--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Crypt.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,168 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Crypt
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Crypt.php 23089 2010-10-12 17:05:31Z padraic $
+ */
+
+/**
+ * @category   Zend
+ * @package    Zend_Crypt
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Crypt
+{
+
+    const TYPE_OPENSSL = 'openssl';
+    const TYPE_HASH = 'hash';
+    const TYPE_MHASH = 'mhash';
+
+    protected static $_type = null;
+
+    /**
+     * @var array
+     */
+    protected static $_supportedAlgosOpenssl = array(
+        'md2',
+        'md4',
+        'mdc2',
+        'rmd160',
+        'sha',
+        'sha1',
+        'sha224',
+        'sha256',
+        'sha384',
+        'sha512'
+    );
+
+    /**
+     * @var array
+     */
+    protected static $_supportedAlgosMhash = array(
+        'adler32',
+        'crc32',
+        'crc32b',
+        'gost',
+        'haval128',
+        'haval160',
+        'haval192',
+        'haval256',
+        'md4',
+        'md5',
+        'ripemd160',
+        'sha1',
+        'sha256',
+        'tiger',
+        'tiger128',
+        'tiger160'
+    );
+
+    /**
+     * @param string $algorithm
+     * @param string $data
+     * @param bool $binaryOutput
+     * @return unknown
+     */
+    public static function hash($algorithm, $data, $binaryOutput = false)
+    {
+        $algorithm = strtolower($algorithm);
+        if (function_exists($algorithm)) {
+            return $algorithm($data, $binaryOutput);
+        }
+        self::_detectHashSupport($algorithm);
+        $supportedMethod = '_digest' . ucfirst(self::$_type);
+        $result = self::$supportedMethod($algorithm, $data, $binaryOutput);
+        return $result;
+    }
+
+    /**
+     * @param string $algorithm
+     * @throws Zend_Crypt_Exception
+     */
+    protected static function _detectHashSupport($algorithm)
+    {
+        if (function_exists('hash')) {
+            self::$_type = self::TYPE_HASH;
+            if (in_array($algorithm, hash_algos())) {
+               return;
+            }
+        }
+        if (function_exists('mhash')) {
+            self::$_type = self::TYPE_MHASH;
+            if (in_array($algorithm, self::$_supportedAlgosMhash)) {
+               return;
+            }
+        }
+        if (function_exists('openssl_digest')) {
+            if ($algorithm == 'ripemd160') {
+                $algorithm = 'rmd160';
+            }
+            self::$_type = self::TYPE_OPENSSL;
+            if (in_array($algorithm, self::$_supportedAlgosOpenssl)) {
+               return;
+            }
+        }
+        /**
+         * @see Zend_Crypt_Exception
+         */
+        require_once 'Zend/Crypt/Exception.php';
+        throw new Zend_Crypt_Exception('\'' . $algorithm . '\' is not supported by any available extension or native function');
+    }
+
+    /**
+     * @param string $algorithm
+     * @param string $data
+     * @param bool $binaryOutput
+     * @return string
+     */
+    protected static function _digestHash($algorithm, $data, $binaryOutput)
+    {
+        return hash($algorithm, $data, $binaryOutput);
+    }
+
+    /**
+     * @param string $algorithm
+     * @param string $data
+     * @param bool $binaryOutput
+     * @return string
+     */
+    protected static function _digestMhash($algorithm, $data, $binaryOutput)
+    {
+        $constant = constant('MHASH_' . strtoupper($algorithm));
+        $binary = mhash($constant, $data);
+        if ($binaryOutput) {
+            return $binary;
+        }
+        return bin2hex($binary);
+    }
+
+    /**
+     * @param string $algorithm
+     * @param string $data
+     * @param bool $binaryOutput
+     * @return string
+     */
+    protected static function _digestOpenssl($algorithm, $data, $binaryOutput)
+    {
+        if ($algorithm == 'ripemd160') {
+            $algorithm = 'rmd160';
+        }
+        return openssl_digest($data, $algorithm, $binaryOutput);
+    }
+
+}