The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/crypto/des/des_ecb.c

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    1 /*      $KAME: des_ecb.c,v 1.6 2001/09/10 04:03:58 itojun Exp $ */
    2 
    3 /* crypto/des/ecb_enc.c */
    4 
    5 /* Copyright (C) 1995-1998 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 #include <sys/cdefs.h>
   52 __FBSDID("$FreeBSD: releng/10.1/sys/crypto/des/des_ecb.c 130443 2004-06-14 00:38:54Z obrien $");
   53 
   54 #include <sys/param.h>
   55 #include <sys/systm.h>
   56 #include <crypto/des/des_locl.h>
   57 #include <crypto/des/spr.h>
   58 
   59 /* char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay"; */ /* wrong */
   60 /* char *DES_version="DES part of SSLeay 0.6.4 30-Aug-1996"; */
   61 
   62 char *des_options(void)
   63         {
   64         static int init=1;
   65         static char buf[32];
   66 
   67         if (init)
   68                 {
   69                 const char *ptr,*unroll,*risc,*size;
   70 
   71 #ifdef DES_PTR
   72                 ptr="ptr";
   73 #else
   74                 ptr="idx";
   75 #endif
   76 #if defined(DES_RISC1) || defined(DES_RISC2)
   77 #ifdef DES_RISC1
   78                 risc="risc1";
   79 #endif
   80 #ifdef DES_RISC2
   81                 risc="risc2";
   82 #endif
   83 #else
   84                 risc="cisc";
   85 #endif
   86 #ifdef DES_UNROLL
   87                 unroll="16";
   88 #else
   89                 unroll="4";
   90 #endif
   91                 if (sizeof(DES_LONG) != sizeof(long))
   92                         size="int";
   93                 else
   94                         size="long";
   95                 sprintf(buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,size);
   96                 init=0;
   97                 }
   98         return(buf);
   99 }
  100 void des_ecb_encrypt(des_cblock *input, des_cblock *output, 
  101                      des_key_schedule ks, int enc)
  102 {
  103         register DES_LONG l;
  104         DES_LONG ll[2];
  105         const unsigned char *in=&(*input)[0];
  106         unsigned char *out = &(*output)[0];
  107 
  108         c2l(in,l); ll[0]=l;
  109         c2l(in,l); ll[1]=l;
  110         des_encrypt1(ll,ks,enc);
  111         l=ll[0]; l2c(l,out);
  112         l=ll[1]; l2c(l,out);
  113         l=ll[0]=ll[1]=0;
  114 }
  115 
  116 void des_ecb3_encrypt(des_cblock *input, des_cblock *output,
  117              des_key_schedule ks1, des_key_schedule ks2, des_key_schedule ks3,
  118              int enc)
  119 {
  120         register DES_LONG l0,l1;
  121         DES_LONG ll[2];
  122         const unsigned char *in = &(*input)[0];
  123         unsigned char *out = &(*output)[0];
  124  
  125         c2l(in,l0); 
  126         c2l(in,l1);
  127         ll[0]=l0; 
  128         ll[1]=l1;
  129 
  130         if (enc)
  131                 des_encrypt3(ll,ks1,ks2,ks3);
  132         else
  133                 des_decrypt3(ll,ks1,ks2,ks3);
  134 
  135         l0=ll[0];
  136         l1=ll[1];
  137         l2c(l0,out);
  138         l2c(l1,out);
  139 }

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