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Re: [quicwg/base-drafts] Output of the discard keys design team (#2673)

David Schinazi <notifications@github.com> Sat, 11 May 2019 19:42 UTC

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Subject: Re: [quicwg/base-drafts] Output of the discard keys design team (#2673)
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DavidSchinazi commented on this pull request.



> +ack-eliciting frames, such as PING, which will cause the handshake to be
+confirmed when they are acknowledged.
+
+
+### Discarding 0-RTT Keys
+
+Clients SHOULD discard 0-RTT keys as soon as they install 1-RTT keys, since
+they have no use after that moment.
+
+0-RTT and 1-RTT packets share the same packet number space, and clients do not
+send 0-RTT packets after sending a 1-RTT packet ({{using-early-data}}).
+Therefore a server MAY discard 0-RTT keys as soon as it receives a 1-RTT
+packet.  However, due to packet reordering, a 0-RTT packet could arrive after
+a 1-RTT packet.  Servers MAY temporarily retain 0-RTT keys to allow decrypting
+reordered packets without requiring their contents to be retransmitted with
+1-RTT keys.  Servers MUST discard 0-RTT keys within three times the Probe

Fixed

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