The use of Internet of Things is increasing as it is understood by people.Internet of Things makes the physical world combine tightly with network world.Meanwhile,great challenges for privacy security technology have been brought about along with the development of Internet of Things as well.In this paper we enumerate in detain the privacy protection protocols at home and abroad for radio frequency identification (RFID)systems and for wireless sensor networks (WSN)in perception layer of Internet of Things’architecture with the emphasis putting on WSN data privacy protection protocol.We analyse all the protocols in the paper by means of comparative analysis method and qualitatively analyse the advantages and disadvantages of each one,and point out the development tendency of privacy security technology as well.According to the comprehensive analysis,it is concluded that the data aggregation approach has superior performance and wider application range in data privacy protection.%随着人们对物联网的认识,对它的使用也随之增加。物联网使得物理世界紧密地同网络世界相联系。与此同时,随着物联网的发展,对隐私安全技术带来了极大的挑战。详细列举国内外物联网体系结构中感知层中射频识别(RFID)系统和无线传感器网络(WSN)的隐私安全保护协议,重点描述 WSN 数据隐私保护方法。使用对比分析法对协议进行分析,并且定性分析协议的优缺点,指出物联网隐私保护技术的发展趋势。综合分析得出,数据聚合方法在数据的隐私保护方面性能优越,应用范围更广。
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