crypto/evp/e_aes.c

   1 /* ====================================================================
   2  * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  * ====================================================================
  48  *
  49  */
  50
  51 #include <openssl/opensslconf.h>
  52 #ifndef OPENSSL_NO_AES
  53 #include <openssl/evp.h>
  54 #include <openssl/err.h>
  55 #include <string.h>
  56 #include <assert.h>
  57 #include <openssl/aes.h>
  58 #include "evp_locl.h"
  59 #include "modes_lcl.h"
  60 #include <openssl/rand.h>
  61
  62 #ifndef OPENSSL_FIPSCANISTER
  63 #undef EVP_CIPH_FLAG_FIPS
  64 #define EVP_CIPH_FLAG_FIPS 0
  65 #endif
  66
  67 typedef struct
  68         {
  69         AES_KEY ks;
  70         block128_f block;
  71         union {
  72                 cbc128_f cbc;
  73                 ctr128_f ctr;
  74         } stream;
  75         } EVP_AES_KEY;
  76
  77 typedef struct
  78         {
  79         AES_KEY ks;             /* AES key schedule to use */
  80         int key_set;            /* Set if key initialised */
  81         int iv_set;             /* Set if an iv is set */
  82         GCM128_CONTEXT gcm;
  83         unsigned char *iv;      /* Temporary IV store */
  84         int ivlen;              /* IV length */
  85         int taglen;
  86         int iv_gen;             /* It is OK to generate IVs */
  87         int tls_aad_len;        /* TLS AAD length */
  88         ctr128_f ctr;
  89         } EVP_AES_GCM_CTX;
  90
  91 typedef struct
  92         {
  93         AES_KEY ks1, ks2;       /* AES key schedules to use */
  94         XTS128_CONTEXT xts;
  95         void     (*stream)(const unsigned char *in,
  96                         unsigned char *out, size_t length,
  97                         const AES_KEY *key1, const AES_KEY *key2,
  98                         const unsigned char iv[16]);
  99         } EVP_AES_XTS_CTX;
 100
 101 typedef struct
 102         {
 103         AES_KEY ks;             /* AES key schedule to use */
 104         int key_set;            /* Set if key initialised */
 105         int iv_set;             /* Set if an iv is set */
 106         int tag_set;            /* Set if tag is valid */
 107         int len_set;            /* Set if message length set */
 108         int L, M;               /* L and M parameters from RFC3610 */
 109         CCM128_CONTEXT ccm;
 110         ccm128_f str;
 111         } EVP_AES_CCM_CTX;
 112
 113 #define MAXBITCHUNK     ((size_t)1<<(sizeof(size_t)*8-4))
 114
 115 #ifdef VPAES_ASM
 116 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
 117                         AES_KEY *key);
 118 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
 119                         AES_KEY *key);
 120
 121 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
 122                         const AES_KEY *key);
 123 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
 124                         const AES_KEY *key);
 125
 126 void vpaes_cbc_encrypt(const unsigned char *in,
 127                         unsigned char *out,
 128                         size_t length,
 129                         const AES_KEY *key,
 130                         unsigned char *ivec, int enc);
 131 #endif
 132 #ifdef BSAES_ASM
 133 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
 134                         size_t length, const AES_KEY *key,
 135                         unsigned char ivec[16], int enc);
 136 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
 137                         size_t len, const AES_KEY *key,
 138                         const unsigned char ivec[16]);
 139 void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
 140                         size_t len, const AES_KEY *key1,
 141                         const AES_KEY *key2, const unsigned char iv[16]);
 142 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
 143                         size_t len, const AES_KEY *key1,
 144                         const AES_KEY *key2, const unsigned char iv[16]);
 145 #endif
 146 #ifdef AES_CTR_ASM
 147 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
 148                         size_t blocks, const AES_KEY *key,
 149                         const unsigned char ivec[AES_BLOCK_SIZE]);
 150 #endif
 151 #ifdef AES_XTS_ASM
 152 void AES_xts_encrypt(const char *inp,char *out,size_t len,
 153                         const AES_KEY *key1, const AES_KEY *key2,
 154                         const unsigned char iv[16]);
 155 void AES_xts_decrypt(const char *inp,char *out,size_t len,
 156                         const AES_KEY *key1, const AES_KEY *key2,
 157                         const unsigned char iv[16]);
 158 #endif
 159
 160 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 161         ((defined(__i386)       || defined(__i386__)    || \
 162           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 163         defined(__x86_64)       || defined(__x86_64__)  || \
 164         defined(_M_AMD64)       || defined(_M_X64)      || \
 165         defined(__INTEL__)                              )
 166
 167 extern unsigned int OPENSSL_ia32cap_P[2];
 168
 169 #ifdef VPAES_ASM
 170 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 171 #endif
 172 #ifdef BSAES_ASM
 173 #define BSAES_CAPABLE   VPAES_CAPABLE
 174 #endif
 175 /*
 176  * AES-NI section
 177  */
 178 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 179
 180 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 181                         AES_KEY *key);
 182 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 183                         AES_KEY *key);
 184
 185 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 186                         const AES_KEY *key);
 187 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 188                         const AES_KEY *key);
 189
 190 void aesni_ecb_encrypt(const unsigned char *in,
 191                         unsigned char *out,
 192                         size_t length,
 193                         const AES_KEY *key,
 194                         int enc);
 195 void aesni_cbc_encrypt(const unsigned char *in,
 196                         unsigned char *out,
 197                         size_t length,
 198                         const AES_KEY *key,
