anchor.diff:      ssl_test_lib:check_server_alert(Server, Client, insufficient_security).
   
   %%--------------------------------------------------------------------
  -
  +supported_groups() ->
  +    [{doc,"Test the supported_groups option in TLS 1.3."}].
  +
  +supported_groups(Config) when is_list(Config) ->
  +    ClientOpts = ssl_test_lib:ssl_options(client_rsa_opts, Config),
  +    ServerOpts = ssl_test_lib:ssl_options(server_rsa_opts, Config),
  +
  +    {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
  +
  +    Server = ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
  +					{from, self()},
  +                                        {mfa, {ssl_test_lib, send_recv_result_active, []}},
  +                                        {options, [{supported_groups, [x448, x25519]} | ServerOpts]}]),
  +    Port = ssl_test_lib:inet_port(Server),
  +    Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
  +					{host, Hostname},
  +                                        {from, self()},
  +                                        {mfa, {ssl_test_lib, send_recv_result_active, []}},
  +                                        {options, [{supported_groups,[x448]} | ClientOpts]}]),
  +
  +    ssl_test_lib:check_result(Server, ok, Client, ok),
  +
  +    ssl_test_lib:close(Server),
  +    ssl_test_lib:close(Client).
  +
  +%%--------------------------------------------------------------------
   handshake_continue() ->
       [{doc, "Test API function ssl:handshake_continue/3"}].
   handshake_continue(Config) when is_list(Config) -> 
  
positive.code:      rizzo_one_n_minus_one 
      ].
  
  init_per_suite(Config0) ->
      catch crypto:stop(),
      try crypto:start() of
  
negative.code: groups() ->
      [
       %%{'tlsv1.3', [], gen_api_tests() ++ handshake_paus_tests()},
       {'tlsv1.3', [], ((gen_api_tests() ++ tls13_group()) -- [dh_params, honor_server_cipher_order, honor_client_cipher_order,
                                          new_options_in_handshake])
        ++ (since_1_2() -- [conf_signature_algs])},
       {'tlsv1.2', [],  gen_api_tests() ++ since_1_2() ++ handshake_paus_tests() ++ pre_1_3()},
  