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Decred sighash and signing.

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This commit is contained in:
tecnovert
2024-04-27 16:27:14 +02:00
parent 3db723056f
commit 154c6d6832
8 changed files with 256 additions and 31 deletions
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58
tests/basicswap/extended/test_dcr.py
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@@ -16,10 +16,16 @@ import basicswap.config as cfg
from basicswap.basicswap import (
Coins,
)
from basicswap.util.crypto import hash160
from basicswap.util.crypto import (
hash160
)
from basicswap.interface.dcr.rpc import (
callrpc,
)
from basicswap.interface.dcr.messages import (
SigHashType,
TxSerializeType,
)
from tests.basicswap.common import (
stopDaemons,
waitForRPC,
@@ -146,7 +152,7 @@ class Test(BaseTest):
if num_passed >= 5:
ci0.rpc('generate', [1,])
except Exception as e:
logging.warning('coins_loop generate {}'.format(e))
logging.warning('coins_loop generate {}'.format(e))
@classmethod
def prepareExtraDataDir(cls, i):
@@ -256,7 +262,6 @@ class Test(BaseTest):
logging.info('---------- Test {} segwit'.format(self.test_coin_from.name))
swap_clients = self.swap_clients
ci0 = swap_clients[0].ci(self.test_coin_from)
assert (ci0.using_segwit() is True)
@@ -285,6 +290,53 @@ class Test(BaseTest):
assert (ser_out.hex() == sfrtx['hex'])
assert (f_decoded['txid'] == ctx.TxHash().hex())
def test_003_signature_hash(self):
logging.info('---------- Test {} signature_hash'.format(self.test_coin_from.name))
# Test that signing a transaction manually produces the same result when signed with the wallet
swap_clients = self.swap_clients
ci0 = swap_clients[0].ci(self.test_coin_from)
utxos = ci0.rpc_wallet('listunspent')
addr_out = ci0.rpc_wallet('getnewaddress')
rtx = ci0.rpc_wallet('createrawtransaction', [[], {addr_out: 2.0}])
account_from = ci0.rpc_wallet('getaccount', [self.dcr_mining_addr, ])
frtx = ci0.rpc_wallet('fundrawtransaction', [rtx, account_from])
sfrtx = ci0.rpc_wallet('signrawtransaction', [frtx['hex']])
ctx = ci0.loadTx(bytes.fromhex(frtx['hex']))
prevout = None
prevout_txid = ctx.vin[0].prevout.get_hash().hex()
prevout_n = ctx.vin[0].prevout.n
for utxo in utxos:
if prevout_txid == utxo['txid'] and prevout_n == utxo['vout']:
prevout = utxo
break
assert (prevout is not None)
tx_bytes_no_witness: bytes = ctx.serialize(TxSerializeType.NoWitness)
sig0 = ci0.rpc_wallet('createsignature', [prevout['address'], 0, SigHashType.SigHashAll, prevout['scriptPubKey'], tx_bytes_no_witness.hex()])
priv_key_wif = ci0.rpc_wallet('dumpprivkey', [prevout['address'], ])
sig_type, key_bytes = ci0.decodeKey(priv_key_wif)
addr_info = ci0.rpc_wallet('validateaddress', [prevout['address'],])
pk_hex: str = addr_info['pubkey']
sig0_py = ci0.signTx(key_bytes, tx_bytes_no_witness, 0, bytes.fromhex(prevout['scriptPubKey']), ci0.make_int(prevout['amount']))
tx_bytes_signed = ci0.setTxSignature(tx_bytes_no_witness, [sig0_py, bytes.fromhex(pk_hex)])
# Set prevout value
ctx = ci0.loadTx(tx_bytes_signed)
ctx.vin[0].value_in = ci0.make_int(prevout['amount'])
tx_bytes_signed = ctx.serialize()
assert (tx_bytes_signed.hex() == sfrtx['hex'])
sent_txid = ci0.rpc_wallet('sendrawtransaction', [tx_bytes_signed.hex(), ])
assert (len(sent_txid) == 64)
if __name__ == '__main__':
unittest.main()