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

TL;DR

This paper introduces an adaptive security framework that combines quantum key distribution and post-quantum cryptography to enable quantum-safe communications in real-world, heterogeneous networks with dynamic security level management.

Contribution

It proposes a novel hierarchical key management architecture supporting hybrid quantum-safe communication modes adaptable to node capabilities.

Findings

Framework successfully implemented on Kubernetes testbed

Demonstrates robust operation across various security modes

Supports gradual integration of quantum-safe technologies

Abstract

The advent of quantum computing threatens 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.