"More recently, Michael Wiener decided to design a brute-force cracking
machine. (He designed the machine for DES, but the analysis holds for
most any algorithm.) He designed specialized chips, boards, and racks.
He estimated prices. And he discovered that for $1 million, someone
could build a machine that could crack a 56-bit DES key in an average
of 3.5 hours (results guaranteed in 7 hours). And that the price/speed
ratio is linear [Table of cost/speed estimates deleted]. Remember
Moore's Law: Computing power doubles approximately every 18 months.
This means costs go down a factor of 10 every five years; what cost
$1 million to build in 1995 will cost a mere $100,000 in the year
2000. Pipelined computers might do even better."
-- Jeff Simmons jsimmons@goblin.punk.netHey, man, got any spare CPU cycles? Help crack DES. http://www.frii.com/~rcv/deschall.htm