From: smb@research.att.com
Date: Thu, 17 Jun 93 14:28:09 PDT
To: Timothy Newsham <newsham@wiliki.eng.hawaii.edu>
Subject: Re: fast des
Message-ID: <9306172128.AA10049@toad.com>
MIME-Version: 1.0
Content-Type: text/plain


The DEC gigabit/second DES chip was based on the FURY VSC15K gate array
from Vitesse.  It's a gallium arsenide device.

The full paper is ``A High-speed DES Implementation for Network
Applications'', by Hans Eberle, SRC Research Report 90, DEC Systems
Research Center.  Abstracts are (apparently) online in
pub/DEC/srcabstracts.list, on gatekeeper.pa.dec.com.  You can get
hard-copy by sending email to src-report@src.dec.com.

Oh yeah -- he gives the search time as 16 days, for about $1M in DES
chips alone, without any support circuitry.  The chips are estimated
to cost $300 apiece.  His chip is well-suited for DES-cracking because
it has a separate key-loading port, so you can change the key each
cycle without slowing down the pipeline.