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Track the correct change witness across chained joinsplits

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This commit is contained in:
Simon
2016-11-07 10:29:28 -08:00
parent 9ddb6ad028
commit de38bfbbed
1 changed files with 15 additions and 9 deletions
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24
src/wallet/asyncrpcoperation_sendmany.cpp
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@@ -500,15 +500,23 @@ bool AsyncRPCOperation_sendmany::main_impl() {
throw JSONRPCError(RPC_WALLET_ERROR, "Could not find previous JoinSplit anchor");
}
assert(changeOutputIndex != -1);
boost::optional<ZCIncrementalWitness> changeWitness;
int n = 0;
for (const uint256& commitment : prevJoinSplit.commitments) {
tree.append(commitment);
previousCommitments.push_back(commitment);
previousCommitments.push_back(commitment);
if (!changeWitness && changeOutputIndex == n++) {
changeWitness = tree.witness();
} else if (changeWitness) {
changeWitness.get().append(commitment);
}
}
ZCIncrementalWitness changeWitness = tree.witness();
jsAnchor = changeWitness.root();
uint256 changeCommitment = prevJoinSplit.commitments[changeOutputIndex];
intermediates.insert(std::make_pair(tree.root(), tree));
witnesses.push_back(changeWitness);
if (changeWitness) {
witnesses.push_back(changeWitness);
}
jsAnchor = tree.root();
intermediates.insert(std::make_pair(tree.root(), tree)); // chained js are interstitial (found in between block boundaries)
// Decrypt the change note's ciphertext to retrieve some data we need
ZCNoteDecryption decryptor(spendingkey_.viewing_key());
@@ -891,9 +899,7 @@ Object AsyncRPCOperation_sendmany::perform_joinsplit(
outputMap,
info.vpub_old,
info.vpub_new,
!this->testmode,
// Temporary fix for #1779 is to disable shuffling of inputs and outputs.
GenIdentity);
!this->testmode);
if (!(jsdesc.Verify(*pzcashParams, joinSplitPubKey_))) {
throw std::runtime_error("error verifying joinsplit");