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         union { double align; AES_KEY ks; } 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         union { double align; AES_KEY ks; } 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         union { double align; AES_KEY ks; } 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         union { double align; AES_KEY ks; } 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(VPAES_ASM) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC))
 161 extern unsigned int OPENSSL_ppccap_P;
 162 #define VPAES_CAPABLE   (OPENSSL_ppccap_P&(1<<1))
 163 #endif
 164
 165 #if     defined(AES_ASM) && !defined(I386_ONLY) &&      (  \
 166         ((defined(__i386)       || defined(__i386__)    || \
 167           defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
 168         defined(__x86_64)       || defined(__x86_64__)  || \
 169         defined(_M_AMD64)       || defined(_M_X64)      || \
 170         defined(__INTEL__)                              )
 171
 172 extern unsigned int OPENSSL_ia32cap_P[];
 173
 174 #ifdef VPAES_ASM
 175 #define VPAES_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
 176 #endif
 177 #ifdef BSAES_ASM
 178 #define BSAES_CAPABLE   VPAES_CAPABLE
 179 #endif
 180 /*
 181  * AES-NI section
 182  */
 183 #define AESNI_CAPABLE   (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
 184
 185 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 186                         AES_KEY *key);
 187 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 188                         AES_KEY *key);
 189
 190 void aesni_encrypt(const unsigned char *in, unsigned char *out,
 191                         const AES_KEY *key);
 192 void aesni_decrypt(const unsigned char *in, unsigned char *out,
 193                         const AES_KEY *key);
 194
 195 void aesni_ecb_encrypt(const unsigned char *in,
 196                         unsigned char *out,
 197                         size_t length,
 198                         const AES_KEY *key,
 199                         int enc);
 200 void aesni_cbc_encrypt(const unsigned char *in,
 201                         unsigned char *out,
 202                         size_t length,
 203                         const AES_KEY *key,
 204                         unsigned char *ivec, int enc);
 205
 206 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
 207                         unsigned char *out,
 208                         size_t blocks,
 209                         const void *key,
 210                         const unsigned char *ivec);
 211
 212 void aesni_xts_encrypt(const unsigned char *in,
 213                         unsigned char *out,
 214                         size_t length,
 215                         const AES_KEY *key1, const AES_KEY *key2,
 216                         const unsigned char iv[16]);
 217
 218 void aesni_xts_decrypt(const unsigned char *in,
 219                         unsigned char *out,
 220                         size_t length,
 221                         const AES_KEY *key1, const AES_KEY *key2,
 222                         const unsigned char iv[16]);
 223
 224 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
 225                         unsigned char *out,
 226                         size_t blocks,
 227                         const void *key,
 228                         const unsigned char ivec[16],
 229                         unsigned char cmac[16]);
 230
 231 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
 232                         unsigned char *out,
 233                         size_t blocks,
 234                         const void *key,
 235                         const unsigned char ivec[16],
 236                         unsigned char cmac[16]);
 237
 238 #if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
 239 size_t aesni_gcm_encrypt(const unsigned char *in,
 240                         unsigned char *out,
 241                         size_t len,
 242                         const void *key,
 243                         unsigned char ivec[16],
 244                         u64 *Xi);
 245 #define AES_gcm_encrypt aesni_gcm_encrypt
 246 size_t aesni_gcm_decrypt(const unsigned char *in,
 247                         unsigned char *out,
 248                         size_t len,
 249                         const void *key,
 250                         unsigned char ivec[16],
 251                         u64 *Xi);
 252 #define AES_gcm_decrypt aesni_gcm_decrypt
 253 void gcm_ghash_avx(u64 Xi[2],const u128 Htable[16],const u8 *in,size_t len);
 254 #define AES_GCM_ASM(gctx)       (gctx->ctr==aesni_ctr32_encrypt_blocks && \
 255                                  gctx->gcm.ghash==gcm_ghash_avx)
 256 #define AES_GCM_ASM2(gctx)      (gctx->gcm.block==(block128_f)aesni_encrypt && \
 257                                  gctx->gcm.ghash==gcm_ghash_avx)
 258 #undef AES_GCM_ASM2             /* minor size optimization */
 259 #endif
 260
 261 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 262                    const unsigned char *iv, int enc)
 263         {
