def test_prevouts(self):
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin, BasicApprover(self.tx, coin))
bip143.hash143_add_input(self.inp1)
bip143.hash143_add_input(self.inp2)
prevouts_hash = get_tx_hash(bip143.h_prevouts, double=coin.sign_hash_double)
self.assertEqual(hexlify(prevouts_hash), b'96b827c8483d4e9b96712b6713a7b68d6e8003a781feba36c31143470b4efd37')
def test_sequence(self):
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin, BasicApprover(self.tx, coin))
bip143.hash143_add_input(self.inp1)
bip143.hash143_add_input(self.inp2)
sequence_hash = get_tx_hash(bip143.h_sequence, double=coin.sign_hash_double)
self.assertEqual(hexlify(sequence_hash), b'52b0a642eea2fb7ae638c36f6252b6750293dbe574a806984b8e4d8548339a3b')
def test_bip143_prevouts(self):
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
bip143.hash143_add_input(self.inp1)
prevouts_hash = get_tx_hash(bip143.h_prevouts,
double=coin.sign_hash_double)
self.assertEqual(
hexlify(prevouts_hash),
b'b0287b4a252ac05af83d2dcef00ba313af78a3e9c329afa216eb3aa2a7b4613a'
)
def test_bip143_sequence(self):
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
bip143.hash143_add_input(self.inp1)
sequence_hash = get_tx_hash(bip143.h_sequence,
double=coin.sign_hash_double)
self.assertEqual(
hexlify(sequence_hash),
b'18606b350cd8bf565266bc352f0caddcf01e8fa789dd8a15386327cf8cabe198'
)
def test_bip143_outputs(self):
seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
for txo in [self.out1, self.out2]:
txo_bin = TxOutputBinType()
txo_bin.amount = txo.amount
script_pubkey = output_derive_script(txo.address, coin)
bip143.hash143_add_output(txo_bin, script_pubkey)
outputs_hash = get_tx_hash(bip143.h_outputs, double=coin.sign_hash_double)
self.assertEqual(hexlify(outputs_hash), b'de984f44532e2173ca0d64314fcefe6d30da6f8cf27bafa706da61df8a226c83')
def test_outputs(self):
seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin, BasicApprover(self.tx, coin))
for txo in [self.out1, self.out2]:
txo_bin = TxOutputBinType()
txo_bin.amount = txo.amount
script_pubkey = output_derive_script(txo.address, coin)
bip143.hash143_add_output(txo_bin, script_pubkey)
outputs_hash = get_tx_hash(bip143.h_outputs, double=coin.sign_hash_double)
self.assertEqual(hexlify(outputs_hash), b'863ef3e1a92afbfdb97f31ad0fc7683ee943e9abcf2501590ff8f6551f47e5e5')
def test_preimage_testdata(self):
seed = bip39.seed(
'alcohol woman abuse must during monitor noble actual mixed trade anger aisle',
'')
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
bip143.hash143_add_input(self.inp1)
bip143.hash143_add_input(self.inp2)
for txo in [self.out1, self.out2]:
txo_bin = TxOutputBinType()
txo_bin.amount = txo.amount
script_pubkey = output_derive_script(txo.address, coin)
bip143.hash143_add_output(txo_bin, script_pubkey)
keychain = Keychain(seed, [[coin.curve_name, []]])
node = keychain.derive(self.inp2.address_n)
# test data public key hash
# only for input 2 - input 1 is not segwit
result = bip143.hash143_preimage_hash(self.inp2, [node.public_key()],
1)
self.assertEqual(
hexlify(result),
b'2fa3f1351618b2532228d7182d3221d95c21fd3d496e7e22e9ded873cf022a8b'
)
def test_bip143_preimage_testdata(self):
seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
