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         } EVP_AES_XTS_CTX;
  93
  94 typedef struct
  95         {
  96         AES_KEY ks;             /* AES key schedule to use */
  97         int key_set;            /* Set if key initialised */
  98         int iv_set;             /* Set if an iv is set */
  99         int tag_set;            /* Set if tag is valid */
 100         int len_set;            /* Set if message length set */
 101         int L, M;               /* L and M parameters from RFC3610 */
 102         CCM128_CONTEXT ccm;
 103         } EVP_AES_CCM_CTX;
 104
 105 #define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
 106
 107 #ifdef VPAES_ASM
 108 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
 109                         AES_KEY *key);
 110 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
 111                         AES_KEY *key);
 112
 113 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
 114                         const AES_KEY *key);
 115 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
 116                         const AES_KEY *key);
 117
 118 void vpaes_cbc_encrypt(const unsigned char *in,
 119                         unsigned char *out,
 120                         size_t length,
 121                         const AES_KEY *key,
 122                         unsigned char *ivec, int enc);
 123 #endif
 124 #ifdef BSAES_ASM
 125 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
 126                         size_t len, const AES_KEY *key,
 127                         const unsigned char ivec[16]);
 128 #endif
 129 #ifdef AES_CTR_ASM
 130 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 131                         size_t blocks, const AES_KEY *key,
 132                         const unsigned char ivec[AES_BLOCK_SIZE]);
 133 #endif
 134
 135 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 136         ((defined(__i386)       || defined(__i386__)    || \
 137           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 138         defined(__x86_64)       || defined(__x86_64__)  || \
 139         defined(_M_AMD64)       || defined(_M_X64)      || \
 140         defined(__INTEL__)                              )
 141
 142 extern unsigned int OPENSSL_ia32cap_P[2];
 143
 144 #ifdef VPAES_ASM
 145 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 146 #endif
 147 #ifdef BSAES_ASM
 148 #define BSAES_CAPABLE   VPAES_CAPABLE
 149 #endif
 150 /*
 151  * AES-NI section
 152  */
 153 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 154
 155 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 156                         AES_KEY *key);
 157 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 158                         AES_KEY *key);
 159
 160 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 161                         const AES_KEY *key);
 162 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 163                         const AES_KEY *key);
 164
 165 void aesni_ecb_encrypt(const unsigned char *in,
 166                         unsigned char *out,
 167                         size_t length,
 168                         const AES_KEY *key,
 169                         int enc);
 170 void aesni_cbc_encrypt(const unsigned char *in,
 171                         unsigned char *out,
 172                         size_t length,
 173                         const AES_KEY *key,
 174                         unsigned char *ivec, int enc);
 175
 176 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 177                         unsigned char *out,
 178                         size_t blocks,
 179                         const void *key,
 180                         const unsigned char *ivec);
 181
 182 void aesni_xts_encrypt(const unsigned char *in,
 183                         unsigned char *out,
 184                         size_t length,
 185                         const AES_KEY *key1, const AES_KEY *key2,
 186                         const unsigned char iv[16]);
 187
 188 void aesni_xts_decrypt(const unsigned char *in,
 189                         unsigned char *out,
 190                         size_t length,
 191                         const AES_KEY *key1, const AES_KEY *key2,
 192                         const unsigned char iv[16]);
 193
 194 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 195                         unsigned char *out,
 196                         size_t blocks,
 197                         const void *key,
 198                         const unsigned char ivec[16],
 199                         unsigned char cmac[16]);
 200
 201 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 202                         unsigned char *out,
 203                         size_t blocks,
 204                         const void *key,
 205                         const unsigned char ivec[16],
 206                         unsigned char cmac[16]);
 207
 208 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 209                    const unsigned char *iv, int enc)
 210         {
 211         int ret, mode;
 212         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 213
 214         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 215         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 216             && !enc)
 217                 {
 218                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 219                 dat->block      = (block128_f)aesni_decrypt;
 220                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 221                                         (cbc128_f)aesni_cbc_encrypt :
 222                                         NULL;
 223                 }
 224         else    {
 225                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 226                 dat->block      = (block128_f)aesni_encrypt;
 227                 if (mode==EVP_CIPH_CBC_MODE)
 228                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 229                 else if (mode==EVP_CIPH_CTR_MODE)