 264         int ret, mode;
 265         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 266
 267         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 268         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 269             && !enc)
 270                 {
 271                 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 272                 dat->block      = (block128_f)aesni_decrypt;
 273                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 274                                         (cbc128_f)aesni_cbc_encrypt :
 275                                         NULL;
 276                 }
 277         else    {
 278                 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
 279                 dat->block      = (block128_f)aesni_encrypt;
 280                 if (mode==EVP_CIPH_CBC_MODE)
 281                         dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
 282                 else if (mode==EVP_CIPH_CTR_MODE)
 283                         dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 284                 else
 285                         dat->stream.cbc = NULL;
 286                 }
 287
 288         if(ret < 0)
 289                 {
 290                 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 291                 return 0;
 292                 }
 293
 294         return 1;
 295         }
 296
 297 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 298         const unsigned char *in, size_t len)
 299 {
 300         aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
 301
 302         return 1;
 303 }
 304
 305 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 306         const unsigned char *in, size_t len)
 307 {
 308         size_t  bl = ctx->cipher->block_size;
 309
 310         if (len<bl)     return 1;
 311
 312         aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
 313
 314         return 1;
 315 }
 316
 317 #define aesni_ofb_cipher aes_ofb_cipher
 318 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 319         const unsigned char *in,size_t len);
 320
 321 #define aesni_cfb_cipher aes_cfb_cipher
 322 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 323         const unsigned char *in,size_t len);
 324
 325 #define aesni_cfb8_cipher aes_cfb8_cipher
 326 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 327         const unsigned char *in,size_t len);
 328
 329 #define aesni_cfb1_cipher aes_cfb1_cipher
 330 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 331         const unsigned char *in,size_t len);
 332
 333 #define aesni_ctr_cipher aes_ctr_cipher
 334 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 335                 const unsigned char *in, size_t len);
 336
 337 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 338                         const unsigned char *iv, int enc)
 339         {
 340         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 341         if (!iv && !key)
 342                 return 1;
 343         if (key)
 344                 {
 345                 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
 346                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 347                                 (block128_f)aesni_encrypt);
 348                 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
 349                 /* If we have an iv can set it directly, otherwise use
 350                  * saved IV.
 351                  */
 352                 if (iv == NULL && gctx->iv_set)
 353                         iv = gctx->iv;
 354                 if (iv)
 355                         {
 356                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 357                         gctx->iv_set = 1;
 358                         }
 359                 gctx->key_set = 1;
 360                 }
 361         else
 362                 {
 363                 /* If key set use IV, otherwise copy */
 364                 if (gctx->key_set)
 365                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 366                 else
 367                         memcpy(gctx->iv, iv, gctx->ivlen);
 368                 gctx->iv_set = 1;
 369                 gctx->iv_gen = 0;
 370                 }
 371         return 1;
 372         }
 373
 374 #define aesni_gcm_cipher aes_gcm_cipher
 375 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 376                 const unsigned char *in, size_t len);
 377
 378 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 379                         const unsigned char *iv, int enc)
 380         {
 381         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 382         if (!iv && !key)
 383                 return 1;
 384
 385         if (key)
 386                 {
 387                 /* key_len is two AES keys */
 388                 if (enc)
 389                         {
 390                         aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 391                         xctx->xts.block1 = (block128_f)aesni_encrypt;
 392                         xctx->stream = aesni_xts_encrypt;
