These technologies provide some supports of document security and become the mainstream thinking when designing document protection system.

传统的文档保护技术有内容加密技术、访问控制技术等。

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From the system point of view, the file system of document storage space and distribution, responsible for document storage and document deposited in the protection and retrieval system.

从系统角度来看文件系统是对文件存储器空间进行构造和分派仔细文件的存储并对存入的文件进行保护和检索的系统。

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