https://ftp.nordu.net/pub/ietf/internet-drafts/draft-ietf-tls-extended-key-update-12.html
Extended Key Update for Transport Layer Security (TLS) 1.3
TLS 1.3 ensures forward secrecy by performing an ephemeral Diffie-Hellman key exchange during the initial handshake, protecting past communications even if a...
extended key updatetransport layer securitytls