 199                         unsigned char *ivec, int enc);
 200
 201 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 202                         unsigned char *out,
 203                         size_t blocks,
 204                         const void *key,
 205                         const unsigned char *ivec);
 206
 207 void aesni_xts_encrypt(const unsigned char *in,
 208                         unsigned char *out,
 209                         size_t length,
 210                         const AES_KEY *key1, const AES_KEY *key2,
 211                         const unsigned char iv[16]);
 212
 213 void aesni_xts_decrypt(const unsigned char *in,
 214                         unsigned char *out,
 215                         size_t length,
 216                         const AES_KEY *key1, const AES_KEY *key2,
 217                         const unsigned char iv[16]);
 218
 219 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 220                         unsigned char *out,
 221                         size_t blocks,
 222                         const void *key,
 223                         const unsigned char ivec[16],
 224                         unsigned char cmac[16]);
 225
 226 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 227                         unsigned char *out,
 228                         size_t blocks,
 229                         const void *key,
 230                         const unsigned char ivec[16],
 231                         unsigned char cmac[16]);
 232
 233 #if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
 234 size_t aesni_gcm_encrypt(const unsigned char *in,
 235                         unsigned char *out,
 236                         size_t len,
 237                         const void *key,
 238                         unsigned char ivec[16],
 239                         u64 *Xi);
 240 #define AES_gcm_encrypt aesni_gcm_encrypt
 241 size_t aesni_gcm_decrypt(const unsigned char *in,
 242                         unsigned char *out,
 243                         size_t len,
 244                         const void *key,
 245                         unsigned char ivec[16],
 246                         u64 *Xi);
 247 #define AES_gcm_decrypt aesni_gcm_decrypt
 248 void gcm_ghash_avx(u64 Xi[2],const u128 Htable[16],const u8 *in,size_t len);
 249 #define AES_GCM_ASM(gctx)       (gctx->ctr==aesni_ctr32_encrypt_blocks && \
 250                                  gctx->gcm.ghash==gcm_ghash_avx)
 251 #define AES_GCM_ASM2(gctx)      (gctx->gcm.block==(block128_f)aesni_encrypt && \
 252                                  gctx->gcm.ghash==gcm_ghash_avx)
 253 #undef AES_GCM_ASM2             /* minor size optimization */
 254 #endif
 255
 256 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 257                    const unsigned char *iv, int enc)
 258         {
 259         int ret, mode;
 260         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 261
 262         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 263         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 264             && !enc)
 265                 {
 266                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 267                 dat->block      = (block128_f)aesni_decrypt;
 268                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 269                                         (cbc128_f)aesni_cbc_encrypt :
 270                                         NULL;
 271                 }
 272         else    {
 273                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 274                 dat->block      = (block128_f)aesni_encrypt;
 275                 if (mode==EVP_CIPH_CBC_MODE)
 276                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 277                 else if (mode==EVP_CIPH_CTR_MODE)
 278                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 279                 else
 280                         dat->stream.cbc = NULL;
 281                 }
 282
 283         if(ret < 0)
 284                 {
 285                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 286                 return 0;
 287                 }
 288
 289         return 1;
 290         }
 291
 292 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 293         const unsigned char *in, size_t len)
 294 {
 295         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 296
 297         return 1;
 298 }
 299
 300 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 301         const unsigned char *in, size_t len)
 302 {
 303         size_t  bl = ctx->cipher->block_size;
 304
 305         if (len<bl)     return 1;
 306
 307         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 308
 309         return 1;
 310 }
 311
 312 #define aesni_ofb_cipher aes_ofb_cipher
 313 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 314         const unsigned char *in,size_t len);
 315
 316 #define aesni_cfb_cipher aes_cfb_cipher
 317 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 318         const unsigned char *in,size_t len);
 319
 320 #define aesni_cfb8_cipher aes_cfb8_cipher
 321 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 322         const unsigned char *in,size_t len);
 323
 324 #define aesni_cfb1_cipher aes_cfb1_cipher
 325 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 326         const unsigned char *in,size_t len);
 327
 328 #define aesni_ctr_cipher aes_ctr_cipher
 329 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 330                 const unsigned char *in, size_t len);
 331
 332 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 333                         const unsigned char *iv, int enc)
 334         {
 335         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 336         if (!iv && !key)
 337                 return 1;
 338         if (key)
 339                 {
 340                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 341                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 342                                 (block128_f)aesni_encrypt);
 343                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 344                 /* If we have an iv can set it directly, otherwise use
 345                  * saved IV.
