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core/sign_tx: Remove last_output_bytes in Decred, which is no longer needed.

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This commit is contained in:
Andrew Kozlik 2020-04-09 22:34:55 +02:00 committed by Andrew Kozlik
parent f1801764a1
commit 555259d6a9
2 changed files with 4 additions and 16 deletions
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18
core/src/apps/wallet/sign_tx/decred.py
View File

@ -64,10 +64,6 @@ class Decred(Bitcoin):
ensure(coin.decred)
super().initialize(tx, keychain, coin)
# This is required because the last serialized output obtained in
# step 2 will only be sent to the client in step 4
self.last_output_bytes = None # type: bytearray
def init_hash143(self) -> None:
self.hash143 = DecredPrefixHasher(self.tx) # pseudo BIP-0143 prefix hashing
@ -115,13 +111,9 @@ class Decred(Bitcoin):
self.tx_ser.serialized_tx = w_txo_bin
self.tx_req.serialized = self.tx_ser
self.last_output_bytes = w_txo_bin
await super().confirm_output(i, txo, txo_bin)
async def step4_serialize_inputs(self) -> None:
self.tx_req.serialized = None
prefix_hash = self.hash143.get_prefix_hash()
for i_sign in range(self.tx.inputs_count):
@ -176,17 +168,15 @@ class Decred(Bitcoin):
txi_sign.script_sig = self.input_derive_script(
txi_sign, key_sign_pub, signature
)
w_txi_sign = writers.empty_bytearray(
8 + 4 + len(self.last_output_bytes)
if i_sign == 0
else 0 + 16 + 4 + len(txi_sign.script_sig)
)
max_witness_size = 8 + 4 + 4 + 4 + len(txi_sign.script_sig)
if i_sign == 0:
writers.write_bytes_unchecked(w_txi_sign, self.last_output_bytes)
w_txi_sign = writers.empty_bytearray(4 + 4 + 4 + max_witness_size)
writers.write_uint32(w_txi_sign, self.tx.lock_time)
writers.write_uint32(w_txi_sign, self.tx.expiry)
writers.write_varint(w_txi_sign, self.tx.inputs_count)
else:
w_txi_sign = writers.empty_bytearray(max_witness_size)
writers.write_tx_input_decred_witness(w_txi_sign, txi_sign)

2
core/src/apps/wallet/sign_tx/signing.py
View File

@ -160,8 +160,6 @@ class Bitcoin:
raise SigningError(FailureType.ActionCancelled, "Total cancelled")
async def step4_serialize_inputs(self) -> None:
self.tx_req.serialized = None
for i in range(self.tx.inputs_count):
progress.advance()
if self.segwit[i]: