Article View: sci.crypt
Article #3718Re: public key encryption and RSA patent status
From: Tim Tessin
Date: Mon, 21 Sep 1987 18:38
Date: Mon, 21 Sep 1987 18:38
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In article <25@nl.cs.cmu.edu> mlm@nl.cs.cmu.edu (Michael Mauldin) writes:
>
> Several months ago I posted a request asking just what about RSA the
> MIT patent covers. I got no answers.
> Not wanting to spend the time or money to ask the patent office for a
> copy of the patent, I hoped I could find out on the net. Does anyone
> know specifically what the Patent was granted for/what they claimed?
>
> Michael L. Mauldin (Fuzzy)
Well, I am having cracker-jack Government patent lawyers take a look
at the RSA Patent. The patent grants some rights to the U.S.
Government, so my answer may not be for everyone. I have a copy
of the patent, but I can't really read it (you need a recursive
descent parser to wade through some of the clauses :-)). They seem
to be patenting the "implementation" of an algorithm for a specific
purpose (cryptography). The example posted earlier on the use
of exp() for feedback loops is probably very similar.
I'll let ya'll know what I find out.
Tim Tessin - Lawrence Livermore National Laboratory
Phone: (415) 423-4560 / 422-8971
ARPA: tjt@lll-tis.ARPA
UUCP: {ihnp4,dual,sun}!lll-lcc!lll-tis!tjt
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!mit-eddie!ll-xn!ames!lll-tis!lll-risky!tjt From: tjt@lll-risky.arpa (Tim Tessin) Newsgroups: sci.crypt,comp.misc Subject: Re: public key encryption and RSA patent status Message-ID: <104@lll-risky.arpa> Date: Mon, 21-Sep-87 14:38:30 EDT Article-I.D.: lll-risk.104 Posted: Mon Sep 21 14:38:30 1987 Date-Received: Tue, 22-Sep-87 07:11:06 EDT References: <1372@osiris.UUCP> <441@polyslo.UUCP> <686@sugar.UUCP> <1490@epimass.EPI.COM> <25@nl.cs.cmu.edu> Reply-To: tjt@lll-risky.arpa.arpa (Tim Tessin) Lines: 25 Keywords: RSA patent pencil paper bgofus