encrypting something

[jsprogrammer]

I need help encrypting a video game. It needs to be strong encryption, and work on binary files. I also need a De-encrypt program. It needs to work upon activation of another c++ program by giving a command. It needs to encrypt several files. Is this possible?

[Athar]

That's not very specific. Sounds like you're looking for an archiver. Most archive types like zip and 7z support encryption and there are also command line tools for compression(+encryption) and decompression if needed.

[Disch]

I'm not sure why you'd want to encrypt game files anyway. If they're easily modified, then it makes game mods more likely which increases the lifespan, replayability, and popularity of your game.

I might even go so far as to publically document my data file formats for game releases. Releasing tools might not hurt either.