crypto/evp/e_aes.c

   1 /* ====================================================================
   2  * Copyright (c) 2001-2011 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  * ====================================================================
  48  *
  49  */
  50
  51 #define OPENSSL_FIPSAPI
  52
  53 #include <openssl/opensslconf.h>
  54 #ifndef OPENSSL_NO_AES
  55 #include <openssl/evp.h>
  56 #include <openssl/err.h>
  57 #include <string.h>
  58 #include <assert.h>
  59 #include <openssl/aes.h>
  60 #include "evp_locl.h"
  61 #include "modes_lcl.h"
  62 #include <openssl/rand.h>
  63
  64 typedef struct
  65         {
  66         union { double align; AES_KEY ks; } 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         union { double align; AES_KEY ks; } 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         union { double align; AES_KEY ks; } 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         union { double align; AES_KEY ks; } 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[];
 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   VPAES_CAPABLE
 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 #if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
 231 size_t aesni_gcm_encrypt(const unsigned char *in,
 232                         unsigned char *out,
 233                         size_t len,
 234                         const void *key,
 235                         unsigned char ivec[16],
 236                         u64 *Xi);
 237 #define AES_gcm_encrypt aesni_gcm_encrypt
 238 size_t aesni_gcm_decrypt(const unsigned char *in,
 239                         unsigned char *out,
 240                         size_t len,
 241                         const void *key,
 242                         unsigned char ivec[16],
 243                         u64 *Xi);
 244 #define AES_gcm_decrypt aesni_gcm_decrypt
 245 void gcm_ghash_avx(u64 Xi[2],const u128 Htable[16],const u8 *in,size_t len);
 246 #define AES_GCM_ASM(gctx)       (gctx->ctr==aesni_ctr32_encrypt_blocks && \
 247                                  gctx->gcm.ghash==gcm_ghash_avx)
 248 #define AES_GCM_ASM2(gctx)      (gctx->gcm.block==(block128_f)aesni_encrypt && \
 249                                  gctx->gcm.ghash==gcm_ghash_avx)
 250 #undef AES_GCM_ASM2             /* minor size optimization */
 251 #endif
 252
 253 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 254                    const unsigned char *iv, int enc)
 255         {
 256         int ret, mode;
 257         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 258
 259         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 260         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 261             && !enc)
 262                 {
 263                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 264                 dat->block      = (block128_f)aesni_decrypt;
 265                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 266                                         (cbc128_f)aesni_cbc_encrypt :
 267                                         NULL;
 268                 }
 269         else    {
 270                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 271                 dat->block      = (block128_f)aesni_encrypt;
 272                 if (mode==EVP_CIPH_CBC_MODE)
 273                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 274                 else if (mode==EVP_CIPH_CTR_MODE)
 275                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 276                 else
 277                         dat->stream.cbc = NULL;
 278                 }
 279
 280         if(ret < 0)
 281                 {
 282                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 283                 return 0;
 284                 }
 285
 286         return 1;
 287         }
 288
 289 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 290         const unsigned char *in, size_t len)
 291 {
 292         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 293
 294         return 1;
 295 }
 296
 297 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 298         const unsigned char *in, size_t len)
 299 {
 300         size_t  bl = ctx->cipher->block_size;
 301
 302         if (len<bl)     return 1;
 303
 304         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 305
 306         return 1;
 307 }
 308
 309 #define aesni_ofb_cipher aes_ofb_cipher
 310 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 311         const unsigned char *in,size_t len);
 312
 313 #define aesni_cfb_cipher aes_cfb_cipher
 314 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 315         const unsigned char *in,size_t len);
 316
 317 #define aesni_cfb8_cipher aes_cfb8_cipher
 318 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 319         const unsigned char *in,size_t len);
 320
 321 #define aesni_cfb1_cipher aes_cfb1_cipher
 322 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 323         const unsigned char *in,size_t len);
 324
 325 #define aesni_ctr_cipher aes_ctr_cipher
 326 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 327                 const unsigned char *in, size_t len);
 328
 329 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 330                         const unsigned char *iv, int enc)
 331         {
 332         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 333         if (!iv && !key)
 334                 return 1;
 335         if (key)
 336                 {
 337                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
 338                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 339                                 (block128_f)aesni_encrypt);
 340                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 341                 /* If we have an iv can set it directly, otherwise use
 342                  * saved IV.
 343                  */
 344                 if (iv == NULL && gctx->iv_set)
 345                         iv = gctx->iv;
 346                 if (iv)
 347                         {
 348                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 349                         gctx->iv_set = 1;
 350                         }
 351                 gctx->key_set = 1;
 352                 }
 353         else
 354                 {
 355                 /* If key set use IV, otherwise copy */
 356                 if (gctx->key_set)
 357                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 358                 else
 359                         memcpy(gctx->iv, iv, gctx->ivlen);
 360                 gctx->iv_set = 1;
 361                 gctx->iv_gen = 0;
 362                 }
 363         return 1;
 364         }
 365
 366 #define aesni_gcm_cipher aes_gcm_cipher
 367 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 368                 const unsigned char *in, size_t len);
 369
 370 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 371                         const unsigned char *iv, int enc)
 372         {
 373         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 374         if (!iv && !key)
 375                 return 1;
 376
 377         if (key)
 378                 {
 379                 /* key_len is two AES keys */
 380                 if (enc)
 381                         {
 382                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 383                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 384                         xctx->stream = aesni_xts_encrypt;
 385                         }
 386                 else
 387                         {
 388                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 389                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 390                         xctx->stream = aesni_xts_decrypt;
 391                         }
 392
 393                 aesni_set_encrypt_key(key + ctx->key_len/2,
 394                                                 ctx->key_len * 4, &xctx->ks2.ks);
 395                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 396
 397                 xctx->xts.key1 = &xctx->ks1;
 398                 }
 399
 400         if (iv)
 401                 {
 402                 xctx->xts.key2 = &xctx->ks2;
 403                 memcpy(ctx->iv, iv, 16);
 404                 }
 405
 406         return 1;
 407         }
 408
 409 #define aesni_xts_cipher aes_xts_cipher
 410 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 411                 const unsigned char *in, size_t len);
 412
