public function check()
	{
		if($this->cipher === null)
			return false;
		if($this->compression === 0)
			return false;
		if($this->masterSeed === null)
			return false;
		if($this->transformSeed === null)
			return false;
		if($this->rounds === null)
			return false;
		if($this->encryptionIV === null)
			return false;
		if($this->startBytes === null)
			return false;
		if($this->headerHash === null)
			return false;
		if($this->randomStreamKey === null)
			return false;
		if($this->randomStream === 0)
			return false;
		return true;
	}