septillion operations per second
Ian Goldberg
iang at abraham.cs.berkeley.edu
Thu Jun 21 10:58:08 EDT 2001
In article <200106202050.f5KKoqE10754 at valis.black-ice.org>,
Mike Brodhead <mkb at black-ice.org> wrote:
>take a peek at the chapter on key lengths in Schneier's Applied
>Cryptography. it is an entertaining read. in short, he makes the
>case that computers as we understand them simply cannot conduct brute
>force attacks against 128-bit or larger semetric keys. (i won't
>repeat his explanation here.)
Actually, his explanation (which involves the energy required to erase
bits) isn't correct; look up "reversible computing", which is a way
to do computations at lower energy than the limit he proposes.
- Ian
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