 346                  */
 347                 if (iv == NULL && gctx->iv_set)
 348                         iv = gctx->iv;
 349                 if (iv)
 350                         {
 351                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 352                         gctx->iv_set = 1;
 353                         }
 354                 gctx->key_set = 1;
 355                 }
 356         else
 357                 {
 358                 /* If key set use IV, otherwise copy */
 359                 if (gctx->key_set)
 360                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 361                 else
 362                         memcpy(gctx->iv, iv, gctx->ivlen);
 363                 gctx->iv_set = 1;
 364                 gctx->iv_gen = 0;
 365                 }
 366         return 1;
 367         }
 368
 369 #define aesni_gcm_cipher aes_gcm_cipher
 370 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 371                 const unsigned char *in, size_t len);
 372
 373 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 374                         const unsigned char *iv, int enc)
 375         {
 376         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 377         if (!iv && !key)
 378                 return 1;
 379
 380         if (key)
 381                 {
 382                 /* key_len is two AES keys */
 383                 if (enc)
 384                         {
 385                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 386                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 387                         xctx->stream = aesni_xts_encrypt;
 388                         }
 389                 else
 390                         {
 391                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
 392                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 393                         xctx->stream = aesni_xts_decrypt;
 394                         }
 395
 396                 aesni_set_encrypt_key(key + ctx->key_len/2,
 397                                                 ctx->key_len * 4, &xctx->ks2);
 398                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 399
 400                 xctx->xts.key1 = &xctx->ks1;
 401                 }
 402
 403         if (iv)
 404                 {
 405                 xctx->xts.key2 = &xctx->ks2;
 406                 memcpy(ctx->iv, iv, 16);
 407                 }
 408
 409         return 1;
 410         }
 411
 412 #define aesni_xts_cipher aes_xts_cipher
 413 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 414                 const unsigned char *in, size_t len);
 415
 416 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 417                         const unsigned char *iv, int enc)
 418         {
 419         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 420         if (!iv && !key)
 421                 return 1;
 422         if (key)
 423                 {
 424                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
 425                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 426                                         &cctx->ks, (block128_f)aesni_encrypt);
 427                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 428                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 429                 cctx->key_set = 1;
 430                 }
 431         if (iv)
 432                 {
 433                 memcpy(ctx->iv, iv, 15 - cctx->L);
 434                 cctx->iv_set = 1;
 435                 }
 436         return 1;
 437         }
 438
 439 #define aesni_ccm_cipher aes_ccm_cipher
 440 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 441                 const unsigned char *in, size_t len);
 442
 443 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 444 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 445         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 446         flags|EVP_CIPH_##MODE##_MODE,   \
 447         aesni_init_key,                 \
 448         aesni_##mode##_cipher,          \
 449         NULL,                           \
 450         sizeof(EVP_AES_KEY),            \
 451         NULL,NULL,NULL,NULL }; \
 452 static const EVP_CIPHER aes_##keylen##_##mode = { \
 453         nid##_##keylen##_##nmode,blocksize,     \
 454         keylen/8,ivlen, \
 455         flags|EVP_CIPH_##MODE##_MODE,   \
 456         aes_init_key,                   \
 457         aes_##mode##_cipher,            \
 458         NULL,                           \
 459         sizeof(EVP_AES_KEY),            \
 460         NULL,NULL,NULL,NULL }; \
 461 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 462 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 463
 464 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 465 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 466         nid##_##keylen##_##mode,blocksize, \
 467         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 468         flags|EVP_CIPH_##MODE##_MODE,   \
 469         aesni_##mode##_init_key,        \
 470         aesni_##mode##_cipher,          \
 471         aes_##mode##_cleanup,           \
 472         sizeof(EVP_AES_##MODE##_CTX),   \
 473         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 474 static const EVP_CIPHER aes_##keylen##_##mode = { \
 475         nid##_##keylen##_##mode,blocksize, \
 476         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 477         flags|EVP_CIPH_##MODE##_MODE,   \
 478         aes_##mode##_init_key,          \
 479         aes_##mode##_cipher,            \
 480         aes_##mode##_cleanup,           \
 481         sizeof(EVP_AES_##MODE##_CTX),   \
 482         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 483 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 484 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 485
 486 #else
 487
 488 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 489 static const EVP_CIPHER aes_##keylen##_##mode = { \
 490         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 491         flags|EVP_CIPH_##MODE##_MODE,   \
 492         aes_init_key,                   \
 493         aes_##mode##_cipher,            \
 494         NULL,                           \
 495         sizeof(EVP_AES_KEY),            \
 496         NULL,NULL,NULL,NULL }; \
 497 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 498 { return &aes_##keylen##_##mode; }
 499
 500 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 501 static const EVP_CIPHER aes_##keylen##_##mode = { \
 502         nid##_##keylen##_##mode,blocksize, \
 503         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 504         flags|EVP_CIPH_##MODE##_MODE,   \
 505         aes_##mode##_init_key,          \
 506         aes_##mode##_cipher,            \
 507         aes_##mode##_cleanup,           \
 508         sizeof(EVP_AES_##MODE##_CTX),   \
 509         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 510 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 511 { return &aes_##keylen##_##mode; }
 512 #endif
 513
 514 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 515         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 516         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 517         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 518         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 519         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 520         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 521         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 522
 523 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 524                    const unsigned char *iv, int enc)
 525         {
 526         int ret, mode;
 527         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 528
 529         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 530         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 531             && !enc)
 532 #ifdef BSAES_CAPABLE
 533             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 534                 {
 535                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 536                 dat->block      = (block128_f)AES_decrypt;
 537                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 538                 }
 539             else
 540 #endif
 541 #ifdef VPAES_CAPABLE
 542             if (VPAES_CAPABLE)
 543                 {
 544                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 545                 dat->block      = (block128_f)vpaes_decrypt;
 546                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 547                                         (cbc128_f)vpaes_cbc_encrypt :
 548                                         NULL;
 549                 }
 550             else
 551 #endif
