refactor: migrate to openpgp/v3 library

go.mod

@@ -3,7 +3,7 @@ module github.com/cosi-project/runtime
 go 1.26.5
 
 require (
-	github.com/ProtonMail/gopenpgp/v2 v2.10.0
+	github.com/ProtonMail/gopenpgp/v3 v3.4.1
 	github.com/cenkalti/backoff/v4 v4.3.0
 	github.com/gertd/go-pluralize v0.2.1
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0
@@ -27,11 +27,9 @@ require (
 
 require (
 	github.com/ProtonMail/go-crypto v1.4.1 // indirect
-	github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f // indirect
 	github.com/cloudflare/circl v1.6.4 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	golang.org/x/crypto v0.54.0 // indirect

go.sum

@@ -1,9 +1,7 @@
 github.com/ProtonMail/go-crypto v1.4.1 h1:9RfcZHqEQUvP8RzecWEUafnZVtEvrBVL9BiF67IQOfM=
 github.com/ProtonMail/go-crypto v1.4.1/go.mod h1:e1OaTyu5SYVrO9gKOEhTc+5UcXtTUa+P3uLudwcgPqo=
-github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f h1:tCbYj7/299ekTTXpdwKYF8eBlsYsDVoggDAuAjoK66k=
-github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f/go.mod h1:gcr0kNtGBqin9zDW9GOHcVntrwnjrK+qdJ06mWYBybw=
-github.com/ProtonMail/gopenpgp/v2 v2.10.0 h1:llCzLvntC9+iH+if/na4AgKTef/Zm4vpaRrR3+JdKvo=
-github.com/ProtonMail/gopenpgp/v2 v2.10.0/go.mod h1:dc0h9Pg3ftfN0U4pfRzujilfh61A2R52wgMkZWcWm2I=
+github.com/ProtonMail/gopenpgp/v3 v3.4.1 h1:K7uUhSHSJxORZ+RuHpilTT6S4MA2whCRlXNwLqd0+ys=
+github.com/ProtonMail/gopenpgp/v3 v3.4.1/go.mod h1:bGdV9f6edhmd581wzXsQCTKdH8bXBbyhkgDKPjwPc6U=
 github.com/brianvoe/gofakeit/v7 v7.7.3 h1:RWOATEGpJ5EVg2nN8nlaEyaV/aB4d6c3GqYrbqQekss=
 github.com/brianvoe/gofakeit/v7 v7.7.3/go.mod h1:QXuPeBw164PJCzCUZVmgpgHJ3Llj49jSLVkKPMtxtxA=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
@@ -35,12 +33,10 @@ github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+l
 github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
 github.com/klauspost/compress v1.19.2 h1:hMRETovs/pu/dVWN7zIT1PGG8t509MwT6bO7XSi26R8=
 github.com/klauspost/compress v1.19.2/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 h1:GFCKgmp0tecUJ0sJuv4pzYCqS9+RGSn52M3FUwPs+uo=
 github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10/go.mod h1:t/avpk3KcrXxUnYOhZhMXJlSEyie6gQbtLq5NM3loB8=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -55,7 +51,6 @@ github.com/siderolabs/protoenc v0.2.4 h1:D3Fpn2nQSQOhl8ZlAxijZAf7K6F8CM1uZq0afIG
 github.com/siderolabs/protoenc v0.2.4/go.mod h1:i5XLHjfv5vyi7LhQrSEo19HCA+lYtDd7CWxsoWp9XE8=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.etcd.io/bbolt v1.5.0 h1:S7GAl7Fxv12yohbwFfIbQCGDWbQbtDGPET4P/bD4lxU=
 go.etcd.io/bbolt v1.5.0/go.mod h1:mkltfYE5aUHQxUct9N9V+Kp7aSjFqjgrhcXIS70Lrdk=
 go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
@@ -80,48 +75,18 @@ go.yaml.in/yaml/v3 v3.0.5 h1:N6y/pJk8buWs9NY5ERU2HSMfm+IuD/OtfdAnq6kESPw=
 go.yaml.in/yaml/v3 v3.0.5/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
 go.yaml.in/yaml/v4 v4.0.0-rc.6 h1:1h7H1ohdUh93/FyE4YaDa1Zh64K6VVbjF4K6WUxMtH4=
 go.yaml.in/yaml/v4 v4.0.0-rc.6/go.mod h1:aZqd9kCMsGL7AuUv/m/PvWLdg5sjJsZ4oHDEnfPPfY0=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.54.0 h1:YLIA59K4fiNzHzjnZt2tUJQjQtUWfWbeHBqKtk3eScw=
 golang.org/x/crypto v0.54.0/go.mod h1:KWL8ny2AZdGR2cWmzeHrp2azQPGogOv+HeQaVEXC2dk=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-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/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.57.0 h1:K5+3DljvIuDG9/Jv9rvyMywYNFCQ9RSUY6OOTTkT+tE=
 golang.org/x/net v0.57.0/go.mod h1:KpXc8iv+r3XplLAG/f7Jsf9RPszJzdR0f58q9vGOuEU=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek=
 golang.org/x/sync v0.22.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
 golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.40.0 h1:Ub2Z6/xjgF1WrYQz2nuITOEegKFtiIy+rieRJ5lHZKs=
 golang.org/x/text v0.40.0/go.mod h1:hpnzDAfGV753zIKo+wk3u1bVKCGPbrnF7+7LBF/UHVY=
 golang.org/x/time v0.15.0 h1:bbrp8t3bGUeFOx08pvsMYRTCVSMk89u4tKbNOZbp88U=
 golang.org/x/time v0.15.0/go.mod h1:Y4YMaQmXwGQZoFaVFk4YpCt4FLQMYKZe9oeV/f4MSno=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gonum.org/v1/gonum v0.17.0 h1:VbpOemQlsSMrYmn7T2OUvQ4dqxQXU+ouZFQsZOx50z4=
 gonum.org/v1/gonum v0.17.0/go.mod h1:El3tOrEuMpv2UdMrbNlKEh9vd86bmQ6vqIcDwxEOc1E=
 google.golang.org/genproto/googleapis/api v0.0.0-20260803160001-6ac0973c030d h1:FarXi840EJWSHYTN3ERkADbPWjl307+FGrA22KAVjjc=

