[IP] more on ARMSTRONG LECTURE on Quantum Crypto and Optical Networks (Forwarded)
Begin forwarded message:
From: Joe Touch <touch@xxxxxxx>
Date: September 19, 2005 1:53:41 PM EDT
To: dave@xxxxxxxxxx
Cc: smb@xxxxxxxxxxxxxxx
Subject: Re: [IP] ARMSTRONG LECTURE on Quantum Crypto and Optical
Networks (Forwarded)
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Dave and Steve,
So far I've been very curious about all the assertions about quantum
comm. supporting key distribution, since quantum comm presumes
pre-distributed keys for state verification, at least as a bootstrap.
See:
Why Quantum Cryptography?
Kenneth G. Paterson, Fred Piper, Ruediger Schack (Royal
Holloway, University of London
in Quantum Physics e-print archive, June 2004
Abstract:
Quantum Key Exchange (QKE, also known as Quantum Key Distribution or
QKD) allows communicating parties to securely establish cryptographic
keys. It is a well-established fact that all QKE protocols require that
the parties have access to an authentic channel. Without this
authenticated link, QKE is vulnerable to man-in-the-middle attacks.
Unfortunately this fact is frequently overlooked, resulting in
exaggerated claims and/or false expectations about the potential impact
of QKE. In this paper we present a systematic comparison of QKE with
traditional key exchange protocols in realistic secure communication
systems.
http://arXiv.org/abs/quant-ph/0406147
I've heard various assertions about 'key amplification', 'pad
regeneration', etc., but at the end of the day it seems that the quantum
system is only as good as the conventional authentication key it started
with, AFAICT.
I'd be interested if any others on IP have thoughts on this...
Joe
David Farber wrote:
is it webcast?
Begin forwarded message:
From: "Steven M. Bellovin" <smb@xxxxxxxxxxxxxxx>
Date: September 14, 2005 6:35:23 PM EDT
To: cryptography@xxxxxxxxxxxx
Subject: [Colloquium] ARMSTRONG LECTURE on Quantum Crypto and Optical
Networks (Forwarded)
Date: Wed, 14 Sep 2005 18:30:22 -0400 (EDT)
From: Dan Rubenstein <danr@xxxxxxxxxxxxxxx>
To: colloquium@xxxxxxxxxxxxxxx
The Department of Electrical Engineering at Columbia University
invites
you
to attend
THE ARMSTRONG MEMORIAL LECTURE
Monday, September 19 - 3:00pm
Davis Auditorium (Schapiro/Host)
Host: Professor Osgood
"Unbreakable Secret Key Distribution?
Quantum Cryptography and Optical Networks"
by
Matthew S. Goodman, Ph.D.,
Chief Scientist and Telcordia Fellow, Telcordia Technologies &
Laboratory
for Telecommunications Sciences Red Bank, NJ and Adelphi, MD
Abstract:
Manifestly quantum mechanical behavior has had tremendously important
implications for the development of modern technology. In this
talk we
explore the impact of recent ideas and new approaches that quantum
information is having on future secure communications for high
performance
optical networks. The talk will concentrate on quantum
cryptography, which
offers the promise of unconditional security for communications, and
complements existing mathematically based cryptography, which is
applied at
higher networking levels. The talk will review the rapid progress
in this
field as well as some very recent experimental results from the
Telcordia
research group and its collaborations. We will describe the impact
that
this work is having on optical networking research and some early
commercial activities and will speculate on its broader commercial
implications.
Light refreshments will be served. We look forward to seeing you
there!
_______________________________________________
Colloquium mailing list
Colloquium@xxxxxxxxxxxxxxx
http://lists.cs.columbia.edu/mailman/listinfo/colloquium
----------
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb
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