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Re: [ipwave] About OCB patch for ath10k driver on linux

John Kenney <jkenney@us.toyota-itc.com> Thu, 28 May 2020 05:47 UTC

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References: <c52d05be-5937-c445-f1cd-4c9094bed929@gmail.com> <5544727E-77F4-486C-A410-0B152589E9E3@nohats.ca> <8c023d60-63c0-27bf-58be-756deee93797@gmail.com> <alpine.LRH.2.21.2005272128450.18445@bofh.nohats.ca>
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From: John Kenney <jkenney@us.toyota-itc.com>
Date: Wed, 27 May 2020 22:47:25 -0700
Message-ID: <CAP6QOWQpvVhrwXyGR3=Lw-1rOmREFTG98WsSVYhkJoswc39Oww@mail.gmail.com>
To: Paul Wouters <paul@nohats.ca>
Cc: Alexandre Petrescu <alexandre.petrescu@gmail.com>, its@ietf.org
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Subject: Re: [ipwave] About OCB patch for ath10k driver on linux
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I think there is some confusion about the abbreviation OCB. For DSRC it
stands for Outside the Context of a BSS.  The Wikipedia link below is for
something called Offset Codebook Mode.  I don’t know what that is, but it
has nothing to do with DSRC.

On Wed, May 27, 2020 at 6:33 PM Paul Wouters <paul@nohats.ca> wrote:

> On Wed, 27 May 2020, Alexandre Petrescu wrote:
>
> > Le 26/05/2020 à 18:40, Paul Wouters a écrit :
> >>  Not it is not the code licence I’m worried about but the IPR claims on
> >>  OCB.
> >
> > Do you think the OCB mode of 802.11 is IPR'ed?  Where can I search the
> > claims?
>
> It is the other way around. There is IPR on OCB, and for _some uses_
> there are royalty free licenses. For most use cases, AFAIK, there is
> no such license.
>
> We have some IPR related claims at IETF here:
>
>
> https://datatracker.ietf.org/ipr/search/?submit=draft&id=draft-irtf-cfrg-ocb
>
> And wikipedia lists:
>
>         https://en.wikipedia.org/wiki/OCB_mode
>
>         By January 2013, the author has granted a free license for any open
>         source license certified by the Open Source Initiative.[8]
>
> The original site with license seems to have vanished:
>
>         https://web.cs.ucdavis.edu/~rogaway/ocb/license.htm
>
>
> So yes, I think OCB in proprietary implementation of 802.11 would
> require a non-free license, and would therefor not be suitable for
> an IETF standard.
>
> Paul
>
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-- 
John Kenney
Director and Sr. Principal Researcher
Toyota InfoTech Labs
465 Bernardo Avenue
Mountain View, CA 94043
Tel: 650-694-4160. Mobile: 650-224-6644

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