[Boneh-crypto-course] Are we keeping up?
jeremy at jeremypholland.com
Mon Apr 9 22:04:59 CDT 2012
Man, I was ahead of the curve all of 2 weeks ago, then 2 weeks of work
nightmares happened, and I just finished the problem set for week 3 some
hour or two under the deadline :). So, um, yeah. *Behind*.
- Jeremy Holland
On Mon, Apr 9, 2012 at 1:08 PM, Jason Orendorff
<jason.orendorff at gmail.com>wrote:
> Where are you right now?
> I just finished watching "8-4 Tweakable encryption", about disk
> encryption systems.
> (Incidentally I found it interesting: unless there's more to it that
> Boneh didn't mention, disk encryption is not disk-wide or even
> sector-wide CPA-secure. I conclude that disk encryption must be
> intended for security against a very specific threat—the bad guys
> physically get hold of your laptop, just once. They can't read your
> data, that's the security property. And if they overwrite a particular
> block, even if they correctly guess what was there, they have no way
> of knowing what they've written.)
> (I've been surprised to hear that again and again, the systems with
> really strong security properties are not used in practice, apparently
> for performance reasons. Provably secure ciphers are not used; instead
> we use AES which we think is probably secure. We don't want secure
> systems: we want secure-enough systems.)
> Boneh-crypto-course mailing list
> Boneh-crypto-course at red-bean.com
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Boneh-crypto-course