crypto/openssl/crypto/evp/e_aes.c

   1 /* ====================================================================
   2  * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  * ====================================================================
  48  *
  49  */
  50
  51 #include <openssl/opensslconf.h>
  52 #ifndef OPENSSL_NO_AES
  53 #include <openssl/crypto.h>
  54 #include <openssl/evp.h>
  55 #include <openssl/err.h>
  56 #include <string.h>
  57 #include <assert.h>
  58 #include <openssl/aes.h>
  59 #include "evp_locl.h"
  60 #ifndef OPENSSL_FIPS
  61 #include "modes_lcl.h"
  62 #include <openssl/rand.h>
  63
  64 typedef struct
  65         {
  66         AES_KEY ks;
  67         block128_f block;
  68         union {
  69                 cbc128_f cbc;
  70                 ctr128_f ctr;
  71         } stream;
  72         } EVP_AES_KEY;
  73
  74 typedef struct
  75         {
  76         AES_KEY ks;             /* AES key schedule to use */
  77         int key_set;            /* Set if key initialised */
  78         int iv_set;             /* Set if an iv is set */
  79         GCM128_CONTEXT gcm;
  80         unsigned char *iv;      /* Temporary IV store */
  81         int ivlen;              /* IV length */
  82         int taglen;
  83         int iv_gen;             /* It is OK to generate IVs */
  84         int tls_aad_len;        /* TLS AAD length */
  85         ctr128_f ctr;
  86         } EVP_AES_GCM_CTX;
  87
  88 typedef struct
  89         {
  90         AES_KEY ks1, ks2;       /* AES key schedules to use */
  91         XTS128_CONTEXT xts;
  92         void     (*stream)(const unsigned char *in,
  93                         unsigned char *out, size_t length,
  94                         const AES_KEY *key1, const AES_KEY *key2,
  95                         const unsigned char iv[16]);
  96         } EVP_AES_XTS_CTX;
  97
  98 typedef struct
  99         {
 100         AES_KEY ks;             /* AES key schedule to use */
 101         int key_set;            /* Set if key initialised */
 102         int iv_set;             /* Set if an iv is set */
 103         int tag_set;            /* Set if tag is valid */
 104         int len_set;            /* Set if message length set */
 105         int L, M;               /* L and M parameters from RFC3610 */
 106         CCM128_CONTEXT ccm;
 107         ccm128_f str;
 108         } EVP_AES_CCM_CTX;
 109
 110 #define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
 111
 112 #ifdef VPAES_ASM
 113 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
 114                         AES_KEY *key);
 115 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
 116                         AES_KEY *key);
 117
 118 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
 119                         const AES_KEY *key);
 120 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
 121                         const AES_KEY *key);
 122
 123 void vpaes_cbc_encrypt(const unsigned char *in,
 124                         unsigned char *out,
 125                         size_t length,
 126                         const AES_KEY *key,
 127                         unsigned char *ivec, int enc);
 128 #endif
 129 #ifdef BSAES_ASM
 130 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
 131                         size_t length, const AES_KEY *key,
 132                         unsigned char ivec[16], int enc);
 133 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
 134                         size_t len, const AES_KEY *key,
 135                         const unsigned char ivec[16]);
 136 void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
 137                         size_t len, const AES_KEY *key1,
 138                         const AES_KEY *key2, const unsigned char iv[16]);
 139 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
 140                         size_t len, const AES_KEY *key1,
 141                         const AES_KEY *key2, const unsigned char iv[16]);
 142 #endif
 143 #ifdef AES_CTR_ASM
 144 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 145                         size_t blocks, const AES_KEY *key,
 146                         const unsigned char ivec[AES_BLOCK_SIZE]);
 147 #endif
 148 #ifdef AES_XTS_ASM
 149 void AES_xts_encrypt(const char *inp,char *out,size_t len,
 150                         const AES_KEY *key1, const AES_KEY *key2,
 151                         const unsigned char iv[16]);
 152 void AES_xts_decrypt(const char *inp,char *out,size_t len,
 153                         const AES_KEY *key1, const AES_KEY *key2,
 154                         const unsigned char iv[16]);
 155 #endif
 156
 157 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 158         ((defined(__i386)       || defined(__i386__)    || \
 159           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 160         defined(__x86_64)       || defined(__x86_64__)  || \
 161         defined(_M_AMD64)       || defined(_M_X64)      || \
 162         defined(__INTEL__)                              )
 163
 164 extern unsigned int OPENSSL_ia32cap_P[2];
 165
 166 #ifdef VPAES_ASM
 167 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 168 #endif
 169 #ifdef BSAES_ASM
 170 #define BSAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 171 #endif
 172 /*
 173  * AES-NI section
 174  */
 175 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 176
 177 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 178                         AES_KEY *key);
 179 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 180                         AES_KEY *key);
 181
