thats simple:
if you "crypt" your script like that you can copy all your model files or so to any temporary folder and delete the first byte of each file. This value of byte is defined in your script. so you can hide all files, because no one can restore the files. you don't have to use exactly on byte, you can also you 40 bytes or so with a randomly generated start and a mathematic context of the following bytes.
its very simple, but it works nearly save