 230                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 231                 else
 232                         dat->stream.cbc = NULL;
 233                 }
 234
 235         if(ret < 0)
 236                 {
 237                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 238                 return 0;
 239                 }
 240
 241         return 1;
 242         }
 243
 244 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 245         const unsigned char *in, size_t len)
 246 {
 247         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 248
 249         return 1;
 250 }
 251
 252 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 253         const unsigned char *in, size_t len)
 254 {
 255         size_t  bl = ctx->cipher->block_size;
 256
 257         if (len<bl)     return 1;
 258
 259         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 260
 261         return 1;
 262 }
 263
 264 #define aesni_ofb_cipher aes_ofb_cipher
 265 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 266         const unsigned char *in,size_t len);
 267
 268 #define aesni_cfb_cipher aes_cfb_cipher
 269 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 270         const unsigned char *in,size_t len);
 271
 272 #define aesni_cfb8_cipher aes_cfb8_cipher
 273 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 274         const unsigned char *in,size_t len);
 275
 276 #define aesni_cfb1_cipher aes_cfb1_cipher
 277 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 278         const unsigned char *in,size_t len);
 279
 280 #define aesni_ctr_cipher aes_ctr_cipher
 281 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 282                 const unsigned char *in, size_t len);
 283
 284 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 285                         const unsigned char *iv, int enc)
 286         {
 287         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 288         if (!iv && !key)
 289                 return 1;
 290         if (key)
 291                 {
 292                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 293                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 294                                 (block128_f)aesni_encrypt);
 295                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 296                 /* If we have an iv can set it directly, otherwise use
 297                  * saved IV.
 298                  */
 299                 if (iv == NULL && gctx->iv_set)
 300                         iv = gctx->iv;
 301                 if (iv)
 302                         {
 303                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 304                         gctx->iv_set = 1;
 305                         }
 306                 gctx->key_set = 1;
 307                 }
 308         else
 309                 {
 310                 /* If key set use IV, otherwise copy */
 311                 if (gctx->key_set)
 312                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 313                 else
 314                         memcpy(gctx->iv, iv, gctx->ivlen);
 315                 gctx->iv_set = 1;
 316                 gctx->iv_gen = 0;
 317                 }
 318         return 1;
 319         }
 320
 321 #define aesni_gcm_cipher aes_gcm_cipher
 322 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 323                 const unsigned char *in, size_t len);
 324
 325 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 326                         const unsigned char *iv, int enc)
 327         {
 328         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 329         if (!iv && !key)
 330                 return 1;
 331
 332         if (key)
 333                 {
 334                 /* key_len is two AES keys */
 335                 if (enc)
 336                         {
 337                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 338                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 339                         }
 340                 else
 341                         {
 342                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 343                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 344                         }
 345
 346                 aesni_set_encrypt_key(key + ctx->key_len/2,
 347                                                 ctx->key_len * 4, &xctx->ks2);
 348                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 349
 350                 xctx->xts.key1 = &xctx->ks1;
 351                 }
 352
 353         if (iv)
 354                 {
 355                 xctx->xts.key2 = &xctx->ks2;
 356                 memcpy(ctx->iv, iv, 16);
 357                 }
 358
 359         return 1;
 360         }
 361
 362 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 363                 const unsigned char *in, size_t len)
 364         {
 365         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 366         if (!xctx->xts.key1 || !xctx->xts.key2)
 367                 return -1;
 368         if (!out || !in)
 369                 return -1;
 370 #ifdef OPENSSL_FIPS
 371         /* Requirement of SP800-38E */
 372         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
 373                         (len > (1L<<20)*16))
 374                 {
 375                 EVPerr(EVP_F_AESNI_XTS_CIPHER, EVP_R_TOO_LARGE);
 376                 return -1;
 377                 }
 378 #endif
 379         if (ctx->encrypt)
 380                 aesni_xts_encrypt(in, out, len,
 381                         xctx->xts.key1, xctx->xts.key2, ctx->iv);
 382         else
 383                 aesni_xts_decrypt(in, out, len,
 384                         xctx->xts.key1, xctx->xts.key2, ctx->iv);
 385
 386         return len;
 387         }
 388
 389 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 390                         const unsigned char *iv, int enc)
 391         {
