You could probably use openssl to handle the encryption, since you know the data you need to encrypt, with what key, and the iv. However, if it pans out you may want to wait for someone to make something a bit easier to use - you probably don't want a brick!
I hope something comes from this, the scene is pretty much dead bar a few HB devs that release some quality dev stuff. Not too fussed about the backups but would love more homebrew...
If I'm not mistaken... with this info there should be a way (or atleast a step closer) for QA Flag instead of converting completely to DEX. It has a lot to do with EID.