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From: Nick Jamieson <ncj@mcs.vuw.ac.nz>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] cryptographic signatures & factotum
Date: Sun, 14 Mar 2004 18:31:05 +1300	[thread overview]
Message-ID: <200403141831.05030.ncj@mcs.vuw.ac.nz> (raw)
In-Reply-To: <00c001c40977$dfcdc820$67844051@SOMA>

> you mean a 'nonce'.  time is a really bad choice.

Time is a really bad choice *if* there is the possibility that the 
current-time source(s) can be manipulated. In this case I don't think it will 
be a problem. If general nonces are used then the work computer would need to 
keep all of the given nonces forever to prevent replay attacks.

Trade offs...

Nick


  reply	other threads:[~2004-03-14  5:31 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-03-11 23:03 steve-simon
2004-03-11 23:41 ` andrey mirtchovski
2004-03-11 23:57 ` 9nut
2004-03-12  0:03   ` George Michaelson
2004-03-12  0:09     ` boyd, rounin
2004-03-12  0:30       ` George Michaelson
2004-03-12  9:07         ` Bruce Ellis
2004-03-12 11:49           ` boyd, rounin
2004-03-12 12:14             ` boyd, rounin
2004-03-12  1:18     ` bs
2004-03-12  0:27 ` matt
2004-03-12  0:49 ` a
2004-03-12 19:52   ` rog
2004-03-12  1:02 ` Geoff Collyer
2004-03-12  9:23   ` Steve Simon
2004-03-12 13:03     ` David Presotto
2004-03-12 13:14       ` boyd, rounin
2004-03-12 13:35         ` David Presotto
2004-03-12 14:02           ` boyd, rounin
2004-03-12 16:23             ` John Kodis
2004-03-12 19:08               ` boyd, rounin
2004-03-14  3:39     ` Nick Jamieson
2004-03-14  3:53       ` boyd, rounin
2004-03-14  5:31         ` Nick Jamieson [this message]
2004-03-14  5:37           ` boyd, rounin

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