If you use openssh as your ssh server you may want to look at the AuthorizedKeysFile option https://man.openbsd.org/sshd_config#AuthorizedKeysFile https://man.

If you use openssh as your ssh server you may want to look at the AuthorizedKeysFile option https://man.openbsd.org/sshd_config#AuthorizedKeysFile https://man.openbsd.org/sshd_config#AuthorizedKeysFile Other useful options are AuthenticationMethods and AuthorizedKeysCommands.