 393                         }
 394                 else
 395                         {
 396                         aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 397                         xctx->xts.block1 = (block128_f)aesni_decrypt;
 398                         xctx->stream = aesni_xts_decrypt;
 399                         }
 400
 401                 aesni_set_encrypt_key(key + ctx->key_len/2,
 402                                                 ctx->key_len * 4, &xctx->ks2.ks);
 403                 xctx->xts.block2 = (block128_f)aesni_encrypt;
 404
 405                 xctx->xts.key1 = &xctx->ks1;
 406                 }
 407
 408         if (iv)
 409                 {
 410                 xctx->xts.key2 = &xctx->ks2;
 411                 memcpy(ctx->iv, iv, 16);
 412                 }
 413
 414         return 1;
 415         }
 416
 417 #define aesni_xts_cipher aes_xts_cipher
 418 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 419                 const unsigned char *in, size_t len);
 420
 421 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 422                         const unsigned char *iv, int enc)
 423         {
 424         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 425         if (!iv && !key)
 426                 return 1;
 427         if (key)
 428                 {
 429                 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
 430                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 431                                         &cctx->ks, (block128_f)aesni_encrypt);
 432                 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
 433                                 (ccm128_f)aesni_ccm64_decrypt_blocks;
 434                 cctx->key_set = 1;
 435                 }
 436         if (iv)
 437                 {
 438                 memcpy(ctx->iv, iv, 15 - cctx->L);
 439                 cctx->iv_set = 1;
 440                 }
 441         return 1;
 442         }
 443
 444 #define aesni_ccm_cipher aes_ccm_cipher
 445 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 446                 const unsigned char *in, size_t len);
 447
 448 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 449 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 450         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 451         flags|EVP_CIPH_##MODE##_MODE,   \
 452         aesni_init_key,                 \
 453         aesni_##mode##_cipher,          \
 454         NULL,                           \
 455         sizeof(EVP_AES_KEY),            \
 456         NULL,NULL,NULL,NULL }; \
 457 static const EVP_CIPHER aes_##keylen##_##mode = { \
 458         nid##_##keylen##_##nmode,blocksize,     \
 459         keylen/8,ivlen, \
 460         flags|EVP_CIPH_##MODE##_MODE,   \
 461         aes_init_key,                   \
 462         aes_##mode##_cipher,            \
 463         NULL,                           \
 464         sizeof(EVP_AES_KEY),            \
 465         NULL,NULL,NULL,NULL }; \
 466 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 467 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 468
 469 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 470 static const EVP_CIPHER aesni_##keylen##_##mode = { \
 471         nid##_##keylen##_##mode,blocksize, \
 472         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 473         flags|EVP_CIPH_##MODE##_MODE,   \
 474         aesni_##mode##_init_key,        \
 475         aesni_##mode##_cipher,          \
 476         aes_##mode##_cleanup,           \
 477         sizeof(EVP_AES_##MODE##_CTX),   \
 478         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 479 static const EVP_CIPHER aes_##keylen##_##mode = { \
 480         nid##_##keylen##_##mode,blocksize, \
 481         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 482         flags|EVP_CIPH_##MODE##_MODE,   \
 483         aes_##mode##_init_key,          \
 484         aes_##mode##_cipher,            \
 485         aes_##mode##_cleanup,           \
 486         sizeof(EVP_AES_##MODE##_CTX),   \
 487         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 488 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 489 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
 490
 491 #elif   defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
 492
 493 #include "sparc_arch.h"
 494
 495 extern unsigned int OPENSSL_sparcv9cap_P[];
 496
 497 #define SPARC_AES_CAPABLE       (OPENSSL_sparcv9cap_P[1] & CFR_AES)
 498
 499 void    aes_t4_set_encrypt_key (const unsigned char *key, int bits,
 500                                 AES_KEY *ks);
 501 void    aes_t4_set_decrypt_key (const unsigned char *key, int bits,
 502                                 AES_KEY *ks);
 503 void    aes_t4_encrypt (const unsigned char *in, unsigned char *out,
 504                                 const AES_KEY *key);
 505 void    aes_t4_decrypt (const unsigned char *in, unsigned char *out,
 506                                 const AES_KEY *key);
 507 /*
 508  * Key-length specific subroutines were chosen for following reason.
