/**
* @param string $cek
*/
public function __construct($cek = null)
{
if (null === $cek) {
// generate 256bits random cek,
$this->content_encryption_key = Random::string(32);
} else {
$this->content_encryption_key = $cek;
}
}
/**
* @return string
*/
public function generateIv()
{
return Random::string(openssl_cipher_iv_length($this->getMethod()));
}
