import unittest import sys from ecdsa.util import number_to_string from lib.bitcoin import ( generator_secp256k1, point_to_ser, public_key_to_bc_address, EC_KEY, bip32_root, bip32_public_derivation, bip32_private_derivation, pw_encode, pw_decode, Hash, public_key_from_private_key, address_from_private_key, is_valid, is_private_key, xpub_from_xprv) try: import ecdsa except ImportError: sys.exit("Error: python-ecdsa does not seem to be installed. Try 'sudo pip install ecdsa'") class Test_bitcoin(unittest.TestCase): def test_crypto(self): for message in ["Chancellor on brink of second bailout for banks", chr(255)*512]: self._do_test_crypto(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) def test_bip32(self): # see https://en.bitcoin.it/wiki/BIP_0032_TestVectors xpub, xprv = self._do_test_bip32("000102030405060708090a0b0c0d0e0f", "m/0'/1/2'/2/1000000000", testnet=False) assert xpub == "xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy" assert xprv == "xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76" xpub, xprv = self._do_test_bip32("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542","m/0/2147483647'/1/2147483646'/2", testnet=False) assert xpub == "xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt" assert xprv == "xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j" def test_bip32_testnet(self): xpub, xprv = self._do_test_bip32("000102030405060708090a0b0c0d0e0f", "m/0'/1/2'/2/1000000000", testnet=True) assert xpub == "tpubDHNy3kAG39ThyiwwsgoKY4iRenXDRtce8qdCFJZXPMCJg5dsCUHayp84raLTpvyiNA9sXPob5rgqkKvkN8S7MMyXbnEhGJMW64Cf4vFAoaF" assert xprv == "tprv8kgvuL81tmn36Fv9z38j8f4K5m1HGZRjZY2QxnXDy5PuqbP6a5TzoKWCgTcGHBu66W3TgSbAu2yX6sPza5FkHmy564Sh6gmCPUNeUt4yj2x" xpub, xprv = self._do_test_bip32("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542","m/0/2147483647'/1/2147483646'/2", testnet=True) assert xpub == "tpubDG9qJLc8hq8PMG7y4sQEodLSocEkfj4mGrUC75b7G76mDoqybcUXvmvRsruvLeF14mhixobZwZP6LwqeFePKU83Sv8ZnxWdHBb6VzE6zbvC" assert xprv == "tprv8jTo9vZtZTSiTo6BBDjeQDgLEaipWPsrhYsQpZYoqqJNPKbCyDewkHJZhkoSHiWYCUf1Gm4TFzQxcG4D6s1J9Hsn4whDK7QYyHHokJeUuac" def _do_test_bip32(self, seed, sequence, testnet): xprv, xpub = bip32_root(seed.decode('hex'), testnet) assert sequence[0:2] == "m/" path = 'm' sequence = sequence[2:] for n in sequence.split('/'): child_path = path + '/' + n if n[-1] != "'": xpub2 = bip32_public_derivation(xpub, path, child_path, testnet) xprv, xpub = bip32_private_derivation(xprv, path, child_path, testnet) if n[-1] != "'": assert xpub == xpub2 path = child_path return xpub, xprv def test_aes_homomorphic(self): """Make sure AES is homomorphic.""" payload = u'\u66f4\u7a33\u5b9a\u7684\u4ea4\u6613\u5e73\u53f0' password = u'secret' enc = pw_encode(payload, password) dec = pw_decode(enc, password) self.assertEqual(dec, payload) def test_aes_encode_without_password(self): """When not passed a password, pw_encode is noop on the payload.""" payload = u'\u66f4\u7a33\u5b9a\u7684\u4ea4\u6613\u5e73\u53f0' enc = pw_encode(payload, None) self.assertEqual(payload, enc) def test_aes_deencode_without_password(self): """When not passed a password, pw_decode is noop on the payload.""" payload = u'\u66f4\u7a33\u5b9a\u7684\u4ea4\u6613\u5e73\u53f0' enc = pw_decode(payload, None) self.assertEqual(payload, enc) def test_aes_decode_with_invalid_password(self): """pw_decode raises an Exception when supplied an invalid password.""" payload = u"blah" password = u"uber secret" wrong_password = u"not the password" enc = pw_encode(payload, password) self.assertRaises(Exception, pw_decode, enc, wrong_password) def test_hash(self): """Make sure the Hash function does sha256 twice""" payload = u"test" expected = '\x95MZI\xfdp\xd9\xb8\xbc\xdb5\xd2R&x)\x95\x7f~\xf7\xfalt\xf8\x84\x19\xbd\xc5\xe8"\t\xf4' result = Hash(payload) self.assertEqual(expected, result) def test_xpub_from_xprv(self): """We can derive the xpub key from a xprv.""" # Taken from test vectors in https://en.bitcoin.it/wiki/BIP_0032_TestVectors xpub = "xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy" xprv = "xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76" result = xpub_from_xprv(xprv) self.assertEqual(result, xpub) def test_xpub_from_xprv_testnet(self): """We can derive the xpub key from a xprv using testnet headers.""" xpub = "tpubDHNy3kAG39ThyiwwsgoKY4iRenXDRtce8qdCFJZXPMCJg5dsCUHayp84raLTpvyiNA9sXPob5rgqkKvkN8S7MMyXbnEhGJMW64Cf4vFAoaF" xprv = "tprv8kgvuL81tmn36Fv9z38j8f4K5m1HGZRjZY2QxnXDy5PuqbP6a5TzoKWCgTcGHBu66W3TgSbAu2yX6sPza5FkHmy564Sh6gmCPUNeUt4yj2x" result = xpub_from_xprv(xprv, testnet=True) self.assertEqual(result, xpub) class Test_keyImport(unittest.TestCase): """ The keys used in this class are TEST keys from https://en.bitcoin.it/wiki/BIP_0032_TestVectors""" private_key = "L52XzL2cMkHxqxBXRyEpnPQZGUs3uKiL3R11XbAdHigRzDozKZeW" public_key_hex = "0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2" main_address = "15mKKb2eos1hWa6tisdPwwDC1a5J1y9nma" def test_public_key_from_private_key(self): result = public_key_from_private_key(self.private_key) self.assertEqual(self.public_key_hex, result) def test_address_from_private_key(self): result = address_from_private_key(self.private_key) self.assertEqual(self.main_address, result) def test_is_valid_address(self): self.assertTrue(is_valid(self.main_address)) self.assertFalse(is_valid("not an address")) def test_is_private_key(self): self.assertTrue(is_private_key(self.private_key)) self.assertFalse(is_private_key(self.public_key_hex))