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International Conference on Communications

Quantum-Safe Lattice-Based Authentication and Key Agreement Protocol for Internet of Things

Basudeb Bera, Rohini Poolat Parameswarath, Biplab Sikdar

Published May 24, 2026• 0 citations
Publisher
DOI
10.1109/icc59461.2026.11588078

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Abstract The increasing interconnectedness of devices via the Internet of Things (IoT) highlights the growing importance of addressing IoT security issues. Authenticated Key Agreement (AKA) protocols ensure secure communication between IoT devices, users, and central servers. Preserving anonymity in AKA protocols is especially crucial given privacy issues and user preferences. The emergence of Shor's algorithm in 1994 and recent advancements in quantum computing have posed a threat to the security of classical AKA schemes relying on integer factorization, discrete logarithm, and other number theory problems. Consequently, researchers have turned their attention to developing quantum-resistant AKA schemes. In this context, Rana and Mishra introduced a lattice-based key agreement protocol under ring-LWE problem for IoT-enabled smart devices. However, a thorough security assessment uncovered vulnerabilities in their protocol, specifically susceptibility to replay and Key Compromise Impersonation (KCI) attacks. Furthermore, their approach reveals potential weaknesses in user impersonation if the user's identity is compromised.
In recent years, the Internet of Things (IoT) has gained immense popularity in various aspects of work, learning, and daily life. Within the IoT realm, there is a growing concern regarding communication security issues between users and servers. However, addressing the communication security between servers is equally imperative, which has not received as much attention. To this end, we propose a certificateless anonymous authenticated key agreement (AKA) algorithm based on learning with errors (LWEs) and inhomogeneous small integer solution (ISIS) security assumptions. Our scheme provides strong resistance to quantum attacks and protects the privacy of communication servers. It also has constant communication costs and lower computational requirements than existing lattice-based anonymous AKA algorithms on the broadcast channel. Additionally, the proposed scheme eliminates the resource consumption of managing complex certificates and addresses the security risks associated with key escrow in the key generation center (KGC). Through security and performance analysis, we demonstrate that our approach can enhance the security of IoT-based healthcare systems while significantly improving communication efficiency. Our proposed scheme provides a promising solution to security issues related to server communication in IoT systems.