I'm writing some licensing software & need to encrypt files on customers' computers so they can't read them, but be able to decrypt them at run time.
This all needs to be able to happen on Windows, Linux, and/or IRIX, and if I had my druthers, it would be able to work cross-platform across a network (but that's not necessary).
I've never really done any encryption, so I'm reading up on it now, but if anyone can offer a word or two of advice, that would save me some time.
any good books? websites? other forms of valuable information?