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Merge pull request 'Reject ztxs with duplicate zkproofs' (#327) from duplicate_proofs into dev

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Reviewed-on: https://git.hush.is/hush/hush3/pulls/327
This commit is contained in:
duke
2023-10-13 11:58:00 +00:00
parent 70fa319fd9 14d3ae1785
commit fb5563d06a
2 changed files with 27 additions and 1 deletions
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2
src/consensus/validation.h
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@@ -29,6 +29,8 @@ static const unsigned char REJECT_MALFORMED = 0x01;
static const unsigned char REJECT_INVALID = 0x10;
static const unsigned char REJECT_OBSOLETE = 0x11;
static const unsigned char REJECT_DUPLICATE = 0x12;
static const unsigned char REJECT_DUPLICATE_OUTPUT_PROOF = 0x13;
static const unsigned char REJECT_DUPLICATE_SPEND_PROOF = 0x14;
static const unsigned char REJECT_NONSTANDARD = 0x40;
static const unsigned char REJECT_DUST = 0x41;
static const unsigned char REJECT_INSUFFICIENTFEE = 0x42;

26
src/main.cpp
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@@ -1751,7 +1751,31 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa
{
return error("AcceptToMemoryPool: CheckTransaction failed");
}
// Reject duplicate output proofs in a single ztx in mempool
// Migrate this to CheckTransaction() to make it a consensus requirement
{
set<libzcash::GrothProof> vSaplingOutputProof;
BOOST_FOREACH(const OutputDescription& output, tx.vShieldedOutput)
{
if (vSaplingOutputProof.count(output.zkproof))
return state.Invalid(error("AcceptToMemoryPool: duplicate output proof"),REJECT_DUPLICATE_OUTPUT_PROOF, "bad-txns-duplicate-output-proof");
vSaplingOutputProof.insert(output.zkproof);
}
}
// Reject duplicate spend proofs in a single ztx in mempool
// Migrate this to CheckTransaction() to make it a consensus requirement
{
set<libzcash::GrothProof> vSaplingSpendProof;
BOOST_FOREACH(const SpendDescription& spend, tx.vShieldedSpend)
{
if (vSaplingSpendProof.count(spend.zkproof))
return state.Invalid(error("AcceptToMemoryPool: duplicate spend proof"),REJECT_DUPLICATE_SPEND_PROOF, "bad-txns-duplicate-spend-proof");
vSaplingSpendProof.insert(spend.zkproof);
}
}
// DoS level set to 10 to be more forgiving.
// Check transaction contextually against the set of consensus rules which apply in the next block to be mined.
if (!ContextualCheckTransaction(0,0,0,tx, state, nextBlockHeight, (dosLevel == -1) ? 10 : dosLevel))