replacement with the right documents encrypted using C language, a simple example, the study is very helpful.

Packet : 803600用置换加密解密.rar filelist
置换
置换\1.txt
置换\2.txt
置换\3.txt
置换\Debug
置换\加密.cpp
置换\加密.dsp
置换\加密.dsw
置换\加密.ncb
置换\加密.opt
置换\加密.plg
置换\置换.dsw
置换\置换.ncb
置换\置换.opt
置换\解密.cpp
置换\解密.dsp
置换\解密.dsw
置换\解密.ncb
置换\解密.opt
置换\解密.plg

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