Quite silly. If your trying to make the file unreadable/unusable by the people obtaining your program that is hardly a secure way to do it.
I would suggest encryption, there are plenty algorithms around.
EDIT:
Seek to a positon in the file.
Write a bunch of nonsense and close the file.
When loading:
Simply way would be to seek over the data, as mentioned before, then save a temporary file and load it back in with your mesh loader, maintaining the buggered file format of the original.
I would suggest encryption, there are plenty algorithms around.
EDIT:
Is it possible? and how?
Yes..Seek to a positon in the file.
Write a bunch of nonsense and close the file.
When loading:
Simply way would be to seek over the data, as mentioned before, then save a temporary file and load it back in with your mesh loader, maintaining the buggered file format of the original.