sm2soft

package

v0.0.4 Latest Latest Go to latest Published: Feb 1, 2023 License: Apache-2.0 Imports: 13 Imported by: 0

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Valid go.mod file
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Repository

github.com/hxx258456/ccgo

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Documentation ¶

Index ¶

Variables
func BytesCombine(pBytes ...[]byte) []byte
func CipherMarshal(data []byte) ([]byte, error)
func CipherUnmarshal(data []byte) ([]byte, error)
func Compress(a *PublicKey) []byte
func Decrypt(priv *PrivateKey, data []byte, mode int) ([]byte, error)
func DecryptAsn1(pub *PrivateKey, data []byte) ([]byte, error)
func Encrypt(pub *PublicKey, data []byte, random io.Reader, mode int) ([]byte, error)
func EncryptAsn1(pub *PublicKey, data []byte, rand io.Reader) ([]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 SignASN1(rand io.Reader, priv *PrivateKey, hash []byte) ([]byte, error)
func SignDataToSignDigit(sign []byte) (*big.Int, *big.Int, error)
func SignDigitToSignData(r, s *big.Int) ([]byte, error)
func Sm2Sign(priv *PrivateKey, signContentDigest, uid []byte, random io.Reader) (r, s *big.Int, err error)
func Sm2Verify(pub *PublicKey, signContentDigest, uid []byte, r, s *big.Int) bool
func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool
func VerifyASN1(pub *PublicKey, hash, sig []byte) bool
func WNafReversed(wnaf []int8) []int8
func ZA(pub *PublicKey, uid []byte) ([]byte, error)
type PrivateKey
- func GenerateKey(random io.Reader) (*PrivateKey, error)
- func (priv *PrivateKey) Decrypt(_ io.Reader, msg []byte, _ crypto.DecrypterOpts) (plaintext []byte, err error)
- func (priv *PrivateKey) DecryptAsn1(data []byte) ([]byte, error)
- func (priv *PrivateKey) Equal(x crypto.PrivateKey) bool
- func (priv *PrivateKey) Public() crypto.PublicKey
- func (priv *PrivateKey) Sign(random io.Reader, signContentDigest []byte, signer crypto.SignerOpts) ([]byte, error)
type PublicKey
- func Decompress(a []byte) *PublicKey
- func (pub *PublicKey) EncryptAsn1(data []byte, random io.Reader) ([]byte, error)
- func (pub *PublicKey) Equal(x crypto.PublicKey) bool
- func (pub *PublicKey) Sm3Digest(msg, uid []byte) ([]byte, error)
- func (pub *PublicKey) Verify(signContentDigest []byte, sig []byte) bool

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	C1C3C2 = 0
	C1C2C3 = 1
)

Functions ¶

func BytesCombine ¶

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

func CipherMarshal ¶

func CipherMarshal(data []byte) ([]byte, error)

CipherMarshal sm2密文转asn.1编码格式

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

func CipherUnmarshal ¶

func CipherUnmarshal(data []byte) ([]byte, error)

CipherUnmarshal sm2密文asn.1编码格式转C1|C3|C2拼接格式

func Compress ¶

func Compress(a *PublicKey) []byte

func Decrypt ¶

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

DecryptAsn1 sm2解密，解析asn.1编码格式的密文内容

func DecryptAsn1 ¶

func DecryptAsn1(pub *PrivateKey, data []byte) ([]byte, error)

DecryptAsn1 sm2解密，解析asn.1编码格式的密文内容

func Encrypt ¶

func Encrypt(pub *PublicKey, data []byte, random io.Reader, mode int) ([]byte, error)

Encrypt sm2非对称加密，支持C1C3C2(mode = 0)与C1C2C3(mode = 1)两种模式，默认使用C1C3C2模式。不同的模式表示不同的密文结构，其中C1C2C3的意义： C1 : sm2椭圆曲线上的某个点，每次加密得到的点不一样 C2 : 密文 C3 : 明文加盐后的摘要

func EncryptAsn1 ¶

func EncryptAsn1(pub *PublicKey, data []byte, rand io.Reader) ([]byte, error)

EncryptAsn1 sm2加密，返回asn.1编码格式的密文内容

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

P256Sm2 获取SM2P256椭圆曲线该曲线是一个单例

func SignASN1 ¶

func SignASN1(rand io.Reader, priv *PrivateKey, hash []byte) ([]byte, error)

