Fixes #151

src/Util/KeyAlgorithm/DefaultAlgorithm.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * OAuth 2.0 Secure key interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Util\KeyAlgorithm;
+
+
+class DefaultAlgorithm implements KeyAlgorithmInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function generate($len = 40)
+    {
+        // 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 || $strong === false) {
+            // @codeCoverageIgnoreStart
+            throw new \Exception('Error Generating Key');
+            // @codeCoverageIgnoreEnd
+        }
+
+        return substr(str_replace(array('/', '+', '='), '', base64_encode($bytes)), 0, $len);
+    }
+}

src/Util/KeyAlgorithm/KeyAlgorithmInterface.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * OAuth 2.0 Secure key interface
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        https://github.com/thephpleague/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Util\KeyAlgorithm;
+
+interface KeyAlgorithmInterface
+{
+    /**
+     * Generate a new unique code
+     * @param  integer $len Length of the generated code
+     * @return string
+     */
+    public function generate($len = 40);
+}

src/Util/SecureKey.php

@@ -2,39 +2,52 @@
 /**
  * OAuth 2.0 Secure key generator
  *
- * @package     league/oauth2-server
+ * @package     php-loep/oauth2-server
  * @author      Alex Bilbie <hello@alexbilbie.com>
- * @copyright   Copyright (c) Alex Bilbie
+ * @copyright   Copyright (c) 2013 PHP League of Extraordinary Packages
  * @license     http://mit-license.org/
- * @link        https://github.com/thephpleague/oauth2-server
+ * @link        http://github.com/php-loep/oauth2-server
  */
 
 namespace League\OAuth2\Server\Util;
 
+use League\OAuth2\Server\Util\KeyAlgorithm\DefaultAlgorithm;
+use League\OAuth2\Server\Util\KeyAlgorithm\KeyAlgorithmInterface;
+
 /**
  * SecureKey class
  */
 class SecureKey
 {
+    protected static $algorithm;
+
     /**
      * Generate a new unique code
      * @param  integer $len Length of the generated code
      * @return string
      */
-    public static function make($len = 40)
+    public static function generate($len = 40)
     {
-        // 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 || $strong === false) {
-            // @codeCoverageIgnoreStart
-            throw new \Exception('Error Generating Key');
-            // @codeCoverageIgnoreEnd
+        return self::getAlgorithm()->generate($len);
     }
 
-        return substr(str_replace(array('/', '+', '='), '', base64_encode($bytes)), 0, $len);
+    /**
+     * @param KeyAlgorithmInterface $algorithm
+     */
+    public static function setAlgorithm(KeyAlgorithmInterface $algorithm)
+    {
+        self::$algorithm = $algorithm;
+    }
+
+    /**
+     * @return KeyAlgorithmInterface
+     */
+    public static function getAlgorithm()
+    {
+        if (is_null(self::$algorithm)) {
+            self::$algorithm = new DefaultAlgorithm();
+        }
+
+        return self::$algorithm;
     }
 }

tests/util/SecureKeyTest.php

@@ -2,19 +2,36 @@
 
 namespace LeagueTests\Util;
 
-use League\OAuth2\Server\Util\SecureKey;
+use \League\OAuth2\Server\Util\SecureKey;
 use \Mockery as M;
 
 class SecureKeyTest extends \PHPUnit_Framework_TestCase
 {
-	function testMake()
+	function testGenerate()
     {
-		$v1 = SecureKey::make();
-		$v2 = SecureKey::make();
-		$v3 = SecureKey::make(50);
+        $v1 = SecureKey::generate();
+        $v2 = SecureKey::generate();
+        $v3 = SecureKey::generate(50);
 
         $this->assertEquals(40, strlen($v1));
         $this->assertTrue($v1 !== $v2);
         $this->assertEquals(50, strlen($v3));
     }
+
+    public function testGenerateWithDifferentAlgorithm()
+    {
+        $algorithm = $this->getMock('League\OAuth2\Server\Util\KeyAlgorithm\KeyAlgorithmInterface');
+
+        $result = 'dasdsdsaads';
+        $algorithm
+            ->expects($this->once())
+            ->method('generate')
+            ->with(11)
+            ->will($this->returnValue($result))
+        ;
+
+        SecureKey::setAlgorithm($algorithm);
+        $this->assertSame($algorithm, SecureKey::getAlgorithm());
+        $this->assertEquals($result, SecureKey::generate(11));
+    }
 }