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

["Dan Harkins" <[e-mail]>]

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.