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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, is_new_seed, is_old_seed,
var_int, op_push)
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)
def test_var_int(self):
for i in range(0xfd):
self.assertEqual(var_int(i), "{:02x}".format(i) )
self.assertEqual(var_int(0xfd), "fdfd00")
self.assertEqual(var_int(0xfe), "fdfe00")
self.assertEqual(var_int(0xff), "fdff00")
self.assertEqual(var_int(0x1234), "fd3412")
self.assertEqual(var_int(0xffff), "fdffff")
self.assertEqual(var_int(0x10000), "fe00000100")
self.assertEqual(var_int(0x12345678), "fe78563412")
self.assertEqual(var_int(0xffffffff), "feffffffff")
self.assertEqual(var_int(0x100000000), "ff0000000001000000")
self.assertEqual(var_int(0x0123456789abcdef), "ffefcdab8967452301")
def test_op_push(self):
self.assertEqual(op_push(0x00), '00')
self.assertEqual(op_push(0x12), '12')
self.assertEqual(op_push(0x4b), '4b')
self.assertEqual(op_push(0x4c), '4c4c')
self.assertEqual(op_push(0xfe), '4cfe')
self.assertEqual(op_push(0xff), '4dff00')
self.assertEqual(op_push(0x100), '4d0001')
self.assertEqual(op_push(0x1234), '4d3412')
self.assertEqual(op_push(0xfffe), '4dfeff')
self.assertEqual(op_push(0xffff), '4effff0000')
self.assertEqual(op_push(0x10000), '4e00000100')
self.assertEqual(op_push(0x12345678), '4e78563412')
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))
class Test_seeds(unittest.TestCase):
""" Test old and new seeds. """
def test_new_seed(self):
seed = "cram swing cover prefer miss modify ritual silly deliver chunk behind inform able"
self.assertTrue(is_new_seed(seed))
seed = "cram swing cover prefer miss modify ritual silly deliver chunk behind inform"
self.assertFalse(is_new_seed(seed))
def test_old_seed(self):
self.assertTrue(is_old_seed(" ".join(["like"] * 12)))
self.assertFalse(is_old_seed(" ".join(["like"] * 18)))
self.assertTrue(is_old_seed(" ".join(["like"] * 24)))
self.assertFalse(is_old_seed("not a seed"))
self.assertTrue(is_old_seed("0123456789ABCDEF" * 2))
self.assertTrue(is_old_seed("0123456789ABCDEF" * 4))