 552                 {
 553                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
 554                 dat->block      = (block128_f)AES_decrypt;
 555                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 556                                         (cbc128_f)AES_cbc_encrypt :
 557                                         NULL;
 558                 }
 559         else
 560 #ifdef BSAES_CAPABLE
 561             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 562                 {
 563                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 564                 dat->block      = (block128_f)AES_encrypt;
 565                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 566                 }
 567             else
 568 #endif
 569 #ifdef VPAES_CAPABLE
 570             if (VPAES_CAPABLE)
 571                 {
 572                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 573                 dat->block      = (block128_f)vpaes_encrypt;
 574                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 575                                         (cbc128_f)vpaes_cbc_encrypt :
 576                                         NULL;
 577                 }
 578             else
 579 #endif
 580                 {
 581                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
 582                 dat->block      = (block128_f)AES_encrypt;
 583                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 584                                         (cbc128_f)AES_cbc_encrypt :
 585                                         NULL;
 586 #ifdef AES_CTR_ASM
 587                 if (mode==EVP_CIPH_CTR_MODE)
 588                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 589 #endif
 590                 }
 591
 592         if(ret < 0)
 593                 {
 594                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 595                 return 0;
 596                 }
 597
 598         return 1;
 599         }
 600
 601 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 602         const unsigned char *in, size_t len)
 603 {
 604         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 605
 606         if (dat->stream.cbc)
 607                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 608         else if (ctx->encrypt)
 609                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 610         else
 611                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 612
 613         return 1;
 614 }
 615
 616 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 617         const unsigned char *in, size_t len)
 618 {
 619         size_t  bl = ctx->cipher->block_size;
 620         size_t  i;
 621         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 622
 623         if (len<bl)     return 1;
 624
 625         for (i=0,len-=bl;i<=len;i+=bl)
 626                 (*dat->block)(in+i,out+i,&dat->ks);
 627
 628         return 1;
 629 }
 630
 631 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 632         const unsigned char *in,size_t len)
 633 {
 634         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 635
 636         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
 637                         ctx->iv,&ctx->num,dat->block);
 638         return 1;
 639 }
 640
 641 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 642         const unsigned char *in,size_t len)
 643 {
 644         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 645
 646         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
 647                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 648         return 1;
 649 }
 650
 651 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 652         const unsigned char *in,size_t len)
 653 {
 654         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 655
 656         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
 657                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 658         return 1;
 659 }
 660
 661 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 662         const unsigned char *in,size_t len)
 663 {
 664         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 665
 666         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
 667                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
 668                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 669                 return 1;
 670         }
 671
 672         while (len>=MAXBITCHUNK) {
 673                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
 674                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 675                 len-=MAXBITCHUNK;
 676         }
 677         if (len)
 678                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
 679                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
 680
 681         return 1;
 682 }
 683
 684 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
 685                 const unsigned char *in, size_t len)
 686 {
 687         unsigned int num = ctx->num;
 688         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 689
 690         if (dat->stream.ctr)
 691                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
 692                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
 693         else
 694                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
 695                         ctx->iv,ctx->buf,&num,dat->block);
 696         ctx->num = (size_t)num;
 697         return 1;
 698 }
 699
 700 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
 701 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
 702 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
 703
 704 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
 705         {
 706         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 707         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
 708         if (gctx->iv != c->iv)
 709                 OPENSSL_free(gctx->iv);
 710         return 1;
 711         }
 712
 713 /* increment counter (64-bit int) by 1 */
 714 static void ctr64_inc(unsigned char *counter) {
 715         int n=8;
 716         unsigned char  c;
 717
 718         do {
 719                 --n;
 720                 c = counter[n];
 721                 ++c;
 722                 counter[n] = c;
 723                 if (c) return;
 724         } while (n);
 725 }
 726
 727 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
 728         {
 729         EVP_AES_GCM_CTX *gctx = c->cipher_data;
 730         switch (type)
 731                 {
 732         case EVP_CTRL_INIT:
 733                 gctx->key_set = 0;
 734                 gctx->iv_set = 0;
 735                 gctx->ivlen = c->cipher->iv_len;
 736                 gctx->iv = c->iv;
 737                 gctx->taglen = -1;
 738                 gctx->iv_gen = 0;
 739                 gctx->tls_aad_len = -1;
 740                 return 1;
 741
 742         case EVP_CTRL_GCM_SET_IVLEN:
 743                 if (arg <= 0)
 744                         return 0;
 745 #ifdef OPENSSL_FIPSCANISTER
 746                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
 747                                                  && arg < 12)
 748                         return 0;
 749 #endif
 750                 /* Allocate memory for IV if needed */
 751                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
 752                         {
 753                         if (gctx->iv != c->iv)
 754                                 OPENSSL_free(gctx->iv);
 755                         gctx->iv = OPENSSL_malloc(arg);
 756                         if (!gctx->iv)
 757                                 return 0;
 758                         }
 759                 gctx->ivlen = arg;
 760                 return 1;
 761
 762         case EVP_CTRL_GCM_SET_TAG:
 763                 if (arg <= 0 || arg > 16 || c->encrypt)
 764                         return 0;
 765                 memcpy(c->buf, ptr, arg);
 766                 gctx->taglen = arg;
 767                 return 1;
 768
 769         case EVP_CTRL_GCM_GET_TAG:
 770                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
 771                         return 0;
 772                 memcpy(ptr, c->buf, arg);
 773                 return 1;
 774
 775         case EVP_CTRL_GCM_SET_IV_FIXED:
 776                 /* Special case: -1 length restores whole IV */
 777                 if (arg == -1)
 778                         {
 779                         memcpy(gctx->iv, ptr, gctx->ivlen);
 780                         gctx->iv_gen = 1;
 781                         return 1;
 782                         }
 783                 /* Fixed field must be at least 4 bytes and invocation field
 784                  * at least 8.
