ParagonIE\Halite\File::checksum PHP 메소드

    public static function checksum($filePath, Key $key = null, $raw = false) : string
    {
        if (\is_resource($filePath) || \is_string($filePath)) {
            $readOnly = new ReadOnlyFile($filePath);
            $checksum = self::checksumData($readOnly, $key, $raw);
            $readOnly->close();
            return $checksum;
        }
        throw new InvalidType('Argument 1: Expected a filename or resource');
    }

 /**
  * UpdateFile constructor.
  * @param array $data
  */
 public function __construct(array $data)
 {
     $this->path = $data['path'];
     $this->version = $data['version'];
     $this->size = (int) ($data['size'] ?? \filesize($data['path']));
     $this->hash = File::checksum($data['path']);
 }