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         AES_KEY 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         AES_KEY 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         AES_KEY 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         AES_KEY 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
 149 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 150         ((defined(__i386)       || defined(__i386__)    || \
 151           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 152         defined(__x86_64)       || defined(__x86_64__)  || \
 153         defined(_M_AMD64)       || defined(_M_X64)      || \
 154         defined(__INTEL__)                              )
 155
 156 extern unsigned int OPENSSL_ia32cap_P[2];
 157
 158 #ifdef VPAES_ASM
 159 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 160 #endif
 161 #ifdef BSAES_ASM
 162 #define BSAES_CAPABLE   VPAES_CAPABLE
 163 #endif
 164 /*
 165  * AES-NI section
 166  */
 167 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 168
 169 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 170                         AES_KEY *key);
 171 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 172                         AES_KEY *key);
 173
 174 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 175                         const AES_KEY *key);
 176 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 177                         const AES_KEY *key);
 178
 179 void aesni_ecb_encrypt(const unsigned char *in,
 180                         unsigned char *out,
 181                         size_t length,
 182                         const AES_KEY *key,
 183                         int enc);
 184 void aesni_cbc_encrypt(const unsigned char *in,
 185                         unsigned char *out,
 186                         size_t length,
 187                         const AES_KEY *key,
 188                         unsigned char *ivec, int enc);
 189
 190 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 191                         unsigned char *out,
 192                         size_t blocks,
 193                         const void *key,
 194                         const unsigned char *ivec);
 195
 196 void aesni_xts_encrypt(const unsigned char *in,
 197                         unsigned char *out,
 198                         size_t length,
 199                         const AES_KEY *key1, const AES_KEY *key2,
 200                         const unsigned char iv[16]);
 201
 202 void aesni_xts_decrypt(const unsigned char *in,
 203                         unsigned char *out,
 204                         size_t length,
 205                         const AES_KEY *key1, const AES_KEY *key2,
 206                         const unsigned char iv[16]);
 207
 208 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 209                         unsigned char *out,
 210                         size_t blocks,
 211                         const void *key,
 212                         const unsigned char ivec[16],
 213                         unsigned char cmac[16]);
 214
 215 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 216                         unsigned char *out,
 217                         size_t blocks,
 218                         const void *key,
 219                         const unsigned char ivec[16],
 220                         unsigned char cmac[16]);
 221
 222 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 223                    const unsigned char *iv, int enc)
 224         {
 225         int ret, mode;
 226         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 227
 228         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 229         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 230             && !enc)
 231                 {
 232                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 233                 dat->block      = (block128_f)aesni_decrypt;
 234                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 235                                         (cbc128_f)aesni_cbc_encrypt :
 236                                         NULL;
 237                 }
 238         else    {
 239                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 240                 dat->block      = (block128_f)aesni_encrypt;
 241                 if (mode==EVP_CIPH_CBC_MODE)
 242                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 243                 else if (mode==EVP_CIPH_CTR_MODE)
 244                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 245                 else
 246                         dat->stream.cbc = NULL;
 247                 }
 248
 249         if(ret < 0)
 250                 {
 251                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 252                 return 0;
 253                 }
 254
 255         return 1;
 256         }
 257
 258 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 259         const unsigned char *in, size_t len)
 260 {
 261         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 262
 263         return 1;
 264 }
 265
 266 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 267         const unsigned char *in, size_t len)
 268 {
 269         size_t  bl = ctx->cipher->block_size;
 270
 271         if (len<bl)     return 1;
 272
 273         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 274
 275         return 1;
 276 }
 277
 278 #define aesni_ofb_cipher aes_ofb_cipher
 279 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 280         const unsigned char *in,size_t len);
 281
 282 #define aesni_cfb_cipher aes_cfb_cipher
 283 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 284         const unsigned char *in,size_t len);
 285
 286 #define aesni_cfb8_cipher aes_cfb8_cipher
 287 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 288         const unsigned char *in,size_t len);
 289
 290 #define aesni_cfb1_cipher aes_cfb1_cipher
 291 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 292         const unsigned char *in,size_t len);
 293
 294 #define aesni_ctr_cipher aes_ctr_cipher
 295 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 296                 const unsigned char *in, size_t len);
 297
 298 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 299                         const unsigned char *iv, int enc)
 300         {
 301         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 302         if (!iv && !key)
 303                 return 1;
 304         if (key)
 305                 {
 306                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 307                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 308                                 (block128_f)aesni_encrypt);
 309                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 310                 /* If we have an iv can set it directly, otherwise use
 311                  * saved IV.
