This is a DES encryption and decryption algorithm in C++ using key pairs known expressly encryption

des_example
...........\Debug
...........\des_example.cpp
...........\des_example.dsp
...........\des_example.dsw
...........\des_example.ncb
...........\des_example.opt
...........\des_example.plg
...........\move.txt
...........\Tab01_IP.txt
...........\Tab02_PC_1.txt
...........\Tab03_PC_2.txt
...........\Tab04_Expand.txt
...........\Tab05_S1.txt
...........\Tab06_S2.txt
...........\Tab07_S3.txt
...........\Tab08_S4.txt
...........\Tab09_S5.txt
...........\Tab10_S6.txt
...........\Tab11_S7.txt
...........\Tab12_S8.txt
...........\Tab13_P.txt
...........\Tab14_endIP.txt

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