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 #include <openssl/opensslconf.h>
  52 #ifndef OPENSSL_NO_AES
  53 #include <openssl/evp.h>
  54 #include <openssl/err.h>
  55 #include <string.h>
  56 #include <assert.h>
  57 #include <openssl/aes.h>
  58 #include "evp_locl.h"
  59 #include "modes_lcl.h"
  60 #include <openssl/rand.h>
  61
  62 #ifndef OPENSSL_FIPSCANISTER
  63 #undef EVP_CIPH_FLAG_FIPS
  64 #define EVP_CIPH_FLAG_FIPS 0
  65 #endif
  66
  67 typedef struct
  68         {
  69         AES_KEY ks;
  70         block128_f block;
  71         union {
  72                 cbc128_f cbc;
  73                 ctr128_f ctr;
  74         } stream;
  75         } EVP_AES_KEY;
  76
  77 typedef struct
  78         {
  79         AES_KEY ks;             /* AES key schedule to use */
  80         int key_set;            /* Set if key initialised */
  81         int iv_set;             /* Set if an iv is set */
  82         GCM128_CONTEXT gcm;
  83         unsigned char *iv;      /* Temporary IV store */
  84         int ivlen;              /* IV length */
  85         int taglen;
  86         int iv_gen;             /* It is OK to generate IVs */
  87         int tls_aad_len;        /* TLS AAD length */
  88         ctr128_f ctr;
  89         } EVP_AES_GCM_CTX;
  90
  91 typedef struct
  92         {
  93         AES_KEY ks1, ks2;       /* AES key schedules to use */
  94         XTS128_CONTEXT xts;
  95         void     (*stream)(const unsigned char *in,
  96                         unsigned char *out, size_t length,
  97                         const AES_KEY *key1, const AES_KEY *key2,
  98                         const unsigned char iv[16]);
  99         } EVP_AES_XTS_CTX;
 100
 101 typedef struct
 102         {
 103         AES_KEY ks;             /* AES key schedule to use */
 104         int key_set;            /* Set if key initialised */
 105         int iv_set;             /* Set if an iv is set */
 106         int tag_set;            /* Set if tag is valid */
 107         int len_set;            /* Set if message length set */
 108         int L, M;               /* L and M parameters from RFC3610 */
 109         CCM128_CONTEXT ccm;
 110         ccm128_f str;
 111         } EVP_AES_CCM_CTX;
 112
 113 #define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
 114
 115 #ifdef VPAES_ASM
 116 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
 117                         AES_KEY *key);
 118 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
 119                         AES_KEY *key);
 120
 121 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
 122                         const AES_KEY *key);
 123 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
 124                         const AES_KEY *key);
 125
 126 void vpaes_cbc_encrypt(const unsigned char *in,
 127                         unsigned char *out,
 128                         size_t length,
 129                         const AES_KEY *key,
 130                         unsigned char *ivec, int enc);
 131 #endif
 132 #ifdef BSAES_ASM
 133 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
 134                         size_t length, const AES_KEY *key,
 135                         unsigned char ivec[16], int enc);
 136 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
 137                         size_t len, const AES_KEY *key,
 138                         const unsigned char ivec[16]);
 139 void bsaes_xts_encrypt(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 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
 143                         size_t len, const AES_KEY *key1,
 144                         const AES_KEY *key2, const unsigned char iv[16]);
 145 #endif
 146 #ifdef AES_CTR_ASM
 147 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 148                         size_t blocks, const AES_KEY *key,
 149                         const unsigned char ivec[AES_BLOCK_SIZE]);
 150 #endif
 151 #ifdef AES_XTS_ASM
 152 void AES_xts_encrypt(const char *inp,char *out,size_t len,
 153                         const AES_KEY *key1, const AES_KEY *key2,
 154                         const unsigned char iv[16]);
 155 void AES_xts_decrypt(const char *inp,char *out,size_t len,
 156                         const AES_KEY *key1, const AES_KEY *key2,
 157                         const unsigned char iv[16]);
 158 #endif
 159
 160 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 161         ((defined(__i386)       || defined(__i386__)    || \
 162           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 163         defined(__x86_64)       || defined(__x86_64__)  || \
 164         defined(_M_AMD64)       || defined(_M_X64)      || \
 165         defined(__INTEL__)                              )
 166
 167 extern unsigned int OPENSSL_ia32cap_P[2];
 168
 169 #ifdef VPAES_ASM
 170 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 171 #endif
 172 #ifdef BSAES_ASM
 173 #define BSAES_CAPABLE   VPAES_CAPABLE
 174 #endif
 175 /*
 176  * AES-NI section
 177  */
 178 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 179
 180 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 181                         AES_KEY *key);
 182 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 183                         AES_KEY *key);
 184
 185 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 186                         const AES_KEY *key);
 187 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 188                         const AES_KEY *key);
