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feat: enable ML-KEM post-quantum TLS key exchange for AL2023 nginx#145

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aws:mainfrom
palmep:feat/pq-tls-mlkem
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feat: enable ML-KEM post-quantum TLS key exchange for AL2023 nginx#145
palmep wants to merge 1 commit into
aws:mainfrom
palmep:feat/pq-tls-mlkem

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@palmep

@palmep palmep commented May 7, 2026

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Description of changes: The latest AL2023 AMI includes OpenSSL 3.5, allowing for ML-KEM hybrid post-quantum key exchange without any custom compilation.

This change enables TLS 1.3 (alongside TLS 1.2) and configures the nginx ssl_conf_command Groups directive to offer X25519MLKEM768 as the preferred key exchange group, with classical x25519 and secp256r1 as fallbacks for clients that don't yet support PQC.

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