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Internet of Things

Securing IoT systems in a post-quantum environment: Vulnerabilities, attacks, and possible solutions

Ahmad Alomari, Sathish Kumar

Published Feb 20, 2024• 46 citations
Publisher
DOI
10.1016/j.iot.2024.101132

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Abstract In internet of things (IOT) healthcare systems, sensitive patient information is transmitted over the network to medical professionals. Numerous lightweight authentication protocols have been proposed; however, most of them remain vulnerable to various cyberattacks, allowing attackers to eavesdrop on or manipulate transmitted data. We examine several recently proposed lightweight authentication schemes for healthcare systems. Our security analysis demonstrates that these schemes remain vulnerable to malicious gateway attacks, desynchronization attacks, and key screw attacks. .To address these issues and ensure post- quantum security in healthcare IoT, we propose a post-quantum key establishment protocol based on lattice- based cryptography (LWE). the proposed scheme prevents the gateway from accessing both the secret keys and their parameters, thereby eliminating the possibility of malicious gateway attacks. The proposed protocol ensures user anonymity, forward secrecy, and resistance to impersonation, key screw, and desynchronization attacks.. The proposed protocol ensures secure and efficient establishment of three-round key establishment among entities . Our performance evaluation shows that the proposed scheme achieves lower computation and communication overhead compared to recent related works. The security of the protocol is thoroughly analyzed through informal reasoning, Burrows–Abadi–Needham (BAN) logic, and ProVerif, confirming its robustness and suitability for resource-constrained IoT-based healthcare environments.
The advent of quantum computing technology has transformed computing technologies into a machine with higher computing power. However, this has also introduced vulnerability challenges, as traditional cryptographic systems are prone to vulnerability to cyber threats, particularly in the context of the IoT. This paper presents a systematic literature survey of the landscape of postquantum cryptographic systems and their impact on the security of connected systems. The paper has explored various key encapsulation mechanisms that are resistant to quantum attacks, existing post-quantum standards, and assessed their applicability in the IoT environments and implementation challenges. The paper highlighted some of the limitations for adopting post-quantum cryptography due to limited existing standards which can be used to enforce the confidentiality, integrity, security, and privacy of data transmitted particularly by IoT connected devices.
In this work, a lightweight post-quantum cryptographic protocol specifically designed for resource-constrained IoT edge devices is presented, addressing the vulnerability of conventional encryption to quantum computing attacks. The proposed protocol employs a modified NTRU-based algorithm with reduced parameter sizes, achieving switch production in 12.4 ms, encryption in 8.2 ms, and total energy consumption of 4.2 mJ per exchange - 63% lower than standard post-quantum protocols. Experimental results demonstrate resistance against quantum attacks exceeding 1018 processes while maintaining response times under 50 ms, with a compression mechanism reducing message size to 186 bytes. The protocol achieves an optimal balance between post-quantum security and operational efficiency, offering a practical solution for narrow-bandwidth, battery-limited IoT environments.