crypto

package
v0.0.0-...-ce7d804 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Sep 21, 2020 License: LGPL-3.0 Imports: 24 Imported by: 1

Documentation

Overview

Ripemd160 

sum := crypto.Ripemd160([]byte("This is blockchain"))
fmt.Printf("%x\n", sum)

Index

Constants

View Source 
const (
	CryptoTypeGM        = "gm"
	CryptoTypeEd25519   = "ed25519"
	CryptoTypeSecp256K1 = "secp256k1"
)
View Source 
const PubKeyEd25519Size = 32
View Source 
const SM2Magic = 0x8
View Source 
const SignatureEd25519Size = 64
View Source 
const SignatureGMSize = 65
View Source 
const Version = "0.9.0-dev"

Variables

View Source 
var (
	// ErrInvalidCryptoType --
	ErrInvalidCryptoType = errors.New("Invalid Crypto Type")
)

Functions

func CRandBytes 

func CRandBytes(numBytes int) []byte

This uses the OS and the Seed(s).

func CRandHex 

func CRandHex(numDigits int) string

CRandHex returns a hex encoded string that's floor(numDigits/2) * 2 long.

Note: CRandHex(24) gives 96 bits of randomness that are usually strong enough for most purposes.

func CReader 

func CReader() io.Reader

Returns a crand.Reader mixed with user-supplied entropy

func CheckPriKey 

func CheckPriKey(pubKey, priKey string) (bool, error)

func CreateAddress 

func CreateAddress(b common.Address, nonce uint64, payload []byte) common.Address

CreateAddress creates an ethereum address given the bytes and the nonce

func CreateAddress2 

func CreateAddress2(b common.Address, salt [32]byte, inithash []byte) common.Address

CreateAddress2 creates an ethereum address given the address bytes, initial contract code hash and a salt.

func CreateContractAddress 

func CreateContractAddress(b common.Address, nonce uint64, payload []byte, rand int) common.Address

CreateContractAddress creates an ethereum address given the bytes and the nonce and the random number

func Ecrecover 

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

Ecrecover returns the uncompressed public key that created the given signature.

func Keccak256 

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

Keccak256 calculates and returns the Keccak256 hash of the input data.

func Keccak256Hash 

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

Keccak256Hash calculates and returns the Keccak256 hash of the input data, converting it to an internal Hash data structure.

func Keccak512 

func Keccak512(data ...[]byte) []byte

Keccak512 calculates and returns the Keccak512 hash of the input data.

func LocalAccountType 

func LocalAccountType() string

LocalAccountType --

func LocalNodeType 

func LocalNodeType() string

func MixEntropy 

func MixEntropy(seedBytes []byte)

Mix additional bytes of randomness, e.g. from hardware, user-input, etc. It is OK to call it multiple times. It does not diminish security.

func ParseSignatureGM 

func ParseSignatureGM(sig []byte) (r, s, v *big.Int, ok bool)

ParseSignatureGM --

func PubkeyToAddress 

func PubkeyToAddress(pubKey PubKey) common.Address

PubkeyToAddress --

func RegisterAmino 

func RegisterAmino()

RegisterAmino registers all crypto related types in the given (amino) codec.

func Ripemd160 

func Ripemd160(bytes []byte) []byte

func S256 

func S256() elliptic.Curve

S256 returns an instance of the secp256k1 curve.

func Sender 

func Sender(hash, sig []byte) (common.Address, error)

Sender : Ecrecover sender's Address

func SetLocalAccountType 

func SetLocalAccountType(t string)

SetLocalAccountType --

func SetLocalNodeType 

func SetLocalNodeType(t string)

SetLocalNodeType --

func Sha256 

func Sha256(bytes []byte) []byte

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.

func VerifySignature 

func VerifySignature(pubkey, hash, signature []byte) bool

VerifySignature checks that the given pubkey created signature over message. The signature should be in [R || S || V] format.