 392         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 393         if (!iv && !key)
 394                 return 1;
 395         if (key)
 396                 {
 397                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
 398                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 399                                         &cctx->ks, (block128_f)aesni_encrypt);
 400                 cctx->key_set = 1;
 401                 }
 402         if (iv)
 403                 {
 404                 memcpy(ctx->iv, iv, 15 - cctx->L);
 405                 cctx->iv_set = 1;
 406                 }
 407         return 1;
 408         }
 409
 410 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 411                 const unsigned char *in, size_t len)
 412         {
 413         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 414         CCM128_CONTEXT *ccm = &cctx->ccm;
 415         /* If not set up, return error */
 416         if (!cctx->iv_set && !cctx->key_set)
 417                 return -1;
 418         if (!ctx->encrypt && !cctx->tag_set)
 419                 return -1;
 420         if (!out)
 421                 {
 422                 if (!in)
 423                         {
 424                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
 425                                 return -1;
 426                         cctx->len_set = 1;
 427                         return len;
 428                         }
 429                 /* If have AAD need message length */
 430                 if (!cctx->len_set && len)
 431                         return -1;
 432                 CRYPTO_ccm128_aad(ccm, in, len);
 433                 return len;
 434                 }
 435         /* EVP_*Final() doesn't return any data */
 436         if (!in)
 437                 return 0;
 438         /* If not set length yet do it */
 439         if (!cctx->len_set)
 440                 {
 441                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
 442                         return -1;
 443                 cctx->len_set = 1;
 444                 }
 445         if (ctx->encrypt)
 446                 {
 447                 if (CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
 448                                 aesni_ccm64_encrypt_blocks))
 449                         return -1;
 450                 cctx->tag_set = 1;
 451                 return len;
 452                 }
 453         else
 454                 {
 455                 int rv = -1;
 456                 if (!CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
 457                                 aesni_ccm64_decrypt_blocks))
 458                         {
 459                         unsigned char tag[16];
 460                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
 461                                 {
 462                                 if (!memcmp(tag, ctx->buf, cctx->M))
 463                                         rv = len;
 464                                 }
 465                         }
 466                 if (rv == -1)
 467                         OPENSSL_cleanse(out, len);
 468                 cctx->iv_set = 0;
 469                 cctx->tag_set = 0;
 470                 cctx->len_set = 0;
 471                 return rv;
 472                 }
 473
 474         }
 475
 476 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 477 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 478         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 479         flags|EVP_CIPH_##MODE##_MODE,   \
 480         aesni_init_key,                 \
 481         aesni_##mode##_cipher,          \
 482         NULL,                           \
 483         sizeof(EVP_AES_KEY),            \
 484         NULL,NULL,NULL,NULL }; \
 485 static const EVP_CIPHER aes_##keylen##_##mode = { \
 486         nid##_##keylen##_##nmode,blocksize,     \
 487         keylen/8,ivlen, \
 488         flags|EVP_CIPH_##MODE##_MODE,   \
 489         aes_init_key,                   \
 490         aes_##mode##_cipher,            \
 491         NULL,                           \
 492         sizeof(EVP_AES_KEY),            \
 493         NULL,NULL,NULL,NULL }; \
 494 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 495 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 496
 497 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 498 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 499         nid##_##keylen##_##mode,blocksize, \
 500         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 501         flags|EVP_CIPH_##MODE##_MODE,   \
 502         aesni_##mode##_init_key,        \
 503         aesni_##mode##_cipher,          \
 504         aes_##mode##_cleanup,           \
 505         sizeof(EVP_AES_##MODE##_CTX),   \
 506         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 507 static const EVP_CIPHER aes_##keylen##_##mode = { \
 508         nid##_##keylen##_##mode,blocksize, \
 509         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 510         flags|EVP_CIPH_##MODE##_MODE,   \
 511         aes_##mode##_init_key,          \
 512         aes_##mode##_cipher,            \
 513         aes_##mode##_cleanup,           \
 514         sizeof(EVP_AES_##MODE##_CTX),   \
 515         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 516 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 517 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 518
 519 #else
 520
 521 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 522 static const EVP_CIPHER aes_##keylen##_##mode = { \
 523         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 524         flags|EVP_CIPH_##MODE##_MODE,   \
 525         aes_init_key,                   \
 526         aes_##mode##_cipher,            \
 527         NULL,                           \
 528         sizeof(EVP_AES_KEY),            \
 529         NULL,NULL,NULL,NULL }; \
 530 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 531 { return &aes_##keylen##_##mode; }
