Example #1
0
def main():
    for i in range(1000):
        key = substitution.getRandomKey()
        message = random_string()
        print('Test %s: String: "%s.."' % (i + 1, message[:50]))
        print("Key: " + key)
        encrypted = substitution.translateMessage(message, key, 'E')
        decrypted = substitution.translateMessage(encrypted, key, 'D')
        if decrypted != message:
            print('ERROR: Decrypted: "%s" Key: %s' % (decrypted, key))
            sys.exit()
    print('Substutition test passed!')
def main():

    for i in range(1000):

        key = substitution.getRandomKey()
        message = random_string()
        print('Test %s: String: "%s.."' % (i + 1, message[:50]))
        print("Key: " + key)

        encrypted = substitution.translateMessage(message, key, 'E')
        decrypted = substitution.translateMessage(encrypted, key, 'D')

        if decrypted != message:
            print('ERROR: Decrypted: "%s" Key: %s' % (decrypted, key))
            sys.exit()

    print('Substutition test passed!')
Example #3
0
def decryptWithCipherletterMapping(ciphertext, letterMapping):
    # Return a string of the ciphertext decrypted with the letter mapping,
    # with any ambiguous decrypted letters replaced with an _ underscore.

    # First create a simple sub key from the letterMapping mapping.
    key = ['x'] * len(LETTERS)
    for cipherletter in LETTERS:
        if len(letterMapping[cipherletter]) == 1:
            # If there's only one letter, add it to the key.
            keyIndex = LETTERS.find(letterMapping[cipherletter][0])
            key[keyIndex] = cipherletter
        else:
            ciphertext = ciphertext.replace(cipherletter.lower(), '_')
            ciphertext = ciphertext.replace(cipherletter.upper(), '_')
    key = ''.join(key)

    # With the key we've created, decrypt the ciphertext.
    return substitution.translateMessage(ciphertext, key, 'D')
Example #4
0
def decryptWithCipherletterMapping(ciphertext, letterMapping):
    # Return a string of the ciphertext decrypted with the letter mapping,
    # with any ambiguous decrypted letters replaced with an _ underscore.

    # First create a simple sub key from the letterMapping mapping.
    key = ['x'] * len(LETTERS)
    for cipherletter in LETTERS:
        if len(letterMapping[cipherletter]) == 1:
            # If there's only one letter, add it to the key.
            keyIndex = LETTERS.find(letterMapping[cipherletter][0])
            key[keyIndex] = cipherletter
        else:
            ciphertext = ciphertext.replace(cipherletter.lower(), '_')
            ciphertext = ciphertext.replace(cipherletter.upper(), '_')
    key = ''.join(key)

    # With the key we've created, decrypt the ciphertext.
    return substitution.translateMessage(ciphertext, key, 'D')