Added private/public key tests
Including converting from a private key to a public key, and deriving the primary address from a private key.
This commit is contained in:
Chris Glass
parent
73c33820db
commit
413945435a
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@ -24,6 +24,7 @@ import sys
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import hmac
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from util import print_error
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from version import SEED_PREFIX
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try:
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import ecdsa
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@ -44,6 +45,7 @@ MIN_RELAY_TX_FEE = 1000
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EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
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DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
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def pw_encode(s, password):
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if password:
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secret = Hash(password)
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@ -51,6 +53,7 @@ def pw_encode(s, password):
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else:
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return s
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def pw_decode(s, password):
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if password is not None:
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secret = Hash(password)
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@ -63,17 +66,16 @@ def pw_decode(s, password):
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return s
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def rev_hex(s):
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return s.decode('hex')[::-1].encode('hex')
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def int_to_hex(i, length=1):
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s = hex(i)[2:].rstrip('L')
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s = "0"*(2*length - len(s)) + s
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return rev_hex(s)
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def var_int(i):
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# https://en.bitcoin.it/wiki/Protocol_specification#Variable_length_integer
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if i<0xfd:
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@ -85,6 +87,7 @@ def var_int(i):
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else:
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return "ff"+int_to_hex(i,8)
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def op_push(i):
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if i<0x4c:
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return int_to_hex(i)
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@ -96,25 +99,27 @@ def op_push(i):
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return '4e' + int_to_hex(i,4)
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def sha256(x):
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return hashlib.sha256(x).digest()
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def Hash(x):
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if type(x) is unicode: x=x.encode('utf-8')
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return sha256(sha256(x))
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hash_encode = lambda x: x[::-1].encode('hex')
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hash_decode = lambda x: x.decode('hex')[::-1]
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hmac_sha_512 = lambda x,y: hmac.new(x, y, hashlib.sha512).digest()
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def mnemonic_to_seed(mnemonic, passphrase):
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from pbkdf2 import PBKDF2
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import hmac
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PBKDF2_ROUNDS = 2048
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return PBKDF2(mnemonic, 'mnemonic' + passphrase, iterations = PBKDF2_ROUNDS, macmodule = hmac, digestmodule = hashlib.sha512).read(64)
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from version import SEED_PREFIX
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is_new_seed = lambda x: hmac_sha_512("Seed version", x.encode('utf8')).encode('hex')[0:2].startswith(SEED_PREFIX)
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def is_old_seed(seed):
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@ -214,6 +219,7 @@ def bc_address_to_hash_160(addr):
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__b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
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__b58base = len(__b58chars)
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def b58encode(v):
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""" encode v, which is a string of bytes, to base58."""
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@ -237,6 +243,7 @@ def b58encode(v):
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return (__b58chars[0]*nPad) + result
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def b58decode(v, length):
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""" decode v into a string of len bytes."""
