Re: [TLS] Working Group Last Call for draft-ietf-tls-pwd

SeongHan Shin <seonghan.shin@aist.go.jp> Fri, 06 December 2013 02:03 UTC

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References: <3065D910-832C-47B6-9E0B-2F8DCD2657D2@cisco.com> <529C990D.3020608@gmail.com> <CACsn0cmtP_dF7N2op4DZUwR8t-fW30GmtdqQoteZ+9Y0oH3dUg@mail.gmail.com> <a4b1729af4966e99df1582943f02a0a8.squirrel@www.trepanning.net> <CACsn0cksrU2GErd6FkZPkXKXK4pSJhTbBoJ-0C-14jsM=UY2iQ@mail.gmail.com> <14e67efee74d2ec6d535f6750ed829db.squirrel@www.trepanning.net> <CACsn0c=PnB2CA8rpNtcOp6RRLNWHEPN-aN+AdWSF7FJM2wZOog@mail.gmail.com> <6d86c3be1741ed14992ec8662e0d32c7.squirrel@www.trepanning.net> <CADMpkcKTAARYK2id27T44eVyx6gF24mkt9nAkUZbSmwtEtd2gg@mail.gmail.com> <6c129fd89a9e5953ba844e4e1d1e6e98.squirrel@www.trepanning.net> <CAGZ8ZG0n7AFWc_WpxLzKbhnRxz8hkQAD-j8VDtX_GOHD5Nc6nw@mail.gmail.com> <7c8448fa356f5d764186ca62552efb1d.squirrel@www.trepanning.net> <CAEKgtqkxdYMXDNEMWGO=S1ayYuFQV3REkUJXy9vjBE4bCW_5bg@mail.gmail.com> <3895ae1cde1a695cf86767e4977c2218.squirrel@www.trepanning.net>
Date: Fri, 6 Dec 2013 11:03:15 +0900
Message-ID: <CAEKgtqm10t4F6gWRCCQDKPQ2b6x-QrnuXknD_RrS0v76_jLw_Q@mail.gmail.com>
From: SeongHan Shin <seonghan.shin@aist.go.jp>
To: Dan Harkins <dharkins@lounge.org>, "tls@ietf.org" <tls@ietf.org>
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Subject: Re: [TLS] Working Group Last Call for draft-ietf-tls-pwd
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Dear all,

It is clear from this IPR Disclosures:

         "[I]f this document...is adopted as an IETF standards
          track RFC, AIST is prepared to grant a non-exclusive
          royalty-free license for any conforming implementations
          of the adopted version (as an IETF standards track RFC)
          of this document."

The below means that AugPAKE can be used royalty-free, but other schemes in
the patent can not.

         "Needless to say, this does not mean that all the claims
          and the contents in the patent application
          PCT/JP2009/062578 are covered with the non-exclusive
          royalty-free license."

Best regards,
Shin

On Fri, Dec 6, 2013 at 10:50 AM, Dan Harkins <dharkins@lounge.org> wrote:

>
>
> On Thu, December 5, 2013 5:22 pm, SeongHan Shin wrote:
> > Dear all,
> >
> >>> Additionally, developments such as Elligator and AugPAKE hold promise
> >>> for protocols that have both security proofs *and* no IPR encumbrance.
> >>
> >>https://datatracker.ietf.org/ipr/2037/<
> https://datatracker.ietf.org/ipr/2037/>
> >
> > As in the above IPR Disclosures, AugPAKE can be used royal-free for any
> > conforming implementations.
> > The patent of AugPAKE was granted in Feb. and April of 2013 from Japan
> and
> > U.S. respectively.
>
>   No, it doesn't say "any conforming implementation" period. It says:
>
>          "[I]f this document...is adopted as an IETF standards
>           track RFC, AIST is prepared to grant a non-exclusive
>           royalty-free license for any conforming implementations
>           of the adopted version (as an IETF standards track RFC)
>           of this document."
>
> So it has to be a standards track RFC. But even that's not really
> true because it goes on to say:
>
>          "Needless to say, this does not mean that all the claims
>           and the contents in the patent application
>           PCT/JP2009/062578 are covered with the non-exclusive
>           royalty-free license."
>
> So even if it was a standards track document, AIST reserves
> the right to still go after people to whom it granted this
> "royalty-free" license. Anyone who took such a license should
> get, or get better, legal counsel.
>
>   Dan.
>
>
>


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SeongHan Shin
Research Institute for Secure Systems (RISEC),
National Institute of Advanced Industrial Science and Technology (AIST),
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