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Re: [babel] WG Last Call for draft-ietf-babel-dtls - failed

Juliusz Chroboczek <jch@irif.fr> Fri, 04 January 2019 01:11 UTC

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Date: Fri, 04 Jan 2019 02:11:37 +0100
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From: Juliusz Chroboczek <jch@irif.fr>
To: David Schinazi <dschinazi.ietf@gmail.com>
Cc: Donald Eastlake <d3e3e3@gmail.com>, babel-chairs <babel-chairs@ietf.org>, Babel at IETF <babel@ietf.org>
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Subject: Re: [babel] WG Last Call for draft-ietf-babel-dtls - failed
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Dear Donald,

I am just as surprised as David by your decision to fail the last call.

>> insufficient support indicated

> I think this might be due to most WG participants having already shown support
> for this document in the past. I did not see anyone arguing not to publish.

As far as I am aware, everyone agrees that Babel-DTLS should be published,
in order to satisfy those use cases that are not served by Babel-HMAC
(asymmetric keying and confidentiality).

>> discussion on preserving crypto state

> This was discussed on the list and there was pretty immediate consensus that
> adding some text would address the issue entirely. I've now added that text.
> However, I don't think the lack of that text warranted failing the WG last
> call.

This is not a wholly hypothetical vulnerability, and the fix is a single
paragraph of text, a simple copy-paste from the latest revision of the
Babel-HMAC draft.

>> co-existence with hmac including port numbers

> I'm not sure what you are referring to, could you elaborate please?

I too would appreciate a clarification.

-- Juliusz

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