 413 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 414                         const unsigned char *iv, int enc)
 415         {
 416         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 417         if (!iv && !key)
 418                 return 1;
 419         if (key)
 420                 {
 421                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
 422                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 423                                         &cctx->ks, (block128_f)aesni_encrypt);
 424                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 425                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 426                 cctx->key_set = 1;
 427                 }
 428         if (iv)
 429                 {
 430                 memcpy(ctx->iv, iv, 15 - cctx->L);
 431                 cctx->iv_set = 1;
 432                 }
 433         return 1;
 434         }
 435
 436 #define aesni_ccm_cipher aes_ccm_cipher
 437 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 438                 const unsigned char *in, size_t len);
 439
 440 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 441 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 442         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 443         flags|EVP_CIPH_##MODE##_MODE,   \
 444         aesni_init_key,                 \
 445         aesni_##mode##_cipher,          \
 446         NULL,                           \
 447         sizeof(EVP_AES_KEY),            \
 448         NULL,NULL,NULL,NULL }; \
 449 static const EVP_CIPHER aes_##keylen##_##mode = { \
 450         nid##_##keylen##_##nmode,blocksize,     \
 451         keylen/8,ivlen, \
 452         flags|EVP_CIPH_##MODE##_MODE,   \
 453         aes_init_key,                   \
 454         aes_##mode##_cipher,            \
 455         NULL,                           \
 456         sizeof(EVP_AES_KEY),            \
 457         NULL,NULL,NULL,NULL }; \
 458 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 459 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 460
 461 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 462 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 463         nid##_##keylen##_##mode,blocksize, \
 464         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 465         flags|EVP_CIPH_##MODE##_MODE,   \
 466         aesni_##mode##_init_key,        \
 467         aesni_##mode##_cipher,          \
 468         aes_##mode##_cleanup,           \
 469         sizeof(EVP_AES_##MODE##_CTX),   \
 470         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 471 static const EVP_CIPHER aes_##keylen##_##mode = { \
 472         nid##_##keylen##_##mode,blocksize, \
 473         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 474         flags|EVP_CIPH_##MODE##_MODE,   \
 475         aes_##mode##_init_key,          \
 476         aes_##mode##_cipher,            \
 477         aes_##mode##_cleanup,           \
 478         sizeof(EVP_AES_##MODE##_CTX),   \
 479         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 480 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 481 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 482
 483 #elif   defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
 484
 485 #include "sparc_arch.h"
 486
 487 extern unsigned int OPENSSL_sparcv9cap_P[];
 488
 489 #define SPARC_AES_CAPABLE       (OPENSSL_sparcv9cap_P[1] & CFR_AES)
 490
 491 void    aes_t4_set_encrypt_key (const unsigned char *key, int bits,
 492                                 AES_KEY *ks);
 493 void    aes_t4_set_decrypt_key (const unsigned char *key, int bits,
 494                                 AES_KEY *ks);
 495 void    aes_t4_encrypt (const unsigned char *in, unsigned char *out,
 496                                 const AES_KEY *key);
 497 void    aes_t4_decrypt (const unsigned char *in, unsigned char *out,
 498                                 const AES_KEY *key);
 499 /*
 500  * Key-length specific subroutines were chosen for following reason.
 501  * Each SPARC T4 core can execute up to 8 threads which share core's
 502  * resources. Loading as much key material to registers allows to
 503  * minimize references to shared memory interface, as well as amount
 504  * of instructions in inner loops [much needed on T4]. But then having
 505  * non-key-length specific routines would require conditional branches
 506  * either in inner loops or on subroutines' entries. Former is hardly
 507  * acceptable, while latter means code size increase to size occupied
 508  * by multiple key-length specfic subroutines, so why fight?
 509  */
 510 void    aes128_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 511                                 size_t len, const AES_KEY *key,
 512                                 unsigned char *ivec);
 513 void    aes128_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 514                                 size_t len, const AES_KEY *key,
 515                                 unsigned char *ivec);
 516 void    aes192_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 517                                 size_t len, const AES_KEY *key,
 518                                 unsigned char *ivec);
 519 void    aes192_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 520                                 size_t len, const AES_KEY *key,
 521                                 unsigned char *ivec);
 522 void    aes256_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 523                                 size_t len, const AES_KEY *key,
 524                                 unsigned char *ivec);
 525 void    aes256_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 526                                 size_t len, const AES_KEY *key,
 527                                 unsigned char *ivec);
 528 void    aes128_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 529                                 size_t blocks, const AES_KEY *key,
 530                                 unsigned char *ivec);
 531 void    aes192_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 532                                 size_t blocks, const AES_KEY *key,
 533                                 unsigned char *ivec);
 534 void    aes256_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 535                                 size_t blocks, const AES_KEY *key,
 536                                 unsigned char *ivec);
 537 void    aes128_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
 538                                 size_t blocks, const AES_KEY *key1,
 539                                 const AES_KEY *key2, const unsigned char *ivec);
 540 void    aes128_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
 541                                 size_t blocks, const AES_KEY *key1,
 542                                 const AES_KEY *key2, const unsigned char *ivec);
 543 void    aes256_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
 544                                 size_t blocks, const AES_KEY *key1,
 545                                 const AES_KEY *key2, const unsigned char *ivec);
 546 void    aes256_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
 547                                 size_t blocks, const AES_KEY *key1,
 548                                 const AES_KEY *key2, const unsigned char *ivec);
 549
 550 static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 551                    const unsigned char *iv, int enc)
 552         {
 553         int ret, mode, bits;
 554         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 555
 556         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 557         bits = ctx->key_len*8;
 558         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 559             && !enc)
 560                 {
 561                     ret = 0;
 562                     aes_t4_set_decrypt_key(key, bits, ctx->cipher_data);
 563                     dat->block  = (block128_f)aes_t4_decrypt;
 564                     switch (bits) {
 565                     case 128:
 566                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 567                                                 (cbc128_f)aes128_t4_cbc_decrypt :
 568                                                 NULL;
 569                         break;
 570                     case 192:
 571                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 572                                                 (cbc128_f)aes192_t4_cbc_decrypt :
 573                                                 NULL;
 574                         break;
