Title: PPTFA-SC: privacy preserving three factor authentication scheme for smart city IoT network

Authors: Vinod Kumar Mahor; R. Padmavathy; Santanu Chatterjee

Addresses: Department of Computer Science and Engineering, National Institute of Technology, Warangal, 506004, India ' Department of Computer Science and Engineering, National Institute of Technology, Warangal, 506004, India ' Research Center Imarat (RCI), Vignyana Kancha, Hyderabad – 500069, India

Abstract: Application of IoT in the field of smart city is resulting in revolutionised quality of life, efficient public services and digitally managed infrastructure. The concept of smart city is realised by deploying IoT enabled sensor and actuator nodes in the field of interest. These nodes then operates autonomously to collect data from its surrounding environment and logs to the gateway node for analysis and decision making. The gateway node can connect to internet which enables remote data access to the users. Data can be accessed from gateway node or from specific node. Ensuring data security and genuinity of accessed information is crucial for development of resilient infrastructure and efficient delivery of public services. This necessitates the strong entity authentication mechanism to prevent adversarial attacks In this paper, we propose novel and secure authentication scheme to address security challenges in smart applications and perform its security analysis and simulation.

Keywords: authentication; security; WSN; IoT; smart city; AVISPA; privacy.

DOI: 10.1504/IJAHUC.2026.154352

International Journal of Ad Hoc and Ubiquitous Computing, 2026 Vol.52 No.2, pp.106 - 123

Received: 13 Aug 2024
Accepted: 31 Mar 2025
Published online: 23 Jun 2026 *

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