Extending Quantum-Safe Communications to Real-World Networks: An Adaptive Security Framework

• URL: http://arxiv.org/abs/2511.22416v1
• Date: Thu, 27 Nov 2025 12:51:10 GMT
• Title: Extending Quantum-Safe Communications to Real-World Networks: An Adaptive Security Framework
• Authors: Ane Sanz, Eire Salegi, Asier Atutxa, David Franco, Jasone Astorga, Eduardo Jacob,
• Abstract summary: Real-world networks cannot be fully Quantum Key Distribution-enabled due to infrastructure constraints.<n>This paper presents an adaptive security framework that enables quantum-safe communications across real-world heterogeneous networks.<n>Results highlight its potential to support the gradual integration of quantum-safe technologies into existing infrastructures.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: The advent of quantum computing threats classical cryptographic mechanisms, demanding new strategies for securing communication networks. Since real-world networks cannot be fully Quantum Key Distribution (QKD)-enabled due to infrastructure constraints, practical security solutions must support hybrid operation. This paper presents an adaptive security framework that enables quantum-safe communications across real-world heterogeneous networks by combining QKD and Post-Quantum Cryptography (PQC). Building upon a hierarchical key management architecture with Virtual Key Management Systems (vKMS) and a centralized Quantum Security Controller (QuSeC), the framework dynamically assigns security levels based on node capabilities. By transitioning between pure QKD, hybrid, and PQC modes, it ensures end-to-end quantum-safe protection regardless of the underlying node capabilities. The framework has been implemented and validated on a Kubernetes-based containerized testbed, demonstrating robust operation and performance across all scenarios. Results highlight its potential to support the gradual integration of quantum-safe technologies into existing infrastructures, paving the way toward fully quantum-safe communication networks.

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