Types

type Address 

type Address = cmn.HexBytes

An address is a []byte, but hex-encoded even in JSON. []byte leaves us the option to change the address length. Use an alias so Unmarshal methods (with ptr receivers) are available too.

type PrivKey 

type PrivKey interface {
	Bytes() []byte
	Sign(msg []byte) (Signature, error)
	PubKey() PubKey
	Equals(PrivKey) bool
	Reset()
	Raw() []byte
	Type() string
}

func GenerateAccountKey 

func GenerateAccountKey() (PrivKey, error)

GenerateAccountKey --

func GenerateNodeKey 

func GenerateNodeKey() (PrivKey, error)

GenerateNodeKey --

func GeneratePrivKeyFromSecret 

func GeneratePrivKeyFromSecret(secret []byte, t string) (PrivKey, error)

GeneratePrivKeyFromSecret --

func HexToPrivkey 

func HexToPrivkey(priv string) (PrivKey, error)

func PrivKeyFromBytes 

func PrivKeyFromBytes(privKeyBytes []byte) (privKey PrivKey, err error)

type PrivKeyEd25519 

type PrivKeyEd25519 [64]byte

Implements PrivKey

func GenPrivKeyEd25519 

func GenPrivKeyEd25519() (PrivKeyEd25519, error)

func GenPrivKeyEd25519FromSecret 

func GenPrivKeyEd25519FromSecret(secret []byte) (PrivKeyEd25519, error)

NOTE: secret should be the output of a KDF like bcrypt, if it's derived from user input.

func (PrivKeyEd25519) Bytes 

func (privKey PrivKeyEd25519) Bytes() []byte

func (PrivKeyEd25519) Equals 

func (privKey PrivKeyEd25519) Equals(other PrivKey) bool

Equals - you probably don't need to use this. Runs in constant time based on length of the keys.

func (PrivKeyEd25519) Generate 

func (privKey PrivKeyEd25519) Generate(index int) PrivKeyEd25519

Deterministically generates new priv-key bytes from key.

func (PrivKeyEd25519) MarshalJSON 

func (privKey PrivKeyEd25519) MarshalJSON() ([]byte, error)

func (PrivKeyEd25519) PubKey 

func (privKey PrivKeyEd25519) PubKey() PubKey

func (PrivKeyEd25519) Raw 

func (privKey PrivKeyEd25519) Raw() []byte

Raw --

func (PrivKeyEd25519) Reset 

func (privKey PrivKeyEd25519) Reset()

Reset --

func (PrivKeyEd25519) Sign 

func (privKey PrivKeyEd25519) Sign(msg []byte) (Signature, error)

func (PrivKeyEd25519) Type 

func (privKey PrivKeyEd25519) Type() string

func (*PrivKeyEd25519) UnmarshalJSON 

func (privKey *PrivKeyEd25519) UnmarshalJSON(input []byte) error

type PrivKeyGM 

type PrivKeyGM struct {
	Db []byte
	// contains filtered or unexported fields
}

PrivKeyGM --

func GenPrivKeyGM 

func GenPrivKeyGM() (*PrivKeyGM, error)

GenPrivKeyGM --

func GenPrivKeyGMFromSecret 

func GenPrivKeyGMFromSecret(secret []byte) (*PrivKeyGM, error)

GenPrivKeyGMFromSecret --

func (*PrivKeyGM) Bytes 

func (privKey *PrivKeyGM) Bytes() []byte

Bytes --

func (*PrivKeyGM) Equals 

func (privKey *PrivKeyGM) Equals(other PrivKey) bool

Equals --

func (*PrivKeyGM) PubKey 

func (privKey *PrivKeyGM) PubKey() PubKey

PubKey --

func (*PrivKeyGM) Raw 

func (privKey *PrivKeyGM) Raw() []byte

Raw --

func (*PrivKeyGM) Reset 

func (privKey *PrivKeyGM) Reset()

Reset --

func (*PrivKeyGM) Sign 

func (privKey *PrivKeyGM) Sign(msg []byte) (Signature, error)

