The Research Of P2P Trust Model Based Reputation

The development of P2P network is paid more attention gradually and is widely used in various fields in recent years. A lot of trust mechanisms are based on reputation. But the present reputation model are,facing hotspots problems,cant provide different services and be vulnerable to malicious node of the invasion and attack. Solving these problems effectively is the key to trust model. In this paper, focusing on hotspot, different services and malicious nodes problems, the following jobs will be done mainly:1) In view of the current trust model of hotspot problem that some reputable nodes provide service of low-quality and make the network congestion because of overload. The overloaded nodes no longer provide service but recommend other nodes to divert through adding the service threshold. The network will be more smooth and stable.2) Since each user need different service, the providers add resource trust threshold to satisfy it in this paper3) The entire network is scattered and open in the P2P environment. In order to prevent the rapid spread of malicious nodes in the whole network, the nodes which are feedback untruthfully will join in the blacklist and block in the network by adding blacklist mechanism. The new nodes can only provide service at frist, the right of request will be decrded by the the interactive historical experience.4) Focusing on the problems which the current trust models are facing, a kind of mixed trust model is put forword in this paper, which can solve the hotspot, different service and the interference of malicious nodes effectively.In the simulation experiments, the loading balance and the interactive success rate are significantly enhanced under the mixed trust mode and visit hotspot, different service and malicious nodes problems has been solved by comparing with other trust models. It proves that the mixed trust model can improve and optimize the performance of the system obviously.