+void set_newkeys(int mode);
+int packet_get_keyiv_len(int);
+void packet_get_keyiv(int, u_char *, u_int);
+int packet_get_keycontext(int, u_char *);
+void packet_set_keycontext(int, u_char *);
+u_int32_t packet_get_seqnr(int);
+void packet_set_seqnr(int, u_int32_t);
+int packet_get_ssh1_cipher(void);
+void packet_set_iv(int, u_char *);
+