适用于无线传感器网络的数字水印技术

Digital Watermarking Technique Applied to Wireless Sensor Networks

针对无线传感器网络的数据安全问题,提出了一种适用于无线传感器网络的数字水印技术,并设计了水印的生成、嵌入和检测算法.该算法通过水印信息标识发送方节点的身份,将水印信息嵌入到节点采集的数据中进行发送,并在数据融合的过程中保留这种信息.接收方节点通过验证水印信息来判断数据的可靠性,一旦检测到了水印信息则进行存储和转发,使水印信息的数据不被丢弃.通过分析和实验验证,结果表明:该算法可以有效地验证数据的可靠性,水印信息在数据抽样和汇总中不被破坏,具有较好的可行性和实用性.

In order to solve data security issues in wireless sensor networks,a digital watermarking technique applied to wireless sensor networks was proposed.And the algorithms for watermark generation,embedding and detecting were designed.According to the algorithms,the identity of the sending node was recognized by watermarking information.The watermarking information was embedded into the sent data,and was retained in the process of data aggregation.The receiving node judges the reliability of data by verifying this watermarking information.Once the watermarking information was detected,the data would be stored and transmitted.Otherwise the data would be discarded.Analysis on the security and energy consumption of the algorithms and experimental results show that these algorithms are feasible and practicable.The data reliability can be verified effectively and the watermarking information can not be destroyed in the process of sampling and summarization.