anchor.diff:      "Insufficient Security";
   description_txt(?INTERNAL_ERROR) ->
       "Internal Error";
  +description_txt(?INAPPROPRIATE_FALLBACK) ->
  +    "Inappropriate Fallback";
   description_txt(?USER_CANCELED) ->
       "User Canceled";
   description_txt(?NO_RENEGOTIATION) ->
  
positive.code:     insufficient_security;
  description_atom(?INTERNAL_ERROR) ->
      internal_error;
  description_atom(?USER_CANCELED) ->
      user_canceled;
  description_atom(?NO_RENEGOTIATION) ->
      no_renegotiation;
  description_atom(?UNSUPPORTED_EXTENSION) ->
      unsupported_extension;
  description_atom(?CERTIFICATE_UNOBTAINABLE) ->
  
negative.code:     bad_certificate_hash_value;
  description_atom(?UNKNOWN_PSK_IDENTITY) ->
      unknown_psk_identity;
  description_atom(?CERTIFICATE_REQUIRED) ->
      certificate_required;
  description_atom(?NO_APPLICATION_PROTOCOL) ->
      no_application_protocol;
  description_atom(_) ->
      'unsupported/unknown_alert'.
  