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A Hybrid Approach for Privacy Preservation in Location Based Queries

  • Zhengang Wu
  • Liangwen Yu
  • Jiawei Zhu
  • Huiping Sun
  • Zhi Guan
  • Zhong Chen
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7901)

Abstract

With rapidly popular location-aware applications, location privacy becomes an emerging issue. This paper studies how to protect the two-fold privacy for both client-side and server-side in location-based queries. This technique is a significant component in privacy-friendly Location Based Services (LBS). Participants protect their own privacy. The LBS server protects against excessive disclose of location records in its Points of Interest (POIs) database while the mobile user protects his exact location by the cloaking technique. The proposed hybrid approach can achieve the challenging goal. Our solution integrates the cloaking technique with a cryptographic protocol, Private Set Intersection (PSI). In addition, this solution is secure in malicious model and also practical.

Keywords

Location privacy Location Based Services privacy-preserving protocols Private Set Intersection Homomorphic Encryption 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Zhengang Wu
    • 1
  • Liangwen Yu
    • 1
  • Jiawei Zhu
    • 1
  • Huiping Sun
    • 1
  • Zhi Guan
    • 1
  • Zhong Chen
    • 1
  1. 1.Institute of Software, EECS, MoE Key Lab of High Confidence Software Technologies (PKU), MoE Key Lab of Network and Software Security Assurance (PKU)Peking UniversityBeijingChina

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