[14244] in cryptography@c2.net mail archive
Re: Who is this Mallory guy anyway?
daemon@ATHENA.MIT.EDU (Matt Crawford)
Mon Sep 22 22:40:50 2003
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
Date: Mon, 22 Sep 2003 17:13:40 -0500
From: Matt Crawford <crawdad@fnal.gov>
In-reply-to: <3F6F615A.98F5B811@systemics.com>
To: iang@systemics.com
Cc: crypto <cryptography@metzdowd.com>
> Well, that's the question - is Eve allowed to
> forward packets, in the act of listening, or
> is that the Mallory's job? I don't know.
You can't measure a single-particle state without at least some chance
of destroying the state. (Even quantum non-demolition methods affect
the measured system a bit.) So you can't have a purely passive Eve.
Perhaps "Quentin" is the Quantum Eavesdropper who makes his optimal
tradeoff between gathering the most information and being the least
detectable.
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