[RC5] RC5/64 completion time by Deep Gene

Colin L. Hildinger colin at ionet.net
Mon Dec 27 22:08:52 EST 1999

I don't think PGP requires brute force.  Someone correct me but can't
it be factored?  As for RC5, nobody (ouside maybe the NSA) knows how to
factor it so brute force is the only method available...

On Fri, 24 Dec 1999 15:51:18 -0700, Greg Andrews wrote:

>I don't know too much about the specifics of Deep Gene, but since it's
>designed for genes, I think it would probably take some modifying to let it
>do RC5.  Even considering it's power (a million processors) is maybe only
>double or triple (quad maybe?) that of d.net, I think it would still take a
>while (months/years) to complete, or even just to reach 50%
>Terrorists?  Well, were talking months/years to crack 56 bit encryption,
>which is considered weak by many cryptologists.  If these terrorists wanted
>to crack the encryption used for secure transactions through browsers (128
>bit, or 56 bit  for international versions) or PGP encryption (1024-4096
>bits) they would need a few thousand/million Deep Genes to crack it in any
>reasonable amout of time.

Colin Hildinger
Design Engineer
Enviro Systems, Inc.

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