pkg/keystorage/keystorage.go

@@ -15,13 +15,20 @@ import (
 	"sort"
 	"sync"
 
-	"github.com/ProtonMail/gopenpgp/v2/helper"
+	"github.com/ProtonMail/gopenpgp/v3/crypto"
 	"github.com/siderolabs/gen/maps"
 	"github.com/siderolabs/gen/xerrors"
 
 	"github.com/cosi-project/runtime/api/key_storage"
 )
 
+// pgp returns the OpenPGP handle used to encrypt and decrypt the key slots,
+// initializing it on the first use.
+//
+// The default profile is used, as it produces messages compatible with the ones
+// previously written by gopenpgp/v2.
+var pgp = sync.OnceValue(crypto.PGP)
+
 // KeyStorage is a key storage that can be used to store and retrieve the master key.
 //
 //nolint:govet
@@ -61,7 +68,7 @@ func (ks *KeyStorage) Initialize(masterKey []byte, slotID, slotPublicKey string)
 		return xerrors.NewTaggedf[AlreadyInitializedTag]("key storage is already initialized")
 	}
 
-	encryptedSlot, err := helper.EncryptBinaryMessageArmored(slotPublicKey, masterKey)
+	encryptedSlot, err := encryptSlot(slotPublicKey, masterKey)
 	if err != nil {
 		return xerrors.NewTaggedf[KeyEncryptionFailureTag]("failed to encrypt slot '%s': %w", slotID, err)
 	}
@@ -70,7 +77,7 @@ func (ks *KeyStorage) Initialize(masterKey []byte, slotID, slotPublicKey string)
 	ks.underlying.KeySlots = map[string]*key_storage.KeySlot{
 		slotID: {
 			Algorithm:    key_storage.Algorithm_PGP_AES_GCM_256,
-			EncryptedKey: []byte(encryptedSlot),
+			EncryptedKey: encryptedSlot,
 		},
 	}
 	ks.underlying.KeysHmacHash = ks.hashSlots(masterKey)
@@ -101,14 +108,14 @@ func (ks *KeyStorage) AddKeySlot(newSlotID, newSlotPublicKey, oldSlotID, oldSlot
 		return err
 	}
 
-	encryptedSlot, err := helper.EncryptBinaryMessageArmored(newSlotPublicKey, masterKey)
+	encryptedSlot, err := encryptSlot(newSlotPublicKey, masterKey)
 	if err != nil {
 		return xerrors.NewTaggedf[KeyEncryptionFailureTag]("failed to encrypt slot '%s': %w", newSlotID, err)
 	}
 
 	ks.underlying.GetKeySlots()[newSlotID] = &key_storage.KeySlot{
 		Algorithm:    key_storage.Algorithm_PGP_AES_GCM_256,
-		EncryptedKey: []byte(encryptedSlot),
+		EncryptedKey: encryptedSlot,
 	}
 
 	ks.underlying.KeysHmacHash = ks.hashSlots(masterKey)
@@ -170,7 +177,7 @@ func (ks *KeyStorage) getKey(slotID string, slotPrivateKey string) ([]byte, erro
 		return nil, xerrors.NewTaggedf[AlgorithmMismatchTag]("slot '%s' algorithm mismatch", slotID)
 	}
 
