secp256k1

package

v1.1.19 Latest Latest Go to latest Published: Dec 17, 2024 License: Apache-2.0 Imports: 9 Imported by: 1

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func PublicKeyToAddress(pubKey *btcec.PublicKey) *ethtypes.Address0xHex

type KeyPair struct {
	PrivateKey *btcec.PrivateKey
	PublicKey  *btcec.PublicKey
	Address    ethtypes.Address0xHex
}

func GenerateSecp256k1KeyPair() (*KeyPair, error)

func KeyPairFromBytes(b []byte) *KeyPair

func NewSecp256k1KeyPair(b []byte) (*KeyPair, error)

Deprecated: Note there is no error condition returned by this function (use KeyPairFromBytes)

func (k *KeyPair) PrivateKeyBytes() []byte

func (k *KeyPair) PublicKeyBytes() []byte

func (k *KeyPair) Sign(message []byte) (ethSig *SignatureData, err error)

Sign hashes the input then signs it

func (k *KeyPair) SignDirect(message []byte) (ethSig *SignatureData, err error)

SignDirect performs raw signing - give legacy 27/28 V values

type SignatureData struct {
	V *big.Int
	R *big.Int
	S *big.Int
}

func DecodeCompactRSV(ctx context.Context, compactRSV []byte) (*SignatureData, error)

func (s *SignatureData) CompactRSV() []byte

We use the ethereum convention of R,S,V for compact packing (mentioned because Golang tends to prefer V,R,S)

func (s *SignatureData) Recover(message []byte, chainID int64) (a *ethtypes.Address0xHex, err error)

Recover obtains the original signer from the hash of the message

func (s *SignatureData) RecoverDirect(message []byte, chainID int64) (a *ethtypes.Address0xHex, err error)

Recover obtains the original signer

func (s *SignatureData) UpdateEIP155(chainID int64)

EIP-155 rules - 2xChainID + 35 - starting point must be legacy 27/28

func (s *SignatureData) UpdateEIP2930()

EIP-2930 (/ EIP-1559) rules - 0 or 1 V value for raw Y-parity value (chainID goes into the payload)

type Signer interface {
	Sign(msgToHashAndSign []byte) (*SignatureData, error)
}

Signer is the low level common interface that can be implemented by any module which provides signature capability

type SignerDirect interface {
	Signer
	SignDirect(message []byte) (*SignatureData, error)
}