Article View: sci.crypt
Article #4168Re: Request for opinions: canadian cryptographic standard.
From: Phil R. Karn
Date: Thu, 24 Mar 1988 22:58
Date: Thu, 24 Mar 1988 22:58
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1845 bytes
> Given that we are not going to keep the algorithm secret, could we just > tweak an existing standard [DES?] such that it renders existing hardware > solutions for that standard incompatible with our spiffy Canadian > version? A good start. But I think I have a better idea. Surely there must be plenty of independent expertise out there that hasn't sold their souls either to the NSA or IBM (or non-US counterparts thereof). Why can't they get together and develop an informal "counterstandard" secret-key encryption algorithm as an alternative to DES? It would have the following properties: 1. Complete public disclosure of all algorithmic details and design principles. 2. A widespread consensus as to the mathematical strength of the algorithm, given point #1 above. 3. A design tailored for efficient software implementation (no "initial permutations" or similar gratuitous garbage meant to sabotage software in favor of custom hardware). Unfortunately, this seems to rule out public-key systems; that's why I said "secret-key" above. 4. A key size sufficient to rule out all brute force attacks, even those by custom hardware. If such an algorithm can be devised, I for one would be willing to implement it in portable C, tune it up, and put the code into the public domain. Comments? Phil
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!uwvax!rutgers!bellcore!faline!thumper!karn From: karn@thumper.bellcore.com (Phil R. Karn) Newsgroups: sci.crypt Subject: Re: Request for opinions: canadian cryptographic standard. Message-ID: <1009@thumper.bellcore.com> Date: 24 Mar 88 22:58:05 GMT References: <2463@geac.UUCP> <17654@watmath.waterloo.edu> <2475@geac.UUCP> <2414@unicus.UUCP> Organization: Bell Communications Research, Inc Lines: 32 Keywords: des canada nsa us Summary: alternative standards?