Solidity Patricia Tree
Credits
This is a rewritten version of Christian Reitwießner's patricia-trie to use his patricia tree implementation as a solidity library through npm.
latest released version
in progress
Usage
npm i solidity-patricia-tree pragma solidity ^0.4.25; import {PatriciaTree} from "solidity-patricia-tree/contracts/tree.sol"; contract TestPatriciaTree { using PatriciaTree for PatriciaTree.Tree; PatriciaTree.Tree tree; function test() public { // testInsert(); testProofs(); } function testInsert() internal { tree.insert("one", "ONE"); tree.insert("two", "ONE"); tree.insert("three", "ONE"); tree.insert("four", "ONE"); tree.insert("five", "ONE"); tree.insert("six", "ONE"); tree.insert("seven", "ONE"); // update tree.insert("one", "TWO"); } function testProofs() internal { tree.insert("one", "ONE"); uint branchMask; bytes32[] memory siblings; (branchMask, siblings) = tree.getProof("one"); PatriciaTree.verifyProof(tree.root, "one", "ONE", branchMask, siblings); tree.insert("two", "TWO"); (branchMask, siblings) = tree.getProof("one"); PatriciaTree.verifyProof(tree.root, "one", "ONE", branchMask, siblings); (branchMask, siblings) = tree.getProof("two"); PatriciaTree.verifyProof(tree.root, "two", "TWO", branchMask, siblings); }}Development
Pre-requisites
npm install -g trufflenpm install -g ganachenpm installTests
Test cases include the information about how the functions work, but also includes a demo scenario. Running and reading the test cases will help you understand how it works.
npm run testContributors
- Original author: Christian Reitwießner
- Wanseob Lim<email@wanseob.com>