crypto/evp/e_camellia.c

   1 /* crypto/evp/e_camellia.c */
   2 /* ====================================================================
   3  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this
  18  *    software must display the following acknowledgment:
  19  *    "This product includes software developed by the OpenSSL Project
  20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  21  *
  22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23  *    endorse or promote products derived from this software without
  24  *    prior written permission. For written permission, please contact
  25  *    openssl-core@openssl.org.
  26  *
  27  * 5. Products derived from this software may not be called "OpenSSL"
  28  *    nor may "OpenSSL" appear in their names without prior written
  29  *    permission of the OpenSSL Project.
  30  *
  31  * 6. Redistributions of any form whatsoever must retain the following
  32  *    acknowledgment:
  33  *    "This product includes software developed by the OpenSSL Project
  34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47  * OF THE POSSIBILITY OF SUCH DAMAGE.
  48  * ====================================================================
  49  *
  50  * This product includes cryptographic software written by Eric Young
  51  * (eay@cryptsoft.com).  This product includes software written by Tim
  52  * Hudson (tjh@cryptsoft.com).
  53  *
  54  */
  55
  56 #include <openssl/opensslconf.h>
  57 #ifndef OPENSSL_NO_CAMELLIA
  58 # include <openssl/evp.h>
  59 # include <openssl/err.h>
  60 # include <string.h>
  61 # include <assert.h>
  62 # include <openssl/camellia.h>
  63 # include "internal/evp_int.h"
  64 # include "modes_lcl.h"
  65
  66 static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  67                              const unsigned char *iv, int enc);
  68
  69 /* Camellia subkey Structure */
  70 typedef struct {
  71     CAMELLIA_KEY ks;
  72     block128_f block;
  73     union {
  74         cbc128_f cbc;
  75         ctr128_f ctr;
  76     } stream;
  77 } EVP_CAMELLIA_KEY;
  78
  79 # define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
  80
  81 /* Attribute operation for Camellia */
  82 # define data(ctx)       EVP_C_DATA(EVP_CAMELLIA_KEY,ctx)
  83
  84 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
  85 /* ---------^^^ this is not a typo, just a way to detect that
  86  * assembler support was in general requested... */
  87 #  include "sparc_arch.h"
  88
  89 extern unsigned int OPENSSL_sparcv9cap_P[];
  90
  91 #  define SPARC_CMLL_CAPABLE      (OPENSSL_sparcv9cap_P[1] & CFR_CAMELLIA)
  92
  93 void cmll_t4_set_key(const unsigned char *key, int bits, CAMELLIA_KEY *ks);
  94 void cmll_t4_encrypt(const unsigned char *in, unsigned char *out,
  95                      const CAMELLIA_KEY *key);
  96 void cmll_t4_decrypt(const unsigned char *in, unsigned char *out,
  97                      const CAMELLIA_KEY *key);
  98
  99 void cmll128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
 100                             size_t len, const CAMELLIA_KEY *key,
 101                             unsigned char *ivec);
 102 void cmll128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
 103                             size_t len, const CAMELLIA_KEY *key,
 104                             unsigned char *ivec);
 105 void cmll256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
 106                             size_t len, const CAMELLIA_KEY *key,
 107                             unsigned char *ivec);
 108 void cmll256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
 109                             size_t len, const CAMELLIA_KEY *key,
 110                             unsigned char *ivec);
 111 void cmll128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 112                               size_t blocks, const CAMELLIA_KEY *key,
 113                               unsigned char *ivec);
 114 void cmll256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 115                               size_t blocks, const CAMELLIA_KEY *key,
 116                               unsigned char *ivec);
 117
 118 static int cmll_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 119                             const unsigned char *iv, int enc)
 120 {
 121     int ret, mode, bits;
 122     EVP_CAMELLIA_KEY *dat = (EVP_CAMELLIA_KEY *) EVP_CIPHER_CTX_cipher_data(ctx);
 123
 124     mode = EVP_CIPHER_CTX_mode(ctx);
 125     bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
 126
 127     cmll_t4_set_key(key, bits, &dat->ks);
 128
 129     if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 130         && !enc) {
 131         ret = 0;
 132         dat->block = (block128_f) cmll_t4_decrypt;
 133         switch (bits) {
 134         case 128:
 135             dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
 136                 (cbc128_f) cmll128_t4_cbc_decrypt : NULL;
 137             break;
 138         case 192:
 139         case 256:
 140             dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
 141                 (cbc128_f) cmll256_t4_cbc_decrypt : NULL;
 142             break;
 143         default:
 144             ret = -1;
 145         }
 146     } else {
 147         ret = 0;
 148         dat->block = (block128_f) cmll_t4_encrypt;
 149         switch (bits) {
 150         case 128:
 151             if (mode == EVP_CIPH_CBC_MODE)
