crypto/evp/e_aes.c

   1 /* ====================================================================
   2  * Copyright (c) 2001-2011 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  */
  50
  51 #define OPENSSL_FIPSAPI
  52
  53 #include <openssl/opensslconf.h>
  54 #ifndef OPENSSL_NO_AES
  55 #include <openssl/evp.h>
  56 #include <openssl/err.h>
  57 #include <string.h>
  58 #include <assert.h>
  59 #include <openssl/aes.h>
  60 #include "evp_locl.h"
  61 #include "modes_lcl.h"
  62 #include <openssl/rand.h>
  63
  64 typedef struct
  65         {
  66         union { double align; AES_KEY ks; } ks;
  67         block128_f block;
  68         union {
  69                 cbc128_f cbc;
  70                 ctr128_f ctr;
  71         } stream;
  72         } EVP_AES_KEY;
  73
  74 typedef struct
  75         {
  76         union { double align; AES_KEY ks; } ks; /* AES key schedule to use */
  77         int key_set;            /* Set if key initialised */
  78         int iv_set;             /* Set if an iv is set */
  79         GCM128_CONTEXT gcm;
  80         unsigned char *iv;      /* Temporary IV store */
  81         int ivlen;              /* IV length */
  82         int taglen;
  83         int iv_gen;             /* It is OK to generate IVs */
  84         int tls_aad_len;        /* TLS AAD length */
  85         ctr128_f ctr;
  86         } EVP_AES_GCM_CTX;
  87
  88 typedef struct
  89         {
  90         union { double align; AES_KEY ks; } ks1, ks2;   /* AES key schedules to use */
  91         XTS128_CONTEXT xts;
  92         void     (*stream)(const unsigned char *in,
  93                         unsigned char *out, size_t length,
  94                         const AES_KEY *key1, const AES_KEY *key2,
  95                         const unsigned char iv[16]);
  96         } EVP_AES_XTS_CTX;
  97
  98 typedef struct
  99         {
 100         union { double align; AES_KEY ks; } ks; /* AES key schedule to use */
 101         int key_set;            /* Set if key initialised */
 102         int iv_set;             /* Set if an iv is set */
 103         int tag_set;            /* Set if tag is valid */
 104         int len_set;            /* Set if message length set */
 105         int L, M;               /* L and M parameters from RFC3610 */
 106         CCM128_CONTEXT ccm;
 107         ccm128_f str;
 108         } EVP_AES_CCM_CTX;
 109
 110 #define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
 111
 112 #ifdef VPAES_ASM
 113 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
 114                         AES_KEY *key);
 115 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
 116                         AES_KEY *key);
 117
 118 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
 119                         const AES_KEY *key);
 120 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
 121                         const AES_KEY *key);
 122
 123 void vpaes_cbc_encrypt(const unsigned char *in,
 124                         unsigned char *out,
 125                         size_t length,
 126                         const AES_KEY *key,
 127                         unsigned char *ivec, int enc);
 128 #endif
 129 #ifdef BSAES_ASM
 130 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
 131                         size_t length, const AES_KEY *key,
 132                         unsigned char ivec[16], int enc);
 133 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
 134                         size_t len, const AES_KEY *key,
 135                         const unsigned char ivec[16]);
 136 void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
 137                         size_t len, const AES_KEY *key1,
 138                         const AES_KEY *key2, const unsigned char iv[16]);
 139 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
 140                         size_t len, const AES_KEY *key1,
 141                         const AES_KEY *key2, const unsigned char iv[16]);
 142 #endif
 143 #ifdef AES_CTR_ASM
 144 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 145                         size_t blocks, const AES_KEY *key,
 146                         const unsigned char ivec[AES_BLOCK_SIZE]);
 147 #endif
 148 #ifdef AES_XTS_ASM
 149 void AES_xts_encrypt(const char *inp,char *out,size_t len,
 150                         const AES_KEY *key1, const AES_KEY *key2,
 151                         const unsigned char iv[16]);
 152 void AES_xts_decrypt(const char *inp,char *out,size_t len,
 153                         const AES_KEY *key1, const AES_KEY *key2,
 154                         const unsigned char iv[16]);
 155 #endif
 156
 157 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 158         ((defined(__i386)       || defined(__i386__)    || \
 159           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 160         defined(__x86_64)       || defined(__x86_64__)  || \
 161         defined(_M_AMD64)       || defined(_M_X64)      || \
 162         defined(__INTEL__)                              )
 163
 164 extern unsigned int OPENSSL_ia32cap_P[];
 165
 166 #ifdef VPAES_ASM
 167 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 168 #endif
 169 #ifdef BSAES_ASM
 170 #define BSAES_CAPABLE   VPAES_CAPABLE
 171 #endif
 172 /*
 173  * AES-NI section
 174  */
 175 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 176
 177 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 178                         AES_KEY *key);
 179 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 180                         AES_KEY *key);
 181
 182 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 183                         const AES_KEY *key);
 184 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 185                         const AES_KEY *key);
 186
 187 void aesni_ecb_encrypt(const unsigned char *in,
 188                         unsigned char *out,
 189                         size_t length,
 190                         const AES_KEY *key,
 191                         int enc);
 192 void aesni_cbc_encrypt(const unsigned char *in,
 193                         unsigned char *out,
 194                         size_t length,
 195                         const AES_KEY *key,
 196                         unsigned char *ivec, int enc);
 197
 198 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 199                         unsigned char *out,
 200                         size_t blocks,
 201                         const void *key,
 202                         const unsigned char *ivec);
 203
 204 void aesni_xts_encrypt(const unsigned char *in,
 205                         unsigned char *out,
 206                         size_t length,
 207                         const AES_KEY *key1, const AES_KEY *key2,
 208                         const unsigned char iv[16]);
 209
 210 void aesni_xts_decrypt(const unsigned char *in,
 211                         unsigned char *out,
 212                         size_t length,
 213                         const AES_KEY *key1, const AES_KEY *key2,
 214                         const unsigned char iv[16]);
 215
 216 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 217                         unsigned char *out,
 218                         size_t blocks,
 219                         const void *key,
 220                         const unsigned char ivec[16],
 221                         unsigned char cmac[16]);
 222
 223 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 224                         unsigned char *out,
 225                         size_t blocks,
 226                         const void *key,
 227                         const unsigned char ivec[16],
 228                         unsigned char cmac[16]);
 229
 230 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 231                    const unsigned char *iv, int enc)
 232         {
 233         int ret, mode;
 234         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 235
 236         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 237         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 238             && !enc)
 239                 {
 240                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 241                 dat->block      = (block128_f)aesni_decrypt;
 242                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 243                                         (cbc128_f)aesni_cbc_encrypt :
 244                                         NULL;
 245                 }
 246         else    {
 247                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 248                 dat->block      = (block128_f)aesni_encrypt;
 249                 if (mode==EVP_CIPH_CBC_MODE)
 250                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 251                 else if (mode==EVP_CIPH_CTR_MODE)
 252                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 253                 else
 254                         dat->stream.cbc = NULL;
 255                 }
