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         void (*block)(const unsigned char *in, unsigned char *out,
  68                         const AES_KEY *key);
  69         void (*cbc)(const unsigned char *in,
  70                         unsigned char *out,
  71                         size_t length,
  72                         const AES_KEY *key,
  73                         unsigned char *ivec, int enc);
  74
  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         } EVP_AES_GCM_CTX;
  89
  90 typedef struct
  91         {
  92         AES_KEY ks1, ks2;       /* AES key schedules to use */
  93         XTS128_CONTEXT xts;
  94         } EVP_AES_XTS_CTX;
  95
  96 typedef struct
  97         {
  98         AES_KEY ks;             /* AES key schedule to use */
  99         int key_set;            /* Set if key initialised */
 100         int iv_set;             /* Set if an iv is set */
 101         int tag_set;            /* Set if tag is valid */
 102         int len_set;            /* Set if message length set */
 103         int L, M;               /* L and M parameters from RFC3610 */
 104         CCM128_CONTEXT ccm;
 105         } EVP_AES_CCM_CTX;
 106
 107 #define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
 108
 109 #ifdef VPAES_ASM
 110 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
 111                         AES_KEY *key);
 112 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
 113                         AES_KEY *key);
 114
 115 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
 116                         const AES_KEY *key);
 117 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
 118                         const AES_KEY *key);
 119
 120 void vpaes_cbc_encrypt(const unsigned char *in,
 121                         unsigned char *out,
 122                         size_t length,
 123                         const AES_KEY *key,
 124                         unsigned char *ivec, int enc);
 125 #endif
 126
 127 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 128         ((defined(__i386)       || defined(__i386__)    || \
 129           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 130         defined(__x86_64)       || defined(__x86_64__)  || \
 131         defined(_M_AMD64)       || defined(_M_X64)      || \
 132         defined(__INTEL__)                              )
 133
 134 extern unsigned int OPENSSL_ia32cap_P[2];
 135
 136 #ifdef VPAES_ASM
 137 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 138 #endif
 139 /*
 140  * AES-NI section
 141  */
 142 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 143
 144 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 145                         AES_KEY *key);
 146 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 147                         AES_KEY *key);
 148
 149 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 150                         const AES_KEY *key);
 151 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 152                         const AES_KEY *key);
 153
 154 void aesni_ecb_encrypt(const unsigned char *in,
 155                         unsigned char *out,
 156                         size_t length,
 157                         const AES_KEY *key,
 158                         int enc);
 159 void aesni_cbc_encrypt(const unsigned char *in,
 160                         unsigned char *out,
 161                         size_t length,
 162                         const AES_KEY *key,
 163                         unsigned char *ivec, int enc);
 164
 165 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 166                         unsigned char *out,
 167                         size_t blocks,
 168                         const void *key,
 169                         const unsigned char *ivec);
 170
 171 void aesni_xts_encrypt(const unsigned char *in,
 172                         unsigned char *out,
 173                         size_t length,
 174                         const AES_KEY *key1, const AES_KEY *key2,
 175                         const unsigned char iv[16]);
 176
 177 void aesni_xts_decrypt(const unsigned char *in,
 178                         unsigned char *out,
 179                         size_t length,
 180                         const AES_KEY *key1, const AES_KEY *key2,
 181                         const unsigned char iv[16]);
 182
 183 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 184                         unsigned char *out,
 185                         size_t blocks,
 186                         const void *key,
 187                         const unsigned char ivec[16],
 188                         unsigned char cmac[16]);
 189
 190 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 191                         unsigned char *out,
 192                         size_t blocks,
 193                         const void *key,
 194                         const unsigned char ivec[16],
 195                         unsigned char cmac[16]);
 196
 197 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 198                    const unsigned char *iv, int enc)
 199         {
 200         int ret;
 201
 202         if (((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_ECB_MODE
 203             || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CBC_MODE)
 204             && !enc)
 205                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 206         else
