Re: [homenet] security work items - what do we want to do?

Stephen Farrell <stephen.farrell@cs.tcd.ie> Wed, 24 January 2018 23:28 UTC

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To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: Ted Lemon <mellon@fugue.com>, "homenet@ietf.org" <homenet@ietf.org>
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Wed, 24 Jan 2018 23:28:44 +0000
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Subject: Re: [homenet] security work items - what do we want to do?
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Hiya,

On 24/01/18 19:21, Michael Richardson wrote:
> 
> Stephen Farrell <stephen.farrell@cs.tcd.ie> wrote:
>     > On 24/01/18 15:36, Ted Lemon wrote:
>     >> Yes, enrollment is the process by which trust is established. Google
>     >> home has an example, but it's rickety. It's actually not too bad for
>     >> actual Google devices, but the third party enrollment process could
>     >> really benefit from some open standards (imho).
> 
>     > While I don't disagree with you, I do still wonder if we'd
>     > not be better off using another term for cases where maybe
>     > all that are involved are a couple of routers in the home,
>     > and where there's no external party, such as google in the
>     > example you give.
> 
> If you are suggesting we should write a clear problem statement with
> new-fangled and terminology devoid of historical baggage, and then argue
> about that for 6-10 months... well...  we could start that now :-)

You are entirely correct that I'm not suggesting that:-)

> Two routers exchanging some keys on a TOFU basis might qualify as (mutual)
> enrollment, as the keys are stored someplace for the "second use".

Sure. OTOH, using the term enrollment I think might confuse
folks and perhaps the discussion as there's quite a bit of
(mostly PKI;-) baggage associated with that term, for me anyway.

Aside from terminology the main thing is the distinction between
situations that do, or do not, involve a party external to the
homenet, which makes a very big difference.

Cheers,
S.

> 
> Stephen Farrell <stephen.farrell@cs.tcd.ie> wrote:
>     > Without a chair hat on, I'm not sure that some of those
>     > other bits of work need to be fully finished - if we know
>     > what kind of keying that'll be used in the final results,
>     > we could make some progress, but I do agree we'd need to
> 
> the reason I said that things should be finished, is because I believe that a
> 3/4 year problem statement discussion will distract the WG from actually
> finishing that existing work
> 
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>  -= IPv6 IoT consulting =-
> 
> 
> 

-- 
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