I had changed the SSH password on something so I had to dig through my known hosts file, and saw the word FUCK spelled out in there in all caps. I chuckled but am sure there’s an explanation
I think you are obligated to share your entire known hosts file to prove this.
The ~/.ssh/known_hosts
file only contains public keys. I mean, maybe someone doesn’t want to hand out the list of hosts that they talk to, but exposing it doesn’t expose the private keys, which are what you really need to keep secret.
Those are in ~/.ssh/id_rsa
or the like, depending upon key type.