Home | History | Annotate | Line # | Download | only in des 
      1 /*	$NetBSD: des.h,v 1.8 2009/03/14 14:46:08 dsl Exp $	*/
      2 /*	$KAME: des.h,v 1.7 2000/09/18 20:59:21 itojun Exp $	*/
      3 
      4 /* lib/des/des.h */
      5 /* Copyright (C) 1995-1996 Eric Young (eay (at) mincom.oz.au)
      6  * All rights reserved.
      7  *
      8  * This file is part of an SSL implementation written
      9  * by Eric Young (eay (at) mincom.oz.au).
     10  * The implementation was written so as to conform with Netscapes SSL
     11  * specification.  This library and applications are
     12  * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
     13  * as long as the following conditions are aheared to.
     14  *
     15  * Copyright remains Eric Young's, and as such any Copyright notices in
     16  * the code are not to be removed.  If this code is used in a product,
     17  * Eric Young should be given attribution as the author of the parts used.
     18  * This can be in the form of a textual message at program startup or
     19  * in documentation (online or textual) provided with the package.
     20  *
     21  * Redistribution and use in source and binary forms, with or without
     22  * modification, are permitted provided that the following conditions
     23  * are met:
     24  * 1. Redistributions of source code must retain the copyright
     25  *    notice, this list of conditions and the following disclaimer.
     26  * 2. Redistributions in binary form must reproduce the above copyright
     27  *    notice, this list of conditions and the following disclaimer in the
     28  *    documentation and/or other materials provided with the distribution.
     29  * 3. All advertising materials mentioning features or use of this software
     30  *    must display the following acknowledgement:
     31  *    This product includes software developed by Eric Young (eay (at) mincom.oz.au)
     32  *
     33  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
     34  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     35  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     36  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     37  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     38  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     39  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     41  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     42  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     43  * SUCH DAMAGE.
     44  *
     45  * The licence and distribution terms for any publically available version or
     46  * derivative of this code cannot be changed.  i.e. this code cannot simply be
     47  * copied and put under another distribution licence
     48  * [including the GNU Public Licence.]
     49  */
     50 
     51 #ifndef HEADER_DES_H
     52 #define HEADER_DES_H
     53 
     54 #ifdef  __cplusplus
     55 extern "C" {
     56 #endif
     57 
     58 /* must be 32bit quantity */
     59 #define DES_LONG u_int32_t
     60 
     61 typedef unsigned char des_cblock[8];
     62 typedef struct des_ks_struct
     63 	{
     64 	union   {
     65 	des_cblock cblock;
     66 	/* make sure things are correct size on machines with
     67 	 * 8 byte longs */
     68 	DES_LONG deslong[2];
     69 	} ks;
     70 	int weak_key;
     71 } des_key_schedule[16];
     72 
     73 #define DES_KEY_SZ 	(sizeof(des_cblock))
     74 #define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
     75 
     76 #define DES_ENCRYPT	1
     77 #define DES_DECRYPT	0
     78 
     79 #define DES_CBC_MODE	0
     80 #define DES_PCBC_MODE	1
     81 
     82 extern int des_check_key;	/* defaults to false */
     83 
     84 char *des_options(void);
     85 void des_ecb_encrypt(des_cblock *, des_cblock *,
     86 	des_key_schedule, int);
     87 
     88 void des_encrypt1(DES_LONG *, des_key_schedule, int);
     89 void des_encrypt2(DES_LONG *, des_key_schedule, int);
     90 void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
     91 		      des_key_schedule);
     92 void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
     93 		      des_key_schedule);
     94 
     95 void des_ecb3_encrypt(des_cblock *, des_cblock *, des_key_schedule,
     96 			  des_key_schedule, des_key_schedule, int);
     97 
     98 void des_ncbc_encrypt(const unsigned char *, unsigned char *, long,
     99 			  des_key_schedule, des_cblock *, int);
    100 
    101 void des_ede3_cbc_encrypt(const unsigned char *, unsigned char *, long,
    102 			  des_key_schedule, des_key_schedule,
    103 			  des_key_schedule, des_cblock *, int);
    104 
    105 void des_set_odd_parity(des_cblock *);
    106 void des_fixup_key_parity(des_cblock *);
    107 int des_is_weak_key(des_cblock *);
    108 int des_set_key(des_cblock *, des_key_schedule);
    109 int des_key_sched(des_cblock *, des_key_schedule);
    110 int des_set_key_checked(des_cblock *, des_key_schedule);
    111 void des_set_key_unchecked(des_cblock *, des_key_schedule);
    112 int des_check_key_parity(des_cblock *);
    113 
    114 #ifdef  __cplusplus
    115 }
    116 #endif
    117 
    118 #endif
    119