Netinfo Security ›› 2021, Vol. 21 ›› Issue (3): 26-36.doi: 10.3969/j.issn.1671-1122.2021.03.004

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Privacy Protection Scheme Supporting Interval Query for LBS Outsourced Data

ZHOU Yousheng1,2(), WANG Ming1, LIU Yuanni2   

  1. 1. College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
    2. College of Cyber Security and Information Law, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2020-11-15 Online:2021-03-10 Published:2021-03-16
  • Contact: ZHOU Yousheng E-mail:zhouys@cqupt.edu.cn

Abstract:

With the rapid development of cloud computing technology, more and more LBS services are being outsourced to the cloud to reduce local computing and storage costs. However, cloud servers are generally considered to be a semi-trusted entity in outsourced environment, the data security of LBS providers and the personal privacy of users will face new security challenges. In view of the fact that the absence of interval query and sufficient privacy protection in the existing LBS data outsourcing using cloud computing, a LBS interval query scheme with privacy protection features is proposed. Asymmetric scalar-product-preserving encryption and public key searchable encryption are used to encrypt LBS coordinates and point interest keywords to realize the confidentiality of LBS data and the user query mode. Lightweight matrix computing enables users to accurately obtain LBS data without revealing query intervals. In terms of new user registration, the bilinear pairing operation structure is adopted to realize user identity authentication. The performance analysis demonstrates that the proposed scheme has some advantages over existing similar schemes.

Key words: privacy protection, location-based service, interval query, outsourcing computing

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