 152                 dat->stream.cbc = (cbc128_f) cmll128_t4_cbc_encrypt;
 153             else if (mode == EVP_CIPH_CTR_MODE)
 154                 dat->stream.ctr = (ctr128_f) cmll128_t4_ctr32_encrypt;
 155             else
 156                 dat->stream.cbc = NULL;
 157             break;
 158         case 192:
 159         case 256:
 160             if (mode == EVP_CIPH_CBC_MODE)
 161                 dat->stream.cbc = (cbc128_f) cmll256_t4_cbc_encrypt;
 162             else if (mode == EVP_CIPH_CTR_MODE)
 163                 dat->stream.ctr = (ctr128_f) cmll256_t4_ctr32_encrypt;
 164             else
 165                 dat->stream.cbc = NULL;
 166             break;
 167         default:
 168             ret = -1;
 169         }
 170     }
 171
 172     if (ret < 0) {
 173         EVPerr(EVP_F_CMLL_T4_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED);
 174         return 0;
 175     }
 176
 177     return 1;
 178 }
 179
 180 #  define cmll_t4_cbc_cipher camellia_cbc_cipher
 181 static int cmll_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 182                               const unsigned char *in, size_t len);
 183
 184 #  define cmll_t4_ecb_cipher camellia_ecb_cipher
 185 static int cmll_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 186                               const unsigned char *in, size_t len);
 187
 188 #  define cmll_t4_ofb_cipher camellia_ofb_cipher
 189 static int cmll_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 190                               const unsigned char *in, size_t len);
 191
 192 #  define cmll_t4_cfb_cipher camellia_cfb_cipher
 193 static int cmll_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 194                               const unsigned char *in, size_t len);
 195
 196 #  define cmll_t4_cfb8_cipher camellia_cfb8_cipher
 197 static int cmll_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 198                                const unsigned char *in, size_t len);
 199
 200 #  define cmll_t4_cfb1_cipher camellia_cfb1_cipher
 201 static int cmll_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 202                                const unsigned char *in, size_t len);
 203
 204 #  define cmll_t4_ctr_cipher camellia_ctr_cipher
 205 static int cmll_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 206                               const unsigned char *in, size_t len);
 207
 208 #  define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 209 static const EVP_CIPHER cmll_t4_##keylen##_##mode = { \
 210         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 211         flags|EVP_CIPH_##MODE##_MODE,   \
 212         cmll_t4_init_key,               \
 213         cmll_t4_##mode##_cipher,        \
 214         NULL,                           \
 215         sizeof(EVP_CAMELLIA_KEY),       \
 216         NULL,NULL,NULL,NULL }; \
 217 static const EVP_CIPHER camellia_##keylen##_##mode = { \
 218         nid##_##keylen##_##nmode,blocksize,     \
 219         keylen/8,ivlen, \
 220         flags|EVP_CIPH_##MODE##_MODE,   \
 221         camellia_init_key,              \
 222         camellia_##mode##_cipher,       \
 223         NULL,                           \
 224         sizeof(EVP_CAMELLIA_KEY),       \
 225         NULL,NULL,NULL,NULL }; \
 226 const EVP_CIPHER *EVP_camellia_##keylen##_##mode(void) \
 227 { return SPARC_CMLL_CAPABLE?&cmll_t4_##keylen##_##mode:&camellia_##keylen##_##mode; }
 228
 229 # else
 230
 231 #  define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 232 static const EVP_CIPHER camellia_##keylen##_##mode = { \
 233         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 234         flags|EVP_CIPH_##MODE##_MODE,   \
 235         camellia_init_key,              \
 236         camellia_##mode##_cipher,       \
 237         NULL,                           \
 238         sizeof(EVP_CAMELLIA_KEY),       \
 239         NULL,NULL,NULL,NULL }; \
 240 const EVP_CIPHER *EVP_camellia_##keylen##_##mode(void) \
 241 { return &camellia_##keylen##_##mode; }
 242
 243 # endif
 244
 245 # define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 246         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 247         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 248         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 249         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 250         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 251         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 252         BLOCK_CIPHER_generic(nid, keylen, 1, 16, ctr, ctr, CTR, flags)
 253
 254 /* The subkey for Camellia is generated. */
 255 static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 256                              const unsigned char *iv, int enc)
 257 {
 258     int ret, mode;
 259     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 260
 261     ret = Camellia_set_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, &dat->ks);
 262     if (ret < 0) {
 263         EVPerr(EVP_F_CAMELLIA_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED);
 264         return 0;
 265     }
 266
 267     mode = EVP_CIPHER_CTX_mode(ctx);
 268     if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 269         && !enc) {
 270         dat->block = (block128_f) Camellia_decrypt;
 271         dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
 272             (cbc128_f) Camellia_cbc_encrypt : NULL;
 273     } else {
 274         dat->block = (block128_f) Camellia_encrypt;