 182 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 183                         const AES_KEY *key);
 184 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 185                         const AES_KEY *key);
 186
 187 void aesni_ecb_encrypt(const unsigned char *in,
 188                         unsigned char *out,
 189                         size_t length,
 190                         const AES_KEY *key,
 191                         int enc);
 192 void aesni_cbc_encrypt(const unsigned char *in,
 193                         unsigned char *out,
 194                         size_t length,
 195                         const AES_KEY *key,
 196                         unsigned char *ivec, int enc);
 197
 198 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 199                         unsigned char *out,
 200                         size_t blocks,
 201                         const void *key,
 202                         const unsigned char *ivec);
 203
 204 void aesni_xts_encrypt(const unsigned char *in,
 205                         unsigned char *out,
 206                         size_t length,
 207                         const AES_KEY *key1, const AES_KEY *key2,
 208                         const unsigned char iv[16]);
 209
 210 void aesni_xts_decrypt(const unsigned char *in,
 211                         unsigned char *out,
 212                         size_t length,
 213                         const AES_KEY *key1, const AES_KEY *key2,
 214                         const unsigned char iv[16]);
 215
 216 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 217                         unsigned char *out,
 218                         size_t blocks,
 219                         const void *key,
 220                         const unsigned char ivec[16],
 221                         unsigned char cmac[16]);
 222
 223 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 224                         unsigned char *out,
 225                         size_t blocks,
 226                         const void *key,
 227                         const unsigned char ivec[16],
 228                         unsigned char cmac[16]);
 229
 230 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 231                    const unsigned char *iv, int enc)
 232         {
 233         int ret, mode;
 234         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 235
 236         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 237         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 238             && !enc)
 239                 {
 240                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 241                 dat->block      = (block128_f)aesni_decrypt;
 242                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 243                                         (cbc128_f)aesni_cbc_encrypt :
 244                                         NULL;
 245                 }
 246         else    {
 247                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 248                 dat->block      = (block128_f)aesni_encrypt;
 249                 if (mode==EVP_CIPH_CBC_MODE)
 250                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 251                 else if (mode==EVP_CIPH_CTR_MODE)
 252                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 253                 else
 254                         dat->stream.cbc = NULL;
 255                 }
 256
 257         if(ret < 0)
 258                 {
 259                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 260                 return 0;
 261                 }
 262
 263         return 1;
 264         }
 265
 266 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 267         const unsigned char *in, size_t len)
 268 {
 269         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 270
 271         return 1;
 272 }
 273
 274 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 275         const unsigned char *in, size_t len)
 276 {
 277         size_t  bl = ctx->cipher->block_size;
 278
 279         if (len<bl)     return 1;
 280
 281         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 282
 283         return 1;
 284 }
 285
 286 #define aesni_ofb_cipher aes_ofb_cipher
 287 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 288         const unsigned char *in,size_t len);
 289
 290 #define aesni_cfb_cipher aes_cfb_cipher
 291 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 292         const unsigned char *in,size_t len);
 293
 294 #define aesni_cfb8_cipher aes_cfb8_cipher
 295 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 296         const unsigned char *in,size_t len);
 297
 298 #define aesni_cfb1_cipher aes_cfb1_cipher
 299 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 300         const unsigned char *in,size_t len);
 301
 302 #define aesni_ctr_cipher aes_ctr_cipher
 303 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 304                 const unsigned char *in, size_t len);
 305
 306 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 307                         const unsigned char *iv, int enc)
 308         {
 309         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 310         if (!iv && !key)
 311                 return 1;
 312         if (key)
 313                 {
 314                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 315                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 316                                 (block128_f)aesni_encrypt);
 317                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 318                 /* If we have an iv can set it directly, otherwise use
 319                  * saved IV.
