Version 1.0

Encoder:
- Prompt for user-input message and key (k value)
- Encode it and output the cipher text

Decoder:
- Prompt for cipher text and key (k value)
- Decode it and output the plain message

Hacker:
- Prompt for user-input cipher message
- Hack it to output the key and the plain message

Full:
- All-in-one