def merge_txs(txs, spendables, payables):
txs_in = []
txs_out = []
unspents = []
# we use a clever trick here to keep each tx_in corresponding with its tx_out
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[:smaller])
txs_out.extend(tx.txs_out[:smaller])
unspents.extend(tx.unspents[:smaller])
for tx in txs:
smaller = min(len(tx.txs_in), len(tx.txs_out))
txs_in.extend(tx.txs_in[smaller:])
txs_out.extend(tx.txs_out[smaller:])
unspents.extend(tx.unspents[smaller:])
for spendable in spendables:
txs_in.append(spendable.tx_in())
unspents.append(spendable)
for address, coin_value in payables:
script = standard_tx_out_script(address)
txs_out.append(TxOut(coin_value, script))
return txs_in, txs_out, unspents
def test_confirm_input(self):
# create a fake Spendable
COIN_VALUE = 100000000
spendables = [
Spendable(COIN_VALUE, standard_tx_out_script(BITCOIN_ADDRESSES[0]),
FAKE_HASHES[1], 0)
]
tx_1 = create_signed_tx(spendables,
BITCOIN_ADDRESSES[1:2],
wifs=WIFS[:1])
spendables = tx_1.tx_outs_as_spendable()
tx_db = dict((tx.hash(), tx) for tx in [tx_1])
tx_2 = create_signed_tx(spendables,
BITCOIN_ADDRESSES[2:3],
wifs=WIFS[:3])
tx_2.validate_unspents(tx_db)
tx_2 = create_signed_tx([s.as_dict() for s in spendables],
BITCOIN_ADDRESSES[2:3],
wifs=WIFS[:3])
tx_2.validate_unspents(tx_db)
tx_2 = create_signed_tx([s.as_text() for s in spendables],
BITCOIN_ADDRESSES[2:3],
wifs=WIFS[:3])
tx_2.validate_unspents(tx_db)
def main():
if len(sys.argv) != 2:
print("usage: %s address" % sys.argv[0])
sys.exit(-1)
# validate the address
address = sys.argv[1]
assert is_address_valid(address)
print("creating coinbase transaction to %s" % address)
tx_in = TxIn.coinbase_tx_in(script=b'')
tx_out = TxOut(50*1e8, standard_tx_out_script(address))
tx = Tx(1, [tx_in], [tx_out])
print("Here is the tx as hex:\n%s" % tx.as_hex())
def standard_tx(coins_from, coins_to):
txs_in = []
unspents = []
for h, idx, tx_out in coins_from:
txs_in.append(TxIn(h, idx))
unspents.append(tx_out)
txs_out = []
for coin_value, bitcoin_address in coins_to:
txs_out.append(
TxOut(coin_value, standard_tx_out_script(bitcoin_address)))
version, lock_time = 1, 0
tx = Tx(version, txs_in, txs_out, lock_time)
tx.set_unspents(unspents)
return tx
def test_p2sh_multisig_sequential_signing(self):
raw_scripts = [
h2b("52210234abcffd2e80ad01c2ec0276ad02682808169c6fafdd25ebfb60703df272b461"
"2102e5baaafff8094e4d77ce8b009d5ebc3de9110085ebd3d96e50cc7ce70faf175221"
"0316ee25e80eb6e6fc734d9c86fa580cbb9c4bfd94a19f0373a22353ececd4db6853ae"
)
]
txs_in = [
TxIn(previous_hash=h2b(
'43c95d14724437bccc102ccf86aba1ac02415524fd1aefa787db886bba52a10c'
),
previous_index=0)
]
txs_out = [
TxOut(10000,
standard_tx_out_script('3KeGeLFmsbmbVdeMLrWp7WYKcA3tdsB4AR'))
]
spendable = {
'script_hex':
'a914c4ed4de526461e3efbb79c8b688a6f9282c0464687',
'does_seem_spent':
0,
'block_index_spent':
0,
'coin_value':
10000,
'block_index_available':
0,
'tx_out_index':
0,
'tx_hash_hex':
'0ca152ba6b88db87a7ef1afd24554102aca1ab86cf2c10ccbc374472145dc943'
}
tx__prototype = Tx(version=DEFAULT_VERSION,
txs_in=txs_in,
txs_out=txs_out,
unspents=[Spendable.from_dict(spendable)])
key_1 = 'Kz6pytJCigYHeMsGLmfHQPJhN5og2wpeSVrU43xWwgHLCAvpsprh'
key_2 = 'Kz7NHgX7MBySA3RSKj9GexUSN6NepEDoPNugSPr5absRDoKgn2dT'
for ordered_keys in [(key_1, key_2), (key_2, key_1)]:
