From b45441f0edc8bdf7407f15f809ee18eb127b743f Mon Sep 17 00:00:00 2001 From: Emman Date: Wed, 15 Dec 2021 10:33:57 +0800 Subject: [PATCH] reduce parameter --- sm2/sm2.go | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sm2/sm2.go b/sm2/sm2.go index 4f7911e..891e5b9 100644 --- a/sm2/sm2.go +++ b/sm2/sm2.go @@ -606,12 +606,12 @@ func Sign(rand io.Reader, priv *ecdsa.PrivateKey, hash []byte) (r, s *big.Int, e S: cipher.NewCTR(block, []byte(aesIV)), } - // See [NSA] 3.4.1 - c := priv.PublicKey.Curve - return signGeneric(priv, &csprng, c, hash) + return signGeneric(priv, &csprng, hash) } -func signGeneric(priv *ecdsa.PrivateKey, csprng *cipher.StreamReader, c elliptic.Curve, hash []byte) (r, s *big.Int, err error) { +func signGeneric(priv *ecdsa.PrivateKey, csprng *cipher.StreamReader, hash []byte) (r, s *big.Int, err error) { + // See [NSA] 3.4.1 + c := priv.PublicKey.Curve N := c.Params().N if N.Sign() == 0 { return nil, nil, errZeroParam