[TLS] draft-ietf-tls-tls13 posted

Eric Rescorla <ekr@rtfm.com> Wed, 26 October 2016 05:44 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 26 Oct 2016 16:43:58 +1100
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Subject: [TLS] draft-ietf-tls-tls13 posted
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Folks,

I have just posted draft-ietf-tls-tls13-18.

The only wire format change from -17 is that I removed the extra key
derivation stage computing resumption_psk from RMS. This was a
holdover from when we also had a resumption context. Now PSK for
connection N+1 = RMS from connection N. Thanks to Kazuho for
suggesting this simplification.

This draft also makes a number of minor editorial changes that
should make for easier reading.

The two remaining open technical issues I am aware of are both
requirements issues:

1. Can you resume with a different SNI than the one that the
   connection was initiated with [current answer is "no"]?

2. Do you need an application profile to do post-handshake
   client auth [current answer is "no"]?

There has been a bunch of discussion of these on the list but no
consensus declarations from the chairs. These are easy to change
in the draft once the chairs make the call.

As always, comments welcome.

-Ekr

P.S. NSS will be skipping draft-17 and going right to -18. This
should happen before Seoul.