Sign --

func (*PrivKeyGM) Type 

func (privKey *PrivKeyGM) Type() string

Type --

type PrivKeySecp256k1 

type PrivKeySecp256k1 struct {
	Data []byte
	// contains filtered or unexported fields
}

func GenPrivKeySecp256k1 

func GenPrivKeySecp256k1() (*PrivKeySecp256k1, error)

func GenPrivKeySecp256k1FromSecret 

func GenPrivKeySecp256k1FromSecret(secret []byte) (*PrivKeySecp256k1, error)

NOTE: secret should be the output of a KDF like bcrypt, if it's derived from user input.

func (*PrivKeySecp256k1) Bytes 

func (privKey *PrivKeySecp256k1) Bytes() []byte

Bytes --

func (*PrivKeySecp256k1) Equals 

func (privKey *PrivKeySecp256k1) Equals(other PrivKey) bool

Equals - you probably don't need to use this. Runs in constant time based on length of the keys.

func (*PrivKeySecp256k1) PubKey 

func (privKey *PrivKeySecp256k1) PubKey() PubKey

PubKey --

func (*PrivKeySecp256k1) Raw 

func (privKey *PrivKeySecp256k1) Raw() []byte

Raw --

func (*PrivKeySecp256k1) Reset 

func (privKey *PrivKeySecp256k1) Reset()

Reset --

func (*PrivKeySecp256k1) Sign 

func (privKey *PrivKeySecp256k1) Sign(hash []byte) (Signature, 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 (*PrivKeySecp256k1) Type 

func (privKey *PrivKeySecp256k1) Type() string

Type --

type PubKey 

type PubKey interface {
	Address() Address
	Bytes() []byte
	VerifyBytes(msg []byte, sig Signature) bool
	Equals(PubKey) bool
	Raw() []byte
}

func HexToPubkey 

func HexToPubkey(pub string) (PubKey, error)

func PubKeyFromBytes 

func PubKeyFromBytes(pubKeyBytes []byte) (pubKey PubKey, err error)

type PubKeyEd25519 

type PubKeyEd25519 [PubKeyEd25519Size]byte

Implements PubKeyInner

func (PubKeyEd25519) Address 

func (pubKey PubKeyEd25519) Address() Address

Address is the Ripemd160 of the raw pubkey bytes.

func (PubKeyEd25519) Bytes 

func (pubKey PubKeyEd25519) Bytes() []byte

func (PubKeyEd25519) Equals 

func (pubKey PubKeyEd25519) Equals(other PubKey) bool

func (PubKeyEd25519) MarshalJSON 

func (pubKey PubKeyEd25519) MarshalJSON() ([]byte, error)

func (PubKeyEd25519) Raw 

func (pubKey PubKeyEd25519) Raw() []byte

Raw --

func (PubKeyEd25519) String 

func (pubKey PubKeyEd25519) String() string

func (*PubKeyEd25519) UnmarshalJSON 

func (pubKey *PubKeyEd25519) UnmarshalJSON(input []byte) error

func (PubKeyEd25519) VerifyBytes 

func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool

type PubKeyGM 

type PubKeyGM struct {
	Data []byte
	// contains filtered or unexported fields
}

PubKeyGM --

func PubKeyGMFromBytes 

func PubKeyGMFromBytes(data []byte) *PubKeyGM

PubKeyGMFromBytes --

func (*PubKeyGM) Address 

func (pubKey *PubKeyGM) Address() Address

Address --

func (*PubKeyGM) Bytes 

func (pubKey *PubKeyGM) Bytes() []byte

Bytes --

func (*PubKeyGM) Equals 

func (pubKey *PubKeyGM) Equals(other PubKey) bool

Equals --

func (*PubKeyGM) Raw 

func (pubKey *PubKeyGM) Raw() []byte

Raw --

func (*PubKeyGM) VerifyBytes 

func (pubKey *PubKeyGM) VerifyBytes(msg []byte, sig Signature) bool

VerifyBytes --

type PubKeySecp256k1 

type PubKeySecp256k1 struct {
	Data []byte
	// contains filtered or unexported fields
}

