+/* hostkey handling */
+Key *get_hostkey_by_index(int);
+Key *get_hostkey_by_type(int);
+int get_hostkey_index(Key *);
+int ssh1_session_key(BIGNUM *);
+
+/* debug messages during authentication */
+void auth_debug_add(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void auth_debug_send(void);
+void auth_debug_reset(void);
+
+struct passwd *fakepw(void);
+