Research on security authentication of hierarchy distributed Wireless Sensor Network

The characteristics of Wireless Sensor Network (WSN) determine that the traditional security authentication mechanism can not meet its security requirements. Starting from the analysis on existing WSN security authentication solution scheme and combing with the widely used hierarchy distributed WSN architecture, the paper referred to the idea of security authentication of PKI with digital certificate and brought out a kind of hierarchy distributed WSN security authentication mechanism. The certificate structure as well as identity and data origin authentication with certificate were designed. The update scheme of certificate and sharing keys was also provided.