A Privacy-Preserved Joint Group Time Scheduling Mechanism for Mobile Social Applications

In this paper, we develop a privacy preserving mechanism for a scheduling service for a group of users, which can compute the joint available time based on users´ calendar information. We also propose a weighted voting game with partially homomorphic encryption (WVGPHE) scheme to protect the privacy of users´ calendar information as well as users´ weight. Even with the privacy protection, our experimental results show that the proposed scheme is still very computational and bandwidth efficient enough to provide immediate group meeting in mobile communications environments.