Location sharing with secrecy guarantees in mobile social networks
| Vortragende(r) | Yifan Bao | |
|---|---|---|
| Vortragstyp | Proposal | |
| Betreuer(in) | Gabriela Suntaxi | |
| Termin | Fr 1. März 2019 | |
| Vortragssprache | ||
| Vortragsmodus | ||
| Kurzfassung | With the increasing popularity of Location-based services and mobile
social networks, secrecy concerns have become one of the main worries due to location information exposure. The challenges in location sharing in mOSNs regarding secrecy are manifold: 1. How to offer location secrecy guarantees? 2. How to offer relationships secrecy guarantees? 3. How to conduct location-dependent queries while guaranteeing 1 and 2? Until now, several solutions have been proposed to preserve user’s privacy in mOSNs. However, we consider that the protection of user’s privacy in these previous solutions can still be improved. We propose a location sharing system achieving enhanced privacy by introducing a new untrusted third-party server called access control server. We solve the problem of privacy-preserving location sharing by using broadcast encryption and Fully Homomorphic Encryption. While guaranteeing location secrecy and relationships secrecy, our system supports one type of query that users in mOSNs are interested in is who are my nearby Friends. | |