Fehlermeldung bei Verwendung von AssignFile

[turboPASCAL]

// Edit: Quark.

Wäre es nicht besser und etwas sicherer noch eine kleine Verschlüsselung der Daten einzubauen ?

Delphi-Quellcode:

procedure TForm1.Button1Click(Sender: TObject);
type
  TPassword = record
    acData    : array[0..255] of char;
    acControl : array[0..7] of char;
  end;

var
   FPassword : File of TPassword;
   Password  : TPassword;
   i         : integer;
   sCUCMPath : String;

  function Moppel(XPasswords: TPassword): TPassword;
  var n: integer;
  begin
    ZeroMemory(@Result, sizeof(TPassword));
    for n := 0 to length(XPasswords.acData)-1 do
    begin
      if n <= length(XPasswords.acControl)-1 then
        Result.acControl[n] := chr( n+1 xor ord(XPasswords.acControl[n]) );
      Result.acData[n] := chr( n+1 xor ord(XPasswords.acData[n]) );
    end;
  end;

begin
  ZeroMemory(@Password, sizeof(TPassword));

  Password.acData := 'Heidi Müller';
  Password.acControl := 'DATABASE';

  Password := Moppel(Password);

  sCUCMPath := 'C:';
  AssignFile(FPassword, sCUCMPath  + '\Users\Admin-User\Desktop\cucm32.cpw');
  rewrite(FPassword);
  write(FPassword, Password);
  CloseFile(FPassword);

  showmessage(format('acData: %s'#13'acControl: %s', [Password.acData, Password.acControl]));


  // lesen
  AssignFile(FPassword, sCUCMPath  + '\Users\Admin-User\Desktop\cucm32.cpw');
  reset(FPassword);
  read(FPassword, Password);
  CloseFile(FPassword);

  Password := Moppel(Password);

  showmessage(format('acData: %s'#13'acControl: %s', [Password.acData, Password.acControl]));
end;