Multi-hop Encryption Protocol for Wireless Sensor Network

With the large growth of wireless sensor network, the current security architecture couldn´t solve the problems This paper provides a multi-hop encryption model which has the independent key exchange and data transmission. With the base station to collect runtime information of mobile nodes, it gives a method for how to select credible nodes in runtime Then two algorithms are proposed for security and stability when choosing the node. At last, the performance loss is measured for multi-hop encryption protocol. Meanwhile, the Improvement and probability of filtering malicious node is discussed by experiment results.