Signature

**A laravel HMAC auth package based on Signature-PHP **

Installation

Add iamtartan/laravel-hmac-signature as a requirement to composer.json:

$ composer require iamtartan/laravel-hmac-signature

What is HMAC-SHA authentication?

HMAC-SHA authentication allows you to implement very simple key / secret authentication for your API using hashed signatures.

Making a request for api (version 1.0.0)

use Tartan\Signature\Token;
use Tartan\Signature\Request;

$data    = [
    'first_name' => 'Aboozar', 
    'last_name'  => 'Ghaffari',
    'email'      => 'iamtartan@gmail.com' 
];
$token   = new Token('my_public_key', 'my_private_key');
$request = new Request('POST', 'signup', $data, '1.0.0');

$auth = $request->sign($token);

$finalData = array_merge($auth, $data);

$yourHttpClient->post('signup', $finalData);

Authenticating a response

use Tartan\Signature\Auth;
use Tartan\Signature\Token;
use Tartan\Signature\Guards\CheckKey;
use Tartan\Signature\Guards\CheckVersion;
use Tartan\Signature\Guards\CheckTimestamp;
use Tartan\Signature\Guards\CheckSignature;
use Tartan\Signature\Exceptions\SignatureException;

$auth  = new Auth($request->method(), $request->url(), '1.0.0', $request->all(), [
	new CheckKey,
	new CheckVersion,
	new CheckTimestamp,
	new CheckSignature
]);

$token   = new Token('my_public_key', 'my_private_key');

try {
    $auth->attempt($token);
}

catch (SignatureException $e) {
    // return 401
}

catch (Exception $e) {
    // return 400;
}

Changing the default HTTP request prefix

By default, this package uses auth_* in requests. You can change this behaviour when signing and and authenticating requests:

// default, the HTTP request uses auth_version, auth_key, auth_timestamp and auth_signature
$request->sign($token);
// the HTTP request now uses x-version, x-key, x-timestamp and x-signature
$request->sign($token, 'x-');

If you changed the default, you will need to authenticate the request accordingly:

$auth->attempt($token, 'x-');