[11718] in cryptography@c2.net mail archive
Re: unforgeable optical tokens?
daemon@ATHENA.MIT.EDU (David Wagner)
Sat Sep 21 02:50:03 2002
X-Envelope-To: cryptography@wasabisystems.com
To: cryptography@wasabisystems.com
From: daw@mozart.cs.berkeley.edu (David Wagner)
Date: 21 Sep 2002 06:10:22 GMT
X-Complaints-To: news@abraham.cs.berkeley.edu
Barney Wolff wrote:
>Actually, it can. The server can store challenge-responses in pairs,
>then send N as the challenge and use the N+1 response (not returned)
>as the key.
But why bother? What does this add over just using crypto
without their fancy physical token? The uncloneability of
their token is irrelevant to this purpose. You might as well
just carry around a piece of paper, or a floppy disk, with a
list of keys on it.
---------------------------------------------------------------------
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to majordomo@wasabisystems.com
