sm2

Documentation

Overview

Package sm2 implements china crypto standards.

Package sm2 implements china crypto standards.

Index

• Variables
• func Decrypt(c []byte, key *PrivateKey) ([]byte, error)
• func Encrypt(rand io.Reader, key *PublicKey, msg []byte) (der []byte, err error)
• func P256Sm2() elliptic.Curve
• func Sign(rand io.Reader, priv *PrivateKey, msg []byte) (r, s *big.Int, err error)
• func Verify(pub *PublicKey, msg []byte, r, s *big.Int) bool
• func VerifyById(pub *PublicKey, msg, id []byte, r, s *big.Int) bool
• type EncData
• type PrivateKey
  • func GenerateKey(rand io.Reader) (*PrivateKey, error)
  • func (priv *PrivateKey) Public() crypto.PublicKey
  • func (priv *PrivateKey) Sign(rand io.Reader, msg []byte, opts crypto.SignerOpts) ([]byte, error)
• type PublicKey
  • func (pub *PublicKey) Verify(msg []byte, sign []byte) bool

Variables

var DecryptionErr = errors.New("sm2: decryption error")

var EncryptionErr = errors.New("sm2: encryption error")

var SM2PARAM_A, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC", 16)

Functions

func Decrypt

func Decrypt(c []byte, key *PrivateKey) ([]byte, error)

func Encrypt

func Encrypt(rand io.Reader, key *PublicKey, msg []byte) (der []byte, err error)

func P256Sm2

func P256Sm2() elliptic.Curve

func Sign

func Sign(rand io.Reader, priv *PrivateKey, msg []byte) (r, s *big.Int, err error)

func Verify

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

func VerifyById

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

Types

type EncData

type EncData struct {
	X    *big.Int
	Y    *big.Int
	Hash []byte
	C2   []byte
}

sm2 enc structure in asn1

type PrivateKey

type PrivateKey struct {
	PublicKey
	D *big.Int
}

func GenerateKey

func GenerateKey(rand io.Reader) (*PrivateKey, 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)

type PublicKey

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

func (*PublicKey) Verify

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