A Personal DRM Scheme Based on Social Trust

Existing commercial Digital rights manage- ment (DRM) schemes are not suitable for personal content protection because of centralized architecture and rigid constraints. To enable secure and flexible sharing of sensi- tive personal content, a new DRM scheme is proposed in this paper. Social trust between content sharers is mod- eled as computable concepts with DRM related contexts; based on the trust model, decentralized DRM architec- ture and scalable content sharing protocols are presented. Using the proposed DRM scheme, personal content own- ers can perform authentication and authorization without the intervention of Trusted authority (TA); by perform- ing content sharing recommendations, authorized content users can conditionally have content shared with friends. Prototype implementation and simulation experiments in- dicate that the proposed scheme achieves satisfactory se- curity and usability.