blsmultisig

package

v0.0.0-...-7ece11e Latest Latest Go to latest Published: Aug 29, 2023 License: MIT Imports: 12 Imported by: 0

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Repository

github.com/incognitochain/incognito-chain

Documentation ¶

Index ¶

Constants
Variables
func AKGen(idxPKByte []byte, combinedPKBytes []byte) *bn256.G2
func APKGen(committee []PublicKey, idx []int) *bn256.G2
func AiGen(listPKBytes []PublicKey, id int) *big.Int
func B2G1P(bytes []byte) *bn256.G1
func B2I(bytes []byte) *big.Int
func CmprG1(pn *bn256.G1) []byte
func CmprG2(pn *bn256.G2) []byte
func Combine(sigs [][]byte) ([]byte, error)
func DecmprG1(bytes []byte) (*bn256.G1, error)
func DecmprG2(bytes []byte) (*bn256.G2, error)
func G1P2I(point *bn256.G1) *big.Int
func Hash4Bls(data []byte) []byte
func I2Bytes(bn *big.Int, length int) []byte
func I2G1P(bigInt *big.Int) *bn256.G1
func KeyGen(seed []byte) (*big.Int, *bn256.G2)
func NewBLSSignatureError(key int, err error) error
func PKGen(sk *big.Int) *bn256.G2
func SKGen(seed []byte) *big.Int
func Sign(data, skBytes []byte, selfIdx int, committee []PublicKey) ([]byte, error)
func Verify(sig, data []byte, signersIdx []int, committee []PublicKey) (bool, error)
type BLSSignatureError
- func (e BLSSignatureError) Error() string
type PublicKey
- func PKBytes(pk *bn256.G2) PublicKey
type SecretKey
- func SKBytes(sk *big.Int) SecretKey

Constants ¶

View Source

const (
	// CCmprPnSz Compress point size
	CCmprPnSz = 32
	// CBigIntSz Big Int Byte array size
	CBigIntSz = 32
	// CMaskByte 0b10000000
	CMaskByte = 0x80
	// CNotMaskB 0b01111111
	CNotMaskB = 0x7F
	// CPKSz Public key size
	CPKSz = 128
	// CSKSz Secret key size
	CSKSz = 32
)

View Source

const (
	// CErr Error prefix
	CErr = "Details error: "
	// CErrInps Error input length
	CErrInps = "Input params error"
	// CErrCmpr Error when work with (de)compress
	CErrCmpr = "(De)Compress error"
)

View Source

const (
	UnExpectedError = iota
	InvalidPrivateKeyErr
	InvalidPublicKeyErr
	InvalidDataSignErr
	InvalidInputParamsSizeErr
	InvalidCommitteeInfoErr
	DecompressFromByteErr
	MemCacheErr
	JSONError
)

Variables ¶

View Source

var (

	// CommonPKs cache list publickey point in an epoch
	CommonPKs []*bn256.G2
	// CommonAPs cache list publickey^a_i point in an epoch
	CommonAPs []*bn256.G2
	// CommonAis cache list a_i integer in an epoch
	CommonAis []*big.Int
)

View Source

var Cacher *cache.Cache

View Source

var ErrCodeMessage = map[int]struct {
	Code    int
	Message string
}{
	UnExpectedError:           {-1100, "Unexpected error"},
	InvalidPrivateKeyErr:      {-1101, "Private key is invalid"},
	InvalidPublicKeyErr:       {-1102, "Public key is invalid"},
	InvalidDataSignErr:        {-1103, "Signed data is invalid"},
	InvalidCommitteeInfoErr:   {-1104, "Committee's info is invalid"},
	InvalidInputParamsSizeErr: {-1105, "Len of Input Params is invalid"},
	DecompressFromByteErr:     {-1106, "Decompress bytes array to Elliptic point error"},
	JSONError:                 {-1107, "JSON Marshal, Unmarshal error"},
	MemCacheErr:               {-1108, "Memcache error"},
}

Functions ¶

func AKGen ¶

func AKGen(idxPKByte []byte, combinedPKBytes []byte) *bn256.G2

AKGen take a seed and return BLS secret key

func APKGen ¶

func APKGen(committee []PublicKey, idx []int) *bn256.G2

func AiGen ¶

func AiGen(listPKBytes []PublicKey, id int) *big.Int

func B2G1P ¶

func B2G1P(bytes []byte) *bn256.G1

B2G1P is Bytes to Point, in BLS-BFT, it also called H0

func B2I ¶

func B2I(bytes []byte) *big.Int

B2I convert byte array to big int which belong to Fp

func CmprG1 ¶

func CmprG1(pn *bn256.G1) []byte

CmprG1 take a point in G1 group and return bytes array

func CmprG2 ¶

func CmprG2(pn *bn256.G2) []byte

CmprG2 take a point in G1 group and return bytes array

func Combine ¶

func Combine(sigs [][]byte) ([]byte, error)

Combine combine list of bls signature

func DecmprG1 ¶

func DecmprG1(bytes []byte) (*bn256.G1, error)

DecmprG1 is

func DecmprG2 ¶

func DecmprG2(bytes []byte) (*bn256.G2, error)

DecmprG2 is

func G1P2I ¶

func G1P2I(point *bn256.G1) *big.Int

G1P2I is Point to Big Int

func Hash4Bls ¶

func Hash4Bls(data []byte) []byte

Hash4Bls is Hash function for calculate block hash this is different from hash function for calculate transaction hash

func I2Bytes ¶

func I2Bytes(bn *big.Int, length int) []byte

I2Bytes take an integer and return bytes arrays of it with fixed length

func I2G1P ¶

func I2G1P(bigInt *big.Int) *bn256.G1

I2G1P is Big Int to Point, in BLS-BFT, it called H0

func KeyGen ¶

func KeyGen(seed []byte) (*big.Int, *bn256.G2)

KeyGen take an input seed and return BLS Key

func NewBLSSignatureError ¶

func NewBLSSignatureError(key int, err error) error

func PKGen ¶

func PKGen(sk *big.Int) *bn256.G2

PKGen take a secret key and return BLS public key

func SKGen ¶

func SKGen(seed []byte) *big.Int

SKGen take a seed and return BLS secret key

func Sign ¶

func Sign(data, skBytes []byte, selfIdx int, committee []PublicKey) ([]byte, error)

Sign return BLS signature

func Verify ¶

func Verify(sig, data []byte, signersIdx []int, committee []PublicKey) (bool, error)

Verify verify BLS sig on given data and list public key

Types ¶

type BLSSignatureError ¶

type BLSSignatureError struct {
	Code    int
	Message string
	// contains filtered or unexported fields
}

func (BLSSignatureError) Error ¶

func (e BLSSignatureError) Error() string

type PublicKey ¶

type PublicKey []byte

PublicKey is bytes of PublicKey point compressed

func PKBytes ¶

func PKBytes(pk *bn256.G2) PublicKey

PKBytes take input publickey point and return publickey bytes

type SecretKey ¶

type SecretKey []byte

SecretKey is bytes of SecretKey big Int in Fp

func SKBytes ¶

func SKBytes(sk *big.Int) SecretKey

SKBytes take input secretkey integer and return secretkey bytes

Source Files ¶

View all Source files

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