js-sha256

What is js-sha256?

The js-sha256 npm package is a simple SHA-256 & SHA-224 hash function for JavaScript supports UTF-8 encoding. It can be used in various environments like web browsers and Node.js. It provides functionalities for hashing messages with SHA-256 and SHA-224 algorithms.

What are js-sha256's main functionalities?

SHA-256 Hash

Generates a SHA-256 hash of the input string. This is useful for creating unique identifiers for data, secure password storage, and ensuring data integrity.

sha256('message')

SHA-224 Hash

Generates a SHA-224 hash of the input string. Similar to SHA-256, but produces a shorter hash value. It's used for applications where hash length is a concern but still requires a high level of security.

sha224('message')

HMAC-SHA-256

Generates a HMAC (Hash-based Message Authentication Code) using SHA-256. This is used for verifying both the data integrity and the authenticity of a message.

sha256.hmac('key', 'message')

HMAC-SHA-224

Generates a HMAC using SHA-224. Similar to HMAC-SHA-256, it's used for data integrity and authenticity but with a shorter hash value.

sha224.hmac('key', 'message')

Other packages similar to js-sha256

crypto-js

Crypto-js is a package that provides cryptographic functionalities including SHA-256. It offers a broader range of cryptographic algorithms compared to js-sha256, making it suitable for applications requiring more than just SHA-256 or SHA-224.

sha.js

Sha.js is a streaming SHA hashes module for Node.js that supports SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512. It's more versatile than js-sha256 in terms of the variety of SHA algorithms supported.

README

js-sha256

A simple SHA-256 / SHA-224 hash function for JavaScript supports UTF-8 encoding.

Demo

SHA256 Online
SHA224 Online
SHA256 File Online
SHA225 File Online

Download

Compress
Uncompress

Installation

You can also install js-sha256 by using Bower.

bower install js-sha256

For node.js, you can use this command to install:

npm install js-sha256

Usage

You could use like this:

sha256('Message to hash');
sha224('Message to hash');

var hash = sha256.create();
hash.update('Message to hash');
hash.hex();

var hash2 = sha256.update('Message to hash');
hash2.update('Message2 to hash');
hash2.array();

// HMAC
sha256.hmac('key', 'Message to hash');
sha224.hmac('key', 'Message to hash');

var hash = sha256.hmac.create('key');
hash.update('Message to hash');
hash.hex();

var hash2 = sha256.hmac.update('key', 'Message to hash');
hash2.update('Message2 to hash');
hash2.array();

Node.js

If you use node.js, you should require the module first:

var sha256 = require('js-sha256');

or

var sha256 = require('js-sha256').sha256;
var sha224 = require('js-sha256').sha224;

or

const { sha256, sha224 } = require('js-sha256');

TypeScript

If you use TypeScript, you can import like this:

import { sha256, sha224 } from 'js-sha256';

RequireJS

It supports AMD:

require(['your/path/sha256.js'], function(sha256) {
// ...
});

Example

sha256(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
sha256('The quick brown fox jumps over the lazy dog'); // d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592
sha256('The quick brown fox jumps over the lazy dog.'); // ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c
sha224(''); // d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f
sha224('The quick brown fox jumps over the lazy dog'); // 730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525
sha224('The quick brown fox jumps over the lazy dog.'); // 619cba8e8e05826e9b8c519c0a5c68f4fb653e8a3d8aa04bb2c8cd4c

// It also supports UTF-8 encoding
sha256('中文'); // 72726d8818f693066ceb69afa364218b692e62ea92b385782363780f47529c21
sha224('中文'); // dfbab71afdf54388af4d55f8bd3de8c9b15e0eb916bf9125f4a959d4

// It also supports byte `Array`, `Uint8Array`, `ArrayBuffer` input
sha256([]); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
sha256(new Uint8Array([211, 212])); // 182889f925ae4e5cc37118ded6ed87f7bdc7cab5ec5e78faef2e50048999473f

// Different output
sha256(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
sha256.hex(''); // e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
sha256.array(''); // [227, 176, 196, 66, 152, 252, 28, 20, 154, 251, 244, 200, 153, 111, 185, 36, 39, 174, 65, 228, 100, 155, 147, 76, 164, 149, 153, 27, 120, 82, 184, 85]
sha256.digest(''); // [227, 176, 196, 66, 152, 252, 28, 20, 154, 251, 244, 200, 153, 111, 185, 36, 39, 174, 65, 228, 100, 155, 147, 76, 164, 149, 153, 27, 120, 82, 184, 85]
sha256.arrayBuffer(''); // ArrayBuffer

Benchmark

jsPerf Benchmark

License

The project is released under the MIT license.

Contact

The project's website is located at https://github.com/emn178/js-sha256
Author: Chen, Yi-Cyuan ([e-mail])