API key authorization for Laravel with replay attack prevention

v1.0.1 2020-07-24 12:33 UTC

This package is auto-updated.

Last update: 2022-06-24 20:34:03 UTC


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API Key Authorization for Laravel with replay attack prevention


$ composer require mxl/laravel-api-key

How it works?

Both sides (i.e. client and server) have a secret key. Client calculates a token - hash value for concatenated secret key and current timestamp. The Token and the timestamp are sent with request to server as separate HTTP headers. Server recalculates hash value and validates the token by comparing it with this value and by checking that received timestamp belongs to current time ± window interval.


Package uses default configuration from vendor/laravel-api-key/config/apiKey.php:


return [
    'secret' => env('API_KEY_SECRET'),
    'hash' => env('API_KEY_HASH', 'md5'),
    'timestampHeader' => env('API_KEY_TIMESTAMP_HEADER', 'X-Timestamp'),
    'tokenHeader' => env('API_KEY_TOKEN_HEADER', 'X-Authorization'),
    'window' => env('API_KEY_WINDOW', 30),

To change it set environment variables mentioned in this configuration or copy it to your project with:

$ php artisan vendor:publish --provider="MichaelLedin\LaravelApiKey\ApiKeyServiceProvider" --tag=config

and modify config/apiKey.php file.

Notice! If you use php artisan config:cache or php artisan optimize command then you have to publish configuration as described above otherwise env() function will return null for all environment variables. Read more.

The configuration has following parameters:

  • secret - secret key that is known by client and server;
  • hash - an algorithm used to create hash value from secret key and timestamp; for a list of supported algorithms check an output of hash_algos function;
  • timestampHeader - HTTP header used to pass a timestamp;
  • tokenHeader - HTTP header used to pass a token;
  • window - window interval, in seconds;


Assign the middleware to routes using middleware class name:

use \MichaelLedin\LaravelApiKey\AuthorizeApiKey;

Route::get('admin/profile', function () {

or an alias:

Route::get('admin/profile', function () {


Other useful Laravel packages from the author


See the LICENSE file for details.