def tx_from_json_dict(r):
version = r.get("version")
lock_time = r.get("locktime")
txs_in = []
for vin in r.get("vin"):
if "coinbase" in vin:
previous_hash = b'\0' * 32
script = h2b(vin.get("coinbase"))
previous_index = 4294967295
else:
previous_hash = h2b_rev(vin.get("txid"))
scriptSig = vin.get("scriptSig")
if "hex" in scriptSig:
script = h2b(scriptSig.get("hex"))
else:
script = tools.compile(scriptSig.get("asm"))
previous_index = vin.get("vout")
sequence = vin.get("sequence")
txs_in.append(TxIn(previous_hash, previous_index, script, sequence))
txs_out = []
for vout in r.get("vout"):
coin_value = btc_to_satoshi(decimal.Decimal(vout.get("value")))
script = tools.compile(vout.get("scriptPubKey").get("asm"))
txs_out.append(TxOut(coin_value, script))
tx = Tx(version, txs_in, txs_out, lock_time)
bh = r.get("blockhash")
if bh:
bh = h2b_rev(bh)
tx.confirmation_block_hash = bh
return tx
def build_spending_tx(script_in_bin, credit_tx):
txs_in = [TxIn(credit_tx.hash(), 0, script_in_bin, sequence=4294967295)]
txs_out = [TxOut(credit_tx.txs_out[0].coin_value, b'')]
spend_tx = Tx(1,
txs_in,
txs_out,
unspents=credit_tx.tx_outs_as_spendable())
return spend_tx
def test_p2sh_multisig_sequential_signing(self):
raw_scripts = [h2b('52210234abcffd2e80ad01c2ec0276ad02682808169c6fafdd25ebfb60703df272b4612102e5baaafff8094e4d77ce8b009d5ebc3de9110085ebd3d96e50cc7ce70faf1752210316ee25e80eb6e6fc734d9c86fa580cbb9c4bfd94a19f0373a22353ececd4db6853ae')]
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, 'tx_hash_hex': '0ca152ba6b88db87a7ef1afd24554102aca1ab86cf2c10ccbc374472145dc943',
'coin_value': 10000, 'block_index_available': 0, 'tx_out_index': 0}
tx__prototype = Tx(version=DEFAULT_VERSION, txs_in=txs_in, txs_out=txs_out, unspents=[Spendable.from_dict(spendable)])
key_1, key_2 = 'Kz6pytJCigYHeMsGLmfHQPJhN5og2wpeSVrU43xWwgHLCAvpsprh', '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 json_to_tx(json_text):
# transactions with non-standard lock time are not decoded properly
# for example, d1ef46055a84fd02ee82580d691064780def18614d98646371c3448ca20019ac
# there is no way to fix this until biteasy add a lock_time field to their output
d = json.loads(json_text).get("data")
txs_in = []
for d1 in d.get("inputs"):
previous_hash = h2b_rev(d1.get("outpoint_hash"))
previous_index = d1.get("outpoint_index")
script = h2b(d1.get("script_sig"))
sequence = 4294967295 # BRAIN DAMAGE
txs_in.append(TxIn(previous_hash, previous_index, script, sequence))
txs_out = []
for d1 in d.get("outputs"):
coin_value = d1.get("value")
script = h2b(d1.get("script_pub_key"))
txs_out.append(TxOut(coin_value, script))
version = d.get("version")
lock_time = 0 # BRAIN DAMAGE
return Tx(version, txs_in, txs_out, lock_time)
def construct_data_tx(data, _from, unused_utxo):
coins_from = spendables_for_address(_from, unused_utxo) #Ahora
if len(coins_from) < 1:
ErrorNotification.new('No bitcoins available to spend')
return 'No bitcoins available to spend'
txs_in = [
TxIn(coins_from[0].tx_hash, coins_from[0].tx_out_index,
coins_from[0].script)
]
script_text = 'OP_RETURN %s' % data.encode('hex')
script_bin = tools.compile(script_text)
new_txs_out = [TxOut(0, script_bin)]
version = 1
lock_time = 0
unsigned_tx = Tx(version, txs_in, new_txs_out, lock_time, coins_from)
return unsigned_tx
def build_credit_tx(script_out_bin, coin_value=0):
txs_in = [TxIn(b'\0' * 32, 4294967295, b'\0\0', sequence=4294967295)]
txs_out = [TxOut(coin_value, script_out_bin)]
return Tx(1, txs_in, txs_out)
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))