Unfortunately, this otherwise nice program doesn't support encrypted keys, there is no way to supply the passphrase: Example: ``` $ rtop <server> rtop: ssh: cannot decode encrypted private keys rtop: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none], no supported methods remain ``` In this case, <server> has a proper entry in ~/.ssh/config, an ssh-agent is running and the encrypted is loaded.