Comment by TrailMixRaisin

I get this as a hobby but I fail to find any "attack scenarios" where this is relevant. Public keys are the most public thing I can think of. Without a public key you cannot check if a signature is valid. I cannot see any scenario where a person might use its private key to sign something and not wish everybody else to have the corresponding public key to verify it. I wish the author had made some examples when this gets relevant and when I have to design my protocols accordingly.