网格环境中服务行为信任机制一直是网格安全研究的热点和重点,而基于实体行为的信任比基于实体身份的信任在实际应用中更具有优势。提出一种基于模糊理论的网格服务行为信任模型,给出了信任值及信任值更新计算方法,较好解决了资源协作中的安全问题,进一步完善了网格安全服务体系。 Trust mechanism of service behavior in grid environment has always been the focus and focus of grid security research. Trust based on entity behavior is more advantageous than entity-based trust in practical application. A trust model of grid service behavior based on fuzzy theory is proposed. The method of calculating and updating the trust value and trust value is given, which solves the security problem in resource collaboration and further improves the grid security service system.