An Information Security Model Based on Reputation and Integrality of P2P Network

The trust mechanism is researched more in existing P2P literatures, but the access control strategy about information integrality in P2P network is discussed less. In this regard, the integrality grade, and the reputation grade, of the subject and of the object are introduced, and the ideas of existing access control strategy and Biba model are used in the paper. A P2P information security model based on trust and security grade is defined, and is applicable to the network environment of P2P, and the access control strategy in this model is improved and expanded.