crypto/evp/e_ecb_3d.c

   1 /* crypto/evp/e_ecb_3d.c */
   2 /* Copyright (C) 1995-1998 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 #ifndef NO_DES
  60 #include <stdio.h>
  61 #include "cryptlib.h"
  62 #include <openssl/evp.h>
  63 #include <openssl/objects.h>
  64
  65 static void des_ede_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
  66         unsigned char *iv,int enc);
  67 static void des_ede3_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
  68         unsigned char *iv,int enc);
  69 static void des_ede_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
  70         unsigned char *in, unsigned int inl);
  71 static EVP_CIPHER d_ede_cipher2=
  72         {
  73         NID_des_ede,
  74         8,16,0,
  75         EVP_CIPH_ECB_MODE,
  76         des_ede_init_key,
  77         des_ede_cipher,
  78         NULL,
  79         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
  80                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.des_ede)),
  81         NULL,
  82         NULL,
  83         NULL
  84         };
  85
  86 static EVP_CIPHER d_ede3_cipher3=
  87         {
  88         NID_des_ede3,
  89         8,24,0,
  90         EVP_CIPH_ECB_MODE,
  91         des_ede3_init_key,
  92         des_ede_cipher,
  93         NULL,
  94         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
  95                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.des_ede)),
  96         NULL,
  97         NULL,
  98         NULL
  99         };
 100
 101 EVP_CIPHER *EVP_des_ede(void)
 102         {
 103         return(&d_ede_cipher2);
 104         }
 105
 106 EVP_CIPHER *EVP_des_ede3(void)
 107         {
 108         return(&d_ede3_cipher3);
 109         }
 110
 111 static void des_ede_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
 112              unsigned char *iv, int enc)
 113         {
 114         des_cblock *deskey = (des_cblock *)key;
 115
 116         if (deskey != NULL)
 117                 {
 118                 des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
 119                 des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
 120                 memcpy( (char *)ctx->c.des_ede.ks3,
 121                         (char *)ctx->c.des_ede.ks1,
 122                         sizeof(ctx->c.des_ede.ks1));
 123                 }
 124         }
 125
 126 static void des_ede3_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
 127              unsigned char *iv, int enc)
 128         {
 129         des_cblock *deskey = (des_cblock *)key;
 130
 131         if (deskey != NULL)
 132                 {
 133                 des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
 134                 des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
 135                 des_set_key_unchecked(&deskey[2],ctx->c.des_ede.ks3);
 136                 }
 137         }
 138
 139 static void des_ede_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 140              unsigned char *in, unsigned int inl)
 141         {
 142         unsigned int i;
 143         des_cblock *output   /* = (des_cblock *)out */;
 144         des_cblock *input    /* = (des_cblock *)in */;
 145
 146         if (inl < 8) return;
 147         inl-=8;
 148         for (i=0; i<=inl; i+=8)
 149                 {
 150                 output = (des_cblock *)(out + i);
 151                 input = (des_cblock *)(in + i);
 152
 153                 des_ecb3_encrypt(input,output,
 154                         ctx->c.des_ede.ks1,
 155                         ctx->c.des_ede.ks2,
 156                         ctx->c.des_ede.ks3,
 157                         ctx->encrypt);
 158
 159                 /* output++; */
 160                 /* input++; */
 161                 }
 162         }
 163 #endif