From 12fe58d997d2066dc362fd393a18b4e5da190513 Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Wed, 27 May 2009 15:11:53 -0700
Subject: Rename 'kohana' to 'system' to conform to the Kohana filesystem
 layout.  I'm comfortable with us not clearly drawing the distinction about
 the fact that it's Kohana.

---
 kohana/libraries/Encrypt.php | 164 -------------------------------------------
 1 file changed, 164 deletions(-)
 delete mode 100644 kohana/libraries/Encrypt.php

(limited to 'kohana/libraries/Encrypt.php')

diff --git a/kohana/libraries/Encrypt.php b/kohana/libraries/Encrypt.php
deleted file mode 100644
index 3d564f99..00000000
--- a/kohana/libraries/Encrypt.php
+++ /dev/null
@@ -1,164 +0,0 @@
-<?php defined('SYSPATH') OR die('No direct access allowed.');
-/**
- * The Encrypt library provides two-way encryption of text and binary strings
- * using the MCrypt extension.
- * @see http://php.net/mcrypt
- *
- * $Id: Encrypt.php 4072 2009-03-13 17:20:38Z jheathco $
- *
- * @package    Core
- * @author     Kohana Team
- * @copyright  (c) 2007-2008 Kohana Team
- * @license    http://kohanaphp.com/license.html
- */
-class Encrypt_Core {
-
-	// OS-dependant RAND type to use
-	protected static $rand;
-
-	// Configuration
-	protected $config;
-
-	/**
-	 * Returns a singleton instance of Encrypt.
-	 *
-	 * @param   array  configuration options
-	 * @return  Encrypt_Core
-	 */
-	public static function instance($config = NULL)
-	{
-		static $instance;
-
-		// Create the singleton
-		empty($instance) and $instance = new Encrypt((array) $config);
-
-		return $instance;
-	}
-
-	/**
-	 * Loads encryption configuration and validates the data.
-	 *
-	 * @param   array|string      custom configuration or config group name
-	 * @throws  Kohana_Exception
-	 */
-	public function __construct($config = FALSE)
-	{
-		if ( ! defined('MCRYPT_ENCRYPT'))
-			throw new Kohana_Exception('encrypt.requires_mcrypt');
-
-		if (is_string($config))
-		{
-			$name = $config;
-
-			// Test the config group name
-			if (($config = Kohana::config('encryption.'.$config)) === NULL)
-				throw new Kohana_Exception('encrypt.undefined_group', $name);
-		}
-
-		if (is_array($config))
-		{
-			// Append the default configuration options
-			$config += Kohana::config('encryption.default');
-		}
-		else
-		{
-			// Load the default group
-			$config = Kohana::config('encryption.default');
-		}
-
-		if (empty($config['key']))
-			throw new Kohana_Exception('encrypt.no_encryption_key');
-
-		// Find the max length of the key, based on cipher and mode
-		$size = mcrypt_get_key_size($config['cipher'], $config['mode']);
-
-		if (strlen($config['key']) > $size)
-		{
-			// Shorten the key to the maximum size
-			$config['key'] = substr($config['key'], 0, $size);
-		}
-
-		// Find the initialization vector size
-		$config['iv_size'] = mcrypt_get_iv_size($config['cipher'], $config['mode']);
-
-		// Cache the config in the object
-		$this->config = $config;
-
-		Kohana::log('debug', 'Encrypt Library initialized');
-	}
-
-	/**
-	 * Encrypts a string and returns an encrypted string that can be decoded.
-	 *
-	 * @param   string  data to be encrypted
-	 * @return  string  encrypted data
-	 */
-	public function encode($data)
-	{
-		// Set the rand type if it has not already been set
-		if (Encrypt::$rand === NULL)
-		{
-			if (KOHANA_IS_WIN)
-			{
-				// Windows only supports the system random number generator
-				Encrypt::$rand = MCRYPT_RAND;
-			}
-			else
-			{
-				if (defined('MCRYPT_DEV_URANDOM'))
-				{
-					// Use /dev/urandom
-					Encrypt::$rand = MCRYPT_DEV_URANDOM;
-				}
-				elseif (defined('MCRYPT_DEV_RANDOM'))
-				{
-					// Use /dev/random
-					Encrypt::$rand = MCRYPT_DEV_RANDOM;
-				}
-				else
-				{
-					// Use the system random number generator
-					Encrypt::$rand = MCRYPT_RAND;
-				}
-			}
-		}
-
-		if (Encrypt::$rand === MCRYPT_RAND)
-		{
-			// The system random number generator must always be seeded each
-			// time it is used, or it will not produce true random results
-			mt_srand();
-		}
-
-		// Create a random initialization vector of the proper size for the current cipher
-		$iv = mcrypt_create_iv($this->config['iv_size'], Encrypt::$rand);
-
-		// Encrypt the data using the configured options and generated iv
-		$data = mcrypt_encrypt($this->config['cipher'], $this->config['key'], $data, $this->config['mode'], $iv);
-
-		// Use base64 encoding to convert to a string
-		return base64_encode($iv.$data);
-	}
-
-	/**
-	 * Decrypts an encoded string back to its original value.
-	 *
-	 * @param   string  encoded string to be decrypted
-	 * @return  string  decrypted data
-	 */
-	public function decode($data)
-	{
-		// Convert the data back to binary
-		$data = base64_decode($data);
-
-		// Extract the initialization vector from the data
-		$iv = substr($data, 0, $this->config['iv_size']);
-
-		// Remove the iv from the data
-		$data = substr($data, $this->config['iv_size']);
-
-		// Return the decrypted data, trimming the \0 padding bytes from the end of the data
-		return rtrim(mcrypt_decrypt($this->config['cipher'], $this->config['key'], $data, $this->config['mode'], $iv), "\0");
-	}
-
-} // End Encrypt
-- 
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