Processing Private Queries based on Distributed Storage in Location-Based Services
With the rapid development of global positioning system,cellular networks and relative technologies,people can request location-based services(LBSs)from the service provider using a handheld device quickly and easily.This greatly facilitates people's life.How-ever,it brings a lot of privacy leakage problems.To reduce it,many methods have been proposed.But,they still don't balance the in-tensity and efficiency of privacy protection very well.Based on distributed storage and the quadratic residual theorem,this paper proposes a LBS user privacy protection scheme with both security features and efficiency.The traditional encryption method,private information retrieval(PIR),will bring high communication cost and computing pressure on the server side.A distributed storage system architecture can greatly reduce network overhead and the risk that the server will identify the user's real location because requests can be answered by the caching proxies without arriving at the server.To enable encrypted requests to be answered correctly by the caching proxies without being known by proxies,we build an index table.Compared with the similar work,simulation results show that our scheme can effectively reduce user communication and server computing overhead.
privacy preserving location-based service distributed storage en-cryption
Han Wang Yang Qin Zechao Liu Yibing Li
Computer Science Department Harbin Institute of Technology,Shenzhen Shenzhen,China
国际会议
2019国图灵大会(ACM Turing Celebration conference-China 2019 )
成都
英文
327-332
2019-05-17(万方平台首次上网日期,不代表论文的发表时间)