Re: [dane] email canonicalization for SMIMEA owner names

Nico Williams <nico@cryptonector.com> Fri, 12 December 2014 05:08 UTC

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Date: Thu, 11 Dec 2014 23:08:31 -0600
From: Nico Williams <nico@cryptonector.com>
To: Mark Andrews <marka@isc.org>
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Subject: Re: [dane] email canonicalization for SMIMEA owner names
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On Fri, Dec 12, 2014 at 03:42:11PM +1100, Mark Andrews wrote:
> The other thing we have to do is to arrange for the CERT to get
> from the MUA to the keyserver.  Extending submission to handle that
> is a sensible.  That way the user can generate their own CERT.  They
> can then submit it to the keyserver using submission/smtp after
> authenticating themselves.  This last step is critical.

Yes: use MSA/MTA as the keyserver, both for lookup and registration.

For verification/key lookup results can be attested to via DNSSEC.
A client's MSA could check the peer's MTA on behalf of the MUA.

I think this solves all problems, including aliasing, except in the case
where the sender doesn't trust its own MSA as to the local-parts of
peers.

Nico
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