Re: [Ace] Summary of ACE Group Communication Security Discussion

[Hannes Tschofenig <[e-mail]>]

I noticed that Eliot also expressed support for the approach presented 
by Abhinav, see 
https://mailarchive.ietf.org/arch/msg/ace/ctCtj9QT0WwBDki7vxgVeYVzFaI

Ciao
Hannes

On 09/26/2016 07:11 PM, Kepeng Li wrote:
> Hi all,
>
>
> We went through all email exchanges again in order to see where we are.
> Abhinav also proposed a way forward in his email to the list,
> see https://www.ietf.org/mail-archive/web/ace/current/msg01961.html,
> where he proposed to standardize a solution based on public key as well
> as symmetric key cryptography.
>
>
> Here is our impression of the views presented by various people.
>
>
> Mike seems to think the only acceptable solution is to use messages
> signed using public key crypto and is strongly against working on a
> symmetric key group communication protocol.
>
>
> Paul Duffy and Michael Richardson are in favor of defining a public key
> crypto solution but it is not clear whether they are against specifying
> a symmetric key solution as well.
>
>
> Walter, Abhinav, Sandeep, Hannes are in favor of working on a symmetric
> key group communication security protocols (as co-authors of the work).
> Oscar Garcia (Philips) is also in favor of the work.
>
>
> In this mail to the list,
> see https://www.ietf.org/mail-archive/web/ace/current/msg01931.html,
> Robert Cragie (ARM) expressed a view that public key crypto is the
> preferred solution but others based on symmetric crypto are still worthy
> of consideration.
>
>
> Markus Grunwald (Osram) also appears to be in favor of the proposed
> approach, see
>
> https://www.ietf.org/mail-archive/web/ace/current/msg01932.html
>
>
>
> Akbar Rahman also seems to be in favor of working on a group
> communication security protocol, see
>
> https://www.ietf.org/mail-archive/web/ace/current/msg01873.html
>
>
>
> Ned Smith also seems to be in favor of working on a group communication
> security protocol, as expressed in his mail to the list:
>
> https://www.ietf.org/mail-archive/web/ace/current/msg01872.html
>
>
>
> The opinion of the following persons in the discussion appear unclear to me:
>
> - Mohit Sethi
>
> - Ludwig Seitz
>
> - Carsten Bormann
>
> - Stephen Farrell
>
> - Jim Schaad (offered clarifications regarding the use of COSE)
>
>
>
> Pascal Urien and Rene Struik provided performance data but they didn't
> appear to have expressed a strong view about the question regarding
> symmetric vs. asymmetric crypto for group communication security.
>
> Derek Atkins offered performance data for public key crypto but refers
> to new techniques (rather than RSA/ECC).
>
>
>
> Please correct us if we are wrong in our interpretation of your mail
> postings.
>
>
>
> Ciao
>
> Hannes & Kepeng
>
>
>
>
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