rlp
Advanced tools
Package description
The 'rlp' npm package is used for encoding and decoding data using the Recursive Length Prefix (RLP) encoding scheme, which is commonly used in Ethereum and other blockchain technologies. RLP is a method to encode arbitrarily nested arrays of binary data, and it is particularly useful for serializing data structures in a compact and efficient manner.
Encoding Data
This feature allows you to encode an array of data into RLP format. In this example, the array ['cat', 'dog'] is encoded into its RLP representation.
const rlp = require('rlp');
const encoded = rlp.encode(['cat', 'dog']);
console.log(encoded);Decoding Data
This feature allows you to decode RLP-encoded data back into its original form. In this example, the RLP-encoded buffer is decoded back into the array ['cat', 'dog'].
const rlp = require('rlp');
const encoded = Buffer.from('c88363617483646f67', 'hex');
const decoded = rlp.decode(encoded);
console.log(decoded);The 'ethereumjs-util' package provides a variety of utility functions for Ethereum, including RLP encoding and decoding. It offers a broader range of functionalities compared to 'rlp', such as cryptographic functions, keccak hashing, and more. It is more comprehensive for Ethereum-specific tasks.
The 'rlp-stream' package is designed for streaming RLP encoding and decoding. It is useful for handling large datasets or continuous streams of data that need to be processed in chunks. This package is more specialized for streaming use cases compared to 'rlp'.
Readme
or #ethereumjs on freenode
Recursive Length Prefix Encoding for node.js.
npm install rlp
install with -g if you want to use the cli.
var RLP = require('rlp');
var assert = require('assert');
var nestedList = [ [], [[]], [ [], [[]] ] ];
var encoded = RLP.encode(nestedList);
var decoded = RLP.decode(encoded);
assert.deepEqual(nestedList, decoded);
rlp.encode(plain) - RLP encodes an Array, Buffer or String and returns a Buffer.
rlp.decode(encoded, [skipRemainderCheck=false]) - Decodes an RLP encoded Buffer, Array or String and returns a Buffer or an Array of Buffers. If skipRemainderCheck is enabled, rlp will just decode the first rlp sequence in the buffer. By default, it would throw an error if there are more bytes in Buffer than used by rlp sequence.
rlp decode <hex string>
rlp encode <json String>
Test uses mocha. To run npm test
Install dev dependencies
npm install
Run
npm run coverage
The results are at
coverage/lcov-report/index.html
FAQs
Recursive Length Prefix Encoding Module
The npm package rlp receives a total of 492,846 weekly downloads. As such, rlp popularity was classified as popular.
We found that rlp demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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