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BlockTemplate: miner tx and root hash updating

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This commit is contained in:
SChernykh 2021-06-16 23:44:05 +02:00
parent 93e689d601
commit 88959bd703
2 changed files with 54 additions and 19 deletions
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67
src/base/tools/cryptonote/BlockTemplate.cpp
View file

@ -113,8 +113,9 @@ bool BlockTemplate::Init(const String& blockTemplate, Coin coin)
// Other transaction hashes
ar(num_hashes);
# ifdef XMRIG_PROXY_PROJECT
hashes.resize((num_hashes + 1) * HASH_SIZE);
//CalculateMinerTxHash(hashes.data());
CalculateMinerTxHash(hashes.data());
for (uint64_t i = 1; i <= num_hashes; ++i) {
uint8_t h[HASH_SIZE];
@ -122,8 +123,9 @@ bool BlockTemplate::Init(const String& blockTemplate, Coin coin)
memcpy(hashes.data() + i * HASH_SIZE, h, HASH_SIZE);
}
//CalculateMerkleTreeHash(hashes.data(), num_hashes + 1, root_hash);
//CalculateHashingBlob();
CalculateMerkleTreeHash();
GenerateHashingBlob();
# endif
return true;
}
@ -136,7 +138,7 @@ void BlockTemplate::CalculateMinerTxHash(uint8_t* hash)
// Calculate 3 partial hashes
// 1. Prefix
keccak(raw_blob.data() + miner_tx_prefix_begin_index, miner_tx_prefix_end_index - miner_tx_prefix_begin_index, hashes, HASH_SIZE);
keccak(raw_blob.data() + miner_tx_prefix_begin_index, static_cast<int>(miner_tx_prefix_end_index - miner_tx_prefix_begin_index), hashes, HASH_SIZE);
// 2. Base RCT, single 0 byte in miner tx
static const uint8_t known_second_hash[HASH_SIZE] = {
@ -152,41 +154,72 @@ void BlockTemplate::CalculateMinerTxHash(uint8_t* hash)
}
void BlockTemplate::CalculateMerkleTreeHash(const uint8_t* hashes, size_t count, uint8_t* root_hash)
void BlockTemplate::CalculateMerkleTreeHash()
{
if (count == 1) {
memcpy(root_hash, hashes, HASH_SIZE);
miner_tx_merkle_tree_branch.clear();
uint8_t* h = hashes.data();
if (num_hashes == 1) {
memcpy(root_hash, h, HASH_SIZE);
}
else if (count == 2) {
keccak(hashes, HASH_SIZE * 2, root_hash, HASH_SIZE);
else if (num_hashes == 2) {
miner_tx_merkle_tree_branch.insert(miner_tx_merkle_tree_branch.end(), h + HASH_SIZE, h + HASH_SIZE * 2);
keccak(h, HASH_SIZE * 2, root_hash, HASH_SIZE);
}
else {
size_t i, j;
size_t i, j, cnt;
size_t cnt = count;
while (cnt & (cnt - 1)) cnt &= cnt - 1;
for (i = 0, cnt = 1; cnt <= num_hashes; ++i, cnt <<= 1) {}
cnt >>= 1;
miner_tx_merkle_tree_branch.reserve(HASH_SIZE * (i - 1));
Buffer ints(cnt * HASH_SIZE);
memcpy(ints.data(), hashes, (cnt * 2 - count) * HASH_SIZE);
memcpy(ints.data(), h, (cnt * 2 - num_hashes) * HASH_SIZE);
for (i = cnt * 2 - count, j = cnt * 2 - count; j < cnt; i += 2, ++j) {
keccak(hashes + i * HASH_SIZE, HASH_SIZE * 2, ints.data() + j * HASH_SIZE, HASH_SIZE);
for (i = cnt * 2 - num_hashes, j = cnt * 2 - num_hashes; j < cnt; i += 2, ++j) {
if (i == 0) {
miner_tx_merkle_tree_branch.insert(miner_tx_merkle_tree_branch.end(), h + HASH_SIZE, h + HASH_SIZE * 2);
}
keccak(h + i * HASH_SIZE, HASH_SIZE * 2, ints.data() + j * HASH_SIZE, HASH_SIZE);
}
while (cnt > 2) {
cnt >>= 1;
for (i = 0, j = 0; j < cnt; i += 2, ++j) {
if (i == 0) {
miner_tx_merkle_tree_branch.insert(miner_tx_merkle_tree_branch.end(), ints.data() + HASH_SIZE, ints.data() + HASH_SIZE * 2);
}
keccak(ints.data() + i * HASH_SIZE, HASH_SIZE * 2, ints.data() + j * HASH_SIZE, HASH_SIZE);
}
}
miner_tx_merkle_tree_branch.insert(miner_tx_merkle_tree_branch.end(), ints.data() + HASH_SIZE, ints.data() + HASH_SIZE * 2);
keccak(ints.data(), HASH_SIZE * 2, root_hash, HASH_SIZE);
}
}
void BlockTemplate::CalculateHashingBlob()
void BlockTemplate::UpdateMinerTxHash()
{
CalculateMinerTxHash(hashes.data());
memcpy(root_hash, hashes.data(), HASH_SIZE);
for (size_t i = 0; i < miner_tx_merkle_tree_branch.size(); i += HASH_SIZE) {
uint8_t h[HASH_SIZE * 2];
memcpy(h, root_hash, HASH_SIZE);
memcpy(h + HASH_SIZE, miner_tx_merkle_tree_branch.data() + i, HASH_SIZE);
keccak(h, HASH_SIZE * 2, root_hash, HASH_SIZE);
}
}
void BlockTemplate::GenerateHashingBlob()
{
hashingBlob.clear();
hashingBlob.reserve(miner_tx_prefix_begin_index + HASH_SIZE + 3);

6
src/base/tools/cryptonote/BlockTemplate.h
View file

@ -73,6 +73,7 @@ struct BlockTemplate
uint64_t num_hashes;
Buffer hashes;
Buffer miner_tx_merkle_tree_branch;
uint8_t root_hash[HASH_SIZE];
Buffer hashingBlob;
@ -81,8 +82,9 @@ struct BlockTemplate
private:
void CalculateMinerTxHash(uint8_t* hash);
static void CalculateMerkleTreeHash(const uint8_t* hashes, size_t count, uint8_t* root_hash);
void CalculateHashingBlob();
void CalculateMerkleTreeHash();
void UpdateMinerTxHash();
void GenerateHashingBlob();
};