 575                     case 256:
 576                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 577                                                 (cbc128_f)aes256_t4_cbc_decrypt :
 578                                                 NULL;
 579                         break;
 580                     default:
 581                         ret = -1;
 582                     }
 583                 }
 584         else    {
 585                     ret = 0;
 586                     aes_t4_set_encrypt_key(key, bits, ctx->cipher_data);
 587                     dat->block  = (block128_f)aes_t4_encrypt;
 588                     switch (bits) {
 589                     case 128:
 590                         if (mode==EVP_CIPH_CBC_MODE)
 591                                 dat->stream.cbc = (cbc128_f)aes128_t4_cbc_encrypt;
 592                         else if (mode==EVP_CIPH_CTR_MODE)
 593                                 dat->stream.ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
 594                         else
 595                                 dat->stream.cbc = NULL;
 596                         break;
 597                     case 192:
 598                         if (mode==EVP_CIPH_CBC_MODE)
 599                                 dat->stream.cbc = (cbc128_f)aes192_t4_cbc_encrypt;
 600                         else if (mode==EVP_CIPH_CTR_MODE)
 601                                 dat->stream.ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
 602                         else
 603                                 dat->stream.cbc = NULL;
 604                         break;
 605                     case 256:
 606                         if (mode==EVP_CIPH_CBC_MODE)
 607                                 dat->stream.cbc = (cbc128_f)aes256_t4_cbc_encrypt;
 608                         else if (mode==EVP_CIPH_CTR_MODE)
 609                                 dat->stream.ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
 610                         else
 611                                 dat->stream.cbc = NULL;
 612                         break;
 613                     default:
 614                         ret = -1;
 615                     }
 616                 }
 617
 618         if(ret < 0)
 619                 {
 620                 EVPerr(EVP_F_AES_T4_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 621                 return 0;
 622                 }
 623
 624         return 1;
 625         }
 626
 627 #define aes_t4_cbc_cipher aes_cbc_cipher
 628 static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 629         const unsigned char *in, size_t len);
 630
 631 #define aes_t4_ecb_cipher aes_ecb_cipher
 632 static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 633         const unsigned char *in, size_t len);
 634
 635 #define aes_t4_ofb_cipher aes_ofb_cipher
 636 static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 637         const unsigned char *in,size_t len);
 638
 639 #define aes_t4_cfb_cipher aes_cfb_cipher
 640 static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 641         const unsigned char *in,size_t len);
 642
 643 #define aes_t4_cfb8_cipher aes_cfb8_cipher
 644 static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 645         const unsigned char *in,size_t len);
 646
 647 #define aes_t4_cfb1_cipher aes_cfb1_cipher
 648 static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 649         const unsigned char *in,size_t len);
 650
 651 #define aes_t4_ctr_cipher aes_ctr_cipher
 652 static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 653                 const unsigned char *in, size_t len);
 654
 655 static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 656                         const unsigned char *iv, int enc)
 657         {
 658         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 659         if (!iv && !key)
 660                 return 1;
 661         if (key)
 662                 {
 663                 int bits = ctx->key_len * 8;
 664                 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
 665                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 666                                 (block128_f)aes_t4_encrypt);
 667                 switch (bits) {
 668                     case 128:
 669                         gctx->ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
 670                         break;
 671                     case 192:
 672                         gctx->ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
 673                         break;
 674                     case 256:
 675                         gctx->ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
 676                         break;
 677                     default:
 678                         return 0;
 679                 }
 680                 /* If we have an iv can set it directly, otherwise use
 681                  * saved IV.
 682                  */
 683                 if (iv == NULL && gctx->iv_set)
 684                         iv = gctx->iv;
 685                 if (iv)
 686                         {
 687                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 688                         gctx->iv_set = 1;
 689                         }
 690                 gctx->key_set = 1;
 691                 }
 692         else
 693                 {
 694                 /* If key set use IV, otherwise copy */
 695                 if (gctx->key_set)
 696                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 697                 else
 698                         memcpy(gctx->iv, iv, gctx->ivlen);
 699                 gctx->iv_set = 1;
 700                 gctx->iv_gen = 0;
 701                 }
 702         return 1;
 703         }
 704
 705 #define aes_t4_gcm_cipher aes_gcm_cipher
 706 static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 707                 const unsigned char *in, size_t len);
 708
 709 static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 710                         const unsigned char *iv, int enc)
 711         {
 712         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 713         if (!iv && !key)
 714                 return 1;
 715
 716         if (key)
 717                 {
 718                 int bits = ctx->key_len * 4;
 719                 xctx->stream = NULL;
 720                 /* key_len is two AES keys */
 721                 if (enc)
 722                         {
 723                         aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
 724                         xctx->xts.block1 = (block128_f)aes_t4_encrypt;
 725                         switch (bits) {
 726                             case 128:
 727                                 xctx->stream = aes128_t4_xts_encrypt;
 728                                 break;
 729 #if 0 /* not yet */
 730                             case 192:
 731                                 xctx->stream = aes192_t4_xts_encrypt;
 732                                 break;
 733 #endif
 734                             case 256:
 735                                 xctx->stream = aes256_t4_xts_encrypt;
 736                                 break;
 737                             default:
 738                                 return 0;
 739                             }
 740                         }
 741                 else
 742                         {
 743                         aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 744                         xctx->xts.block1 = (block128_f)aes_t4_decrypt;
 745                         switch (bits) {
 746                             case 128:
 747                                 xctx->stream = aes128_t4_xts_decrypt;
 748                                 break;
 749 #if 0 /* not yet */
 750                             case 192:
 751                                 xctx->stream = aes192_t4_xts_decrypt;
 752                                 break;
 753 #endif
 754                             case 256:
 755                                 xctx->stream = aes256_t4_xts_decrypt;
 756                                 break;
 757                             default:
 758                                 return 0;
 759                             }
 760                         }
 761
 762                 aes_t4_set_encrypt_key(key + ctx->key_len/2,
 763                                                 ctx->key_len * 4, &xctx->ks2.ks);
 764                 xctx->xts.block2 = (block128_f)aes_t4_encrypt;
 765
 766                 xctx->xts.key1 = &xctx->ks1;
 767                 }
 768
 769         if (iv)
 770                 {
