Trust Management System for IoT heterogeneous mesh network

Background/Objectives: The technology offered by IoT is so vast and advanced that the physical objects around us will be able to collect information from anywhere and everywhere. However, the complexities of the IoT system make developing trust management system very intricate. Hence, the objective is to develop an efficient trust management system for IoT heterogeneous network for providing trust to ensure efficiency between devices. Methods/Statistical analysis: The calculation of both direct and indirect trusts is carried out for finding out whether a node is to be trusted or not. Our proposed trust protocol is evaluated using Cooja simulator in Contiki 2.7. Performance evaluation is done for the new system and compared with two objective functions of RPL. Findings: Cooja simulator which is dedicated for simulating IoT environment is utilized to evaluate the proposed system with various performance metrics such as energy consumption, packet loss rate and throughput. From the findings, the proposed system has only 17.1 % to 20.1% average packet loss rate while OF0 has between 72.2 % to 78.1 % and MRHOF has between 67.8 % to 74.07 %. The energy consumption rate of the proposed system is also low which is more promising than the other two. Novelty/Applications: The proposed reliable trust system in this work addressed RPL attacks. As a result, it will be able to preserve stability in the IoT system networks. Hence, it can provide beneficial improvement in securing network routing and performance.