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- Newsgroups: sci.crypt
- Path: sparky!uunet!sun-barr!ames!agate!linus!linus.mitre.org!gauss!bs
- From: bs@gauss.mitre.org (Robert D. Silverman)
- Subject: Re: RSA-129 contest
- Message-ID: <1992Aug27.111639.16325@linus.mitre.org>
- Sender: news@linus.mitre.org (News Service)
- Nntp-Posting-Host: gauss.mitre.org
- Organization: Research Computer Facility, MITRE Corporation, Bedford, MA
- References: <9208260234.AA05450@ucbvax.Berkeley.EDU> <1992Aug26.132003.5928@linus.mitre.org> <19122.Aug2700.12.0192@virtualnews.nyu.edu>
- Date: Thu, 27 Aug 1992 11:16:39 GMT
- Lines: 42
-
- In article <19122.Aug2700.12.0192@virtualnews.nyu.edu> brnstnd@nyu.edu (D. J. Bernstein) writes:
- :In article <1992Aug26.132003.5928@linus.mitre.org> bs@gauss.mitre.org (Robert D. Silverman) writes:
- :> Actually, estimating how long the general number field sieve
- :> will take with respect to the quadratic sieve CAN be done without factoring
- :> any numbers with GNFS.
- :
- :Of course---that's exactly what you and Adleman have been doing. The
- :problem is that you haven't been doing it *accurately*. Here, for the
- :benefit of sci.crypt readers, I'll run through the inaccuracies in the
- :above article.
-
- All you are doing is gainsaying my data without posting data of your own.
-
- :Your general statement about 6-7 digits corresponding to a 2x speedup
- :for 130-digit numbers is not accurate; even a casual analysis of
- :Dickman's rho function (why do you call that ``the Knuth-Schroeppel
- :function''? Dickman is the one who defined it) would show that the
-
- you are confusing the two functions. go ask Arjen about the
- Knuth-Schroeppel function.
-
- :speedup is more than 5. Why are you trying to discourage people from
- :entering the RSA-129 contest, Bob?
-
- Now this last accusation really is obnoxious, because it puts words
- in my mouth that I have never said.
-
- :You say that ``if many small primes split completely in the extension
- :field, this is beneficial to factoring the algebraic side''---but the
- :truth is that *any* small prime splitting *at all* in the extension
- :field provides a noticeable speedup. *Complete* splitting is rare.
-
- Not that rare. the frequency is 1 over the degree of the Galois closure
- of the field.
-
- So, Dan, if you can do better, why don't you display your obviously
- superior knowledge of such things by giving us your data and estimates.
- --
- Bob Silverman
- These are my opinions and not MITRE's.
- Mitre Corporation, Bedford, MA 01730
- "You can lead a horse's ass to knowledge, but you can't make him think"
-