Uploader::getTokenSalt

private function getTokenSalt($params = []): string
{
	$controller = $this->getController();
	$options = $controller->getOptions();
	ksort($options);

	$fingerprint =
		$controller instanceof CustomFingerprint
			? $controller->getFingerprint()
			: (string)bitrix_sessid()
	;

	return md5(serialize(
		array_merge(
			$params,
			[
				$controller->getName(),
				$options,
				$fingerprint,
			]
		)
	));
}