Developer Tools

HMAC Hash Generator

Compute cryptographic HMAC hashes client-side with SHA-1, SHA-256, and SHA-512.

100% client-side: your files never leave your browser

Input Message / Data

HMAC Key / Secret

Hash Algorithm

Output Encoding

Computed HMAC Signature

Code Examples

JavaScript (Node.js)

// Node.js Crypto example
const crypto = require('crypto');
const hmac = crypto.createHmac('sha256', 'secret-key')
                   .update('Hello World')
                   .digest('hex');
console.log(hmac);

Python

# Python hmac example
import hmac
import hashlib
import base64

key = b'secret-key'
msg = b'Hello World'
h = hmac.new(key, msg, hashlib.sha256)
result = h.hexdigest()
print(result)

PHP

<?php
// PHP hash_hmac example
$key = 'secret-key';
$msg = 'Hello World';
$hmac = hash_hmac('sha256', $msg, $key, false);
echo $hmac;
?>