Article View: sci.crypt
Article #435Question about DES s-boxes.
From: Mike Rosing
Date: Thu, 06 Aug 1992 03:56
Date: Thu, 06 Aug 1992 03:56
30 lines
1900 bytes
1900 bytes
Howdy, I'm totally new to this topic so please bear with me. I've read several Springer-Verlag "lecture notes in computer science" including "Modern Cryptology A Tutorial" and a few of the Crypto' and Eurocrypt articles. Crypto '89 has an article called "Good S-Boxes are Easy to Find" by C. Adams and S. Tavares. I'd like to improve the DES routine I've got working already by substituting the s-boxes with some of the ideas described in this article. The article states that there are 60 s-boxes which meet the criteria of 1) bijection, 2) nonlinearity, 3) strict avalanche, and 4) independance of output bits. Only 3 of these are listed in the article and I don't have access to the J. of Cryptology to see if the authors actually got to publish a more detailed description. Does anyone have a listing of these 60 "perfect" s-boxes? Also, the article states "A simple way to extend DES in the short term might be to standardize a list of good s-boxes and have as part of the key the choice of s-boxes to use." Has anyone done this and would you mind telling me how you used the key to pick the s-boxes? Finally, does anyone know how to get email to the above authors? They are listed as being from Queen's University in Kingston Ontario. Thanks for any replies! Patience, persistence, truth, reality: mgr@anhep2.hep.anl.gov Dr. mike UUCP: uunet!pyramid!cdp!mrosing IMI, P.O. BOX 2242, Darien IL 60559 bitnet: mrosing@igc.org
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Path: arc1-ca.pugleaf.net!sparky!uunet!sun-barr!ames!sgi!cdp!mrosing From: Mike Rosing <mrosing@igc.org> Newsgroups: sci.crypt Date: 05 Aug 92 20:56 PDT Subject: Question about DES s-boxes. Sender: Notesfile to Usenet Gateway <notes@igc.org> Message-ID: <1465900002@igc.org> Nf-ID: #N:cdp:1465900002:000:1508 Nf-From: cdp.UUCP!mrosing Aug 5 20:56:00 1992 Lines: 31