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Fix indentation in MerkleProof.sol and remove mock contract

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This commit is contained in:
Yondon Fu
2017-06-15 11:10:37 -04:00
parent 2e0bd06da2
commit 30e202313d
2 changed files with 26 additions and 38 deletions
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52
contracts/MerkleProof.sol
View File

@ -6,33 +6,33 @@ pragma solidity ^0.4.11;
* @note Based on https://github.com/ameensol/merkle-tree-solidity/blob/master/src/MerkleProof.sol
*/
library MerkleProof {
/*
* @dev Verifies a Merkle proof proving the existence of a leaf in a Merkle tree. Assumes that each pair of leaves
* and each pair of pre-images is sorted.
* @param _proof Merkle proof containing sibling hashes on the branch from the leaf to the root of the Merkle tree
* @param _root Merkle root
* @param _leaf Leaf of Merkle tree
*/
function verifyProof(bytes _proof, bytes32 _root, bytes32 _leaf) constant returns (bool) {
bytes32 proofElement;
bytes32 computedHash = _leaf;
/*
* @dev Verifies a Merkle proof proving the existence of a leaf in a Merkle tree. Assumes that each pair of leaves
* and each pair of pre-images is sorted.
* @param _proof Merkle proof containing sibling hashes on the branch from the leaf to the root of the Merkle tree
* @param _root Merkle root
* @param _leaf Leaf of Merkle tree
*/
function verifyProof(bytes _proof, bytes32 _root, bytes32 _leaf) constant returns (bool) {
bytes32 proofElement;
bytes32 computedHash = _leaf;
for (uint256 i = 32; i <= _proof.length; i += 32) {
assembly {
// Load the current element of the proof
proofElement := mload(add(_proof, i))
}
for (uint256 i = 32; i <= _proof.length; i += 32) {
assembly {
// Load the current element of the proof
proofElement := mload(add(_proof, i))
}
if (computedHash < proofElement) {
// Hash(current computed hash + current element of the proof)
computedHash = sha3(computedHash, proofElement);
} else {
// Hash(current element of the proof + current computed hash)
computedHash = sha3(proofElement, computedHash);
}
}
// Check if the computed hash (root) is equal to the provided root
return computedHash == _root;
if (computedHash < proofElement) {
// Hash(current computed hash + current element of the proof)
computedHash = sha3(computedHash, proofElement);
} else {
// Hash(current element of the proof + current computed hash)
computedHash = sha3(proofElement, computedHash);
}
}
// Check if the computed hash (root) is equal to the provided root
return computedHash == _root;
}
}

12
test/helpers/MerkleProofMock.sol
View File

@ -1,12 +0,0 @@
pragma solidity ^0.4.11;
import '../../contracts/MerkleProof.sol';
contract MerkleProofMock {
bool public result;
function verifyProof(bytes _proof, bytes32 _root, bytes32 _leaf) {
result = MerkleProof.verifyProof(_proof, _root, _leaf);
}
}