HMAC

Part 1: Design and develop a message-based system to encrypt and decrypt messages using an RSA algorithm,
Part 2: On the basis of Part 1 system, you should integrate the HMAC algorithm into your system,
The HMAC has to check message received from Port Macquarie,
If the integrity of the message approved, then decrypt the message,
Else, a message, or false Boolean output.
Discuss the strengths and weaknesses of your system,
You must document your approach with a description of the screenshots.