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estimate witness stack size for multiple inputs

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tecnovert
2026-01-31 13:17:23 +02:00
parent a04ce28ca2
commit ab1f6ea5b6
4 changed files with 50 additions and 15 deletions
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basicswap/interface/part.py
+12 -5
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@@ -2,7 +2,7 @@
# -*- coding: utf-8 -*-
# Copyright (c) 2020-2024 tecnovert
# Copyright (c) 2024-2025 The Basicswap developers
# Copyright (c) 2024-2026 The Basicswap developers
# Distributed under the MIT software license, see the accompanying
# file LICENSE or http://www.opensource.org/licenses/mit-license.php.
@@ -137,7 +137,7 @@ class PARTInterface(BTCInterface):
def getScriptDummyWitness(self, script: bytes) -> List[bytes]:
if self.isScriptP2WPKH(script) or self.isScriptP2PKH(script):
return [bytes(72), bytes(33)]
return self.getP2WPKHDummyWitness()
raise ValueError("Unknown script type")
def formatStealthAddress(self, scan_pubkey, spend_pubkey) -> str:
@@ -146,9 +146,16 @@ class PARTInterface(BTCInterface):
return encodeStealthAddress(prefix_byte, scan_pubkey, spend_pubkey)
def getWitnessStackSerialisedLength(self, witness_stack) -> int:
length: int = getCompactSizeLen(len(witness_stack))
for e in witness_stack:
length += getWitnessElementLen(len(e))
length: int = 0
if len(witness_stack) > 0 and isinstance(witness_stack[0], list):
for input_stack in witness_stack:
length += getCompactSizeLen(len(input_stack))
for e in input_stack:
length += getWitnessElementLen(len(e))
else:
length += getCompactSizeLen(len(witness_stack))
for e in witness_stack:
length += getWitnessElementLen(len(e))
return length
def getWalletRestoreHeight(self) -> int: