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crypto: fix TestToECDSAErrors for nocgo

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This commit is contained in:
Alex Wu 2017-12-24 16:18:51 +08:00
parent 9d187f0238
commit 5d5404e75d
1 changed files with 11 additions and 0 deletions
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11
crypto/crypto.go
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@ -97,6 +97,17 @@ func toECDSA(d []byte, strict bool) (*ecdsa.PrivateKey, error) {
return nil, fmt.Errorf("invalid length, need %d bits", priv.Params().BitSize)
}
priv.D = new(big.Int).SetBytes(d)
// The priv.D must < N
if priv.D.Cmp(secp256k1_N) >= 0 {
return nil, fmt.Errorf("invalid private key, >=N")
}
// The priv.D must not be zero or negative.
zero := new(big.Int).SetInt64(0)
if priv.D.Cmp(zero) <= 0 {
return nil, fmt.Errorf("invalid private key, zero or negative")
}
priv.PublicKey.X, priv.PublicKey.Y = priv.PublicKey.Curve.ScalarBaseMult(d)
if priv.PublicKey.X == nil {
return nil, errors.New("invalid private key")