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Date: Wed, 1 Mar 1995 05:13:27 -0500
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From: "Charles M. Hannum" <mycroft@ai.mit.edu>
To: jkh@freefall.cdrom.com
Cc: pst@Shockwave.COM, hackers@freefall.cdrom.com, security@freefall.cdrom.com
Subject: Re: key exchange for rlogin/telnet services? 
Sender: security-owner@FreeBSD.org
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According to someone Very Well Versed (tm) in this issue:

D-H falls under the broad "Hellman-Diffie-Merkle" patent, which
(according to PKP) claims all of public-key cryptography.  That patent
expires in 1997.  The RSA patent expires in 2000.  Both patents are
controlled by PKP (Public Key Partners, a/k/a Jim Bidzos).

The RSA "FAQ About Today's Cryptography", available off of
http://www.rsa.com/, has a little more info about the various patents.
I'm sure the various cypherpunk pages on the Web have pointers, too.


P.S.  Your message was extremely rude.