Trust Management Model in IoT: A Comprehensive Survey

The Internet of Things (IoT) is a network of interlinked objects, without the need for human involvement these interlinked objects that can gather and transmit data via a wireless network. IoT deals with sensors with the support of the Internet. During the transmission process, it is necessary how to secure the data. When devices are connected to the Internet, there are certain chances of attacks on these devices. We need some security mechanisms for secure communication. The only way to protect the data from attacks is trust management. This paper explains the five dimensions of trust design models, such as adaptability, availability, integrity, privacy, reliability, accuracy, and scalability. Different attacks on IoT devices are discussed, along with their proposed solutions by research community. The focus of this paper is a literature survey on trust management model in IoT. Furthermore, we present the unsolved problems and discuss their effects on IoT models.