【作者】 余杰； 李舟军； 李梦君；

【机构】 国防科技大学计算机学院； 北京航空航天大学计算机学院；

【摘要】 <正>1 引言网格的分布性、动态性、异构性和可扩展性对网格安全(Grid Security)提出了一系列挑战。网格在实现计算资源、存储资源、数据资源、信息资源、知识资源和专家资源全面共享的同时,也带来了许多更多还原

【Abstract】 The research of trust management in grid security is of great application value. There are time locality and space locality between the interactions among gridentities. We introduce time factor and introduce a time-related two-layer trust model. In our model,global trust model is used in management domain and recommendatory trust model is used between management domains. Further more, the friends and blacklist mechanism is introduced, which reduces the complexity of trustdecision-making. Compared with the previous models,our model evaluates trust relationships between entities more accurately,guarantees the success of legal interaction and reduces the amount of messages.更多还原