 207                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 208
 209         if(ret < 0)
 210                 {
 211                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 212                 return 0;
 213                 }
 214
 215         return 1;
 216         }
 217
 218 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 219         const unsigned char *in, size_t len)
 220 {
 221         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 222
 223         return 1;
 224 }
 225
 226 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 227         const unsigned char *in, size_t len)
 228 {
 229         size_t  bl = ctx->cipher->block_size;
 230
 231         if (len<bl)     return 1;
 232
 233         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 234
 235         return 1;
 236 }
 237
 238 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 239         const unsigned char *in,size_t len)
 240 {
 241         CRYPTO_ofb128_encrypt(in,out,len,ctx->cipher_data,
 242                         ctx->iv,&ctx->num,
 243                         (block128_f)aesni_encrypt);
 244         return 1;
 245 }
 246
 247 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 248         const unsigned char *in,size_t len)
 249 {
 250         CRYPTO_cfb128_encrypt(in,out,len,ctx->cipher_data,
 251                         ctx->iv,&ctx->num,ctx->encrypt,
 252                         (block128_f)aesni_encrypt);
 253         return 1;
 254 }
 255
 256 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 257         const unsigned char *in,size_t len)
 258 {
 259         CRYPTO_cfb128_8_encrypt(in,out,len,ctx->cipher_data,
 260                         ctx->iv,&ctx->num,ctx->encrypt,
 261                         (block128_f)aesni_encrypt);
 262         return 1;
 263 }
 264
 265 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 266         const unsigned char *in,size_t len)
 267 {
 268         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 269                 CRYPTO_cfb128_1_encrypt(in,out,len,ctx->cipher_data,
 270                         ctx->iv,&ctx->num,ctx->encrypt,
 271                         (block128_f)aesni_encrypt);
 272                 return 1;
 273         }
 274
 275         while (len>=MAXBITCHUNK) {
 276                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,ctx->cipher_data,
 277                         ctx->iv,&ctx->num,ctx->encrypt,
 278                         (block128_f)aesni_encrypt);
 279                 len-=MAXBITCHUNK;
 280         }
 281         if (len)
 282                 CRYPTO_cfb128_1_encrypt(in,out,len*8,ctx->cipher_data,
 283                         ctx->iv,&ctx->num,ctx->encrypt,
 284                         (block128_f)aesni_encrypt);
 285
 286         return 1;
 287 }
 288
 289 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 290                 const unsigned char *in, size_t len)
 291 {
 292         unsigned int num;
 293         num = ctx->num;
 294
 295         CRYPTO_ctr128_encrypt_ctr32(in,out,len,
 296                         ctx->cipher_data,ctx->iv,ctx->buf,&num,
 297                         (ctr128_f)aesni_ctr32_encrypt_blocks);
 298
 299         ctx->num = (size_t)num;
 300         return 1;
 301 }
 302
 303 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 304                         const unsigned char *iv, int enc)
 305         {
 306         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 307         if (!iv && !key)
 308                 return 1;
 309         if (key)
 310                 {
 311                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 312                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 313                                 (block128_f)aesni_encrypt);
 314                 /* If we have an iv can set it directly, otherwise use
 315                  * saved IV.
 316                  */
 317                 if (iv == NULL && gctx->iv_set)
 318                         iv = gctx->iv;
 319                 if (iv)
 320                         {
 321                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 322                         gctx->iv_set = 1;
 323                         }
 324                 gctx->key_set = 1;
 325                 }
 326         else
 327                 {
 328                 /* If key set use IV, otherwise copy */
 329                 if (gctx->key_set)
 330                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 331                 else
 332                         memcpy(gctx->iv, iv, gctx->ivlen);
 333                 gctx->iv_set = 1;
 334                 gctx->iv_gen = 0;
 335                 }
 336         return 1;
 337         }
 338
 339 /* Handle TLS GCM packet format. This consists of the last portion of the IV
 340  * followed by the payload and finally the tag. On encrypt generate IV,
 341  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
 342  * and verify tag.
 343  */
 344
 345 static int aesni_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 346                 const unsigned char *in, size_t len)
 347         {
 348         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 349         int rv = -1;
 350         /* Encrypt/decrypt must be performed in place */
 351         if (out != in)
 352                 return -1;
 353         /* Set IV from start of buffer or generate IV and write to start
 354          * of buffer.