 189
 190 void aesni_ecb_encrypt(const unsigned char *in,
 191                         unsigned char *out,
 192                         size_t length,
 193                         const AES_KEY *key,
 194                         int enc);
 195 void aesni_cbc_encrypt(const unsigned char *in,
 196                         unsigned char *out,
 197                         size_t length,
 198                         const AES_KEY *key,
 199                         unsigned char *ivec, int enc);
 200
 201 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 202                         unsigned char *out,
 203                         size_t blocks,
 204                         const void *key,
 205                         const unsigned char *ivec);
 206
 207 void aesni_xts_encrypt(const unsigned char *in,
 208                         unsigned char *out,
 209                         size_t length,
 210                         const AES_KEY *key1, const AES_KEY *key2,
 211                         const unsigned char iv[16]);
 212
 213 void aesni_xts_decrypt(const unsigned char *in,
 214                         unsigned char *out,
 215                         size_t length,
 216                         const AES_KEY *key1, const AES_KEY *key2,
 217                         const unsigned char iv[16]);
 218
 219 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 220                         unsigned char *out,
 221                         size_t blocks,
 222                         const void *key,
 223                         const unsigned char ivec[16],
 224                         unsigned char cmac[16]);
 225
 226 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 227                         unsigned char *out,
 228                         size_t blocks,
 229                         const void *key,
 230                         const unsigned char ivec[16],
 231                         unsigned char cmac[16]);
 232
 233 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 234                    const unsigned char *iv, int enc)
 235         {
 236         int ret, mode;
 237         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 238
 239         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 240         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 241             && !enc)
 242                 {
 243                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 244                 dat->block      = (block128_f)aesni_decrypt;
 245                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 246                                         (cbc128_f)aesni_cbc_encrypt :
 247                                         NULL;
 248                 }
 249         else    {
 250                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 251                 dat->block      = (block128_f)aesni_encrypt;
 252                 if (mode==EVP_CIPH_CBC_MODE)
 253                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 254                 else if (mode==EVP_CIPH_CTR_MODE)
 255                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 256                 else
 257                         dat->stream.cbc = NULL;
 258                 }
 259
 260         if(ret < 0)
 261                 {
 262                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 263                 return 0;
 264                 }
 265
 266         return 1;
 267         }
 268
 269 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 270         const unsigned char *in, size_t len)
 271 {
 272         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 273
 274         return 1;
 275 }
 276
 277 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 278         const unsigned char *in, size_t len)
 279 {
 280         size_t  bl = ctx->cipher->block_size;
 281
 282         if (len<bl)     return 1;
 283
 284         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 285
 286         return 1;
 287 }
 288
 289 #define aesni_ofb_cipher aes_ofb_cipher
 290 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 291         const unsigned char *in,size_t len);
 292
 293 #define aesni_cfb_cipher aes_cfb_cipher
 294 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 295         const unsigned char *in,size_t len);
 296
 297 #define aesni_cfb8_cipher aes_cfb8_cipher
 298 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 299         const unsigned char *in,size_t len);
 300
 301 #define aesni_cfb1_cipher aes_cfb1_cipher
 302 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 303         const unsigned char *in,size_t len);
 304
 305 #define aesni_ctr_cipher aes_ctr_cipher
 306 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 307                 const unsigned char *in, size_t len);
 308
 309 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 310                         const unsigned char *iv, int enc)
 311         {
 312         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 313         if (!iv && !key)
 314                 return 1;
 315         if (key)
 316                 {
 317                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 318                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 319                                 (block128_f)aesni_encrypt);
 320                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 321                 /* If we have an iv can set it directly, otherwise use
 322                  * saved IV.
