The Trust-Based Access Control Model in the Wireless Sensor Network<bold> </bold>

With the rapid development of the wireless sensor networks (WSNs), a lot of sensitive and privacy data need to be protected. How to keep the illegal users from accessing these data, controlling the access behaviors of users and providing a limited service is one of the most important problems that the wireless sensor networks must solve. In this paper, an access control model which is based on ring signature and trust management is proposed in the wireless sensor network. In order to protect against external attack, we use the ring signature to guarantee the privacy access control of wireless sensor networks. In addition, we propose a method of computing trust value based on similarity, which can be used to control the access of each node in the sensor network by means of the combination of direct trust and indirect trust. At last, the model is analyzed qualitatively. Result shows that the model has been improved in terms of generality and security compared to the previous models.<bold> </bold>