OpenSSL 4.0 Promises Support for Encrypted Client Hello
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OpenSSL 4.0 Promises Support for Encrypted Client Hello, SNMP KDF, and SRTP KDF

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MN
Marcus Nestor
Mar 24, 2026

OpenSSL 4.0 promises support for Encrypted Client Hello (ECH, RFC 9849), support for RFC 8998, support for signature algorithm sm2sig_sm3, key exchange group curveSM2 support, support for [tls-hybrid-sm2-mlkem] post-quantum group curveSM2MLKEM768, and support for SNMP KDF and SRTP KDF.
MN

Marcus Nestor

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