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中文摘要：
网格安全已成为网格计算的核心问题。大多数的网格体系都只是提供了安全基础设施,而没有规定具体的安全措施实施框架和安全交互过程。结合移动代理技术提出了一个网格安全跨域扩展模型（MA-GSME）,介绍了工作流程及主要实现技术。借助一种数据结构,使移动代理的智能性得以充分发挥,进而在一定程度上解决了网格跨域访问的难题。分析结果表明,新模型在一定程度上增强了网格单点登录的功能,并提高了系统实施跨域访问的透明性及有效性。
英文摘要：
Security has become a key problem in grid environment.For most grid systems,there only is a security infrastructure without a detailed implementation framework or secure cooperation process.Provide a grid security multi-domain extensible model called MA-GSME by using mobile agents,introduce its work mechanism and main implementing technology.By virtue of a kind of data structure,make mobile agents deploy their intelligence adequately and solve the difficult problem of multi-domain access in grid to a certain extent.Analysis results show that the new model enhances the function of single sign-on in grid to a certain extent and heightens the transparence and validity of multi-domain access in grid system.
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