sm2

package

v0.0.0-...-d9d7dc4 Latest Latest Go to latest Published: Aug 26, 2021 License: MIT Imports: 5 Imported by: 0

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Repository

github.com/newship/tools

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Documentation ¶

Rendered for

Overview ¶

Package elliptic implements several standard elliptic curves over prime fields.

Index ¶

func BarrettDiv(prod, mu *big.Int) (r *big.Int)
func CalcMu(p *big.Int) *big.Int
func DiffInt(x, y *big.Int) (delta int64, err error)
func Marshal(curve Curve, x, y *big.Int) []byte
func RecoverPoint(x1 *big.Int, v uint) (y1 *big.Int, err error)
func SM2asm() p256Curve
func Unmarshal(curve Curve, data []byte) (x, y *big.Int)
type Curve
type CurveParams

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func BarrettDiv ¶

func BarrettDiv(prod, mu *big.Int) (r *big.Int)

func CalcMu ¶

func CalcMu(p *big.Int) *big.Int

CalcMu mu = b^2k / p

func DiffInt ¶

func DiffInt(x, y *big.Int) (delta int64, err error)

func Marshal ¶

func Marshal(curve Curve, x, y *big.Int) []byte

Marshal converts a point into the uncompressed form specified in section 4.3.6 of ANSI X9.62.

func RecoverPoint ¶

func RecoverPoint(x1 *big.Int, v uint) (y1 *big.Int, err error)

func SM2asm ¶

func SM2asm() p256Curve

func Unmarshal ¶

func Unmarshal(curve Curve, data []byte) (x, y *big.Int)

Unmarshal converts a point, serialized by Marshal, into an x, y pair. It is an error if the point is not in uncompressed form or is not on the curve. On error, x = nil.