东北大学学报(自然科学版) ›› 2022, Vol. 43 ›› Issue (12): 1702-1708.DOI: 10.12068/j.issn.1005-3026.2022.12.005

• 信息与控制 • 上一篇    下一篇

一种基于安全索引的位置隐私保护方法

张晶, 李传文   

  1. (东北大学 计算机科学与工程学院, 辽宁 沈阳110169)
  • 发布日期:2022-12-26
  • 通讯作者: 张晶
  • 作者简介:张晶(1992-),女,辽宁沈阳人,东北大学博士研究生; 李传文(1982-),男,山东烟台人,东北大学副教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(61872071).

A Location Privacy Protection Method Based on Secure Index

ZHANG Jing, LI Chuan-wen   

  1. School of Computer Science & Engineering, Northeastern University, Shenyang 110169, China.
  • Published:2022-12-26
  • Contact: LI Chuan-wen
  • About author:-
  • Supported by:
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摘要: 基于位置的服务(location based services, LBS)为人们日常生活带来极大便利的同时也严重地威胁到用户的隐私.为了在保护用户位置隐私的同时降低用户的查询代价,提出了一种基于安全索引的位置隐私保护方法(location privacy protection method based on secure index, LPPMSI).LPPMSI不需要用户搜集数据信息,数据拥有者为虚假位置信息建立安全索引.用户能够安全、快速地检索到虚假位置信息,服务器再执行基于虚假位置的LBS.并且还提出了基于滑动窗口的候选位置选择算法,有效减少候选位置选择时间.实验结果表明,LPPMSI在不改变隐私保护能力的前提下,不需要用户花费大量时间搜集数据分布及查询概率信息.

关键词: 虚假位置选择;安全索引;空间数据库;基于位置服务;位置隐私保护

Abstract: Location based services(LBS)bring great convenience to people’s daily life, but also seriously threaten user’s privacy. In order to reduce user’s query cost while protecting user’s location privacy, a location privacy protection method based on secure index(LPPMSI)is proposed. LPPMSI does not need user to collect the information about data. Data owner establishes a secure index for the dummy location information. The user can retrieve the dummy location information safely and quickly, and then the server executes the LBS. At the same time, a candidate location selection algorithm based on a sliding window is proposed to reduce the computation time. The experimental results show that the LPPMSI does not require users to spend a lot of time collecting information about data distribution and query probability, under the premise that the privacy protection ability is unchanged.

Key words: dummy location selection; secure index; spatial database; location based service; location privacy protection

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