generated from mwc/lab_encryption
ebec786840
because I could actually test what was happening instead of just guessing. It made it easier to see how encryption and decryption work step by step, and I could quickly fix mistakes when something didn’t work. I had trouble finding the secret word at first because I was only getting numbers when I calculated the shifts. I couldn’t turn that into a readable word, so I used the secret word provided by the professor instead. Then I used that word in PolyCipher to decrypt the message and check that it worked.
8 lines
251 B
Python
8 lines
251 B
Python
from collections import Counter
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from easybits import Bits
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def crack_caesar(ciphertext):
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counts = Counter(ciphertext)
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most_common_char = counts.most_common(1)[0][0]
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shift = Bits(most_common_char).int - Bits(' ').int
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return shift |