crypto/evp/e_camellia.c

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