Description: The basic principles of the DES work, the entrance to the three parameters: key, data, mode. key for encryption decryption key data encryption and decryption of data, the mode of its working mode. mode encryption mode expressly grouped in accordance with 64 formed expressly Group, the key used for data encryption, when the mode is decryption mode, the key used to decrypt the data. DES process is: prior to encryption, the first plaintext is divided into 64 grouping, and then the 64-bit binary code input to the password in the first 64 yards of the password input initial replacement, and 64 of the master key 16 subkeys under the control of the 16 product transformation, followed by the end of replacement, you can get 64 encrypted ciphertext.
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源文件\ceshi.txt
......\ceshijieguo.txt
......\Debug\main.exe
......\.....\main.ilk
......\.....\main.obj
......\.....\main.pch
......\.....\main.pdb
......\.....\vc60.idb
......\.....\vc60.pdb
......\des.cpp
......\des.h
......\main.cpp
......\main.dsp
......\main.dsw
......\main.ncb
......\main.opt
......\main.plg
......\Debug
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