Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site cca.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!decvax!cca!dee 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