A trust-based access control scheme for social networks.

摘要

The personal data being published on online social networks is presenting new challenges in sharing of this digital content. This thesis proposes an access control scheme called Personal Data Access Control , or PDAC, which allows users to share data among their friends, using a trust computation to determine which friends should be given access. This trust computation uses previous interactions among a user's friends to classify his or her peers into one of three protection zones, which determine whether that peer gains access to the user's data. Additionally, the user may designate certain friends as attesters who will aid the user in determining which peers are trustworthy enough to be given access to his or her data. Simulations of the PDAC scheme were performed to evaluate its effectiveness in enforcing data access privileges. The results show that PDAC preserves confidentiality by exploiting the trust that is captured in existing social networks.