Help with encrypting files

[Arcaico976]

Hi guys.

So, here is the thing. I made a game and I want to encrypt the files. So I did it, put them all in a rpa file named archive, as I understand this is the correct way of doing it. It works fine but my problem is that I want to make some mods for my own game and later on I plan to make updates for the game. Some of the mods just change one line of code. Yet in order to install it the player has basically to download the whole game again, since all the original files are encrypted in one single file.

I tried to separate the .rpyc file from images and videos by editing the options file with the following line:

build.classify('game/**.rpyc', 'scripts')

Yet didn't work.
Could some gentile sould explain me how to do it?
Thanks.