Is there an Encryption class? What am I missing?

@Leo - what are using encryption for?  I've almost never used that library myself so trying to understand use cases.

Storing passport numbers in a database. Encrypting cookies in a referral system. And whatever else a client may ask of me to implement in a forex website (or something to do with money, the potential client is still working on what exactly I'm supposed to build). I also agree that a class doesn't really need to go to CI, especially with encryption evolving all the time, and not really needed on most sites.

You can see things I made with codeigniter here: itart.pro its not overly impressive as I have very little time to learn.