 771                 xctx->xts.key2 = &xctx->ks2;
 772                 memcpy(ctx->iv, iv, 16);
 773                 }
 774
 775         return 1;
 776         }
 777
 778 #define aes_t4_xts_cipher aes_xts_cipher
 779 static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 780                 const unsigned char *in, size_t len);
 781
 782 static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 783                         const unsigned char *iv, int enc)
 784         {
 785         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 786         if (!iv && !key)
 787                 return 1;
 788         if (key)
 789                 {
 790                 int bits = ctx->key_len * 8;
 791                 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
 792                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 793                                         &cctx->ks, (block128_f)aes_t4_encrypt);
 794 #if 0 /* not yet */
 795                 switch (bits) {
 796                     case 128:
 797                         cctx->str = enc?(ccm128_f)aes128_t4_ccm64_encrypt :
 798                                 (ccm128_f)ae128_t4_ccm64_decrypt;
 799                         break;
 800                     case 192:
 801                         cctx->str = enc?(ccm128_f)aes192_t4_ccm64_encrypt :
 802                                 (ccm128_f)ae192_t4_ccm64_decrypt;
 803                         break;
 804                     case 256:
 805                         cctx->str = enc?(ccm128_f)aes256_t4_ccm64_encrypt :
 806                                 (ccm128_f)ae256_t4_ccm64_decrypt;
 807                         break;
 808                     default:
 809                         return 0;
 810                     }
 811 #endif
 812                 cctx->key_set = 1;
 813                 }
 814         if (iv)
 815                 {
 816                 memcpy(ctx->iv, iv, 15 - cctx->L);
 817                 cctx->iv_set = 1;
 818                 }
 819         return 1;
 820         }
 821
 822 #define aes_t4_ccm_cipher aes_ccm_cipher
 823 static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 824                 const unsigned char *in, size_t len);
 825
 826 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 827 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
 828         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 829         flags|EVP_CIPH_##MODE##_MODE,   \
 830         aes_t4_init_key,                \
 831         aes_t4_##mode##_cipher,         \
 832         NULL,                           \
 833         sizeof(EVP_AES_KEY),            \
 834         NULL,NULL,NULL,NULL }; \
 835 static const EVP_CIPHER aes_##keylen##_##mode = { \
 836         nid##_##keylen##_##nmode,blocksize,     \
 837         keylen/8,ivlen, \
 838         flags|EVP_CIPH_##MODE##_MODE,   \
 839         aes_init_key,                   \
 840         aes_##mode##_cipher,            \
 841         NULL,                           \
 842         sizeof(EVP_AES_KEY),            \
 843         NULL,NULL,NULL,NULL }; \
 844 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 845 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
 846
 847 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 848 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
 849         nid##_##keylen##_##mode,blocksize, \
 850         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 851         flags|EVP_CIPH_##MODE##_MODE,   \
 852         aes_t4_##mode##_init_key,       \
 853         aes_t4_##mode##_cipher,         \
 854         aes_##mode##_cleanup,           \
 855         sizeof(EVP_AES_##MODE##_CTX),   \
 856         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 857 static const EVP_CIPHER aes_##keylen##_##mode = { \
 858         nid##_##keylen##_##mode,blocksize, \
 859         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 860         flags|EVP_CIPH_##MODE##_MODE,   \
 861         aes_##mode##_init_key,          \
 862         aes_##mode##_cipher,            \
 863         aes_##mode##_cleanup,           \
 864         sizeof(EVP_AES_##MODE##_CTX),   \
 865         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 866 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 867 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
 868
 869 #else
 870
 871 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 872 static const EVP_CIPHER aes_##keylen##_##mode = { \
 873         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 874         flags|EVP_CIPH_##MODE##_MODE,   \
 875         aes_init_key,                   \
 876         aes_##mode##_cipher,            \
 877         NULL,                           \
 878         sizeof(EVP_AES_KEY),            \
 879         NULL,NULL,NULL,NULL }; \
 880 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 881 { return &aes_##keylen##_##mode; }
 882
 883 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 884 static const EVP_CIPHER aes_##keylen##_##mode = { \
 885         nid##_##keylen##_##mode,blocksize, \
 886         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 887         flags|EVP_CIPH_##MODE##_MODE,   \
 888         aes_##mode##_init_key,          \
 889         aes_##mode##_cipher,            \
 890         aes_##mode##_cleanup,           \
 891         sizeof(EVP_AES_##MODE##_CTX),   \
 892         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 893 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 894 { return &aes_##keylen##_##mode; }
 895 #endif
 896
 897 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 898         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 899         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 900         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 901         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 902         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 903         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 904         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 905
 906 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 907                    const unsigned char *iv, int enc)
 908         {
 909         int ret, mode;
 910         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 911
 912         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 913         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 914             && !enc)
 915 #ifdef BSAES_CAPABLE
 916             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 917                 {
 918                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 919                 dat->block      = (block128_f)AES_decrypt;
 920                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 921                 }
 922             else
 923 #endif
 924 #ifdef VPAES_CAPABLE
 925             if (VPAES_CAPABLE)
 926                 {
 927                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 928                 dat->block      = (block128_f)vpaes_decrypt;
 929                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 930                                         (cbc128_f)vpaes_cbc_encrypt :
 931                                         NULL;
 932                 }
 933             else
 934 #endif
 935                 {
 936                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 937                 dat->block      = (block128_f)AES_decrypt;
 938                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 939                                         (cbc128_f)AES_cbc_encrypt :
 940                                         NULL;
 941                 }
 942         else
 943 #ifdef BSAES_CAPABLE
 944             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 945                 {
 946                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 947                 dat->block      = (block128_f)AES_encrypt;
 948                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 949                 }
 950             else
 951 #endif
 952 #ifdef VPAES_CAPABLE
 953             if (VPAES_CAPABLE)
 954                 {
 955                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 956                 dat->block      = (block128_f)vpaes_encrypt;
 957                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 958                                         (cbc128_f)vpaes_cbc_encrypt :
 959                                         NULL;
 960                 }
 961             else
 962 #endif
 963                 {
