Please answer the problem, showing all steps, and an explanation on how you solved the problem.

(Using Vigenere Cipher) Decrypt the following ciphertext by using Kasiskis attack to determine the code length. The line breaks are for your convenience.

TDYJNJCDAEBARPMZPTFZPDYHPAMWSBBWWWOKTWZJTXLWHMHLP BCNTAUFSBBWHMHSIMMZPTFTTNIJTQNTTKIETIFSLJYHGMMWCB YVIWNZTXLWHQXWCBIXIPYMCQNWSANSIMMAUPYSEXLGKMBWHPU DAACYCQNTJBCXCWNZTABSATLWICLFXBQAIPBAHWVBTKNADVML DBBSIPIMHMCFLPCUWQNKWIFDWIPWDZCYXVULTLQZDABSATYFI MLLWMITYMWLXWHKPBFSGOYGCBBWXZDGJZHSAIHVEZIUTMXLDZ YUDVMASMLAIQZSUBYJHCWZGMWGCACVTZULXWHLLWNZXZXKDNN ZPBBGJAYKWIFDPOLWTBIHPAMLWMVAATCLHPUDAJYKTVNLDOYL WMLOXBBLWMITYMWLXWHKIWNZTWNZTZBGJAYTNEBARPCLHPUDA TCCTECKTJYJTKIFHQXWGMXSCLCXPXJJDDYVQGNODBBAGLMGUB BSIPIMHMCLHPUDAJYUDUYSAIQTJBCFPTFKJKBUPAYKIPYNDBY KDNVGIPBGJAYKHPUDAJYVTBYJBQHWSJSQTIMSCLHSNAUFSBBW CIGWHWZLWMJWGAIFHDILXVAXDZUFSIASXVMLIPYTXTFKWIFDQ MYFIMLWSWHLWMDGJZHSAWZWPKBZDCMWGMMHTKNAKMFQXNUFNJ CDAABSATHGIJYJTBOJCMXTNBBWEZYKXLYFIECLWQHLTVXSNA( MMCLUQHMRUTXNWS)IZLTZCLHPUDAPUNTJYWCXLWHMHLTLNGWQ GLWMMSBMMZPTFTTIFSLQHDXSYEPVHWGIMAUPYZPLMAVVYVXBO FAMMKIPYUDVAJTAMTNBBWXZUVYWOJCUYFIXLWKMHLXBMJTBOJ CQHOWQWZRIMWXBMZPTFFDBVWPTUO