js-sha1

What is js-sha1?

The js-sha1 npm package is a JavaScript implementation of the SHA-1 hash function. It allows you to generate SHA-1 hashes from strings, arrays, and array buffers. This package is useful for cryptographic operations, data integrity checks, and other scenarios where SHA-1 hashing is required.

What are js-sha1's main functionalities?

Hashing a String

This feature allows you to generate a SHA-1 hash from a string. The code sample demonstrates how to hash the string 'Hello, World!' and print the resulting hash.

const sha1 = require('js-sha1');
const hash = sha1('Hello, World!');
console.log(hash); // '943a702d06f34599aee1f8da8ef9f7296031d699'

Hashing an Array

This feature allows you to generate a SHA-1 hash from an array of bytes. The code sample demonstrates how to hash the array [0x61, 0x62, 0x63] and print the resulting hash.

const sha1 = require('js-sha1');
const hash = sha1([0x61, 0x62, 0x63]);
console.log(hash); // 'a9993e364706816aba3e25717850c26c9cd0d89d'

Hashing an ArrayBuffer

This feature allows you to generate a SHA-1 hash from an ArrayBuffer. The code sample demonstrates how to hash an ArrayBuffer containing the bytes [0x61, 0x62, 0x63] and print the resulting hash.

const sha1 = require('js-sha1');
const buffer = new ArrayBuffer(3);
const view = new Uint8Array(buffer);
view[0] = 0x61;
view[1] = 0x62;
view[2] = 0x63;
const hash = sha1(buffer);
console.log(hash); // 'a9993e364706816aba3e25717850c26c9cd0d89d'

Other packages similar to js-sha1

crypto-js

CryptoJS is a widely-used library that provides a variety of cryptographic algorithms, including SHA-1, SHA-256, MD5, and more. It offers a more comprehensive set of cryptographic functions compared to js-sha1, making it suitable for applications that require multiple types of hashing and encryption.

hash.js

Hash.js is a library that provides a variety of hash functions, including SHA-1, SHA-256, and SHA-512. It is similar to js-sha1 in that it focuses on hashing, but it offers a broader range of hash functions, making it more versatile for different cryptographic needs.

sha.js

Sha.js is a simple library that provides SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 hash functions. It is similar to js-sha1 but offers additional SHA variants, making it a good choice for applications that require different SHA algorithms.

README

js-sha1

This is a simple SHA1 hash function for JavaScript supports UTF-8 encoding.

Install

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

npm install js-sha1

Usage

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

var sha1 = require('js-sha1');

And you could use like this:

sha1('Message to hash');

Example

Code

sha1('');
sha1('The quick brown fox jumps over the lazy dog');
sha1('The quick brown fox jumps over the lazy dog.');

Output

da39a3ee5e6b4b0d3255bfef95601890afd80709
2fd4e1c67a2d28fced849ee1bb76e7391b93eb12
408d94384216f890ff7a0c3528e8bed1e0b01621

It also support UTF-8 encoding:

Code

sha1('中文');

Output

7be2d2d20c106eee0836c9bc2b939890a78e8fb3

Tests

You can open tests/index.html in browser or use node.js to run node tests/node-test.js for test.

You also could use npm test instance of node tests/node-test.js.

Extensions

jQuery

If you prefer jQuery style, you can add following code to add a jQuery extension.

Code

jQuery.sha1 = sha1

And then you could use like this:

$.sha1('message');

Prototype

If you prefer prototype style, you can add following code to add a prototype extension.

Code

String.prototype.sha1 = function() {
  return sha1(this);
};

And then you could use like this:

'message'.sha1();

Contact

The project's website is located at https://github.com/emn178/js-sha1
Author: [e-mail]

Changelog

v0.1.0 / 2014-01-04

Added

• initial release.