Towards efficient and secure quantum-classical communication networks
This work is incremental, as it reviews and proposes hybrid approaches for quantum-resistant security in communication networks.
The paper discusses the combination of quantum key distribution (QKD) and post-quantum cryptography (PQC) to enhance security and performance in quantum-classical communication networks, aiming to address practical implementation drawbacks.
The rapid advancement of quantum technologies calls for the design and deployment of quantum-safe cryptographic protocols and communication networks. There are two primary approaches to achieving quantum-resistant security: quantum key distribution (QKD) and post-quantum cryptography (PQC). While each offers unique advantages, both have drawbacks in practical implementation. In this work, we introduce the pros and cons of these protocols and explore how they can be combined to achieve a higher level of security and/or improved performance in key distribution. We hope our discussion inspires further research into the design of hybrid cryptographic protocols for quantum-classical communication networks.