mirrors/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-02-20 14:05:23 +01:00
Code Issues Projects Releases Wiki Activity

tests: abstract out precomputed BIP341 signature hash elements

Browse source
This commit is contained in:
Pieter Wuille 2021-10-27 15:07:35 -04:00
parent a5bde018b4
commit c98c53f20c
1 changed files with 20 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
test/functional/test_framework/script.py
View file

@ -755,6 +755,21 @@ class TestFrameworkScript(unittest.TestCase):
for value in values:
self.assertEqual(CScriptNum.decode(CScriptNum.encode(CScriptNum(value))), value)
def BIP341_sha_prevouts(txTo):
return sha256(b"".join(i.prevout.serialize() for i in txTo.vin))
def BIP341_sha_amounts(spent_utxos):
return sha256(b"".join(struct.pack("<q", u.nValue) for u in spent_utxos))
def BIP341_sha_scriptpubkeys(spent_utxos):
return sha256(b"".join(ser_string(u.scriptPubKey) for u in spent_utxos))
def BIP341_sha_sequences(txTo):
return sha256(b"".join(struct.pack("<I", i.nSequence) for i in txTo.vin))
def BIP341_sha_outputs(txTo):
return sha256(b"".join(o.serialize() for o in txTo.vout))
def TaprootSignatureMsg(txTo, spent_utxos, hash_type, input_index = 0, scriptpath = False, script = CScript(), codeseparator_pos = -1, annex = None, leaf_ver = LEAF_VERSION_TAPSCRIPT):
assert (len(txTo.vin) == len(spent_utxos))
assert (input_index < len(txTo.vin))
@ -765,12 +780,12 @@ def TaprootSignatureMsg(txTo, spent_utxos, hash_type, input_index = 0, scriptpat
ss += struct.pack("<i", txTo.nVersion)
ss += struct.pack("<I", txTo.nLockTime)
if in_type != SIGHASH_ANYONECANPAY:
ss += sha256(b"".join(i.prevout.serialize() for i in txTo.vin))
ss += sha256(b"".join(struct.pack("<q", u.nValue) for u in spent_utxos))
ss += sha256(b"".join(ser_string(u.scriptPubKey) for u in spent_utxos))
ss += sha256(b"".join(struct.pack("<I", i.nSequence) for i in txTo.vin))
ss += BIP341_sha_prevouts(txTo)
ss += BIP341_sha_amounts(spent_utxos)
ss += BIP341_sha_scriptpubkeys(spent_utxos)
ss += BIP341_sha_sequences(txTo)
if out_type == SIGHASH_ALL:
ss += sha256(b"".join(o.serialize() for o in txTo.vout))
ss += BIP341_sha_outputs(txTo)
spend_type = 0
if annex is not None:
spend_type |= 1