add methods to decrypt return data from router

[GitHub/Stricted/speedport-hybrid-php-api.git] / CryptLib / Core / BigMath / BCMath.php

diff --git a/CryptLib/Core/BigMath/BCMath.php b/CryptLib/Core/BigMath/BCMath.php
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+++ b/CryptLib/Core/BigMath/BCMath.php
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+<?php
+/**
+ * A class for arbitrary precision math functions implemented using bcmath
+ *
+ * PHP version 5.3
+ *
+ * @category   PHPCryptLib
+ * @package    Core
+ * @subpackage BigMath
+ * @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\Core\BigMath;
+
+/**
+ * A class for arbitrary precision math functions implemented using bcmath
+ *
+ * @category   PHPCryptLib
+ * @package    Core
+ * @subpackage BigMath
+ */
+class BCMath extends \CryptLib\Core\BigMath {
+
+    /**
+     * Add two numbers together
+     * 
+     * @param string $left  The left argument
+     * @param string $right The right argument
+     * 
+     * @return A base-10 string of the sum of the two arguments
+     */
+    public function add($left, $right) {
+        return bcadd($left, $right, 0);
+    }
+
+    /**
+     * Subtract two numbers
+     * 
+     * @param string $left  The left argument
+     * @param string $right The right argument
+     * 
+     * @return A base-10 string of the difference of the two arguments
+     */
+    public function subtract($left, $right) {
+        return bcsub($left, $right);
+    }
+
+}
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