Provides a \CMuench\Yubikey\AuthenticationClient class which can be used to authenticate against
the yubikey auth servers.
It's possible to add own servers by config.
Example:
<?php
require_once 'vendor/autoload.php';
// with Guzzle
// composer require "php-http/guzzle5-adapter"
$otp = '<otp>'; // Onetime password
$yubikey = '<yubikey>'; // Yubikey of the user
$clientId = '<client_id>'; // Client-ID of the application
$clientSecret = '<api_secret>'; // API-Secret of the application
$apiConfiguration = new \CMuench\Yubikey\Value\ApiConfiguration($clientId, $clientSecret);
$httpClient = new \Http\Adapter\Guzzle5();
$requestFactory = new \Http\Message\MessageFactory\GuzzleMessageFactory();
$client = new \CMuench\Yubikey\AuthenticationClient($apiConfiguration, $httpClient, $requestFactory);
$isValid = $client->verify($otp, $yubikey);