 320                  */
 321                 if (iv == NULL && gctx->iv_set)
 322                         iv = gctx->iv;
 323                 if (iv)
 324                         {
 325                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 326                         gctx->iv_set = 1;
 327                         }
 328                 gctx->key_set = 1;
 329                 }
 330         else
 331                 {
 332                 /* If key set use IV, otherwise copy */
 333                 if (gctx->key_set)
 334                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 335                 else
 336                         memcpy(gctx->iv, iv, gctx->ivlen);
 337                 gctx->iv_set = 1;
 338                 gctx->iv_gen = 0;
 339                 }
 340         return 1;
 341         }
 342
 343 #define aesni_gcm_cipher aes_gcm_cipher
 344 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 345                 const unsigned char *in, size_t len);
 346
 347 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 348                         const unsigned char *iv, int enc)
 349         {
 350         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 351         if (!iv && !key)
 352                 return 1;
 353
 354         if (key)
 355                 {
 356                 /* key_len is two AES keys */
 357                 if (enc)
 358                         {
 359                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 360                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 361                         xctx->stream = aesni_xts_encrypt;
 362                         }
 363                 else
 364                         {
 365                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 366                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 367                         xctx->stream = aesni_xts_decrypt;
 368                         }
 369
 370                 aesni_set_encrypt_key(key + ctx->key_len/2,
 371                                                 ctx->key_len * 4, &xctx->ks2);
 372                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 373
 374                 xctx->xts.key1 = &xctx->ks1;
 375                 }
 376
 377         if (iv)
 378                 {
 379                 xctx->xts.key2 = &xctx->ks2;
 380                 memcpy(ctx->iv, iv, 16);
 381                 }
 382
 383         return 1;
 384         }
 385
 386 #define aesni_xts_cipher aes_xts_cipher
 387 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 388                 const unsigned char *in, size_t len);
 389
 390 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 391                         const unsigned char *iv, int enc)
 392         {
 393         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 394         if (!iv && !key)
 395                 return 1;
 396         if (key)
 397                 {
 398                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
 399                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 400                                         &cctx->ks, (block128_f)aesni_encrypt);
 401                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 402                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 403                 cctx->key_set = 1;
 404                 }
 405         if (iv)
 406                 {
 407                 memcpy(ctx->iv, iv, 15 - cctx->L);
 408                 cctx->iv_set = 1;
 409                 }
 410         return 1;
 411         }
 412
 413 #define aesni_ccm_cipher aes_ccm_cipher
 414 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 415                 const unsigned char *in, size_t len);
 416
 417 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 418 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 419         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 420         flags|EVP_CIPH_##MODE##_MODE,   \
 421         aesni_init_key,                 \
 422         aesni_##mode##_cipher,          \
 423         NULL,                           \
 424         sizeof(EVP_AES_KEY),            \
 425         NULL,NULL,NULL,NULL }; \
 426 static const EVP_CIPHER aes_##keylen##_##mode = { \
 427         nid##_##keylen##_##nmode,blocksize,     \
 428         keylen/8,ivlen, \
 429         flags|EVP_CIPH_##MODE##_MODE,   \
 430         aes_init_key,                   \
 431         aes_##mode##_cipher,            \
 432         NULL,                           \
 433         sizeof(EVP_AES_KEY),            \
 434         NULL,NULL,NULL,NULL }; \
 435 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 436 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 437
 438 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 439 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 440         nid##_##keylen##_##mode,blocksize, \
 441         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 442         flags|EVP_CIPH_##MODE##_MODE,   \
 443         aesni_##mode##_init_key,        \
 444         aesni_##mode##_cipher,          \
 445         aes_##mode##_cleanup,           \
 446         sizeof(EVP_AES_##MODE##_CTX),   \
 447         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 448 static const EVP_CIPHER aes_##keylen##_##mode = { \
 449         nid##_##keylen##_##mode,blocksize, \
 450         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 451         flags|EVP_CIPH_##MODE##_MODE,   \
 452         aes_##mode##_init_key,          \
 453         aes_##mode##_cipher,            \
 454         aes_##mode##_cleanup,           \
 455         sizeof(EVP_AES_##MODE##_CTX),   \
 456         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 457 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 458 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 459
 460 #else
 461
 462 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 463 static const EVP_CIPHER aes_##keylen##_##mode = { \
 464         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 465         flags|EVP_CIPH_##MODE##_MODE,   \
 466         aes_init_key,                   \
 467         aes_##mode##_cipher,            \
 468         NULL,                           \
 469         sizeof(EVP_AES_KEY),            \
 470         NULL,NULL,NULL,NULL }; \
 471 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 472 { return &aes_##keylen##_##mode; }
 473
 474 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 475 static const EVP_CIPHER aes_##keylen##_##mode = { \
 476         nid##_##keylen##_##mode,blocksize, \
 477         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 478         flags|EVP_CIPH_##MODE##_MODE,   \
 479         aes_##mode##_init_key,          \
 480         aes_##mode##_cipher,            \
 481         aes_##mode##_cleanup,           \
 482         sizeof(EVP_AES_##MODE##_CTX),   \
 483         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 484 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 485 { return &aes_##keylen##_##mode; }
 486 #endif
 487
 488 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 489         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 490         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 491         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 492         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 493         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 494         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 495         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 496
 497 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 498                    const unsigned char *iv, int enc)