 323                  */
 324                 if (iv == NULL && gctx->iv_set)
 325                         iv = gctx->iv;
 326                 if (iv)
 327                         {
 328                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 329                         gctx->iv_set = 1;
 330                         }
 331                 gctx->key_set = 1;
 332                 }
 333         else
 334                 {
 335                 /* If key set use IV, otherwise copy */
 336                 if (gctx->key_set)
 337                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 338                 else
 339                         memcpy(gctx->iv, iv, gctx->ivlen);
 340                 gctx->iv_set = 1;
 341                 gctx->iv_gen = 0;
 342                 }
 343         return 1;
 344         }
 345
 346 #define aesni_gcm_cipher aes_gcm_cipher
 347 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 348                 const unsigned char *in, size_t len);
 349
 350 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 351                         const unsigned char *iv, int enc)
 352         {
 353         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 354         if (!iv && !key)
 355                 return 1;
 356
 357         if (key)
 358                 {
 359                 /* key_len is two AES keys */
 360                 if (enc)
 361                         {
 362                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 363                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 364                         xctx->stream = aesni_xts_encrypt;
 365                         }
 366                 else
 367                         {
 368                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 369                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 370                         xctx->stream = aesni_xts_decrypt;
 371                         }
 372
 373                 aesni_set_encrypt_key(key + ctx->key_len/2,
 374                                                 ctx->key_len * 4, &xctx->ks2);
 375                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 376
 377                 xctx->xts.key1 = &xctx->ks1;
 378                 }
 379
 380         if (iv)
 381                 {
 382                 xctx->xts.key2 = &xctx->ks2;
 383                 memcpy(ctx->iv, iv, 16);
 384                 }
 385
 386         return 1;
 387         }
 388
 389 #define aesni_xts_cipher aes_xts_cipher
 390 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 391                 const unsigned char *in, size_t len);
 392
 393 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 394                         const unsigned char *iv, int enc)
 395         {
 396         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 397         if (!iv && !key)
 398                 return 1;
 399         if (key)
 400                 {
 401                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
 402                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 403                                         &cctx->ks, (block128_f)aesni_encrypt);
 404                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 405                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 406                 cctx->key_set = 1;
 407                 }
 408         if (iv)
 409                 {
 410                 memcpy(ctx->iv, iv, 15 - cctx->L);
 411                 cctx->iv_set = 1;
 412                 }
 413         return 1;
 414         }
 415
 416 #define aesni_ccm_cipher aes_ccm_cipher
 417 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 418                 const unsigned char *in, size_t len);
 419
 420 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 421 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 422         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 423         flags|EVP_CIPH_##MODE##_MODE,   \
 424         aesni_init_key,                 \
 425         aesni_##mode##_cipher,          \
 426         NULL,                           \
 427         sizeof(EVP_AES_KEY),            \
 428         NULL,NULL,NULL,NULL }; \
 429 static const EVP_CIPHER aes_##keylen##_##mode = { \
 430         nid##_##keylen##_##nmode,blocksize,     \
 431         keylen/8,ivlen, \
 432         flags|EVP_CIPH_##MODE##_MODE,   \
 433         aes_init_key,                   \
 434         aes_##mode##_cipher,            \
 435         NULL,                           \
 436         sizeof(EVP_AES_KEY),            \
 437         NULL,NULL,NULL,NULL }; \
 438 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 439 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 440
 441 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 442 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 443         nid##_##keylen##_##mode,blocksize, \
 444         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 445         flags|EVP_CIPH_##MODE##_MODE,   \
 446         aesni_##mode##_init_key,        \
 447         aesni_##mode##_cipher,          \
 448         aes_##mode##_cleanup,           \
 449         sizeof(EVP_AES_##MODE##_CTX),   \
 450         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 451 static const EVP_CIPHER aes_##keylen##_##mode = { \
 452         nid##_##keylen##_##mode,blocksize, \
 453         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 454         flags|EVP_CIPH_##MODE##_MODE,   \
 455         aes_##mode##_init_key,          \
 456         aes_##mode##_cipher,            \
 457         aes_##mode##_cleanup,           \
 458         sizeof(EVP_AES_##MODE##_CTX),   \
 459         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 460 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 461 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 462
 463 #else
 464
 465 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 466 static const EVP_CIPHER aes_##keylen##_##mode = { \
 467         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 468         flags|EVP_CIPH_##MODE##_MODE,   \
 469         aes_init_key,                   \
 470         aes_##mode##_cipher,            \
 471         NULL,                           \
