#pragma	lib	"libauth.a" /* * authentication */ enum{	/*	 * fsauth message types	 */	FScchal	= 1,	FSschal,	FSok,	FSctick,	FSstick,	FSerr, 	/*	 * rexauth/chal message types	 */	RXcchal	= 0,	RXschal	= 0,	RXctick	= 1,	RXstick	= 1, 	/*	 * changekey message types	 */	CKcchal	= 1, 	/*	 * length of a challenege & message type	 */	AUTHLEN	= 8,	CONFIGLEN = 14,	NETCHLEN = 16, 	KEYDBLEN	= NAMELEN+DESKEYLEN+4+2,}; typedef struct	Nvrsafe	Nvrsafe;struct Nvrsafe{	uchar	machkey[DESKEYLEN];	uchar	machsum;	uchar	authkey[DESKEYLEN];	uchar	authsum;	char	config[CONFIGLEN];	uchar	configsum;}; extern	char	*auth(int, char*);extern	char	*srvauth(char*);extern	int	getchall(char*, char[NETCHLEN]);extern	int	challreply(int, char*, char*);extern	char	*newns(char*, char*);extern	int	authdial(char*);extern	int	passtokey(void*, char*);extern	uchar	nvcsum(void*, int);