한국엔터프라이즈아키텍처학회

In IoT, Wireless Sensor Networks (WSNs) play a crucial role in the real-time collection and transmission of data. A wireless sensor network is a network in which small sensor nodes are interconnected through wireless communication to collect and transmit data. This wireless sensor network is a technology primarily deployed by situating sensor nodes in various application environments. After autonomously forming a network, it collects physical information wirelessly from sensor nodes and utilizes it for purposes such as monitoring and control. However, since sensor nodes use wireless communication, attackers can potentially eavesdrop on or intercept data from sensor nodes using methods such as man-in-the-middle attacks. Therefore, user authentication and key agreement protocols in wireless sensor networks stand out as crucial areas of research. In this paper, we propose an authentication method that addresses vulnerabilities identified by Tyagi et al. in wireless sensor networks. The security analysis results demonstrate that the proposed protocol is resilient against various attacks, including stolen smart card attack, offline password guessing attack, identity guessing attack, insider attack, and user forgery attack. Furthermore, the proposed protocol proves to be efficient in terms of computational and communication costs.