@ethersproject/keccak256

What is @ethersproject/keccak256?

@ethersproject/keccak256 is a part of the ethers.js library, which is a complete and compact library for interacting with the Ethereum blockchain. The keccak256 module specifically provides functionality for hashing data using the Keccak-256 algorithm, which is a cryptographic hash function used extensively in Ethereum.

What are @ethersproject/keccak256's main functionalities?

Hashing a string

This feature allows you to hash a string using the Keccak-256 algorithm. The `toUtf8Bytes` function is used to convert the string into a byte array, which is then hashed.

const { keccak256 } = require('@ethersproject/keccak256');
const { toUtf8Bytes } = require('@ethersproject/strings');

const data = 'Hello, world!';
const hash = keccak256(toUtf8Bytes(data));
console.log(hash);

Hashing a byte array

This feature allows you to hash a byte array directly using the Keccak-256 algorithm. This is useful for hashing binary data.

const { keccak256 } = require('@ethersproject/keccak256');

const data = new Uint8Array([1, 2, 3, 4, 5]);
const hash = keccak256(data);
console.log(hash);

Hashing a hex string

This feature allows you to hash a hex string using the Keccak-256 algorithm. The `hexlify` function is used to ensure the data is in the correct format.

const { keccak256 } = require('@ethersproject/keccak256');
const { hexlify } = require('@ethersproject/bytes');

const data = '0x123456';
const hash = keccak256(hexlify(data));
console.log(hash);

Other packages similar to @ethersproject/keccak256

js-sha3

The js-sha3 package provides a simple and fast implementation of the Keccak (SHA-3) hash functions. It supports various output formats and is highly optimized for performance. Compared to @ethersproject/keccak256, js-sha3 is more focused on providing a comprehensive suite of SHA-3 hashing functions, while @ethersproject/keccak256 is part of a broader library aimed at Ethereum development.

keccak

The keccak package is a pure JavaScript implementation of the Keccak (SHA-3) hash function. It is designed to be lightweight and easy to use. While it offers similar functionality to @ethersproject/keccak256, it does not integrate as seamlessly with the ethers.js library and its broader Ethereum-related functionalities.

crypto-js

The crypto-js package is a widely-used library that provides a variety of cryptographic algorithms, including SHA-3 (Keccak). It is versatile and can be used for many different cryptographic needs. However, it is not specifically tailored for Ethereum development like @ethersproject/keccak256, which is part of the ethers.js ecosystem.

README

KECCAK256 Hash Function

EXPERIMENTAL

Please see the ethers repository for more informations.

API

@TODO

License

MIT License