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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 * - This is outdated.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\Utils\Phpfunc; /** * Interface for AES encryption adapters * * @package FrameworkOnFramework * @since 1.0 * @deprecated Use phpseclib/phpseclib version 3 Instead. */ interface AesInterface { /** * Sets the AES encryption mode. * * WARNING: The strength is deprecated as it has a different effect in MCrypt and OpenSSL. MCrypt was abandoned in * 2003 before the Rijndael-128 algorithm was officially the Advanced Encryption Standard (AES). MCrypt also offered * Rijndael-192 and Rijndael-256 algorithms with different block sizes. These are NOT used in AES. OpenSSL, however, * implements AES correctly. It always uses a 128-bit (16 byte) block. The 192 and 256 bit strengths refer to the * key size, not the block size. Therefore using different strengths in MCrypt and OpenSSL will result in different * and incompatible ciphertexts. * * TL;DR: Always use $strength = 128! * * @param string $mode Choose between CBC (recommended) or ECB * @param int $strength Bit strength of the key (128, 192 or 256 bits). DEPRECATED. READ NOTES ABOVE. * * @return mixed */ public function setEncryptionMode($mode = 'cbc', $strength = 128); /** * Encrypts a string. Returns the raw binary ciphertext. * * WARNING: The plaintext is zero-padded to the algorithm's block size. You are advised to store the size of the * plaintext and trim the string to that length upon decryption. * * @param string $plainText The plaintext to encrypt * @param string $key The raw binary key (will be zero-padded or chopped if its size is different than the block size) * @param null|string $iv The initialization vector (for CBC mode algorithms) * * @return string The raw encrypted binary string. */ public function encrypt($plainText, $key, $iv = null); /** * Decrypts a string. Returns the raw binary plaintext. * * $ciphertext MUST start with the IV followed by the ciphertext, even for EBC data (the first block of data is * dropped in EBC mode since there is no concept of IV in EBC). * * WARNING: The returned plaintext is zero-padded to the algorithm's block size during encryption. You are advised * to trim the string to the original plaintext's length upon decryption. While rtrim($decrypted, "\0") sounds * appealing it's NOT the correct approach for binary data (zero bytes may actually be part of your plaintext, not * just padding!). * * @param string $cipherText The ciphertext to encrypt * @param string $key The raw binary key (will be zero-padded or chopped if its size is different than the block size) * * @return string The raw unencrypted binary string. */ public function decrypt($cipherText, $key); /** * Returns the encryption block size in bytes * * @return int */ public function getBlockSize(); /** * Is this adapter supported? * * @param Phpfunc $phpfunc * * @return bool */ public function isSupported(Phpfunc $phpfunc = null); }
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