Package Exports

urkel

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (urkel) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Urkel Tree

An optimized and cryptographically provable database.

Usage

const crypto = require('bcrypto');
const {Tree} = require('urkel');
const {SHA256, randomBytes} = crypto;

const tree = new Tree(SHA256, 160, '/path/to/my/db');

await tree.open();

let last;

for (let i = 0; i < 500; i++) {
  const key = randomBytes(20);
  const value = randomBytes(300);
  await tree.insert(key, value);
  last = key;
}

await tree.commit();

const root = tree.rootHash();
const proof = await tree.prove(root, last);
const [code, value] = tree.verify(root, last, proof);

if (code === 0 && value)
  console.log('Valid proof for: %s', value.toString('hex'));

await tree.values((key, value) => {
  console.log('Iterated over item:');
  console.log([key.toString('hex'), value.toString('hex')]);
});

await tree.close();

Contribution and License Agreement

If you contribute code to this project, you are implicitly allowing your code to be distributed under the MIT license. You are also implicitly verifying that all code is your original work. </legalese>

License

See LICENSE for more info.