 355          */
 356         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
 357                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
 358                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
 359                 goto err;
 360         /* Use saved AAD */
 361         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
 362                 goto err;
 363         /* Fix buffer and length to point to payload */
 364         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 365         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 366         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 367         if (ctx->encrypt)
 368                 {
 369                 /* Encrypt payload */
 370                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, in, out, len,
 371                                                 aesni_ctr32_encrypt_blocks))
 372                         goto err;
 373                 out += len;
 374                 /* Finally write tag */
 375                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
 376                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 377                 }
 378         else
 379                 {
 380                 /* Decrypt */
 381                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, in, out, len,
 382                                                 aesni_ctr32_encrypt_blocks))
 383                         goto err;
 384                 /* Retrieve tag */
 385                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
 386                                         EVP_GCM_TLS_TAG_LEN);
 387                 /* If tag mismatch wipe buffer */
 388                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
 389                         {
 390                         OPENSSL_cleanse(out, len);
 391                         goto err;
 392                         }
 393                 rv = len;
 394                 }
 395
 396         err:
 397         gctx->iv_set = 0;
 398         gctx->tls_aad_len = -1;
 399         return rv;
 400         }
 401
 402 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 403                 const unsigned char *in, size_t len)
 404         {
 405         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 406         /* If not set up, return error */
 407         if (!gctx->key_set)
 408                 return -1;
 409
 410         if (gctx->tls_aad_len >= 0)
 411                 return aesni_gcm_tls_cipher(ctx, out, in, len);
 412
 413         if (!gctx->iv_set)
 414                 return -1;
 415         if (!ctx->encrypt && gctx->taglen < 0)
 416                 return -1;
 417         if (in)
 418                 {
 419                 if (out == NULL)
 420                         {
 421                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
 422                                 return -1;
 423                         }
 424                 else if (ctx->encrypt)
 425                         {
 426                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 427                                         in, out, len,
 428                                         aesni_ctr32_encrypt_blocks))
 429                                 return -1;
 430                         }
 431                 else
 432                         {
 433                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
 434                                         in, out, len,
 435                                         aesni_ctr32_encrypt_blocks))
 436                                 return -1;
 437                         }
 438                 return len;
 439                 }
 440         else
 441                 {
 442                 if (!ctx->encrypt)
 443                         {
 444                         if (CRYPTO_gcm128_finish(&gctx->gcm,
 445                                         ctx->buf, gctx->taglen) != 0)
 446                                 return -1;
 447                         gctx->iv_set = 0;
 448                         return 0;
 449                         }
 450                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
 451                 gctx->taglen = 16;
 452                 /* Don't reuse the IV */
 453                 gctx->iv_set = 0;
 454                 return 0;
 455                 }
 456
 457         }
 458
 459 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 460                         const unsigned char *iv, int enc)
 461         {
 462         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 463         if (!iv && !key)
 464                 return 1;
 465
 466         if (key)
 467                 {
 468                 /* key_len is two AES keys */
 469                 if (enc)
 470                         {
 471                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 472                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 473                         }
 474                 else
 475                         {
 476                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 477                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 478                         }
 479
 480                 aesni_set_encrypt_key(key + ctx->key_len/2,
 481                                                 ctx->key_len * 4, &xctx->ks2);
 482                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 483
 484                 xctx->xts.key1 = &xctx->ks1;
 485                 }
 486
 487         if (iv)
 488                 {
 489                 xctx->xts.key2 = &xctx->ks2;
 490                 memcpy(ctx->iv, iv, 16);
 491                 }
 492
 493         return 1;
 494         }
 495
 496 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 497                 const unsigned char *in, size_t len)
 498         {
 499         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 500         if (!xctx->xts.key1 || !xctx->xts.key2)
 501                 return -1;
 502         if (!out || !in)
 503                 return -1;
 504 #ifdef OPENSSL_FIPS
 505         /* Requirement of SP800-38E */
 506         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
 507                         (len > (1L<<20)*16))
 508                 {
 509                 EVPerr(EVP_F_AESNI_XTS_CIPHER, EVP_R_TOO_LARGE);
 510                 return -1;
 511                 }
 512 #endif
 513         if (ctx->encrypt)
 514                 aesni_xts_encrypt(in, out, len,
 515                         xctx->xts.key1, xctx->xts.key2, ctx->iv);
 516         else
 517                 aesni_xts_decrypt(in, out, len,
 518                         xctx->xts.key1, xctx->xts.key2, ctx->iv);
 519
 520         return len;
 521         }
 522
 523 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 524                         const unsigned char *iv, int enc)
 525         {
 526         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 527         if (!iv && !key)
 528                 return 1;
 529         if (key)
 530                 {
 531                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
 532                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 533                                         &cctx->ks, (block128_f)aesni_encrypt);
 534                 cctx->key_set = 1;
 535                 }
 536         if (iv)
 537                 {
 538                 memcpy(ctx->iv, iv, 15 - cctx->L);
 539                 cctx->iv_set = 1;
 540                 }
 541         return 1;
 542         }
 543
