refactoring for dependency injection and testability.

laravel/security/hashing/engine.php

@@ -0,0 +1,22 @@
+<?php namespace Laravel\Security\Hashing;
+
+interface Engine {
+
+	/**
+	 * Perform a one-way hash on a string.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public function hash($value);
+
+	/**
+	 * Determine if an unhashed value matches a given hash.
+	 *
+	 * @param  string  $value
+	 * @param  string  $hash
+	 * @return bool
+	 */
+	public function check($value, $hash);
+
+}