maxholman / rlp

An RLP encoding library for Dart. https://pub.dartlang.org/packages/rlp

rlp

An Ethereum RLP library for Dart - https://pub.dartlang.org/packages/rlp

The purpose of RLP (Recursive Length Prefix) is to encode arbitrarily nested arrays of binary data, and RLP is the main encoding method used to serialize objects in Ethereum

rlp takes a String, int or List and returns an RLP encoded Uint8List

Usage

A simple usage example:

import 'package:rlp/rlp.dart';

main() {
  var encoded = Rlp.encode(["dog", "cat"]);
  print(encoded); // Uint8List [200, 131, 100, 111, 103, 131, 99, 97, 116]
}

A more complex usage example:

import 'package:convert/convert.dart';
import 'package:pointycastle/digests/keccak.dart';
import 'package:rlp/rlp.dart';

main() {

  var sender = Address('0xba52c75764d6f594735dc735be7f1830cdf58ddf');
  var nonce = 3515;

  var encoded = Rlp.encode([sender, nonce]);

  var out = KeccakDigest(256).process(encoded);
  var contractAddress = hex.encode(out.sublist(12));

  print('Cryptokitties contract address is 0x$contractAddress'); // 0x06012c8cf97bead5deae237070f9587f8e7a266d

}

Features and bugs

Please file feature requests and bugs at the issue tracker.