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Decred: Secret hash swap tests.

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This commit is contained in:
tecnovert
2024-05-15 11:39:32 +02:00
parent d527ec4974
commit 76879a2ff5
24 changed files with 1025 additions and 301 deletions
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51
basicswap/protocols/atomic_swap_1.py
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@@ -1,6 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright (c) 2020-2023 tecnovert
# Copyright (c) 2020-2024 tecnovert
# Distributed under the MIT software license, see the accompanying
# file LICENSE or http://www.opensource.org/licenses/mit-license.php.
@@ -10,12 +10,15 @@ from basicswap.db import (
from basicswap.util import (
SerialiseNum,
)
from basicswap.util.script import (
decodeScriptNum,
)
from basicswap.script import (
OpCodes,
)
from basicswap.basicswap_util import (
SwapTypes,
EventLogTypes,
SwapTypes,
)
from . import ProtocolInterface
@@ -23,13 +26,13 @@ INITIATE_TX_TIMEOUT = 40 * 60 # TODO: make variable per coin
ABS_LOCK_TIME_LEEWAY = 10 * 60
def buildContractScript(lock_val: int, secret_hash: bytes, pkh_redeem: bytes, pkh_refund: bytes, op_lock=OpCodes.OP_CHECKSEQUENCEVERIFY) -> bytearray:
def buildContractScript(lock_val: int, secret_hash: bytes, pkh_redeem: bytes, pkh_refund: bytes, op_lock=OpCodes.OP_CHECKSEQUENCEVERIFY, op_hash=OpCodes.OP_SHA256) -> bytearray:
script = bytearray([
OpCodes.OP_IF,
OpCodes.OP_SIZE,
0x01, 0x20, # 32
OpCodes.OP_EQUALVERIFY,
OpCodes.OP_SHA256,
op_hash,
0x20]) \
+ secret_hash \
+ bytearray([
@@ -54,6 +57,46 @@ def buildContractScript(lock_val: int, secret_hash: bytes, pkh_redeem: bytes, pk
return script
def verifyContractScript(script, op_lock=OpCodes.OP_CHECKSEQUENCEVERIFY, op_hash=OpCodes.OP_SHA256):
if script[0] != OpCodes.OP_IF or \
script[1] != OpCodes.OP_SIZE or \
script[2] != 0x01 or script[3] != 0x20 or \
script[4] != OpCodes.OP_EQUALVERIFY or \
script[5] != op_hash or \
script[6] != 0x20:
return False, None, None, None, None
o = 7
script_hash = script[o: o + 32]
o += 32
if script[o] != OpCodes.OP_EQUALVERIFY or \
script[o + 1] != OpCodes.OP_DUP or \
script[o + 2] != OpCodes.OP_HASH160 or \
script[o + 3] != 0x14:
return False, script_hash, None, None, None
o += 4
pkh_redeem = script[o: o + 20]
o += 20
if script[o] != OpCodes.OP_ELSE:
return False, script_hash, pkh_redeem, None, None
o += 1
lock_val, nb = decodeScriptNum(script, o)
o += nb
if script[o] != op_lock or \
script[o + 1] != OpCodes.OP_DROP or \
script[o + 2] != OpCodes.OP_DUP or \
script[o + 3] != OpCodes.OP_HASH160 or \
script[o + 4] != 0x14:
return False, script_hash, pkh_redeem, lock_val, None
o += 5
pkh_refund = script[o: o + 20]
o += 20
if script[o] != OpCodes.OP_ENDIF or \
script[o + 1] != OpCodes.OP_EQUALVERIFY or \
script[o + 2] != OpCodes.OP_CHECKSIG:
return False, script_hash, pkh_redeem, lock_val, pkh_refund
return True, script_hash, pkh_redeem, lock_val, pkh_refund
def extractScriptSecretHash(script):
return script[7:39]