 499         {
 500         int ret, mode;
 501         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 502
 503         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 504         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 505             && !enc)
 506 #ifdef BSAES_CAPABLE
 507             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 508                 {
 509                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 510                 dat->block      = (block128_f)AES_decrypt;
 511                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 512                 }
 513             else
 514 #endif
 515 #ifdef VPAES_CAPABLE
 516             if (VPAES_CAPABLE)
 517                 {
 518                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 519                 dat->block      = (block128_f)vpaes_decrypt;
 520                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 521                                         (cbc128_f)vpaes_cbc_encrypt :
 522                                         NULL;
 523                 }
 524             else
 525 #endif
 526                 {
 527                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 528                 dat->block      = (block128_f)AES_decrypt;
 529                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 530                                         (cbc128_f)AES_cbc_encrypt :
 531                                         NULL;
 532                 }
 533         else
 534 #ifdef BSAES_CAPABLE
 535             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 536                 {
 537                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 538                 dat->block      = (block128_f)AES_encrypt;
 539                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 540                 }
 541             else
 542 #endif
 543 #ifdef VPAES_CAPABLE
 544             if (VPAES_CAPABLE)
 545                 {
 546                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 547                 dat->block      = (block128_f)vpaes_encrypt;
 548                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 549                                         (cbc128_f)vpaes_cbc_encrypt :
 550                                         NULL;
 551                 }
 552             else
 553 #endif
 554                 {
 555                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 556                 dat->block      = (block128_f)AES_encrypt;
 557                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 558                                         (cbc128_f)AES_cbc_encrypt :
 559                                         NULL;
 560 #ifdef AES_CTR_ASM
 561                 if (mode==EVP_CIPH_CTR_MODE)
 562                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 563 #endif
 564                 }
 565
 566         if(ret < 0)
 567                 {
 568                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 569                 return 0;
 570                 }
 571
 572         return 1;
 573         }
 574
 575 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 576         const unsigned char *in, size_t len)
 577 {
 578         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 579
 580         if (dat->stream.cbc)
 581                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 582         else if (ctx->encrypt)
 583                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 584         else
 585                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 586
 587         return 1;
 588 }
 589
 590 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 591         const unsigned char *in, size_t len)
 592 {
 593         size_t  bl = ctx->cipher->block_size;
 594         size_t  i;
 595         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 596
 597         if (len<bl)     return 1;
 598
 599         for (i=0,len-=bl;i<=len;i+=bl)
 600                 (*dat->block)(in+i,out+i,&dat->ks);
 601
 602         return 1;
 603 }
 604
 605 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 606         const unsigned char *in,size_t len)
 607 {
 608         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 609
 610         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 611                         ctx->iv,&ctx->num,dat->block);
 612         return 1;
 613 }
 614
 615 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 616         const unsigned char *in,size_t len)
 617 {
 618         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 619
 620         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
 621                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 622         return 1;
 623 }
 624
 625 static int aes_cfb8_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         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
 631                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 632         return 1;
 633 }
 634
 635 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 636         const unsigned char *in,size_t len)
 637 {
 638         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 639
 640         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 641                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
 642                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 643                 return 1;
 644         }
 645
 646         while (len>=MAXBITCHUNK) {
 647                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
 648                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 649                 len-=MAXBITCHUNK;
 650         }
 651         if (len)
 652                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
 653                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 654
 655         return 1;
 656 }
 657
 658 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
 659                 const unsigned char *in, size_t len)
 660 {
 661         unsigned int num = ctx->num;
 662         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 663
 664         if (dat->stream.ctr)
 665                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
 666                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
 667         else
 668                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
 669                         ctx->iv,ctx->buf,&num,dat->block);
 670         ctx->num = (size_t)num;
 671         return 1;
 672 }
 673
 674 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
 675 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
 676 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
 677
 678 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
 679         {
 680         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 681         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
 682         if (gctx->iv != c->iv)
 683                 OPENSSL_free(gctx->iv);
 684         return 1;
 685         }
 686
 687 /* increment counter (64-bit int) by 1 */
 688 static void ctr64_inc(unsigned char *counter) {
 689         int n=8;
 690         unsigned char  c;
 691
 692         do {
 693                 --n;
 694                 c = counter[n];
 695                 ++c;
 696                 counter[n] = c;
 697                 if (c) return;
 698         } while (n);
 699 }
 700
 701 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 702         {
 703         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 704         switch (type)
 705                 {
