From: David Rosoff <drosoff@arc.unm.edu>
Date: Sat, 22 Jun 1996 18:04:00 +0800
To: William Knowles <jimbell@pacifier.com>
Subject: Re: Federal Key Registration Agency
Message-ID: <1.5.4.16.19960622015728.32e7eb0e@arc.unm.edu>
MIME-Version: 1.0
Content-Type: text/plain


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At 03.05 AM 6/21/96 -0700, William Knowles wrote:
>On Thu, 20 Jun 1996, jim bell wrote:

>> If done in parallel, on a dedicated, 200 MHz custom chip, my WAG says that 
>> such a chip could try, and statistically analyze the results of 10 million 
>> DES codes per second.   (it would do the decrypts on a number of parallel 
>> DES blocks, and look for typical ASCII code pattern probabilities, again all 
>> in parallel.)  A typical cracking system might have 100 boards of 100 such 
>> chips, or perhaps a 100 billion such decrypts per second.  Checking the 
>> keyspace would require 2**19 seconds, or about a half million seconds, or 6 
>> days.  Average decrypt, of course, in 3 days.

Wasn't there a crypto paper three or four years ago that said if custom chips
were used, a million dollar custom machine could crack a DES key in less
than a day?

===============================================================================
David Rosoff (nihongo o sukoshi dekiru)  ---------------->  drosoff@arc.unm.edu
For PGP key 0xD37692F9, finger drosoff@acoma.arc.unm.edu
0xD37692F9  Key fingerprint =  25 7D AA 01 85 41 43 89  50 5A 33 76 F1 F1 99 67
Non-technical beginner's guide to PGP ---> http://www.arc.unm.edu/~drosoff/pgp/
Anonymous ok, PGP ok.  If it's not PGP-signed, you know that I didn't write it.
=== === === === === === === === === === === === === === === === === === === ===
"Truth is stranger than fiction, especially when truth is being defined by the
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