DFB Kriptanaliz Challenge - Klasik Sifre
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Asil mesaj (polialfabetik / Vigenere sifreli):

NBUMTABCQTFVRFAKHGKLRZITISJXCSZVNGESGJMETJVVVFOFFHRFHLXTTJZRTABKXOLXUWVVNQRRNDGUYGDYFLZGXWJXCDIPYSUJNDAGJJZHRFKGFBUZRJQHDSMIEQKNFWDAVLPIWCLRQLZWYVKLVKUGXGRKRZIUGSVRRFKTDDKIQOQVMOGSYQINUVRFRLQEHWGLRJBQYSJXLGCTFPZPVLGVTFVGBNMTYVVORQCUNBXJEWYWJBTCNFINDGZWXSAKXYZIKSUKSOKMBFIPIWEHRPWHHCZRPALGSQVTNKARMFRWRAAMFGZWXAMPIFVQREJGWHYEGKWWSREIFKUCYHVVFEWTJHYEAKXGJR

Ek satir (basit yer-degistirme, decoy):

WKHGHFRBNHBZRUGLVSDVVZRUGLJQRUHPH

Gorev: asil mesajin anahtarini frekans analiziyle kurtar ve duz metindeki
gizli parolayi (PASSPHRASE...END) bul. Decoy satira kanma.