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Code Issues Releases Wiki Activity

core, legacy: make sure OPRETURN ouput is not marked as change

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This commit is contained in:
Tomas Susanka 2020-03-06 17:26:19 +00:00
parent a513f7429b
commit 0903159d9b
2 changed files with 14 additions and 0 deletions
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7
core/src/apps/wallet/sign_tx/signing.py
View File

@ -790,6 +790,13 @@ def output_is_change(
segwit_in: int,
multifp: multisig.MultisigFingerprint,
) -> bool:
if o.script_type not in (
OutputScriptType.PAYTOADDRESS,
OutputScriptType.PAYTOMULTISIG,
OutputScriptType.PAYTOWITNESS,
OutputScriptType.PAYTOP2SHWITNESS,
):
return False
if o.multisig and not multifp.matches(o.multisig):
return False
if output_is_segwit(o) and o.amount > segwit_in:

7
legacy/firmware/signing.c
View File

@ -696,6 +696,13 @@ static bool signing_check_output(TxOutputType *txoutput) {
}
}
if ((txoutput->script_type != OutputScriptType_PAYTOADDRESS) &&
(txoutput->script_type != OutputScriptType_PAYTOMULTISIG) &&
(txoutput->script_type != OutputScriptType_PAYTOWITNESS) &&
(txoutput->script_type != OutputScriptType_PAYTOP2SHWITNESS)) {
is_change = false;
}
if (is_change) {
if (change_spend == 0) { // not set
change_spend = txoutput->amount;