基于可逆数字水印的无线传感器网络可恢复数据聚合协议

Recoverable Data Aggregation Protocol for Wireless Sensor Networks Based on Reversible DigitalWatermarking

针对无线传感器网络数据安全认证协议的高能耗与传感器节点资源受限的对立问题,文中提出了一种基于可逆数字水印的聚合协议。一方面,在感知节点处,将水印嵌入到感知数据中,对水印数据进行基于椭圆曲线的同态加密,以此保证数据在传输过程中的私密性;在簇头节点处,对接收的数据只进行聚合和转发操作,以此减小网络通信开销;在基站处,通过提取水印对数据进行完整性认证。另一方面,该协议提出了一种基于环的聚合树,从而降低节点的传输能耗,延长网络生命周期。通过理论分析证明了所提协议将水印技术与数据聚合技术进行了更好的结合,具有较好的安全性和较低的计算开销,且能实现感知数据的完整性认证。此外,与同类算法的对比实验表明该协议在通信开销和时延方面都具有一定的优势。

Aiming at the opposition between the high energy consumption of data security authentication protocol and the resource limitation of sensor nodes in wireless sensor networks,this paper proposes an aggregation protocol based on reversible di-gital watermarking.On the one hand,at the sensing node,the watermarking is embedded into the sensing data,and the elliptic curve is used to encrypt the watermarked data homomorphically,so as to ensure the privacy of the data in the transmission process.At the cluster head node,the received data are only performed aggregation and forwarding operations,so as to reduce network communication overhead.At the base station,the watermark is extracted to authenticate the integrity of data.On the other hand,this scheme proposes an aggregation tree protocol based on clustering protocol,which can reduce the transmission energy consumption of nodes and prolong the network lifetime.Theoretical analysis proves that the proposed protocol combines watermarking technology and data aggregation technology better,has good security and lower computation cost,and can realize the integrity authentication of perception data.In addition,experimental results show that,compared with the latest similar algorithms,the proposed protocol has certain advantages in communication cost and delay.