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Use next set in proof creation if coin is in overlapping part of sets #1199

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merged 2 commits into from
Sep 19, 2022
Merged

Use next set in proof creation if coin is in overlapping part of sets #1199

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b717143
Use next set in proof creation if coin is in overlapping part of sets
levonpetrosyan93 Jul 31, 2022
22cacc0
Failing build fixed
levonpetrosyan93 Sep 9, 2022
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11 changes: 9 additions & 2 deletions src/wallet/lelantusjoinsplitbuilder.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -459,13 +459,20 @@ void LelantusJoinSplitBuilder::CreateJoinSplit(

// get coin group
int groupId;

std::tie(std::ignore, groupId) = state->GetMintedCoinHeightAndId(pub);
int mintHeight;
std::tie(mintHeight, groupId) = state->GetMintedCoinHeightAndId(pub);

if (groupId < 0) {
throw std::runtime_error(_("One of the lelantus coins has not been found in the chain!"));
}

// Check if the coin is at overlapping parts of sets, use next set for proof creation if it is also in next set.
lelantus::CLelantusState::LelantusCoinGroupInfo nextCoinGroupInfo;
if (state->GetLatestCoinID() > groupId && state->GetCoinGroupInfo(groupId + 1, nextCoinGroupInfo)) {
if (nextCoinGroupInfo.firstBlock->nHeight <= mintHeight)
groupId += 1;
}

coins.emplace_back(std::make_pair(priv, groupId));
std::vector<unsigned char> setHash;
if (anonymity_sets.count(groupId) == 0) {
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