 256
 257         if(ret < 0)
 258                 {
 259                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 260                 return 0;
 261                 }
 262
 263         return 1;
 264         }
 265
 266 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 267         const unsigned char *in, size_t len)
 268 {
 269         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 270
 271         return 1;
 272 }
 273
 274 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 275         const unsigned char *in, size_t len)
 276 {
 277         size_t  bl = ctx->cipher->block_size;
 278
 279         if (len<bl)     return 1;
 280
 281         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 282
 283         return 1;
 284 }
 285
 286 #define aesni_ofb_cipher aes_ofb_cipher
 287 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 288         const unsigned char *in,size_t len);
 289
 290 #define aesni_cfb_cipher aes_cfb_cipher
 291 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 292         const unsigned char *in,size_t len);
 293
 294 #define aesni_cfb8_cipher aes_cfb8_cipher
 295 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 296         const unsigned char *in,size_t len);
 297
 298 #define aesni_cfb1_cipher aes_cfb1_cipher
 299 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 300         const unsigned char *in,size_t len);
 301
 302 #define aesni_ctr_cipher aes_ctr_cipher
 303 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 304                 const unsigned char *in, size_t len);
 305
 306 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 307                         const unsigned char *iv, int enc)
 308         {
 309         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 310         if (!iv && !key)
 311                 return 1;
 312         if (key)
 313                 {
 314                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
 315                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 316                                 (block128_f)aesni_encrypt);
 317                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 318                 /* If we have an iv can set it directly, otherwise use
 319                  * saved IV.
 320                  */
 321                 if (iv == NULL && gctx->iv_set)
 322                         iv = gctx->iv;
 323                 if (iv)
 324                         {
 325                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 326                         gctx->iv_set = 1;
 327                         }
 328                 gctx->key_set = 1;
 329                 }
 330         else
 331                 {
 332                 /* If key set use IV, otherwise copy */
 333                 if (gctx->key_set)
 334                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 335                 else
 336                         memcpy(gctx->iv, iv, gctx->ivlen);
 337                 gctx->iv_set = 1;
 338                 gctx->iv_gen = 0;
 339                 }
 340         return 1;
 341         }
 342
 343 #define aesni_gcm_cipher aes_gcm_cipher
 344 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 345                 const unsigned char *in, size_t len);
 346
 347 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 348                         const unsigned char *iv, int enc)
 349         {
 350         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 351         if (!iv && !key)
 352                 return 1;
 353
 354         if (key)
 355                 {
 356                 /* key_len is two AES keys */
 357                 if (enc)
 358                         {
 359                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 360                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 361                         xctx->stream = aesni_xts_encrypt;
 362                         }
 363                 else
 364                         {
 365                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 366                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 367                         xctx->stream = aesni_xts_decrypt;
 368                         }
 369
 370                 aesni_set_encrypt_key(key + ctx->key_len/2,
 371                                                 ctx->key_len * 4, &xctx->ks2.ks);
 372                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 373
 374                 xctx->xts.key1 = &xctx->ks1;
 375                 }
 376
 377         if (iv)
 378                 {
 379                 xctx->xts.key2 = &xctx->ks2;
 380                 memcpy(ctx->iv, iv, 16);
 381                 }
 382
 383         return 1;
 384         }
 385
 386 #define aesni_xts_cipher aes_xts_cipher
 387 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 388                 const unsigned char *in, size_t len);
 389
 390 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 391                         const unsigned char *iv, int enc)
 392         {
 393         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 394         if (!iv && !key)
 395                 return 1;
 396         if (key)
 397                 {
 398                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
 399                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 400                                         &cctx->ks, (block128_f)aesni_encrypt);
 401                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 402                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 403                 cctx->key_set = 1;
 404                 }
 405         if (iv)
 406                 {
 407                 memcpy(ctx->iv, iv, 15 - cctx->L);
 408                 cctx->iv_set = 1;
 409                 }
 410         return 1;
 411         }
 412
 413 #define aesni_ccm_cipher aes_ccm_cipher
 414 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 415                 const unsigned char *in, size_t len);
 416
 417 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 418 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 419         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 420         flags|EVP_CIPH_##MODE##_MODE,   \
 421         aesni_init_key,                 \
 422         aesni_##mode##_cipher,          \
 423         NULL,                           \
 424         sizeof(EVP_AES_KEY),            \
 425         NULL,NULL,NULL,NULL }; \
 426 static const EVP_CIPHER aes_##keylen##_##mode = { \
 427         nid##_##keylen##_##nmode,blocksize,     \
 428         keylen/8,ivlen, \
 429         flags|EVP_CIPH_##MODE##_MODE,   \
 430         aes_init_key,                   \
 431         aes_##mode##_cipher,            \
 432         NULL,                           \
 433         sizeof(EVP_AES_KEY),            \
 434         NULL,NULL,NULL,NULL }; \
 435 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 436 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 437
 438 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 439 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 440         nid##_##keylen##_##mode,blocksize, \
 441         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 442         flags|EVP_CIPH_##MODE##_MODE,   \
 443         aesni_##mode##_init_key,        \
 444         aesni_##mode##_cipher,          \
 445         aes_##mode##_cleanup,           \
 446         sizeof(EVP_AES_##MODE##_CTX),   \
 447         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 448 static const EVP_CIPHER aes_##keylen##_##mode = { \
 449         nid##_##keylen##_##mode,blocksize, \
 450         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 451         flags|EVP_CIPH_##MODE##_MODE,   \
 452         aes_##mode##_init_key,          \
 453         aes_##mode##_cipher,            \
 454         aes_##mode##_cleanup,           \
 455         sizeof(EVP_AES_##MODE##_CTX),   \
 456         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 457 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 458 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 459
 460 #elif   defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
 461
 462 #include "sparc_arch.h"
 463
 464 extern unsigned int OPENSSL_sparcv9cap_P[];
 465
 466 #define SPARC_AES_CAPABLE       (OPENSSL_sparcv9cap_P[1] & CFR_AES)
 467
 468 void    aes_t4_set_encrypt_key (const unsigned char *key, int bits,
 469                                 AES_KEY *ks);
 470 void    aes_t4_set_decrypt_key (const unsigned char *key, int bits,
 471                                 AES_KEY *ks);
 472 void    aes_t4_encrypt (const unsigned char *in, unsigned char *out,
 473                                 const AES_KEY *key);
 474 void    aes_t4_decrypt (const unsigned char *in, unsigned char *out,
 475                                 const AES_KEY *key);
 476 /*
 477  * Key-length specific subroutines were chosen for following reason.