 532
 533 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 534 static const EVP_CIPHER aes_##keylen##_##mode = { \
 535         nid##_##keylen##_##mode,blocksize, \
 536         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 537         flags|EVP_CIPH_##MODE##_MODE,   \
 538         aes_##mode##_init_key,          \
 539         aes_##mode##_cipher,            \
 540         aes_##mode##_cleanup,           \
 541         sizeof(EVP_AES_##MODE##_CTX),   \
 542         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 543 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 544 { return &aes_##keylen##_##mode; }
 545 #endif
 546
 547 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 548         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 549         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 550         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 551         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 552         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 553         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 554         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 555
 556 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 557                    const unsigned char *iv, int enc)
 558         {
 559         int ret, mode;
 560         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 561
 562         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 563         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 564             && !enc)
 565 #ifdef VPAES_CAPABLE
 566             if (VPAES_CAPABLE)
 567                 {
 568                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 569                 dat->block      = (block128_f)vpaes_decrypt;
 570                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 571                                         (cbc128_f)vpaes_cbc_encrypt :
 572                                         NULL;
 573                 }
 574             else
 575 #endif
 576                 {
 577                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 578                 dat->block      = (block128_f)AES_decrypt;
 579                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 580                                         (cbc128_f)AES_cbc_encrypt :
 581                                         NULL;
 582                 }
 583         else
 584 #ifdef BSAES_CAPABLE
 585             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 586                 {
 587                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 588                 dat->block      = (block128_f)AES_encrypt;
 589                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 590                 }
 591             else
 592 #endif
 593 #ifdef VPAES_CAPABLE
 594             if (VPAES_CAPABLE)
 595                 {
 596                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 597                 dat->block      = (block128_f)vpaes_encrypt;
 598                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 599                                         (cbc128_f)vpaes_cbc_encrypt :
 600                                         NULL;
 601                 }
 602             else
 603 #endif
 604                 {
 605                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 606                 dat->block      = (block128_f)AES_encrypt;
 607                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 608                                         (cbc128_f)AES_cbc_encrypt :
 609                                         NULL;
 610 #ifdef AES_CTR_ASM
 611                 if (mode==EVP_CIPH_CTR_MODE)
 612                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 613 #endif
 614                 }
 615
 616         if(ret < 0)
 617                 {
 618                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 619                 return 0;
 620                 }
 621
 622         return 1;
 623         }
 624
 625 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 626         const unsigned char *in, size_t len)
 627 {
 628         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 629
 630         if (dat->stream.cbc)
 631                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 632         else if (ctx->encrypt)
 633                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 634         else
 635                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 636
 637         return 1;
 638 }
 639
 640 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 641         const unsigned char *in, size_t len)
 642 {
 643         size_t  bl = ctx->cipher->block_size;
 644         size_t  i;
 645         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 646
 647         if (len<bl)     return 1;
 648
 649         for (i=0,len-=bl;i<=len;i+=bl)
 650                 (*dat->block)(in+i,out+i,&dat->ks);
 651
 652         return 1;
 653 }
 654
 655 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 656         const unsigned char *in,size_t len)
 657 {
 658         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 659
 660         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 661                         ctx->iv,&ctx->num,dat->block);
 662         return 1;
 663 }
 664
 665 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 666         const unsigned char *in,size_t len)
 667 {
 668         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 669
 670         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
 671                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 672         return 1;
 673 }
 674
 675 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 676         const unsigned char *in,size_t len)
 677 {
 678         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 679
 680         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
