Show HN: Mrs-Hybride-PQC – Hybrid Kyber1024 KEM 5-6x Faster Than HKDF-SHA256

Mrs-Hybride-PQC is a hybrid post-quantum cryptography implementation combining Kyber1024 KEM with classical algorithms. The project claims to achieve 5-6x faster performance than HKDF-SHA256, offering a practical hybrid approach for transitioning to quantum-resistant encryption.

Background

- Kyber1024 is a post-quantum cryptography (PQC) algorithm recently standardized by NIST (US National Institute of Standards and Technology) to resist attacks from future quantum computers. It's a Key Encapsulation Mechanism (KEM), used to securely exchange encryption keys between two parties. - This project ("Mrs-Hybride-PQC") claims a hybrid KEM (combining Kyber1024 with another algorithm) that is 5-6x faster than HKDF-SHA256, a standard key-derivation function widely used in TLS and other protocols. Speed matters because secure key exchange is a bottleneck in many real-world systems (e.g., VPNs, messaging apps, HTTPS). - A "hybrid" approach typically combines a post-quantum algorithm (like Kyber) with a classical one (like X25519 or ECDH) as insurance: even if one is broken later, the other still protects the communication. - The project targets Linux and relies on OpenSSL, the most widely used cryptography library on the internet. However, being a GitHub "Show HN" (a user-made project showcase), it is experimental — not vetted by security experts nor ready for production use.