diff options
Diffstat (limited to 'pkg/crypto')
| -rw-r--r-- | pkg/crypto/crypto_stdlib.go | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/pkg/crypto/crypto_stdlib.go b/pkg/crypto/crypto_stdlib.go index 69e867386..28eba2ff6 100644 --- a/pkg/crypto/crypto_stdlib.go +++ b/pkg/crypto/crypto_stdlib.go @@ -19,14 +19,21 @@ package crypto import ( "crypto/ecdsa" + "crypto/elliptic" "crypto/sha512" + "fmt" "math/big" ) -// EcdsaVerify verifies the signature in r, s of hash using ECDSA and the -// public key, pub. Its return value records whether the signature is valid. -func EcdsaVerify(pub *ecdsa.PublicKey, hash []byte, r, s *big.Int) (bool, error) { - return ecdsa.Verify(pub, hash, r, s), nil +// EcdsaP384Sha384Verify verifies the signature in r, s of hash using ECDSA +// P384 + SHA 384 and the public key, pub. Its return value records whether +// the signature is valid. +func EcdsaP384Sha384Verify(pub *ecdsa.PublicKey, data []byte, r, s *big.Int) (bool, error) { + if pub.Curve != elliptic.P384() { + return false, fmt.Errorf("unsupported key curve: want P-384, got %v", pub.Curve) + } + digest := sha512.Sum384(data) + return ecdsa.Verify(pub, digest[:], r, s), nil } // SumSha384 returns the SHA384 checksum of the data. |