function Decrypt($data, $pwdString)
 {
     return CFileCheckerUtil::__CryptData($data, $pwdString, "D");
 }
 function GetFileCRC($filename)
 {
     $fileString = CFileCheckerUtil::GetFileContents($filename);
     $crc = crc32($fileString);
     return sprintf("%u", $crc);
 }