 275         dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
 276             (cbc128_f) Camellia_cbc_encrypt : NULL;
 277     }
 278
 279     return 1;
 280 }
 281
 282 static int camellia_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 283                                const unsigned char *in, size_t len)
 284 {
 285     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 286
 287     if (dat->stream.cbc)
 288         (*dat->stream.cbc) (in, out, len, &dat->ks,
 289                             EVP_CIPHER_CTX_iv_noconst(ctx),
 290                             EVP_CIPHER_CTX_encrypting(ctx));
 291     else if (EVP_CIPHER_CTX_encrypting(ctx))
 292         CRYPTO_cbc128_encrypt(in, out, len, &dat->ks,
 293                               EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
 294     else
 295         CRYPTO_cbc128_decrypt(in, out, len, &dat->ks,
 296                               EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
 297
 298     return 1;
 299 }
 300
 301 static int camellia_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 302                                const unsigned char *in, size_t len)
 303 {
 304     size_t bl = EVP_CIPHER_CTX_block_size(ctx);
 305     size_t i;
 306     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 307
 308     if (len < bl)
 309         return 1;
 310
 311     for (i = 0, len -= bl; i <= len; i += bl)
 312         (*dat->block) (in + i, out + i, &dat->ks);
 313
 314     return 1;
 315 }
 316
 317 static int camellia_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 318                                const unsigned char *in, size_t len)
 319 {
 320     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 321
 322     int num = EVP_CIPHER_CTX_num(ctx);
 323     CRYPTO_ofb128_encrypt(in, out, len, &dat->ks,
 324                           EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block);
 325     EVP_CIPHER_CTX_set_num(ctx, num);
 326     return 1;
 327 }
 328
 329 static int camellia_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 330                                const unsigned char *in, size_t len)
 331 {
 332     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 333
 334     int num = EVP_CIPHER_CTX_num(ctx);
 335     CRYPTO_cfb128_encrypt(in, out, len, &dat->ks,
 336                           EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
 337     EVP_CIPHER_CTX_set_num(ctx, num);
 338     return 1;
 339 }
 340
 341 static int camellia_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 342                                 const unsigned char *in, size_t len)
 343 {
 344     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 345
 346     int num = EVP_CIPHER_CTX_num(ctx);
 347     CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks,
 348                             EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
 349     EVP_CIPHER_CTX_set_num(ctx, num);
 350     return 1;
 351 }
 352
 353 static int camellia_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 354                                 const unsigned char *in, size_t len)
 355 {
 356     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 357
 358     if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) {
 359         int num = EVP_CIPHER_CTX_num(ctx);
 360         CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks,
 361                                 EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
 362         EVP_CIPHER_CTX_set_num(ctx, num);
 363         return 1;
 364     }
 365
 366     while (len >= MAXBITCHUNK) {
 367         int num = EVP_CIPHER_CTX_num(ctx);
 368         CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks,
 369                                 EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
 370         len -= MAXBITCHUNK;
 371         EVP_CIPHER_CTX_set_num(ctx, num);
 372     }
 373     if (len) {
 374         int num = EVP_CIPHER_CTX_num(ctx);
 375         CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks,
 376                                 EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
 377         EVP_CIPHER_CTX_set_num(ctx, num);
 378     }
 379
 380     return 1;
 381 }
 382
 383 static int camellia_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 384                                const unsigned char *in, size_t len)
 385 {
 386     unsigned int num = EVP_CIPHER_CTX_num(ctx);
 387     EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
 388
 389     if (dat->stream.ctr)
 390         CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks,
 391                                     EVP_CIPHER_CTX_iv_noconst(ctx),
 392                                     EVP_CIPHER_CTX_buf_noconst(ctx), &num,
 393                                     dat->stream.ctr);
 394     else
 395         CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
 396                               EVP_CIPHER_CTX_iv_noconst(ctx),
 397                               EVP_CIPHER_CTX_buf_noconst(ctx), &num,
 398                               dat->block);
 399     EVP_CIPHER_CTX_set_num(ctx, num);
 400     return 1;
 401 }
 402
 403 BLOCK_CIPHER_generic_pack(NID_camellia, 128, 0)
 404     BLOCK_CIPHER_generic_pack(NID_camellia, 192, 0)
 405     BLOCK_CIPHER_generic_pack(NID_camellia, 256, 0)
 406 #else
 407
 408 # ifdef PEDANTIC
 409 static void *dummy = &dummy;
 410 # endif
 411
 412 #endif