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from random import random |
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from math import floor |
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4
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from st2actions.runners.pythonrunner import Action |
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6
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__all__ = [ |
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'SubSolver' |
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8
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] |
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9
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10
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ALPHABET = list('ABCDEFGHIJKLMNOPQRSTUVWXYZ') |
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12
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13
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def _gen_cipher_mapping(): |
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cipher = [] |
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alphabet = list(ALPHABET) |
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for letter in ALPHABET: |
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random_letter = int(floor(random() * len(alphabet))) |
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mapping = (letter, alphabet.pop(random_letter)) |
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cipher.append(mapping) |
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return cipher |
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def _get_cipher_mapping(cipher): |
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cipher_map = [] |
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alphabet = list(ALPHABET) |
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for _ in range(len(ALPHABET)): |
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mapping = (alphabet.pop(0), cipher.pop(0)) |
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cipher_map.append(mapping) |
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return cipher_map |
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def _get_cipher(cipher): |
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cipher_text = [] |
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for _, mapping in cipher: |
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cipher_text.append(mapping) |
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return ''.join(cipher_text) |
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def _encrypt_letter(letter, cipher): |
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if letter == ' ': |
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return ' ' |
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50
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51
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for plain_text, cipher_text in cipher: |
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if letter == plain_text: |
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return cipher_text |
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56
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def _decrypt_letter(letter, cipher): |
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if letter == ' ': |
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return ' ' |
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60
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for plain_text, cipher_text in cipher: |
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if letter == cipher_text: |
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return plain_text |
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64
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def _encrypt_text(text, cipher): |
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encrypted_text = [] |
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text_list = list(text) |
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69
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for letter in text_list: |
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encrypted_text.append(_encrypt_letter(letter, cipher)) |
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return ''.join(encrypted_text) |
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def _decrypt_text(text, cipher): |
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decrypted_text = [] |
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text_list = list(text) |
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for letter in text_list: |
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decrypted_text.append(_decrypt_letter(letter, cipher)) |
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return ''.join(decrypted_text) |
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84
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85
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class SubSolver(Action): |
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def run(self, encode, message, cipher=None): |
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if encode: |
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cipher_map = _gen_cipher_mapping() |
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cipher = _get_cipher(cipher_map) |
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cipher_text = _encrypt_text(message, cipher_map) |
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91
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92
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result = { |
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'cipher_text': cipher_text, |
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'cipher': cipher |
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} |
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96
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return result |
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98
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99
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else: |
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cipher_list = list(cipher) |
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102
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cipher_map = _get_cipher_mapping(cipher_list) |
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result = { |
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'message': _decrypt_text(message, cipher_map) |
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} |
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return result |
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StackStorm /
st2contrib