Implements PubKey. Compressed pubkey (just the x-cord), prefixed with 0x02 or 0x03, depending on the y-cord. type PubKeySecp256k1 [PubKeySecp256k1Size]byte

func PubKeySecp256k1FromBytes 

func PubKeySecp256k1FromBytes(raw []byte) *PubKeySecp256k1

PubKeySecp256k1FromBytes --

func (*PubKeySecp256k1) Address 

func (pubKey *PubKeySecp256k1) Address() Address

Address --

func (*PubKeySecp256k1) Bytes 

func (pubKey *PubKeySecp256k1) Bytes() []byte

Bytes --

func (*PubKeySecp256k1) Equals 

func (pubKey *PubKeySecp256k1) Equals(other PubKey) bool

Equals --

func (*PubKeySecp256k1) Raw 

func (pubKey *PubKeySecp256k1) Raw() []byte

Raw --

func (*PubKeySecp256k1) String 

func (pubKey *PubKeySecp256k1) String() string

func (*PubKeySecp256k1) VerifyBytes 

func (pubKey *PubKeySecp256k1) VerifyBytes(msg []byte, sig Signature) bool

VerifyBytes -- 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.

type Signature 

type Signature interface {
	Bytes() []byte
	IsZero() bool
	Equals(Signature) bool
	Raw() []byte
}

func NewSignatureEd25519 

func NewSignatureEd25519(data []byte) Signature

func NewSignatureGM 

func NewSignatureGM(data []byte) (Signature, bool)

NewSignatureGM --

func NewSignatureSecp256k1 

func NewSignatureSecp256k1(data []byte) Signature

func SignatureFromBytes 

func SignatureFromBytes(signBytes []byte) (sign Signature, err error)

type SignatureEd25519 

type SignatureEd25519 [SignatureEd25519Size]byte

Implements Signature

func (SignatureEd25519) Bytes 

func (sig SignatureEd25519) Bytes() []byte

func (SignatureEd25519) Equals 

func (sig SignatureEd25519) Equals(other Signature) bool

func (SignatureEd25519) IsZero 

func (sig SignatureEd25519) IsZero() bool

func (SignatureEd25519) Raw 

func (sig SignatureEd25519) Raw() []byte

Raw --

func (SignatureEd25519) String 

func (sig SignatureEd25519) String() string

type SignatureGM 

type SignatureGM [SignatureGMSize]byte

SignatureGM --

func (SignatureGM) Bytes 

func (sig SignatureGM) Bytes() []byte

Bytes --

func (SignatureGM) Equals 

func (sig SignatureGM) Equals(other Signature) bool

Equals --

func (SignatureGM) IsZero 

func (sig SignatureGM) IsZero() bool

IsZero --

func (SignatureGM) Raw 

func (sig SignatureGM) Raw() []byte

Raw --

type SignatureSecp256k1 

type SignatureSecp256k1 []byte

Implements Signature

func (SignatureSecp256k1) Bytes 

func (sig SignatureSecp256k1) Bytes() []byte

func (SignatureSecp256k1) Equals 

func (sig SignatureSecp256k1) Equals(other Signature) bool

func (SignatureSecp256k1) IsZero 

func (sig SignatureSecp256k1) IsZero() bool

func (SignatureSecp256k1) Raw 

func (sig SignatureSecp256k1) Raw() []byte

Raw --

func (SignatureSecp256k1) String 

func (sig SignatureSecp256k1) String() string

Source Files

View all Source files

Directories

Path Synopsis
Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve.
 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.
 Package bn256 implements a particular bilinear group at the 128-bit security level.
google
Package bn256 implements a particular bilinear group.
 Package bn256 implements a particular bilinear group.
Package merkle computes a deterministic minimal height Merkle tree hash.
 Package merkle computes a deterministic minimal height Merkle tree hash.
Package secp256k1 wraps the bitcoin secp256k1 C library.
 Package secp256k1 wraps the bitcoin secp256k1 C library.

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