Delphi: Prevent method names from appearing in exe

Question

I am writting some class, that is for handling security in my exe (checking serials, trial date check etc). After I compile exe even in Release build with all debug and RTTI generation turned off, when I open my exe in NotePad and search method name in a raw data, I can see all the name of the methods, that assemble my class. There is no published members in a class btw.

This is bad for protection. Is there any way to tell Delphi not to store method names in exe? Why storing them at all if there is no RTTI needed and no COM exposion? Is there any compiler option responsible for this?

P.S. I just noticed this little fact. So, may be ANY method of ANY class in target exe is stored inside exe in text form.

UPDATE: this is caused by extended RTTI being turned on by default for all classes in Delphi 2010.

Answer 1

If you are asking about the extended RTTI in Delphi 2010, it can be switched off by

{$RTTI EXPLICIT METHODS([]) PROPERTIES([]) FIELDS([])}

see also docwiki.

Answer 2

What you probably will see is your form definition as a resource (eg the binary represetation of the DFM files of your project).

If you don't want to show these (for the serial info screen etc) you shouldcreate these forms "in code". Eg create a TForm, place a TButton and TEdit onto it, attach the event handlers in code.

To do this in a handly way: start with a form and create the DFM. When vieing the form, choose View as text from the context menu and you will know what things you should copy into code. And make sure NOT to place any varaiablerefernces under de published (always put public/protected/private as the first line within your class definition.

Answer 3

Also strip relocations, take up the following in the project's dpr file:

{$IFDEF RELEASE}
  // Leave out Relocation Table in Release version
  {$SetPEFlags IMAGE_FILE_RELOCS_STRIPPED}
{$ENDIF RELEASE}

Answer 4

... and don't forget to turn off "td 32 debug info" (in older versions) or debug info in the linker tab in later ones.