 478  * Each SPARC T4 core can execute up to 8 threads which share core's
 479  * resources. Loading as much key material to registers allows to
 480  * minimize references to shared memory interface, as well as amount
 481  * of instructions in inner loops [much needed on T4]. But then having
 482  * non-key-length specific routines would require conditional branches
 483  * either in inner loops or on subroutines' entries. Former is hardly
 484  * acceptable, while latter means code size increase to size occupied
 485  * by multiple key-length specfic subroutines, so why fight?
 486  */
 487 void    aes128_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 488                                 size_t len, const AES_KEY *key,
 489                                 unsigned char *ivec);
 490 void    aes128_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 491                                 size_t len, const AES_KEY *key,
 492                                 unsigned char *ivec);
 493 void    aes192_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 494                                 size_t len, const AES_KEY *key,
 495                                 unsigned char *ivec);
 496 void    aes192_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 497                                 size_t len, const AES_KEY *key,
 498                                 unsigned char *ivec);
 499 void    aes256_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 500                                 size_t len, const AES_KEY *key,
 501                                 unsigned char *ivec);
 502 void    aes256_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 503                                 size_t len, const AES_KEY *key,
 504                                 unsigned char *ivec);
 505 void    aes128_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 506                                 size_t blocks, const AES_KEY *key,
 507                                 unsigned char *ivec);
 508 void    aes192_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 509                                 size_t blocks, const AES_KEY *key,
 510                                 unsigned char *ivec);
 511 void    aes256_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 512                                 size_t blocks, const AES_KEY *key,
 513                                 unsigned char *ivec);
 514 void    aes128_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
 515                                 size_t blocks, const AES_KEY *key1,
 516                                 const AES_KEY *key2, const unsigned char *ivec);
 517 void    aes128_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
 518                                 size_t blocks, const AES_KEY *key1,
 519                                 const AES_KEY *key2, const unsigned char *ivec);
 520 void    aes256_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
 521                                 size_t blocks, const AES_KEY *key1,
 522                                 const AES_KEY *key2, const unsigned char *ivec);
 523 void    aes256_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
 524                                 size_t blocks, const AES_KEY *key1,
 525                                 const AES_KEY *key2, const unsigned char *ivec);
 526
 527 static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 528                    const unsigned char *iv, int enc)
 529         {
 530         int ret, mode, bits;
 531         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 532
 533         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 534         bits = ctx->key_len*8;
 535         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 536             && !enc)
 537                 {
 538                     ret = 0;
 539                     aes_t4_set_decrypt_key(key, bits, ctx->cipher_data);
 540                     dat->block  = (block128_f)aes_t4_decrypt;
 541                     switch (bits) {
 542                     case 128:
 543                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 544                                                 (cbc128_f)aes128_t4_cbc_decrypt :
 545                                                 NULL;
 546                         break;
 547                     case 192:
 548                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 549                                                 (cbc128_f)aes192_t4_cbc_decrypt :
 550                                                 NULL;
 551                         break;
 552                     case 256:
 553                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 554                                                 (cbc128_f)aes256_t4_cbc_decrypt :
 555                                                 NULL;
 556                         break;
 557                     default:
 558                         ret = -1;
 559                     }
 560                 }
 561         else    {
 562                     ret = 0;
 563                     aes_t4_set_encrypt_key(key, bits, ctx->cipher_data);
 564                     dat->block  = (block128_f)aes_t4_encrypt;
 565                     switch (bits) {
 566                     case 128:
 567                         if (mode==EVP_CIPH_CBC_MODE)
 568                                 dat->stream.cbc = (cbc128_f)aes128_t4_cbc_encrypt;
 569                         else if (mode==EVP_CIPH_CTR_MODE)
 570                                 dat->stream.ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
 571                         else
 572                                 dat->stream.cbc = NULL;
 573                         break;
 574                     case 192:
 575                         if (mode==EVP_CIPH_CBC_MODE)
 576                                 dat->stream.cbc = (cbc128_f)aes192_t4_cbc_encrypt;
 577                         else if (mode==EVP_CIPH_CTR_MODE)
 578                                 dat->stream.ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
 579                         else
 580                                 dat->stream.cbc = NULL;
 581                         break;
 582                     case 256:
 583                         if (mode==EVP_CIPH_CBC_MODE)
 584                                 dat->stream.cbc = (cbc128_f)aes256_t4_cbc_encrypt;
 585                         else if (mode==EVP_CIPH_CTR_MODE)
 586                                 dat->stream.ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
 587                         else
 588                                 dat->stream.cbc = NULL;
 589                         break;
 590                     default:
 591                         ret = -1;
 592                     }
 593                 }
 594
 595         if(ret < 0)
 596                 {
 597                 EVPerr(EVP_F_AES_T4_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 598                 return 0;
 599                 }
 600
 601         return 1;
 602         }
 603
 604 #define aes_t4_cbc_cipher aes_cbc_cipher
 605 static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 606         const unsigned char *in, size_t len);
 607
 608 #define aes_t4_ecb_cipher aes_ecb_cipher
 609 static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 610         const unsigned char *in, size_t len);
 611
 612 #define aes_t4_ofb_cipher aes_ofb_cipher
 613 static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 614         const unsigned char *in,size_t len);
 615
 616 #define aes_t4_cfb_cipher aes_cfb_cipher
 617 static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 618         const unsigned char *in,size_t len);
 619
 620 #define aes_t4_cfb8_cipher aes_cfb8_cipher
 621 static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 622         const unsigned char *in,size_t len);
 623
 624 #define aes_t4_cfb1_cipher aes_cfb1_cipher
 625 static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 626         const unsigned char *in,size_t len);
 627
 628 #define aes_t4_ctr_cipher aes_ctr_cipher
 629 static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 630                 const unsigned char *in, size_t len);
 631
 632 static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 633                         const unsigned char *iv, int enc)
 634         {
 635         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 636         if (!iv && !key)