tx = copy.deepcopy(tx__prototype)
for key in ordered_keys:
self.assertEqual(tx.bad_signature_count(), 1)
tx.sign(LazySecretExponentDB([key], {}),
p2sh_lookup=build_p2sh_lookup(raw_scripts))
self.assertEqual(tx.bad_signature_count(), 0)
def test_sign_pay_to_script_multisig(self):
M, N = 3, 3
keys = [Key(secret_exponent=i) for i in range(1, N + 2)]
tx_in = TxIn.coinbase_tx_in(script=b'')
underlying_script = ScriptMultisig(
m=M, sec_keys=[key.sec() for key in keys[:N]]).script()
address = address_for_pay_to_script(underlying_script)
self.assertEqual(address, "39qEwuwyb2cAX38MFtrNzvq3KV9hSNov3q")
script = standard_tx_out_script(address)
tx_out = TxOut(1000000, script)
tx1 = Tx(version=1, txs_in=[tx_in], txs_out=[tx_out])
tx2 = tx_utils.create_tx(tx1.tx_outs_as_spendable(), [address])
hash160_lookup = build_hash160_lookup(key.secret_exponent()
for key in keys[:N])
p2sh_lookup = build_p2sh_lookup([underlying_script])
tx2.sign(hash160_lookup=hash160_lookup, p2sh_lookup=p2sh_lookup)
self.assertEqual(tx2.bad_signature_count(), 0)
def test_confirm_input_raises(self):
# create a fake Spendable
COIN_VALUE = 100000000
spendables = [
Spendable(COIN_VALUE, standard_tx_out_script(BITCOIN_ADDRESSES[0]),
FAKE_HASHES[1], 0)
]
tx_1 = create_signed_tx(spendables,
BITCOIN_ADDRESSES[1:2],
wifs=WIFS[:1])
spendables = tx_1.tx_outs_as_spendable()
spendables[0].coin_value += 100
tx_db = dict((tx.hash(), tx) for tx in [tx_1])
tx_2 = create_signed_tx(spendables,
BITCOIN_ADDRESSES[2:3],
wifs=WIFS[:3])
self.assertRaises(BadSpendableError, tx_2.validate_unspents, tx_db)
def test_simple_spend(self):
FEE = 10000
# create a fake Spendable
COIN_VALUE = 100000000
spendables = [
Spendable(COIN_VALUE, standard_tx_out_script(BITCOIN_ADDRESSES[0]),
FAKE_HASHES[1], 0)
]
EXPECTED_IDS = [
"d28bff6c4a8a0f9e7d5b7df0670d07b43c5613d8c9b14e84707b1e2c0154a978",
"7afbe63b00171b18f806ebd48190ebc1c68cadf286a85489c06ebe43d146489e",
"2b90c150ba1d080a0816952f5d9c2642d408989cbc4d4c540591c8c9241294bd",
"17b0b5b22887081595c1a9ad153e903f63bb8682ae59d6082df018dc617e5e67",
"dff1b34c243becb096ad2a2d6119973067a8137cc8bf95615e742bbf6f0944c1",
"206bbfbb759a8f91901d86b62390d7587f6097a32994ece7752d143fc8a02cee",
"7841412716ad35cbc9954e547ba85be89e5ed0b34ed5fb8d7594517318dc10d6",
"8b7e643bf47db46ada7a75b8498990b111fe20917b5610ca6759b8b0078ccd5e",
"5756f0a6d5a2bbb93a07f0729d3773aaafd21393ede3ec0e20b0b5219ca45548",
"32dcbb34965ea72d2caa59eb1e907aa28bac2afea43214c1809f5d8ed360f30e",
]
for count in range(1, 11):
tx = create_signed_tx(spendables,
BITCOIN_ADDRESSES[1:count + 1],
wifs=WIFS[:1])
self.assertEqual(tx.bad_signature_count(), 0)
self.assertEqual(tx.fee(), FEE)
self.assertEqual(tx.id(), EXPECTED_IDS[count - 1])
for idx in range(1, count + 1):
self.assertEqual(tx.txs_out[idx - 1].bitcoin_address(),
BITCOIN_ADDRESSES[idx])
# TODO: add check that s + s < generator for each signature
for i in range(count):
extra = (1 if i < ((COIN_VALUE - FEE) % count) else 0)
self.assertEqual(tx.txs_out[i].coin_value,
(COIN_VALUE - FEE) // count + extra)
def _test_sighash_single(self, netcode):
k0 = Key(secret_exponent=PRIV_KEYS[0],
is_compressed=True,
netcode=netcode)
k1 = Key(secret_exponent=PRIV_KEYS[1],
is_compressed=True,
netcode=netcode)
k2 = Key(secret_exponent=PRIV_KEYS[2],
is_compressed=True,
netcode=netcode)
k3 = Key(secret_exponent=PRIV_KEYS[3],
