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From: dee@cca.UUCP (Donald Eastlake)
Newsgroups: net.crypt,net.legal
Subject: Re: RSA cryptographic algorithm patented?
Message-ID: <3523@cca.UUCP>
Date: Sat, 27-Jul-85 22:09:45 EDT
Article-I.D.: cca.3523
Posted: Sat Jul 27 22:09:45 1985
Date-Received: Sun, 18-Aug-85 01:28:36 EDT
References: <9028@ucbvax.ARPA> <3154@cornell.UUCP> <>
Reply-To: dee@cca-unix.UUCP (Donald Eastlake)
Organization: Computer Corp. of America, Cambridge
Lines: 11
Xref: watmath net.crypt:431 net.legal:2085


The reason certified implementations of DES have to be in hardware is because
it is much more tamper resistant than software.

It was part of the deal that IBM had to agree to give royalty free licenses
to DES for it to be designated a standard.

IBM uses DES on all of its internal communications lines.
-- 
	+1 617-492-8860		Donald E. Eastlake, III
	ARPA:  dee@CCA-UNIX	usenet:	{decvax,linus}!cca!dee