 472         sizeof(EVP_AES_KEY),            \
 473         NULL,NULL,NULL,NULL }; \
 474 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 475 { return &aes_##keylen##_##mode; }
 476
 477 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 478 static const EVP_CIPHER aes_##keylen##_##mode = { \
 479         nid##_##keylen##_##mode,blocksize, \
 480         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 481         flags|EVP_CIPH_##MODE##_MODE,   \
 482         aes_##mode##_init_key,          \
 483         aes_##mode##_cipher,            \
 484         aes_##mode##_cleanup,           \
 485         sizeof(EVP_AES_##MODE##_CTX),   \
 486         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 487 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 488 { return &aes_##keylen##_##mode; }
 489 #endif
 490
 491 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 492         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 493         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 494         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 495         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 496         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 497         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 498         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 499
 500 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 501                    const unsigned char *iv, int enc)
 502         {
 503         int ret, mode;
 504         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 505
 506         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 507         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 508             && !enc)
 509 #ifdef BSAES_CAPABLE
 510             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 511                 {
 512                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 513                 dat->block      = (block128_f)AES_decrypt;
 514                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 515                 }
 516             else
 517 #endif
 518 #ifdef VPAES_CAPABLE
 519             if (VPAES_CAPABLE)
 520                 {
 521                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 522                 dat->block      = (block128_f)vpaes_decrypt;
 523                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 524                                         (cbc128_f)vpaes_cbc_encrypt :
 525                                         NULL;
 526                 }
 527             else
 528 #endif
 529                 {
 530                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 531                 dat->block      = (block128_f)AES_decrypt;
 532                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 533                                         (cbc128_f)AES_cbc_encrypt :
 534                                         NULL;
 535                 }
 536         else
 537 #ifdef BSAES_CAPABLE
 538             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 539                 {
 540                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 541                 dat->block      = (block128_f)AES_encrypt;
 542                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 543                 }
 544             else
 545 #endif
 546 #ifdef VPAES_CAPABLE
 547             if (VPAES_CAPABLE)
 548                 {
 549                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 550                 dat->block      = (block128_f)vpaes_encrypt;
 551                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 552                                         (cbc128_f)vpaes_cbc_encrypt :
 553                                         NULL;
 554                 }
 555             else
 556 #endif
 557                 {
 558                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 559                 dat->block      = (block128_f)AES_encrypt;
 560                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 561                                         (cbc128_f)AES_cbc_encrypt :
 562                                         NULL;
 563 #ifdef AES_CTR_ASM
 564                 if (mode==EVP_CIPH_CTR_MODE)
 565                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 566 #endif
 567                 }
 568
 569         if(ret < 0)
 570                 {
 571                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 572                 return 0;
 573                 }
 574
 575         return 1;
 576         }
 577
 578 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 579         const unsigned char *in, size_t len)
 580 {
 581         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 582
 583         if (dat->stream.cbc)
 584                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 585         else if (ctx->encrypt)
 586                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 587         else
 588                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 589
 590         return 1;
 591 }
 592
 593 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 594         const unsigned char *in, size_t len)
 595 {
 596         size_t  bl = ctx->cipher->block_size;
 597         size_t  i;
 598         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 599
 600         if (len<bl)     return 1;
 601
 602         for (i=0,len-=bl;i<=len;i+=bl)
 603                 (*dat->block)(in+i,out+i,&dat->ks);
 604
 605         return 1;
 606 }
 607
 608 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 609         const unsigned char *in,size_t len)
 610 {
 611         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 612
 613         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 614                         ctx->iv,&ctx->num,dat->block);
 615         return 1;
 616 }
 617
 618 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 619         const unsigned char *in,size_t len)
 620 {
 621         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 622
 623         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
 624                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 625         return 1;