 964                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 965                 dat->block      = (block128_f)AES_encrypt;
 966                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 967                                         (cbc128_f)AES_cbc_encrypt :
 968                                         NULL;
 969 #ifdef AES_CTR_ASM
 970                 if (mode==EVP_CIPH_CTR_MODE)
 971                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 972 #endif
 973                 }
 974
 975         if(ret < 0)
 976                 {
 977                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 978                 return 0;
 979                 }
 980
 981         return 1;
 982         }
 983
 984 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 985         const unsigned char *in, size_t len)
 986 {
 987         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 988
 989         if (dat->stream.cbc)
 990                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
 991         else if (ctx->encrypt)
 992                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 993         else
 994                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
 995
 996         return 1;
 997 }
 998
 999 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1000         const unsigned char *in, size_t len)
1001 {
1002         size_t  bl = ctx->cipher->block_size;
1003         size_t  i;
1004         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1005
1006         if (len<bl)     return 1;
1007
1008         for (i=0,len-=bl;i<=len;i+=bl)
1009                 (*dat->block)(in+i,out+i,&dat->ks);
1010
1011         return 1;
1012 }
1013
1014 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1015         const unsigned char *in,size_t len)
1016 {
1017         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1018
1019         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
1020                         ctx->iv,&ctx->num,dat->block);
1021         return 1;
1022 }
1023
1024 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1025         const unsigned char *in,size_t len)
1026 {
1027         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1028
1029         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
1030                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1031         return 1;
1032 }
1033
1034 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1035         const unsigned char *in,size_t len)
1036 {
1037         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1038
1039         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
1040                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1041         return 1;
1042 }
1043
1044 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1045         const unsigned char *in,size_t len)
1046 {
1047         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1048
1049         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
1050                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
1051                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1052                 return 1;
1053         }
1054
1055         while (len>=MAXBITCHUNK) {
1056                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
1057                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1058                 len-=MAXBITCHUNK;
1059         }
1060         if (len)
1061                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
1062                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1063
1064         return 1;
1065 }
1066
1067 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
1068                 const unsigned char *in, size_t len)
1069 {
1070         unsigned int num = ctx->num;
1071         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1072
1073         if (dat->stream.ctr)
1074                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
1075                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
1076         else
1077                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
1078                         ctx->iv,ctx->buf,&num,dat->block);
1079         ctx->num = (size_t)num;
1080         return 1;
1081 }
1082
1083 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
1084 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
1085 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
1086
1087 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
1088         {
1089         EVP_AES_GCM_CTX *gctx = c->cipher_data;
1090         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
1091         if (gctx->iv != c->iv)
1092                 OPENSSL_free(gctx->iv);
1093         return 1;
1094         }
1095
1096 /* increment counter (64-bit int) by 1 */
1097 static void ctr64_inc(unsigned char *counter) {
1098         int n=8;
1099         unsigned char  c;
1100
1101         do {
1102                 --n;
1103                 c = counter[n];
1104                 ++c;
1105                 counter[n] = c;
1106                 if (c) return;
1107         } while (n);
1108 }
1109
1110 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1111         {
1112         EVP_AES_GCM_CTX *gctx = c->cipher_data;
1113         switch (type)
1114                 {
1115         case EVP_CTRL_INIT:
1116                 gctx->key_set = 0;
1117                 gctx->iv_set = 0;
1118                 gctx->ivlen = c->cipher->iv_len;
1119                 gctx->iv = c->iv;
1120                 gctx->taglen = -1;
1121                 gctx->iv_gen = 0;
1122                 gctx->tls_aad_len = -1;
1123                 return 1;
1124
1125         case EVP_CTRL_GCM_SET_IVLEN:
1126                 if (arg <= 0)
1127                         return 0;
1128 #ifdef OPENSSL_FIPS
1129                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
1130                                                  && arg < 12)
1131                         return 0;
1132 #endif
1133                 /* Allocate memory for IV if needed */
1134                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
1135                         {
1136                         if (gctx->iv != c->iv)
1137                                 OPENSSL_free(gctx->iv);
1138                         gctx->iv = OPENSSL_malloc(arg);
1139                         if (!gctx->iv)
1140                                 return 0;
1141                         }
1142                 gctx->ivlen = arg;
1143                 return 1;
1144
1145         case EVP_CTRL_GCM_SET_TAG:
1146                 if (arg <= 0 || arg > 16 || c->encrypt)
1147                         return 0;
1148                 memcpy(c->buf, ptr, arg);
1149                 gctx->taglen = arg;
1150                 return 1;
1151
1152         case EVP_CTRL_GCM_GET_TAG:
1153                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
1154                         return 0;
1155                 memcpy(ptr, c->buf, arg);
1156                 return 1;
1157
1158         case EVP_CTRL_GCM_SET_IV_FIXED:
1159                 /* Special case: -1 length restores whole IV */
1160                 if (arg == -1)
1161                         {
1162                         memcpy(gctx->iv, ptr, gctx->ivlen);
1163                         gctx->iv_gen = 1;
1164                         return 1;
1165                         }
1166                 /* Fixed field must be at least 4 bytes and invocation field
1167                  * at least 8.
1168                  */
1169                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
1170                         return 0;
1171                 if (arg)
1172                         memcpy(gctx->iv, ptr, arg);
1173                 if (c->encrypt &&
1174                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
1175                         return 0;
1176                 gctx->iv_gen = 1;
1177                 return 1;
1178
1179         case EVP_CTRL_GCM_IV_GEN:
1180                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
1181                         return 0;
1182                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1183                 if (arg <= 0 || arg > gctx->ivlen)
1184                         arg = gctx->ivlen;
1185                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
1186                 /* Invocation field will be at least 8 bytes in size and
1187                  * so no need to check wrap around or increment more than
1188                  * last 8 bytes.
