Hiscores are nothing fancy, but I really need to be able to persist them between games, othewise they're not much use. How have others done this?
My first thought would be to write the output as text ('cos then its nice and easy to parse) and encrypt it somehow, but I'm not sure if theres any built-in encryption that I can lay my hands on.
Second thought would be to stick the text into a zip file and stick a password on the zip, but I can't see any functionality for using passwords on zip files
Lastly (and weakest) would be just to write the output as binary and hope people can't really be bothered looking at it closely...