crypto/openssl-0.9.7d/crypto/evp/evp_locl.h

   1 /* evp_locl.h */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 /* Macros to code block cipher wrappers */
  60
  61 /* Wrapper functions for each cipher mode */
  62
  63 #define BLOCK_CIPHER_ecb_loop() \
  64         unsigned int i, bl; \
  65         bl = ctx->cipher->block_size;\
  66         if(inl < bl) return 1;\
  67         inl -= bl; \
  68         for(i=0; i <= inl; i+=bl) \
  69
  70 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
  71 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
  72 {\
  73         BLOCK_CIPHER_ecb_loop() \
  74                 cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
  75         return 1;\
  76 }
  77
  78 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
  79 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
  80 {\
  81         cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
  82         return 1;\
  83 }
  84
  85 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
  86 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
  87 {\
  88         cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
  89         return 1;\
  90 }
  91
  92 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
  93 static int cname##_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
  94 {\
  95         cprefix##_cfb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
  96         return 1;\
  97 }
  98
  99 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 100         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 101         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 102         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 103         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 104
 105 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 106                           key_len, iv_len, flags, init_key, cleanup, \
 107                           set_asn1, get_asn1, ctrl) \
 108 static const EVP_CIPHER cname##_##mode = { \
 109         nid##_##nmode, block_size, key_len, iv_len, \
 110         flags | EVP_CIPH_##MODE##_MODE, \
 111         init_key, \
 112         cname##_##mode##_cipher, \
 113         cleanup, \
 114         sizeof(kstruct), \
 115         set_asn1, get_asn1,\
 116         ctrl, \
 117         NULL \
 118 }; \
 119 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 120
 121 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 122                              iv_len, flags, init_key, cleanup, set_asn1, \
 123                              get_asn1, ctrl) \
 124 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 125                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 126
 127 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 128                              iv_len, cbits, flags, init_key, cleanup, \
 129                              set_asn1, get_asn1, ctrl) \
 130 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb, CFB, kstruct, nid, 1, \
 131                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 132                   get_asn1, ctrl)
 133
 134 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 135                              iv_len, cbits, flags, init_key, cleanup, \
 136                              set_asn1, get_asn1, ctrl) \
 137 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 138                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 139                   get_asn1, ctrl)
 140
 141 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 142                              iv_len, flags, init_key, cleanup, set_asn1, \
 143                              get_asn1, ctrl) \
 144 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 145                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 146
 147 #define BLOCK_CIPHER_defs(cname, kstruct, \
 148                           nid, block_size, key_len, iv_len, cbits, flags, \
 149                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 150 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 151                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 152 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 153                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 154 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 155                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 156 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 157                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 158
 159
 160 /*
 161 #define BLOCK_CIPHER_defs(cname, kstruct, \
 162                                 nid, block_size, key_len, iv_len, flags,\
 163                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 164 static const EVP_CIPHER cname##_cbc = {\
 165         nid##_cbc, block_size, key_len, iv_len, \
 166         flags | EVP_CIPH_CBC_MODE,\
 167         init_key,\
 168         cname##_cbc_cipher,\
 169         cleanup,\
 170         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 171                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 172         set_asn1, get_asn1,\
 173         ctrl, \
 174         NULL \
 175 };\
 176 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 177 static const EVP_CIPHER cname##_cfb = {\
 178         nid##_cfb64, 1, key_len, iv_len, \
 179         flags | EVP_CIPH_CFB_MODE,\
 180         init_key,\
 181         cname##_cfb_cipher,\
 182         cleanup,\
 183         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 184                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 185         set_asn1, get_asn1,\
 186         ctrl,\
 187         NULL \
 188 };\
 189 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 190 static const EVP_CIPHER cname##_ofb = {\
 191         nid##_ofb64, 1, key_len, iv_len, \
 192         flags | EVP_CIPH_OFB_MODE,\
 193         init_key,\
 194         cname##_ofb_cipher,\
 195         cleanup,\
 196         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 197                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 198         set_asn1, get_asn1,\
 199         ctrl,\
 200         NULL \
 201 };\
 202 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 203 static const EVP_CIPHER cname##_ecb = {\
 204         nid##_ecb, block_size, key_len, iv_len, \
 205         flags | EVP_CIPH_ECB_MODE,\
 206         init_key,\
 207         cname##_ecb_cipher,\
 208         cleanup,\
 209         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 210                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 211         set_asn1, get_asn1,\
 212         ctrl,\
 213         NULL \
 214 };\
 215 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 216 */
 217
 218 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 219                                block_size, key_len, iv_len, cbits, \
 220                                flags, init_key, \
 221                                cleanup, set_asn1, get_asn1, ctrl) \
 222         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 223         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 224                           cbits, flags, init_key, cleanup, set_asn1, \
 225                           get_asn1, ctrl)
 226
 227 #define EVP_C_DATA(kstruct, ctx)        ((kstruct *)(ctx)->cipher_data)