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@@ -1,62 +0,0 @@ |
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import sys |
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import string |
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def rotate(x, y): |
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return (x - y) % 26 |
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def shift(letter, n): |
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x = ord(letter) - ord("A") |
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y = rotate(x, n) |
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return chr(ord("A") + y) |
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def rot13(message): |
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message = "".join([x for x in message if x.isalpha()]) |
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message = message.upper() |
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res = "" |
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for c in message: |
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res += shift(c, 13) |
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return res |
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def decrypt(key, message): |
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message = "".join([x for x in message if x.isalpha()]) |
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message = message.upper() |
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res = "" |
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i = 0 |
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for c in message: |
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x = ord(key[i % len(key)]) - ord("A") |
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res += shift(c, x) |
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i += 1 |
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return res |
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def try_with_key(key, message): |
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res = decrypt(key, message) |
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if "PLEKSZYGLADZ" in res: |
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return res |
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def main(): |
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message = sys.argv[1] |
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print(decrypt('N', message)) |
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""" |
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message = sys.argv[1] |
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letters = string.ascii_uppercase |
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for a in letters: |
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for b in letters: |
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for c in letters: |
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key = a + b + c |
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res = try_with_key(key, message) |
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if res: |
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print(res) |
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print("key:", key) |
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return |
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""" |
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if __name__ == "__main__": |
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main() |