An authorised pseudonym system for privacy preserving location proof architectures

Abstract

An emerging class of Location Based Services (LBSs) needs verified mobile device locations for service provision. For example, an automated car park billing system requires verified locations of cars to confirm the place and the duration of parked cars. Location Proof Architectures (LPAs) allow a user (or a device on behalf of its user) to obtain a proof of its presence at a location from a trusted third party. A major concern in LPAs is to preserve user location privacy. To achieve this a user's identity and location data should be maintained separately with additional measures that prevent leaking sensitive identity and location data. In this paper, we present a privacy preserving LPA in w..