 626 }
 627
 628 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 629         const unsigned char *in,size_t len)
 630 {
 631         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 632
 633         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
 634                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 635         return 1;
 636 }
 637
 638 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 639         const unsigned char *in,size_t len)
 640 {
 641         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 642
 643         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 644                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
 645                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 646                 return 1;
 647         }
 648
 649         while (len>=MAXBITCHUNK) {
 650                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
 651                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 652                 len-=MAXBITCHUNK;
 653         }
 654         if (len)
 655                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
 656                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 657
 658         return 1;
 659 }
 660
 661 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
 662                 const unsigned char *in, size_t len)
 663 {
 664         unsigned int num = ctx->num;
 665         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 666
 667         if (dat->stream.ctr)
 668                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
 669                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
 670         else
 671                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
 672                         ctx->iv,ctx->buf,&num,dat->block);
 673         ctx->num = (size_t)num;
 674         return 1;
 675 }
 676
 677 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
 678 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
 679 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
 680
 681 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
 682         {
 683         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 684         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
 685         if (gctx->iv != c->iv)
 686                 OPENSSL_free(gctx->iv);
 687         return 1;
 688         }
 689
 690 /* increment counter (64-bit int) by 1 */
 691 static void ctr64_inc(unsigned char *counter) {
 692         int n=8;
 693         unsigned char  c;
 694
 695         do {
 696                 --n;
 697                 c = counter[n];
 698                 ++c;
 699                 counter[n] = c;
 700                 if (c) return;
 701         } while (n);
 702 }
 703
 704 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 705         {
 706         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 707         switch (type)
 708                 {
 709         case EVP_CTRL_INIT:
 710                 gctx->key_set = 0;
 711                 gctx->iv_set = 0;
 712                 gctx->ivlen = c->cipher->iv_len;
 713                 gctx->iv = c->iv;
 714                 gctx->taglen = -1;
 715                 gctx->iv_gen = 0;
 716                 gctx->tls_aad_len = -1;
 717                 return 1;
 718
 719         case EVP_CTRL_GCM_SET_IVLEN:
 720                 if (arg <= 0)
 721                         return 0;
 722 #ifdef OPENSSL_FIPSCANISTER
 723                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
 724                                                  && arg < 12)
 725                         return 0;
 726 #endif
 727                 /* Allocate memory for IV if needed */
 728                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
 729                         {
 730                         if (gctx->iv != c->iv)
 731                                 OPENSSL_free(gctx->iv);
 732                         gctx->iv = OPENSSL_malloc(arg);
 733                         if (!gctx->iv)
 734                                 return 0;
 735                         }
 736                 gctx->ivlen = arg;
 737                 return 1;
 738
 739         case EVP_CTRL_GCM_SET_TAG:
 740                 if (arg <= 0 || arg > 16 || c->encrypt)
 741                         return 0;
 742                 memcpy(c->buf, ptr, arg);
 743                 gctx->taglen = arg;
 744                 return 1;
 745
 746         case EVP_CTRL_GCM_GET_TAG:
 747                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
 748                         return 0;
 749                 memcpy(ptr, c->buf, arg);
 750                 return 1;
 751
 752         case EVP_CTRL_GCM_SET_IV_FIXED:
 753                 /* Special case: -1 length restores whole IV */
 754                 if (arg == -1)
 755                         {
 756                         memcpy(gctx->iv, ptr, gctx->ivlen);
 757                         gctx->iv_gen = 1;
 758                         return 1;
 759                         }
 760                 /* Fixed field must be at least 4 bytes and invocation field
 761                  * at least 8.
 762                  */
 763                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
 764                         return 0;
 765                 if (arg)
 766                         memcpy(gctx->iv, ptr, arg);
 767                 if (c->encrypt &&
 768                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
 769                         return 0;
 770                 gctx->iv_gen = 1;
 771                 return 1;
 772
 773         case EVP_CTRL_GCM_IV_GEN:
 774                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
 775                         return 0;
 776                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 777                 if (arg <= 0 || arg > gctx->ivlen)
 778                         arg = gctx->ivlen;
 779                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
 780                 /* Invocation field will be at least 8 bytes in size and
 781                  * so no need to check wrap around or increment more than
 782                  * last 8 bytes.
