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Refactored keccak interface

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- Allow calculating keccak hash in steps
- Only allow 32 and 200 byte final hashes
This commit is contained in:
SChernykh
2023-01-08 12:56:26 +01:00
parent 4f34c4466a
commit 632f3faac5
9 changed files with 58 additions and 31 deletions
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19
src/pool_block.cpp
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@@ -310,18 +310,22 @@ bool PoolBlock::get_pow_hash(RandomX_Hasher_Base* hasher, uint64_t height, const
memcpy(blob, mainchain_data.data(), blob_size);
const uint8_t* miner_tx = mainchain_data.data() + header_size;
keccak(miner_tx, static_cast<int>(miner_tx_size) - 1, reinterpret_cast<uint8_t*>(hashes), HASH_SIZE);
hash tmp;
keccak(miner_tx, static_cast<int>(miner_tx_size) - 1, tmp.h);
memcpy(hashes, tmp.h, HASH_SIZE);
count = m_transactions.size();
uint8_t* h = reinterpret_cast<uint8_t*>(m_transactions.data());
keccak(reinterpret_cast<uint8_t*>(hashes), HASH_SIZE * 3, h, HASH_SIZE);
keccak(reinterpret_cast<uint8_t*>(hashes), HASH_SIZE * 3, tmp.h);
memcpy(h, tmp.h, HASH_SIZE);
if (count == 1) {
memcpy(blob + blob_size, h, HASH_SIZE);
}
else if (count == 2) {
keccak(h, HASH_SIZE * 2, blob + blob_size, HASH_SIZE);
keccak(h, HASH_SIZE * 2, tmp.h);
memcpy(blob + blob_size, tmp.h, HASH_SIZE);
}
else {
size_t i, j, cnt;
@@ -334,17 +338,20 @@ bool PoolBlock::get_pow_hash(RandomX_Hasher_Base* hasher, uint64_t height, const
memcpy(tmp_ints.data(), h, (cnt * 2 - count) * HASH_SIZE);
for (i = cnt * 2 - count, j = cnt * 2 - count; j < cnt; i += 2, ++j) {
keccak(h + i * HASH_SIZE, HASH_SIZE * 2, tmp_ints.data() + j * HASH_SIZE, HASH_SIZE);
keccak(h + i * HASH_SIZE, HASH_SIZE * 2, tmp.h);
memcpy(tmp_ints.data() + j * HASH_SIZE, tmp.h, HASH_SIZE);
}
while (cnt > 2) {
cnt >>= 1;
for (i = 0, j = 0; j < cnt; i += 2, ++j) {
keccak(tmp_ints.data() + i * HASH_SIZE, HASH_SIZE * 2, tmp_ints.data() + j * HASH_SIZE, HASH_SIZE);
keccak(tmp_ints.data() + i * HASH_SIZE, HASH_SIZE * 2, tmp.h);
memcpy(tmp_ints.data() + j * HASH_SIZE, tmp.h, HASH_SIZE);
}
}
keccak(tmp_ints.data(), HASH_SIZE * 2, blob + blob_size, HASH_SIZE);
keccak(tmp_ints.data(), HASH_SIZE * 2, tmp.h);
memcpy(blob + blob_size, tmp.h, HASH_SIZE);
}
}
blob_size += HASH_SIZE;