428f8eabeeb3 h1:XcF0cTDJeiuZ5NU8w7WUDge0HRwwNRmxj/GGk6KSA6g=
+github.com/ProtonMail/go-crypto v0.0.0-20211112122917-428f8eabeeb3/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a h1:W6RrgN/sTxg1msqzFFb+G80MFmpjMw61IU+slm+wln4=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a/go.mod h1:NYt+V3/4rEeDuaev/zw1zCq8uqVEuPHzDPo3OZrlGJ4=
 github.com/ProtonMail/go-mobile v0.0.0-20210326110230-f181c70e4e2b h1:XVeh08xp93T+xK6rzpCSQTZ+LwEo+ASHvOifrQ5ZgEE=
@@ -19,47 +12,24 @@ github.com/hashicorp/go-version v1.2.1 h1:zEfKbn2+PDgroKdiOzqiE8rsmLqU2uwi5PB5pB
 github.com/hashicorp/go-version v1.2.1/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
-github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8=
-github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
-github.com/mattn/go-colorable v0.0.0-20170327083344-ded68f7a9561 h1:isR/L+BIZ+rqODWYR/f526ygrBMGKZYFhaaFRDGvuZ8=
-github.com/mattn/go-colorable v0.0.0-20170327083344-ded68f7a9561/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
-github.com/mattn/go-isatty v0.0.3 h1:ns/ykhmWi7G9O+8a448SecJU3nSMBXJfqQkl0upE1jI=
-github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
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-github.com/spf13/cobra v0.0.0-20170417170307-b6cb39589372/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
-github.com/spf13/pflag v0.0.0-20170417173400-9e4c21054fa1 h1:7bozMfSdo41n2NOc0GsVTTVUiA+Ncaj6pXNpm4UHKys=
-github.com/spf13/pflag v0.0.0-20170417173400-9e4c21054fa1/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
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 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-go.starlark.net v0.0.0-20200821142938-949cc6f4b097 h1:YiRMXXgG+Pg26t1fjq+iAjaauKWMC9cmGFrtOEuwDDg=
-go.starlark.net v0.0.0-20200821142938-949cc6f4b097/go.mod h1:f0znQkUKRrkk36XxWbGjMqQM8wGv/xHBVE2qc3B5oFU=
-golang.org/x/arch v0.0.0-20190927153633-4e8777c89be4 h1:QlVATYS7JBoZMVaf+cNjb90WD/beKVHnIxFKT4QaHVI=
-golang.org/x/arch v0.0.0-20190927153633-4e8777c89be4/go.mod h1:flIaEI6LNU6xOCD5PaJvn9wGP0agmIOqjrtsKGRguv4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2 h1:It14KIkyBFYkHkwZ7k45minvA9aorojkyjGk9KJ5B/w=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
-golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56 h1:estk1glOnSVeJ9tdEZZc5mAMDZk5lNJNyJ6DvrBkTEU=
 golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56/go.mod h1:JhuoJpWY28nO4Vef9tZUw9qufEGTyX1+7lmHxV5q5G4=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
-golang.org/x/image v0.0.0-20190802002840-cff245a6509b h1:+qEpEAPhDZ1o0x3tHzZTQDArnOixOzGD9HUJfcg0mb4=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
@@ -68,16 +38,13 @@ golang.org/x/mod v0.1.1-0.20191209134235-331c550502dd/go.mod h1:s0Qsj1ACt9ePp/hM
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 h1:qWPm9rbaAMKs8Bq/9LRpbMqxWRVUAQwMI9fVrssnTfw=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 h1:nxC68pudNYkKU6jWhgrqdreuFiOQWj1Fs7T3VrH4Pjw=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@@ -95,5 +62,3 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-qgithub.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=