 544 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 545                 const unsigned char *in, size_t len)
 546         {
 547         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 548         CCM128_CONTEXT *ccm = &cctx->ccm;
 549         /* If not set up, return error */
 550         if (!cctx->iv_set && !cctx->key_set)
 551                 return -1;
 552         if (!ctx->encrypt && !cctx->tag_set)
 553                 return -1;
 554         if (!out)
 555                 {
 556                 if (!in)
 557                         {
 558                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
 559                                 return -1;
 560                         cctx->len_set = 1;
 561                         return len;
 562                         }
 563                 /* If have AAD need message length */
 564                 if (!cctx->len_set && len)
 565                         return -1;
 566                 CRYPTO_ccm128_aad(ccm, in, len);
 567                 return len;
 568                 }
 569         /* EVP_*Final() doesn't return any data */
 570         if (!in)
 571                 return 0;
 572         /* If not set length yet do it */
 573         if (!cctx->len_set)
 574                 {
 575                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
 576                         return -1;
 577                 cctx->len_set = 1;
 578                 }
 579         if (ctx->encrypt)
 580                 {
 581                 if (CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
 582                                 aesni_ccm64_encrypt_blocks))
 583                         return -1;
 584                 cctx->tag_set = 1;
 585                 return len;
 586                 }
 587         else
 588                 {
 589                 int rv = -1;
 590                 if (!CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
 591                                 aesni_ccm64_decrypt_blocks))
 592                         {
 593                         unsigned char tag[16];
 594                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
 595                                 {
 596                                 if (!memcmp(tag, ctx->buf, cctx->M))
 597                                         rv = len;
 598                                 }
 599                         }
 600                 if (rv == -1)
 601                         OPENSSL_cleanse(out, len);
 602                 cctx->iv_set = 0;
 603                 cctx->tag_set = 0;
 604                 cctx->len_set = 0;
 605                 return rv;
 606                 }
 607
 608         }
 609
 610 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 611 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 612         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 613         flags|EVP_CIPH_##MODE##_MODE,   \
 614         aesni_init_key,                 \
 615         aesni_##mode##_cipher,          \
 616         NULL,                           \
 617         sizeof(EVP_AES_KEY),            \
 618         NULL,NULL,NULL,NULL }; \
 619 static const EVP_CIPHER aes_##keylen##_##mode = { \
 620         nid##_##keylen##_##nmode,blocksize,     \
 621         keylen/8,ivlen, \
 622         flags|EVP_CIPH_##MODE##_MODE,   \
 623         aes_init_key,                   \
 624         aes_##mode##_cipher,            \
 625         NULL,                           \
 626         sizeof(EVP_AES_KEY),            \
 627         NULL,NULL,NULL,NULL }; \
 628 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 629 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 630
 631 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 632 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 633         nid##_##keylen##_##mode,blocksize, \
 634         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 635         flags|EVP_CIPH_##MODE##_MODE,   \
 636         aesni_##mode##_init_key,        \
 637         aesni_##mode##_cipher,          \
 638         aes_##mode##_cleanup,           \
 639         sizeof(EVP_AES_##MODE##_CTX),   \
 640         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 641 static const EVP_CIPHER aes_##keylen##_##mode = { \
 642         nid##_##keylen##_##mode,blocksize, \
 643         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 644         flags|EVP_CIPH_##MODE##_MODE,   \
 645         aes_##mode##_init_key,          \
 646         aes_##mode##_cipher,            \
 647         aes_##mode##_cleanup,           \
 648         sizeof(EVP_AES_##MODE##_CTX),   \
 649         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 650 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 651 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 652
 653 #else
 654
 655 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 656 static const EVP_CIPHER aes_##keylen##_##mode = { \
 657         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 658         flags|EVP_CIPH_##MODE##_MODE,   \
 659         aes_init_key,                   \
 660         aes_##mode##_cipher,            \
 661         NULL,                           \
 662         sizeof(EVP_AES_KEY),            \
 663         NULL,NULL,NULL,NULL }; \
 664 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 665 { return &aes_##keylen##_##mode; }
 666
 667 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 668 static const EVP_CIPHER aes_##keylen##_##mode = { \
 669         nid##_##keylen##_##mode,blocksize, \
 670         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 671         flags|EVP_CIPH_##MODE##_MODE,   \
 672         aes_##mode##_init_key,          \
 673         aes_##mode##_cipher,            \
 674         aes_##mode##_cleanup,           \
 675         sizeof(EVP_AES_##MODE##_CTX),   \
 676         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 677 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 678 { return &aes_##keylen##_##mode; }
 679 #endif
 680
 681 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 682         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 683         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 684         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 685         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 686         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 687         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 688         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 689
 690 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 691                    const unsigned char *iv, int enc)
 692         {
 693         int ret;
 694         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 695
 696         if (((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_ECB_MODE
 697             || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CBC_MODE)
 698             && !enc)
 699 #ifdef VPAES_CAPABLE
 700             if (VPAES_CAPABLE)
 701                 {
 702                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 703                 dat->block = vpaes_decrypt;
 704                 dat->cbc   = vpaes_cbc_encrypt;
 705                 }
 706             else
 707 #endif
 708                 {
 709                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 710                 dat->block = AES_decrypt;
 711                 dat->cbc   = AES_cbc_encrypt;
 712                 }
 713         else
 714 #ifdef VPAES_CAPABLE
 715             if (VPAES_CAPABLE)
 716                 {
 717                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 718                 dat->block = vpaes_encrypt;