 637                 return 1;
 638         if (key)
 639                 {
 640                 int bits = ctx->key_len * 8;
 641                 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
 642                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 643                                 (block128_f)aes_t4_encrypt);
 644                 switch (bits) {
 645                     case 128:
 646                         gctx->ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
 647                         break;
 648                     case 192:
 649                         gctx->ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
 650                         break;
 651                     case 256:
 652                         gctx->ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
 653                         break;
 654                     default:
 655                         return 0;
 656                 }
 657                 /* If we have an iv can set it directly, otherwise use
 658                  * saved IV.
 659                  */
 660                 if (iv == NULL && gctx->iv_set)
 661                         iv = gctx->iv;
 662                 if (iv)
 663                         {
 664                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 665                         gctx->iv_set = 1;
 666                         }
 667                 gctx->key_set = 1;
 668                 }
 669         else
 670                 {
 671                 /* If key set use IV, otherwise copy */
 672                 if (gctx->key_set)
 673                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 674                 else
 675                         memcpy(gctx->iv, iv, gctx->ivlen);
 676                 gctx->iv_set = 1;
 677                 gctx->iv_gen = 0;
 678                 }
 679         return 1;
 680         }
 681
 682 #define aes_t4_gcm_cipher aes_gcm_cipher
 683 static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 684                 const unsigned char *in, size_t len);
 685
 686 static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 687                         const unsigned char *iv, int enc)
 688         {
 689         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 690         if (!iv && !key)
 691                 return 1;
 692
 693         if (key)
 694                 {
 695                 int bits = ctx->key_len * 4;
 696                 xctx->stream = NULL;
 697                 /* key_len is two AES keys */
 698                 if (enc)
 699                         {
 700                         aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
 701                         xctx->xts.block1 = (block128_f)aes_t4_encrypt;
 702                         switch (bits) {
 703                             case 128:
 704                                 xctx->stream = aes128_t4_xts_encrypt;
 705                                 break;
 706 #if 0 /* not yet */
 707                             case 192:
 708                                 xctx->stream = aes192_t4_xts_encrypt;
 709                                 break;
 710 #endif
 711                             case 256:
 712                                 xctx->stream = aes256_t4_xts_encrypt;
 713                                 break;
 714                             default:
 715                                 return 0;
 716                             }
 717                         }
 718                 else
 719                         {
 720                         aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 721                         xctx->xts.block1 = (block128_f)aes_t4_decrypt;
 722                         switch (bits) {
 723                             case 128:
 724                                 xctx->stream = aes128_t4_xts_decrypt;
 725                                 break;
 726 #if 0 /* not yet */
 727                             case 192:
 728                                 xctx->stream = aes192_t4_xts_decrypt;
 729                                 break;
 730 #endif
 731                             case 256:
 732                                 xctx->stream = aes256_t4_xts_decrypt;
 733                                 break;
 734                             default:
 735                                 return 0;
 736                             }
 737                         }
 738
 739                 aes_t4_set_encrypt_key(key + ctx->key_len/2,
 740                                                 ctx->key_len * 4, &xctx->ks2.ks);
 741                 xctx->xts.block2 = (block128_f)aes_t4_encrypt;
 742
 743                 xctx->xts.key1 = &xctx->ks1;
 744                 }
 745
 746         if (iv)
 747                 {
 748                 xctx->xts.key2 = &xctx->ks2;
 749                 memcpy(ctx->iv, iv, 16);
 750                 }
 751
 752         return 1;
 753         }
 754
 755 #define aes_t4_xts_cipher aes_xts_cipher
 756 static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 757                 const unsigned char *in, size_t len);
 758
 759 static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 760                         const unsigned char *iv, int enc)
 761         {
 762         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 763         if (!iv && !key)
 764                 return 1;
 765         if (key)
 766                 {
 767                 int bits = ctx->key_len * 8;
 768                 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
 769                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 770                                         &cctx->ks, (block128_f)aes_t4_encrypt);
 771 #if 0 /* not yet */
 772                 switch (bits) {
 773                     case 128:
 774                         cctx->str = enc?(ccm128_f)aes128_t4_ccm64_encrypt :
 775                                 (ccm128_f)ae128_t4_ccm64_decrypt;
 776                         break;
 777                     case 192:
 778                         cctx->str = enc?(ccm128_f)aes192_t4_ccm64_encrypt :
 779                                 (ccm128_f)ae192_t4_ccm64_decrypt;
 780                         break;
 781                     case 256:
 782                         cctx->str = enc?(ccm128_f)aes256_t4_ccm64_encrypt :
 783                                 (ccm128_f)ae256_t4_ccm64_decrypt;
 784                         break;
 785                     default:
 786                         return 0;
 787                     }
 788 #endif
 789                 cctx->key_set = 1;
 790                 }
 791         if (iv)
 792                 {
 793                 memcpy(ctx->iv, iv, 15 - cctx->L);
 794                 cctx->iv_set = 1;
 795                 }
 796         return 1;
 797         }
 798
 799 #define aes_t4_ccm_cipher aes_ccm_cipher
 800 static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 801                 const unsigned char *in, size_t len);
 802
 803 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 804 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
 805         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 806         flags|EVP_CIPH_##MODE##_MODE,   \
 807         aes_t4_init_key,                \
 808         aes_t4_##mode##_cipher,         \
 809         NULL,                           \
 810         sizeof(EVP_AES_KEY),            \
 811         NULL,NULL,NULL,NULL }; \
 812 static const EVP_CIPHER aes_##keylen##_##mode = { \
 813         nid##_##keylen##_##nmode,blocksize,     \
 814         keylen/8,ivlen, \
 815         flags|EVP_CIPH_##MODE##_MODE,   \
 816         aes_init_key,                   \
 817         aes_##mode##_cipher,            \
 818         NULL,                           \
 819         sizeof(EVP_AES_KEY),            \
 820         NULL,NULL,NULL,NULL }; \
 821 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 822 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
 823
 824 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 825 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
 826         nid##_##keylen##_##mode,blocksize, \
 827         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 828         flags|EVP_CIPH_##MODE##_MODE,   \
 829         aes_t4_##mode##_init_key,       \
 830         aes_t4_##mode##_cipher,         \
 831         aes_##mode##_cleanup,           \
 832         sizeof(EVP_AES_##MODE##_CTX),   \
