RE: 40bit DES? & IBM Patents
Robert Moskowitz <rgm-sec@htt-consult.com> Fri, 15 May 1998 03:07 UTC
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Date: Thu, 14 May 1998 05:54:52 -0400
To: Bob Baldwin <baldwin@RSA.COM>, ipsec@tis.com
From: Robert Moskowitz <rgm-sec@htt-consult.com>
Subject: RE: 40bit DES? & IBM Patents
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At 08:55 AM 5/13/98 -0700, Bob Baldwin wrote: > Let me tell you a cautionary tale about 40 bit DES >and the IBM patent. The SET Protocol design committee >agreed to add IBM's 40 bit DES (called CDMF) as a mandatory >part of the SET protocol. IBM wrote a letter that said that >the CDMF patent would be licensed in a non-discriminatory >way for $10,000 plus a "MINOR" concession. This all seemed >reasonable, so the committee made it a mandatory feature. draft-hoffman-des40-02.txt does not use CDMF, and specifically states this at the end. I will ask the authors to add a statement (hopefully backed by IBM) that this method does not infringe on the CDMF patent, nor anyother published IPR. Robert Moskowitz ICSA Security Interest EMail: rgm-sec@htt-consult.com
- RE: 40bit DES? & IBM Patents Bob Baldwin
- RE: 40bit DES? & IBM Patents Paul Koning
- Re: 40bit DES? & IBM Patents Theodore Y. Ts'o
- Re: 40bit DES? & IBM Patents John O'Hara
- RE: 40bit DES? & IBM Patents Robert Moskowitz
- Re: 40bit DES? & IBM Patents John Tavs