Polybius Square Decryptor - Copenhagen Security Summer Camp - KEA

decryptor.py

import re

encrypted = 'ENCODED THINGY HERE'

# Change the cipher accordingly
dict = {
      "13": "E",
      "33": "T",
      "21": "O",
      "53": "N",
      "11": "A",
      "24": "I",
      "22": "S",
      "55": "H",
      "45": "R",
      "54": "L",
      "51": "D",
      "23": "U",
      "34": "Y",
      "31": "C",
      "42": "G",
      "52": "W",
      "35": "F",
      "41": "M",
      "15": "P",
      "43": "B",
      "25": "V",
      "14": "X",
      "32": "K"

}

s = ''

l = re.findall('..', encrypted)
for letter in l:
    s += dict[letter]

print(s)