 312                  */
 313                 if (iv == NULL && gctx->iv_set)
 314                         iv = gctx->iv;
 315                 if (iv)
 316                         {
 317                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 318                         gctx->iv_set = 1;
 319                         }
 320                 gctx->key_set = 1;
 321                 }
 322         else
 323                 {
 324                 /* If key set use IV, otherwise copy */
 325                 if (gctx->key_set)
 326                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 327                 else
 328                         memcpy(gctx->iv, iv, gctx->ivlen);
 329                 gctx->iv_set = 1;
 330                 gctx->iv_gen = 0;
 331                 }
 332         return 1;
 333         }
 334
 335 #define aesni_gcm_cipher aes_gcm_cipher
 336 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 337                 const unsigned char *in, size_t len);
 338
 339 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 340                         const unsigned char *iv, int enc)
 341         {
 342         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 343         if (!iv && !key)
 344                 return 1;
 345
 346         if (key)
 347                 {
 348                 /* key_len is two AES keys */
 349                 if (enc)
 350                         {
 351                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 352                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 353                         xctx->stream = aesni_xts_encrypt;
 354                         }
 355                 else
 356                         {
 357                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 358                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 359                         xctx->stream = aesni_xts_decrypt;
 360                         }
 361
 362                 aesni_set_encrypt_key(key + ctx->key_len/2,
 363                                                 ctx->key_len * 4, &xctx->ks2);
 364                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 365
 366                 xctx->xts.key1 = &xctx->ks1;
 367                 }
 368
 369         if (iv)
 370                 {
 371                 xctx->xts.key2 = &xctx->ks2;
 372                 memcpy(ctx->iv, iv, 16);
 373                 }
 374
 375         return 1;
 376         }
 377
 378 #define aesni_xts_cipher aes_xts_cipher
 379 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 380                 const unsigned char *in, size_t len);
 381
 382 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 383                         const unsigned char *iv, int enc)
 384         {
 385         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 386         if (!iv && !key)
 387                 return 1;
 388         if (key)
 389                 {
 390                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
 391                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 392                                         &cctx->ks, (block128_f)aesni_encrypt);
 393                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 394                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 395                 cctx->key_set = 1;
 396                 }
 397         if (iv)
 398                 {
 399                 memcpy(ctx->iv, iv, 15 - cctx->L);
 400                 cctx->iv_set = 1;
 401                 }
 402         return 1;
 403         }
 404
 405 #define aesni_ccm_cipher aes_ccm_cipher
 406 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 407                 const unsigned char *in, size_t len);
 408
 409 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 410 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 411         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 412         flags|EVP_CIPH_##MODE##_MODE,   \
 413         aesni_init_key,                 \
 414         aesni_##mode##_cipher,          \
 415         NULL,                           \
 416         sizeof(EVP_AES_KEY),            \
 417         NULL,NULL,NULL,NULL }; \
 418 static const EVP_CIPHER aes_##keylen##_##mode = { \
 419         nid##_##keylen##_##nmode,blocksize,     \
 420         keylen/8,ivlen, \
 421         flags|EVP_CIPH_##MODE##_MODE,   \
 422         aes_init_key,                   \
 423         aes_##mode##_cipher,            \
 424         NULL,                           \
 425         sizeof(EVP_AES_KEY),            \
 426         NULL,NULL,NULL,NULL }; \
 427 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 428 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 429
 430 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 431 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 432         nid##_##keylen##_##mode,blocksize, \
 433         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 434         flags|EVP_CIPH_##MODE##_MODE,   \
 435         aesni_##mode##_init_key,        \
 436         aesni_##mode##_cipher,          \
 437         aes_##mode##_cleanup,           \
 438         sizeof(EVP_AES_##MODE##_CTX),   \
 439         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 440 static const EVP_CIPHER aes_##keylen##_##mode = { \
 441         nid##_##keylen##_##mode,blocksize, \
 442         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 443         flags|EVP_CIPH_##MODE##_MODE,   \
 444         aes_##mode##_init_key,          \
 445         aes_##mode##_cipher,            \
 446         aes_##mode##_cleanup,           \
 447         sizeof(EVP_AES_##MODE##_CTX),   \
 448         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 449 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 450 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 451
 452 #else
 453
 454 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 455 static const EVP_CIPHER aes_##keylen##_##mode = { \
 456         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 457         flags|EVP_CIPH_##MODE##_MODE,   \
 458         aes_init_key,                   \
 459         aes_##mode##_cipher,            \
 460         NULL,                           \
