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Re: Federal Key Registration Agency



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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)  ---------------->  [email protected]
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0xD37692F9  Key fingerprint =  25 7D AA 01 85 41 43 89  50 5A 33 76 F1 F1 99 67
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Anonymous ok, PGP ok.  If it's not PGP-signed, you know that I didn't write it.
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