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fix: refuse to create new clsig if we switched to a different fork while we were signing #6502

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fix: refuse to create new clsig if we switched to a different fork while we were signing #6502

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6 changes: 5 additions & 1 deletion src/llmq/chainlocks.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -519,7 +519,11 @@ MessageProcessingResult CChainLocksHandler::HandleNewRecoveredSig(const llmq::CR
// already got the same or a better CLSIG through the CLSIG message
return {};
}

const auto pindex = m_chainstate.m_chain.Tip()->GetAncestor(lastSignedHeight);
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if we will have a new chainlock we need to switch chain here to the new one, because it is a new chain-locked tip and current tip should be refused, isn't it true?

if (pindex == nullptr || pindex->GetBlockHash() != lastSignedMsgHash) {
// we switched to a different fork while we were signing
return {};
}

clsig = CChainLockSig(lastSignedHeight, lastSignedMsgHash, recoveredSig.sig.Get());
}
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