Below are some of the more significant issues discussed at the meeting in Buenos Aires:
1. Adopt David Benjamin's signature and hash algorithm negotiation structure that ties both together. New code points to define signature algorithm, curve and hash as a unit. - PR incorporated into draft - https://github.com/tlswg/tls13-spec/pull/404 2. Adopt Anti-Downgrade mechanism proposed by Green/Bhargavan. - PR incorporated into draft - https://github.com/tlswg/tls13-spec/pull/284 3. Adopt a simplified NewSessionTicket Format. The ticket format should indicate if the server would accept ECDHE-PSK or PSK and indicate if early data is allowed or not. The use of a bit mask was discussed in the meeting. - PR to be discussed on the list when available. 4. Adopt proposal to add back encrypted extensions for early data. Encrypted extensions provide application identification (ALPN) and elapsed timestamp. - PR to be discussed on the list when available. 5. Adopt simplified more linear key separation derivation. - PR to be discussed on the list when available. 6. Adopt proposal for demuxing handshake message from data messages. New handshake key is derived to encrypt post initial handshake messages. Proposed solution is to wrap encrypted handshake message in encrypted data message. This is pending cryptographic evaluation. - PR to be discussed on the list when available. 7. Adopt proposal to include OCSP stapling as part of certificate messages. - PR to be discussed on the list when available. 8. Adopt proposal to allow server to send known groups (Issue 415). - PR to be discussed on the list when available. 9. Park proposal to add receive generation field in the key update so client knows it is safe to release keys (PR 426) - We do not have consensus to move forward with this PR
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