/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _KEYSERV_CACHE_H
#define _KEYSERV_CACHE_H

#ifdef  __cplusplus
extern "C" {
#endif

/* uid_t, size_t, caddr_t, u_int, etc. */
#include <sys/types.h>
/* des_block, keylen_t, algtype_t */
#include <rpc/key_prot.h>

struct dhkey {
        u_short length; /* Length in bytes */
        u_char  key[1]; /* Binary data; allocated to correct length */
};

/* Round up to multiple of four */
#define ALIGN4(addr)            (4 * (((addr)+3)/4))
/* Round up to multiple of eight */
#define ALIGN8(addr)            (8 * (((addr)+7)/8))

/* Convert key length in bits to bytes */
#define KEYLEN(keylen)          (((keylen)+7)/8)

/* Bytes to allocate for struct dhkey holding key of specified length (bits) */
#define DHKEYALLOC(keylen)      ALIGN4(sizeof (struct dhkey) + KEYLEN(keylen))
/* Bytes used for a struct dhkey (already allocated */
#define DHKEYSIZE(dhkey_ptr)    ALIGN4(sizeof (struct dhkey) + \
                                (dhkey_ptr)->length)

struct cachekey3_list {
        keybuf3                 *public;
        keybuf3                 *secret;
        int                     refcnt;
        deskeyarray             deskey;
        struct cachekey3_list   *next;
};

#define CACHEKEY3_LIST_SIZE(keylen)     (sizeof (struct cachekey3_list) + \
                                        2*sizeof (keybuf3) + \
                                        2*(ALIGN4(2*KEYLEN(keylen)+1)) + \
                                        3*sizeof (des_block))

int                     create_cache_file(keylen_t keylen, algtype_t algtype,
                                        int sizespec);

int                     cache_insert(keylen_t keylen, algtype_t algtype,
                                        uid_t uid,
                                        deskeyarray common, des_block key,
                                        keybuf3 *public,
                                        keybuf3 *secret);

struct cachekey3_list   *cache_retrieve(keylen_t keylen, algtype_t algtype,
                                        uid_t uid,
                                        keybuf3 *public, des_block key);

int                     cache_remove(keylen_t keylen, algtype_t algtype,
                                        uid_t uid,
                                        keybuf3 *public);

void                    print_cache(keylen_t keylen, algtype_t algtype);

#ifdef  __cplusplus
}
#endif

#endif /* _KEYSERV_CACHE_H */