关键词：无线传感器网络；数据聚合；密钥管理；数据验证；网络安全
摘 要：Wireless sensor networks are often deployed in open or even hostile environment,its security problem is very prominent,Data aggregation is easily to be attacked for security during the specific implementation process.In order to reduce the transmission of redundant data and enhance security,this article proposed a secure data aggregation and authentication scheme,.data was gathered according to the mode code,collection data was transmitted in encrypted form which will be selected nodes,ensured the confidentiality of the data; A session key was generated and delaied aggregation and authentication by using counter,ensured the integrity,authenticity and freshness of data during the transmission.The security analysis showed that the program had higher security which resisted the attack initiativly,node compromise attack and select forwarding attack and other malicious behaviors.