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Re: [babel] Mirja Kühlewind's Discuss on draft-ietf-babel-dtls-07: (with DISCUSS and COMMENT)

Benjamin Kaduk <kaduk@mit.edu> Thu, 15 August 2019 05:07 UTC

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Date: Thu, 15 Aug 2019 00:06:51 -0500
From: Benjamin Kaduk <kaduk@mit.edu>
To: Juliusz Chroboczek <jch@irif.fr>
Cc: Mirja Kuehlewind <ietf@kuehlewind.net>, babel-chairs <babel-chairs@ietf.org>, Babel at IETF <babel@ietf.org>, David Schinazi <dschinazi.ietf@gmail.com>, The IESG <iesg@ietf.org>, Donald Eastlake <d3e3e3@gmail.com>, draft-ietf-babel-dtls@ietf.org
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Subject: Re: [babel] Mirja Kühlewind's Discuss on draft-ietf-babel-dtls-07: (with DISCUSS and COMMENT)
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On Wed, Aug 14, 2019 at 07:10:06PM +0200, Juliusz Chroboczek wrote:
> > Thanks for the detailed explanation. I believe the underlying problem is
> > that in this approach the Hello is not authenticated.
> 
> Exactly.
> 
> One of the important properties of this protocol is that it uses
> a previously standardised protocol (DTLS) for all crypto work.  David
> feels that is important.  Since the IETF has not standardised any
> general-purpose security mechanism that is suitable for protecting
> multicast traffic, we're stuck.

There is perhaps some content of note in
https://tools.ietf.org/html/draft-ietf-core-oscore-groupcomm though it of
course does not meet the precondition, at present.

-Ben

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