 509  * Each SPARC T4 core can execute up to 8 threads which share core's
 510  * resources. Loading as much key material to registers allows to
 511  * minimize references to shared memory interface, as well as amount
 512  * of instructions in inner loops [much needed on T4]. But then having
 513  * non-key-length specific routines would require conditional branches
 514  * either in inner loops or on subroutines' entries. Former is hardly
 515  * acceptable, while latter means code size increase to size occupied
 516  * by multiple key-length specfic subroutines, so why fight?
 517  */
 518 void    aes128_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 519                                 size_t len, const AES_KEY *key,
 520                                 unsigned char *ivec);
 521 void    aes128_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 522                                 size_t len, const AES_KEY *key,
 523                                 unsigned char *ivec);
 524 void    aes192_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 525                                 size_t len, const AES_KEY *key,
 526                                 unsigned char *ivec);
 527 void    aes192_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 528                                 size_t len, const AES_KEY *key,
 529                                 unsigned char *ivec);
 530 void    aes256_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
 531                                 size_t len, const AES_KEY *key,
 532                                 unsigned char *ivec);
 533 void    aes256_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
 534                                 size_t len, const AES_KEY *key,
 535                                 unsigned char *ivec);
 536 void    aes128_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 537                                 size_t blocks, const AES_KEY *key,
 538                                 unsigned char *ivec);
 539 void    aes192_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 540                                 size_t blocks, const AES_KEY *key,
 541                                 unsigned char *ivec);
 542 void    aes256_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
 543                                 size_t blocks, const AES_KEY *key,
 544                                 unsigned char *ivec);
 545 void    aes128_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
 546                                 size_t blocks, const AES_KEY *key1,
 547                                 const AES_KEY *key2, const unsigned char *ivec);
 548 void    aes128_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
 549                                 size_t blocks, const AES_KEY *key1,
 550                                 const AES_KEY *key2, const unsigned char *ivec);
 551 void    aes256_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
 552                                 size_t blocks, const AES_KEY *key1,
 553                                 const AES_KEY *key2, const unsigned char *ivec);
 554 void    aes256_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
 555                                 size_t blocks, const AES_KEY *key1,
 556                                 const AES_KEY *key2, const unsigned char *ivec);
 557
 558 static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 559                    const unsigned char *iv, int enc)
 560         {
 561         int ret, mode, bits;
 562         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 563
 564         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 565         bits = ctx->key_len*8;
 566         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 567             && !enc)
 568                 {
 569                     ret = 0;
 570                     aes_t4_set_decrypt_key(key, bits, ctx->cipher_data);
 571                     dat->block  = (block128_f)aes_t4_decrypt;
 572                     switch (bits) {
 573                     case 128:
 574                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 575                                                 (cbc128_f)aes128_t4_cbc_decrypt :
 576                                                 NULL;
 577                         break;
 578                     case 192:
 579                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 580                                                 (cbc128_f)aes192_t4_cbc_decrypt :
 581                                                 NULL;
 582                         break;
 583                     case 256:
 584                         dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 585                                                 (cbc128_f)aes256_t4_cbc_decrypt :
