Authenticate with an X.509 certificate
In Full mode the certificate is sent to the server. This mode assumes that the server can handle certificate authentication.
In Key-only mode only the keypair is used. This works with servers that don't support certificates. To use key-only mode you need to set CertAuthMode property of the component to TSBSSHCertAuthMode.camRawPublicKey .
After doing the above please follow the instructions for key-based authentication.