Re: [Anima] Alissa Cooper's Discuss on draft-ietf-anima-bootstrapping-keyinfra-28: (with DISCUSS and COMMENT)

Michael Richardson <mcr+ietf@sandelman.ca> Mon, 16 December 2019 19:56 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Alissa Cooper <alissa@cooperw.in>, daedulus@btconnect.com
cc: IESG <iesg@ietf.org>, draft-ietf-anima-bootstrapping-keyinfra@ietf.org, tte+ietf@cs.fau.de, anima@ietf.org, anima-chairs@ietf.org
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Date: Mon, 16 Dec 2019 14:56:18 -0500
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Subject: Re: [Anima] Alissa Cooper's Discuss on draft-ietf-anima-bootstrapping-keyinfra-28: (with DISCUSS and COMMENT)
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{Hi Tom, I don't quite understand, but I don't seem to get emails directly
From you.  Or perhaps it has to do with it being posted through the
datatracker.  This is not the first review I have missed in this way.}

We had forgotten about the content of Appendix C, which is not normative.
It stems from an era when we were not sure how successful RFC8520 will be.

I have issued version -31 in which we remove Appendix C rather than fix it.

This extension could be added correctly at a later date, and at this point,
we don't see the MUD FILE->MASA URL flow as particularly important.

Both URLs can be in the IDevID if needed, at the cost of bytes in the IDevID
certificate.

I think that there are operational problems with embedding the MUD URL in the
IDevID relating to firmware upgrades, nor is that related to this appendix.
It is not a BRSKI issue, but it does mean that the likelyhood of a MUD URL
being the only extension that can be afforded an IDevID is significantly less
likely.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-