 785                  */
 786                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
 787                         return 0;
 788                 if (arg)
 789                         memcpy(gctx->iv, ptr, arg);
 790                 if (c->encrypt &&
 791                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
 792                         return 0;
 793                 gctx->iv_gen = 1;
 794                 return 1;
 795
 796         case EVP_CTRL_GCM_IV_GEN:
 797                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
 798                         return 0;
 799                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 800                 if (arg <= 0 || arg > gctx->ivlen)
 801                         arg = gctx->ivlen;
 802                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
 803                 /* Invocation field will be at least 8 bytes in size and
 804                  * so no need to check wrap around or increment more than
 805                  * last 8 bytes.
 806                  */
 807                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
 808                 gctx->iv_set = 1;
 809                 return 1;
 810
 811         case EVP_CTRL_GCM_SET_IV_INV:
 812                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
 813                         return 0;
 814                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
 815                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
 816                 gctx->iv_set = 1;
 817                 return 1;
 818
 819         case EVP_CTRL_AEAD_TLS1_AAD:
 820                 /* Save the AAD for later use */
 821                 if (arg != 13)
 822                         return 0;
 823                 memcpy(c->buf, ptr, arg);
 824                 gctx->tls_aad_len = arg;
 825                         {
 826                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
 827                         /* Correct length for explicit IV */
 828                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
 829                         /* If decrypting correct for tag too */
 830                         if (!c->encrypt)
 831                                 len -= EVP_GCM_TLS_TAG_LEN;
 832                         c->buf[arg-2] = len>>8;
 833                         c->buf[arg-1] = len & 0xff;
 834                         }
 835                 /* Extra padding: tag appended to record */
 836                 return EVP_GCM_TLS_TAG_LEN;
 837
 838         default:
 839                 return -1;
 840
 841                 }
 842         }
 843
 844 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 845                         const unsigned char *iv, int enc)
 846         {
 847         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 848         if (!iv && !key)
 849                 return 1;
 850         if (key)
 851                 { do {
 852 #ifdef BSAES_CAPABLE
 853                 if (BSAES_CAPABLE)
 854                         {
 855                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 856                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 857                                         (block128_f)AES_encrypt);
 858                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 859                         break;
 860                         }
 861                 else
 862 #endif
 863 #ifdef VPAES_CAPABLE
 864                 if (VPAES_CAPABLE)
 865                         {
 866                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
 867                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
 868                                         (block128_f)vpaes_encrypt);
 869                         gctx->ctr = NULL;
 870                         break;
 871                         }
 872 #endif
 873                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
 874                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
 875 #ifdef AES_CTR_ASM
 876                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
 877 #else
 878                 gctx->ctr = NULL;
 879 #endif
 880                 } while (0);
 881
 882                 /* If we have an iv can set it directly, otherwise use
 883                  * saved IV.
 884                  */
 885                 if (iv == NULL && gctx->iv_set)
 886                         iv = gctx->iv;
 887                 if (iv)
 888                         {
 889                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 890                         gctx->iv_set = 1;
 891                         }
 892                 gctx->key_set = 1;
 893                 }
 894         else
 895                 {
 896                 /* If key set use IV, otherwise copy */
 897                 if (gctx->key_set)
 898                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 899                 else
 900                         memcpy(gctx->iv, iv, gctx->ivlen);
 901                 gctx->iv_set = 1;
 902                 gctx->iv_gen = 0;
 903                 }
 904         return 1;
 905         }
 906
 907 /* Handle TLS GCM packet format. This consists of the last portion of the IV
 908  * followed by the payload and finally the tag. On encrypt generate IV,
 909  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
 910  * and verify tag.
 911  */
 912
 913 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 914                 const unsigned char *in, size_t len)
 915         {
 916         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 917         int rv = -1;
 918         /* Encrypt/decrypt must be performed in place */
 919         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
 920                 return -1;
 921         /* Set IV from start of buffer or generate IV and write to start
 922          * of buffer.
