/* $FreeBSD$ */
/* $KAME: des.h,v 1.8 2001/09/10 04:03:57 itojun Exp $ */
/* lib/des/des.h */
/* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
* All rights reserved.
*
* This file is part of an SSL implementation written
* by Eric Young (eay@mincom.oz.au).
* The implementation was written so as to conform with Netscapes SSL
* specification. This library and applications are
* FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
* as long as the following conditions are aheared to.
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed. If this code is used in a product,
* Eric Young should be given attribution as the author of the parts used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Eric Young (eay@mincom.oz.au)
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#ifndef HEADER_DES_H
#define HEADER_DES_H
#ifdef __cplusplus
extern "C" {
#endif
/* must be 32bit quantity */
#define DES_LONG uint32_t
typedef unsigned char des_cblock[8];
typedef struct des_ks_struct
{
union {
des_cblock cblock;
/* make sure things are correct size on machines with
* 8 byte longs */
DES_LONG deslong[2];
} ks;
int weak_key;
} des_key_schedule[16];
#define DES_KEY_SZ (sizeof(des_cblock))
#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
#define DES_ENCRYPT 1
#define DES_DECRYPT 0
#define DES_CBC_MODE 0
#define DES_PCBC_MODE 1
extern int des_check_key; /* defaults to false */
char *des_options(void);
void des_ecb_encrypt(unsigned char *, unsigned char *, des_key_schedule, int);
void des_encrypt1(DES_LONG *, des_key_schedule, int);
void des_encrypt2(DES_LONG *, des_key_schedule, int);
void des_encrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
des_key_schedule);
void des_decrypt3(DES_LONG *, des_key_schedule, des_key_schedule,
des_key_schedule);
void des_ecb3_encrypt(unsigned char *, unsigned char *, des_key_schedule,
des_key_schedule, des_key_schedule, int);
void des_set_odd_parity(unsigned char *);
void des_fixup_key_parity(unsigned char *);
int des_is_weak_key(const unsigned char *);
int des_set_key(const unsigned char *, des_key_schedule);
int des_key_sched(const unsigned char *, des_key_schedule);
int des_set_key_checked(const unsigned char *, des_key_schedule);
void des_set_key_unchecked(const unsigned char *, des_key_schedule);
int des_check_key_parity(const unsigned char *);
#ifdef __cplusplus
}
#endif
#endif