Katholieke Universiteit Leuven
In various internet applications, reputation systems are typical means to collect experiences users make with each other. The authors present a reputation system that balances the security and privacy requirements of all users involved. Their system provides privacy in the form of information theoretic relationship anonymity w.r.t. users and the reputation provider. Furthermore, it preserves liveliness, i.e., all past ratings can influence the current reputation profile of a user. In addition, mutual ratings are forced to be simultaneous and self rating is prevented, which enforces fairness.