[RC5] possible third project...

Dennis Lubert plasmahh at gmx.net
Sat Jul 28 00:35:22 EDT 2001

At 11:31 27.07.01 -0500, you wrote:
>Given to the running time of the General Number Field Sieve, RSA-576

Do u have ne information about how this Number Field Sieve algorhitm works ?

>factorization should take about 13 million times the computer resources than
>RSA-512 factorization took.
>We know what the researches who cracked RSA-512 used... The question is, do
>we have enough computer power (comparatively) to make the sieving operation
>a feasible project? And will those results even be usable, given that the
>back-end, single-computer operation will be many times larger - perhaps too
>large for even the biggest supercomputers?
>         -ryan-
>-----Original Message-----
>From: Greg Wooledge [mailto:greg at wooledge.org]
>Sent: Thursday, July 26, 2001 5:08 PM
>To: rc5 at lists.distributed.net
>Subject: Re: [RC5] possible third project...
>Mathieu Gilbert (wilbrod at videotron.ca) wrote:
> > Nice ... that would be a great project, easy to understand and to
> > explain(so you can get newbie installing the client even if they don't
> > know anything about computers/math/.. not too long to complete ..
>Hah!  Factoring even the lowest of the current RSA factoring challenges is
>definitely non-trivial.  The fastest know general factoring algorithm (the
>Number Field Sieve) can be parallelized in the first stage, but then the
>results of the first stage have to be fed to a single large computer for a
>few weeks of crunching.
>(The RSA-155 challenge, which involved factoring a 155-decimal-digit number,
>required several weeks of processing on a 4-CPU Alpha box with 4 GB of RAM.)
> > Moreover dnet and someone could make some easy money.
>Believe me, any such money would be *earned*. :)
>Greg Wooledge                  |   "Truth belongs to everybody."
>greg at wooledge.org              |    - The Red Hot Chili Peppers
>http://wooledge.org/~greg/     |
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