 719                 dat->cbc   = vpaes_cbc_encrypt;
 720                 }
 721             else
 722 #endif
 723                 {
 724                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 725                 dat->block = AES_encrypt;
 726                 dat->cbc   = AES_cbc_encrypt;
 727                 }
 728
 729         if(ret < 0)
 730                 {
 731                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 732                 return 0;
 733                 }
 734
 735         return 1;
 736         }
 737
 738 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 739         const unsigned char *in, size_t len)
 740 {
 741         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 742
 743         (*dat->cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 744
 745         return 1;
 746 }
 747
 748 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 749         const unsigned char *in, size_t len)
 750 {
 751         size_t  bl = ctx->cipher->block_size;
 752         size_t  i;
 753         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 754
 755         if (len<bl)     return 1;
 756
 757         for (i=0,len-=bl;i<=len;i+=bl)
 758                 (*dat->block)(in+i,out+i,&dat->ks);
 759
 760         return 1;
 761 }
 762
 763 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 764         const unsigned char *in,size_t len)
 765 {
 766         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 767
 768         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 769                         ctx->iv,&ctx->num,
 770                         (block128_f)dat->block);
 771         return 1;
 772 }
 773
 774 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 775         const unsigned char *in,size_t len)
 776 {
 777         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 778
 779         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
 780                         ctx->iv,&ctx->num,ctx->encrypt,
 781                         (block128_f)dat->block);
 782         return 1;
 783 }
 784
 785 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 786         const unsigned char *in,size_t len)
 787 {
 788         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 789
 790         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
 791                         ctx->iv,&ctx->num,ctx->encrypt,
 792                         (block128_f)dat->block);
 793         return 1;
 794 }
 795
 796 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 797         const unsigned char *in,size_t len)
 798 {
 799         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 800
 801         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 802                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
 803                         ctx->iv,&ctx->num,ctx->encrypt,
 804                         (block128_f)dat->block);
 805                 return 1;
 806         }
 807
 808         while (len>=MAXBITCHUNK) {
 809                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
 810                         ctx->iv,&ctx->num,ctx->encrypt,
 811                         (block128_f)dat->block);
 812                 len-=MAXBITCHUNK;
 813         }
 814         if (len)
 815                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
 816                         ctx->iv,&ctx->num,ctx->encrypt,
 817                         (block128_f)dat->block);
 818
 819         return 1;
 820 }
 821
 822 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
 823                 const unsigned char *in, size_t len)
 824 {
 825         unsigned int num = ctx->num;
 826         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 827 #ifdef AES_CTR_ASM
 828         void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 829                         size_t blocks, const AES_KEY *key,
 830                         const unsigned char ivec[AES_BLOCK_SIZE]);
 831
 832         CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
 833                 ctx->iv,ctx->buf,&num,(ctr128_f)AES_ctr32_encrypt);
 834 #else
 835         CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
 836                 ctx->iv,ctx->buf,&num,(block128_f)dat->block);
 837 #endif
 838         ctx->num = (size_t)num;
 839         return 1;
 840 }
 841
 842 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
 843 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
 844 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
 845
 846 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
 847         {
 848         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 849         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
 850         if (gctx->iv != c->iv)
 851                 OPENSSL_free(gctx->iv);
 852         return 1;
 853         }
 854
 855 /* increment counter (64-bit int) by 1 */
 856 static void ctr64_inc(unsigned char *counter) {
 857         int n=8;
 858         unsigned char  c;
 859
 860         do {
 861                 --n;
 862                 c = counter[n];
 863                 ++c;
 864                 counter[n] = c;
 865                 if (c) return;
 866         } while (n);
 867 }
 868
 869 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 870         {
 871         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 872         switch (type)
 873                 {
 874         case EVP_CTRL_INIT:
 875                 gctx->key_set = 0;
 876                 gctx->iv_set = 0;
 877                 gctx->ivlen = c->cipher->iv_len;
 878                 gctx->iv = c->iv;
 879                 gctx->taglen = -1;
 880                 gctx->iv_gen = 0;
 881                 gctx->tls_aad_len = -1;
 882                 return 1;
 883
 884         case EVP_CTRL_GCM_SET_IVLEN:
 885                 if (arg <= 0)
 886                         return 0;
 887 #ifdef OPENSSL_FIPS
 888                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
 889                                                  && arg < 12)
 890                         return 0;
 891 #endif
 892                 /* Allocate memory for IV if needed */
 893                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
 894                         {
 895                         if (gctx->iv != c->iv)
 896                                 OPENSSL_free(gctx->iv);
 897                         gctx->iv = OPENSSL_malloc(arg);
 898                         if (!gctx->iv)
 899                                 return 0;
 900                         }
 901                 gctx->ivlen = arg;
 902                 return 1;
 903
 904         case EVP_CTRL_GCM_SET_TAG:
 905                 if (arg <= 0 || arg > 16 || c->encrypt)
 906                         return 0;
 907                 memcpy(c->buf, ptr, arg);
 908                 gctx->taglen = arg;
 909                 return 1;
 910
 911         case EVP_CTRL_GCM_GET_TAG:
 912                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
 913                         return 0;
 914                 memcpy(ptr, c->buf, arg);
 915                 return 1;
 916
 917         case EVP_CTRL_GCM_SET_IV_FIXED:
 918                 /* Special case: -1 length restores whole IV */
 919                 if (arg == -1)
 920                         {
 921                         memcpy(gctx->iv, ptr, gctx->ivlen);
 922                         gctx->iv_gen = 1;
 923                         return 1;
 924                         }
 925                 /* Fixed field must be at least 4 bytes and invocation field
 926                  * at least 8.
