eckcdsa

Documentation

Overview

Package eckcdsa implements the EC-KCDSA(Korean Certificate-based Digital Signature Algorithm using Elliptic Curves) as defined in TTAK.KO-12.0015/R3

Index

• func Sign(rand io.Reader, priv *PrivateKey, h hash.Hash, data []byte) (r, s *big.Int, err error)
• func SignASN1(randReader io.Reader, priv *PrivateKey, h hash.Hash, data []byte) (sig []byte, err error)
• func Verify(pub *PublicKey, h hash.Hash, data []byte, r, s *big.Int) bool
• func VerifyASN1(pub *PublicKey, h hash.Hash, data, sig []byte) bool
• type PrivateKey
  • func FromECDSA(dpk *ecdsa.PrivateKey) *PrivateKey
  • func GenerateKey(c elliptic.Curve, randReader io.Reader) (*PrivateKey, error)
  • func (priv *PrivateKey) Equal(x crypto.PrivateKey) bool
  • func (priv *PrivateKey) Public() crypto.PublicKey
  • func (priv *PrivateKey) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error)
  • func (kpk *PrivateKey) ToECDSA() *ecdsa.PrivateKey
• type PublicKey
  • func (pub *PublicKey) Equal(x crypto.PublicKey) bool
• type SignerOpts
  • func (opts *SignerOpts) HashFunc() crypto.Hash

Functions

func Sign

func Sign(rand io.Reader, priv *PrivateKey, h hash.Hash, data []byte) (r, s *big.Int, err error)

Sign data using K generated randomly like in crypto/ecdsa packages.

func SignASN1

func SignASN1(randReader io.Reader, priv *PrivateKey, h hash.Hash, data []byte) (sig []byte, err error)

Sign data using K generated randomly like in crypto/ecdsa packages. returns the ASN.1 encoded signature.

func Verify

func Verify(pub *PublicKey, h hash.Hash, data []byte, r, s *big.Int) bool

func VerifyASN1

func VerifyASN1(pub *PublicKey, h hash.Hash, data, sig []byte) bool

VerifyASN1 verifies the ASN.1 encoded signature, sig, M, of hash using the public key, pub. Its return value records whether the signature is valid.

Types

type PrivateKey

type PrivateKey struct {
	PublicKey
	D *big.Int
}

PrivateKey represents a EC-KCDSA private key.

func FromECDSA

func FromECDSA(dpk *ecdsa.PrivateKey) *PrivateKey

func GenerateKey

func GenerateKey(c elliptic.Curve, randReader io.Reader) (*PrivateKey, error)

Generate the parameters

func (*PrivateKey) Equal

func (priv *PrivateKey) Equal(x crypto.PrivateKey) bool

Equal reports whether priv and x have the same value.

func (*PrivateKey) Public

func (priv *PrivateKey) Public() crypto.PublicKey

Public returns the public key corresponding to priv.

func (*PrivateKey) Sign

func (priv *PrivateKey) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error)

crypto.Signer

func (*PrivateKey) ToECDSA

func (kpk *PrivateKey) ToECDSA() *ecdsa.PrivateKey

type PublicKey

type PublicKey struct {
	elliptic.Curve

	X *big.Int
	Y *big.Int
}

PublicKey represents a EC-KCDSA public key.

func (*PublicKey) Equal

func (pub *PublicKey) Equal(x crypto.PublicKey) bool

Equal reports whether pub and x have the same value.

type SignerOpts

type SignerOpts struct {
	Hash crypto.Hash
}

SignerOpts contains options for creating and verifying EC-KCDSA signatures.

func (*SignerOpts) HashFunc

func (opts *SignerOpts) HashFunc() crypto.Hash

HashFunc returns opts.Hash so that SignerOpts implements crypto.SignerOpts.