[11721] in cryptography@c2.net mail archive
Re: unforgeable optical tokens?
daemon@ATHENA.MIT.EDU (Derek Atkins)
Sat Sep 21 10:07:26 2002
To: eli+@cs.cmu.edu
Cc: crypto list <cryptography@wasabisystems.com>
From: Derek Atkins <derek@ihtfp.com>
Date: 21 Sep 2002 09:24:49 -0400
In-Reply-To: <20020921063415.6F76030752@lion.ninthwonder.com>
eli+@zimbs4.srv.cs.cmu.edu writes:
> I can't dig up the memory, but I think I heard of a similar idea --
> random structure in transparent solid, difficult to copy -- used in
> some kind of tag or seal for nuclear security. Can anyone remind me
> what this might have been?
This isn't security -- this is a small-form-factor physical ROM. This
"read-only data crystal". The fact that they cannot be duplicated
easily just means that you cannot use these tokens for real data
storage. Imagine if they _were_ replicable.. Imagine keeping a
terabyte of backup data on one of these tokens!
> Eli Brandt | eli+@cs.cmu.edu | http://www.cs.cmu.edu/~eli/
> (finished Ph.D., woohoo; looking for good work in the Seattle area)
-derek
PS: My Master's degree is from the Media Lab, so I can vouch for the
fact that reasonable work is done there ... ;)
--
Derek Atkins
Computer and Internet Security Consultant
derek@ihtfp.com www.ihtfp.com
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