 706         case EVP_CTRL_INIT:
 707                 gctx->key_set = 0;
 708                 gctx->iv_set = 0;
 709                 gctx->ivlen = c->cipher->iv_len;
 710                 gctx->iv = c->iv;
 711                 gctx->taglen = -1;
 712                 gctx->iv_gen = 0;
 713                 gctx->tls_aad_len = -1;
 714                 return 1;
 715
 716         case EVP_CTRL_GCM_SET_IVLEN:
 717                 if (arg <= 0)
 718                         return 0;
 719 #ifdef OPENSSL_FIPS
 720                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
 721                                                  && arg < 12)
 722                         return 0;
 723 #endif
 724                 /* Allocate memory for IV if needed */
 725                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
 726                         {
 727                         if (gctx->iv != c->iv)
 728                                 OPENSSL_free(gctx->iv);
 729                         gctx->iv = OPENSSL_malloc(arg);
 730                         if (!gctx->iv)
 731                                 return 0;
 732                         }
 733                 gctx->ivlen = arg;
 734                 return 1;
 735
 736         case EVP_CTRL_GCM_SET_TAG:
 737                 if (arg <= 0 || arg > 16 || c->encrypt)
 738                         return 0;
 739                 memcpy(c->buf, ptr, arg);
 740                 gctx->taglen = arg;
 741                 return 1;
 742
 743         case EVP_CTRL_GCM_GET_TAG:
 744                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
 745                         return 0;
 746                 memcpy(ptr, c->buf, arg);
 747                 return 1;
 748
 749         case EVP_CTRL_GCM_SET_IV_FIXED:
 750                 /* Special case: -1 length restores whole IV */
 751                 if (arg == -1)
 752                         {
 753                         memcpy(gctx->iv, ptr, gctx->ivlen);
 754                         gctx->iv_gen = 1;
 755                         return 1;
 756                         }
 757                 /* Fixed field must be at least 4 bytes and invocation field
 758                  * at least 8.
 759                  */
 760                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
 761                         return 0;
 762                 if (arg)
 763                         memcpy(gctx->iv, ptr, arg);
 764                 if (c->encrypt &&
 765                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
 766                         return 0;
 767                 gctx->iv_gen = 1;
 768                 return 1;
 769
 770         case EVP_CTRL_GCM_IV_GEN:
 771                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
 772                         return 0;
 773                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 774                 if (arg <= 0 || arg > gctx->ivlen)
 775                         arg = gctx->ivlen;
 776                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
 777                 /* Invocation field will be at least 8 bytes in size and
 778                  * so no need to check wrap around or increment more than
 779                  * last 8 bytes.
 780                  */
 781                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
 782                 gctx->iv_set = 1;
 783                 return 1;
 784
 785         case EVP_CTRL_GCM_SET_IV_INV:
 786                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
 787                         return 0;
 788                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
 789                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 790                 gctx->iv_set = 1;
 791                 return 1;
 792
 793         case EVP_CTRL_AEAD_TLS1_AAD:
 794                 /* Save the AAD for later use */
 795                 if (arg != 13)
 796                         return 0;
 797                 memcpy(c->buf, ptr, arg);
 798                 gctx->tls_aad_len = arg;
 799                         {
 800                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
 801                         /* Correct length for explicit IV */
 802                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
 803                         /* If decrypting correct for tag too */
 804                         if (!c->encrypt)
 805                                 len -= EVP_GCM_TLS_TAG_LEN;
 806                         c->buf[arg-2] = len>>8;
 807                         c->buf[arg-1] = len & 0xff;
 808                         }
 809                 /* Extra padding: tag appended to record */
 810                 return EVP_GCM_TLS_TAG_LEN;
 811
 812         case EVP_CTRL_COPY:
 813                 {
 814                         EVP_CIPHER_CTX *out = ptr;
 815                         EVP_AES_GCM_CTX *gctx_out = out->cipher_data;
 816                         if (gctx->gcm.key)
 817                                 {
 818                                 if (gctx->gcm.key != &gctx->ks)
 819                                         return 0;
 820                                 gctx_out->gcm.key = &gctx_out->ks;
 821                                 }
 822                         if (gctx->iv == c->iv)
 823                                 gctx_out->iv = out->iv;
 824                         else
 825                         {
 826                                 gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
 827                                 if (!gctx_out->iv)
 828                                         return 0;
 829                                 memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
 830                         }
 831                         return 1;
 832                 }
 833
 834         default:
 835                 return -1;
 836
 837                 }
 838         }
 839
 840 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 841                         const unsigned char *iv, int enc)
 842         {
 843         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 844         if (!iv && !key)
 845                 return 1;
 846         if (key)
 847                 { do {
 848 #ifdef BSAES_CAPABLE
 849                 if (BSAES_CAPABLE)
 850                         {
 851                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 852                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 853                                         (block128_f)AES_encrypt);
 854                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 855                         break;
 856                         }
 857                 else
 858 #endif
 859 #ifdef VPAES_CAPABLE
 860                 if (VPAES_CAPABLE)
 861                         {
 862                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 863                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 864                                         (block128_f)vpaes_encrypt);
 865                         gctx->ctr = NULL;
 866                         break;
 867                         }
 868                 else
 869 #endif
 870                 (void)0;        /* terminate potentially open 'else' */
 871
 872                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 873                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
 874 #ifdef AES_CTR_ASM
 875                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
 876 #else
 877                 gctx->ctr = NULL;
 878 #endif
 879                 } while (0);
 880
 881                 /* If we have an iv can set it directly, otherwise use
 882                  * saved IV.
