[RC5] AES (was: I think we found our next contest...)

Dave Huang khym at azeotrope.org
Fri Dec 14 15:44:52 EST 2001


On Fri, 14 Dec 2001, Martin Schroeder wrote:
> So you would need a speed increase of dnetc of 10^21. Even if the
> speed of dnet doubled every month, this would still take longer
> than this universe lasts.

Better check your math on that one :) log2(10^21) ~= 70 (actually, the
number you're looking for is log2(2^128/2^56) = log2(2^72) = 72). So if
dnet's speed doubled every month (which is quite unlikely :), it'd take
72 months. I hope the universe lasts longer than that! :)
-- 
Name: Dave Huang         |  Mammal, mammal / their names are called /
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