linux/crypto/ciphers/des/ecb_enc.c

   1 /* crypto/des/ecb_enc.c */
   2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include "des_locl.h"
  60 #include "spr.h"
  61
  62 char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay";
  63 char *DES_version="DES part of SSLeay 0.8.2b 08-Jan-1998";
  64
  65 /* RCSID $Id: ecb_enc.c,v 1.1 2004/03/15 20:35:25 as Exp $ */
  66 /* This function ifdef'ed out for FreeS/WAN project. */
  67 #ifdef notdef
  68 char *des_options()
  69         {
  70         static int init=1;
  71         static char buf[32];
  72
  73         if (init)
  74                 {
  75                 char *ptr,*unroll,*risc,*size;
  76
  77                 init=0;
  78 #ifdef DES_PTR
  79                 ptr="ptr";
  80 #else
  81                 ptr="idx";
  82 #endif
  83 #if defined(DES_RISC1) || defined(DES_RISC2)
  84 #ifdef DES_RISC1
  85                 risc="risc1";
  86 #endif
  87 #ifdef DES_RISC2
  88                 risc="risc2";
  89 #endif
  90 #else
  91                 risc="cisc";
  92 #endif
  93 #ifdef DES_UNROLL
  94                 unroll="16";
  95 #else
  96                 unroll="4";
  97 #endif
  98                 if (sizeof(DES_LONG) != sizeof(long))
  99                         size="int";
 100                 else
 101                         size="long";
 102                 sprintf(buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,size);
 103                 }
 104         return(buf);
 105         }
 106 #endif
 107
 108
 109 void des_ecb_encrypt(input, output, ks, enc)
 110 des_cblock (*input);
 111 des_cblock (*output);
 112 des_key_schedule ks;
 113 int enc;
 114         {
 115         register DES_LONG l;
 116         register unsigned char *in,*out;
 117         DES_LONG ll[2];
 118
 119         in=(unsigned char *)input;
 120         out=(unsigned char *)output;
 121         c2l(in,l); ll[0]=l;
 122         c2l(in,l); ll[1]=l;
 123         des_encrypt(ll,ks,enc);
 124         l=ll[0]; l2c(l,out);
 125         l=ll[1]; l2c(l,out);
 126         l=ll[0]=ll[1]=0;
 127         }
 128