bip143.hash143_add_input(self.inp1)
for txo in [self.out1, self.out2]:
txo_bin = TxOutputBinType()
txo_bin.amount = txo.amount
script_pubkey = output_derive_script(txo.address, coin)
bip143.hash143_add_output(txo_bin, script_pubkey)
keychain = Keychain(seed, [[coin.curve_name, []]])
node = keychain.derive(self.inp1.address_n)
# test data public key hash
result = bip143.hash143_preimage_hash(self.inp1, [node.public_key()], 1)
self.assertEqual(hexlify(result), b'6e28aca7041720995d4acf59bbda64eef5d6f23723d23f2e994757546674bbd9')
def test_bip143_preimage_testdata(self):
seed = bip39.seed(
'alcohol woman abuse must during monitor noble actual mixed trade anger aisle',
'')
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
bip143.hash143_add_input(self.inp1)
for txo in [self.out1, self.out2]:
txo_bin = TxOutputBinType()
txo_bin.amount = txo.amount
script_pubkey = output_derive_script(txo, coin)
bip143.hash143_add_output(txo_bin, script_pubkey)
# test data public key hash
result = bip143.hash143_preimage_hash(
self.inp1, unhexlify('79091972186c449eb1ded22b78e40d009bdf0089'))
self.assertEqual(
hexlify(result),
b'64f3b0f4dd2bb3aa1ce8566d220cc74dda9df97d8490cc81d89d735c92e59fb6'
)
def test_preimage_testdata(self):
seed = bip39.seed(
'alcohol woman abuse must during monitor noble actual mixed trade anger aisle',
'')
coin = coins.by_name(self.tx.coin_name)
bip143 = Bitcoin(self.tx, None, coin)
bip143.hash143_add_input(self.inp1)
bip143.hash143_add_input(self.inp2)
for txo in [self.out1, self.out2]:
txo_bin = TxOutputBinType()
txo_bin.amount = txo.amount
script_pubkey = output_derive_script(txo, coin)
bip143.hash143_add_output(txo_bin, script_pubkey)
# test data public key hash
# only for input 2 - input 1 is not segwit
result = bip143.hash143_preimage_hash(
self.inp2, unhexlify('1d0f172a0ecb48aee1be1f2687d2963ae33f71a1'))
self.assertEqual(
hexlify(result),
b'c37af31116d1b27caf68aae9e3ac82f1477929014d5b917657d0eb49478cb670'
)
def test_coinjoin_lots_of_inputs(self):
denomination = 10000000
# Other's inputs.
inputs = [
TxInput(
prev_hash=b"",
prev_index=0,
amount=denomination + 1000000 * (i + 1),
script_type=InputScriptType.EXTERNAL,
sequence=0xffffffff,
) for i in range(99)
]
# Our input.
inputs.insert(
30,
TxInput(
prev_hash=b"",
prev_index=0,
address_n=[H_(84), H_(0), H_(0), 0, 1],
amount=denomination + 1000000,
script_type=InputScriptType.SPENDWITNESS,
sequence=0xffffffff,
))
# Other's CoinJoined outputs.
outputs = [
TxOutput(
amount=denomination,
script_type=OutputScriptType.PAYTOWITNESS,
) for i in range(99)
]
# Our CoinJoined output.
outputs.insert(
40,
TxOutput(
address_n=[H_(84), H_(0), H_(0), 0, 2],
amount=denomination,
script_type=OutputScriptType.PAYTOWITNESS,
))
coordinator_fee = int(self.fee_per_anonymity_percent / 100 *
len(outputs) * denomination)
fees = coordinator_fee + 10000
total_coordinator_fee = coordinator_fee * len(outputs)
# Other's change-outputs.
outputs.extend(
TxOutput(
amount=1000000 * (i + 1) - fees,
script_type=OutputScriptType.PAYTOWITNESS,
) for i in range(99))
# Our change-output.
outputs.append(
TxOutput(
address_n=[H_(84), H_(0), H_(0), 1, 1],
amount=1000000 - fees,
script_type=OutputScriptType.PAYTOWITNESS,
))