 586                                                 NULL;
 587                         break;
 588                     default:
 589                         ret = -1;
 590                     }
 591                 }
 592         else    {
 593                     ret = 0;
 594                     aes_t4_set_encrypt_key(key, bits, ctx->cipher_data);
 595                     dat->block  = (block128_f)aes_t4_encrypt;
 596                     switch (bits) {
 597                     case 128:
 598                         if (mode==EVP_CIPH_CBC_MODE)
 599                                 dat->stream.cbc = (cbc128_f)aes128_t4_cbc_encrypt;
 600                         else if (mode==EVP_CIPH_CTR_MODE)
 601                                 dat->stream.ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
 602                         else
 603                                 dat->stream.cbc = NULL;
 604                         break;
 605                     case 192:
 606                         if (mode==EVP_CIPH_CBC_MODE)
 607                                 dat->stream.cbc = (cbc128_f)aes192_t4_cbc_encrypt;
 608                         else if (mode==EVP_CIPH_CTR_MODE)
 609                                 dat->stream.ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
 610                         else
 611                                 dat->stream.cbc = NULL;
 612                         break;
 613                     case 256:
 614                         if (mode==EVP_CIPH_CBC_MODE)
 615                                 dat->stream.cbc = (cbc128_f)aes256_t4_cbc_encrypt;
 616                         else if (mode==EVP_CIPH_CTR_MODE)
 617                                 dat->stream.ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
 618                         else
 619                                 dat->stream.cbc = NULL;
 620                         break;
 621                     default:
 622                         ret = -1;
 623                     }
 624                 }
 625
 626         if(ret < 0)
 627                 {
 628                 EVPerr(EVP_F_AES_T4_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 629                 return 0;
 630                 }
 631
 632         return 1;
 633         }
 634
 635 #define aes_t4_cbc_cipher aes_cbc_cipher
 636 static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 637         const unsigned char *in, size_t len);
 638
 639 #define aes_t4_ecb_cipher aes_ecb_cipher
 640 static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 641         const unsigned char *in, size_t len);
 642
 643 #define aes_t4_ofb_cipher aes_ofb_cipher
 644 static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 645         const unsigned char *in,size_t len);
 646
 647 #define aes_t4_cfb_cipher aes_cfb_cipher
 648 static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 649         const unsigned char *in,size_t len);
 650
 651 #define aes_t4_cfb8_cipher aes_cfb8_cipher
 652 static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 653         const unsigned char *in,size_t len);
 654
 655 #define aes_t4_cfb1_cipher aes_cfb1_cipher
 656 static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
 657         const unsigned char *in,size_t len);
 658
 659 #define aes_t4_ctr_cipher aes_ctr_cipher
 660 static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 661                 const unsigned char *in, size_t len);
 662
 663 static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 664                         const unsigned char *iv, int enc)
 665         {
 666         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
 667         if (!iv && !key)
 668                 return 1;
 669         if (key)
 670                 {
 671                 int bits = ctx->key_len * 8;
 672                 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
 673                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
 674                                 (block128_f)aes_t4_encrypt);
 675                 switch (bits) {
 676                     case 128:
 677                         gctx->ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
 678                         break;
 679                     case 192:
 680                         gctx->ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
 681                         break;
 682                     case 256:
 683                         gctx->ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
 684                         break;
 685                     default:
 686                         return 0;
 687                 }
 688                 /* If we have an iv can set it directly, otherwise use
 689                  * saved IV.