 833         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 834 static const EVP_CIPHER aes_##keylen##_##mode = { \
 835         nid##_##keylen##_##mode,blocksize, \
 836         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 837         flags|EVP_CIPH_##MODE##_MODE,   \
 838         aes_##mode##_init_key,          \
 839         aes_##mode##_cipher,            \
 840         aes_##mode##_cleanup,           \
 841         sizeof(EVP_AES_##MODE##_CTX),   \
 842         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 843 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 844 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
 845
 846 #else
 847
 848 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 849 static const EVP_CIPHER aes_##keylen##_##mode = { \
 850         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 851         flags|EVP_CIPH_##MODE##_MODE,   \
 852         aes_init_key,                   \
 853         aes_##mode##_cipher,            \
 854         NULL,                           \
 855         sizeof(EVP_AES_KEY),            \
 856         NULL,NULL,NULL,NULL }; \
 857 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 858 { return &aes_##keylen##_##mode; }
 859
 860 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 861 static const EVP_CIPHER aes_##keylen##_##mode = { \
 862         nid##_##keylen##_##mode,blocksize, \
 863         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 864         flags|EVP_CIPH_##MODE##_MODE,   \
 865         aes_##mode##_init_key,          \
 866         aes_##mode##_cipher,            \
 867         aes_##mode##_cleanup,           \
 868         sizeof(EVP_AES_##MODE##_CTX),   \
 869         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 870 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 871 { return &aes_##keylen##_##mode; }
 872 #endif
 873
 874 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 875         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 876         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 877         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 878         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 879         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 880         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 881         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 882
 883 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 884                    const unsigned char *iv, int enc)
 885         {
 886         int ret, mode;
 887         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 888
 889         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 890         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 891             && !enc)
 892 #ifdef BSAES_CAPABLE
 893             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 894                 {
 895                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 896                 dat->block      = (block128_f)AES_decrypt;
 897                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 898                 }
 899             else
 900 #endif
 901 #ifdef VPAES_CAPABLE
 902             if (VPAES_CAPABLE)
 903                 {
 904                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 905                 dat->block      = (block128_f)vpaes_decrypt;
 906                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 907                                         (cbc128_f)vpaes_cbc_encrypt :
 908                                         NULL;
 909                 }
 910             else
 911 #endif
 912                 {
 913                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 914                 dat->block      = (block128_f)AES_decrypt;
 915                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 916                                         (cbc128_f)AES_cbc_encrypt :
 917                                         NULL;
 918                 }
 919         else
 920 #ifdef BSAES_CAPABLE
 921             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 922                 {
 923                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 924                 dat->block      = (block128_f)AES_encrypt;
 925                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 926                 }
 927             else
 928 #endif
 929 #ifdef VPAES_CAPABLE
 930             if (VPAES_CAPABLE)
 931                 {
 932                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 933                 dat->block      = (block128_f)vpaes_encrypt;
 934                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 935                                         (cbc128_f)vpaes_cbc_encrypt :
 936                                         NULL;
 937                 }
 938             else
 939 #endif
 940                 {
 941                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 942                 dat->block      = (block128_f)AES_encrypt;
 943                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 944                                         (cbc128_f)AES_cbc_encrypt :
 945                                         NULL;
 946 #ifdef AES_CTR_ASM
 947                 if (mode==EVP_CIPH_CTR_MODE)
 948                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 949 #endif
 950                 }
 951
 952         if(ret < 0)
 953                 {
 954                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 955                 return 0;
 956                 }
 957
 958         return 1;
 959         }
 960
 961 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 962         const unsigned char *in, size_t len)
 963 {
 964         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 965
 966         if (dat->stream.cbc)
 967                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 968         else if (ctx->encrypt)
 969                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 970         else
 971                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 972
 973         return 1;
 974 }
 975
 976 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 977         const unsigned char *in, size_t len)
 978 {
 979         size_t  bl = ctx->cipher->block_size;
 980         size_t  i;
 981         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 982
 983         if (len<bl)     return 1;
 984
 985         for (i=0,len-=bl;i<=len;i+=bl)
 986                 (*dat->block)(in+i,out+i,&dat->ks);
 987
 988         return 1;
 989 }
 990
 991 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 992         const unsigned char *in,size_t len)
 993 {
 994         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 995
 996         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 997                         ctx->iv,&ctx->num,dat->block);
 998         return 1;
 999 }
1000
1001 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1002         const unsigned char *in,size_t len)
1003 {
1004         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1005
1006         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
1007                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1008         return 1;
1009 }
1010
1011 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1012         const unsigned char *in,size_t len)
1013 {
1014         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1015
1016         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
1017                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1018         return 1;
1019 }
1020
1021 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1022         const unsigned char *in,size_t len)
1023 {
1024         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1025
1026         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
1027                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
1028                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1029                 return 1;
1030         }
1031
1032         while (len>=MAXBITCHUNK) {
1033                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
1034                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1035                 len-=MAXBITCHUNK;
1036         }
1037         if (len)
