Hi,
I've done a quick test, and it seems to be some problem with the decrypter. It works without encryption, but the assets aren't returned when using a key. At this very moment I can't fix it, but I'll push a fix as soon as I have a moment -it shouldn't be difficult-. As I sad, I have now more knowledge about cypher than when I started the project. Sorry about it, and thanks for your understanding!