中文摘要：

在无线传感器网络（WSNs）安全问题中,节点复制、节点损坏和拒绝服务是其存在的三种主要攻击方式。节点复制攻击方式直接危害传感器节点、破坏力强、对网络安全造成严重影响。现有的多路径路由算法产生的路由路径是确定的,攻击者一旦得到路由算法,便可计算出正确的路由路径,危及经此路径传送的所有信息。基于节点行为信任模型和节点复制攻击检测机制提出了一种改进的随机分散路由算法,有效抵御上述三种攻击,并能实现能量高效利用,延长传感器网络寿命。

英文摘要：

The node-replication attack,the compromised-node attack and the denial-of-service are the main attacks in Wireless Sensor Networks（WSNs）.Node replication attack is different from the routing of external attack.It directly attacks against sensor nodes and has strong destruction and serious impact on the whole network.Existing multi-path routing approaches are vulnerable to such attacks,mainly due to their deterministic nature.So once an adversary acquires the routing algorithm,it can compute the same routes known to the source,and hence endanger all information sent over these routes.In this paper,an improved energy-efficient randomized dispersive routing algorithm based on trust model and node-replication attack checking is proposed,and it can withstand the three above attacks and achieve energy efficient and then prolong network lifetime.