Esempio n. 1
0
File: key.go Progetto: ZiRo-/srndv2
// generate a keypair
func GenSignKeypair() *KeyPair {
	sk_len := C.crypto_sign_secretkeybytes()
	sk := malloc(sk_len)
	pk_len := C.crypto_sign_publickeybytes()
	pk := malloc(pk_len)
	res := C.crypto_sign_keypair(pk.uchar(), sk.uchar())
	if res == 0 {
		return &KeyPair{pk, sk}
	}
	pk.Free()
	sk.Free()
	return nil
}
Esempio n. 2
0
File: key.go Progetto: 4cdn/srndv2
// generate a keypair
func GenSignKeypair() *KeyPair {
	sk_len := C.crypto_sign_secretkeybytes()
	sk := malloc(sk_len)
	pk_len := C.crypto_sign_publickeybytes()
	pk := malloc(pk_len)
	res := C.crypto_sign_keypair(pk.uchar(), sk.uchar())
	if res == 0 {
		return &KeyPair{pk, sk}
	}
	log.Println("nacl.GenSignKeypair() failed to generate keypair")
	pk.Free()
	sk.Free()
	return nil
}
Esempio n. 3
0
// verify a signed message
func CryptoVerify(smsg, pk []byte) bool {
	smsg_buff := NewBuffer(smsg)
	defer smsg_buff.Free()
	pk_buff := NewBuffer(pk)
	defer pk_buff.Free()

	if pk_buff.size != C.crypto_sign_publickeybytes() {
		return false
	}
	mlen := C.ulonglong(0)
	msg := malloc(C.size_t(len(smsg)))
	defer msg.Free()
	smlen := C.ulonglong(smsg_buff.size)
	return C.crypto_sign_open(msg.uchar(), &mlen, smsg_buff.uchar(), smlen, pk_buff.uchar()) != -1
}
Esempio n. 4
0
// verfiy a detached signature
// return true on valid otherwise false
func CryptoVerifyDetached(msg, sig, pk []byte) bool {
	msg_buff := NewBuffer(msg)
	defer msg_buff.Free()
	sig_buff := NewBuffer(sig)
	defer sig_buff.Free()
	pk_buff := NewBuffer(pk)
	defer pk_buff.Free()

	if pk_buff.size != C.crypto_sign_publickeybytes() {
		return false
	}

	// invalid sig size
	if sig_buff.size != C.crypto_sign_bytes() {
		return false
	}
	return C.crypto_sign_verify_detached(sig_buff.uchar(), msg_buff.uchar(), C.ulonglong(len(msg)), pk_buff.uchar()) == 0
}
Esempio n. 5
0
File: key.go Progetto: ZiRo-/srndv2
// make keypair from seed
func LoadSignKey(seed []byte) *KeyPair {
	seed_len := C.crypto_sign_seedbytes()
	if C.size_t(len(seed)) != seed_len {
		return nil
	}
	seedbuff := NewBuffer(seed)
	defer seedbuff.Free()
	pk_len := C.crypto_sign_publickeybytes()
	sk_len := C.crypto_sign_secretkeybytes()
	pkbuff := malloc(pk_len)
	skbuff := malloc(sk_len)
	res := C.crypto_sign_seed_keypair(pkbuff.uchar(), skbuff.uchar(), seedbuff.uchar())
	if res != 0 {
		pkbuff.Free()
		skbuff.Free()
		return nil
	}
	return &KeyPair{pkbuff, skbuff}
}
Esempio n. 6
0
File: key.go Progetto: 4cdn/srndv2
// make keypair from seed
func LoadSignKey(seed []byte) *KeyPair {
	seed_len := C.crypto_sign_seedbytes()
	if C.size_t(len(seed)) != seed_len {
		log.Println("nacl.SeedSignKey() invalid seed size", len(seed))
		return nil
	}
	seedbuff := NewBuffer(seed)
	defer seedbuff.Free()
	pk_len := C.crypto_sign_publickeybytes()
	sk_len := C.crypto_sign_secretkeybytes()
	pkbuff := malloc(pk_len)
	skbuff := malloc(sk_len)
	res := C.crypto_sign_seed_keypair(pkbuff.uchar(), skbuff.uchar(), seedbuff.uchar())
	if res != 0 {
		log.Println("nacl.SeedSignKey cannot derive keys from seed", res)
		pkbuff.Free()
		skbuff.Free()
		return nil
	}
	return &KeyPair{pkbuff, skbuff}
}
Esempio n. 7
0
File: key.go Progetto: ZiRo-/srndv2
// get public key from secret key
func GetSignPubkey(sk []byte) ([]byte, error) {
	sk_len := C.crypto_sign_secretkeybytes()
	if C.size_t(len(sk)) != sk_len {
		return nil, errors.New(fmt.Sprintf("nacl.GetSignPubkey() invalid secret key size %d != %d", len(sk), sk_len))
	}

	pk_len := C.crypto_sign_publickeybytes()
	pkbuff := malloc(pk_len)
	defer pkbuff.Free()

	skbuff := NewBuffer(sk)
	defer skbuff.Free()
	//XXX: hack
	res := C.crypto_sign_seed_keypair(pkbuff.uchar(), skbuff.uchar(), skbuff.uchar())

	if res != 0 {
		return nil, errors.New(fmt.Sprintf("nacl.GetSignPubkey() failed to get public key from secret key: %d", res))
	}

	return pkbuff.Bytes(), nil
}
Esempio n. 8
0
func SignPublicKeyBytes() int {
	return int(C.crypto_sign_publickeybytes())
}
Esempio n. 9
0
File: key.go Progetto: 4cdn/srndv2
func CryptoSignPublicLen() int {
	return int(C.crypto_sign_publickeybytes())
}