/*
 * $Header: /smsa/bsd:include/rpc/auth_des.h:bsd  1.2  $
 * $Source: /smsa/bsd:include/rpc/auth_des.h: $
 *
 * Copyright (c) 1988 Acorn Computers Ltd., Cambridge, England
 * Copyright (c) 1988 by Sun Microsystems, Inc.
 * 1.3 88/02/08 SMI      
 */

#ifndef __rpc_auth_des_h
#define __rpc_auth_des_h

/*
 * auth_des.h, Protocol for DES style authentication for RPC
 */

/*
 * There are two kinds of "names": fullnames and nicknames
 */
enum authdes_namekind {
	ADN_FULLNAME, 
	ADN_NICKNAME
};

/*
 * A fullname contains the network name of the client, 
 * a conversation key and the window
 */
struct authdes_fullname {
	char *name;		/* network name of client, up to MAXNETNAMELEN */
	des_block key;		/* conversation key */
	u_long window;		/* associated window */
};


/*
 * A credential 
 */
struct authdes_cred {
	enum authdes_namekind adc_namekind;
	struct authdes_fullname adc_fullname;
	u_long adc_nickname;
};



/*
 * A des authentication verifier 
 */
struct authdes_verf {
	union {
		struct timeval adv_ctime;	/* clear time */
		des_block adv_xtime;		/* crypt time */
	} adv_time_u;
	u_long adv_int_u;
};

/*
 * des authentication verifier: client variety
 *
 * adv_timestamp is the current time.
 * adv_winverf is the credential window + 1.
 * Both are encrypted using the conversation key.
 */
#define adv_timestamp	adv_time_u.adv_ctime
#define adv_xtimestamp	adv_time_u.adv_xtime
#define adv_winverf	adv_int_u

/*
 * des authentication verifier: server variety
 *
 * adv_timeverf is the client's timestamp + client's window
 * adv_nickname is the server's nickname for the client.
 * adv_timeverf is encrypted using the conversation key.
 */
#define adv_timeverf	adv_time_u.adv_ctime
#define adv_xtimeverf	adv_time_u.adv_xtime
#define adv_nickname	adv_int_u

#endif/*__rpc_auth_des_h*/

/* EOF auth_des.h */
