Re: [Trans] Volunteer opportunity! (was Re: DNSSEC also needs CT)
Stephen Kent <kent@bbn.com> Thu, 22 May 2014 18:12 UTC
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Subject: Re: [Trans] Volunteer opportunity! (was Re: DNSSEC also needs CT)
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Dimitry, Thanks for posting the list below. I have become very concerned that the doc we're working on describes a mechanism, but we seem to lack a good description of the architectural context in which CT is supposed to work. The intro text for the I-D is not at all adequate for this. Maybe the charter for this WG would have included the need to publish a doc of this sort if we had gone through the usual BoF process :-). I'd like to see a doc that addresses a number of points that are now beginning to be raised by several folks: - who is expected to operate logs, does every log cover all CAs, is one log per CA (even if operated by someone else) adequate, how are users supposed to select logs (what the UI like?), etc. - how are browsers expected to deal with missing SCTs, missing or non-matching log entries, (crypto) invalid log entries, etc. are browser actions supposed to be effect in real time or is this deferred activity model? - hard fail vs. warnings for CT "exceptions?" - how are browsers expected to deal with certs from CAs that are not part of the Web PKI? - what are the fallback plans if some number of the Web PKI CAs elect to not participate? - same question for major browser vendors? - what are the plans for alg aglity, for logs? CT is a system, not just a handful of mechanisms. It needs to be described that way. Although not perfect, I suggest the set of RFCs that describe the RPKI is illustrative of the many aspects of a global system (with PKI aspects) that need to be documented. Steve > > > > Here are my ideas about "strict" behaviour of the TLS client: > > ============== > TLS clients supporting CT are supposed to have a preconfigured set of > logs and > their public keys. > > In addition to normal validation of the certificate and its chain, > they should > validate the SCTs received during the TLS connection. > > The client fully conforming to the specification SHOULD perform the > following > steps before establishing the connection for every certificate in the > chain: > > 1. If no SCTs are provided, the client SHOULD reject the connection. > > 2. The client MUST ignore all the SCTs provided by unknown logs. > > 3. TLS clients MUST reject SCTs whose timestamp is in the future. > > 4. If no SCTs has left after steps 2-3, the client SHOULD reject the > connection. > > 5. If any of SCTs left after steps 2-3 has invalid signature, the > client SHOULD reject the connection. > > Client MAY check whether the certificate is present in the log > corresponding to the passed SCT. > If the certificate is not present in the log, the connection MUST be > rejected. > ============= > > Can it be a starting point or you want something else? > > -- > SY, Dmitry Belyavsky > > > _______________________________________________ > Trans mailing list > Trans@ietf.org > https://www.ietf.org/mailman/listinfo/trans
- [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] EXTERNAL: DNSSEC also needs CT Mehner, Carl
- Re: [Trans] EXTERNAL: DNSSEC also needs CT Tao Effect
- Re: [Trans] EXTERNAL: DNSSEC also needs CT Tao Effect
- Re: [Trans] EXTERNAL: DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Phillip Hallam-Baker
- Re: [Trans] EXTERNAL: DNSSEC also needs CT Tao Effect
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Warren Kumari
- Re: [Trans] DNSSEC also needs CT Paul Wouters
- Re: [Trans] DNSSEC also needs CT Daniel Kahn Gillmor
- Re: [Trans] DNSSEC also needs CT Phillip Hallam-Baker
- Re: [Trans] DNSSEC also needs CT Paul Wouters
- Re: [Trans] DNSSEC also needs CT Phillip Hallam-Baker
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- Re: [Trans] DNSSEC also needs CT Joseph Bonneau
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Joseph Bonneau
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Salz, Rich
- Re: [Trans] DNSSEC also needs CT Joseph Bonneau
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Joseph Bonneau
- [Trans] Volunteer opportunity! (was Re: DNSSEC al… Melinda Shore
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Dmitry Belyavsky
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- Re: [Trans] DNSSEC also needs CT Paul Wouters
- Re: [Trans] DNSSEC also needs CT Nico Williams
- [Trans] ***SPAM*** 8.1 (5) Re: DNSSEC also needs … Daniel Kahn Gillmor
- Re: [Trans] DNSSEC also needs CT Nico Williams
- [Trans] ***SPAM*** 7.971 (5) Re: ***SPAM*** 8.1 (… Ben Laurie
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- Re: [Trans] DNSSEC also needs CT Nico Williams
- [Trans] ***SPAM*** 8.956 (5) Re: ***SPAM*** 8.1 (… Nico Williams
- Re: [Trans] DNSSEC also needs CT Paul Wouters
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Paul Wouters
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- [Trans] ***SPAM*** 8.1 (5) Re: Re: DNSSEC also ne… Daniel Kahn Gillmor
- [Trans] ***SPAM*** 8.956 (5) Re: ***SPAM*** 8.1 (… Nico Williams
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Melinda Shore
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Dmitry Belyavsky
- Re: [Trans] DNSSEC also needs CT Stephen Kent
- Re: [Trans] DNSSEC also needs CT Osterweil, Eric
- Re: [Trans] DNSSEC also needs CT Phillip Hallam-Baker
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Osterweil, Eric
- Re: [Trans] DNSSEC also needs CT Paul Wouters
- Re: [Trans] DNSSEC also needs CT Daniel Kahn Gillmor
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Stephen Kent
- Re: [Trans] DNSSEC also needs CT Stephen Kent
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Stephen Kent
- Re: [Trans] DNSSEC also needs CT Phillip Hallam-Baker
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- Re: [Trans] DNSSEC also needs CT Ben Laurie
- Re: [Trans] DNSSEC also needs CT Phillip Hallam-Baker
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Dmitry Belyavsky
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… i-barreira
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Ben Laurie
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Ben Laurie
- Re: [Trans] DNSSEC also needs CT Stephen Kent
- Re: [Trans] DNSSEC also needs CT Stephen Kent
- Re: [Trans] DNSSEC also needs CT Nico Williams
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Stephen Kent
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Dmitry Belyavsky
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Ben Laurie
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Dmitry Belyavsky
- Re: [Trans] Volunteer opportunity! (was Re: DNSSE… Ben Laurie
- [Trans] trans doc issues Stephen Kent