What level of encryption, if any, does Pages provide?

The security in Pages is not compatible with Word's.

Peter

I'm thinking about buying Pages for my new Mac, but I want to make sure

You can make sure of anything you want with

http://www.apple.com/iwork/download-trial/

Apple never gave info about the kind of encryption used by iWork applications.
There is an efficient way to protect documents :
Save them in an encrypted disk image.

Yvan KOENIG (VALLAURIS, France) mercredi 30 mars 2011 10:22:14