--- /dev/null
+<?php
+/**
+ * The Mixer strategy interface.
+ *
+ * All mixing strategies must implement this interface
+ *
+ * PHP version 5.3
+ *
+ * @category PHPCryptLib
+ * @package Random
+ * @author Anthony Ferrara <ircmaxell@ircmaxell.com>
+ * @copyright 2011 The Authors
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @version Build @@version@@
+ */
+
+namespace CryptLib\Random;
+
+/**
+ * The Mixer strategy interface.
+ *
+ * All mixing strategies must implement this interface
+ *
+ * @category PHPCryptLib
+ * @package Random
+ * @author Anthony Ferrara <ircmaxell@ircmaxell.com>
+ * @codeCoverageIgnore
+ */
+interface Mixer {
+
+ /**
+ * Return an instance of Strength indicating the strength of the mixer
+ *
+ * @return Strength An instance of one of the strength classes
+ */
+ public static function getStrength();
+
+ /**
+ * Test to see if the mixer is available
+ *
+ * @return boolean If the mixer is available on the system
+ */
+ public static function test();
+
+ /**
+ * Mix the provided array of strings into a single output of the same size
+ *
+ * All elements of the array should be the same size.
+ *
+ * @param array $parts The parts to be mixed
+ *
+ * @return string The mixed result
+ */
+ public function mix(array $parts);
+
+}