SignASN1 使用私钥priv对一个hash值进行签名。返回的签名为DER字节数组，对(r,s)做了asn1编码。

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, signContentDigest, uid []byte, random io.Reader) (r, s *big.Int, err error)

Sm2Sign SM2签名

priv : 签名私钥 *sm2.PrivateKey
signContentDigest : 签名内容摘要(散列值)
uid : 内部混合摘要计算用uid, 长度16的字节数组，可以传 nil
random : 随机数获取用

func Sm2Verify ¶

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

Sm2Verify SM2验签

pub : 验签公钥, *sm2.PublicKey
signContentDigest : 签名内容摘要(散列值)
uid : 内部混合摘要计算用uid, 长度16的字节数组，可以传 nil
r, s : 签名

func Verify ¶

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

Verify SM2验签

pub : 验签公钥, *sm2.PublicKey
hash : 签名内容摘要(散列值)
r, s : 签名

func VerifyASN1 ¶

func VerifyASN1(pub *PublicKey, hash, sig []byte) bool

VerifyASN1 使用公钥pub对hash和sig进行验签。

pub 公钥
hash 签名内容摘要(散列值)
sig 签名DER字节数组(对(r,s)做了asn1编码，因此会先做asn1解码)

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          // 公钥
	D         *big.Int // 私钥，[1,n-1]区间的随机数
}

PrivateKey SM2私钥结构体

func GenerateKey ¶

func GenerateKey(random io.Reader) (*PrivateKey, error)

GenerateKey 基于P256Sm2曲线生成sm2的公私钥

func (*PrivateKey) Decrypt ¶

func (priv *PrivateKey) Decrypt(_ io.Reader, msg []byte, _ crypto.DecrypterOpts) (plaintext []byte, err error)

Decrypt crypto.Decrypter

func (*PrivateKey) DecryptAsn1 ¶

func (priv *PrivateKey) DecryptAsn1(data []byte) ([]byte, error)

DecryptAsn1 sm2解密，C1C3C2，asn1解码

func (*PrivateKey) Equal ¶

func (priv *PrivateKey) Equal(x crypto.PrivateKey) bool

func (*PrivateKey) Public ¶

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

Public The SM2's private key contains the public key

func (*PrivateKey) Sign ¶

func (priv *PrivateKey) Sign(random io.Reader, signContentDigest []byte, signer crypto.SignerOpts) ([]byte, error)

Sign 使用priv私钥对签名内容摘要做SM2签名，参数signer目前没有使用，但仍要求传入外部对明文消息做摘要的散列算法。使用priv私钥对签名内容摘要做SM2签名，参数signer目前没有使用，但仍要求传入外部对明文消息做摘要的散列算法。返回的签名为DER字节数组，对(r,s)做了asn1编码。

random : 随机数获取用, 如 rand.Reader
signContentDigest : 签名内容摘要(散列值)
signer : 外部对签名内容进行摘要计算使用的散列函数

type PublicKey ¶

type PublicKey struct {
	elliptic.Curve          // 椭圆曲线
	X, Y           *big.Int // 公钥座标
}

PublicKey SM2公钥结构体

func Decompress ¶

func Decompress(a []byte) *PublicKey

func (*PublicKey) EncryptAsn1 ¶

func (pub *PublicKey) EncryptAsn1(data []byte, random io.Reader) ([]byte, error)

EncryptAsn1 sm2加密，C1C3C2，asn1编码

func (*PublicKey) Equal ¶

func (pub *PublicKey) Equal(x crypto.PublicKey) bool

func (*PublicKey) Sm3Digest ¶

func (pub *PublicKey) Sm3Digest(msg, uid []byte) ([]byte, error)

Sm3Digest 对签名内容进行SM3摘要计算，摘要计算前混入sm2椭圆曲线部分参数与公钥并预散列一次。

func (*PublicKey) Verify ¶

func (pub *PublicKey) Verify(signContentDigest []byte, sig []byte) bool

Verify 使用pub公钥对签名sig做验签。

signContentDigest : 签名内容摘要(散列值)
sig : 签名DER字节数组(对(r,s)做了asn1编码，因此会先做asn1解码)

Source Files ¶

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