Re: [Ace] Comments on draft-tiloca-ace-oscoap-joining

Carsten Bormann <cabo@tzi.org> Fri, 20 October 2017 05:49 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Date: Fri, 20 Oct 2017 07:48:26 +0200
Cc: draft-tiloca-ace-oscoap-joining@ietf.org, draft-palombini-ace-coap-pubsub-profile@ietf.org, ace@ietf.org
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To: Jim Schaad <ietf@augustcellars.com>
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Subject: Re: [Ace] Comments on draft-tiloca-ace-oscoap-joining
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On Oct 20, 2017, at 07:41, Jim Schaad <ietf@augustcellars.com> wrote:
> 
> The pub-sub document does initial key distribution, while this document does
> not.  Neither document does any discussion of how subsequent key
> distribution is done to deal with forward and backward security of messages.

By being more explicit that the “pubsub” profile really is a group communication profile, it would be easier to remember that we have to solve all the usual problems in securing group communication, including group membership maintenance.

Grüße, Carsten