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Cache Input/Output ScriptPubkeys sha256

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This commit is contained in:
sanket1729 2021-08-17 20:38:16 +00:00
parent 61b5152d44
commit 97b53e0b89
2 changed files with 36 additions and 1 deletions
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31
src/script/interpreter.cpp
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@ -1941,6 +1941,35 @@ uint256 GetSpentScriptsSHA256(const std::vector<CTxOut>& outputs_spent)
return ss.GetSHA256();
}
/** Compute the vector where each element is SHA256 of scriptPubKeys spent by a tx. */
std::vector<uint256> GetSpentScriptPubKeysSHA256(const std::vector<CTxOut>& outputs_spent)
{
std::vector<uint256> spent_spk_single_hashes;
spent_spk_single_hashes.reserve(outputs_spent.size());
for (const auto& txout : outputs_spent) {
// Normal serialization using the << operater would also serialize the length, therefore we directly write using CSHA256
uint256 spent_spk_single_hash;
CSHA256().Write(txout.scriptPubKey.data(), txout.scriptPubKey.size()).Finalize(spent_spk_single_hash.data());
spent_spk_single_hashes.push_back(std::move(spent_spk_single_hash));
}
return spent_spk_single_hashes;
}
/** Compute the vector where each element is SHA256 of output scriptPubKey of a tx. */
template <class T>
std::vector<uint256> GetOutputScriptPubKeysSHA256(const T& txTo)
{
std::vector<uint256> out_spk_single_hashes;
out_spk_single_hashes.reserve(txTo.vout.size());
for (const auto& txout : txTo.vout) {
// Normal serialization using the << operater would also serialize the length, therefore we directly write using CSHA256
uint256 out_spk_single_hash;
CSHA256().Write(txout.scriptPubKey.data(), txout.scriptPubKey.size()).Finalize(out_spk_single_hash.data());
out_spk_single_hashes.push_back(std::move(out_spk_single_hash));
}
return out_spk_single_hashes;
}
template <class T>
uint256 GetRangeproofsHash(const T& txTo) {
CHashWriter ss(SER_GETHASH, 0);
@ -2012,6 +2041,8 @@ void PrecomputedTransactionData::Init(const T& txTo, std::vector<CTxOut>&& spent
m_issuance_rangeproofs_single_hash = GetIssuanceRangeproofsSHA256(txTo);
m_output_witnesses_single_hash = GetOutputWitnessesSHA256(txTo);
m_spent_scripts_single_hash = GetSpentScriptsSHA256(m_spent_outputs);
m_spent_output_spk_single_hashes = GetSpentScriptPubKeysSHA256(m_spent_outputs);
m_output_spk_single_hashes = GetOutputScriptPubKeysSHA256(txTo);
m_bip341_taproot_ready = true;
}
}