[Mathmesh] UDF for onboarding

Michael Richardson <mcr+ietf@sandelman.ca> Fri, 16 August 2019 00:32 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Phillip Hallam-Baker <phill@hallambaker.com>
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Date: Thu, 15 Aug 2019 20:32:28 -0400
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Subject: [Mathmesh] UDF for onboarding
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Phillip Hallam-Baker <phill@hallambaker.com>; wrote:
    > Lets break this out into a separate thread. Can you suggest the data
    > flow?  I am assuming here that this is so I can make a secure
    > connection to a device over WiFi without Internet connectivity so the
    > connection mechanism described in the doc isn't exactly going to work
    > :).

DPP is https://www.wi-fi.org/discover-wi-fi/wi-fi-easy-connect and
google can find you a copy of the document if you don't like their form.
It is already defined.

I am extending it in draft-richardson-anima-smarkaklink-01.

I don't think that I (or Wi-Fi Alliance) have the opportunity to change to
UDF at this point.

Where I think it might still be useful is where the goal is not WiFi
onboarding, but rather a proximity authorization.
For instance, getting access to the thermostat or TV in a hotel room. 
You won't get ownership, rather you'll get authorization to do some stuff.

Some devices won't have screens that can display the QR code, and
instead, a QR code will be printed on paper an attached.  Yes, they will
need to be changed regularly, but maybe UDF can help here.

Being able to type the UDF into a computer, and/or read it over the phone
would have some advantages, although I'm hard pressed to come up with a
non-TV-computer-security-plot-theatre situation where that makes sense.

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