DES is an iterated block cipher, it uses 56 bits encryption key 64 bits 64 bit length plaintext ciphertext. Its round function is using the Feistel structure, iterative rounds to 16.

DES\Debug\DES.exe
...\.....\DES.ilk
...\.....\DES.obj
...\.....\DES.pch
...\.....\DES.pdb
...\.....\StdAfx.obj
...\.....\vc60.idb
...\.....\vc60.pdb
...\DES.cpp
...\DES.dsp
...\DES.dsw
...\DES.ncb
...\DES.opt
...\DES.plg
...\ReadMe.txt
...\StdAfx.cpp
...\StdAfx.h
...\Debug
DES

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