diff options
Diffstat (limited to 'crypto/crypto.go')
| -rw-r--r-- | crypto/crypto.go | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/crypto/crypto.go b/crypto/crypto.go index b3a8d730b..672fb069a 100644 --- a/crypto/crypto.go +++ b/crypto/crypto.go @@ -198,7 +198,9 @@ func Sign(hash []byte, prv *ecdsa.PrivateKey) (sig []byte, err error) { return nil, fmt.Errorf("hash is required to be exactly 32 bytes (%d)", len(hash)) } - sig, err = secp256k1.Sign(hash, common.LeftPadBytes(prv.D.Bytes(), prv.Params().BitSize/8)) + seckey := common.LeftPadBytes(prv.D.Bytes(), prv.Params().BitSize/8) + defer zeroBytes(seckey) + sig, err = secp256k1.Sign(hash, seckey) return } @@ -337,3 +339,9 @@ func PubkeyToAddress(p ecdsa.PublicKey) common.Address { pubBytes := FromECDSAPub(&p) return common.BytesToAddress(Sha3(pubBytes[1:])[12:]) } + +func zeroBytes(bytes []byte) { + for i := range bytes { + bytes[i] = 0 + } +} |