# Coordinator's output.
outputs.append(
TxOutput(
amount=total_coordinator_fee,
script_type=OutputScriptType.PAYTOWITNESS,
))
authorization = CoinJoinAuthorization(self.msg_auth)
tx = SignTx(outputs_count=len(outputs),
inputs_count=len(inputs),
coin_name=self.coin.coin_name,
lock_time=0)
approver = CoinJoinApprover(tx, self.coin, authorization)
signer = Bitcoin(tx, None, self.coin, approver)
for txi in inputs:
if txi.script_type == InputScriptType.EXTERNAL:
approver.add_external_input(txi)
else:
await_result(approver.add_internal_input(txi))
for txo in outputs:
if txo.address_n:
approver.add_change_output(txo, script_pubkey=bytes(22))
else:
await_result(
approver.add_external_output(txo, script_pubkey=bytes(22)))
await_result(approver.approve_tx(TxInfo(signer, tx), []))
def test_coinjoin_lots_of_inputs(self):
denomination = 10000000
coordinator_fee = int(self.max_fee_rate_percent / 100 * denomination)
fees = coordinator_fee + 500
# Other's inputs.
inputs = [
TxInput(
prev_hash=b"",
prev_index=0,
amount=denomination,
script_pubkey=bytes(22),
script_type=InputScriptType.EXTERNAL,
sequence=0xffffffff,
witness="",
) for i in range(99)
]
# Our input.
inputs.insert(
30,
TxInput(
prev_hash=b"",
prev_index=0,
address_n=[H_(84), H_(0), H_(0), 0, 1],
amount=denomination,
script_type=InputScriptType.SPENDWITNESS,
sequence=0xffffffff,
))
# Other's CoinJoined outputs.
outputs = [
TxOutput(
address="",
amount=denomination - fees,
script_type=OutputScriptType.PAYTOWITNESS,
payment_req_index=0,
) for i in range(99)
]
# Our CoinJoined output.
outputs.insert(
40,
TxOutput(
address="",
address_n=[H_(84), H_(0), H_(0), 0, 2],
amount=denomination - fees,
script_type=OutputScriptType.PAYTOWITNESS,
payment_req_index=0,
))
# Coordinator's output.
outputs.append(
TxOutput(
address="",
amount=coordinator_fee * len(outputs),
script_type=OutputScriptType.PAYTOWITNESS,
payment_req_index=0,
))
authorization = CoinJoinAuthorization(self.msg_auth)
tx = SignTx(outputs_count=len(outputs),
inputs_count=len(inputs),
coin_name=self.coin.coin_name,
lock_time=0)
approver = CoinJoinApprover(tx, self.coin, authorization)
signer = Bitcoin(tx, None, self.coin, approver)
# Compute payment request signature.
# Private key of m/0h for "all all ... all" seed.
private_key = b'?S\ti\x8b\xc5o{,\xab\x03\x194\xea\xa8[_:\xeb\xdf\xce\xef\xe50\xf17D\x98`\xb9dj'
h_pr = HashWriter(sha256())
writers.write_bytes_fixed(h_pr, b"SL\x00\x24", 4)
writers.write_bytes_prefixed(h_pr, b"") # Empty nonce.
writers.write_bytes_prefixed(h_pr, self.coordinator_name.encode())
writers.write_compact_size(h_pr, 0) # No memos.
writers.write_uint32(h_pr, self.coin.slip44)
h_outputs = HashWriter(sha256())
for txo in outputs:
writers.write_uint64(h_outputs, txo.amount)
writers.write_bytes_prefixed(h_outputs, txo.address.encode())
writers.write_bytes_fixed(h_pr, h_outputs.get_digest(), 32)
signature = secp256k1.sign(private_key, h_pr.get_digest())
tx_ack_payment_req = TxAckPaymentRequest(
recipient_name=self.coordinator_name,
signature=signature,
)
for txi in inputs:
if txi.script_type == InputScriptType.EXTERNAL:
approver.add_external_input(txi)
else:
await_result(approver.add_internal_input(txi))
await_result(approver.add_payment_request(tx_ack_payment_req, None))
for txo in outputs:
if txo.address_n:
approver.add_change_output(txo, script_pubkey=bytes(22))
else:
await_result(
approver.add_external_output(txo, script_pubkey=bytes(22)))
await_result(approver.approve_tx(TxInfo(signer, tx), []))
