let name = self.name().as_bytes();

        s.write_u32::<BigEndian>(name.len() as u32).unwrap();
        s.extend_from_slice(name);

                let name = b"ssh-ed25519";
                s.write_u32::<BigEndian>(name.len() as u32).unwrap();
                s.extend_from_slice(name);

                let name = b"ssh-rsa";
                s.write_u32::<BigEndian>(name.len() as u32).unwrap();
                s.extend_from_slice(name);