Meret Kristen

This poster is based on a Systematic Literature Review on QKD Security Proofs. Quantum Key Distribution (QKD) requires rigorous, system-specific security proofs to enable certification for deployment in critical infrastructures. This poster presents a preliminary overview of security proof techniques for QKD, and discusses their role in hybrid cryptographic protocols combining classical, post-quantum, and quantum methods. With the goal of establishing the use of QKD in industry and infrastructure, we further outline challenges for practical integration and certification, as recommendations by national agencies like for example the German BSI emphasize that QKD must be combined with post-quantum cryp- tography in hybrid approaches. This work provides (i) a concise overview of hybrid cryptographic approaches involving QKD and (ii) a preliminary struc- tured review of modern QKD security proof techniques.