 927                  */
 928                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
 929                         return 0;
 930                 if (arg)
 931                         memcpy(gctx->iv, ptr, arg);
 932                 if (c->encrypt &&
 933                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
 934                         return 0;
 935                 gctx->iv_gen = 1;
 936                 return 1;
 937
 938         case EVP_CTRL_GCM_IV_GEN:
 939                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
 940                         return 0;
 941                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 942                 if (arg <= 0 || arg > gctx->ivlen)
 943                         arg = gctx->ivlen;
 944                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
 945                 /* Invocation field will be at least 8 bytes in size and
 946                  * so no need to check wrap around or increment more than
 947                  * last 8 bytes.
 948                  */
 949                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
 950                 gctx->iv_set = 1;
 951                 return 1;
 952
 953         case EVP_CTRL_GCM_SET_IV_INV:
 954                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
 955                         return 0;
 956                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
 957                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 958                 gctx->iv_set = 1;
 959                 return 1;
 960
 961         case EVP_CTRL_AEAD_TLS1_AAD:
 962                 /* Save the AAD for later use */
 963                 if (arg != 13)
 964                         return 0;
 965                 memcpy(c->buf, ptr, arg);
 966                 gctx->tls_aad_len = arg;
 967                         {
 968                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
 969                         /* Correct length for explicit IV */
 970                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
 971                         /* If decrypting correct for tag too */
 972                         if (!c->encrypt)
 973                                 len -= EVP_GCM_TLS_TAG_LEN;
 974                         c->buf[arg-2] = len>>8;
 975                         c->buf[arg-1] = len & 0xff;
 976                         }
 977                 /* Extra padding: tag appended to record */
 978                 return EVP_GCM_TLS_TAG_LEN;
 979
 980         default:
 981                 return -1;
 982
 983                 }
 984         }
 985
 986 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 987                         const unsigned char *iv, int enc)
 988         {
 989         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 990         if (!iv && !key)
 991                 return 1;
 992         if (key)
 993                 { do {
 994 #ifdef VPAES_CAPABLE
 995                 if (VPAES_CAPABLE)
 996                         {
 997                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 998                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 999                                         (block128_f)vpaes_encrypt);
1000                         break;
1001                         }
1002 #endif
1003                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
1004                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1005                 } while (0);
1006
1007                 /* If we have an iv can set it directly, otherwise use
1008                  * saved IV.
1009                  */
1010                 if (iv == NULL && gctx->iv_set)
1011                         iv = gctx->iv;
1012                 if (iv)
1013                         {
1014                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1015                         gctx->iv_set = 1;
1016                         }
1017                 gctx->key_set = 1;
1018                 }
1019         else
1020                 {
1021                 /* If key set use IV, otherwise copy */
1022                 if (gctx->key_set)
1023                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1024                 else
1025                         memcpy(gctx->iv, iv, gctx->ivlen);
1026                 gctx->iv_set = 1;
1027                 gctx->iv_gen = 0;
1028                 }
1029         return 1;
1030         }
1031
1032 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1033  * followed by the payload and finally the tag. On encrypt generate IV,
1034  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1035  * and verify tag.
1036  */
1037
1038 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1039                 const unsigned char *in, size_t len)
1040         {
1041         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1042         int rv = -1;
1043         /* Encrypt/decrypt must be performed in place */
1044         if (out != in)
1045                 return -1;
1046         /* Set IV from start of buffer or generate IV and write to start
1047          * of buffer.