 461         sizeof(EVP_AES_KEY),            \
 462         NULL,NULL,NULL,NULL }; \
 463 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 464 { return &aes_##keylen##_##mode; }
 465
 466 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 467 static const EVP_CIPHER aes_##keylen##_##mode = { \
 468         nid##_##keylen##_##mode,blocksize, \
 469         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 470         flags|EVP_CIPH_##MODE##_MODE,   \
 471         aes_##mode##_init_key,          \
 472         aes_##mode##_cipher,            \
 473         aes_##mode##_cleanup,           \
 474         sizeof(EVP_AES_##MODE##_CTX),   \
 475         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 476 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 477 { return &aes_##keylen##_##mode; }
 478 #endif
 479
 480 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 481         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 482         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 483         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 484         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 485         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 486         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 487         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 488
 489 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 490                    const unsigned char *iv, int enc)
 491         {
 492         int ret, mode;
 493         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 494
 495         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 496         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 497             && !enc)
 498 #ifdef BSAES_CAPABLE
 499             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 500                 {
 501                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 502                 dat->block      = (block128_f)AES_decrypt;
 503                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 504                 }
 505             else
 506 #endif
 507 #ifdef VPAES_CAPABLE
 508             if (VPAES_CAPABLE)
 509                 {
 510                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 511                 dat->block      = (block128_f)vpaes_decrypt;
 512                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 513                                         (cbc128_f)vpaes_cbc_encrypt :
 514                                         NULL;
 515                 }
 516             else
 517 #endif
 518                 {
 519                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 520                 dat->block      = (block128_f)AES_decrypt;
 521                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 522                                         (cbc128_f)AES_cbc_encrypt :
 523                                         NULL;
 524                 }
 525         else
 526 #ifdef BSAES_CAPABLE
 527             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 528                 {
 529                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 530                 dat->block      = (block128_f)AES_encrypt;
 531                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 532                 }
 533             else
 534 #endif
 535 #ifdef VPAES_CAPABLE
 536             if (VPAES_CAPABLE)
 537                 {
 538                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 539                 dat->block      = (block128_f)vpaes_encrypt;
 540                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 541                                         (cbc128_f)vpaes_cbc_encrypt :
 542                                         NULL;
 543                 }
 544             else
 545 #endif
 546                 {
 547                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 548                 dat->block      = (block128_f)AES_encrypt;
 549                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 550                                         (cbc128_f)AES_cbc_encrypt :
 551                                         NULL;
 552 #ifdef AES_CTR_ASM
 553                 if (mode==EVP_CIPH_CTR_MODE)
 554                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 555 #endif
 556                 }
 557
 558         if(ret < 0)
 559                 {
 560                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 561                 return 0;
 562                 }
 563
 564         return 1;
 565         }
 566
 567 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 568         const unsigned char *in, size_t len)
 569 {
 570         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 571
 572         if (dat->stream.cbc)
 573                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 574         else if (ctx->encrypt)
 575                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 576         else
 577                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 578
 579         return 1;
 580 }
 581
 582 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 583         const unsigned char *in, size_t len)
 584 {
 585         size_t  bl = ctx->cipher->block_size;
 586         size_t  i;
 587         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 588
 589         if (len<bl)     return 1;
 590
 591         for (i=0,len-=bl;i<=len;i+=bl)
 592                 (*dat->block)(in+i,out+i,&dat->ks);
 593
 594         return 1;
 595 }
 596
 597 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 598         const unsigned char *in,size_t len)
 599 {
 600         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 601
 602         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 603                         ctx->iv,&ctx->num,dat->block);
 604         return 1;
 605 }
 606
 607 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 608         const unsigned char *in,size_t len)
 609 {
 610         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 611
 612         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
 613                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 614         return 1;
