Post-quantum zero-trust backbone: Securing critical infrastructure communications against quantum and conventional cyber threats
Year: 2025
Type: article
Abstract: The convergence of quantum computing capabilities and sophisticated cyberattacks poses unprecedented threats to critical infrastructure communications. Traditional cryptographic defenses and perimeter-based security models are increasingly inadequate against quantum-enabled adversaries and advanced persistent threats targeting operational technology (OT) environments. This paper presents a comprehensive framework for implementing post-quantum cryptography (PQC) within a zero-trust architecture to secure critical infrastructure communications across control centers, substations, hospitals, and ports. Our approach integrates NIST-endorsed quantum-resistant cryptographic suites with identity-first network segmentation, authenticated SCADA protocol encryption, and continuous verification mechanisms. The proposed framework addresses the unique challenges of legacy industrial systems while providing scalable security for hybrid OT/IT environments. Through systematic analysis of current vulnerabilities and implementation strategies, this research demonstrates how a post-quantum zero-trust backbone can prevent catastrophic cyberattacks while maintaining operational continuity in critical infrastructure sectors.
Author: Ayogu, Winifred Chukwuebuka
Institution: University of New Haven
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7107956333
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