 681                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 682         return 1;
 683 }
 684
 685 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 686         const unsigned char *in,size_t len)
 687 {
 688         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 689
 690         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 691                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
 692                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 693                 return 1;
 694         }
 695
 696         while (len>=MAXBITCHUNK) {
 697                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
 698                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 699                 len-=MAXBITCHUNK;
 700         }
 701         if (len)
 702                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
 703                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 704
 705         return 1;
 706 }
 707
 708 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
 709                 const unsigned char *in, size_t len)
 710 {
 711         unsigned int num = ctx->num;
 712         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 713
 714         if (dat->stream.ctr)
 715                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
 716                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
 717         else
 718                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
 719                         ctx->iv,ctx->buf,&num,dat->block);
 720         ctx->num = (size_t)num;
 721         return 1;
 722 }
 723
 724 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
 725 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
 726 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
 727
 728 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
 729         {
 730         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 731         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
 732         if (gctx->iv != c->iv)
 733                 OPENSSL_free(gctx->iv);
 734         return 1;
 735         }
 736
 737 /* increment counter (64-bit int) by 1 */
 738 static void ctr64_inc(unsigned char *counter) {
 739         int n=8;
 740         unsigned char  c;
 741
 742         do {
 743                 --n;
 744                 c = counter[n];
 745                 ++c;
 746                 counter[n] = c;
 747                 if (c) return;
 748         } while (n);
 749 }
 750
 751 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 752         {
 753         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 754         switch (type)
 755                 {
 756         case EVP_CTRL_INIT:
 757                 gctx->key_set = 0;
 758                 gctx->iv_set = 0;
 759                 gctx->ivlen = c->cipher->iv_len;
 760                 gctx->iv = c->iv;
 761                 gctx->taglen = -1;
 762                 gctx->iv_gen = 0;
 763                 gctx->tls_aad_len = -1;
 764                 return 1;
 765
 766         case EVP_CTRL_GCM_SET_IVLEN:
 767                 if (arg <= 0)
 768                         return 0;
 769 #ifdef OPENSSL_FIPS
 770                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
 771                                                  && arg < 12)
 772                         return 0;
 773 #endif
 774                 /* Allocate memory for IV if needed */
 775                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
 776                         {
 777                         if (gctx->iv != c->iv)
 778                                 OPENSSL_free(gctx->iv);
 779                         gctx->iv = OPENSSL_malloc(arg);
 780                         if (!gctx->iv)
 781                                 return 0;
 782                         }
 783                 gctx->ivlen = arg;
 784                 return 1;
 785
 786         case EVP_CTRL_GCM_SET_TAG:
 787                 if (arg <= 0 || arg > 16 || c->encrypt)
 788                         return 0;
 789                 memcpy(c->buf, ptr, arg);
 790                 gctx->taglen = arg;
 791                 return 1;
 792
 793         case EVP_CTRL_GCM_GET_TAG:
 794                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
 795                         return 0;
 796                 memcpy(ptr, c->buf, arg);
 797                 return 1;
 798
 799         case EVP_CTRL_GCM_SET_IV_FIXED:
 800                 /* Special case: -1 length restores whole IV */
 801                 if (arg == -1)
 802                         {
 803                         memcpy(gctx->iv, ptr, gctx->ivlen);
 804                         gctx->iv_gen = 1;
 805                         return 1;
 806                         }
 807                 /* Fixed field must be at least 4 bytes and invocation field
 808                  * at least 8.
 809                  */
 810                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
 811                         return 0;
 812                 if (arg)
 813                         memcpy(gctx->iv, ptr, arg);
 814                 if (c->encrypt &&
 815                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
 816                         return 0;
 817                 gctx->iv_gen = 1;
 818                 return 1;
 819
 820         case EVP_CTRL_GCM_IV_GEN:
 821                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
 822                         return 0;
 823                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 824                 if (arg <= 0 || arg > gctx->ivlen)
 825                         arg = gctx->ivlen;
 826                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
 827                 /* Invocation field will be at least 8 bytes in size and
 828                  * so no need to check wrap around or increment more than
 829                  * last 8 bytes.