1189                  */
1190                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
1191                 gctx->iv_set = 1;
1192                 return 1;
1193
1194         case EVP_CTRL_GCM_SET_IV_INV:
1195                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
1196                         return 0;
1197                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
1198                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1199                 gctx->iv_set = 1;
1200                 return 1;
1201
1202         case EVP_CTRL_AEAD_TLS1_AAD:
1203                 /* Save the AAD for later use */
1204                 if (arg != 13)
1205                         return 0;
1206                 memcpy(c->buf, ptr, arg);
1207                 gctx->tls_aad_len = arg;
1208                         {
1209                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
1210                         /* Correct length for explicit IV */
1211                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1212                         /* If decrypting correct for tag too */
1213                         if (!c->encrypt)
1214                                 len -= EVP_GCM_TLS_TAG_LEN;
1215                         c->buf[arg-2] = len>>8;
1216                         c->buf[arg-1] = len & 0xff;
1217                         }
1218                 /* Extra padding: tag appended to record */
1219                 return EVP_GCM_TLS_TAG_LEN;
1220
1221         default:
1222                 return -1;
1223
1224                 }
1225         }
1226
1227 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1228                         const unsigned char *iv, int enc)
1229         {
1230         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1231         if (!iv && !key)
1232                 return 1;
1233         if (key)
1234                 { do {
1235 #ifdef BSAES_CAPABLE
1236                 if (BSAES_CAPABLE)
1237                         {
1238                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1239                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1240                                         (block128_f)AES_encrypt);
1241                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
1242                         break;
1243                         }
1244                 else
1245 #endif
1246 #ifdef VPAES_CAPABLE
1247                 if (VPAES_CAPABLE)
1248                         {
1249                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1250                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1251                                         (block128_f)vpaes_encrypt);
1252                         gctx->ctr = NULL;
1253                         break;
1254                         }
1255 #endif
1256                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
1257                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1258 #ifdef AES_CTR_ASM
1259                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
1260 #else
1261                 gctx->ctr = NULL;
1262 #endif
1263                 } while (0);
1264
1265                 /* If we have an iv can set it directly, otherwise use
1266                  * saved IV.
1267                  */
1268                 if (iv == NULL && gctx->iv_set)
1269                         iv = gctx->iv;
1270                 if (iv)
1271                         {
1272                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1273                         gctx->iv_set = 1;
1274                         }
1275                 gctx->key_set = 1;
1276                 }
1277         else
1278                 {
1279                 /* If key set use IV, otherwise copy */
1280                 if (gctx->key_set)
1281                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1282                 else
1283                         memcpy(gctx->iv, iv, gctx->ivlen);
1284                 gctx->iv_set = 1;
1285                 gctx->iv_gen = 0;
1286                 }
1287         return 1;
1288         }
1289
1290 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1291  * followed by the payload and finally the tag. On encrypt generate IV,
1292  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1293  * and verify tag.
1294  */
1295
1296 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1297                 const unsigned char *in, size_t len)
1298         {
1299         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1300         int rv = -1;
1301         /* Encrypt/decrypt must be performed in place */
1302         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
1303                 return -1;
1304         /* Set IV from start of buffer or generate IV and write to start
1305          * of buffer.
1306          */
1307         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1308                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1309                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1310                 goto err;
1311         /* Use saved AAD */
1312         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1313                 goto err;
1314         /* Fix buffer and length to point to payload */
1315         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1316         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1317         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1318         if (ctx->encrypt)
1319                 {
1320                 /* Encrypt payload */
1321                 if (gctx->ctr)
1322                         {
1323                         size_t bulk=0;
1324 #if defined(AES_GCM_ASM)
1325                         if (len>=32 && AES_GCM_ASM(gctx))
1326                                 {
1327                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
1328                                         return -1;
1329
1330                                 bulk = AES_gcm_encrypt(in,out,len,
1331                                                         gctx->gcm.key,
1332                                                         gctx->gcm.Yi.c,
1333                                                         gctx->gcm.Xi.u);
1334                                 gctx->gcm.len.u[1] += bulk;
1335                                 }
1336 #endif
1337                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1338                                                         in +bulk,
1339                                                         out+bulk,
1340                                                         len-bulk,
1341                                                         gctx->ctr))
1342                                 goto err;
1343                         }
1344                 else    {
1345                         size_t bulk=0;
1346 #if defined(AES_GCM_ASM2)
1347                         if (len>=32 && AES_GCM_ASM2(gctx))
1348                                 {
1349                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
1350                                         return -1;
1351
1352                                 bulk = AES_gcm_encrypt(in,out,len,
1353                                                         gctx->gcm.key,
1354                                                         gctx->gcm.Yi.c,
1355                                                         gctx->gcm.Xi.u);
1356                                 gctx->gcm.len.u[1] += bulk;
1357                                 }
1358 #endif
1359                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1360                                                         in +bulk,
1361                                                         out+bulk,
1362                                                         len-bulk))
1363                                 goto err;
1364                         }
1365                 out += len;
1366                 /* Finally write tag */
1367                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1368                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1369                 }
1370         else
1371                 {
1372                 /* Decrypt */
1373                 if (gctx->ctr)
1374                         {
1375                         size_t bulk=0;
1376 #if defined(AES_GCM_ASM)
1377                         if (len>=16 && AES_GCM_ASM(gctx))
1378                                 {
1379                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1380                                         return -1;
1381
1382                                 bulk = AES_gcm_decrypt(in,out,len,
1383                                                         gctx->gcm.key,
1384                                                         gctx->gcm.Yi.c,
1385                                                         gctx->gcm.Xi.u);
1386                                 gctx->gcm.len.u[1] += bulk;
1387                                 }
1388 #endif
1389                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1390                                                         in +bulk,
1391                                                         out+bulk,
1392                                                         len-bulk,
1393                                                         gctx->ctr))
1394                                 goto err;
1395                         }
1396                 else    {
1397                         size_t bulk=0;
1398 #if defined(AES_GCM_ASM2)
1399                         if (len>=16 && AES_GCM_ASM2(gctx))
1400                                 {
1401                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1402                                         return -1;
1403
1404                                 bulk = AES_gcm_decrypt(in,out,len,
1405                                                         gctx->gcm.key,
1406                                                         gctx->gcm.Yi.c,
1407                                                         gctx->gcm.Xi.u);
1408                                 gctx->gcm.len.u[1] += bulk;
