Work

On Mixing of Quantum Key Distribution and Post-Quantum Cryptographic Keys: Min-Entropy Bounds, Provisioning Policies, and Network-Oriented Trade-Offs

Year: 2026

Type: article

Abstract: Quantum key distribution and post-quantum cryptography represent the backbone for tackling security challenges in the quantum era. Although each of them has its own shortcomings, their practical implementation raises the question of their possible combination and synergy. In this context, the paper considers mixing established cryptographic keys at key management layer, using both approaches to optimize the available key resources in a quantum network, also balancing the provided security. We provide analytical model, security analysis, and optimal contribution of keys in the mixed cryptographic key. Extensive simulation results demonstrate the validity of this approach in point-to-point and network environments.

Source: IEEE Journal on Selected Areas in Communications

DOI: 10.1109/jsac.2026.3722598

Authors: Miralem Mehic, Stefan Rass, Sergej Jakovlev, Marcin Niemiec, Peppino Fazio, Miroslav Voznak

Institutions: University of Sarajevo, Johannes Kepler University of Linz, VSB - Technical University of Ostrava, AGH University of Krakow

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,645

Funder: Lietuvos Mokslo Taryba