Lightweight Trust Model with High Longevity for Wireless Sensor Networks

Abstract

Due to their inherent features Wireless Sensor Networks (WSNs) are vulnerable to many security threats. Moreover, traditional security mechanisms cannot be directly used in WSNs as they present constrained resources in terms of communication, computation and energy. Trust management models have recently been suggested as an e ective security mechanism for WSNs. The already found solutions are very expensive in terms of energy and memory, which seriously affects the lifetime of such networks. In this paper, we will present a lightweight trust management model, which guarantees the reliability and robustness of the network, seeking to increase its lifetime compared to existing models.