 783                  */
 784                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
 785                 gctx->iv_set = 1;
 786                 return 1;
 787
 788         case EVP_CTRL_GCM_SET_IV_INV:
 789                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
 790                         return 0;
 791                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
 792                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 793                 gctx->iv_set = 1;
 794                 return 1;
 795
 796         case EVP_CTRL_AEAD_TLS1_AAD:
 797                 /* Save the AAD for later use */
 798                 if (arg != 13)
 799                         return 0;
 800                 memcpy(c->buf, ptr, arg);
 801                 gctx->tls_aad_len = arg;
 802                         {
 803                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
 804                         /* Correct length for explicit IV */
 805                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
 806                         /* If decrypting correct for tag too */
 807                         if (!c->encrypt)
 808                                 len -= EVP_GCM_TLS_TAG_LEN;
 809                         c->buf[arg-2] = len>>8;
 810                         c->buf[arg-1] = len & 0xff;
 811                         }
 812                 /* Extra padding: tag appended to record */
 813                 return EVP_GCM_TLS_TAG_LEN;
 814
 815         default:
 816                 return -1;
 817
 818                 }
 819         }
 820
 821 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 822                         const unsigned char *iv, int enc)
 823         {
 824         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 825         if (!iv && !key)
 826                 return 1;
 827         if (key)
 828                 { do {
 829 #ifdef BSAES_CAPABLE
 830                 if (BSAES_CAPABLE)
 831                         {
 832                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 833                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 834                                         (block128_f)AES_encrypt);
 835                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 836                         break;
 837                         }
 838                 else
 839 #endif
 840 #ifdef VPAES_CAPABLE
 841                 if (VPAES_CAPABLE)
 842                         {
 843                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 844                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 845                                         (block128_f)vpaes_encrypt);
 846                         gctx->ctr = NULL;
 847                         break;
 848                         }
 849 #endif
 850                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 851                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
 852 #ifdef AES_CTR_ASM
 853                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
 854 #else
 855                 gctx->ctr = NULL;
 856 #endif
 857                 } while (0);
 858
 859                 /* If we have an iv can set it directly, otherwise use
 860                  * saved IV.
 861                  */
 862                 if (iv == NULL && gctx->iv_set)
 863                         iv = gctx->iv;
 864                 if (iv)
 865                         {
 866                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 867                         gctx->iv_set = 1;
 868                         }
 869                 gctx->key_set = 1;
 870                 }
 871         else
 872                 {
 873                 /* If key set use IV, otherwise copy */
 874                 if (gctx->key_set)
 875                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 876                 else
 877                         memcpy(gctx->iv, iv, gctx->ivlen);
 878                 gctx->iv_set = 1;
 879                 gctx->iv_gen = 0;
 880                 }
 881         return 1;
 882         }
 883
 884 /* Handle TLS GCM packet format. This consists of the last portion of the IV
 885  * followed by the payload and finally the tag. On encrypt generate IV,
 886  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
 887  * and verify tag.
 888  */
 889
 890 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 891                 const unsigned char *in, size_t len)
 892         {
 893         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 894         int rv = -1;
 895         /* Encrypt/decrypt must be performed in place */
 896         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
 897                 return -1;
 898         /* Set IV from start of buffer or generate IV and write to start
 899          * of buffer.
 900          */
 901         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
 902                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
 903                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
 904                 goto err;
 905         /* Use saved AAD */
 906         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
 907                 goto err;
 908         /* Fix buffer and length to point to payload */
 909         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 910         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 911         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 912         if (ctx->encrypt)
 913                 {
 914                 /* Encrypt payload */
 915                 if (gctx->ctr)
 916                         {
 917                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 918                                                         in, out, len,
 919                                                         gctx->ctr))
 920                                 goto err;
 921                         }
 922                 else    {
 923                         if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
 924                                 goto err;
 925                         }
 926                 out += len;
 927                 /* Finally write tag */
 928                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
 929                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 930                 }
 931         else
 932                 {
 933                 /* Decrypt */
 934                 if (gctx->ctr)
 935                         {
 936                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
 937                                                         in, out, len,
 938                                                         gctx->ctr))
 939                                 goto err;
 940                         }
 941                 else    {
 942                         if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
 943                                 goto err;
 944                         }
 945                 /* Retrieve tag */
 946                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
 947                                         EVP_GCM_TLS_TAG_LEN);
 948                 /* If tag mismatch wipe buffer */
