Accidentally merged wrong version of file

src/Util/KeyAlgorithm/DefaultAlgorithm.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * OAuth 2.0 Secure key generator
+ * OAuth 2.0 Secure key interface
  *
  * @package     league/oauth2-server
  * @author      Alex Bilbie <hello@alexbilbie.com>
@@ -13,34 +13,23 @@ namespace League\OAuth2\Server\Util\KeyAlgorithm;
 
 class DefaultAlgorithm implements KeyAlgorithmInterface
 {
-    protected static $algorithm;
-
     /**
      * {@inheritdoc}
      */
     public function generate($len = 40)
     {
-        return self::getAlgorithm()->make($len);
+        // We generate twice as many bytes here because we want to ensure we have
+        // enough after we base64 encode it to get the length we need because we
+        // take out the "/", "+", and "=" characters.
+        $bytes = openssl_random_pseudo_bytes($len * 2, $strong);
+
+        // We want to stop execution if the key fails because, well, that is bad.
+        if ($bytes === false || $strong === false) {
+            // @codeCoverageIgnoreStart
+            throw new \Exception('Error Generating Key');
+            // @codeCoverageIgnoreEnd
         }
 
-    /**
-     * @param KeyAlgorithmInterface $algorithm
-     */
-    public static function setAlgorithm(KeyAlgorithmInterface $algorithm)
-    {
-        self::$algorithm = $algorithm;
-    }
-
-    /**
-     * @return KeyAlgorithmInterface
-     */
-    public static function getAlgorithm()
-    {
-        if (!self::$algorithm) {
-
-            self::$algorithm = new DefaultAlgorithm();
-        }
-
-        return self::$algorithm;
+        return substr(str_replace(array('/', '+', '='), '', base64_encode($bytes)), 0, $len);
     }
 }