Пример #1
0
func main() {
	flag.Parse()
	if *version {
		fmt.Println(gogost.Version)
		return
	}
	h := gost34112012256.New()
	io.Copy(h, os.Stdin)
	fmt.Println(hex.EncodeToString(h.Sum(nil)))
}
Пример #2
0
// RFC 7836 VKO GOST R 34.10-2012 256-bit key agreement function.
// UKM is user keying material, also called VKO-factor.
func (prv *PrivateKey) KEK2012256(pub *PublicKey, ukm *big.Int) ([]byte, error) {
	if prv.mode != Mode2012 {
		return nil, errors.New("KEK2012 can not be used in Mode2001")
	}
	key, err := prv.KEK(pub, ukm)
	if err != nil {
		return nil, err
	}
	h := gost34112012256.New()
	h.Write(key)
	return h.Sum(key[:0]), nil
}