无线传感器网络中数据融合隐私保护方法研究【毕业论文】.docxVIP

无线传感器网络中数据融合隐私保护方法研究摘要无线传感器网络(Wireless Sensor Network, WSN)是由大量存储、能量、计算以及通信能力受限的传感器节点组成的网络。节点与节点之间相互协作周期性地获取感测数据、处理数据以及传输数据，最后将数据的融合结果发送到汇聚节点，由汇聚节点发送至后台进行分析处理。为了降低感测数据的发送量，在实际应用中往往采用数据融合技术将采集到的原始数据进行去除冗余处理，以达到减少通信开销和提高信息收集效率的目的。但是，在实际应用过程中存在着严重的隐私数据泄漏或被篡改的风险，攻击者可以通过窃听、加入伪造或非授权的融合节点等方式获取敏感信息。进行数据融合时，如果不采用任何措施，融合节点将知道普通节点的感测数据，这将破坏节点的隐私。为了保护数据融合过程中的隐私，本文提出一种安全的 WSN 数据融合隐私保护方法，该方法采用加法同态加密技术，在数据融合时，可对密文直接进行数据融合，而无需解密，从而保护节点数据的隐私，且计算开销与通信开销小，能耗低，利用复数的特殊数据结构，保护数据的完整性，使得在保证数据隐私的同时保证数据的可靠。仿真结果和理论分析表明，本文提出的方法在满足隐私保护性的前提下，与 IPHCDA 和 iPDA算法相比，计算开销更小、通信量更少、精确度更高，而且完整性可验证。关键词：无线传感器网络，数据融合，隐私保护，完整性，同态加密iRESEARCH ON PRIVACY-PRESERVING DATA AGGREGATION METHODIN WIRELESS SENSOR NETWORKSABSTRACTA wireless sensor network (Wireless Sensor Networks, WSN) is an ad-hoc network composed of many sensor nodes which generally only have limited storage, power, computation and communication capabilities. Through mutual cooperation, sensor nodes periodically acquire sensed data, process data and transmit data, and finally send the data aggregation result to the sink node which last transmits them to server for analysis and processing. In order to reduce the data transmission, data aggregation technique has been widely used in practical applications to reduce redundance for reducing communication cost and improving data collection efficiency. However, there are serious risks of leakage or being tampered for privacy data in practical application process, because attacker can access to sensitive information through hacking, joining forged or unauthorized nodes.When data is aggregated, if you do not take any measures, the aggregation node will know sensed data of common node, which will destroy the nodes privacy. In order to protect the privacy of the data aggregation process, we propose a secure privacy protection WSN data aggregation method, which uses addition homomorphic encryption technology, can direct the ciphertext data aggregaton, without decryption, thereby node data privacy protectio