 830                  */
 831                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
 832                 gctx->iv_set = 1;
 833                 return 1;
 834
 835         case EVP_CTRL_GCM_SET_IV_INV:
 836                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
 837                         return 0;
 838                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
 839                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 840                 gctx->iv_set = 1;
 841                 return 1;
 842
 843         case EVP_CTRL_AEAD_TLS1_AAD:
 844                 /* Save the AAD for later use */
 845                 if (arg != 13)
 846                         return 0;
 847                 memcpy(c->buf, ptr, arg);
 848                 gctx->tls_aad_len = arg;
 849                         {
 850                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
 851                         /* Correct length for explicit IV */
 852                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
 853                         /* If decrypting correct for tag too */
 854                         if (!c->encrypt)
 855                                 len -= EVP_GCM_TLS_TAG_LEN;
 856                         c->buf[arg-2] = len>>8;
 857                         c->buf[arg-1] = len & 0xff;
 858                         }
 859                 /* Extra padding: tag appended to record */
 860                 return EVP_GCM_TLS_TAG_LEN;
 861
 862         default:
 863                 return -1;
 864
 865                 }
 866         }
 867
 868 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 869                         const unsigned char *iv, int enc)
 870         {
 871         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 872         if (!iv && !key)
 873                 return 1;
 874         if (key)
 875                 { do {
 876 #ifdef BSAES_CAPABLE
 877                 if (BSAES_CAPABLE)
 878                         {
 879                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 880                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 881                                         (block128_f)AES_encrypt);
 882                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 883                         break;
 884                         }
 885                 else
 886 #endif
 887 #ifdef VPAES_CAPABLE
 888                 if (VPAES_CAPABLE)
 889                         {
 890                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 891                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 892                                         (block128_f)vpaes_encrypt);
 893                         gctx->ctr = NULL;
 894                         break;
 895                         }
 896 #endif
 897                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 898                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
 899 #ifdef AES_CTR_ASM
 900                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
 901 #else
 902                 gctx->ctr = NULL;
 903 #endif
 904                 } while (0);
 905
 906                 /* If we have an iv can set it directly, otherwise use
 907                  * saved IV.
 908                  */
 909                 if (iv == NULL && gctx->iv_set)
 910                         iv = gctx->iv;
 911                 if (iv)
 912                         {
 913                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 914                         gctx->iv_set = 1;
 915                         }
 916                 gctx->key_set = 1;
 917                 }
 918         else
 919                 {
 920                 /* If key set use IV, otherwise copy */
 921                 if (gctx->key_set)
 922                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 923                 else
 924                         memcpy(gctx->iv, iv, gctx->ivlen);
 925                 gctx->iv_set = 1;
 926                 gctx->iv_gen = 0;
 927                 }
 928         return 1;
 929         }
 930
 931 /* Handle TLS GCM packet format. This consists of the last portion of the IV
 932  * followed by the payload and finally the tag. On encrypt generate IV,
 933  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
 934  * and verify tag.
 935  */
 936
 937 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 938                 const unsigned char *in, size_t len)
 939         {
 940         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 941         int rv = -1;
 942         /* Encrypt/decrypt must be performed in place */
 943         if (out != in)
 944                 return -1;
 945         /* Set IV from start of buffer or generate IV and write to start
 946          * of buffer.
 947          */
 948         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
 949                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
 950                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
 951                 goto err;
 952         /* Use saved AAD */
 953         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
 954                 goto err;
 955         /* Fix buffer and length to point to payload */
 956         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 957         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 958         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 959         if (ctx->encrypt)
 960                 {
 961                 /* Encrypt payload */
 962                 if (gctx->ctr)
 963                         {
 964                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 965                                                         in, out, len,
 966                                                         gctx->ctr))
 967                                 goto err;
 968                         }
 969                 else    {
 970                         if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
 971                                 goto err;
 972                         }
 973                 out += len;
 974                 /* Finally write tag */
 975                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
 976                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 977                 }
 978         else
 979                 {
 980                 /* Decrypt */
 981                 if (gctx->ctr)
 982                         {
 983                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
 984                                                         in, out, len,
 985                                                         gctx->ctr))
 986                                 goto err;
 987                         }
 988                 else    {
 989                         if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
