Re: copacobana

Bas Steendijk wrote:
> http://www.copacobana.org/
> 
> this is a low cost ($10000) device which uses 120 FPGA's to do parallel 
> computation work which uses little communication, such as brute force 
> searches. it can crack DES in 7 days average at 2^35 attempts per 
> second. it can likely be programmed to assist in hashcash stamp 
> generation, which would be interesting for spammers.

this is basically the same problem that we face today with zombies.  It's a 
question of does the opportunity cost as defined by the revenue per message and 
the message rate support the cost of running this box and re-architecting your 
zombie network to ask for stamps from a central server.  Another way of looking 
at the problem is asking which is more efficient and cost-effective, a dedicated 
computation engine or a distributed stamp generation engine (i.e. a bunch of 
zombies)
-- 
Speech-recognition in use.  It makes mistakes, I correct some.