I have an idea for an addon for World of Warcraft which would basically be a minigame within the game itself. Eventually, I'd like to have players be able to compete against each other directly. The game would have some RPG-like elements, particularly statistics and abilities, which it would be undesirable for the end users to modify.
So the fact that this is a client-side script, where everything (logic and data storage) are all in flat text files, means that it's impossible for me to truly secure things. But I'd like to at least make it non-trivial to alter things, e.g. so that you can't just open up a file in notepad and type in 'Strength = 256'.
I'm looking for any ideas on how I might obfuscate the data, preferably something which is easy to implement as it's not really what I feel like spending my time on, but probably more sophisticated than ROT-13.
As an example, one idea I had, which I'm not sure if it's feasible (have never made an addon for WoW before) is to serialize the data in base-64.