sys/crypto/des/des.h

   1 /*      $FreeBSD: src/sys/crypto/des/des.h,v 1.6 2002/03/20 05:13:51 alfred Exp $       */
   2 /*      $KAME: des.h,v 1.8 2001/09/10 04:03:57 itojun Exp $     */
   3
   4 /* lib/des/des.h */
   5 /* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
   6  * All rights reserved.
   7  *
   8  * This file is part of an SSL implementation written
   9  * by Eric Young (eay@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@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 *, des_key_schedule, int);
  86
  87 void des_encrypt1(DES_LONG *, des_key_schedule, int);
  88 void des_encrypt2(DES_LONG *, des_key_schedule, int);
  89 void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
  90                       des_key_schedule);
  91 void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
  92                       des_key_schedule);
  93
  94 void des_ecb3_encrypt(des_cblock *, des_cblock *, des_key_schedule,
  95                           des_key_schedule, des_key_schedule, int);
  96
  97 void des_ncbc_encrypt(const unsigned char *, unsigned char *, long,
  98                           des_key_schedule, des_cblock *, int);
  99
 100 void des_ede3_cbc_encrypt(const unsigned char *, unsigned char *, long,
 101                           des_key_schedule, des_key_schedule,
 102                           des_key_schedule, des_cblock *, int);
 103
 104 void des_set_odd_parity(des_cblock *);
 105 void des_fixup_key_parity(des_cblock *);
 106 int des_is_weak_key(des_cblock *);
 107 int des_set_key(des_cblock *, des_key_schedule);
 108 int des_key_sched(des_cblock *, des_key_schedule);
 109 int des_set_key_checked(des_cblock *, des_key_schedule);
 110 void des_set_key_unchecked(des_cblock *, des_key_schedule);
 111 int des_check_key_parity(des_cblock *);
 112
 113 #ifdef  __cplusplus
 114 }
 115 #endif
 116
 117 #endif