1038                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
1039                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1040
1041         return 1;
1042 }
1043
1044 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
1045                 const unsigned char *in, size_t len)
1046 {
1047         unsigned int num = ctx->num;
1048         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1049
1050         if (dat->stream.ctr)
1051                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
1052                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
1053         else
1054                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
1055                         ctx->iv,ctx->buf,&num,dat->block);
1056         ctx->num = (size_t)num;
1057         return 1;
1058 }
1059
1060 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
1061 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
1062 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
1063
1064 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
1065         {
1066         EVP_AES_GCM_CTX *gctx = c->cipher_data;
1067         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
1068         if (gctx->iv != c->iv)
1069                 OPENSSL_free(gctx->iv);
1070         return 1;
1071         }
1072
1073 /* increment counter (64-bit int) by 1 */
1074 static void ctr64_inc(unsigned char *counter) {
1075         int n=8;
1076         unsigned char  c;
1077
1078         do {
1079                 --n;
1080                 c = counter[n];
1081                 ++c;
1082                 counter[n] = c;
1083                 if (c) return;
1084         } while (n);
1085 }
1086
1087 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1088         {
1089         EVP_AES_GCM_CTX *gctx = c->cipher_data;
1090         switch (type)
1091                 {
1092         case EVP_CTRL_INIT:
1093                 gctx->key_set = 0;
1094                 gctx->iv_set = 0;
1095                 gctx->ivlen = c->cipher->iv_len;
1096                 gctx->iv = c->iv;
1097                 gctx->taglen = -1;
1098                 gctx->iv_gen = 0;
1099                 gctx->tls_aad_len = -1;
1100                 return 1;
1101
1102         case EVP_CTRL_GCM_SET_IVLEN:
1103                 if (arg <= 0)
1104                         return 0;
1105 #ifdef OPENSSL_FIPS
1106                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
1107                                                  && arg < 12)
1108                         return 0;
1109 #endif
1110                 /* Allocate memory for IV if needed */
1111                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
1112                         {
1113                         if (gctx->iv != c->iv)
1114                                 OPENSSL_free(gctx->iv);
1115                         gctx->iv = OPENSSL_malloc(arg);
1116                         if (!gctx->iv)
1117                                 return 0;
1118                         }
1119                 gctx->ivlen = arg;
1120                 return 1;
1121
1122         case EVP_CTRL_GCM_SET_TAG:
1123                 if (arg <= 0 || arg > 16 || c->encrypt)
1124                         return 0;
1125                 memcpy(c->buf, ptr, arg);
1126                 gctx->taglen = arg;
1127                 return 1;
1128
1129         case EVP_CTRL_GCM_GET_TAG:
1130                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
1131                         return 0;
1132                 memcpy(ptr, c->buf, arg);
1133                 return 1;
1134
1135         case EVP_CTRL_GCM_SET_IV_FIXED:
1136                 /* Special case: -1 length restores whole IV */
1137                 if (arg == -1)
1138                         {
1139                         memcpy(gctx->iv, ptr, gctx->ivlen);
1140                         gctx->iv_gen = 1;
1141                         return 1;
1142                         }
1143                 /* Fixed field must be at least 4 bytes and invocation field
1144                  * at least 8.
1145                  */
1146                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
1147                         return 0;
1148                 if (arg)
1149                         memcpy(gctx->iv, ptr, arg);
1150                 if (c->encrypt &&
1151                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
1152                         return 0;
1153                 gctx->iv_gen = 1;
1154                 return 1;
1155
1156         case EVP_CTRL_GCM_IV_GEN:
1157                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
1158                         return 0;
1159                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1160                 if (arg <= 0 || arg > gctx->ivlen)
1161                         arg = gctx->ivlen;
1162                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
1163                 /* Invocation field will be at least 8 bytes in size and
1164                  * so no need to check wrap around or increment more than
1165                  * last 8 bytes.
1166                  */
1167                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
1168                 gctx->iv_set = 1;
1169                 return 1;
1170
1171         case EVP_CTRL_GCM_SET_IV_INV:
1172                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
1173                         return 0;
1174                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
1175                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1176                 gctx->iv_set = 1;
1177                 return 1;
1178
1179         case EVP_CTRL_AEAD_TLS1_AAD:
1180                 /* Save the AAD for later use */
1181                 if (arg != 13)
1182                         return 0;
1183                 memcpy(c->buf, ptr, arg);
1184                 gctx->tls_aad_len = arg;
1185                         {
1186                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
1187                         /* Correct length for explicit IV */
1188                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1189                         /* If decrypting correct for tag too */
1190                         if (!c->encrypt)
1191                                 len -= EVP_GCM_TLS_TAG_LEN;
1192                         c->buf[arg-2] = len>>8;
1193                         c->buf[arg-1] = len & 0xff;
1194                         }
1195                 /* Extra padding: tag appended to record */
1196                 return EVP_GCM_TLS_TAG_LEN;
1197
1198         default:
1199                 return -1;
1200
1201                 }
1202         }
1203
1204 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1205                         const unsigned char *iv, int enc)
1206         {
1207         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1208         if (!iv && !key)
1209                 return 1;
1210         if (key)
1211                 { do {
1212 #ifdef BSAES_CAPABLE
1213                 if (BSAES_CAPABLE)
1214                         {
1215                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1216                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1217                                         (block128_f)AES_encrypt);
1218                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
1219                         break;
1220                         }
1221                 else
1222 #endif
1223 #ifdef VPAES_CAPABLE
1224                 if (VPAES_CAPABLE)
1225                         {
1226                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1227                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1228                                         (block128_f)vpaes_encrypt);
1229                         gctx->ctr = NULL;
1230                         break;
1231                         }
1232 #endif
1233                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
1234                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1235 #ifdef AES_CTR_ASM
1236                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
1237 #else
1238                 gctx->ctr = NULL;
1239 #endif
1240                 } while (0);
1241
1242                 /* If we have an iv can set it directly, otherwise use
1243                  * saved IV.
