bsd/crypto/des/des.h

   1 /*      $FreeBSD: src/sys/crypto/des/des.h,v 1.1.2.2 2001/07/03 11:01:31 ume 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@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 _;
  66                 /* make sure things are correct size on machines with
  67                  * 8 byte longs */
  68                 DES_LONG pad[2];
  69                 } ks;
  70 #undef _
  71 #define _       ks._
  72         } des_key_schedule[16];
  73
  74 #define DES_KEY_SZ      (sizeof(des_cblock))
  75 #define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
  76
  77 #define DES_ENCRYPT     1
  78 #define DES_DECRYPT     0
  79
  80 #define DES_CBC_MODE    0
  81 #define DES_PCBC_MODE   1
  82
  83 extern int des_check_key;       /* defaults to false */
  84
  85 char *des_options __P((void));
  86 void des_ecb_encrypt __P((des_cblock *, des_cblock *,
  87         des_key_schedule, int));
  88 void des_encrypt __P((DES_LONG *, des_key_schedule, int));
  89 void des_encrypt2 __P((DES_LONG *, des_key_schedule, int));
  90
  91 void des_set_odd_parity __P((des_cblock *));
  92 int des_is_weak_key __P((des_cblock *));
  93 int des_set_key __P((des_cblock *, des_key_schedule));
  94 int des_key_sched __P((des_cblock *, des_key_schedule));
  95
  96 #ifdef  __cplusplus
  97 }
  98 #endif
  99
 100 #endif