add methods to decrypt return data from router

[GitHub/Stricted/speedport-hybrid-php-api.git] / CryptLib / Random / Source / CAPICOM.php

diff --git a/CryptLib/Random/Source/CAPICOM.php b/CryptLib/Random/Source/CAPICOM.php
new file mode 100644 (file)
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+++ b/CryptLib/Random/Source/CAPICOM.php
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+<?php
+/**
+ * The Capicom Random Number Source
+ *
+ * This uses the Windows CapiCom Com object to generate random numbers
+ *
+ * PHP version 5.3
+ *
+ * @category   PHPCryptLib
+ * @package    Random
+ * @subpackage Source
+ * @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\Source;
+
+use CryptLib\Core\Strength;
+
+/**
+ * The Capicom Random Number Source
+ *
+ * This uses the Windows CapiCom Com object to generate random numbers
+ *
+ * @category   PHPCryptLib
+ * @package    Random
+ * @subpackage Source
+ * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
+ * @codeCoverageIgnore
+ */
+class CAPICOM implements \CryptLib\Random\Source {
+
+    /**
+     * Return an instance of Strength indicating the strength of the source
+     *
+     * @return Strength An instance of one of the strength classes
+     */
+    public static function getStrength() {
+        return new Strength(Strength::MEDIUM);
+    }
+
+    /**
+     * Generate a random string of the specified size
+     *
+     * @param int $size The size of the requested random string
+     *
+     * @return string A string of the requested size
+     */
+    public function generate($size) {
+        if (!class_exists('\\COM', false)) {
+            return str_repeat(chr(0), $size);
+        }
+        try {
+            $util = new \COM('CAPICOM.Utilities.1');
+            $data = base64_decode($util->GetRandom($size, 0));
+            return str_pad($data, $size, chr(0));
+        } catch (\Exception $e) {
+            unset($e);
+            return str_repeat(chr(0), $size);
+        }
+    }
+
+}