 923          */
 924         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
 925                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
 926                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
 927                 goto err;
 928         /* Use saved AAD */
 929         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
 930                 goto err;
 931         /* Fix buffer and length to point to payload */
 932         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 933         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
 934         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 935         if (ctx->encrypt)
 936                 {
 937                 /* Encrypt payload */
 938                 if (gctx->ctr)
 939                         {
 940                         size_t bulk=0;
 941 #if defined(AES_GCM_ASM)
 942                         if (len>=32 && AES_GCM_ASM(gctx))
 943                                 {
 944                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
 945                                         return -1;
 946
 947                                 bulk = AES_gcm_encrypt(in,out,len,
 948                                                         gctx->gcm.key,
 949                                                         gctx->gcm.Yi.c,
 950                                                         gctx->gcm.Xi.u);
 951                                 gctx->gcm.len.u[1] += bulk;
 952                                 }
 953 #endif
 954                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
 955                                                         in +bulk,
 956                                                         out+bulk,
 957                                                         len-bulk,
 958                                                         gctx->ctr))
 959                                 goto err;
 960                         }
 961                 else    {
 962                         size_t bulk=0;
 963 #if defined(AES_GCM_ASM2)
 964                         if (len>=32 && AES_GCM_ASM2(gctx))
 965                                 {
 966                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
 967                                         return -1;
 968
 969                                 bulk = AES_gcm_encrypt(in,out,len,
 970                                                         gctx->gcm.key,
 971                                                         gctx->gcm.Yi.c,
 972                                                         gctx->gcm.Xi.u);
 973                                 gctx->gcm.len.u[1] += bulk;
 974                                 }
 975 #endif
 976                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
 977                                                         in +bulk,
 978                                                         out+bulk,
 979                                                         len-bulk))
 980                                 goto err;
 981                         }
 982                 out += len;
 983                 /* Finally write tag */
 984                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
 985                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
 986                 }
 987         else
 988                 {
 989                 /* Decrypt */
 990                 if (gctx->ctr)
 991                         {
 992                         size_t bulk=0;
 993 #if defined(AES_GCM_ASM)
 994                         if (len>=16 && AES_GCM_ASM(gctx))
 995                                 {
 996                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
 997                                         return -1;
 998
 999                                 bulk = AES_gcm_decrypt(in,out,len,
1000                                                         gctx->gcm.key,
1001                                                         gctx->gcm.Yi.c,
1002                                                         gctx->gcm.Xi.u);
1003                                 gctx->gcm.len.u[1] += bulk;
1004                                 }
1005 #endif
1006                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1007                                                         in +bulk,
1008                                                         out+bulk,
1009                                                         len-bulk,
1010                                                         gctx->ctr))
1011                                 goto err;
1012                         }
1013                 else    {
1014                         size_t bulk=0;
1015 #if defined(AES_GCM_ASM2)
1016                         if (len>=16 && AES_GCM_ASM2(gctx))
1017                                 {
1018                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1019                                         return -1;
1020
1021                                 bulk = AES_gcm_decrypt(in,out,len,
1022                                                         gctx->gcm.key,
1023                                                         gctx->gcm.Yi.c,
1024                                                         gctx->gcm.Xi.u);
1025                                 gctx->gcm.len.u[1] += bulk;
1026                                 }
1027 #endif
1028                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1029                                                         in +bulk,
1030                                                         out+bulk,
1031                                                         len-bulk))
1032                                 goto err;
1033                         }
1034                 /* Retrieve tag */
1035                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1036                                         EVP_GCM_TLS_TAG_LEN);
1037                 /* If tag mismatch wipe buffer */
1038                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1039                         {
1040                         OPENSSL_cleanse(out, len);
1041                         goto err;
1042                         }
1043                 rv = len;
1044                 }
1045
1046         err:
1047         gctx->iv_set = 0;
1048         gctx->tls_aad_len = -1;
1049         return rv;
1050         }
1051
1052 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1053                 const unsigned char *in, size_t len)
1054         {
1055         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1056         /* If not set up, return error */
1057         if (!gctx->key_set)
1058                 return -1;
1059
1060         if (gctx->tls_aad_len >= 0)
1061                 return aes_gcm_tls_cipher(ctx, out, in, len);
1062
1063         if (!gctx->iv_set)
1064                 return -1;
1065         if (in)
1066                 {
1067                 if (out == NULL)
1068                         {
1069                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1070                                 return -1;
1071                         }
1072                 else if (ctx->encrypt)
1073                         {
1074                         if (gctx->ctr)
1075                                 {
1076                                 size_t bulk=0;
1077 #if defined(AES_GCM_ASM)
1078                                 if (len>=32 && AES_GCM_ASM(gctx))
1079                                         {
1080                                         size_t res = (16-gctx->gcm.mres)%16;
1081
1082                                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1083                                                         in,out,res))
1084                                                 return -1;
1085
1086                                         bulk = AES_gcm_encrypt(in+res,
1087                                                         out+res,len-res,                                                                gctx->gcm.key,
1088                                                         gctx->gcm.Yi.c,
1089                                                         gctx->gcm.Xi.u);
1090                                         gctx->gcm.len.u[1] += bulk;
1091                                         bulk += res;
1092                                         }
1093 #endif
1094                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1095                                                         in +bulk,