1048          */
1049         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1050                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1051                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1052                 goto err;
1053         /* Use saved AAD */
1054         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1055                 goto err;
1056         /* Fix buffer and length to point to payload */
1057         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1058         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1059         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1060         if (ctx->encrypt)
1061                 {
1062                 /* Encrypt payload */
1063                 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1064                         goto err;
1065                 out += len;
1066                 /* Finally write tag */
1067                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1068                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1069                 }
1070         else
1071                 {
1072                 /* Decrypt */
1073                 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1074                         goto err;
1075                 /* Retrieve tag */
1076                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1077                                         EVP_GCM_TLS_TAG_LEN);
1078                 /* If tag mismatch wipe buffer */
1079                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1080                         {
1081                         OPENSSL_cleanse(out, len);
1082                         goto err;
1083                         }
1084                 rv = len;
1085                 }
1086
1087         err:
1088         gctx->iv_set = 0;
1089         gctx->tls_aad_len = -1;
1090         return rv;
1091         }
1092
1093 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1094                 const unsigned char *in, size_t len)
1095         {
1096         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1097         /* If not set up, return error */
1098         if (!gctx->key_set)
1099                 return -1;
1100
1101         if (gctx->tls_aad_len >= 0)
1102                 return aes_gcm_tls_cipher(ctx, out, in, len);
1103
1104         if (!gctx->iv_set)
1105                 return -1;
1106         if (!ctx->encrypt && gctx->taglen < 0)
1107                 return -1;
1108         if (in)
1109                 {
1110                 if (out == NULL)
1111                         {
1112                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1113                                 return -1;
1114                         }
1115                 else if (ctx->encrypt)
1116                         {
1117                         if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1118                                 return -1;
1119                         }
1120                 else
1121                         {
1122                         if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1123                                 return -1;
1124                         }
1125                 return len;
1126                 }
1127         else
1128                 {
1129                 if (!ctx->encrypt)
1130                         {
1131                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1132                                         ctx->buf, gctx->taglen) != 0)
1133                                 return -1;
1134                         gctx->iv_set = 0;
1135                         return 0;
1136                         }
1137                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1138                 gctx->taglen = 16;
1139                 /* Don't reuse the IV */
1140                 gctx->iv_set = 0;
1141                 return 0;
1142                 }
1143
1144         }
1145
1146 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1147                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1148                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1149
1150 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1151                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1152 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1153                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1154 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1155                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1156
1157 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1158         {
1159         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1160         if (type != EVP_CTRL_INIT)
1161                 return -1;
1162         /* key1 and key2 are used as an indicator both key and IV are set */
1163         xctx->xts.key1 = NULL;
1164         xctx->xts.key2 = NULL;
1165         return 1;
1166         }
1167
1168 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1169                         const unsigned char *iv, int enc)
1170         {
1171         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1172         if (!iv && !key)
1173                 return 1;
1174
1175         if (key) do
1176                 {
1177                 /* key_len is two AES keys */
1178 #ifdef VPAES_CAPABLE
1179                 if (VPAES_CAPABLE)
1180                     {
1181                     if (enc)
1182                         {
1183                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1184                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1185                         }
1186                     else
1187                         {
1188                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1189                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1190                         }
1191
1192                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1193                                                 ctx->key_len * 4, &xctx->ks2);
1194                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1195
1196                 xctx->xts.key1 = &xctx->ks1;
1197                 break;
1198                 }
1199 #endif
1200                 if (enc)
1201                         {
1202                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1203                         xctx->xts.block1 = (block128_f)AES_encrypt;
1204                         }
1205                 else
1206                         {
1207                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1208                         xctx->xts.block1 = (block128_f)AES_decrypt;
1209                         }
1210
1211                 AES_set_encrypt_key(key + ctx->key_len/2,
1212                                                 ctx->key_len * 4, &xctx->ks2);
1213                 xctx->xts.block2 = (block128_f)AES_encrypt;
1214
1215                 xctx->xts.key1 = &xctx->ks1;
1216                 } while (0);
1217
