PDF文档，讲述了基于文件系统过滤驱动器的加密软件设计，用于底层加密驱动的编写。-PDF document, described based on the file system filter driver encryption software design, for the preparation of the underlying encryption driver.

基于文件过滤系统的文件加密.pdf，有在用加密的同志读一读，非常有用-File-based filtration system file encryption. Pdf, there are comrades in the use of encryption to read, very useful