oh damn nevermind then
Then maybe we could try for more advanced methods of encryption?
Pedantic Thing
Base64 isn't encyption. It's just an encoding method.
Sure. What do you have in mind?
I think recreating Gzip / Deflate / Brotli would be a good challenge!
Gzip! Yes! (also, tar)
I never actually said it was
is that not just the default file zipping compression method but slightly better and under a different name?
i haven't used gzip much in the past but I'm pretty sure it offers some form of encryption (password, private/public keys maybe?). If I were writing an encryption method in Snap! I'd prefer private and public keys so I could, for example, encrypt something in my game that isn't 100% finished yet and decrypt it with my private key later to work on it. I haven't read many of the other posts related to this so I'm not sure what direction you're taking this, but I am interested in helping 
I don't think so. tar was first made archiving stuff on spools of magnetic tape.[1]
oh, interesting