Construction of Trust Based Dynamic Access Control Model in P2P Net- work Environment

With the development of society and technology, sharing of resources has become an indispensable component in our life. With its congenital features of high speed, rich resources, strong fault-tolerance and low cost, peer-to-peer (P2P) network occupies an important status in network resources sharing. However, this technology has serious problems in network security, especially in trust management and access control. Therefore, based on the advantage of trust management and Role based access control (RBAC), this study proposed a trust based dynamic access control model in P2P network environment, which allocates general roles by automated trust negotiation, to build dynamic trust relation among strange entities, then the internet calculates users’ trust in real time. General role whose trust is over threshold derives a series of temporary roles with privilege limit set which can access network resources and thus realize the dynamic authorization policy for small control granularity. Subject Categories and Descriptors I.6.4 [Model Validation and Analysis]: RBAC Model; G.2 [Discrete Mathematics] General Terms: Peer-to-Peer, RBAC Mode