 615 }
 616
 617 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 618         const unsigned char *in,size_t len)
 619 {
 620         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 621
 622         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
 623                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 624         return 1;
 625 }
 626
 627 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 628         const unsigned char *in,size_t len)
 629 {
 630         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 631
 632         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 633                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
 634                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 635                 return 1;
 636         }
 637
 638         while (len>=MAXBITCHUNK) {
 639                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
 640                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 641                 len-=MAXBITCHUNK;
 642         }
 643         if (len)
 644                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
 645                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 646
 647         return 1;
 648 }
 649
 650 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
 651                 const unsigned char *in, size_t len)
 652 {
 653         unsigned int num = ctx->num;
 654         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 655
 656         if (dat->stream.ctr)
 657                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
 658                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
 659         else
 660                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
 661                         ctx->iv,ctx->buf,&num,dat->block);
 662         ctx->num = (size_t)num;
 663         return 1;
 664 }
 665
 666 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
 667 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
 668 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
 669
 670 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
 671         {
 672         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 673         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
 674         if (gctx->iv != c->iv)
 675                 OPENSSL_free(gctx->iv);
 676         return 1;
 677         }
 678
 679 /* increment counter (64-bit int) by 1 */
 680 static void ctr64_inc(unsigned char *counter) {
 681         int n=8;
 682         unsigned char  c;
 683
 684         do {
 685                 --n;
 686                 c = counter[n];
 687                 ++c;
 688                 counter[n] = c;
 689                 if (c) return;
 690         } while (n);
 691 }
 692
 693 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 694         {
 695         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 696         switch (type)
 697                 {
 698         case EVP_CTRL_INIT:
 699                 gctx->key_set = 0;
 700                 gctx->iv_set = 0;
 701                 gctx->ivlen = c->cipher->iv_len;
 702                 gctx->iv = c->iv;
 703                 gctx->taglen = -1;
 704                 gctx->iv_gen = 0;
 705                 gctx->tls_aad_len = -1;
 706                 return 1;
 707
 708         case EVP_CTRL_GCM_SET_IVLEN:
 709                 if (arg <= 0)
 710                         return 0;
 711 #ifdef OPENSSL_FIPS
 712                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
 713                                                  && arg < 12)
 714                         return 0;
 715 #endif
 716                 /* Allocate memory for IV if needed */
 717                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
 718                         {
 719                         if (gctx->iv != c->iv)
 720                                 OPENSSL_free(gctx->iv);
 721                         gctx->iv = OPENSSL_malloc(arg);
 722                         if (!gctx->iv)
 723                                 return 0;
 724                         }
 725                 gctx->ivlen = arg;
 726                 return 1;
 727
 728         case EVP_CTRL_GCM_SET_TAG:
 729                 if (arg <= 0 || arg > 16 || c->encrypt)
 730                         return 0;
 731                 memcpy(c->buf, ptr, arg);
 732                 gctx->taglen = arg;
 733                 return 1;
 734
 735         case EVP_CTRL_GCM_GET_TAG:
 736                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
 737                         return 0;
 738                 memcpy(ptr, c->buf, arg);
 739                 return 1;
 740
 741         case EVP_CTRL_GCM_SET_IV_FIXED:
 742                 /* Special case: -1 length restores whole IV */
 743                 if (arg == -1)
 744                         {
 745                         memcpy(gctx->iv, ptr, gctx->ivlen);
 746                         gctx->iv_gen = 1;
 747                         return 1;
 748                         }
 749                 /* Fixed field must be at least 4 bytes and invocation field
 750                  * at least 8.
 751                  */
 752                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
 753                         return 0;
 754                 if (arg)
 755                         memcpy(gctx->iv, ptr, arg);
 756                 if (c->encrypt &&
 757                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
 758                         return 0;
 759                 gctx->iv_gen = 1;
 760                 return 1;
 761
 762         case EVP_CTRL_GCM_IV_GEN:
 763                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
 764                         return 0;
 765                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 766                 if (arg <= 0 || arg > gctx->ivlen)
 767                         arg = gctx->ivlen;
 768                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
 769                 /* Invocation field will be at least 8 bytes in size and
 770                  * so no need to check wrap around or increment more than
 771                  * last 8 bytes.
