Verifiable mobile online social network privacy‐preserving location sharing scheme. (14th August 2017)

• Record Type: Journal Article
• Authors: Tang, Chunming; Cai, Cailing
• Other Names: Carretero Jesus guestEditor.; Garcia‐Blas Javier guestEditor.; Nakano Koji guestEditor.; Mueller Peter guestEditor.; Grosu Daniel guestEditor.; Zheng Sheng guestEditor.; Xu Li guestEditor.; Xu Zheng guestEditor.; Yen Neil guestEditor.; Sugumaran Vijayan guestEditor.
• Is Part Of: Concurrency and computation. Volume 29:Number 24(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-08-14
• Subjects: mobile online social network -- privacy‐preserving location sharing -- verification; Parallel processing (Electronic computers) -- Periodicals; Parallel computers -- Periodicals; 004.35
• DOI: 10.1002/cpe.4238
• Languages: English
• ISSNs: 1532-0626

Abstract

Summary: With the dramatic growth of smart phones and social network services, location‐based service has become increasingly popular in our daily life, which also brings great privacy leakage about user's location information. Thus, privacy‐preserving location sharing is still a significant problem. In this paper, two models of our scheme are verifiable, supporting location query on homomorphic encrypted ciphertext with searching index and trapdoor. The characteristics of our scheme are that it (1) allows users to share their current location without leaking any location information to the untrusted server; (2) protects users from the cheating of untrusted server's malicious behavior by verifying query result; (3) supports a novel personalized query according to users' classifications of social network friends; (4) the user does not have to be online to make permissions for accessing his shared location, and (5) model 2 does not rely on any trusted third party server to perform any computation. The security analysis shows that it ensures secure location sharing in social scenarios.