Documentation
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Index ¶
- Constants
- func CompressPubkey(pubkey *ecdsa.PublicKey) []byte
- func CreateAddress(b common.Address, nonce uint64) common.Address
- func CreateAddress2(b common.Address, salt [32]byte, inithash []byte) common.Address
- func DecompressPubkey(pubkey []byte) (*ecdsa.PublicKey, error)
- func Ecrecover(hash, sig []byte) ([]byte, error)
- func FromECDSA(priv *ecdsa.PrivateKey) []byte
- func FromECDSAPub(pub *ecdsa.PublicKey) []byte
- func GenerateKey() (*ecdsa.PrivateKey, error)
- func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error)
- func Keccak256(data ...[]byte) []byte
- func Keccak256Hash(data ...[]byte) (h common.Hash)
- func Keccak512(data ...[]byte) []byte
- func LoadECDSA(file string) (*ecdsa.PrivateKey, error)
- func PubkeyToAddress(p ecdsa.PublicKey) common.Address
- func S256() elliptic.Curve
- func SaveECDSA(file string, key *ecdsa.PrivateKey) error
- func SigToPub(hash, sig []byte) (*ecdsa.PublicKey, error)
- func Sign(digestHash []byte, prv *ecdsa.PrivateKey) (sig []byte, err error)
- func ToECDSA(d []byte) (*ecdsa.PrivateKey, error)
- func ToECDSAUnsafe(d []byte) *ecdsa.PrivateKey
- func UnmarshalPubkey(pub []byte) (*ecdsa.PublicKey, error)
- func ValidateSignatureValues(v byte, r, s *big.Int, homestead bool) bool
- func VerifySignature(pubkey, digestHash, signature []byte) bool
Constants ¶
const DigestLength = 32
DigestLength sets the signature digest exact length
const RecoveryIDOffset = 64
RecoveryIDOffset points to the byte offset within the signature that contains the recovery id.
const SignatureLength = 64 + 1 // 64 bytes ECDSA signature + 1 byte recovery id
SignatureLength indicates the byte length required to carry a signature with recovery id.
Variables ¶
This section is empty.
Functions ¶
func CompressPubkey ¶ added in v1.8.0
CompressPubkey encodes a public key to the 33-byte compressed format.
func CreateAddress ¶
CreateAddress creates an ethereum address given the bytes and the nonce
func CreateAddress2 ¶ added in v1.8.13
CreateAddress2 creates an ethereum address given the address bytes, initial contract code hash and a salt.
func DecompressPubkey ¶ added in v1.8.0
DecompressPubkey parses a public key in the 33-byte compressed format.
func FromECDSA ¶
func FromECDSA(priv *ecdsa.PrivateKey) []byte
FromECDSA exports a private key into a binary dump.
func FromECDSAPub ¶
func GenerateKey ¶
func GenerateKey() (*ecdsa.PrivateKey, error)
GenerateKey generates a new private key.
func HexToECDSA ¶ added in v0.8.4
func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error)
HexToECDSA parses a secp256k1 private key.
func Keccak256 ¶ added in v1.4.0
Keccak256 calculates and returns the Keccak256 hash of the input data.
func Keccak256Hash ¶ added in v1.4.0
Keccak256Hash calculates and returns the Keccak256 hash of the input data, converting it to an internal Hash data structure.
func Keccak512 ¶ added in v1.6.0
Keccak512 calculates and returns the Keccak512 hash of the input data.
func LoadECDSA ¶ added in v0.8.4
func LoadECDSA(file string) (*ecdsa.PrivateKey, error)
LoadECDSA loads a secp256k1 private key from the given file.
func SaveECDSA ¶ added in v0.9.17
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 Sign ¶
func Sign(digestHash []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 digest 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(d []byte) (*ecdsa.PrivateKey, error)
ToECDSA creates a private key with the given D value.
func ToECDSAUnsafe ¶ added in v1.6.3
func ToECDSAUnsafe(d []byte) *ecdsa.PrivateKey
ToECDSAUnsafe blindly converts a binary blob to a private key. It should almost never be used unless you are sure the input is valid and want to avoid hitting errors due to bad origin encoding (0 prefixes cut off).
func UnmarshalPubkey ¶ added in v1.8.11
UnmarshalPubkey converts bytes to a secp256k1 public key.
func ValidateSignatureValues ¶ added in v0.9.28
ValidateSignatureValues verifies whether the signature values are valid with the given chain rules. The v value is assumed to be either 0 or 1.
func VerifySignature ¶ added in v1.8.0
VerifySignature checks that the given public key created signature over digest. The public key should be in compressed (33 bytes) or uncompressed (65 bytes) format. The signature should have the 64 byte [R || S] format.
Types ¶
This section is empty.
Directories
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Path | Synopsis |
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Package blake2b implements the BLAKE2b hash algorithm defined by RFC 7693 and the extendable output function (XOF) BLAKE2Xb.
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Package blake2b implements the BLAKE2b hash algorithm defined by RFC 7693 and the extendable output function (XOF) BLAKE2Xb. |
Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve.
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Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve. |
cloudflare
Package bn256 implements a particular bilinear group at the 128-bit security level.
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Package bn256 implements a particular bilinear group at the 128-bit security level. |
google
Package bn256 implements a particular bilinear group.
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Package bn256 implements a particular bilinear group. |
Package secp256k1 wraps the bitcoin secp256k1 C library.
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Package secp256k1 wraps the bitcoin secp256k1 C library. |