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Post-Quantum Cryptographic Approach for Linux Kernel Module Used in Intrusion Detection System

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  • Mariuca PRICOP

  • Cristian TOMA

Abstract

As quantum computers get closer to being used in real-life situations, existing methods to protect against cyber threats are becoming less effective. This paper presents a hybrid, quantum-enhanced intrusion detection system implemented as a Linux kernel module, integrating kernel-level monitoring, user-space intelligence, quantum machine learning (QML) and post-quantum cryptographic (PQC) signature verification. The system uses a zero-trust approach by requiring cryptographic authorization for legitimate actions while simultaneously detecting anomalous behavior. Final enforcement decisions are executed within the kernel, ensuring low-latency response and strong security guarantees. By decoupling heavy cryptographic operations from kernel space and leveraging quantum-enhanced analysis techniques, this approach achieves a balance between performance, scalability, and resilience against future quantum threats.

Suggested Citation

  • Mariuca PRICOP & Cristian TOMA, 2026. "Post-Quantum Cryptographic Approach for Linux Kernel Module Used in Intrusion Detection System," Informatica Economica, Academy of Economic Studies - Bucharest, Romania, vol. 30(2), pages 71-81.
    • Handle: RePEc:aes:infoec:v:30:y:2026:i:2:p:71-81
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