 772                  */
 773                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
 774                 gctx->iv_set = 1;
 775                 return 1;
 776
 777         case EVP_CTRL_GCM_SET_IV_INV:
 778                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
 779                         return 0;
 780                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
 781                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 782                 gctx->iv_set = 1;
 783                 return 1;
 784
 785         case EVP_CTRL_AEAD_TLS1_AAD:
 786                 /* Save the AAD for later use */
 787                 if (arg != 13)
 788                         return 0;
 789                 memcpy(c->buf, ptr, arg);
 790                 gctx->tls_aad_len = arg;
 791                         {
 792                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
 793                         /* Correct length for explicit IV */
 794                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
 795                         /* If decrypting correct for tag too */
 796                         if (!c->encrypt)
 797                                 len -= EVP_GCM_TLS_TAG_LEN;
 798                         c->buf[arg-2] = len>>8;
 799                         c->buf[arg-1] = len & 0xff;
 800                         }
 801                 /* Extra padding: tag appended to record */
 802                 return EVP_GCM_TLS_TAG_LEN;
 803
 804         default:
 805                 return -1;
 806
 807                 }
 808         }
 809
 810 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 811                         const unsigned char *iv, int enc)
 812         {
 813         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 814         if (!iv && !key)
 815                 return 1;
 816         if (key)
 817                 { do {
 818 #ifdef BSAES_CAPABLE
 819                 if (BSAES_CAPABLE)
 820                         {
 821                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 822                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 823                                         (block128_f)AES_encrypt);
 824                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 825                         break;
 826                         }
 827                 else
 828 #endif
 829 #ifdef VPAES_CAPABLE
 830                 if (VPAES_CAPABLE)
 831                         {
 832                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 833                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 834                                         (block128_f)vpaes_encrypt);
 835                         gctx->ctr = NULL;
 836                         break;
 837                         }
 838 #endif
 839                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 840                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
 841 #ifdef AES_CTR_ASM
 842                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
 843 #else
 844                 gctx->ctr = NULL;
 845 #endif
 846                 } while (0);
 847
 848                 /* If we have an iv can set it directly, otherwise use
 849                  * saved IV.
 850                  */
 851                 if (iv == NULL && gctx->iv_set)
 852                         iv = gctx->iv;
 853                 if (iv)
 854                         {
 855                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 856                         gctx->iv_set = 1;
 857                         }
 858                 gctx->key_set = 1;
 859                 }
 860         else
 861                 {
 862                 /* If key set use IV, otherwise copy */
 863                 if (gctx->key_set)
 864                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 865                 else
 866                         memcpy(gctx->iv, iv, gctx->ivlen);
 867                 gctx->iv_set = 1;
 868                 gctx->iv_gen = 0;
 869                 }
 870         return 1;
 871         }
 872
 873 /* Handle TLS GCM packet format. This consists of the last portion of the IV
 874  * followed by the payload and finally the tag. On encrypt generate IV,
 875  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
 876  * and verify tag.
 877  */
 878
 879 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 880                 const unsigned char *in, size_t len)
 881         {
 882         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 883         int rv = -1;
 884         /* Encrypt/decrypt must be performed in place */
 885         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
 886                 return -1;
 887         /* Set IV from start of buffer or generate IV and write to start
 888          * of buffer.
 889          */
 890         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
 891                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
 892                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
 893                 goto err;
 894         /* Use saved AAD */
 895         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
 896                 goto err;
 897         /* Fix buffer and length to point to payload */
 898         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 899         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 900         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 901         if (ctx->encrypt)
 902                 {
 903                 /* Encrypt payload */
 904                 if (gctx->ctr)
 905                         {
 906                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 907                                                         in, out, len,
 908                                                         gctx->ctr))
 909                                 goto err;
 910                         }
 911                 else    {
 912                         if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
 913                                 goto err;
 914                         }
 915                 out += len;
 916                 /* Finally write tag */
 917                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
 918                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 919                 }
 920         else
 921                 {
 922                 /* Decrypt */
 923                 if (gctx->ctr)
 924                         {
 925                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
 926                                                         in, out, len,
 927                                                         gctx->ctr))
 928                                 goto err;
 929                         }
 930                 else    {
 931                         if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
 932                                 goto err;
 933                         }
 934                 /* Retrieve tag */
 935                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
 936                                         EVP_GCM_TLS_TAG_LEN);