 990                                 goto err;
 991                         }
 992                 /* Retrieve tag */
 993                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
 994                                         EVP_GCM_TLS_TAG_LEN);
 995                 /* If tag mismatch wipe buffer */
 996                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
 997                         {
 998                         OPENSSL_cleanse(out, len);
 999                         goto err;
1000                         }
1001                 rv = len;
1002                 }
1003
1004         err:
1005         gctx->iv_set = 0;
1006         gctx->tls_aad_len = -1;
1007         return rv;
1008         }
1009
1010 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1011                 const unsigned char *in, size_t len)
1012         {
1013         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1014         /* If not set up, return error */
1015         if (!gctx->key_set)
1016                 return -1;
1017
1018         if (gctx->tls_aad_len >= 0)
1019                 return aes_gcm_tls_cipher(ctx, out, in, len);
1020
1021         if (!gctx->iv_set)
1022                 return -1;
1023         if (!ctx->encrypt && gctx->taglen < 0)
1024                 return -1;
1025         if (in)
1026                 {
1027                 if (out == NULL)
1028                         {
1029                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1030                                 return -1;
1031                         }
1032                 else if (ctx->encrypt)
1033                         {
1034                         if (gctx->ctr)
1035                                 {
1036                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1037                                                         in, out, len,
1038                                                         gctx->ctr))
1039                                         return -1;
1040                                 }
1041                         else    {
1042                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1043                                         return -1;
1044                                 }
1045                         }
1046                 else
1047                         {
1048                         if (gctx->ctr)
1049                                 {
1050                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1051                                                         in, out, len,
1052                                                         gctx->ctr))
1053                                         return -1;
1054                                 }
1055                         else    {
1056                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1057                                         return -1;
1058                                 }
1059                         }
1060                 return len;
1061                 }
1062         else
1063                 {
1064                 if (!ctx->encrypt)
1065                         {
1066                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1067                                         ctx->buf, gctx->taglen) != 0)
1068                                 return -1;
1069                         gctx->iv_set = 0;
1070                         return 0;
1071                         }
1072                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1073                 gctx->taglen = 16;
1074                 /* Don't reuse the IV */
1075                 gctx->iv_set = 0;
1076                 return 0;
1077                 }
1078
1079         }
1080
1081 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1082                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1083                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1084
1085 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1086                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1087 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1088                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1089 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1090                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1091
1092 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1093         {
1094         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1095         if (type != EVP_CTRL_INIT)
1096                 return -1;
1097         /* key1 and key2 are used as an indicator both key and IV are set */
1098         xctx->xts.key1 = NULL;
1099         xctx->xts.key2 = NULL;
1100         return 1;
1101         }
1102
1103 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1104                         const unsigned char *iv, int enc)
1105         {
1106         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1107         if (!iv && !key)
1108                 return 1;
1109
1110         if (key) do
1111                 {
1112                 /* key_len is two AES keys */
1113 #ifdef VPAES_CAPABLE
1114                 if (VPAES_CAPABLE)
1115                     {
1116                     if (enc)
1117                         {
1118                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1119                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1120                         }
1121                     else
1122                         {
1123                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1124                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1125                         }
1126
1127                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1128                                                 ctx->key_len * 4, &xctx->ks2);
1129                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1130
1131                 xctx->xts.key1 = &xctx->ks1;
1132                 break;
1133                 }
1134 #endif
1135                 if (enc)
1136                         {
1137                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1138                         xctx->xts.block1 = (block128_f)AES_encrypt;
1139                         }
1140                 else
1141                         {
1142                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1143                         xctx->xts.block1 = (block128_f)AES_decrypt;
1144                         }
1145
1146                 AES_set_encrypt_key(key + ctx->key_len/2,
1147                                                 ctx->key_len * 4, &xctx->ks2);
1148                 xctx->xts.block2 = (block128_f)AES_encrypt;
1149
1150                 xctx->xts.key1 = &xctx->ks1;
1151                 } while (0);
1152
1153         if (iv)
1154                 {
1155                 xctx->xts.key2 = &xctx->ks2;
1156                 memcpy(ctx->iv, iv, 16);
