Authentication REST-API built with Lumen PHP Framework
Laravel Lumen is a stunningly fast PHP micro-framework for building web applications with expressive, elegant syntax.
I used it to build a simple authentication and authorization API for another Desktop application written in C# WPF.
Documentation
Documentation for the framework can be found on the Lumen website.
The authentication logic can be found inside UserController.php
The authorization logic can be found inside FirmaController.php