Whenever I connect for the first time to my raspberry pi, a message appears telling me to trust that 'fingerprint'. How do I know that that is my raspberry pi's fingerprint? When I search the web, I only find how to install a public and private key on my raspberry pi, but how does my Pi have a fingerprint if I never installed one? How was this fingerprint generated?
How can I see, at the terminal, which is the fingerprint of my raspberry pi? Does it means my Pi has a private and public key already?