[CODERS] Format of rc5 files (fwd)

Peter A. DeNitto denitto at llamas.net
Tue Jun 30 11:14:27 EDT 1998

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---------- Forwarded message ----------
Date: Tue, 30 Jun 1998 12:25:29 +1000
From: Christopher Fraser <chrisf at research.canon.com.au>
To: rc5help at distributed.net
Subject: Format of rc5 files


We've a bunch of FPGAs in PCI cards we're interested in
enlisting in the RC5-64 effort. Do you guys have any support for this
kind of thing?

Ideally, we would like some way of getting rc5desg to spwan a
sub-process, which it dispatches key blocks to to (e.g., an input pipe
with key blocks and config, and an output pipe with progress and

I realise you guys have a problem with authenticating key blocks which
have been processed with code other than your own. It is possible that
that part of the results we generate are a hash value of all the A & B
registers after we've encypted the plain text? That way the rc5des
program could selectively validate key blocks we've processed.

We're not expecting a huge amount of grunt. It we got machines for all
of the FPGAs currently spare going we could do maybe 14Mkeys/s (peak). 

Anyway, I'm sure you're probably been through this before.


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