Which security frameworks and tools can I use on the iPhone to secure my data?

Which encryption tools / methods / frameworks does the iOS SDK provide? Are the开发者_如何学Pythonre third party solutions which I could use in my app?

I'll be using Core Data and would like to encrypt sales details so if someone finds my lost iPhone he/she can't see how much (or how little ;-) ) my company makes.

From what I know, iPhone OS provides some framework about security.
For example, if you want to store a password, an username or other data encrypting them, you can use keychain...

You can find more infos here: https://developer.apple.com/library/ios/navigation/index.html#section=Topics&topic=Security