--- /dev/null
+<?php
+// Own namespace
+namespace CoreFramework\Cryto;
+
+// Import framework stuff
+use CoreFramework\Generic\FrameworkInterface;
+
+/**
+ * A helper class for cryptographical things like hashing passwords and so on
+ *
+ * @author Roland Haeder <webmaster@shipsimu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2017 Core Developer Team
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.shipsimu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+interface Cryptable extends FrameworkInterface {
+ /**
+ * Hashes a string with salt and returns the hash. If an old previous hash
+ * is supplied the method will use the first X chars of that hash for hashing
+ * the password. This is useful if you want to check if password is identical
+ * for authorization purposes.
+ *
+ * @param $str Unhashed string
+ * @param $oldHash A hash from previous hashed string
+ * @param $withFixed Whether to include a fixed salt (not recommended in p2p applications)
+ * @return $hashed The hashed and salted string
+ */
+ function hashString ($str, $oldHash = '', $withFixed = TRUE);
+
+ /**
+ * Encrypt the string with fixed salt
+ *
+ * @param $str The unencrypted string
+ * @param $key Optional key, if none provided, a random key will be generated
+ * @return $encrypted Encrypted string
+ */
+ function encryptString ($str, $key = NULL);
+
+ /**
+ * Decrypt the string with fixed salt
+ *
+ * @param $encrypted Encrypted string
+ * @return $str The unencrypted string
+ */
+ function decryptString ($encrypted);
+
+}