-	masterKey, err := helper.DecryptBinaryMessageArmored(slotPrivateKey, nil, string(slot.EncryptedKey))
+	masterKey, err := decryptSlot(slotPrivateKey, slot.EncryptedKey)
 	if err != nil {
 		return nil, xerrors.NewTaggedf[KeyDecryptionFailureTag]("failed to decrypt slot '%s': %w", slotID, err)
 	}
@@ -233,6 +240,63 @@ func (ks *KeyStorage) hashSlots(masterKey []byte) []byte {
 	return hash.Sum(nil)
 }
 
+// encryptSlot encrypts the master key with the given armored key, and returns the armored ciphertext.
+//
+// The key might be either a public or a private key, in the latter case the public part is used.
+func encryptSlot(slotPublicKey string, masterKey []byte) ([]byte, error) {
+	key, err := crypto.NewKeyFromArmored(slotPublicKey)
+	if err != nil {
+		return nil, fmt.Errorf("unable to load armored key: %w", err)
+	}
+
+	defer key.ClearPrivateParams()
+
+	if key.IsPrivate() {
+		if key, err = key.ToPublic(); err != nil {
+			return nil, fmt.Errorf("unable to extract public key from private key: %w", err)
+		}
+	}
+
+	encryption, err := pgp().Encryption().Recipient(key).New()
+	if err != nil {
+		return nil, fmt.Errorf("unable to create encryption handle: %w", err)
+	}
+
+	message, err := encryption.Encrypt(masterKey)
+	if err != nil {
+		return nil, fmt.Errorf("unable to encrypt message: %w", err)
+	}
+
+	armored, err := message.ArmorBytes()
+	if err != nil {
+		return nil, fmt.Errorf("unable to armor the ciphertext: %w", err)
+	}
+
+	return armored, nil
+}
+
+// decryptSlot decrypts the master key from the armored ciphertext with the given armored private key.
+func decryptSlot(slotPrivateKey string, ciphertext []byte) ([]byte, error) {
+	key, err := crypto.NewPrivateKeyFromArmored(slotPrivateKey, nil)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse the private key: %w", err)
+	}
+
+	defer key.ClearPrivateParams()
+
+	decryption, err := pgp().Decryption().DecryptionKey(key).New()
+	if err != nil {
+		return nil, fmt.Errorf("unable to create decryption handle: %w", err)
+	}
+
+	result, err := decryption.Decrypt(ciphertext, crypto.Armor)
+	if err != nil {
+		return nil, fmt.Errorf("unable to decrypt message: %w", err)
+	}
+
+	return result.Bytes(), nil
+}
+
 func isZero(underlying *key_storage.Storage) bool {
 	return underlying.GetStorageVersion() == key_storage.StorageVersion_STORAGE_VERSION_UNSPECIFIED &&
 		len(underlying.GetKeySlots()) == 0 &&

pkg/keystorage/keystorage_test.go

@@ -21,8 +21,13 @@ var (
 	//go:embed testdata/private.key
 	privateKey string
 
-	//go:embed testdata/private.key
+	//go:embed testdata/public.key
 	publicKey string
+
+	// keyStorageV2 is a key storage marshaled by a version of this package built on top of gopenpgp/v2,
+	// it is used to verify that the key slots stay readable after the migration to gopenpgp/v3.
+	//go:embed testdata/keystorage-v2.bin
+	keyStorageV2 []byte
 )
 
 const (
@@ -131,6 +136,19 @@ func TestMarshalUnmarshal(t *testing.T) {
 	require.Equal(t, ksKey, key)
 }
 
+func TestUnmarshalGopenPGPV2(t *testing.T) {
+	t.Parallel()
+
+	var ks keystorage.KeyStorage
+
+	require.NoError(t, ks.UnmarshalBinary(keyStorageV2))
+
+	key, err := ks.GetMasterKey(slotID, privateKey)
+	require.NoError(t, err)
+
+	require.Equal(t, []byte(masterKey), key)
+}
+
 func TestKeyStorage_DeleteMasterKeySlot(t *testing.T) {
 	type args struct {
 		slotID         string
@@ -270,7 +288,7 @@ func TestKeyStorage_Set(t *testing.T) {
 				slotPublicKey: publicKey[:32],
 				newSlotID:     "new-slot-id",
 			},
-			testErr: check.ErrorTagIs[keystorage.KeyDecryptionFailureTag](),
+			testErr: check.ErrorTagIs[keystorage.KeyEncryptionFailureTag](),
 		},
 		"proper key": {
 			args: args{
@@ -290,7 +308,7 @@ func TestKeyStorage_Set(t *testing.T) {
 
 			require.NoError(t, ks.Initialize([]byte(masterKey), slotID, publicKey))
 
-			tt.testErr(t, ks.AddKeySlot(tt.args.newSlotID, tt.args.slotPublicKey, tt.args.slotID, tt.args.slotPublicKey))
+			tt.testErr(t, ks.AddKeySlot(tt.args.newSlotID, tt.args.slotPublicKey, tt.args.slotID, privateKey))
 		})
 	}
 }

pkg/keystorage/testdata/keystorage-v2.bin

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