sm2

package

v1.0.1 Latest Latest Go to latest Published: Nov 17, 2019 License: MIT Imports: 13 Imported by: 0

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Repository

github.com/t1anchen/gogmlib

Links

Open Source Insights

README ¶

SM 2

前提条件

数字签名部分需要 sm3

参考和引用

全国信息安全标准化技术委员会. (2017). GB/T 32918.5-2017 信息安全技术 SM2椭圆曲线公钥密码算法第5部分：参数定义. http://openstd.samr.gov.cn/bzgk/gb/newGbInfo?hcno=728DEA8B8BB32ACFB6EF4BF449BC3077
国家密码管理局. (2010). 关于发布《SM2椭圆曲线公钥密码算法》公告. 国家密码管理局公告（第 21 号）. 发布于12月7日. http://www.oscca.gov.cn/sca/xxgk/2010-12/17/content_1002386.shtml

Documentation ¶

Index ¶

Constants
func GenKey(rand io.Reader) (*PrivKey, *PubKey, error)
func IsPointInfinity(x, y *big.Int) bool
func MarshalEncryptedToASN1DER(in []byte) ([]byte, error)
func UnmarshalEncryptedFromASN1DER(in []byte) ([]byte, error)
type ASN1DERCipher
type Curve
type PrivKey
type PubKey
type Signature

Constants ¶

View Source

const (
	BitSize      = 256
	KeyBytes     = (BitSize + 7) / 8
	UnCompressed = 0x04
)

Variables ¶

This section is empty.

Functions ¶

func GenKey ¶

func GenKey(rand io.Reader) (*PrivKey, *PubKey, error)

GenKey 生成密钥对

func IsPointInfinity ¶

func IsPointInfinity(x, y *big.Int) bool

func MarshalEncryptedToASN1DER ¶

func MarshalEncryptedToASN1DER(in []byte) ([]byte, error)

func UnmarshalEncryptedFromASN1DER ¶

func UnmarshalEncryptedFromASN1DER(in []byte) ([]byte, error)

Types ¶

type ASN1DERCipher ¶

type ASN1DERCipher struct {
	X, Y *big.Int
	C3   []byte
	C2   []byte
}

ASN1DERCipher 密文

type Curve ¶

type Curve struct {
	*elliptic.CurveParams
	RInverse *big.Int
	A        *big.Int
}

Curve 曲线和曲线参数 3.1

func GetSm2P256 ¶

func GetSm2P256() Curve

func Init ¶

func Init(A *big.Int, RInverse *big.Int, givenCurveParams *elliptic.CurveParams) *Curve

Init 初始化曲线

func InitWithRecommendedParams ¶

func InitWithRecommendedParams() *Curve

InitWithRecommendedParams 使用推荐参数初始化曲线

type PrivKey ¶

type PrivKey struct {
	D     *big.Int `json:"d"`
	Curve Curve    `json:"curve"`
}

PrivKey 私钥

func (*PrivKey) Decrypt ¶

func (sk *PrivKey) Decrypt(in []byte) ([]byte, error)

func (*PrivKey) GenPubKey ¶

func (sk *PrivKey) GenPubKey() *PubKey

GenPubKey 生成公钥

func (*PrivKey) Sign ¶

func (sk *PrivKey) Sign(userID []byte, data []byte) ([]byte, error)

Sign 用私钥生成基于 ASN.1 DER-encoded 的签名

func (*PrivKey) SignToASN1DER ¶

func (sk *PrivKey) SignToASN1DER(userID []byte, msg []byte) ([]byte, error)

SignToASN1DER 生成签名并输出成 ASN.1 DER 格式

func (*PrivKey) SignToBigInt ¶

func (sk *PrivKey) SignToBigInt(userID []byte, msg []byte) (r, s *big.Int, err error)

SignToBigInt 生成签名并输出成大数

func (*PrivKey) String ¶

func (sk *PrivKey) String() string

func (*PrivKey) ToBytes ¶

func (sk *PrivKey) ToBytes() []byte

ToBytes 私钥的字节流

type PubKey ¶

type PubKey struct {
	X     *big.Int `json:"x"`
	Y     *big.Int `json:"y"`
	Curve Curve    `json:"curve"`
}

PubKey 公钥

func (*PubKey) Encrypt ¶

func (pk *PubKey) Encrypt(msg []byte) ([]byte, error)

func (*PubKey) String ¶

func (pk *PubKey) String() string

func (*PubKey) ToBytes ¶

func (pk *PubKey) ToBytes() []byte

ToBytes 公钥的字节流

func (*PubKey) ToUncompressedBytes ¶

func (pk *PubKey) ToUncompressedBytes() []byte

ToUncompressedBytes 公钥未压缩字节流

func (*PubKey) Verify ¶

func (pk *PubKey) Verify(userID []byte, data []byte, sig []byte) bool

Verify 用公钥验证基于 ASN.1 DER-encoded 的签名

func (*PubKey) VerifyFromASN1DER ¶

func (pk *PubKey) VerifyFromASN1DER(userID []byte, msg []byte, sigBytes []byte) bool

VerifyFromASN1DER 验证签名

func (*PubKey) VerifyFromBigInt ¶

func (pk *PubKey) VerifyFromBigInt(userID []byte, msg []byte, r, s *big.Int) bool

type Signature ¶

type Signature struct {
	R, S *big.Int
}

Signature 签名

Source Files ¶

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Directories ¶

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