关键词: P2P网络, 社会网络, 信任, 多域, 访问控制, 多级安全

Abstract: Effective access control mechanism is one of research hotspots in the domain of P2P network, however, the traditional access control mechanisms are not suitable for P2P network, the distributed management system. This paper proposes an access control model of P2P network in multi-domain environments（TMAC）. It adopts the rationale of social network. The nodes of system will be distributed in several domains. By extending the multiple level security mechanism, this model realizes the access control. Before the transaction would be generated between the nodes, according to the trust level of the object node about the resource category, the subject node grants it different access privileges, so that, the goal of system security is achieved. The results of experiment show that this access control model is effective.

Key words: Peer-to-Peer network, social network, trust, multi-domain, access control, multiple level security