 949                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
 950                         {
 951                         OPENSSL_cleanse(out, len);
 952                         goto err;
 953                         }
 954                 rv = len;
 955                 }
 956
 957         err:
 958         gctx->iv_set = 0;
 959         gctx->tls_aad_len = -1;
 960         return rv;
 961         }
 962
 963 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 964                 const unsigned char *in, size_t len)
 965         {
 966         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 967         /* If not set up, return error */
 968         if (!gctx->key_set)
 969                 return -1;
 970
 971         if (gctx->tls_aad_len >= 0)
 972                 return aes_gcm_tls_cipher(ctx, out, in, len);
 973
 974         if (!gctx->iv_set)
 975                 return -1;
 976         if (!ctx->encrypt && gctx->taglen < 0)
 977                 return -1;
 978         if (in)
 979                 {
 980                 if (out == NULL)
 981                         {
 982                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
 983                                 return -1;
 984                         }
 985                 else if (ctx->encrypt)
 986                         {
 987                         if (gctx->ctr)
 988                                 {
 989                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 990                                                         in, out, len,
 991                                                         gctx->ctr))
 992                                         return -1;
 993                                 }
 994                         else    {
 995                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
 996                                         return -1;
 997                                 }
 998                         }
 999                 else
1000                         {
1001                         if (gctx->ctr)
1002                                 {
1003                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1004                                                         in, out, len,
1005                                                         gctx->ctr))
1006                                         return -1;
1007                                 }
1008                         else    {
1009                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1010                                         return -1;
1011                                 }
1012                         }
1013                 return len;
1014                 }
1015         else
1016                 {
1017                 if (!ctx->encrypt)
1018                         {
1019                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1020                                         ctx->buf, gctx->taglen) != 0)
1021                                 return -1;
1022                         gctx->iv_set = 0;
1023                         return 0;
1024                         }
1025                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1026                 gctx->taglen = 16;
1027                 /* Don't reuse the IV */
1028                 gctx->iv_set = 0;
1029                 return 0;
1030                 }
1031
1032         }
1033
1034 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1035                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1036                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1037
1038 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1039                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1040 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1041                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1042 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1043                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1044
1045 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1046         {
1047         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1048         if (type != EVP_CTRL_INIT)
1049                 return -1;
1050         /* key1 and key2 are used as an indicator both key and IV are set */
1051         xctx->xts.key1 = NULL;
1052         xctx->xts.key2 = NULL;
1053         return 1;
1054         }
1055
1056 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1057                         const unsigned char *iv, int enc)
1058         {
1059         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1060         if (!iv && !key)
1061                 return 1;
1062
1063         if (key) do
1064                 {
1065 #ifdef AES_XTS_ASM
1066                 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1067 #else
1068                 xctx->stream = NULL;
1069 #endif
1070                 /* key_len is two AES keys */
1071 #ifdef BSAES_CAPABLE
1072                 if (BSAES_CAPABLE)
1073                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1074                 else
1075 #endif
1076 #ifdef VPAES_CAPABLE
1077                 if (VPAES_CAPABLE)
1078                     {
1079                     if (enc)
1080                         {
1081                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1082                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1083                         }
1084                     else
1085                         {
1086                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1087                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1088                         }
1089
1090                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1091                                                 ctx->key_len * 4, &xctx->ks2);
1092                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1093
1094                 xctx->xts.key1 = &xctx->ks1;
1095                 break;
1096                 }
1097 #endif
1098                 if (enc)
1099                         {
1100                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1101                         xctx->xts.block1 = (block128_f)AES_encrypt;
1102                         }
1103                 else
1104                         {
1105                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1106                         xctx->xts.block1 = (block128_f)AES_decrypt;
1107                         }
1108
1109                 AES_set_encrypt_key(key + ctx->key_len/2,
1110                                                 ctx->key_len * 4, &xctx->ks2);
1111                 xctx->xts.block2 = (block128_f)AES_encrypt;
1112
1113                 xctx->xts.key1 = &xctx->ks1;
1114                 } while (0);
1115
1116         if (iv)
1117                 {
1118                 xctx->xts.key2 = &xctx->ks2;
1119                 memcpy(ctx->iv, iv, 16);
1120                 }
1121
1122         return 1;
1123         }
1124
1125 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1126                 const unsigned char *in, size_t len)
1127         {
1128         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1129         if (!xctx->xts.key1 || !xctx->xts.key2)
