Include composer dependencies in repo

vendor/christian-riesen/otp/src/Otp/OtpInterface.php

@@ -0,0 +1,65 @@
+<?php
+namespace Otp;
+
+/**
+ * Interface for HOTP and TOTP
+ *
+ * Last update: 2012-06-16
+ *
+ * HMAC-Based One-time Password(HOTP) algorithm specified in RFC 4226
+ * @link https://tools.ietf.org/html/rfc4226
+ *
+ * Time-based One-time Password (TOTP) algorithm specified in RFC 6238
+ * @link https://tools.ietf.org/html/rfc6238
+ *
+ * @author Christian Riesen <chris.riesen@gmail.com>
+ * @link http://christianriesen.com
+ * @license MIT License see LICENSE file
+ */
+
+interface OtpInterface
+{
+    /**
+     * Returns OTP using the HOTP algorithm
+     *
+     * @param string $secret
+     * @param integer $counter
+     * @return string One Time Password
+     */
+    function hotp($secret, $counter);
+    
+    /**
+     * Returns OTP using the TOTP algorithm
+     *
+     * @param string $secret
+     * @param integer $timecounter Optional: Uses current time if null
+     * @return string One Time Password
+     */
+    function totp($secret, $timecounter = null);
+    
+    /**
+     * Checks Hotp against a key
+     *
+     * This is a helper function, but is here to ensure the Totp can be checked
+     * in the same manner.
+     *
+     * @param string $secret
+     * @param integer $counter
+     * @param string $key
+     *
+     * @return boolean If key is correct
+     */
+    function checkHotp($secret, $counter, $key);
+    
+    /**
+     * Checks Totp agains a key
+     *
+     *
+     * @param string $secret
+     * @param integer $key
+     * @param integer $timedrift
+     *
+     * @return boolean If key is correct
+     */
+    function checkTotp($secret, $key, $timedrift = 1);
+}