1218         if (iv)
1219                 {
1220                 xctx->xts.key2 = &xctx->ks2;
1221                 memcpy(ctx->iv, iv, 16);
1222                 }
1223
1224         return 1;
1225         }
1226
1227 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1228                 const unsigned char *in, size_t len)
1229         {
1230         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1231         if (!xctx->xts.key1 || !xctx->xts.key2)
1232                 return -1;
1233         if (!out || !in)
1234                 return -1;
1235 #ifdef OPENSSL_FIPS
1236         /* Requirement of SP800-38E */
1237         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1238                         (len > (1L<<20)*16))
1239                 {
1240                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1241                 return -1;
1242                 }
1243 #endif
1244         if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1245                                                                 ctx->encrypt))
1246                 return -1;
1247         return len;
1248         }
1249
1250 #define aes_xts_cleanup NULL
1251
1252 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1253 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1254
1255 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1256         {
1257         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1258         switch (type)
1259                 {
1260         case EVP_CTRL_INIT:
1261                 cctx->key_set = 0;
1262                 cctx->iv_set = 0;
1263                 cctx->L = 8;
1264                 cctx->M = 12;
1265                 cctx->tag_set = 0;
1266                 cctx->len_set = 0;
1267                 return 1;
1268
1269         case EVP_CTRL_CCM_SET_IVLEN:
1270                 arg = 15 - arg;
1271         case EVP_CTRL_CCM_SET_L:
1272                 if (arg < 2 || arg > 8)
1273                         return 0;
1274                 cctx->L = arg;
1275                 return 1;
1276
1277         case EVP_CTRL_CCM_SET_TAG:
1278                 if ((arg & 1) || arg < 4 || arg > 16)
1279                         return 0;
1280                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1281                         return 0;
1282                 if (ptr)
1283                         {
1284                         cctx->tag_set = 1;
1285                         memcpy(c->buf, ptr, arg);
1286                         }
1287                 cctx->M = arg;
1288                 return 1;
1289
1290         case EVP_CTRL_CCM_GET_TAG:
1291                 if (!c->encrypt || !cctx->tag_set)
1292                         return 0;
1293                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1294                         return 0;
1295                 cctx->tag_set = 0;
1296                 cctx->iv_set = 0;
1297                 cctx->len_set = 0;
1298                 return 1;
1299
1300         default:
1301                 return -1;
1302
1303                 }
1304         }
1305
1306 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1307                         const unsigned char *iv, int enc)
1308         {
1309         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1310         if (!iv && !key)
1311                 return 1;
1312         if (key) do
1313                 {
1314 #ifdef VPAES_CAPABLE
1315                 if (VPAES_CAPABLE)
1316                         {
1317                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1318                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1319                                         &cctx->ks, (block128_f)vpaes_encrypt);
1320                         cctx->key_set = 1;
1321                         break;
1322                         }
1323 #endif
1324                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1325                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1326                                         &cctx->ks, (block128_f)AES_encrypt);
1327                 cctx->key_set = 1;
1328                 } while (0);
1329         if (iv)
1330                 {
1331                 memcpy(ctx->iv, iv, 15 - cctx->L);
1332                 cctx->iv_set = 1;
1333                 }
1334         return 1;
1335         }
1336
1337 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1338                 const unsigned char *in, size_t len)
1339         {
1340         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1341         CCM128_CONTEXT *ccm = &cctx->ccm;
1342         /* If not set up, return error */
1343         if (!cctx->iv_set && !cctx->key_set)
1344                 return -1;
1345         if (!ctx->encrypt && !cctx->tag_set)
1346                 return -1;
1347         if (!out)
1348                 {
1349                 if (!in)
1350                         {
1351                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1352                                 return -1;
1353                         cctx->len_set = 1;
1354                         return len;
1355                         }
1356                 /* If have AAD need message length */
1357                 if (!cctx->len_set && len)
1358                         return -1;
1359                 CRYPTO_ccm128_aad(ccm, in, len);
1360                 return len;
1361                 }
1362         /* EVP_*Final() doesn't return any data */
1363         if (!in)
1364                 return 0;
1365         /* If not set length yet do it */
1366         if (!cctx->len_set)
1367                 {
1368                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1369                         return -1;
1370                 cctx->len_set = 1;
1371                 }
1372         if (ctx->encrypt)
1373                 {
1374                 if (CRYPTO_ccm128_encrypt(ccm, in, out, len))
1375                         return -1;
1376                 cctx->tag_set = 1;
1377                 return len;
1378                 }
1379         else
1380                 {
1381                 int rv = -1;
1382                 if (!CRYPTO_ccm128_decrypt(ccm, in, out, len))
1383                         {
1384                         unsigned char tag[16];
1385                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1386                                 {
1387                                 if (!memcmp(tag, ctx->buf, cctx->M))
1388                                         rv = len;
1389                                 }
1390                         }
1391                 if (rv == -1)
1392                         OPENSSL_cleanse(out, len);
1393                 cctx->iv_set = 0;
1394                 cctx->tag_set = 0;
1395                 cctx->len_set = 0;
1396                 return rv;
1397                 }
1398
1399         }
1400
1401 #define aes_ccm_cleanup NULL
1402
1403 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1404 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1405 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1406
1407 #endif