1244                  */
1245                 if (iv == NULL && gctx->iv_set)
1246                         iv = gctx->iv;
1247                 if (iv)
1248                         {
1249                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1250                         gctx->iv_set = 1;
1251                         }
1252                 gctx->key_set = 1;
1253                 }
1254         else
1255                 {
1256                 /* If key set use IV, otherwise copy */
1257                 if (gctx->key_set)
1258                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1259                 else
1260                         memcpy(gctx->iv, iv, gctx->ivlen);
1261                 gctx->iv_set = 1;
1262                 gctx->iv_gen = 0;
1263                 }
1264         return 1;
1265         }
1266
1267 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1268  * followed by the payload and finally the tag. On encrypt generate IV,
1269  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1270  * and verify tag.
1271  */
1272
1273 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1274                 const unsigned char *in, size_t len)
1275         {
1276         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1277         int rv = -1;
1278         /* Encrypt/decrypt must be performed in place */
1279         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
1280                 return -1;
1281         /* Set IV from start of buffer or generate IV and write to start
1282          * of buffer.
1283          */
1284         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1285                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1286                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1287                 goto err;
1288         /* Use saved AAD */
1289         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1290                 goto err;
1291         /* Fix buffer and length to point to payload */
1292         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1293         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1294         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1295         if (ctx->encrypt)
1296                 {
1297                 /* Encrypt payload */
1298                 if (gctx->ctr)
1299                         {
1300                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1301                                                         in, out, len,
1302                                                         gctx->ctr))
1303                                 goto err;
1304                         }
1305                 else    {
1306                         if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1307                                 goto err;
1308                         }
1309                 out += len;
1310                 /* Finally write tag */
1311                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1312                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1313                 }
1314         else
1315                 {
1316                 /* Decrypt */
1317                 if (gctx->ctr)
1318                         {
1319                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1320                                                         in, out, len,
1321                                                         gctx->ctr))
1322                                 goto err;
1323                         }
1324                 else    {
1325                         if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1326                                 goto err;
1327                         }
1328                 /* Retrieve tag */
1329                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1330                                         EVP_GCM_TLS_TAG_LEN);
1331                 /* If tag mismatch wipe buffer */
1332                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1333                         {
1334                         OPENSSL_cleanse(out, len);
1335                         goto err;
1336                         }
1337                 rv = len;
1338                 }
1339
1340         err:
1341         gctx->iv_set = 0;
1342         gctx->tls_aad_len = -1;
1343         return rv;
1344         }
1345
1346 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1347                 const unsigned char *in, size_t len)
1348         {
1349         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1350         /* If not set up, return error */
1351         if (!gctx->key_set)
1352                 return -1;
1353
1354         if (gctx->tls_aad_len >= 0)
1355                 return aes_gcm_tls_cipher(ctx, out, in, len);
1356
1357         if (!gctx->iv_set)
1358                 return -1;
1359         if (in)
1360                 {
1361                 if (out == NULL)
1362                         {
1363                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1364                                 return -1;
1365                         }
1366                 else if (ctx->encrypt)
1367                         {
1368                         if (gctx->ctr)
1369                                 {
1370                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1371                                                         in, out, len,
1372                                                         gctx->ctr))
1373                                         return -1;
1374                                 }
1375                         else    {
1376                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1377                                         return -1;
1378                                 }
1379                         }
1380                 else
1381                         {
1382                         if (gctx->ctr)
1383                                 {
1384                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1385                                                         in, out, len,
1386                                                         gctx->ctr))
1387                                         return -1;
1388                                 }
1389                         else    {
1390                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1391                                         return -1;
1392                                 }
1393                         }
1394                 return len;
1395                 }
1396         else
1397                 {
1398                 if (!ctx->encrypt)
1399                         {
1400                         if (gctx->taglen < 0)
1401                                 return -1;
1402                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1403                                         ctx->buf, gctx->taglen) != 0)
1404                                 return -1;
1405                         gctx->iv_set = 0;
1406                         return 0;
1407                         }
1408                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1409                 gctx->taglen = 16;
1410                 /* Don't reuse the IV */
1411                 gctx->iv_set = 0;
1412                 return 0;
1413                 }
1414
1415         }
1416
1417 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1418                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1419                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1420
1421 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1422                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1423 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1424                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1425 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1426                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1427
1428 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1429         {
1430         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1431         if (type != EVP_CTRL_INIT)
1432                 return -1;
1433         /* key1 and key2 are used as an indicator both key and IV are set */
1434         xctx->xts.key1 = NULL;
1435         xctx->xts.key2 = NULL;
1436         return 1;
1437         }
1438
1439 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1440                         const unsigned char *iv, int enc)
1441         {
1442         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1443         if (!iv && !key)
1444                 return 1;
1445
1446         if (key) do
1447                 {
1448 #ifdef AES_XTS_ASM
1449                 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1450 #else
1451                 xctx->stream = NULL;
1452 #endif
1453                 /* key_len is two AES keys */
1454 #ifdef BSAES_CAPABLE
1455                 if (BSAES_CAPABLE)
1456                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1457                 else
1458 #endif
1459 #ifdef VPAES_CAPABLE
1460                 if (VPAES_CAPABLE)
1461                     {
1462                     if (enc)
1463                         {
