./vigenere_crack.pl crypted.txt 13

CRACKING position   1: 111 = o
CRACKING position   2: 116 = t
CRACKING position   3: 121 = y
CRACKING position   4: 110 = n
CRACKING position   5: 101 = e
CRACKING position   6:  97 = a
CRACKING position   7: 110 = n
CRACKING position   8: 100 = d
CRACKING position   9: 101 = e
CRACKING position  10: 111 = o
CRACKING position  11: 109 = m
CRACKING position  12: 100 = d
CRACKING position  13: 121 = y

CRACKED password: otyneandeomdy