Documentation
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Index ¶
- Constants
- func CompressPubkey(pubkey *ecdsa.PublicKey) []byte
- func DecompressPubkey(pubkey []byte) (*ecdsa.PublicKey, error)
- func Ecrecover(hash, sig []byte) ([]byte, error)
- func FromECDSAPub(pub *ecdsa.PublicKey) []byte
- func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error)
- func Keccak256(data ...[]byte) []byte
- func LoadECDSA(file string) (*ecdsa.PrivateKey, error)
- func S256() elliptic.Curve
- func SigToPub(hash, sig []byte) (*ecdsa.PublicKey, error)
- func Sign(hash []byte, prv *ecdsa.PrivateKey) ([]byte, error)
- func ToECDSA(d []byte) (*ecdsa.PrivateKey, error)
- func ToECDSAUnsafe(d []byte) *ecdsa.PrivateKey
- func UnmarshalPubkey(pub []byte) (*ecdsa.PublicKey, error)
- func VerifySignature(pubkey, hash, signature []byte) bool
- type Address
Constants ¶
const AddressLength = 20
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 ¶
CompressPubkey encodes a public key to the 33-byte compressed format.
func DecompressPubkey ¶
DecompressPubkey parses a public key in the 33-byte compressed format.
func FromECDSAPub ¶
func HexToECDSA ¶
func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error)
HexToECDSA parses a secp256k1 private key.
func LoadECDSA ¶
func LoadECDSA(file string) (*ecdsa.PrivateKey, error)
LoadECDSA loads a secp256k1 private key from the given file.
func Sign ¶
func Sign(hash []byte, prv *ecdsa.PrivateKey) ([]byte, 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(d []byte) (*ecdsa.PrivateKey, error)
ToECDSA creates a private key with the given D value.
func ToECDSAUnsafe ¶
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 ¶
UnmarshalPubkey converts bytes to a secp256k1 public key.
func VerifySignature ¶
VerifySignature checks that the given public key created signature over hash. 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 ¶
type Address ¶
type Address [AddressLength]byte
Address represents the 20 byte address of an Ethereum account.
func BytesToAddress ¶
BytesToAddress returns Address with value b. If b is larger than len(h), b will be cropped from the left.
func PubkeyToAddress ¶
Source Files
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. |
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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. |
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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. |
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google
Package bn256 implements a particular bilinear group.
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Package bn256 implements a particular bilinear group. |
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Package secp256k1 wraps the bitcoin secp256k1 C library.
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Package secp256k1 wraps the bitcoin secp256k1 C library. |