 883                  */
 884                 if (iv == NULL && gctx->iv_set)
 885                         iv = gctx->iv;
 886                 if (iv)
 887                         {
 888                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 889                         gctx->iv_set = 1;
 890                         }
 891                 gctx->key_set = 1;
 892                 }
 893         else
 894                 {
 895                 /* If key set use IV, otherwise copy */
 896                 if (gctx->key_set)
 897                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 898                 else
 899                         memcpy(gctx->iv, iv, gctx->ivlen);
 900                 gctx->iv_set = 1;
 901                 gctx->iv_gen = 0;
 902                 }
 903         return 1;
 904         }
 905
 906 /* Handle TLS GCM packet format. This consists of the last portion of the IV
 907  * followed by the payload and finally the tag. On encrypt generate IV,
 908  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
 909  * and verify tag.
 910  */
 911
 912 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 913                 const unsigned char *in, size_t len)
 914         {
 915         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 916         int rv = -1;
 917         /* Encrypt/decrypt must be performed in place */
 918         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
 919                 return -1;
 920         /* Set IV from start of buffer or generate IV and write to start
 921          * of buffer.
 922          */
 923         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
 924                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
 925                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
 926                 goto err;
 927         /* Use saved AAD */
 928         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
 929                 goto err;
 930         /* Fix buffer and length to point to payload */
 931         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 932         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 933         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 934         if (ctx->encrypt)
 935                 {
 936                 /* Encrypt payload */
 937                 if (gctx->ctr)
 938                         {
 939                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 940                                                         in, out, len,
 941                                                         gctx->ctr))
 942                                 goto err;
 943                         }
 944                 else    {
 945                         if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
 946                                 goto err;
 947                         }
 948                 out += len;
 949                 /* Finally write tag */
 950                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
 951                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 952                 }
 953         else
 954                 {
 955                 /* Decrypt */
 956                 if (gctx->ctr)
 957                         {
 958                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
 959                                                         in, out, len,
 960                                                         gctx->ctr))
 961                                 goto err;
 962                         }
 963                 else    {
 964                         if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
 965                                 goto err;
 966                         }
 967                 /* Retrieve tag */
 968                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
 969                                         EVP_GCM_TLS_TAG_LEN);
 970                 /* If tag mismatch wipe buffer */
 971                 if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
 972                         {
 973                         OPENSSL_cleanse(out, len);
 974                         goto err;
 975                         }
 976                 rv = len;
 977                 }
 978
 979         err:
 980         gctx->iv_set = 0;
 981         gctx->tls_aad_len = -1;
 982         return rv;
 983         }
 984
 985 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 986                 const unsigned char *in, size_t len)
 987         {
 988         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 989         /* If not set up, return error */
 990         if (!gctx->key_set)
 991                 return -1;
 992
 993         if (gctx->tls_aad_len >= 0)
 994                 return aes_gcm_tls_cipher(ctx, out, in, len);
 995
 996         if (!gctx->iv_set)
 997                 return -1;
 998         if (in)
 999                 {
1000                 if (out == NULL)
1001                         {
1002                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1003                                 return -1;
1004                         }
1005                 else if (ctx->encrypt)
1006                         {
1007                         if (gctx->ctr)
1008                                 {
1009                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1010                                                         in, out, len,
1011                                                         gctx->ctr))
1012                                         return -1;
1013                                 }
1014                         else    {
1015                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1016                                         return -1;
1017                                 }
1018                         }
1019                 else
1020                         {
1021                         if (gctx->ctr)
1022                                 {
1023                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1024                                                         in, out, len,
1025                                                         gctx->ctr))
1026                                         return -1;
1027                                 }
1028                         else    {
1029                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1030                                         return -1;
1031                                 }
1032                         }
1033                 return len;
1034                 }
1035         else
1036                 {
1037                 if (!ctx->encrypt)
1038                         {
