1. For encoding, input the message in the message box:


2. Set the encoding options:


3. Enter a key:


4. Encode the message:


5. Convert output to all uppercase:


6. Double key encryption:


7. Encode with the two keys:


8. For decoding, input the encryption in the message box and the supply key:


9. Choose the proper decoding options:


10. Decode to get the message: