RFC 10015 Deprecates Obsolete Key Exchange Methods in TLS 1.2 and DTLS 1.2

RFC 10015: Deprecating Obsolete Key Exchange Methods in TLS 1.2 and DTLS 1.2

This document deprecates Diffie-Hellman and RSA key exchanges in TLS 1.2 and DTLS 1.2 due to critical security flaws like the Raccoon attack and lack of forward secrecy. It also discourages static Elliptic Curve Diffie-Hellman suites. These updates address interoperability issues and timing side channels that threaten connection security, urging the industry to adopt safer cryptographic standards.