David Cooper 3be7a854cb Add support for RFC 8998 and draft-yang-tls-hybrid-sm2-mlkem ...

The commit adds support for RFC 8998 and draft-yang-tls-hybrid-sm2-mlkem. This includes support for the TLS_SM4_GCM_SM3 and TLS_SM4_CCM_SM3 cipher suites, the key exchange groups curveSM2 and curveSM2MLKEM768, and SM2 public keys and signatures.

While this commit adds support to tls_sockets() to decrypt server responses encrypted under SM4 GCM or CCM, OpenSSL does not support performing key derivation using curveSM2. So, tls_sockets() can not decrypt server responses if the key exchange was performed using curveSM2 or curveSM2MLKEM768.

2026-04-07 13:50:53 -07:00

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