anchor.diff:  %%    Finished            (server) (20)
   %%    Certificate         (client) (11)
   %%    CertificateVerify   (client) (15) - Drop! Not included in calculations!
  -get_handshake_context({[<<15,_/binary>>|Messages], _}) ->
  -    Messages;
  +get_handshake_context_cv({[<<15,_/binary>>|Messages], _}) ->
  +    Messages.
  +
  +
  +%% Get handshake context for traffic key calculation.
  +%%
   %% Client is authenticated with certificate:
   %%    ClientHello         (client) (1)
   %%    ServerHello         (server) (2)
  
positive.code:             State1 = calculate_traffic_secrets(State0),
              State = ssl_record:step_encryption_state(State1),
              {error, {{handshake_failure,
                        "CertificateVerify has a not supported signature algorithm"}, State}}
      end.
  
  
  
negative.code:     {HashAlgo, _, _} =
          ssl_cipher:scheme_to_components(SignatureScheme),
  
      Messages = get_handshake_context_cv(HHistory),
  
      Context = lists:reverse(Messages),
  
  