P2P网络环境下的推荐信任模型方案

Recommendation Trust Model Scheme for P2P Network Environment

针对对等(P2P)网络的匿名性和动态性带来的安全问题以及传统的信任管理模型并不能很好地适应对等网络环境,提出了一种基于推荐的P2P网络信任模型.首先定义了节点的信任度,然后根据节点的直接信任值、其他节点的推荐信任值和相应的惩罚值来计算节点的信任度,最后提出了基于推荐的信任模型的实现策略.仿真实验表明,基于推荐的信任模型能有效评估节点的信任度,交易成功率优于传统的信任管理模型.

The traditional trust manage model can not satisfy the P2P environment commendably. A recommendation-based trust model in P2P network is proposed. The peer＇s recommendation degree is defined, and then the peer＇s trust value is assessed according to the direct trust value, the other peer＇s recommendation trust value and the corresponding penalty value. The implement strategy of recommendation-based trust model is also proposed. Simulations show that the recommendation-based trust model is able to assess the peer＇s trust value more effectively, surpass the traditional trust management model in the transaction success ratio.