基于私有云信任度量的对等网络节点安全互联模型

Private Cloud Assistant Trust Model for P2P Secure Transactions

在缺乏必要信任关系的对等网络环境中,节点的安全互联对系统的稳定运行具有重要意义。针对对等网络存在的信任缺陷,借助私有云平台在计算与存储过程中的高效性、安全性等特点,提出一种私有云协助的对等网络信任度量模型。该模型基于主观逻辑理论对连接过程中的节点可信度进行度量,针对网络环境中存在的低质量服务、节点虚假推荐及策略性欺骗等问题开展研究,提出了应对机制。实验仿真结果表明,提出的模型具有较好的可行性、有效性和动态适应性。

Secure transactions among P2P peers are critical for system stability. Considering existing security breaches, a private cloud assistant trust model for P2P session negotiation and connection was proposed. With a few characteristics during computing and storage process （e.g. high efficiency, security, neutrality）, private cloud platform is capable to provide trustworthiness calculation, storage and evaluation for each peer in P2P network. Some coping mechanisms were proposed to curb malicious behaviors, such as low quality services, false recommendation and strategic fraud attaches. Simulation result shows that the proposed model has feasibility, efficiency and dynamic adaptability.