How do I issue new public key to my servers

Folks:

I do not mean the ssh key for logging into ssh for my servers.

That's simple. Go into the lish console, change the sshd conf, log in to my account using the password, and replacing my desktop's entry in the authorized_keys file. That works fine.

However, when I created each linode, there was a place on the creation form to enter a key.

It's that key I need to replace.

I had inadvertently deleted my private/secret key for that key and I need to replace it.

Thank you

Mark Allyn