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Re: Borders *are* transparent
At 02:11 PM 7/22/96 -0700, Lucky Green wrote:
>At 4:50 7/23/96, Paul Foley wrote:
>>"Peter Trei" <[email protected]> wrote:
>>
>> Any one up for a distributed brute force attack on single DES? My
>> back-of-the-envelope calculations and guesstimates put this on the
>> hairy edge of doability (the critical factor is how many machines can
>> be recruited - a non-trivial cash prize would help).
>>
>>Not quite sure what you mean by "doability" -- it's obviously doable,
>>it just depends how long you want to wait.
>>
>>I'm in.
>
>Same here. I think it is about time for another full scale hack. Breaking
>DES would help get our message more than breaking 40bit RC-4 ever did.
So how many keys can (for example) a 100 MHz Pentium try per second? I
assume it's known-plaintext. Even at a million per second, that's still
somewhere around 35 billion machine-seconds (average) to find the solution.
1000 systems operating, and it's around a year to a solution. Doable, but
not all that practical.
What about the possibility of using DSP's? Is there any brand of 28.8 K
modem which uses a "standard" DSP and EPROM firmware? Such a beast might be
the easiest way to get a large amount of CPU horsepower operating
independently of the host computer. DSP's are optimized to execute a large
number of instructions with little I/O needs.
Jim Bell
[email protected]