[45297] in Cypherpunks
Re: Timing Cryptanalysis Attack
daemon@ATHENA.MIT.EDU (Simon Spero)
Tue Dec 12 23:44:17 1995
Date: Tue, 12 Dec 1995 23:17:30 -0500 (EST)
From: Simon Spero <ses@tipper.oit.unc.edu>
To: "Perry E. Metzger" <perry@piermont.com>
Cc: cypherpunks@toad.com
In-Reply-To: <199512121306.IAA02006@jekyll.piermont.com>
On Tue, 12 Dec 1995, Perry E. Metzger wrote:
>
> Go ahead and trust that no one can do it, then. Considering that NTP
> can synch up clocks over the net with astonishing accuracy with
> multiple probes, it would be hard to believe that you couldn't
Perry - I don't think NTP goes down to the sort of resolution that
appeared to be where the signal is here, and for quantisation reasons, I
don't think it can work over a public routed internetwork. I'm still open
to having my mind changed here; my network weenie gut instincts tell me
that routing is too non-random for the signal to propogate.
[I may have misread the paper, but the accuracy required seemed to be on
the order of 10-100 usecs; if I've got that wrong, could someone mail me
an OOM to be working with]
Simon