1096                                                         out+bulk,
1097                                                         len-bulk,
1098                                                         gctx->ctr))
1099                                         return -1;
1100                                 }
1101                         else    {
1102                                 size_t bulk=0;
1103 #if defined(AES_GCM_ASM2)
1104                                 if (len>=32 && AES_GCM_ASM2(gctx))
1105                                         {
1106                                         size_t res = (16-gctx->gcm.mres)%16;
1107
1108                                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1109                                                         in,out,res))
1110                                                 return -1;
1111
1112                                         bulk = AES_gcm_encrypt(in+res,
1113                                                         out+res,len-res,                                                                gctx->gcm.key,
1114                                                         gctx->gcm.Yi.c,
1115                                                         gctx->gcm.Xi.u);
1116                                         gctx->gcm.len.u[1] += bulk;
1117                                         bulk += res;
1118                                         }
1119 #endif
1120                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1121                                                         in +bulk,
1122                                                         out+bulk,
1123                                                         len-bulk))
1124                                         return -1;
1125                                 }
1126                         }
1127                 else
1128                         {
1129                         if (gctx->ctr)
1130                                 {
1131                                 size_t bulk=0;
1132 #if defined(AES_GCM_ASM)
1133                                 if (len>=16 && AES_GCM_ASM(gctx))
1134                                         {
1135                                         size_t res = (16-gctx->gcm.mres)%16;
1136
1137                                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1138                                                         in,out,res))
1139                                                 return -1;
1140
1141                                         bulk = AES_gcm_decrypt(in+res,
1142                                                         out+res,len-res,
1143                                                         gctx->gcm.key,
1144                                                         gctx->gcm.Yi.c,
1145                                                         gctx->gcm.Xi.u);
1146                                         gctx->gcm.len.u[1] += bulk;
1147                                         bulk += res;
1148                                         }
1149 #endif
1150                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1151                                                         in +bulk,
1152                                                         out+bulk,
1153                                                         len-bulk,
1154                                                         gctx->ctr))
1155                                         return -1;
1156                                 }
1157                         else    {
1158                                 size_t bulk=0;
1159 #if defined(AES_GCM_ASM2)
1160                                 if (len>=16 && AES_GCM_ASM2(gctx))
1161                                         {
1162                                         size_t res = (16-gctx->gcm.mres)%16;
1163
1164                                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1165                                                         in,out,res))
1166                                                 return -1;
1167
1168                                         bulk = AES_gcm_decrypt(in+res,
1169                                                         out+res,len-res,
1170                                                         gctx->gcm.key,
1171                                                         gctx->gcm.Yi.c,
1172                                                         gctx->gcm.Xi.u);
1173                                         gctx->gcm.len.u[1] += bulk;
1174                                         bulk += res;
1175                                         }
1176 #endif
1177                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1178                                                         in +bulk,
1179                                                         out+bulk,
1180                                                         len-bulk))
1181                                         return -1;
1182                                 }
1183                         }
1184                 return len;
1185                 }
1186         else
1187                 {
1188                 if (!ctx->encrypt)
1189                         {
1190                         if (gctx->taglen < 0)
1191                                 return -1;
1192                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1193                                         ctx->buf, gctx->taglen) != 0)
1194                                 return -1;
1195                         gctx->iv_set = 0;
1196                         return 0;
1197                         }
1198                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1199                 gctx->taglen = 16;
1200                 /* Don't reuse the IV */
1201                 gctx->iv_set = 0;
1202                 return 0;
1203                 }
1204
1205         }
1206
1207 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1208                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1209                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1210
1211 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1212                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1213 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1214                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1215 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1216                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1217
1218 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1219         {
1220         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1221         if (type != EVP_CTRL_INIT)
1222                 return -1;
1223         /* key1 and key2 are used as an indicator both key and IV are set */
1224         xctx->xts.key1 = NULL;
1225         xctx->xts.key2 = NULL;
1226         return 1;
1227         }
1228
1229 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1230                         const unsigned char *iv, int enc)
1231         {
1232         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1233         if (!iv && !key)
1234                 return 1;
1235
1236         if (key) do
1237                 {
1238 #ifdef AES_XTS_ASM
1239                 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1240 #else
1241                 xctx->stream = NULL;
1242 #endif
1243                 /* key_len is two AES keys */
1244 #ifdef BSAES_CAPABLE
1245                 if (BSAES_CAPABLE)
1246                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1247                 else
1248 #endif
1249 #ifdef VPAES_CAPABLE
1250                 if (VPAES_CAPABLE)
1251                     {
1252                     if (enc)
1253                         {
1254                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1255                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1256                         }
1257                     else
1258                         {
1259                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1260                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1261                         }
1262
1263                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1264                                                 ctx->key_len * 4, &xctx->ks2);
1265                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1266
1267                 xctx->xts.key1 = &xctx->ks1;
1268                 break;
1269                 }
