public static void Load()
    {
        if (File.Exists(Application.persistentDataPath + "/files.dat"))
        {
            BinaryFormatter bf   = new BinaryFormatter();
            FileStream      file = File.Open(Application.persistentDataPath + "/files.dat", FileMode.Open);
            Files_data      data = (Files_data)bf.Deserialize(file);

            remember_me     = data.RememberMe;
            password        = Decrypt(data.Password);
            email           = Decrypt(data.Email);
            pu_filenames    = Decrypt(data.Pu_FilesNames);
            pu_fileCallname = Decrypt(data.Pu_FilesCallNames);
            pr_filenames    = Decrypt(data.Pr_FilesNames);
            pr_fileCallname = Decrypt(data.Pr_FilesCallNames);

            file.Close();

            if (remember_me == true)
            {
                isLogIn = true;
            }
        }
        else
        {
            //saving first time
            pu_filenames    = "Pu_Note:info.dat;";
            pu_fileCallname = "Pu_Note:Quick Public Note;";
            pr_filenames    = "Pr_Note:pr_info1.dat;";
            pr_fileCallname = "Pr_Note:Quick Private Note;";
            saveload.Save();
        }
    }
    public static void Save()
    {
        BinaryFormatter bf   = new BinaryFormatter();
        FileStream      file = File.Create(Application.persistentDataPath + "/files.dat");
        Files_data      data = new Files_data();

        data.RememberMe        = remember_me;
        data.Password          = Encrypt(password);
        data.Email             = Encrypt(email);
        data.Pu_FilesNames     = Encrypt(pu_filenames);
        data.Pu_FilesCallNames = Encrypt(pu_fileCallname);
        data.Pr_FilesNames     = Encrypt(pr_filenames);
        data.Pr_FilesCallNames = Encrypt(pr_fileCallname);

        bf.Serialize(file, data);
        file.Close();
    }