/*      $NetBSD: des_ecb.c,v 1.10 2014/03/25 16:28:15 christos Exp $    */
/*      $KAME: des_ecb.c,v 1.5 2000/11/06 13:58:08 itojun Exp $ */

/* crypto/des/ecb_enc.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This file is part of an SSL implementation written
* by Eric Young ([email protected]).
* 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 ([email protected])
*
* 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.]
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: des_ecb.c,v 1.10 2014/03/25 16:28:15 christos Exp $");

#include <sys/param.h>
#ifdef _KERNEL
#include <sys/systm.h>
#else
#include <stdio.h>
#include <string.h>
#endif
#include <crypto/des/des_locl.h>
#include <crypto/des/spr.h>

/* char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay"; */ /* wrong */
/* char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996"; */

char *des_options(void)
       {
       static int init=1;
       static char buf[32];

       if (init)
               {
               const char *ptr,*unroll,*risc,*size;

#ifdef DES_PTR
               ptr="ptr";
#else
               ptr="idx";
#endif
#if defined(DES_RISC1) || defined(DES_RISC2)
#ifdef DES_RISC1
               risc="risc1";
#endif
#ifdef DES_RISC2
               risc="risc2";
#endif
#else
               risc="cisc";
#endif
#ifdef DES_UNROLL
               unroll="16";
#else
               unroll="4";
#endif
               /*CONSTCOND*/
               if (sizeof(DES_LONG) != sizeof(long))
                       size="int";
               else
                       size="long";
               snprintf(buf, sizeof(buf), "des(%s,%s,%s,%s)",
                   ptr, risc, unroll, size);
               init=0;
               }
       return(buf);
}
void des_ecb_encrypt(des_cblock *input, des_cblock *output,
                    des_key_schedule ks, int enc)
{
       register DES_LONG l;
       DES_LONG ll[2];
       const unsigned char *in=&(*input)[0];
       unsigned char *out = &(*output)[0];

       c2l(in,l); ll[0]=l;
       c2l(in,l); ll[1]=l;
       des_encrypt1(ll,ks,enc);
       l=ll[0]; l2c(l,out);
       l=ll[1]; l2c(l,out);
       l=ll[0]=ll[1]=0;
}

void des_ecb3_encrypt(des_cblock *input, des_cblock *output,
            des_key_schedule ks1, des_key_schedule ks2, des_key_schedule ks3,
            int enc)
{
       register DES_LONG l0,l1;
       DES_LONG ll[2];
       const unsigned char *in = &(*input)[0];
       unsigned char *out = &(*output)[0];

       c2l(in,l0);
       c2l(in,l1);
       ll[0]=l0;
       ll[1]=l1;

       if (enc)
               des_encrypt3(ll,ks1,ks2,ks3);
       else
               des_decrypt3(ll,ks1,ks2,ks3);

       l0=ll[0];
       l1=ll[1];
       l2c(l0,out);
       l2c(l1,out);
}