You can associate, modify, or delete a public key to manage a user's authentication.
You can manage public keys in the following ways:
Multiple public keys are allowed for a user account.
You can also overwrite an existing public key with the one you are loading.
To create or modify a public key or load a public key from a URI, your user account must be configured with the publickey login method (security login create command with the -authmethod parameter set to publickey).
You use the security login publickey commands to manage public keys. For information about these commands, see the appropriate man pages.