Article View: sci.crypt
Article #3715Re: public key encryption and RSA patent status
From: Tim Smith
Date: Fri, 18 Sep 1987 23:39
Date: Fri, 18 Sep 1987 23:39
40 lines
2543 bytes
2543 bytes
In article <25@nl.cs.cmu.edu> mlm@nl.cs.cmu.edu (Michael Mauldin) writes:
< I agree with jbuck@epimass's assessment of the situation. As I
< remember it, you can't patent something that can be done (in principle)
< by a person using pencil and paper.
You can patent anything that you can convince the patent office to
issue you a patent for.
The book "Software Law - A Primer" ( or something like that ) has
some examples of patents that have been granted that are similar
to RSA.
For example, there was some manufacturing process that involved the
use of feedback ( if I remember correctly ). Someone came up with
the idea of using a specific function to control the feedback.
It was a fairly simple function, too. One that shows up in other
things. Something like y=exp(-x).
Their patent was not an attempt to patent the exponential function.
Their patent was an attempt to patent the use of an exponential
function as a key step in making a specific type of item.
The patent was granted. This did not mean that other people could
not use exponential functions. It just meant that other people
could not use them in the same way when making the same type of
product as the patent holder.
I suspect that the RSA patent would be similar. Anyone can use
the functions that RSA uses for things other than a public key
cryptography system. It would only be the specific use that
would be covered by the patent.
Disclaimer: What do I know? I am just a person who read a book
that covered this. Consult a real lawyer before taking anything
I say seriously!
--
Tim Smith, Knowledgian {sdcrdcf,uunet}!ism780c!tim
tim@ism780c.isc.com
"Oh I wish I were Matthew Wiener, That is who I truly want to be,
'Cause if I were Matthew Wiener, Tim Maroney would send flames to me"
Technical Details
Message-ID:
<7335@ism780c.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!bloom-beacon!think!ames!sdcsvax!ucbvax!hplabs!sdcrdcf!ism780c!timReferences:
<1372@osiris.UUCP> <441@polyslo.UUCP> <686@sugar.UUCP> <1490@epimass.EPI.COM> <25@nl.cs.cmu.edu>Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!bloom-beacon!think!ames!sdcsvax!ucbvax!hplabs!sdcrdcf!ism780c!tim From: tim@ism780c.UUCP (Tim Smith) Newsgroups: sci.crypt,comp.misc Subject: Re: public key encryption and RSA patent status Message-ID: <7335@ism780c.UUCP> Date: Fri, 18-Sep-87 19:39:08 EDT Article-I.D.: ism780c.7335 Posted: Fri Sep 18 19:39:08 1987 Date-Received: Sun, 20-Sep-87 07:10:37 EDT References: <1372@osiris.UUCP> <441@polyslo.UUCP> <686@sugar.UUCP> <1490@epimass.EPI.COM> <25@nl.cs.cmu.edu> Reply-To: tim@ism780c.UUCP (Tim Smith) Organization: Interactive Systems Corp., Santa Monica CA Lines: 40 Keywords: RSA patent pencil paper bgofus