1409                                 }
1410 #endif
1411                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1412                                                         in +bulk,
1413                                                         out+bulk,
1414                                                         len-bulk))
1415                                 goto err;
1416                         }
1417                 /* Retrieve tag */
1418                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1419                                         EVP_GCM_TLS_TAG_LEN);
1420                 /* If tag mismatch wipe buffer */
1421                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1422                         {
1423                         OPENSSL_cleanse(out, len);
1424                         goto err;
1425                         }
1426                 rv = len;
1427                 }
1428
1429         err:
1430         gctx->iv_set = 0;
1431         gctx->tls_aad_len = -1;
1432         return rv;
1433         }
1434
1435 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1436                 const unsigned char *in, size_t len)
1437         {
1438         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1439         /* If not set up, return error */
1440         if (!gctx->key_set)
1441                 return -1;
1442
1443         if (gctx->tls_aad_len >= 0)
1444                 return aes_gcm_tls_cipher(ctx, out, in, len);
1445
1446         if (!gctx->iv_set)
1447                 return -1;
1448         if (in)
1449                 {
1450                 if (out == NULL)
1451                         {
1452                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1453                                 return -1;
1454                         }
1455                 else if (ctx->encrypt)
1456                         {
1457                         if (gctx->ctr)
1458                                 {
1459                                 size_t bulk=0;
1460 #if defined(AES_GCM_ASM)
1461                                 if (len>=32 && AES_GCM_ASM(gctx))
1462                                         {
1463                                         size_t res = (16-gctx->gcm.mres)%16;
1464
1465                                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1466                                                         in,out,res))
1467                                                 return -1;
1468
1469                                         bulk = AES_gcm_encrypt(in+res,
1470                                                         out+res,len-res,                                                                gctx->gcm.key,
1471                                                         gctx->gcm.Yi.c,
1472                                                         gctx->gcm.Xi.u);
1473                                         gctx->gcm.len.u[1] += bulk;
1474                                         bulk += res;
1475                                         }
1476 #endif
1477                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1478                                                         in +bulk,
1479                                                         out+bulk,
1480                                                         len-bulk,
1481                                                         gctx->ctr))
1482                                         return -1;
1483                                 }
1484                         else    {
1485                                 size_t bulk=0;
1486 #if defined(AES_GCM_ASM2)
1487                                 if (len>=32 && AES_GCM_ASM2(gctx))
1488                                         {
1489                                         size_t res = (16-gctx->gcm.mres)%16;
1490
1491                                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1492                                                         in,out,res))
1493                                                 return -1;
1494
1495                                         bulk = AES_gcm_encrypt(in+res,
1496                                                         out+res,len-res,                                                                gctx->gcm.key,
1497                                                         gctx->gcm.Yi.c,
1498                                                         gctx->gcm.Xi.u);
1499                                         gctx->gcm.len.u[1] += bulk;
1500                                         bulk += res;
1501                                         }
1502 #endif
1503                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1504                                                         in +bulk,
1505                                                         out+bulk,
1506                                                         len-bulk))
1507                                         return -1;
1508                                 }
1509                         }
1510                 else
1511                         {
1512                         if (gctx->ctr)
1513                                 {
1514                                 size_t bulk=0;
1515 #if defined(AES_GCM_ASM)
1516                                 if (len>=16 && AES_GCM_ASM(gctx))
1517                                         {
1518                                         size_t res = (16-gctx->gcm.mres)%16;
1519
1520                                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1521                                                         in,out,res))
1522                                                 return -1;
1523
1524                                         bulk = AES_gcm_decrypt(in+res,
1525                                                         out+res,len-res,
1526                                                         gctx->gcm.key,
1527                                                         gctx->gcm.Yi.c,
1528                                                         gctx->gcm.Xi.u);
1529                                         gctx->gcm.len.u[1] += bulk;
1530                                         bulk += res;
1531                                         }
1532 #endif
1533                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1534                                                         in +bulk,
1535                                                         out+bulk,
1536                                                         len-bulk,
1537                                                         gctx->ctr))
1538                                         return -1;
1539                                 }
1540                         else    {
1541                                 size_t bulk=0;
1542 #if defined(AES_GCM_ASM2)
1543                                 if (len>=16 && AES_GCM_ASM2(gctx))
1544                                         {
1545                                         size_t res = (16-gctx->gcm.mres)%16;
1546
1547                                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1548                                                         in,out,res))
1549                                                 return -1;
1550
1551                                         bulk = AES_gcm_decrypt(in+res,
1552                                                         out+res,len-res,
1553                                                         gctx->gcm.key,
1554                                                         gctx->gcm.Yi.c,
1555                                                         gctx->gcm.Xi.u);
1556                                         gctx->gcm.len.u[1] += bulk;
1557                                         bulk += res;
1558                                         }
1559 #endif
1560                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1561                                                         in +bulk,
1562                                                         out+bulk,
1563                                                         len-bulk))
1564                                         return -1;
1565                                 }
1566                         }
1567                 return len;
1568                 }
1569         else
1570                 {
1571                 if (!ctx->encrypt)
1572                         {
1573                         if (gctx->taglen < 0)
1574                                 return -1;
1575                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1576                                         ctx->buf, gctx->taglen) != 0)
1577                                 return -1;
1578                         gctx->iv_set = 0;
1579                         return 0;
1580                         }
1581                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1582                 gctx->taglen = 16;
1583                 /* Don't reuse the IV */
1584                 gctx->iv_set = 0;
1585                 return 0;
1586                 }
1587
1588         }
1589
1590 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1591                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1592                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1593
1594 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1595                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1596 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1597                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1598 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1599                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1600
1601 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1602         {
1603         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1604         if (type != EVP_CTRL_INIT)
1605                 return -1;
1606         /* key1 and key2 are used as an indicator both key and IV are set */
1607         xctx->xts.key1 = NULL;
1608         xctx->xts.key2 = NULL;
1609         return 1;
1610         }
