Enhanced Location Privacy Preserving Scheme in Location-Based Services

Abstract

With the increasing popularity of mobile communication devices loaded with positioning capabilities (e.g., GPS), there is growing demand for enjoying location-based services (LBSs). An important problem in LBSs is the disclosure of a user's real location while interacting with the location service provider (LSP). To address this issue, existing solutions generally introduce a trusted Anonymizer between the users and the LSP. However, the introduction of an Anonymizer actually transfers the security risks from the LSP to the Anonymizer. Once the Anonymizer is compromised, it may put the user information in jeopardy. In this paper, we propose an enhanced-location-privacy-preserving scheme for the LBS environment. Our scheme employs an entity, termed Function Generator, to distribute the spatial transformation parameters periodically, with which the users and the LSP can perform the mutual transformation between a real location and a pseudolocation. Without the transforming parameters, the Anonymizer cannot have any knowledge about a user's real location. The main merits of our scheme include the following: 1) no fully trusted entities are required, and 2) each user can obtain accurate points of interest while preserving location privacy. The efficiency and effectiveness of the proposed scheme are validated by extensive experiments. The experimental results show that the proposed scheme preserves location privacy at low computational and communication cost.Index Terms-Hilbert curve, K-anonymity, location-based service (LBS), location privacy, privacy preserving.

MADPTM: Mix zones and dynamic pseudonym trust management system for location privacy

“…KEYWORDS location privacy, road network, trust management 1 | INTRODUCTION Nowadays, location-based services are using a number of applications such as GPS, WLAN, mobile technologies, and various other devices to achieve exact location information of user, mobile terminal, and road side unit (RSU) to provide location information for location-based server through the wireless networks. 1 Due to popularity of wireless technologies, dominant social networks such as vehicular social network, vehicular ad hoc network, and mobile social network are rapidly growing in terms of size and popularity and other factors. In numerous social networks, users can easily exchange information with each other conveniently and share information rapidly due to social networks.…”

“…Due to the infrastructure cost and privacy problem, to cover all areas of roads with numerous RSs is a significant challenge . In road network area, we place mix zones inside of mix zone mobile.…”

“…Due to the infrastructure cost and privacy problem, to cover all areas of roads with numerous RSs is a significant challenge. 1 In road network area, we place mix zones inside of mix zone mobile. Vehicles easily change their pseudonyms; also, out of mix zone mobile can easily change their pseudonyms through the RS and all mix zones connect to RS and RS.…”

Security and Privacy in Location-Based Services for Vehicular and Mobile Communications: An Overview, Challenges, and Countermeasures

“…An enhanced location privacy scheme is proposed in [107]. In this approach, the LBS provider and the user carry out a mutual transformation between the pseudo-location and the real location.…”

Location Privacy Protection Research Based on Querying Anonymous Region Construction for Smart Campus

“…e location privacy protection in LBS has attracted the extensive attention of researchers [5][6][7][8].…”