Internet of things networks (IoT) has emerged as promising technology for handling small network based devices. However, its limited resources remain the main concern in implementing this type of networks. Energy one of the main factor of these resources where most of IoT devices depends on batteries. Energy reduction efforts are continuous in different trends; protocol overhead is one of the main topic in this direction. Most recently proposed trust-based security approaches include high overhead in term of energy consumption; however, this overhead is not investigated. In this paper, the energy overhead of recently proposed trust model research is investigated. Three of the main trust models for security purposed is investigated. Results show how protocol overhead can directly affect the energy consumption. It mainly demonstrates that high number of packets exchange in any algorithm can increase the energy overhead. Results shows that low communication overhead algorithm has efficiently reduced the power dissipation and enhance network lifetime .
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