sm2

Documentation

Index

• func BytesCombine(pBytes ...[]byte) []byte
• func Compress(a *PublicKey) []byte
• func Decrypt(priv *PrivateKey, data []byte) ([]byte, error)
• func Encrypt(pub *PublicKey, data []byte) ([]byte, error)
• func KeyExchangeA(klen int, ida, idb []byte, priA *PrivateKey, pubB *PublicKey, rpri *PrivateKey, ...) (k, s1, s2 []byte, err error)
• func KeyExchangeB(klen int, ida, idb []byte, priB *PrivateKey, pubA *PublicKey, rpri *PrivateKey, ...) (k, s1, s2 []byte, err error)
• func P256Sm2() elliptic.Curve
• func Sign(priv *PrivateKey, hash []byte) (r, s *big.Int, err error)
• func SignDataToSignDigit(sign []byte) (*big.Int, *big.Int, error)
• func SignDigitToSignData(r, s *big.Int) ([]byte, error)
• func Sm2Sign(priv *PrivateKey, msg, uid []byte) (r, s *big.Int, err error)
• func Sm2Verify(pub *PublicKey, msg, uid []byte, r, s *big.Int) bool
• func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool
• func WNafReversed(wnaf []int8) []int8
• func ZA(pub *PublicKey, uid []byte) ([]byte, error)
• type PrivateKey
  • func GenerateKey() (*PrivateKey, error)
  • func (priv *PrivateKey) Decrypt(data []byte) ([]byte, error)
  • func (priv *PrivateKey) Public() crypto.PublicKey
  • func (priv *PrivateKey) Sign(rand io.Reader, msg []byte, opts crypto.SignerOpts) ([]byte, error)
• type PublicKey
  • func Decompress(a []byte) *PublicKey
  • func (pub *PublicKey) Encrypt(data []byte) ([]byte, error)
  • func (pub *PublicKey) Verify(msg []byte, sign []byte) bool

Functions

func BytesCombine

func BytesCombine(pBytes ...[]byte) []byte

func Compress

func Compress(a *PublicKey) []byte

func Decrypt

func Decrypt(priv *PrivateKey, data []byte) ([]byte, error)

func Encrypt

func Encrypt(pub *PublicKey, data []byte) ([]byte, error)

* sm2密文结构如下: * x * y * hash * CipherText

func KeyExchangeA

func KeyExchangeA(klen int, ida, idb []byte, priA *PrivateKey, pubB *PublicKey, rpri *PrivateKey, rpubB *PublicKey) (k, s1, s2 []byte, err error)

KeyExchangeA 协商第二部，用户A调用，返回共享密钥k

func KeyExchangeB

func KeyExchangeB(klen int, ida, idb []byte, priB *PrivateKey, pubA *PublicKey, rpri *PrivateKey, rpubA *PublicKey) (k, s1, s2 []byte, err error)

KeyExchangeB 协商第二部，用户B调用， 返回共享密钥k

func P256Sm2

func P256Sm2() elliptic.Curve

func Sign

func Sign(priv *PrivateKey, hash []byte) (r, s *big.Int, err error)

func SignDataToSignDigit

func SignDataToSignDigit(sign []byte) (*big.Int, *big.Int, error)

func SignDigitToSignData

func SignDigitToSignData(r, s *big.Int) ([]byte, error)

func Sm2Sign

func Sm2Sign(priv *PrivateKey, msg, uid []byte) (r, s *big.Int, err error)

func Sm2Verify

func Sm2Verify(pub *PublicKey, msg, uid []byte, r, s *big.Int) bool

func Verify

func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool

func WNafReversed

func WNafReversed(wnaf []int8) []int8

func ZA

func ZA(pub *PublicKey, uid []byte) ([]byte, error)

ZA = H256(ENTLA || IDA || a || b || xG || yG || xA || yA)

Types

type PrivateKey

type PrivateKey struct {
	PublicKey
	D *big.Int
}

func GenerateKey

func GenerateKey() (*PrivateKey, error)

func (*PrivateKey) Decrypt

func (priv *PrivateKey) Decrypt(data []byte) ([]byte, error)

func (*PrivateKey) Public

func (priv *PrivateKey) Public() crypto.PublicKey

The SM2's private key contains the public key

func (*PrivateKey) Sign

func (priv *PrivateKey) Sign(rand io.Reader, msg []byte, opts crypto.SignerOpts) ([]byte, error)

sign format = 30 + len(z) + 02 + len(r) + r + 02 + len(s) + s, z being what follows its size, ie 02+len(r)+r+02+len(s)+s

type PublicKey

type PublicKey struct {
	elliptic.Curve
	X, Y *big.Int
}

func Decompress

func Decompress(a []byte) *PublicKey

func (*PublicKey) Encrypt

func (pub *PublicKey) Encrypt(data []byte) ([]byte, error)

func (*PublicKey) Verify

func (pub *PublicKey) Verify(msg []byte, sign []byte) bool