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paced/substitution.py

Last active November 13, 2017 23:17
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Very simple Python code for breaking substitution ciphers.
Raw
substitution.py
from string import maketrans
def decrypt(in, out, test):
"""
Given a plaintext input, encrypted output, and an encrypted test string, return a
decrypted test string. This will only work for a substitution-style cipher.
"""
cipher = maketrans(out, in)
return test.translate(cipher)
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