* setKey('abcdefghijklmnop'); * * $size = 10 * 1024; * $plaintext = ''; * for ($i = 0; $i < $size; $i++) { * $plaintext.= 'a'; * } * * echo $aes->decrypt($aes->encrypt($plaintext)); * ?> * * * @category Crypt * @package AES * @author Jim Wigginton * @copyright 2008 Jim Wigginton * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link http://phpseclib.sourceforge.net */ namespace phpseclib\Crypt; /** * Pure-PHP implementation of AES. * * @package AES * @author Jim Wigginton * @access public */ class AES extends Rijndael { /** * Dummy function * * Since \phpseclib\Crypt\AES extends \phpseclib\Crypt\Rijndael, this function is, technically, available, but it doesn't do anything. * * @see \phpseclib\Crypt\Rijndael::setBlockLength() * @access public * @param int $length */ function setBlockLength($length) { return; } /** * Turns key lengths, be they valid or invalid, to valid key lengths * * @param int $length * @access private * @return int */ protected function calculateNewKeyLength($length) { switch (true) { case $length <= 128: return 128; case $length <= 192: return 192; default: return 256; } } }