def _do_test_crypto(self, message): G = generator_secp256k1 _r = G.order() pvk = ecdsa.util.randrange(pow(2, 256)) % _r Pub = pvk * G pubkey_c = point_to_ser(Pub, True) #pubkey_u = point_to_ser(Pub,False) addr_c = public_key_to_p2pkh(pubkey_c) #print "Private key ", '%064x'%pvk eck = EC_KEY(number_to_string(pvk, _r)) #print "Compressed public key ", pubkey_c.encode('hex') enc = EC_KEY.encrypt_message(message, pubkey_c) dec = eck.decrypt_message(enc) self.assertEqual(message, dec) #print "Uncompressed public key", pubkey_u.encode('hex') #enc2 = EC_KEY.encrypt_message(message, pubkey_u) dec2 = eck.decrypt_message(enc) self.assertEqual(message, dec2) signature = eck.sign_message(message, True) #print signature EC_KEY.verify_message(eck, signature, message)
def _do_test_crypto(self, message): G = generator_secp256k1 _r = G.order() pvk = ecdsa.util.randrange( pow(2,256) ) %_r Pub = pvk*G pubkey_c = point_to_ser(Pub,True) #pubkey_u = point_to_ser(Pub,False) addr_c = public_key_to_bc_address(pubkey_c) #addr_u = public_key_to_bc_address(pubkey_u) #print "Private key ", '%064x'%pvk eck = EC_KEY(number_to_string(pvk,_r)) #print "Compressed public key ", pubkey_c.encode('hex') enc = EC_KEY.encrypt_message(message, pubkey_c) dec = eck.decrypt_message(enc) assert dec == message #print "Uncompressed public key", pubkey_u.encode('hex') #enc2 = EC_KEY.encrypt_message(message, pubkey_u) dec2 = eck.decrypt_message(enc) assert dec2 == message signature = eck.sign_message(message, True, addr_c) #print signature EC_KEY.verify_message(addr_c, signature, message)
class Crypto(object): def __init__(self): self.G = generator_secp256k1 self._r = self.G.order() def generate_key_pair(self): self.private_key = ecdsa.util.randrange(pow(2, 256)) % self._r self.eck = EC_KEY(number_to_string(self.private_key, self._r)) self.public_key = point_to_ser(self.private_key * self.G, True) def export_public_key(self): """ serialization of public key """ return self.public_key.encode('hex') def encrypt(self, message, pubkey): return self.eck.encrypt_message(message, pubkey.decode('hex')) def decrypt(self, message): return self.eck.decrypt_message(message) def hash(self, text, algorithm='sha224'): h = hashlib.new(algorithm) h.update(text) return h.digest()