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diff --git a/vendor/phpseclib/phpseclib2_compat/src/Crypt/Twofish.php b/vendor/phpseclib/phpseclib2_compat/src/Crypt/Twofish.php
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index 000000000..f57c54c9d
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+++ b/vendor/phpseclib/phpseclib2_compat/src/Crypt/Twofish.php
@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * Pure-PHP implementation of Twofish.
+ *
+ * Uses mcrypt, if available, and an internal implementation, otherwise.
+ *
+ * PHP version 5
+ *
+ * Useful resources are as follows:
+ *
+ *  - {@link http://en.wikipedia.org/wiki/Twofish Wikipedia description of Twofish}
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include 'vendor/autoload.php';
+ *
+ *    $twofish = new \phpseclib\Crypt\Twofish();
+ *
+ *    $twofish->setKey('12345678901234567890123456789012');
+ *
+ *    $plaintext = str_repeat('a', 1024);
+ *
+ *    echo $twofish->decrypt($twofish->encrypt($plaintext));
+ * ?>
+ * </code>
+ *
+ * @category  Crypt
+ * @package   Twofish
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @author    Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @link      http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib\Crypt;
+
+/**
+ * Pure-PHP implementation of Twofish.
+ *
+ * @package Twofish
+ * @author  Jim Wigginton <terrafrost@php.net>
+ * @access  public
+ */
+class Twofish extends Base
+{
+    /**
+     * Turns key lengths, be they valid or invalid, to valid key lengths
+     *
+     * @param int $length
+     * @access private
+     * @return int
+     */
+    protected function calculateNewKeyLength($length)
+    {
+        switch (true) {
+            case $length <= 128:
+                return 128;
+            case $length <= 192:
+                return 192;
+            default:
+                return 256;
+        }
+    }
+}
+\ No newline at end of file