diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/openpgp/packet/public_key.go')
| -rw-r--r-- | vendor/golang.org/x/crypto/openpgp/packet/public_key.go | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/vendor/golang.org/x/crypto/openpgp/packet/public_key.go b/vendor/golang.org/x/crypto/openpgp/packet/public_key.go index ead2623..fcd5f52 100644 --- a/vendor/golang.org/x/crypto/openpgp/packet/public_key.go +++ b/vendor/golang.org/x/crypto/openpgp/packet/public_key.go @@ -244,7 +244,12 @@ func NewECDSAPublicKey(creationTime time.Time, pub *ecdsa.PublicKey) *PublicKey } pk.ec.p.bytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y) - pk.ec.p.bitLength = uint16(8 * len(pk.ec.p.bytes)) + + // The bit length is 3 (for the 0x04 specifying an uncompressed key) + // plus two field elements (for x and y), which are rounded up to the + // nearest byte. See https://tools.ietf.org/html/rfc6637#section-6 + fieldBytes := (pub.Curve.Params().BitSize + 7) & ^7 + pk.ec.p.bitLength = uint16(3 + fieldBytes + fieldBytes) pk.setFingerPrintAndKeyId() return pk @@ -515,7 +520,7 @@ func (pk *PublicKey) VerifySignature(signed hash.Hash, sig *Signature) (err erro switch pk.PubKeyAlgo { case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: rsaPublicKey, _ := pk.PublicKey.(*rsa.PublicKey) - err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, sig.RSASignature.bytes) + err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, padToKeySize(rsaPublicKey, sig.RSASignature.bytes)) if err != nil { return errors.SignatureError("RSA verification failure") } @@ -566,7 +571,7 @@ func (pk *PublicKey) VerifySignatureV3(signed hash.Hash, sig *SignatureV3) (err switch pk.PubKeyAlgo { case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: rsaPublicKey := pk.PublicKey.(*rsa.PublicKey) - if err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, sig.RSASignature.bytes); err != nil { + if err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, padToKeySize(rsaPublicKey, sig.RSASignature.bytes)); err != nil { return errors.SignatureError("RSA verification failure") } return |