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<?php /** * Base Class for all stream ciphers * * PHP version 5 * * @author Jim Wigginton <[email protected]> * @author Hans-Juergen Petrich <[email protected]> * @copyright 2007 Jim Wigginton * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link http://phpseclib.sourceforge.net */ namespace phpseclib3\Crypt\Common; /** * Base Class for all stream cipher classes * * @author Jim Wigginton <[email protected]> */ abstract class StreamCipher extends SymmetricKey { /** * Block Length of the cipher * * Stream ciphers do not have a block size * * @see \phpseclib3\Crypt\Common\SymmetricKey::block_size * @var int */ protected $block_size = 0; /** * Default Constructor. * * @see \phpseclib3\Crypt\Common\SymmetricKey::__construct() * @return \phpseclib3\Crypt\Common\StreamCipher */ public function __construct() { parent::__construct('stream'); } /** * Stream ciphers not use an IV * * @return bool */ public function usesIV() { return false; } }