earticle

영어

Recently user privacy becomes an important security goal in most computer applications especially in context aware services. One of the most popular services in this field is location-based services (LBSs) that deliver the desired data based on the user’s location. Although these services make the life easier, they lead to a privacy risk. To get the desired services, a user should disclose her location; so her location privacy is threatened. In this paper we consider a group of users who wants to use a location-based service while preserving their location privacy. We propose a solution for this scenario and compare it with the previous solution. Analysis of our protocol shows the effectiveness of the proposed approach in terms of computation and communication costs.