p256

package

v0.0.0-...-a7f001f Latest Latest Go to latest Published: Feb 27, 2023 License: MIT Imports: 6 Imported by: 0

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Repository

github.com/go-webdl/crypto

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Open Source Insights

Documentation ¶

Index ¶

Variables
func BytesToPoint(p []byte) (x *big.Int, y *big.Int)
type CurveField
type Key

Constants ¶

This section is empty.

Variables ¶

View Source

var Curve = elliptic.P256().(CurveField)

Functions ¶

func BytesToPoint ¶

func BytesToPoint(p []byte) (x *big.Int, y *big.Int)

BytesToPoint maps a 32 bytes data into a point on the P256 curve using the Koblitz conversion algorithm. It may return nil if conversion fails. It can retrun nil with probability 64.645%.

Types ¶

type CurveField ¶

type CurveField interface {
	elliptic.Curve
	Inverse(k *big.Int) *big.Int
	CombinedMult(bigX, bigY *big.Int, baseScalar, scalar []byte) (x, y *big.Int)
}

Pull some internal fetures out for easier field operations

type Key ¶

type Key ecdsa.PrivateKey

func New ¶

func New(rand io.Reader) *Key

func PrivKey ¶

func PrivKey(D []byte) (priv *Key)

func PubKey ¶

func PubKey(XY []byte) (pubkey *Key)

func (*Key) Bytes ¶

func (key *Key) Bytes() []byte

func (*Key) Decrypt ¶

func (priv *Key) Decrypt(ciphertext []byte) []byte

func (*Key) Encrypt ¶

func (pubkey *Key) Encrypt(plaintext []byte, rand io.Reader) []byte

func (*Key) Sign ¶

func (priv *Key) Sign(digest []byte, rand io.Reader) []byte

func (*Key) Verify ¶

func (pub *Key) Verify(digest, sig []byte) bool

Source Files ¶

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