1039                         if (gctx->taglen < 0)
1040                                 return -1;
1041                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1042                                         ctx->buf, gctx->taglen) != 0)
1043                                 return -1;
1044                         gctx->iv_set = 0;
1045                         return 0;
1046                         }
1047                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1048                 gctx->taglen = 16;
1049                 /* Don't reuse the IV */
1050                 gctx->iv_set = 0;
1051                 return 0;
1052                 }
1053
1054         }
1055
1056 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1057                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1058                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
1059                 | EVP_CIPH_CUSTOM_COPY)
1060
1061 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1062                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1063 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1064                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1065 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1066                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1067
1068 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1069         {
1070         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1071         if (type == EVP_CTRL_COPY)
1072                 {
1073                 EVP_CIPHER_CTX *out = ptr;
1074                 EVP_AES_XTS_CTX *xctx_out = out->cipher_data;
1075                 if (xctx->xts.key1)
1076                         {
1077                         if (xctx->xts.key1 != &xctx->ks1)
1078                                 return 0;
1079                         xctx_out->xts.key1 = &xctx_out->ks1;
1080                         }
1081                 if (xctx->xts.key2)
1082                         {
1083                         if (xctx->xts.key2 != &xctx->ks2)
1084                                 return 0;
1085                         xctx_out->xts.key2 = &xctx_out->ks2;
1086                         }
1087                 return 1;
1088                 }
1089         else if (type != EVP_CTRL_INIT)
1090                 return -1;
1091         /* key1 and key2 are used as an indicator both key and IV are set */
1092         xctx->xts.key1 = NULL;
1093         xctx->xts.key2 = NULL;
1094         return 1;
1095         }
1096
1097 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1098                         const unsigned char *iv, int enc)
1099         {
1100         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1101         if (!iv && !key)
1102                 return 1;
1103
1104         if (key) do
1105                 {
1106 #ifdef AES_XTS_ASM
1107                 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1108 #else
1109                 xctx->stream = NULL;
1110 #endif
1111                 /* key_len is two AES keys */
1112 #ifdef BSAES_CAPABLE
1113                 if (BSAES_CAPABLE)
1114                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1115                 else
1116 #endif
1117 #ifdef VPAES_CAPABLE
1118                 if (VPAES_CAPABLE)
1119                     {
1120                     if (enc)
1121                         {
1122                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1123                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1124                         }
1125                     else
1126                         {
1127                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1128                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1129                         }
1130
1131                     vpaes_set_encrypt_key(key + ctx->key_len/2,
1132                                                 ctx->key_len * 4, &xctx->ks2);
1133                     xctx->xts.block2 = (block128_f)vpaes_encrypt;
1134
1135                     xctx->xts.key1 = &xctx->ks1;
1136                     break;
1137                     }
1138                 else
1139 #endif
1140                 (void)0;        /* terminate potentially open 'else' */
1141
1142                 if (enc)
1143                         {
1144                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1145                         xctx->xts.block1 = (block128_f)AES_encrypt;
1146                         }
1147                 else
1148                         {
1149                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1150                         xctx->xts.block1 = (block128_f)AES_decrypt;
1151                         }
1152
1153                 AES_set_encrypt_key(key + ctx->key_len/2,
1154                                                 ctx->key_len * 4, &xctx->ks2);
1155                 xctx->xts.block2 = (block128_f)AES_encrypt;
1156
1157                 xctx->xts.key1 = &xctx->ks1;
1158                 } while (0);
1159
1160         if (iv)
1161                 {
1162                 xctx->xts.key2 = &xctx->ks2;
1163                 memcpy(ctx->iv, iv, 16);
1164                 }
1165
1166         return 1;
1167         }
1168
1169 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1170                 const unsigned char *in, size_t len)
1171         {
1172         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1173         if (!xctx->xts.key1 || !xctx->xts.key2)
1174                 return 0;
1175         if (!out || !in || len<AES_BLOCK_SIZE)
1176                 return 0;
1177 #ifdef OPENSSL_FIPS
1178         /* Requirement of SP800-38E */
1179         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1180                         (len > (1UL<<20)*16))
1181                 {
1182                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1183                 return 0;
1184                 }
1185 #endif
1186         if (xctx->stream)
1187                 (*xctx->stream)(in, out, len,
1188                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1189         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1190                                                                 ctx->encrypt))
1191                 return 0;
1192         return 1;
1193         }
1194
1195 #define aes_xts_cleanup NULL
1196
1197 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1198                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
1199                          | EVP_CIPH_CUSTOM_COPY)
1200
1201 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1202 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1203
