P2P电子商务环境下的动态安全信任管理模型

Dynamic secure trust management model for P2P e-commerce environments

针对P2P电子商务中的信任评估问题,提出一种基于信任云的动态安全信任管理模型(TCDSTM)。TCDSTM利用云理论来刻画信任及信任等级,然后给出具有抗攻击能力的全局信任度融合算法、节点的类型识别和拓扑重构机制。理论分析和仿真实验一致表明,TCDSTM不仅可以抵御共谋、振荡等恶意攻击,而且大大提高了交易成功率。此外,该模型具有较低的通信开销。

For the trust evaluation problem in P2P e-commerce,a trust cloud-based dynamic secure trust management model（TCDSTM） was proposed.Cloud theory was used to describe the trust and the trust level in TCDSTM.Then an anti-attack global trust aggregation algorithm,the node type identification and topology reconstruction mechanisms were presented.Both theoretical analysis and simulation results show that TCDSTM not only can resist collusion attack,on-off attack and other malicious attacks,but also can improve the success rate of transactions.In addition,TCDSTM has low communication overhead.