Help create a single key permutation cipher in Python

Question

Help create a single key permutation cipher in Python

I'm just starting to learn python, I really need the help of tc. there is not much information on this topic on the Internet, I would be very grateful

(Key - Pelican) (Encrypt-TERMINATOR ARRIVES ON THE SEVENTH AT MIDNIGHT) (Result-GNWEP LTOOA DRNEV TEIO RPOTM BCHMOR SOYI)

0

python-3.x python-3.6 python-3.5

Author: yavis, 2019-09-10

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1 answers

score 2 · Answer 1

def getCipher(origin_key, origin_text):
    clear_text = ''.join(origin_text.split(' ')).lower()
    k = len(clear_text) // len(origin_key)

    cipher = {}
    for index, ch in enumerate(origin_key.lower()):
        if ch in cipher:
            cipher[ch] += clear_text[index * k : index * k + k]
        else:
            cipher[ch] = clear_text[index * k : index * k + k]

    cipher_text = ''.join([''.join([cipher[key][index] for key in sorted(cipher.keys())]) for index in range(k)])
    return ' '.join([cipher_text[index : index + k] for index in range(0, len(cipher_text), k)]).upper()


print(getCipher('ПЕЛИКАН', 'ТЕРМИНАТОР ПРИБЫВАЕТ СЕДЬМОГО В ПОЛНОЧЬ'))
# ГНВЕП ЛТОАА ДРНЕВ ТЕЬИО РПОТМ БЧМОР СОЫЬИ