1204 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1205         {
1206         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1207         switch (type)
1208                 {
1209         case EVP_CTRL_INIT:
1210                 cctx->key_set = 0;
1211                 cctx->iv_set = 0;
1212                 cctx->L = 8;
1213                 cctx->M = 12;
1214                 cctx->tag_set = 0;
1215                 cctx->len_set = 0;
1216                 return 1;
1217
1218         case EVP_CTRL_CCM_SET_IVLEN:
1219                 arg = 15 - arg;
1220         case EVP_CTRL_CCM_SET_L:
1221                 if (arg < 2 || arg > 8)
1222                         return 0;
1223                 cctx->L = arg;
1224                 return 1;
1225
1226         case EVP_CTRL_CCM_SET_TAG:
1227                 if ((arg & 1) || arg < 4 || arg > 16)
1228                         return 0;
1229                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1230                         return 0;
1231                 if (ptr)
1232                         {
1233                         cctx->tag_set = 1;
1234                         memcpy(c->buf, ptr, arg);
1235                         }
1236                 cctx->M = arg;
1237                 return 1;
1238
1239         case EVP_CTRL_CCM_GET_TAG:
1240                 if (!c->encrypt || !cctx->tag_set)
1241                         return 0;
1242                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1243                         return 0;
1244                 cctx->tag_set = 0;
1245                 cctx->iv_set = 0;
1246                 cctx->len_set = 0;
1247                 return 1;
1248
1249         case EVP_CTRL_COPY:
1250                 {
1251                         EVP_CIPHER_CTX *out = ptr;
1252                         EVP_AES_CCM_CTX *cctx_out = out->cipher_data;
1253                         if (cctx->ccm.key)
1254                                 {
1255                                 if (cctx->ccm.key != &cctx->ks)
1256                                         return 0;
1257                                 cctx_out->ccm.key = &cctx_out->ks;
1258                                 }
1259                         return 1;
1260                 }
1261
1262         default:
1263                 return -1;
1264
1265                 }
1266         }
1267
1268 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1269                         const unsigned char *iv, int enc)
1270         {
1271         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1272         if (!iv && !key)
1273                 return 1;
1274         if (key) do
1275                 {
1276 #ifdef VPAES_CAPABLE
1277                 if (VPAES_CAPABLE)
1278                         {
1279                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1280                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1281                                         &cctx->ks, (block128_f)vpaes_encrypt);
1282                         cctx->str = NULL;
1283                         cctx->key_set = 1;
1284                         break;
1285                         }
1286 #endif
1287                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1288                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1289                                         &cctx->ks, (block128_f)AES_encrypt);
1290                 cctx->str = NULL;
1291                 cctx->key_set = 1;
1292                 } while (0);
1293         if (iv)
1294                 {
1295                 memcpy(ctx->iv, iv, 15 - cctx->L);
1296                 cctx->iv_set = 1;
1297                 }
1298         return 1;
1299         }
1300
1301 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1302                 const unsigned char *in, size_t len)
1303         {
1304         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1305         CCM128_CONTEXT *ccm = &cctx->ccm;
1306         /* If not set up, return error */
1307         if (!cctx->iv_set && !cctx->key_set)
1308                 return -1;
1309         if (!ctx->encrypt && !cctx->tag_set)
1310                 return -1;
1311         if (!out)
1312                 {
1313                 if (!in)
1314                         {
1315                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1316                                 return -1;
1317                         cctx->len_set = 1;
1318                         return len;
1319                         }
1320                 /* If have AAD need message length */
1321                 if (!cctx->len_set && len)
1322                         return -1;
1323                 CRYPTO_ccm128_aad(ccm, in, len);
1324                 return len;
1325                 }
1326         /* EVP_*Final() doesn't return any data */
1327         if (!in)
1328                 return 0;
1329         /* If not set length yet do it */
1330         if (!cctx->len_set)
1331                 {
1332                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1333                         return -1;
1334                 cctx->len_set = 1;
1335                 }
1336         if (ctx->encrypt)
1337                 {
1338                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1339                                                 cctx->str) :
1340                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1341                         return -1;
1342                 cctx->tag_set = 1;
1343                 return len;
1344                 }
1345         else
1346                 {
1347                 int rv = -1;
1348                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1349                                                 cctx->str) :
1350                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1351                         {
1352                         unsigned char tag[16];
1353                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1354                                 {
1355                                 if (!CRYPTO_memcmp(tag, ctx->buf, cctx->M))
1356                                         rv = len;
1357                                 }
1358                         }
1359                 if (rv == -1)
1360                         OPENSSL_cleanse(out, len);
1361                 cctx->iv_set = 0;
1362                 cctx->tag_set = 0;
1363                 cctx->len_set = 0;
1364                 return rv;
1365                 }
1366
1367         }
1368
1369 #define aes_ccm_cleanup NULL
1370
1371 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1372 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1373 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1374
1375 #endif
1376 #endif