Abstract: Data share in Online Social Network OSN is a global event in digital world that enables digital social interactions. OSNs are dominant medium for social interaction experienced by real world to communicate and share data. OSN such as Facebook has several million users worldwide sharing abundant data items in real world. OSN provides security at the user level but no protection over data present outside user level. OSN lacks method to enforce security problems over shared data associated with multiple users in the real world. MPAC model (Multiparty access control model) is formulated to resolve the multiparty authorization issues. The issues not focused by existing access control methods. In addition to this, a voting mechanism, threshold policy added deals with the authorization and security issues. The use of MPAC mechanism enables flexibility of shared data in OSNs greatly reducing authorization and privacy conflicts in digital world.
Keywords: OSN, MPAC model, Voting mechanism, Threshold policy, Access control systems