+
+struct private_data;
+
+static void chap_verify TAC_ARGS((struct authen_data *data));
+static void arap_verify TAC_ARGS((struct authen_data *data));
+static void pap_verify TAC_ARGS((struct authen_data *data));
+static void tac_login TAC_ARGS((struct authen_data *data, struct private_data *p));
+
+#ifdef MSCHAP
+static void mschap_verify TAC_ARGS((struct authen_data *data));
+#endif
+
+