1130                 return 0;
1131         if (!out || !in || len<AES_BLOCK_SIZE)
1132                 return 0;
1133 #ifdef OPENSSL_FIPSCANISTER
1134         /* Requirement of SP800-38E */
1135         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1136                         (len > (1UL<<20)*16))
1137                 {
1138                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1139                 return 0;
1140                 }
1141 #endif
1142         if (xctx->stream)
1143                 (*xctx->stream)(in, out, len,
1144                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1145         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1146                                                                 ctx->encrypt))
1147                 return 0;
1148         return 1;
1149         }
1150
1151 #define aes_xts_cleanup NULL
1152
1153 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1154                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1155
1156 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1157 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1158
1159 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1160         {
1161         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1162         switch (type)
1163                 {
1164         case EVP_CTRL_INIT:
1165                 cctx->key_set = 0;
1166                 cctx->iv_set = 0;
1167                 cctx->L = 8;
1168                 cctx->M = 12;
1169                 cctx->tag_set = 0;
1170                 cctx->len_set = 0;
1171                 return 1;
1172
1173         case EVP_CTRL_CCM_SET_IVLEN:
1174                 arg = 15 - arg;
1175         case EVP_CTRL_CCM_SET_L:
1176                 if (arg < 2 || arg > 8)
1177                         return 0;
1178                 cctx->L = arg;
1179                 return 1;
1180
1181         case EVP_CTRL_CCM_SET_TAG:
1182                 if ((arg & 1) || arg < 4 || arg > 16)
1183                         return 0;
1184                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1185                         return 0;
1186                 if (ptr)
1187                         {
1188                         cctx->tag_set = 1;
1189                         memcpy(c->buf, ptr, arg);
1190                         }
1191                 cctx->M = arg;
1192                 return 1;
1193
1194         case EVP_CTRL_CCM_GET_TAG:
1195                 if (!c->encrypt || !cctx->tag_set)
1196                         return 0;
1197                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1198                         return 0;
1199                 cctx->tag_set = 0;
1200                 cctx->iv_set = 0;
1201                 cctx->len_set = 0;
1202                 return 1;
1203
1204         default:
1205                 return -1;
1206
1207                 }
1208         }
1209
1210 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1211                         const unsigned char *iv, int enc)
1212         {
1213         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1214         if (!iv && !key)
1215                 return 1;
1216         if (key) do
1217                 {
1218 #ifdef VPAES_CAPABLE
1219                 if (VPAES_CAPABLE)
1220                         {
1221                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1222                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1223                                         &cctx->ks, (block128_f)vpaes_encrypt);
1224                         cctx->key_set = 1;
1225                         break;
1226                         }
1227 #endif
1228                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1229                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1230                                         &cctx->ks, (block128_f)AES_encrypt);
1231                 cctx->str = NULL;
1232                 cctx->key_set = 1;
1233                 } while (0);
1234         if (iv)
1235                 {
1236                 memcpy(ctx->iv, iv, 15 - cctx->L);
1237                 cctx->iv_set = 1;
1238                 }
1239         return 1;
1240         }
1241
1242 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1243                 const unsigned char *in, size_t len)
1244         {
1245         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1246         CCM128_CONTEXT *ccm = &cctx->ccm;
1247         /* If not set up, return error */
1248         if (!cctx->iv_set && !cctx->key_set)
1249                 return -1;
1250         if (!ctx->encrypt && !cctx->tag_set)
1251                 return -1;
1252         if (!out)
1253                 {
1254                 if (!in)
1255                         {
1256                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1257                                 return -1;
1258                         cctx->len_set = 1;
1259                         return len;
1260                         }
1261                 /* If have AAD need message length */
1262                 if (!cctx->len_set && len)
1263                         return -1;
1264                 CRYPTO_ccm128_aad(ccm, in, len);
1265                 return len;
1266                 }
1267         /* EVP_*Final() doesn't return any data */
1268         if (!in)
1269                 return 0;
1270         /* If not set length yet do it */
1271         if (!cctx->len_set)
1272                 {
1273                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1274                         return -1;
1275                 cctx->len_set = 1;
1276                 }
1277         if (ctx->encrypt)
1278                 {
1279                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1280                                                 cctx->str) :
1281                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1282                         return -1;
1283                 cctx->tag_set = 1;
1284                 return len;
1285                 }
1286         else
1287                 {
1288                 int rv = -1;
1289                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1290                                                 cctx->str) :
1291                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1292                         {
1293                         unsigned char tag[16];
1294                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1295                                 {
1296                                 if (!memcmp(tag, ctx->buf, cctx->M))
1297                                         rv = len;
1298                                 }
1299                         }
1300                 if (rv == -1)
1301                         OPENSSL_cleanse(out, len);
1302                 cctx->iv_set = 0;
1303                 cctx->tag_set = 0;
1304                 cctx->len_set = 0;
1305                 return rv;
1306                 }
1307
1308         }
1309
1310 #define aes_ccm_cleanup NULL
1311
1312 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1313 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1314 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1315
1316 #endif