vegenere encoding, decoding, wrote it myself, looks like a bit around, you can see

vegenereyu\Debug\vegenereyu.exe
..........\.....\vegenereyu.ilk
..........\.....\vegenereyu.pdb
..........\vegenereyu\Debug\BuildLog.htm
..........\..........\.....\mt.dep
..........\..........\.....\vc90.idb
..........\..........\.....\vc90.pdb
..........\..........\.....\vege.obj
..........\..........\.....\vegenereyu.exe.embed.manifest
..........\..........\.....\vegenereyu.exe.embed.manifest.res
..........\..........\.....\vegenereyu.exe.intermediate.manifest
..........\..........\vege.cpp
..........\..........\vegenereyu.vcproj
..........\..........\vegenereyu.vcproj.WIN-K8NKVCQMH3I.Administrator.user
..........\vegenereyu.ncb
..........\vegenereyu.sln
..........\vegenereyu.suo
..........\..........\Debug
..........\Debug
..........\vegenereyu
vegenereyu

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