security modifications to current PCs
Jonathan Thornburg
jthorn at aei.mpg.de
Fri Dec 2 09:43:49 PST 2005
On Thu, 1 Dec 2005, Travis H. wrote:
> Is it possible to implement most block ciphers in FPGAs? It'd be nice
> to have a bus-mastering crypto co-processor device to do, say, disk
> encryption without requiring CPU help, but I want to be able to update
> it to new algorithms as new attacks against the cipher appear. I use
> some disk encryption stuff on a dual processor machine and it's still
> slow. The load climbs to 10 or 12 all too easily, then stuff becomes
> unresponsive (perhaps because swap is one of the things I'm
> encrypting).
Have you tried the swap-encryption option in OpenBSD? According to
http://www.openbsd.org/papers/swapencrypt.ps
the performance is pretty good.
ciao,
--
-- Jonathan Thornburg <jthorn at aei.mpg.de>
Max-Planck-Institut fuer Gravitationsphysik (Albert-Einstein-Institut),
Golm, Germany, "Old Europe" http://www.aei.mpg.de/~jthorn/home.html
"Washing one's hands of the conflict between the powerful and the
powerless means to side with the powerful, not to be neutral."
-- quote by Freire / poster by Oxfam
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