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Re: In case y'all didn't catch it yet...
From: Bart.Lansing () kohls com
Date: Wed, 16 Feb 2005 13:19:54 -0600


Valdis.Kletnieks () vt edu wrote on 02/16/2005 12:08:14 PM:

On Wed, 16 Feb 2005 09:27:45 CST, Bart.Lansing () kohls com said:

Fact:  If the paper and method are sound...the sky STILL is not 
falling 
(although it will be raining pretty darned hard)...2^69 
operations...to 
get a collision...how many hours of current gen cpu cycles?? (some 
notes 
from the blog thread postulate a 4 ghz machine would need 4000 
years...4000 CPU@ 4 ghz ea ...1 year.)

And if it's a crew with a 400K machine zombie net, 3 days.  Maybe a week 
given
that most of the boxes are consumer-grade machines.

Consider it a "given" that there's at least one "somebody" *already* 
situated
in that target space...

Vladis, point taken...but to be picky, that's 400k machines with the 
process forground-tasking, cpu at 100%, machine online 7x24, and at the 
very state of the consumer PC art (remembering that we were talking about 
an as-yet not readily available 4ghz machine capable of 2^32 ops/sec). As 
effective as botnets are, clocking the cpu to its knees is going to tip 
even clueless pc owners off....all to "maybe" cause 1 collision...assuming 
of course, that their solution even lends itself to distributed processing 
at all.

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