You can write your own bitwise encryption (as I did), or there are plenty of encryption DLL's floating around the Game Maker Forum that are very easy to use.
Is that easy like replacing strings such as
a = $
b = F
c = *
etc.
No, thats a substitution cipher. But in general XOr is just as easy, its basically about flipping the bits of a given string of data, based on the bits of a key code. Most languages have a operator that does the job.
That can still be used as a decent encryption though right?
No there is a huge floor in XOr encryption, namely the repition of a key, and the fact that you can decypt parts of the key pieces by piece, you don't have to decypt it as a whole (so for example you can brute force different words to see if they are part of the key). It leaves it very vulnerable, its not remotely secure.
However all that said XOr is usually good enough to put off most script kiddies, but anyone who knows what they are doing will be able to break it in no time.
And if your talking about using a substitution cipher as 'decent encryption', I think I'll just go and laugh somewhere
. I'm sorry but substitution ciphers are one of the easiest encryption methods to break, hence the reason why it is commonly use by pre-schoolers.
