21世纪的科学应用需要快速获取大量的数据以及与之相称的计算资源。资源和数据常常分布在广域网中,所有的元素都被各自独立地分区域管理着。计算中可能包括上百个进程,它们需要动态地获取资源以及高效率地通信。文中分析了大规模分布式计算网络——网格(Grid)对安全的要求,阐述了一个安全认证策略和网格的安全基础架构。 The application of science in the 21st century requires rapid access to large amounts of data and commensurate computing resources. Resources and data are often distributed over wide area networks, with all the elements being managed separately and separately. The calculation may include hundreds of processes that require dynamic access to resources and efficient communication. This paper analyzes the security requirements of the large-scale distributed computing network Grid, and expounds a security authentication strategy and grid security infrastructure.