Re: [TLS] Earlier exporters
Eric Rescorla <ekr@rtfm.com> Fri, 07 October 2016 21:07 UTC
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From: Eric Rescorla <ekr@rtfm.com>
Date: Fri, 7 Oct 2016 14:07:09 -0700
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To: Nick Harper <nharper@google.com>
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Earlier exporters
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I was assuming that there were two exporters: Export() --> the same API as in 1.2 and computed as described here Export0RTT -> A new API that computes the early_exporter. -Ekr On Fri, Oct 7, 2016 at 1:59 PM, Nick Harper <nharper@google.com> wrote: > Does the wording of this PR mean that the value from the exporter changes > depending on whether it's run before or after exporter_secret can be > computed? I think it would be better to keep an RFC 5705-style exporter > that remains constant for the connection. The 0-RTT exporter from an API > perspective can be a separate thing that a caller has to explicitly choose > to use. > > On Fri, Oct 7, 2016 at 8:10 AM, Eric Rescorla <ekr@rtfm.com> wrote: > >> Please see the following PR: >> https://github.com/tlswg/tls13-spec/pull/673 >> >> This includes various changes to make exporters/resumption work better. >> >> Basically: >> 1. Add a 0-RTT exporter and change the transcript for the regular >> exporter so it >> only includes the transcript up to ServerFinished. This gives it >> parity with the >> rest of the traffic keys. If we need an exporter with the full >> transcript we can >> always add it later >> >> 2. Point out that you can predict ClientFinished for NST when not doing >> Client auth. This lets you issue tickets on the server's first >> flight, while still >> ensuring that if you do client auth you still bind resumption to the >> client's >> full transcript. >> >> These are pretty straightforward changes, so absent objections I'll merge >> them early next week. >> >> -Ekr >> >> >> _______________________________________________ >> TLS mailing list >> TLS@ietf.org >> https://www.ietf.org/mailman/listinfo/tls >> >> >
- [TLS] Earlier exporters Eric Rescorla
- Re: [TLS] Earlier exporters Nick Harper
- Re: [TLS] Earlier exporters Eric Rescorla
- Re: [TLS] Earlier exporters Nick Harper
- Re: [TLS] Earlier exporters Eric Rescorla