ex25519

Documentation

Overview

Package ex25519 provides operations with expanded 512 bit ed25519 private keys. These keys can't be used with most of standard crypto tools and libraries. The package sole purpose is to add signing and public key derivation methods to BIP32-Ed25519 derived keys.

Index

• Constants
• func Sign(pk PrivateKey, message []byte) []byte
• type PrivateKey
  • func NewKeyFromBytes(src []byte) (PrivateKey, error)
  • func (p PrivateKey) Equal(x crypto.PrivateKey) bool
  • func (p PrivateKey) Public() crypto.PublicKey
  • func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error)

Constants

const (
	ExpandedKeySize = 64
	PrivateKeySize  = 96
	PublicKeySize   = 32
	SignatureSize   = 64
)

Functions

func Sign

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

Sign is identical to ed25519.PrivateKey.Sign with the hashing step omitted

Types

type PrivateKey

type PrivateKey []byte

func NewKeyFromBytes

func NewKeyFromBytes(src []byte) (PrivateKey, error)

NewKeyFromBytes interprets src as an expanded 64 byte key and expands it further to 96 bytes by appending the derived public key to it

func (PrivateKey) Equal

func (p PrivateKey) Equal(x crypto.PrivateKey) bool

func (PrivateKey) Public

func (p PrivateKey) Public() crypto.PublicKey

func (PrivateKey) Sign

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