1611
1612 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1613                         const unsigned char *iv, int enc)
1614         {
1615         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1616         if (!iv && !key)
1617                 return 1;
1618
1619         if (key) do
1620                 {
1621 #ifdef AES_XTS_ASM
1622                 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1623 #else
1624                 xctx->stream = NULL;
1625 #endif
1626                 /* key_len is two AES keys */
1627 #ifdef BSAES_CAPABLE
1628                 if (BSAES_CAPABLE)
1629                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1630                 else
1631 #endif
1632 #ifdef VPAES_CAPABLE
1633                 if (VPAES_CAPABLE)
1634                     {
1635                     if (enc)
1636                         {
1637                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1638                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1639                         }
1640                     else
1641                         {
1642                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1643                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1644                         }
1645
1646                 vpaes_set_encrypt_key(key + ctx->key_len/2,
1647                                                 ctx->key_len * 4, &xctx->ks2.ks);
1648                 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1649
1650                 xctx->xts.key1 = &xctx->ks1;
1651                 break;
1652                 }
1653 #endif
1654                 if (enc)
1655                         {
1656                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1657                         xctx->xts.block1 = (block128_f)AES_encrypt;
1658                         }
1659                 else
1660                         {
1661                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1662                         xctx->xts.block1 = (block128_f)AES_decrypt;
1663                         }
1664
1665                 AES_set_encrypt_key(key + ctx->key_len/2,
1666                                                 ctx->key_len * 4, &xctx->ks2.ks);
1667                 xctx->xts.block2 = (block128_f)AES_encrypt;
1668
1669                 xctx->xts.key1 = &xctx->ks1;
1670                 } while (0);
1671
1672         if (iv)
1673                 {
1674                 xctx->xts.key2 = &xctx->ks2;
1675                 memcpy(ctx->iv, iv, 16);
1676                 }
1677
1678         return 1;
1679         }
1680
1681 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1682                 const unsigned char *in, size_t len)
1683         {
1684         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1685         if (!xctx->xts.key1 || !xctx->xts.key2)
1686                 return 0;
1687         if (!out || !in || len<AES_BLOCK_SIZE)
1688                 return 0;
1689 #ifdef OPENSSL_FIPS
1690         /* Requirement of SP800-38E */
1691         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1692                         (len > (1UL<<20)*16))
1693                 {
1694                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1695                 return 0;
1696                 }
1697 #endif
1698         if (xctx->stream)
1699                 (*xctx->stream)(in, out, len,
1700                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1701         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1702                                                                 ctx->encrypt))
1703                 return 0;
1704         return 1;
1705         }
1706
1707 #define aes_xts_cleanup NULL
1708
1709 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1710                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1711
1712 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1713 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1714
1715 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1716         {
1717         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1718         switch (type)
1719                 {
1720         case EVP_CTRL_INIT:
1721                 cctx->key_set = 0;
1722                 cctx->iv_set = 0;
1723                 cctx->L = 8;
1724                 cctx->M = 12;
1725                 cctx->tag_set = 0;
1726                 cctx->len_set = 0;
1727                 return 1;
1728
1729         case EVP_CTRL_CCM_SET_IVLEN:
1730                 arg = 15 - arg;
1731         case EVP_CTRL_CCM_SET_L:
1732                 if (arg < 2 || arg > 8)
1733                         return 0;
1734                 cctx->L = arg;
1735                 return 1;
1736
1737         case EVP_CTRL_CCM_SET_TAG:
1738                 if ((arg & 1) || arg < 4 || arg > 16)
1739                         return 0;
1740                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1741                         return 0;
1742                 if (ptr)
1743                         {
1744                         cctx->tag_set = 1;
1745                         memcpy(c->buf, ptr, arg);
1746                         }
1747                 cctx->M = arg;
1748                 return 1;
1749
1750         case EVP_CTRL_CCM_GET_TAG:
1751                 if (!c->encrypt || !cctx->tag_set)
1752                         return 0;
1753                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1754                         return 0;
1755                 cctx->tag_set = 0;
1756                 cctx->iv_set = 0;
1757                 cctx->len_set = 0;
1758                 return 1;
1759
1760         default:
1761                 return -1;
1762
1763                 }
1764         }
1765
1766 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1767                         const unsigned char *iv, int enc)
1768         {
1769         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1770         if (!iv && !key)
1771                 return 1;
1772         if (key) do
1773                 {
1774 #ifdef VPAES_CAPABLE
1775                 if (VPAES_CAPABLE)
1776                         {
1777                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks.ks);
1778                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1779                                         &cctx->ks, (block128_f)vpaes_encrypt);
1780                         cctx->str = NULL;
1781                         cctx->key_set = 1;
1782                         break;
1783                         }
1784 #endif
1785                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
1786                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1787                                         &cctx->ks, (block128_f)AES_encrypt);
1788                 cctx->str = NULL;
1789                 cctx->key_set = 1;
1790                 } while (0);
1791         if (iv)
1792                 {
1793                 memcpy(ctx->iv, iv, 15 - cctx->L);
1794                 cctx->iv_set = 1;
1795                 }
1796         return 1;
1797         }
1798
1799 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1800                 const unsigned char *in, size_t len)
1801         {
1802         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1803         CCM128_CONTEXT *ccm = &cctx->ccm;
1804         /* If not set up, return error */
1805         if (!cctx->iv_set && !cctx->key_set)
1806                 return -1;
1807         if (!ctx->encrypt && !cctx->tag_set)
1808                 return -1;
1809         if (!out)
1810                 {
1811                 if (!in)
1812                         {
1813                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1814                                 return -1;
1815                         cctx->len_set = 1;
1816                         return len;
1817                         }
1818                 /* If have AAD need message length */
1819                 if (!cctx->len_set && len)
1820                         return -1;
1821                 CRYPTO_ccm128_aad(ccm, in, len);
1822                 return len;
1823                 }
1824         /* EVP_*Final() doesn't return any data */
1825         if (!in)
1826                 return 0;
1827         /* If not set length yet do it */
1828         if (!cctx->len_set)
1829                 {
1830                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1831                         return -1;
1832                 cctx->len_set = 1;
1833                 }
1834         if (ctx->encrypt)
1835                 {
1836                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1837                                                 cctx->str) :
1838                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1839                         return -1;
1840                 cctx->tag_set = 1;
1841                 return len;
1842                 }
1843         else
1844                 {
1845                 int rv = -1;
1846                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1847                                                 cctx->str) :
1848                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1849                         {
1850                         unsigned char tag[16];
1851                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1852                                 {
1853                                 if (!memcmp(tag, ctx->buf, cctx->M))
1854                                         rv = len;
1855                                 }
1856                         }
1857                 if (rv == -1)
1858                         OPENSSL_cleanse(out, len);
1859                 cctx->iv_set = 0;
1860                 cctx->tag_set = 0;
1861                 cctx->len_set = 0;
1862                 return rv;
1863                 }
1864
1865         }
1866
1867 #define aes_ccm_cleanup NULL
1868
1869 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1870 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1871 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1872
1873 #endif