Function main

ciphers/vigenere_cipher.py:4–17

()

LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

def main():
    message = input('Enter message: ')
    key = input('Enter key [alphanumeric]: ')
    mode = input('Encrypt/Decrypt [e/d]: ')

    if mode.lower().startswith('e'):
        mode = 'encrypt'
        translated = encryptMessage(key, message)
    elif mode.lower().startswith('d'):
        mode = 'decrypt'
        translated = decryptMessage(key, message)

    print('\n%sed message:' % mode.title())
    print(translated)

def encryptMessage(key, message):
    '''