TLS 1.3 handshake

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1. 1
   Client sends protected application data
2. 2
   Server sends its certificate, proof, and Finished
3. 3
   Client sends ClientHello and a key share
4. 4
   Client sends Finished
5. 5
   Client checks the certificate, proof, and Finished
6. 6
   Server sends ServerHello and its key share