无线传感器网络中一种安全的数据汇聚与认证协议

无线传感器网络的能量资源有限,用数据汇聚来最小化传输量是减少能耗的最重要的技术之一,但数据汇聚也带来了信息泄露的风险。提出了一种名为SEDAA的安全节能的数据汇聚和认证协议。将采集的数据映射成无物理意义的模式码,根据模式码进行数据汇聚,再将被选中的采集数据以加密形式传输,保证了数据的机密性;利用会话密钥进行延迟汇聚和延迟认证,保证了传感器节点数据的完整性和真实性;采用!TESLA协议对基站消息进行认证;采用计数器生成会话密钥保证了数据的鲜活性。SEDAA可以抵御植入节点攻击和重放攻击,可部分解决妥协节点攻击。

Secure Data Aggregation and Authentication Protocol for Wireless Sensor Networks

Data aggregation techniques can greatly help conserve the scarce energy resources in sensor networks by minimizing the number of data transmissions.Conventional data aggregation methods are vulnerable,as cluster-heads receive all the data from sensor nodes and then eliminate the redundancy by checking the contents of the data.A Secure Energy-efficient Data Aggregation and Authentication Protocol called SEDAA is presented.Intermediate nodes,i.e.cluster-heads in each levels,implement data aggregation based on pattern codes without leaking the contents of the raw data and only distinct data in encrypted form is transmitted from sensor nodes to the base station,so SEDAA is confidential.Data integrity and authentication exploit two main ideas:delayed aggregation and delayed authentication.The μTESLA is adopted for authentication of messages transmitted by the base station.Data freshness is gained by using session keys calculated by counters.SEDAA can defend against intruder node attacks and replay attacks,and can limit the effectiveness of compromised node attacks.