1.程序的设计思路

该程序用于对一个文件夹下的所有文件进行扰乱，使程序打不开（文本文件除外）。

扰乱算法，是把每个源文件的头部500字节保存到一个目的文件中，并记录该源文件文件名于目的文件中，源文件中的头部500字节用0代替。而目的文件为每个源文件提供的1k的固定长度存放头部500字节和源文件的文件名，源文件的修改后文件名为其信息在目的文件中的偏移序号，并且以.trick为后缀。

复原算法，就是以上过程的逆过程。

另外，考虑到文件扰乱的权限问题，本程序在执行扰乱时需要设置口令，执行复原时需要输入口令。-1. The design ideas for the program to a folder of all documents disruption, that process can not be opened (except for text files). Disrupt algorithm, is the source of each document in the head 500 bytes to preserve a purpose document, and the record of the source file name to its purpose document, the source of 500 bytes with the head instead of 0. The purpose document for each source document for the 1k fixed length of 500 bytes stored on his head and source files, and the source document after document, entitled amend its information in the document aims offset serial number, and to. trick for the suffix. Recovery algorithm, the above process is the reverse process. Moreover, given the document's power to disrupt, the proceedings at the disruption in the implementation of the need