A trust-based secure routing algorithm for wireless sensor networks

To overcome the threats of internal malicious nodes in wireless sensor networks(WSNs), a trust-based secure routing algorithm is proposed in this paper. It uses μTESLA(micro Timed, Efficient, Streaming, Loss tolerant Authentication) algorithm to ensure that the data should not be tampered by malicious nodes. Using the improved D-S evidence theory to evaluate the trust degree of internal nodes and obtain the optimal route selection. The experimental results show that the algorithm can effectively find and successfully keep away from the malicious nodes in the networks. Moreover, the algorithm can reduce the number of data packets dropped, providing reliable data transmission.