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tx,bugfix: correct signature length estimate 

71-bytes for a signature already includes the sighash byte.

 2-bytes	30 44 (DER- prefix thing)
34-bytes	02 20 6e29c8df67fffdda1613cef1413eb1a9ef3627f1fc5e4d910837274eafcc7b2a (r)
34-bytes	02 20 4b8563d79b92fdd830a546862439f80b24132d09318af2c7220c791067067e29 (s)
 1-byte		01 (sighash)
==
71-bytes
travis-experimental
niftynei 4 years ago
committed by Rusty Russell
parent
f8c4cc73ae
commit
26bc4f5239
4 changed files with 29 additions and 29 deletions
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  1. 4
      bitcoin/tx.c
  2. 34
      tests/test_misc.py
  3. 18
      tests/test_plugin.py
  4. 2
      tests/test_wallet.py

4
bitcoin/tx.c
View File

@ -835,10 +835,10 @@ size_t bitcoin_tx_output_weight(size_t outscript_len)
return weight;
}
/* We grind signatures to get them down to 71 bytes (+1 for sighash flags) */
/* We grind signatures to get them down to 71 bytes */
size_t bitcoin_tx_input_sig_weight(void)
{
return 1 + 71 + 1;
return 1 + 71;
}
/* We only do segwit inputs, and we assume witness is sig + key */

34
tests/test_misc.py
View File

@ -660,46 +660,46 @@ def test_withdraw_misc(node_factory, bitcoind, chainparams):
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 2000000000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993745000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993760000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 6255000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993745000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 6240000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993760000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 2000000000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993745000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993760000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 6255000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993745000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 6240000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993760000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 2000000000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993745000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993760000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 6255000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993745000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 6240000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993760000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993385000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1993400000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 2000000000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 6615000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993385000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 6600000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 1993400000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 11961135000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 13485000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 11961135000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 11961240000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 13440000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 11961240000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 11957490000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 3645000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 11957603000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 3637000, 'tag': 'chain_fees'},
]
check_coin_moves(l1, 'wallet', wallet_moves, chainparams)

18
tests/test_plugin.py
View File

@ -1606,11 +1606,11 @@ def test_coin_movement_notices(node_factory, bitcoind, chainparams):
{'type': 'chain_mvt', 'credit': 2000000000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 991900000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 991908000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1000000000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 8100000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 991900000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 8092000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 991908000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 100001000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 945523000, 'debit': 0, 'tag': 'deposit'},
]
@ -1629,11 +1629,11 @@ def test_coin_movement_notices(node_factory, bitcoind, chainparams):
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
# Could go in either order
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 995425000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 995433000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1000000000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 4575000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 995425000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 4567000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 995433000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 100001000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 945785000, 'debit': 0, 'tag': 'deposit'},
]
@ -1651,11 +1651,11 @@ def test_coin_movement_notices(node_factory, bitcoind, chainparams):
{'type': 'chain_mvt', 'credit': 0, 'debit': 0, 'tag': 'spend_track'},
# Could go in either order
[
{'type': 'chain_mvt', 'credit': 0, 'debit': 995425000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 995433000, 'tag': 'withdrawal'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 1000000000, 'tag': 'withdrawal'},
],
{'type': 'chain_mvt', 'credit': 0, 'debit': 4575000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 995425000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 0, 'debit': 4567000, 'tag': 'chain_fees'},
{'type': 'chain_mvt', 'credit': 995433000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 100001000, 'debit': 0, 'tag': 'deposit'},
{'type': 'chain_mvt', 'credit': 947285000, 'debit': 0, 'tag': 'deposit'},
]

2
tests/test_wallet.py
View File

@ -578,7 +578,7 @@ def test_utxopsbt(node_factory, bitcoind, chainparams):
assert psbt2['tx']['vin'] == psbt['tx']['vin']
if chainparams['elements']:
# elements includes the fee as an output
addl_fee = Millisatoshi(fee_val * start_weight // 1000 * 1000)
addl_fee = Millisatoshi((fee_val * start_weight + 999) // 1000 * 1000)
assert psbt2['tx']['vout'][0]['value'] == psbt['tx']['vout'][0]['value'] + addl_fee.to_btc()
else:
assert psbt2['tx']['vout'] == psbt['tx']['vout']

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