Vigenere Cipher - Encrypt, Decrypt and Crack
Usage:
To cipher a text with a key python vig.py -k somekey -p "some text to cipher"
To de-cipher a text with a key python vig.py -k somekey -c "cipher text goes here"
To crack the key we need a sample clear text and it's ciphered version and to guess the key length...
python vig.py -c "some cipher text" -p "the clear text" -l key_len_int
This will output the key in the length requested, if the length is longer than the key then you will see it repeat if not then try a longer key just in case...
TODO: Remove key length and auto calculate the length