/**
* Set the key to use for the cipher
*
* @param string $key The key to use
*
* @throws InvalidArgumentException If the key is not the correct size
* @return void
*/
public function setKey($key)
{
switch ($this->cipher) {
case 'rijndael-128':
case 'rijndael-192':
case 'rijndael-256':
if (!in_array(strlen($key), array(16, 20, 24, 28, 32))) {
throw new \InvalidArgumentException(sprintf('The supplied key block is in the valid sizes [%d:%s]', strlen($key), '16, 20, 24, 28, 32'));
}
$this->keySize = strlen($key);
default:
parent::setKey($key);
}
}
/**
* Construct the instance for the supplied cipher name
*
* @param string $cipher The cipher to implement
*
* @return void
* @throws InvalidArgumentException if the cipher is not supported
*/
public function __construct($cipher)
{
parent::__construct($cipher);
list(, $bits) = explode('-', $cipher, 2);
$this->setBlockSize($bits);
$this->setKeySize($bits);
static::init();
}