is_compressed=True,
netcode=netcode)
k4 = Key(secret_exponent=PRIV_KEYS[4],
is_compressed=True,
netcode=netcode)
k5 = Key(secret_exponent=PRIV_KEYS[5],
is_compressed=True,
netcode=netcode)
# Fake a coinbase transaction
coinbase_tx = Tx.coinbase_tx(k0.sec(), 500000000)
coinbase_tx.txs_out.append(
TxOut(1000000000,
pycoin_compile('%s OP_CHECKSIG' % b2h(k1.sec()))))
coinbase_tx.txs_out.append(
TxOut(1000000000,
pycoin_compile('%s OP_CHECKSIG' % b2h(k2.sec()))))
self.assertEqual(
'2acbe1006f7168bad538b477f7844e53de3a31ffddfcfc4c6625276dd714155a',
b2h_rev(coinbase_tx.hash()))
# Make the test transaction
txs_in = [
TxIn(coinbase_tx.hash(), 0),
TxIn(coinbase_tx.hash(), 1),
TxIn(coinbase_tx.hash(), 2),
]
txs_out = [
TxOut(900000000, standard_tx_out_script(k3.address())),
TxOut(800000000, standard_tx_out_script(k4.address())),
TxOut(800000000, standard_tx_out_script(k5.address())),
]
tx = Tx(1, txs_in, txs_out)
tx.set_unspents(coinbase_tx.txs_out)
self.assertEqual(
'791b98ef0a3ac87584fe273bc65abd89821569fd7c83538ac0625a8ca85ba587',
b2h_rev(tx.hash()))
sig_type = SIGHASH_SINGLE
sig_hash = tx.signature_hash(coinbase_tx.txs_out[0].script, 0,
sig_type)
self.assertEqual(
'cc52d785a3b4133504d1af9e60cd71ca422609cb41df3a08bbb466b2a98a885e',
b2h(to_bytes_32(sig_hash)))
sig = sigmake(k0, sig_hash, sig_type)
self.assertTrue(sigcheck(k0, sig_hash, sig[:-1]))
tx.txs_in[0].script = pycoin_compile(b2h(sig))
self.assertTrue(tx.is_signature_ok(0))
sig_hash = tx.signature_hash(coinbase_tx.txs_out[1].script, 1,
sig_type)
self.assertEqual(
'93bb883d70fccfba9b8aa2028567aca8357937c65af7f6f5ccc6993fd7735fb7',
b2h(to_bytes_32(sig_hash)))
sig = sigmake(k1, sig_hash, sig_type)
self.assertTrue(sigcheck(k1, sig_hash, sig[:-1]))
tx.txs_in[1].script = pycoin_compile(b2h(sig))
self.assertTrue(tx.is_signature_ok(1))
sig_hash = tx.signature_hash(coinbase_tx.txs_out[2].script, 2,
sig_type)
self.assertEqual(
'53ef7f67c3541bffcf4e0d06c003c6014e2aa1fb38ff33240b3e1c1f3f8e2a35',
b2h(to_bytes_32(sig_hash)))
sig = sigmake(k2, sig_hash, sig_type)
self.assertTrue(sigcheck(k2, sig_hash, sig[:-1]))
tx.txs_in[2].script = pycoin_compile(b2h(sig))
self.assertTrue(tx.is_signature_ok(2))
sig_type = SIGHASH_SINGLE | SIGHASH_ANYONECANPAY
sig_hash = tx.signature_hash(coinbase_tx.txs_out[0].script, 0,
sig_type)
self.assertEqual(
'2003393d246a7f136692ce7ab819c6eadc54ffea38eb4377ac75d7d461144e75',
b2h(to_bytes_32(sig_hash)))
sig = sigmake(k0, sig_hash, sig_type)
self.assertTrue(sigcheck(k0, sig_hash, sig[:-1]))
tx.txs_in[0].script = pycoin_compile(b2h(sig))
self.assertTrue(tx.is_signature_ok(0))
sig_hash = tx.signature_hash(coinbase_tx.txs_out[1].script, 1,
sig_type)
self.assertEqual(
'e3f469ac88e9f35e8eff0bd8ad4ad3bf899c80eb7645947d60860de4a08a35df',
b2h(to_bytes_32(sig_hash)))
sig = sigmake(k1, sig_hash, sig_type)
self.assertTrue(sigcheck(k1, sig_hash, sig[:-1]))
tx.txs_in[1].script = pycoin_compile(b2h(sig))
self.assertTrue(tx.is_signature_ok(1))
sig_hash = tx.signature_hash(coinbase_tx.txs_out[2].script, 2,
sig_type)
self.assertEqual(
'bacd7c3ab79cad71807312677c1788ad9565bf3c00ab9a153d206494fb8b7e6a',
b2h(to_bytes_32(sig_hash)))
sig = sigmake(k2, sig_hash, sig_type)
self.assertTrue(sigcheck(k2, sig_hash, sig[:-1]))
tx.txs_in[2].script = pycoin_compile(b2h(sig))
self.assertTrue(tx.is_signature_ok(2))