[Quekid5]

> Remember that the dataset is often going to be small, and frequently will contain known or easily guessed strings.

This is why modern crypto is designed to be resistant to prefix attacks, rainbow attacks, why CBC is considered a good idea, etc. soo....

Yeah, you're being paranoid about the wrong things, I think.

EDIT: FWIW, I was being a bit cheeky with the Fine(TM) thing, but if you get the "process" bits about encrypting the thing you send to the browser (and will be returned to you) right, you should really be in a position about as good as if the encryption itself had been compromised.