P2P电子商务环境下的动态安全信任管理模型

摘要

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.%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小仅可以抵御共谋、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丌销.