Trust-based secure aggregation in wireless sensor networks

Wireless Sensor networks are often deployed in open environment, thus the networks can be susceptible to their unexpected physical environment and attacks from some adversaries. In addition, sensor devie are limited in resources and vulnerable to node capture, so even a few malicious adversaries can easily compromise sensor devices and inject forged data into the networks to make the networks be in confusion. Therefore, a novel trust management scheme is necessary to distinguish illegal nodes from legal ones, and Alter out malicious nod' deceitful data in the networks. In this paper, to make resilient wireless sensor networks, we propose a secure data aggregation scheme based on trust evaluation model which can Identify trustworthiness of sensor nodes. This model suggests a defensible approach against insider attacks indpiently beyond standard authentication mechanisms and conventional key management schemes.