def test_parse(self):
pk = PrivateKey.parse('L5oLkpV3aqBJ4BgssVAsax1iRa77G5CVYnv9adQ6Z87te7TyUdSC')
want = 2**256-2**199
self.assertEqual(pk.secret, want)
pk = PrivateKey.parse('93XfLeifX7Jx7n7ELGMAf1SUR6f9kgQs8Xke8WStMwUtrDucMzn')
want = 2**256-2**201
self.assertEqual(pk.secret, want)
pk = PrivateKey.parse('5HvLFPDVgFZRK9cd4C5jcWki5Skz6fmKqi1GQJf5ZoMofid2Dty')
want = 0x0dba685b4511dbd3d368e5c4358a1277de9486447af7b3604a69b8d9d8b7889d
self.assertEqual(pk.secret, want)
pk = PrivateKey.parse('cNYfWuhDpbNM1JWc3c6JTrtrFVxU4AGhUKgw5f93NP2QaBqmxKkg')
want = 0x1cca23de92fd1862fb5b76e5f4f50eb082165e5191e116c18ed1a6b24be6a53f
self.assertEqual(pk.secret, want)
def spend_tx(cls, wifs, utxos, destination_addr, fee=540):
destination_address_data = cls.get_address_data(destination_addr)
testnet = destination_address_data['testnet']
if testnet:
prefix = bytes([cls.testnet_prefixes[0]])
else:
prefix = bytes([cls.p2pkh_prefixes[0]])
tx_ins = []
sequence = 0xffffffff
priv_lookup = {}
total = 0
for wif in wifs:
priv_key = PrivateKey.parse(wif)
addr = priv_key.point.address(priv_key.compressed, prefix=prefix)
# look up utxos for each address
address_data = cls.get_address_data(addr)
script_pubkey = address_data['script_pubkey']
spk = script_pubkey.serialize()
priv_lookup[spk] = priv_key
if not utxos:
raise RuntimeError('fetch utxos first')
for serialized_script_pubkey, prev_tx, prev_index, value in utxos:
tx_ins.append(
TxIn(prev_tx,
prev_index,
b'',
sequence,
value=value,
script_pubkey=serialized_script_pubkey))
total += value
num_tx_ins = len(tx_ins)
if num_tx_ins == 0:
raise RuntimeError('nothing to spend')
script_pubkey = destination_address_data['script_pubkey']
tx_out = TxOut(total - fee, script_pubkey.serialize())
tx = cls(cls.default_version, tx_ins, [tx_out], 0, testnet=testnet)
for index, tx_in in enumerate(tx_ins):
priv_key = priv_lookup[tx_in.script_pubkey().serialize()]
tx.sign_input(
index,
priv_key,
cls.default_hash_type,
compressed=priv_key.compressed,
)
if not tx.verify():
raise RuntimeError('failed validation')
return tx.serialize()
def test_b2x_sign(self):
# Generated from ./bitcoin2x-qt -regtest
wif = 'cVC6z7gnezHZut5yyuCX3x79tfcbauCWiFcBY92Vg4crfu4Maa5B'
prev_tx = 'b6d073333c1a8e4360b1e2c7fa2ed6b67b74272ad7fabf52a4e4732df5f47dbd'
prev_index = 0
prev_value = 5000000000
destination = 'mrVqpGm7F5MVCwsP4s3fQEN2GAaykJoTu4'
amount = 4996000000
priv_key = PrivateKey.parse(wif)
prev_script_pubkey = B2XTx.get_address_data(
priv_key.point.address())['script_pubkey'].serialize()
tx_in = TxIn(unhexlify(prev_tx), prev_index, b'', 0xffffffff, b'\x00',
prev_value, prev_script_pubkey)
script = B2XTx.get_address_data(
destination)['script_pubkey'].serialize()
tx_out = TxOut(amount, script)
tx = B2XTx(2, [tx_in], [tx_out], 0, testnet=True)
tx.sign(priv_key)
want = "0200000001bd7df4f52d73e4a452bffad72a27747bb6d62efac7e2b160438e1a3c3373d0b6000000006a47304402201df7c8c97443bd46da751e0051a4395ba3613be3604be97d3c801c21e3d23c79022012ad30b7ffd42ad7bb96f9157519f7e3c35409ed54f783a3c854a596343a6c713121030f96812693c4a50162134cfa307afb63580171963d6c4198e8e5cfeee2c92b60ffffffff0100e9c829010000001976a91478738f2c5a75397eb2f851597261f766a67d9b6388ac00000000"
self.assertTrue(tx.verify())
self.assertEqual(tx.serialize().hex(), want)
import pprint
raw="""\
0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86/5JaTXbAUmfPYZFRwrYaALK48fN6sFJp4rHqq2QSXs8ucfpE4yQU
04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a986818a7cb624532f062c1d1f8722084861c5c3291ccffef4ec6874/5Jb7fCeh1Wtm4yBBg3q3XbT6B525i17kVhy3vMC9AqfR6FH2qGk
048d2455d2403e08708fc1f556002f1b6cd83f992d085097f9974ab08a28838f07896fbab08f39495e15fa6fad6edbfb1e754e35fa1c7844c41f322a1863d46213/5JFjmGo5Fww9p8gvx48qBYDJNAzR9pmH5S389axMtDyPT8ddqmw\
"""
from ecc import PrivateKey, S256Point
from helper import little_endian_to_int, big_endian_to_int
from binascii import unhexlify, hexlify
import script
import helper
from tx import TxIn, TxOut, Tx
key_pairs = [x.split('/') for x in map(str.strip,raw.split('\n'))]
key_pairs = [(S256Point.parse(unhexlify(sec)), PrivateKey.parse(wif, compressed=False)) for sec, wif in key_pairs]
assert all(p == pk.point for p,pk in key_pairs)
pubkeys = [p for p, _ in key_pairs]
OP_n = lambda n: 0x51 + n - 1
n_required = 2
elements = [OP_n(n_required)] + [pk.sec(compressed=False) for pk in pubkeys] + [OP_n(len(pubkeys))] + [174]
redeemScript = script.Script(elements)
address=helper.h160_to_p2sh_address(helper.hash160(redeemScript.serialize()), testnet=False)
redeemScript=hexlify(redeemScript.serialize())
assert address=="3QJmV3qfvL9SuYo34YihAf3sRCW3qSinyC"
assert redeemScript=="52410491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f864104865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a986818a7cb624532f062c1d1f8722084861c5c3291ccffef4ec687441048d2455d2403e08708fc1f556002f1b6cd83f992d085097f9974ab08a28838f07896fbab08f39495e15fa6fad6edbfb1e754e35fa1c7844c41f322a1863d4621353ae".encode('ascii')
print(hexlify(helper.hash160(unhexlify(redeemScript))))