 937                 /* If tag mismatch wipe buffer */
 938                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
 939                         {
 940                         OPENSSL_cleanse(out, len);
 941                         goto err;
 942                         }
 943                 rv = len;
 944                 }
 945
 946         err:
 947         gctx->iv_set = 0;
 948         gctx->tls_aad_len = -1;
 949         return rv;
 950         }
 951
 952 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 953                 const unsigned char *in, size_t len)
 954         {
 955         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 956         /* If not set up, return error */
 957         if (!gctx->key_set)
 958                 return -1;
 959
 960         if (gctx->tls_aad_len >= 0)
 961                 return aes_gcm_tls_cipher(ctx, out, in, len);
 962
 963         if (!gctx->iv_set)
 964                 return -1;
 965         if (!ctx->encrypt && gctx->taglen < 0)
 966                 return -1;
 967         if (in)
 968                 {
 969                 if (out == NULL)
 970                         {
 971                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
 972                                 return -1;
 973                         }
 974                 else if (ctx->encrypt)
 975                         {
 976                         if (gctx->ctr)
 977                                 {
 978                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 979                                                         in, out, len,
 980                                                         gctx->ctr))
 981                                         return -1;
 982                                 }
 983                         else    {
 984                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
 985                                         return -1;
 986                                 }
 987                         }
 988                 else
 989                         {
 990                         if (gctx->ctr)
 991                                 {
 992                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
 993                                                         in, out, len,
 994                                                         gctx->ctr))
 995                                         return -1;
 996                                 }
 997                         else    {
 998                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
 999                                         return -1;
1000                                 }
1001                         }
1002                 return len;
1003                 }
1004         else
1005                 {
1006                 if (!ctx->encrypt)
1007                         {
1008                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1009                                         ctx->buf, gctx->taglen) != 0)
1010                                 return -1;
1011                         gctx->iv_set = 0;
1012                         return 0;
1013                         }
1014                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1015                 gctx->taglen = 16;
1016                 /* Don't reuse the IV */
1017                 gctx->iv_set = 0;
1018                 return 0;
1019                 }
1020
1021         }
1022
1023 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1024                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1025                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1026
1027 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1028                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1029 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1030                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1031 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1032                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1033
1034 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1035         {
1036         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1037         if (type != EVP_CTRL_INIT)
1038                 return -1;
1039         /* key1 and key2 are used as an indicator both key and IV are set */
1040         xctx->xts.key1 = NULL;
1041         xctx->xts.key2 = NULL;
1042         return 1;
1043         }
1044
1045 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1046                         const unsigned char *iv, int enc)
1047         {
1048         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1049         if (!iv && !key)
1050                 return 1;
1051
1052         if (key) do
1053                 {
1054                 xctx->stream = NULL;
1055                 /* key_len is two AES keys */
1056 #ifdef BSAES_CAPABLE
1057                 if (BSAES_CAPABLE)
1058                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1059                 else
1060 #endif
1061 #ifdef VPAES_CAPABLE
1062                 if (VPAES_CAPABLE)
1063                     {
1064                     if (enc)
1065                         {
1066                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1067                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1068                         }
1069                     else
1070                         {
1071                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1072                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1073                         }
1074
1075                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1076                                                 ctx->key_len * 4, &xctx->ks2);
1077                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1078
1079                 xctx->xts.key1 = &xctx->ks1;
1080                 break;
1081                 }
1082 #endif
1083                 if (enc)
1084                         {
1085                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1086                         xctx->xts.block1 = (block128_f)AES_encrypt;
1087                         }
1088                 else
1089                         {
1090                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1091                         xctx->xts.block1 = (block128_f)AES_decrypt;
1092                         }
1093
1094                 AES_set_encrypt_key(key + ctx->key_len/2,
1095                                                 ctx->key_len * 4, &xctx->ks2);
1096                 xctx->xts.block2 = (block128_f)AES_encrypt;
1097
1098                 xctx->xts.key1 = &xctx->ks1;
1099                 } while (0);
1100
1101         if (iv)
1102                 {
1103                 xctx->xts.key2 = &xctx->ks2;
1104                 memcpy(ctx->iv, iv, 16);
1105                 }
1106
1107         return 1;
1108         }
1109
1110 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1111                 const unsigned char *in, size_t len)
1112         {
1113         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1114         if (!xctx->xts.key1 || !xctx->xts.key2)
