[45204] in Cypherpunks
Re: Timing Cryptanalysis Attack
daemon@ATHENA.MIT.EDU (Peter Monta)
Mon Dec 11 20:23:08 1995
To: cypherpunks@toad.com
Cc: Matt Blaze <mab@crypto.com>
In-Reply-To: Your message of "Mon, 11 Dec 1995 14:06:55 EST."
<199512111906.OAA01139@crypto.com>
Date: Mon, 11 Dec 1995 16:56:10 -0800
From: Peter Monta <pmonta@qualcomm.com>
Matt Blaze writes:
> Of course, this works against a remote adversary, but not against one
> on the same machine who can look at actual CPU consumption (which doesn't
> increase when the target is blocked).
Maybe this is a good reason to spinwait, rather than sleep, until
the timer expires. It would be pretty subtle to distinguish that
from "real" computation.
Peter Monta
