ed25519 - ActiveState ActiveGo 1.8

Package ed25519

import "golang.org/x/crypto/ed25519"

Overview ▾

Package ed25519 implements the Ed25519 signature algorithm. See http://ed25519.cr.yp.to/.

These functions are also compatible with the “Ed25519” function defined in https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05.


const (
    // PublicKeySize is the size, in bytes, of public keys as used in this package.
    PublicKeySize = 32
    // PrivateKeySize is the size, in bytes, of private keys as used in this package.
    PrivateKeySize = 64
    // SignatureSize is the size, in bytes, of signatures generated and verified by this package.
    SignatureSize = 64

func Sign

func Sign(privateKey PrivateKey, message []byte) []byte

Sign signs the message with privateKey and returns a signature. It will panic if len(privateKey) is not PrivateKeySize.

func Verify

func Verify(publicKey PublicKey, message, sig []byte) bool

Verify reports whether sig is a valid signature of message by publicKey. It will panic if len(publicKey) is not PublicKeySize.

type PrivateKey

PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.

type PrivateKey []byte

func (PrivateKey) Public

func (priv PrivateKey) Public() crypto.PublicKey

Public returns the PublicKey corresponding to priv.

func (PrivateKey) Sign

func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error)

Sign signs the given message with priv. Ed25519 performs two passes over messages to be signed and therefore cannot handle pre-hashed messages. Thus opts.HashFunc() must return zero to indicate the message hasn't been hashed. This can be achieved by passing crypto.Hash(0) as the value for opts.

type PublicKey

PublicKey is the type of Ed25519 public keys.

type PublicKey []byte

func GenerateKey

func GenerateKey(rand io.Reader) (publicKey PublicKey, privateKey PrivateKey, err error)

GenerateKey generates a public/private key pair using entropy from rand. If rand is nil, crypto/rand.Reader will be used.


Name Synopsis