The user input 10-bit key to encrypt the input plaintext is input in the encrypted ciphertext. The des algorithm simple way to achieve.

S_DES\Debug\S_DES.exe
.....\.....\S_DES.ilk
.....\.....\S_DES.pdb
.....\S_DES\Debug\BuildLog.htm
.....\.....\.....\mt.dep
.....\.....\.....\SDES.obj
.....\.....\.....\S_DES.exe.embed.manifest
.....\.....\.....\S_DES.exe.embed.manifest.res
.....\.....\.....\S_DES.exe.intermediate.manifest
.....\.....\.....\vc90.idb
.....\.....\.....\vc90.pdb
.....\.....\SDES.cpp
.....\.....\S_DES.vcproj
.....\.....\S_DES.vcproj.SuDa-20110828DD.Administrator.user
.....\S_DES.ncb
.....\S_DES.sln
.....\S_DES.suo
.....\.....\Debug
.....\Debug
.....\S_DES
S_DES

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