code: public byte[] getEncoded() throws SshException {
  
  		try {
  			return cert.getEncoded();
  		} catch (Throwable ex) {
  			throw new SshException("Failed to encoded key data",
  					SshException.INTERNAL_ERROR, ex);
  		}
  	}
docs: Encode the public key into a blob of binary data, the encoded result will
  be passed into init to recreate the key.
  
  @return an encoded byte array
  @throws SshException
  @todo Implement this com.sshtools.ssh.SshPublicKey method