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This commit is contained in:
Scott Sadler
2018-05-09 16:17:28 -03:00
parent 3c7604133e
commit 20c3ac51c2
28 changed files with 884 additions and 228 deletions
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30
src/primitives/block.cpp
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@@ -15,7 +15,9 @@ uint256 CBlockHeader::GetHash() const
return SerializeHash(*this);
}
uint256 CBlock::BuildMerkleTree(bool* fMutated) const
uint256 BuildMerkleTree(bool* fMutated, const std::vector<uint256> leaves,
std::vector<uint256> &vMerkleTree)
{
/* WARNING! If you're reading this because you're learning about crypto
and/or designing a new system that will use merkle trees, keep in mind
@@ -28,10 +30,10 @@ uint256 CBlock::BuildMerkleTree(bool* fMutated) const
transactions leading to the same merkle root. For example, these two
trees:
A A
/ \ / \
B C B C
/ \ | / \ / \
A A
/ \ / \
B C B C
/ \ \ / \ / \
D E F D E F F
/ \ / \ / \ / \ / \ / \ / \
1 2 3 4 5 6 1 2 3 4 5 6 5 6
@@ -52,13 +54,14 @@ uint256 CBlock::BuildMerkleTree(bool* fMutated) const
known ways of changing the transactions without affecting the merkle
root.
*/
vMerkleTree.clear();
vMerkleTree.reserve(vtx.size() * 2 + 16); // Safe upper bound for the number of total nodes.
for (std::vector<CTransaction>::const_iterator it(vtx.begin()); it != vtx.end(); ++it)
vMerkleTree.push_back(it->GetHash());
vMerkleTree.reserve(leaves.size() * 2 + 16); // Safe upper bound for the number of total nodes.
for (std::vector<uint256>::const_iterator it(leaves.begin()); it != leaves.end(); ++it)
vMerkleTree.push_back(*it);
int j = 0;
bool mutated = false;
for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
for (int nSize = leaves.size(); nSize > 1; nSize = (nSize + 1) / 2)
{
for (int i = 0; i < nSize; i += 2)
{
@@ -78,6 +81,15 @@ uint256 CBlock::BuildMerkleTree(bool* fMutated) const
return (vMerkleTree.empty() ? uint256() : vMerkleTree.back());
}
uint256 CBlock::BuildMerkleTree(bool* fMutated) const
{
std::vector<uint256> leaves;
for (int i=0; i<vtx.size(); i++) leaves.push_back(vtx[i].GetHash());
return ::BuildMerkleTree(fMutated, leaves, vMerkleTree);
}
std::vector<uint256> CBlock::GetMerkleBranch(int nIndex) const
{
if (vMerkleTree.empty())