Location Privacy Protection Method with Route Constraints
Han Jiang, Hequn Xian, Dalin Yang, Han Jiang · 2024
A location privacy protection method based on route constraints is proposed for the use of location-based services in vehicular networks. This scheme proposes a system architecture based on semi trusted third-party services, which stores user private information separately on three parties. Even if attackers acquire some information, they still cannot obtain the complete private information of the user, thus effective resists single point attacks from attackers. In addition, a dummy location selection algorithm based on route constraints and query history is proposed, which improves the privacy protection by maximizing physical dispersion, and location difference. The proposed method does not require any reliable third-party server, which can protect vehicle location privacy against inference attacks using route information, service record, and other auxiliary information. Security and cost analysis was conducted on the proposed method. The experimental results showed that this method can ensure the uncertainty and physical dispersion of dummy locations, improving the effectiveness of dummy locations, and effectively protect vehicle location privacy.