在线策略，用于加密写到文件系统的数据，以及通过访问控制保护数据。
An online policy is used for encrypting data written to a file system and protecting data with access control.
当把在线策略应用到目录时，它将控制对该目录下的文件和子目录的访问。
When an online policy is applied to a directory, the policy controls access to files and directories under the directory.
通过对智能卡结构详细的分析，提出针对一卡通系统的文件结构设计方案和文件访问权限控制策略，并对智能卡的安全问题进行了分析，提出了相应的解决思想。
Through the detailed analysis of the smart card architecture and safety, the article advance a valuable resolution for the smart card file architecture designing and file access control setting.
通过对智能卡结构详细的分析，提出针对一卡通系统的文件结构设计方案和文件访问权限控制策略，并对智能卡的安全问题进行了分析，提出了相应的解决思想。
Through the detailed analysis of the smart card architecture and safety, the article advance a valuable resolution for the smart card file architecture designing and file access control setting.
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