sync-sha1

Synchronous sha1 in JavaScript

Shamelessly stolen from jbt/tiny-hashes and improved.

It is basically a synchronous sha1() hash function for browsers, with no guaranties.

The improvement consists in the usage of the Uint32Array instead of Array internaly and compatibility with Uint8Array on input/output.

For Node.js you should use the crypto module!

Usage

The Easy way

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

sha1('sync-sha1').toString('hex'); // "150f7d2a6e9f80f03c639b17878bce65b5a033a8"

The Tiny way

import sha1 from 'sync-sha1/rawSha1'; // rollup.js ?

const buffer = new Uint8Array('sync-sha1'.split('').map((c) => c.charCodeAt(0)));
const hash = sha1(buffer);
hash.reduce((r, c) => r += (c >>> 0).toString(16).padStart(2,'0'), ''); // "150f7d2a6e9f80f03c639b17878bce65b5a033a8"

The Native Browser way

import sha1 from 'sync-sha1/asyncSha1'; // rollup.js ?

const hash = await sha1('sync-sha1');
hash.toString('hex'); // "150f7d2a6e9f80f03c639b17878bce65b5a033a8"

Direct Browser include:

<script src="https://unpkg.com/sync-sha1"></script>

Use it at your own risk!