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<?php /** * @package FrameworkOnFramework * @subpackage Encryption * @copyright Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved. * @license GNU General Public License version 2 or later; see LICENSE.txt * @note This file has been modified by the Joomla! Project (and VDM) and no longer reflects the original work of its author. * @depreciation This was ported for the sake of those who have stuff encrypted with the FOF encryption suite. * - Do not use this in new projects. * - Expect no updates. * - This is outdated. * - Not best choice for encryption. * - Use phpseclib/phpseclib version 3 Instead. * - Checkout the JCB Crypt Suite. <https://git.vdm.dev/joomla/phpseclib> */ namespace VDM\Joomla\FOF\Encrypt\AES; use VDM\Joomla\FOF\Encrypt\Randval; use VDM\Joomla\FOF\Utils\Phpfunc; use VDM\Joomla\FOF\Encrypt\AES\AesInterface; use VDM\Joomla\FOF\Encrypt\AES\Abstraction; /** * Mcrypt AES encryption class * * @package FrameworkOnFramework * @since 1.0 * @deprecated Use phpseclib/phpseclib version 3 Instead. */ class Mcrypt extends Abstraction implements AesInterface { protected $cipherType = MCRYPT_RIJNDAEL_128; protected $cipherMode = MCRYPT_MODE_CBC; public function setEncryptionMode($mode = 'cbc', $strength = 128) { switch ((int) $strength) { default: case '128': $this->cipherType = MCRYPT_RIJNDAEL_128; break; case '192': $this->cipherType = MCRYPT_RIJNDAEL_192; break; case '256': $this->cipherType = MCRYPT_RIJNDAEL_256; break; } switch (strtolower($mode)) { case 'ecb': $this->cipherMode = MCRYPT_MODE_ECB; break; default: case 'cbc': $this->cipherMode = MCRYPT_MODE_CBC; break; } } public function encrypt($plainText, $key, $iv = null) { $iv_size = $this->getBlockSize(); $key = $this->resizeKey($key, $iv_size); $iv = $this->resizeKey($iv, $iv_size); if (empty($iv)) { $randVal = new Randval(); $iv = $randVal->generate($iv_size); } $cipherText = mcrypt_encrypt($this->cipherType, $key, $plainText, $this->cipherMode, $iv); $cipherText = $iv . $cipherText; return $cipherText; } public function decrypt($cipherText, $key) { $iv_size = $this->getBlockSize(); $key = $this->resizeKey($key, $iv_size); $iv = substr($cipherText, 0, $iv_size); $cipherText = substr($cipherText, $iv_size); $plainText = mcrypt_decrypt($this->cipherType, $key, $cipherText, $this->cipherMode, $iv); return $plainText; } public function isSupported(Phpfunc $phpfunc = null) { if (!is_object($phpfunc) || !($phpfunc instanceof $phpfunc)) { $phpfunc = new Phpfunc(); } if (!$phpfunc->function_exists('mcrypt_get_key_size')) { return false; } if (!$phpfunc->function_exists('mcrypt_get_iv_size')) { return false; } if (!$phpfunc->function_exists('mcrypt_create_iv')) { return false; } if (!$phpfunc->function_exists('mcrypt_encrypt')) { return false; } if (!$phpfunc->function_exists('mcrypt_decrypt')) { return false; } if (!$phpfunc->function_exists('mcrypt_list_algorithms')) { return false; } if (!$phpfunc->function_exists('hash')) { return false; } if (!$phpfunc->function_exists('hash_algos')) { return false; } $algorightms = $phpfunc->mcrypt_list_algorithms(); if (!in_array('rijndael-128', $algorightms)) { return false; } if (!in_array('rijndael-192', $algorightms)) { return false; } if (!in_array('rijndael-256', $algorightms)) { return false; } $algorightms = $phpfunc->hash_algos(); if (!in_array('sha256', $algorightms)) { return false; } return true; } public function getBlockSize() { return mcrypt_get_iv_size($this->cipherType, $this->cipherMode); } }
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