1270 #endif
1271                 if (enc)
1272                         {
1273                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1274                         xctx->xts.block1 = (block128_f)AES_encrypt;
1275                         }
1276                 else
1277                         {
1278                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1279                         xctx->xts.block1 = (block128_f)AES_decrypt;
1280                         }
1281
1282                 AES_set_encrypt_key(key + ctx->key_len/2,
1283                                                 ctx->key_len * 4, &xctx->ks2);
1284                 xctx->xts.block2 = (block128_f)AES_encrypt;
1285
1286                 xctx->xts.key1 = &xctx->ks1;
1287                 } while (0);
1288
1289         if (iv)
1290                 {
1291                 xctx->xts.key2 = &xctx->ks2;
1292                 memcpy(ctx->iv, iv, 16);
1293                 }
1294
1295         return 1;
1296         }
1297
1298 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1299                 const unsigned char *in, size_t len)
1300         {
1301         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1302         if (!xctx->xts.key1 || !xctx->xts.key2)
1303                 return 0;
1304         if (!out || !in || len<AES_BLOCK_SIZE)
1305                 return 0;
1306 #ifdef OPENSSL_FIPSCANISTER
1307         /* Requirement of SP800-38E */
1308         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1309                         (len > (1UL<<20)*16))
1310                 {
1311                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1312                 return 0;
1313                 }
1314 #endif
1315         if (xctx->stream)
1316                 (*xctx->stream)(in, out, len,
1317                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1318         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1319                                                                 ctx->encrypt))
1320                 return 0;
1321         return 1;
1322         }
1323
1324 #define aes_xts_cleanup NULL
1325
1326 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1327                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1328
1329 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1330 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1331
1332 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1333         {
1334         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1335         switch (type)
1336                 {
1337         case EVP_CTRL_INIT:
1338                 cctx->key_set = 0;
1339                 cctx->iv_set = 0;
1340                 cctx->L = 8;
1341                 cctx->M = 12;
1342                 cctx->tag_set = 0;
1343                 cctx->len_set = 0;
1344                 return 1;
1345
1346         case EVP_CTRL_CCM_SET_IVLEN:
1347                 arg = 15 - arg;
1348         case EVP_CTRL_CCM_SET_L:
1349                 if (arg < 2 || arg > 8)
1350                         return 0;
1351                 cctx->L = arg;
1352                 return 1;
1353
1354         case EVP_CTRL_CCM_SET_TAG:
1355                 if ((arg & 1) || arg < 4 || arg > 16)
1356                         return 0;
1357                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1358                         return 0;
1359                 if (ptr)
1360                         {
1361                         cctx->tag_set = 1;
1362                         memcpy(c->buf, ptr, arg);
1363                         }
1364                 cctx->M = arg;
1365                 return 1;
1366
1367         case EVP_CTRL_CCM_GET_TAG:
1368                 if (!c->encrypt || !cctx->tag_set)
1369                         return 0;
1370                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1371                         return 0;
1372                 cctx->tag_set = 0;
1373                 cctx->iv_set = 0;
1374                 cctx->len_set = 0;
1375                 return 1;
1376
1377         default:
1378                 return -1;
1379
1380                 }
1381         }
1382
1383 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1384                         const unsigned char *iv, int enc)
1385         {
1386         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1387         if (!iv && !key)
1388                 return 1;
1389         if (key) do
1390                 {
1391 #ifdef VPAES_CAPABLE
1392                 if (VPAES_CAPABLE)
1393                         {
1394                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1395                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1396                                         &cctx->ks, (block128_f)vpaes_encrypt);
1397                         cctx->str = NULL;
1398                         cctx->key_set = 1;
1399                         break;
1400                         }
1401 #endif
1402                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1403                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1404                                         &cctx->ks, (block128_f)AES_encrypt);
1405                 cctx->str = NULL;
1406                 cctx->key_set = 1;
1407                 } while (0);
1408         if (iv)
1409                 {
1410                 memcpy(ctx->iv, iv, 15 - cctx->L);
1411                 cctx->iv_set = 1;
1412                 }
1413         return 1;
1414         }
1415
1416 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1417                 const unsigned char *in, size_t len)
1418         {
1419         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1420         CCM128_CONTEXT *ccm = &cctx->ccm;
1421         /* If not set up, return error */
1422         if (!cctx->iv_set && !cctx->key_set)
1423                 return -1;
1424         if (!ctx->encrypt && !cctx->tag_set)
1425                 return -1;
1426         if (!out)
1427                 {
1428                 if (!in)
1429                         {
1430                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1431                                 return -1;
1432                         cctx->len_set = 1;
1433                         return len;
1434                         }
1435                 /* If have AAD need message length */
1436                 if (!cctx->len_set && len)
1437                         return -1;
1438                 CRYPTO_ccm128_aad(ccm, in, len);
1439                 return len;
1440                 }
1441         /* EVP_*Final() doesn't return any data */
1442         if (!in)
1443                 return 0;
1444         /* If not set length yet do it */
1445         if (!cctx->len_set)
1446                 {
1447                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1448                         return -1;
1449                 cctx->len_set = 1;
1450                 }
1451         if (ctx->encrypt)
1452                 {
1453                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1454                                                 cctx->str) :
1455                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1456                         return -1;
1457                 cctx->tag_set = 1;
1458                 return len;
1459                 }
1460         else
1461                 {
1462                 int rv = -1;
1463                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1464                                                 cctx->str) :
1465                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1466                         {
1467                         unsigned char tag[16];
1468                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1469                                 {
1470                                 if (!memcmp(tag, ctx->buf, cctx->M))
1471                                         rv = len;
1472                                 }
1473                         }
1474                 if (rv == -1)
1475                         OPENSSL_cleanse(out, len);
1476                 cctx->iv_set = 0;
1477                 cctx->tag_set = 0;
1478                 cctx->len_set = 0;
1479                 return rv;
1480                 }
1481
1482         }
1483
1484 #define aes_ccm_cleanup NULL
1485
1486 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1487 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1488 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1489
1490 #endif