1115                 return 0;
1116         if (!out || !in || len<AES_BLOCK_SIZE)
1117                 return 0;
1118 #ifdef OPENSSL_FIPS
1119         /* Requirement of SP800-38E */
1120         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1121                         (len > (1UL<<20)*16))
1122                 {
1123                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1124                 return 0;
1125                 }
1126 #endif
1127         if (xctx->stream)
1128                 (*xctx->stream)(in, out, len,
1129                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1130         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1131                                                                 ctx->encrypt))
1132                 return 0;
1133         return 1;
1134         }
1135
1136 #define aes_xts_cleanup NULL
1137
1138 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1139                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1140
1141 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1142 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1143
1144 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1145         {
1146         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1147         switch (type)
1148                 {
1149         case EVP_CTRL_INIT:
1150                 cctx->key_set = 0;
1151                 cctx->iv_set = 0;
1152                 cctx->L = 8;
1153                 cctx->M = 12;
1154                 cctx->tag_set = 0;
1155                 cctx->len_set = 0;
1156                 return 1;
1157
1158         case EVP_CTRL_CCM_SET_IVLEN:
1159                 arg = 15 - arg;
1160         case EVP_CTRL_CCM_SET_L:
1161                 if (arg < 2 || arg > 8)
1162                         return 0;
1163                 cctx->L = arg;
1164                 return 1;
1165
1166         case EVP_CTRL_CCM_SET_TAG:
1167                 if ((arg & 1) || arg < 4 || arg > 16)
1168                         return 0;
1169                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1170                         return 0;
1171                 if (ptr)
1172                         {
1173                         cctx->tag_set = 1;
1174                         memcpy(c->buf, ptr, arg);
1175                         }
1176                 cctx->M = arg;
1177                 return 1;
1178
1179         case EVP_CTRL_CCM_GET_TAG:
1180                 if (!c->encrypt || !cctx->tag_set)
1181                         return 0;
1182                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1183                         return 0;
1184                 cctx->tag_set = 0;
1185                 cctx->iv_set = 0;
1186                 cctx->len_set = 0;
1187                 return 1;
1188
1189         default:
1190                 return -1;
1191
1192                 }
1193         }
1194
1195 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1196                         const unsigned char *iv, int enc)
1197         {
1198         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1199         if (!iv && !key)
1200                 return 1;
1201         if (key) do
1202                 {
1203 #ifdef VPAES_CAPABLE
1204                 if (VPAES_CAPABLE)
1205                         {
1206                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1207                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1208                                         &cctx->ks, (block128_f)vpaes_encrypt);
1209                         cctx->key_set = 1;
1210                         break;
1211                         }
1212 #endif
1213                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1214                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1215                                         &cctx->ks, (block128_f)AES_encrypt);
1216                 cctx->str = NULL;
1217                 cctx->key_set = 1;
1218                 } while (0);
1219         if (iv)
1220                 {
1221                 memcpy(ctx->iv, iv, 15 - cctx->L);
1222                 cctx->iv_set = 1;
1223                 }
1224         return 1;
1225         }
1226
1227 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1228                 const unsigned char *in, size_t len)
1229         {
1230         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1231         CCM128_CONTEXT *ccm = &cctx->ccm;
1232         /* If not set up, return error */
1233         if (!cctx->iv_set && !cctx->key_set)
1234                 return -1;
1235         if (!ctx->encrypt && !cctx->tag_set)
1236                 return -1;
1237         if (!out)
1238                 {
1239                 if (!in)
1240                         {
1241                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1242                                 return -1;
1243                         cctx->len_set = 1;
1244                         return len;
1245                         }
1246                 /* If have AAD need message length */
1247                 if (!cctx->len_set && len)
1248                         return -1;
1249                 CRYPTO_ccm128_aad(ccm, in, len);
1250                 return len;
1251                 }
1252         /* EVP_*Final() doesn't return any data */
1253         if (!in)
1254                 return 0;
1255         /* If not set length yet do it */
1256         if (!cctx->len_set)
1257                 {
1258                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1259                         return -1;
1260                 cctx->len_set = 1;
1261                 }
1262         if (ctx->encrypt)
1263                 {
1264                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1265                                                 cctx->str) :
1266                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1267                         return -1;
1268                 cctx->tag_set = 1;
1269                 return len;
1270                 }
1271         else
1272                 {
1273                 int rv = -1;
1274                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1275                                                 cctx->str) :
1276                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1277                         {
1278                         unsigned char tag[16];
1279                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1280                                 {
1281                                 if (!memcmp(tag, ctx->buf, cctx->M))
1282                                         rv = len;
1283                                 }
1284                         }
1285                 if (rv == -1)
1286                         OPENSSL_cleanse(out, len);
1287                 cctx->iv_set = 0;
1288                 cctx->tag_set = 0;
1289                 cctx->len_set = 0;
1290                 return rv;
1291                 }
1292
1293         }
1294
1295 #define aes_ccm_cleanup NULL
1296
1297 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1298 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1299 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1300
1301 #endif