def test_zip243(self):
coin = coins.by_name("Zcash")
for v in self.VECTORS:
tx = SignTx(
coin_name="Zcash",
inputs_count=len(v["inputs"]),
outputs_count=len(v["outputs"]),
version=v["version"],
lock_time=v["lock_time"],
expiry=v["expiry"],
overwintered=(v["version"] >= 3),
version_group_id=v["version_group_id"],
)
zip243 = Zip243()
for i in v["inputs"]:
txi = TxInputType()
txi.amount = i["amount"]
txi.prev_hash = unhexlify(i["prevout"][0])
txi.prev_index = i["prevout"][1]
txi.script_type = i["script_type"]
txi.sequence = i["sequence"]
zip243.add_prevouts(txi)
zip243.add_sequence(txi)
for o in v["outputs"]:
txo = TxOutputBinType()
txo.amount = o["amount"]
txo.script_pubkey = unhexlify(o["script_pubkey"])
zip243.add_output(txo)
self.assertEqual(hexlify(zip243.get_prevouts_hash()),
v["prevouts_hash"])
self.assertEqual(hexlify(zip243.get_sequence_hash()),
v["sequence_hash"])
self.assertEqual(hexlify(zip243.get_outputs_hash()),
v["outputs_hash"])
self.assertEqual(
hexlify(
zip243.preimage_hash(coin, tx, txi,
unhexlify(i["pubkeyhash"]),
v["hash_type"])),
v["preimage_hash"],
)
def test_tx_input(self):
inp = TxInputType(
address_n=[0],
amount=390000,
prev_hash=unhexlify(
"d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882"
),
prev_index=0,
sequence=0xffffffff,
script_sig=b"0123456789",
)
b = bytearray()
writers.write_tx_input(b, inp)
self.assertEqual(len(b), 32 + 4 + 1 + 10 + 4)
for bad_prevhash in (b"", b"x", b"hello", b"x" * 33):
inp.prev_hash = bad_prevhash
self.assertRaises(AssertionError, writers.write_tx_input, b, inp)
def test_zip143(self):
coin = coins.by_name("Zcash")
for v in self.VECTORS:
tx = SignTx(
coin_name="Zcash",
inputs_count=len(v["inputs"]),
outputs_count=len(v["outputs"]),
version=v["version"],
lock_time=v["lock_time"],
expiry=v["expiry"],
version_group_id=v["version_group_id"],
)
zip143 = Overwintered(tx, None, coin)
for i in v["inputs"]:
txi = TxInputType()
txi.amount = i["amount"]
txi.prev_hash = unhexlify(i["prevout"][0])
txi.prev_index = i["prevout"][1]
txi.script_type = i["script_type"]
txi.sequence = i["sequence"]
zip143.hash143_add_input(txi)
for o in v["outputs"]:
txo = TxOutputBinType()
txo.amount = o["amount"]
txo.script_pubkey = unhexlify(o["script_pubkey"])
zip143.hash143_add_output(txo, txo.script_pubkey)
self.assertEqual(hexlify(get_tx_hash(zip143.h_prevouts)),
v["prevouts_hash"])
self.assertEqual(hexlify(get_tx_hash(zip143.h_sequence)),
v["sequence_hash"])
self.assertEqual(hexlify(get_tx_hash(zip143.h_outputs)),
v["outputs_hash"])
self.assertEqual(
hexlify(
zip143.hash143_preimage_hash(txi,
unhexlify(i["pubkeyhash"]))),
v["preimage_hash"],
)