1464                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1465                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1466                         }
1467                     else
1468                         {
1469                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1470                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1471                         }
1472
1473                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1474                                                 ctx->key_len * 4, &xctx->ks2.ks);
1475                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1476
1477                 xctx->xts.key1 = &xctx->ks1;
1478                 break;
1479                 }
1480 #endif
1481                 if (enc)
1482                         {
1483                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1484                         xctx->xts.block1 = (block128_f)AES_encrypt;
1485                         }
1486                 else
1487                         {
1488                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1489                         xctx->xts.block1 = (block128_f)AES_decrypt;
1490                         }
1491
1492                 AES_set_encrypt_key(key + ctx->key_len/2,
1493                                                 ctx->key_len * 4, &xctx->ks2.ks);
1494                 xctx->xts.block2 = (block128_f)AES_encrypt;
1495
1496                 xctx->xts.key1 = &xctx->ks1;
1497                 } while (0);
1498
1499         if (iv)
1500                 {
1501                 xctx->xts.key2 = &xctx->ks2;
1502                 memcpy(ctx->iv, iv, 16);
1503                 }
1504
1505         return 1;
1506         }
1507
1508 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1509                 const unsigned char *in, size_t len)
1510         {
1511         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1512         if (!xctx->xts.key1 || !xctx->xts.key2)
1513                 return 0;
1514         if (!out || !in || len<AES_BLOCK_SIZE)
1515                 return 0;
1516 #ifdef OPENSSL_FIPS
1517         /* Requirement of SP800-38E */
1518         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1519                         (len > (1UL<<20)*16))
1520                 {
1521                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1522                 return 0;
1523                 }
1524 #endif
1525         if (xctx->stream)
1526                 (*xctx->stream)(in, out, len,
1527                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1528         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1529                                                                 ctx->encrypt))
1530                 return 0;
1531         return 1;
1532         }
1533
1534 #define aes_xts_cleanup NULL
1535
1536 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1537                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1538
1539 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1540 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1541
1542 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1543         {
1544         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1545         switch (type)
1546                 {
1547         case EVP_CTRL_INIT:
1548                 cctx->key_set = 0;
1549                 cctx->iv_set = 0;
1550                 cctx->L = 8;
1551                 cctx->M = 12;
1552                 cctx->tag_set = 0;
1553                 cctx->len_set = 0;
1554                 return 1;
1555
1556         case EVP_CTRL_CCM_SET_IVLEN:
1557                 arg = 15 - arg;
1558         case EVP_CTRL_CCM_SET_L:
1559                 if (arg < 2 || arg > 8)
1560                         return 0;
1561                 cctx->L = arg;
1562                 return 1;
1563
1564         case EVP_CTRL_CCM_SET_TAG:
1565                 if ((arg & 1) || arg < 4 || arg > 16)
1566                         return 0;
1567                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1568                         return 0;
1569                 if (ptr)
1570                         {
1571                         cctx->tag_set = 1;
1572                         memcpy(c->buf, ptr, arg);
1573                         }
1574                 cctx->M = arg;
1575                 return 1;
1576
1577         case EVP_CTRL_CCM_GET_TAG:
1578                 if (!c->encrypt || !cctx->tag_set)
1579                         return 0;
1580                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1581                         return 0;
1582                 cctx->tag_set = 0;
1583                 cctx->iv_set = 0;
1584                 cctx->len_set = 0;
1585                 return 1;
1586
1587         default:
1588                 return -1;
1589
1590                 }
1591         }
1592
1593 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1594                         const unsigned char *iv, int enc)
1595         {
1596         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1597         if (!iv && !key)
1598                 return 1;
1599         if (key) do
1600                 {
1601 #ifdef VPAES_CAPABLE
1602                 if (VPAES_CAPABLE)
1603                         {
1604                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks.ks);
1605                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1606                                         &cctx->ks, (block128_f)vpaes_encrypt);
1607                         cctx->str = NULL;
1608                         cctx->key_set = 1;
1609                         break;
1610                         }
1611 #endif
1612                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
1613                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1614                                         &cctx->ks, (block128_f)AES_encrypt);
1615                 cctx->str = NULL;
1616                 cctx->key_set = 1;
1617                 } while (0);
1618         if (iv)
1619                 {
1620                 memcpy(ctx->iv, iv, 15 - cctx->L);
1621                 cctx->iv_set = 1;
1622                 }
1623         return 1;
1624         }
1625
1626 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1627                 const unsigned char *in, size_t len)
1628         {
1629         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1630         CCM128_CONTEXT *ccm = &cctx->ccm;
1631         /* If not set up, return error */
1632         if (!cctx->iv_set && !cctx->key_set)
1633                 return -1;
1634         if (!ctx->encrypt && !cctx->tag_set)
1635                 return -1;
1636         if (!out)
1637                 {
1638                 if (!in)
1639                         {
1640                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1641                                 return -1;
1642                         cctx->len_set = 1;
1643                         return len;
1644                         }
1645                 /* If have AAD need message length */
1646                 if (!cctx->len_set && len)
1647                         return -1;
1648                 CRYPTO_ccm128_aad(ccm, in, len);
1649                 return len;
1650                 }
1651         /* EVP_*Final() doesn't return any data */
1652         if (!in)
1653                 return 0;
1654         /* If not set length yet do it */
1655         if (!cctx->len_set)
1656                 {
1657                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1658                         return -1;
1659                 cctx->len_set = 1;
1660                 }
1661         if (ctx->encrypt)
1662                 {
1663                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1664                                                 cctx->str) :
1665                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1666                         return -1;
1667                 cctx->tag_set = 1;
1668                 return len;
1669                 }
1670         else
1671                 {
1672                 int rv = -1;
1673                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1674                                                 cctx->str) :
1675                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1676                         {
1677                         unsigned char tag[16];
1678                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1679                                 {
1680                                 if (!memcmp(tag, ctx->buf, cctx->M))
1681                                         rv = len;
1682                                 }
1683                         }
1684                 if (rv == -1)
1685                         OPENSSL_cleanse(out, len);
1686                 cctx->iv_set = 0;
1687                 cctx->tag_set = 0;
1688                 cctx->len_set = 0;
1689                 return rv;
1690                 }
1691
1692         }
1693
1694 #define aes_ccm_cleanup NULL
1695
1696 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1697 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1698 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1699
1700 #endif