I need to authenticate the process of serial connection between two Arduino by using a challenge-response authentication mechanism.
I'm going to do it on Arduino Uno. It is a university project,
Note: Because of the comment that I have here I would like to say something. Again and again, I'm not asking for someone to do this for me. I need someone to guide me to the right way to do it. sometimes, when you don't have the experience you waste much time looking for the wrong things, and that I've been done during the last 6 weeks. I'm stock now