Subject: [Cfrg] Draft minutes for CFRG at IETF 100 meeting

From: "Salz, Rich" <[email-masked]>
Date: Wed, 15 Nov 2017 08:53:57 +0000

Crypto Forum Research Group
Weds 15 nov 17, afternoon II
Alexsey chairing
Rich Salz minutes
Yoav Nir jabber scribe

Doc status
                See chair slides for details

Crypto Review panel
                Lots of good reviews done

Re-keying mechanisms for symmetric keys, Stanislav Smyshlyaev
                Explanation of goals, response to reviews and feedback. Plan to get version addressing existing reviews by end of January.
                Q&A about how to signal re-key in, for example, non-TLS uses

Transition from classical to Post-Quantum Cryptography, Paul Hoffman
                (Last time Kenny spoke, Paul wasn’t present; this time Paul’s present and Kenny isn’t.  Hmm)
                Helping people who like to make predictions, make predictions
                Proposed CFRG adoption.  Consensus in room was strongly in favor, some need more info. To be confirmed on the list.
                Q&A about num of qubits needed for 2K RSA, possibility of multiple smaller-sized machines, and practicality of using (much) larger curves with existing algorithms
                Get your friends to help review and/or provide content!

SPAKE2, a PAKE, Benjamin Kaduk
                Expired back in February 2016, and Ben picked it up and has a new version coming out
                Initial use-case is KRB pre-auth before getting a ticket; there’s others
                Q&A on tech details, and pointing out the “pake requirements” RFC that this should reference

PEKX, Public Key Exchange Dan Harkins
                Define a way to exchange ‘raw’ public keys, including auth and binding an identity
                Has had  crypto review, has interoperable implementations
                Looking to have CFRG adoption; insufficient readers in room, will take to the list
                Q&A about identity, binding to key etc

Cryptographically traversable blockchains or ‘skipchains’ Bryan Ford
                Addressing problem of efficient verification of block chains – how to “catch up” on state
                See “Chainiac” paper in Usenix Security 2017 proceedings (which has more than just the skipchain cryptographic structure)
                Q&A about signing roster changes, and picking trusted entities (see paper)