utils

package

v1.5.6 Latest Latest Go to latest Published: Oct 3, 2021 License: Apache-2.0 Imports: 6 Imported by: 0

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func GetCurveHalfOrdersAt(c elliptic.Curve) *big.Int

func IsLowS(k *ecdsa.PublicKey, s *big.Int) (bool, error)

IsLow checks that s is a low-S

func MarshalECDSASignature(r, s *big.Int) ([]byte, error)

func SignatureToLowS(k *ecdsa.PublicKey, signature []byte) ([]byte, error)

func ToLowS(k *ecdsa.PublicKey, s *big.Int) (*big.Int, error)

func UnmarshalECDSASignature(raw []byte) (*big.Int, *big.Int, error)

type ECDSASignature struct {
	R, S *big.Int
}