Hybrid TLS on This Site

This website supports hybrid TLS 1.3 key exchange for compatible clients using X25519MLKEM768. In practical terms, that means the connection can combine a widely deployed classical method with a post-quantum key encapsulation mechanism during session setup.

What That Means

• Your browser and this site can agree on a session key using a hybrid classical + post-quantum exchange.
• The post-quantum component is ML-KEM-768, used here through the hybrid TLS group X25519MLKEM768.
• If a client does not support this hybrid group yet, the site can still fall back to classical groups for compatibility.

What It Does Not Mean

• This page is not claiming that every part of the WebPKI has already migrated to post-quantum cryptography.
• Certificate authentication remains classical today, which is still the normal public-web deployment model.
• The claim is specifically about the key exchange used for the HTTPS session, not about a fully post-quantum certificate ecosystem.

Why Use a Hybrid Approach

A hybrid design is the practical transition model now being deployed across the internet. It keeps compatibility with today’s systems while adding post-quantum protection to the session key establishment step for clients that support it.

Technical Note

The hybrid group used on this site is X25519MLKEM768. It combines classical X25519 with post-quantum ML-KEM-768. Certificate authentication remains based on the current public WebPKI trust model.

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