crypto

func CreateAddress ¶

func CreateAddress(b common.Address, nonce uint64) common.Address

Creates an ethereum address given the bytes and the nonce

func Ecrecover ¶

func Ecrecover(hash, sig []byte) ([]byte, error)

func FromECDSA ¶

func FromECDSA(prv *ecdsa.PrivateKey) []byte

func FromECDSAPub ¶

func FromECDSAPub(pub *ecdsa.PublicKey) []byte

func GenerateKey ¶

func GenerateKey() (*ecdsa.PrivateKey, error)

func HexToECDSA ¶

func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error)

HexToECDSA parses a secp256k1 private key.

func Keccak256 ¶

func Keccak256(data ...[]byte) []byte

func Keccak256Hash ¶

func Keccak256Hash(data ...[]byte) (h common.Hash)

func LoadECDSA ¶

func LoadECDSA(file string) (*ecdsa.PrivateKey, error)

LoadECDSA loads a secp256k1 private key from the given file. The key data is expected to be hex-encoded.

func PubkeyToAddress ¶

func PubkeyToAddress(p ecdsa.PublicKey) common.Address

func S256 ¶

func S256() elliptic.Curve

S256 returns an instance of the secp256k1 curve.

func SaveECDSA ¶

func SaveECDSA(file string, key *ecdsa.PrivateKey) error

SaveECDSA saves a secp256k1 private key to the given file with restrictive permissions. The key data is saved hex-encoded.

func SigToPub ¶

func SigToPub(hash, sig []byte) (*ecdsa.PublicKey, error)

func Sign ¶

func Sign(hash []byte, prv *ecdsa.PrivateKey) (sig []byte, err error)

Sign calculates an ECDSA signature.

This function is susceptible to chosen plaintext attacks that can leak information about the private key that is used for signing. Callers must be aware that the given hash cannot be chosen by an adversery. Common solution is to hash any input before calculating the signature.

The produced signature is in the [R || S || V] format where V is 0 or 1.

func ToECDSA ¶

func ToECDSA(prv []byte) *ecdsa.PrivateKey

ToECDSA creates a private key with the given D value.

func ToECDSAPub ¶

func ToECDSAPub(pub []byte) *ecdsa.PublicKey

func ValidateSignatureValues ¶

func ValidateSignatureValues(v byte, r, s *big.Int, homestead bool) bool

ValidateSignatureValues verifies whether the signature values are valid with the given chain rules. The v value is assumed to be either 0 or 1.