无线传感器网络中基于隐私保护元的数据聚合机制  

Data aggregation based on the privacy-preserving element in wireless sensor networks

作　　者：曾玮妮[1,2] 林亚平[2] 何施茗[2] 余建平[3] 

机构地区：[1]中国船舶重工集团公司第716研究所,江苏连云港222006 [2]湖南大学信息科学与工程学院,湖南长沙410082 [3]湖南师范大学数学与计算机科学学院,湖南长沙410082

出　　处：《通信学报》2012年第10期16-25,共10页Journal on Communications

基　　金：国家自然科学基金资助项目(60973031;60903168);国家教育部博士点基金资助项目(20100161110025);湖南省教育厅资助科研项目(10B062);湖南师范大学青年优秀人才培养计划基金资助项目(ET51102)~~

摘　　要：提出对聚合中的传感数据提供隐私保护的分布式机制。基于同余的代数特性定义了隐私保护元,无需通信即可实现传感数据的隐私性,且聚合值在簇内得以准确还原。给出了隐私保护元生成方法,该方法无需通信,且支持动态变化的聚合节点。分析表明,与集中式机制相比,避免了基站获取隐私数据及单点失效问题,对分组丢失环境有着更强的健壮性,且通信开销更低;与分布式机制相比,在提高隐私保护有效性的同时通信开销更低。A distributed mechanism was proposed to protect the data privacy during the data aggregation phase. The con- tributions of this mechanism are： 1） Privacy-preserving element taking advantage of the algebraic properties of congru- ence was defined. In privacy- preserving elements, privacy data could be preserved without the extra data exchange, and the aggregation result could be recovered from the perturbed data in the cluster head. 2） A flexible method for generating the privacy- preserving element was given. Thus, nodes could generate their privacy-preserving element without the extra data exchange, and the method was adapted to the dynamic reporting nodes. Extensive analysis showed that： compared with the centralized mechanism, the proposed mechanism has a better resistance to data loss, can avoid the single point problem and also consumes less communication overhead; compared with the other distributed mechanisms, the proposed mechanism is able to preserve privacy more efficiently while consuming less communication overhead.

关 键 词：传感器网络 数据聚合 隐私保护 同余 隐私保护元 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TP309[自动化与计算机技术—计算机科学与技术]