/**
* Sets the internal crypt engine
*
* @see Crypt_Base::Crypt_Base()
* @see Crypt_Base::setPreferredEngine()
* @param Integer $engine
* @access public
* @return Integer
*/
function setPreferredEngine($engine)
{
if ($this->mode_3cbc) {
$this->des[0]->setPreferredEngine($engine);
$this->des[1]->setPreferredEngine($engine);
$this->des[2]->setPreferredEngine($engine);
}
return parent::setPreferredEngine($engine);
}