1157                 }
1158
1159         return 1;
1160         }
1161
1162 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1163                 const unsigned char *in, size_t len)
1164         {
1165         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1166         if (!xctx->xts.key1 || !xctx->xts.key2)
1167                 return -1;
1168         if (!out || !in)
1169                 return -1;
1170 #ifdef OPENSSL_FIPS
1171         /* Requirement of SP800-38E */
1172         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1173                         (len > (1L<<20)*16))
1174                 {
1175                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1176                 return -1;
1177                 }
1178 #endif
1179         if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1180                                                                 ctx->encrypt))
1181                 return -1;
1182         return len;
1183         }
1184
1185 #define aes_xts_cleanup NULL
1186
1187 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1188 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1189
1190 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1191         {
1192         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1193         switch (type)
1194                 {
1195         case EVP_CTRL_INIT:
1196                 cctx->key_set = 0;
1197                 cctx->iv_set = 0;
1198                 cctx->L = 8;
1199                 cctx->M = 12;
1200                 cctx->tag_set = 0;
1201                 cctx->len_set = 0;
1202                 return 1;
1203
1204         case EVP_CTRL_CCM_SET_IVLEN:
1205                 arg = 15 - arg;
1206         case EVP_CTRL_CCM_SET_L:
1207                 if (arg < 2 || arg > 8)
1208                         return 0;
1209                 cctx->L = arg;
1210                 return 1;
1211
1212         case EVP_CTRL_CCM_SET_TAG:
1213                 if ((arg & 1) || arg < 4 || arg > 16)
1214                         return 0;
1215                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1216                         return 0;
1217                 if (ptr)
1218                         {
1219                         cctx->tag_set = 1;
1220                         memcpy(c->buf, ptr, arg);
1221                         }
1222                 cctx->M = arg;
1223                 return 1;
1224
1225         case EVP_CTRL_CCM_GET_TAG:
1226                 if (!c->encrypt || !cctx->tag_set)
1227                         return 0;
1228                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1229                         return 0;
1230                 cctx->tag_set = 0;
1231                 cctx->iv_set = 0;
1232                 cctx->len_set = 0;
1233                 return 1;
1234
1235         default:
1236                 return -1;
1237
1238                 }
1239         }
1240
1241 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1242                         const unsigned char *iv, int enc)
1243         {
1244         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1245         if (!iv && !key)
1246                 return 1;
1247         if (key) do
1248                 {
1249 #ifdef VPAES_CAPABLE
1250                 if (VPAES_CAPABLE)
1251                         {
1252                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1253                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1254                                         &cctx->ks, (block128_f)vpaes_encrypt);
1255                         cctx->key_set = 1;
1256                         break;
1257                         }
1258 #endif
1259                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1260                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1261                                         &cctx->ks, (block128_f)AES_encrypt);
1262                 cctx->key_set = 1;
1263                 } while (0);
1264         if (iv)
1265                 {
1266                 memcpy(ctx->iv, iv, 15 - cctx->L);
1267                 cctx->iv_set = 1;
1268                 }
1269         return 1;
1270         }
1271
1272 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1273                 const unsigned char *in, size_t len)
1274         {
1275         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1276         CCM128_CONTEXT *ccm = &cctx->ccm;
1277         /* If not set up, return error */
1278         if (!cctx->iv_set && !cctx->key_set)
1279                 return -1;
1280         if (!ctx->encrypt && !cctx->tag_set)
1281                 return -1;
1282         if (!out)
1283                 {
1284                 if (!in)
1285                         {
1286                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1287                                 return -1;
1288                         cctx->len_set = 1;
1289                         return len;
1290                         }
1291                 /* If have AAD need message length */
1292                 if (!cctx->len_set && len)
1293                         return -1;
1294                 CRYPTO_ccm128_aad(ccm, in, len);
1295                 return len;
1296                 }
1297         /* EVP_*Final() doesn't return any data */
1298         if (!in)
1299                 return 0;
1300         /* If not set length yet do it */
1301         if (!cctx->len_set)
1302                 {
1303                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1304                         return -1;
1305                 cctx->len_set = 1;
1306                 }
1307         if (ctx->encrypt)
1308                 {
1309                 if (CRYPTO_ccm128_encrypt(ccm, in, out, len))
1310                         return -1;
1311                 cctx->tag_set = 1;
1312                 return len;
1313                 }
1314         else
1315                 {
1316                 int rv = -1;
1317                 if (!CRYPTO_ccm128_decrypt(ccm, in, out, len))
1318                         {
1319                         unsigned char tag[16];
1320                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1321                                 {
1322                                 if (!memcmp(tag, ctx->buf, cctx->M))
1323                                         rv = len;
1324                                 }
1325                         }
1326                 if (rv == -1)
1327                         OPENSSL_cleanse(out, len);
1328                 cctx->iv_set = 0;
1329                 cctx->tag_set = 0;
1330                 cctx->len_set = 0;
1331                 return rv;
1332                 }
1333
1334         }
1335
1336 #define aes_ccm_cleanup NULL
1337
1338 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1339 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1340 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1341
1342 #endif