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RE: 40bit DES? & IBM Patents
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
References: