Trust Management for the LPWAN Devices in a Smart City

The Internet of Things (IoT) is used in several domains like health care, transportation, military, banking, and many more. These applications can lead to the realization of a smart city application. Recently, Low Power Wide Area Networks (LPWAN) have beengetting attention to implement various IoT applications. However, LPWAN devices are deployed in an environment where they can face malicious cyber-attacks leading to compromised data. To make successful network communication, security is an important factor that must be taken into consideration. Previously, many solutions involving sophisticated data encryption and machine learning techniques have beenproposed for this purpose. However, they require processing power which is mostly not available in the LPWAN devices. Here, we can apply lightweight trust management techniques to find the reliability of a node. In this article, we propose a trust management framework for securing LPWAN-based Smart City applications. Multiple Smart City case studies are considered for evaluating the proposed technique and results show better intruder detection.