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long_value = 0L
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@ -266,6 +273,7 @@ def EncodeBase58Check(vchIn):
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hash = Hash(vchIn)
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return b58encode(vchIn + hash[0:4])
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def DecodeBase58Check(psz):
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vchRet = b58decode(psz, None)
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key = vchRet[0:-4]
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@ -277,9 +285,11 @@ def DecodeBase58Check(psz):
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else:
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return key
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def PrivKeyToSecret(privkey):
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return privkey[9:9+32]
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def SecretToASecret(secret, compressed=False, addrtype=0):
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vchIn = chr((addrtype+128)&255) + secret
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if compressed: vchIn += '\01'
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@ -299,15 +309,19 @@ def regenerate_key(sec):
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b = b[0:32]
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return EC_KEY(b)
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def GetPubKey(pubkey, compressed=False):
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return i2o_ECPublicKey(pubkey, compressed)
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def GetPrivKey(pkey, compressed=False):
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return i2d_ECPrivateKey(pkey, compressed)
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def GetSecret(pkey):
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return ('%064x' % pkey.secret).decode('hex')
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def is_compressed(sec):
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b = ASecretToSecret(sec)
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return len(b) == 33
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@ -694,14 +708,7 @@ def bip32_public_derivation(xpub, branch, sequence):
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return EncodeBase58Check(xpub)
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def bip32_private_key(sequence, k, chain):
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for i in sequence:
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k, chain = CKD_priv(k, chain, i)
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return SecretToASecret(k, True)
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@ -5,7 +5,8 @@ from ecdsa.util import number_to_string
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from lib.bitcoin import (
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generator_secp256k1, point_to_ser, public_key_to_bc_address, EC_KEY,
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bip32_root, bip32_public_derivation, bip32_private_derivation, pw_encode,
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pw_decode)
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pw_decode, Hash, public_key_from_private_key, address_from_private_key,
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is_valid, is_private_key)
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try:
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import ecdsa
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@ -46,20 +47,17 @@ class Test_bitcoin(unittest.TestCase):
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#print signature
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EC_KEY.verify_message(addr_c, signature, message)
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def test_bip32(self):
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# see https://en.bitcoin.it/wiki/BIP_0032_TestVectors
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xpub, xprv = self.do_test_bip32("000102030405060708090a0b0c0d0e0f", "m/0'/1/2'/2/1000000000")
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xpub, xprv = self._do_test_bip32("000102030405060708090a0b0c0d0e0f", "m/0'/1/2'/2/1000000000")
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assert xpub == "xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy"
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assert xprv == "xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76"
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xpub, xprv = self.do_test_bip32("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542","m/0/2147483647'/1/2147483646'/2")
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xpub, xprv = self._do_test_bip32("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542","m/0/2147483647'/1/2147483646'/2")
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assert xpub == "xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt"
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assert xprv == "xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j"
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def do_test_bip32(self, seed, sequence):
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def _do_test_bip32(self, seed, sequence):
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xprv, xpub = bip32_root(seed)
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assert sequence[0:2] == "m/"
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path = 'm'
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@ -75,12 +73,43 @@ class Test_bitcoin(unittest.TestCase):
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return xpub, xprv
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def test_aes_homomorphic(self):
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"""Make sure AES is homomorphic."""
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payload = u'\u66f4\u7a33\u5b9a\u7684\u4ea4\u6613\u5e73\u53f0'
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password = u'secret'
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enc = pw_encode(payload, password)
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dec = pw_decode(enc, password)
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self.assertEqual(dec, payload)
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def test_aes(self):
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s = u'\u66f4\u7a33\u5b9a\u7684\u4ea4\u6613\u5e73\u53f0'
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self.do_test_aes(s, s)
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def test_hash(self):
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"""Make sure the Hash function does sha256 twice"""
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payload = u"test"
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expected = '\x95MZI\xfdp\xd9\xb8\xbc\xdb5\xd2R&x)\x95\x7f~\xf7\xfalt\xf8\x84\x19\xbd\xc5\xe8"\t\xf4'
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def do_test_aes(self, s, p):
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enc = pw_encode(s, p)
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dec = pw_decode(enc, p)
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assert dec == s
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result = Hash(payload)
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self.assertEqual(expected, result)
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class Test_keyImport(unittest.TestCase):
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""" The keys used in this class are TEST keys from
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https://en.bitcoin.it/wiki/BIP_0032_TestVectors"""
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private_key = "L52XzL2cMkHxqxBXRyEpnPQZGUs3uKiL3R11XbAdHigRzDozKZeW"
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public_key_hex = "0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2"
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main_address = "15mKKb2eos1hWa6tisdPwwDC1a5J1y9nma"
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def test_public_key_from_private_key(self):
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result = public_key_from_private_key(self.private_key)
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self.assertEqual(self.public_key_hex, result)
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def test_address_from_private_key(self):
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result = address_from_private_key(self.private_key)
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self.assertEqual(self.main_address, result)
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def test_is_valid_address(self):
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self.assertTrue(is_valid(self.main_address))
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self.assertFalse(is_valid("not an address"))
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def test_is_private_key(self):
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self.assertTrue(is_private_key(self.private_key))
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self.assertFalse(is_private_key(self.public_key_hex))
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