 690                  */
 691                 if (iv == NULL && gctx->iv_set)
 692                         iv = gctx->iv;
 693                 if (iv)
 694                         {
 695                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 696                         gctx->iv_set = 1;
 697                         }
 698                 gctx->key_set = 1;
 699                 }
 700         else
 701                 {
 702                 /* If key set use IV, otherwise copy */
 703                 if (gctx->key_set)
 704                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
 705                 else
 706                         memcpy(gctx->iv, iv, gctx->ivlen);
 707                 gctx->iv_set = 1;
 708                 gctx->iv_gen = 0;
 709                 }
 710         return 1;
 711         }
 712
 713 #define aes_t4_gcm_cipher aes_gcm_cipher
 714 static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 715                 const unsigned char *in, size_t len);
 716
 717 static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 718                         const unsigned char *iv, int enc)
 719         {
 720         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
 721         if (!iv && !key)
 722                 return 1;
 723
 724         if (key)
 725                 {
 726                 int bits = ctx->key_len * 4;
 727                 xctx->stream = NULL;
 728                 /* key_len is two AES keys */
 729                 if (enc)
 730                         {
 731                         aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
 732                         xctx->xts.block1 = (block128_f)aes_t4_encrypt;
 733                         switch (bits) {
 734                             case 128:
 735                                 xctx->stream = aes128_t4_xts_encrypt;
 736                                 break;
 737 #if 0 /* not yet */
 738                             case 192:
 739                                 xctx->stream = aes192_t4_xts_encrypt;
 740                                 break;
 741 #endif
 742                             case 256:
 743                                 xctx->stream = aes256_t4_xts_encrypt;
 744                                 break;
 745                             default:
 746                                 return 0;
 747                             }
 748                         }
 749                 else
 750                         {
 751                         aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
 752                         xctx->xts.block1 = (block128_f)aes_t4_decrypt;
 753                         switch (bits) {
 754                             case 128:
 755                                 xctx->stream = aes128_t4_xts_decrypt;
 756                                 break;
 757 #if 0 /* not yet */
 758                             case 192:
 759                                 xctx->stream = aes192_t4_xts_decrypt;
 760                                 break;
 761 #endif
 762                             case 256:
 763                                 xctx->stream = aes256_t4_xts_decrypt;
 764                                 break;
 765                             default:
 766                                 return 0;
 767                             }
 768                         }
 769
 770                 aes_t4_set_encrypt_key(key + ctx->key_len/2,
 771                                                 ctx->key_len * 4, &xctx->ks2.ks);
 772                 xctx->xts.block2 = (block128_f)aes_t4_encrypt;
 773
 774                 xctx->xts.key1 = &xctx->ks1;
 775                 }
 776
 777         if (iv)
 778                 {
 779                 xctx->xts.key2 = &xctx->ks2;
 780                 memcpy(ctx->iv, iv, 16);
 781                 }
 782
 783         return 1;
 784         }
 785
 786 #define aes_t4_xts_cipher aes_xts_cipher
 787 static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 788                 const unsigned char *in, size_t len);
 789
 790 static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 791                         const unsigned char *iv, int enc)
 792         {
 793         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
 794         if (!iv && !key)
 795                 return 1;
 796         if (key)
 797                 {
 798                 int bits = ctx->key_len * 8;
 799                 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
 800                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
 801                                         &cctx->ks, (block128_f)aes_t4_encrypt);
 802 #if 0 /* not yet */
 803                 switch (bits) {
 804                     case 128:
 805                         cctx->str = enc?(ccm128_f)aes128_t4_ccm64_encrypt :
 806                                 (ccm128_f)ae128_t4_ccm64_decrypt;
 807                         break;
 808                     case 192:
 809                         cctx->str = enc?(ccm128_f)aes192_t4_ccm64_encrypt :
 810                                 (ccm128_f)ae192_t4_ccm64_decrypt;
 811                         break;
 812                     case 256:
 813                         cctx->str = enc?(ccm128_f)aes256_t4_ccm64_encrypt :
 814                                 (ccm128_f)ae256_t4_ccm64_decrypt;
 815                         break;
 816                     default:
 817                         return 0;
 818                     }
 819 #endif
 820                 cctx->key_set = 1;
 821                 }
 822         if (iv)
 823                 {
 824                 memcpy(ctx->iv, iv, 15 - cctx->L);
 825                 cctx->iv_set = 1;
 826                 }
 827         return 1;
 828         }
 829
 830 #define aes_t4_ccm_cipher aes_ccm_cipher
 831 static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 832                 const unsigned char *in, size_t len);
 833
 834 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 835 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
 836         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 837         flags|EVP_CIPH_##MODE##_MODE,   \
 838         aes_t4_init_key,                \
 839         aes_t4_##mode##_cipher,         \
 840         NULL,                           \
 841         sizeof(EVP_AES_KEY),            \
 842         NULL,NULL,NULL,NULL }; \
 843 static const EVP_CIPHER aes_##keylen##_##mode = { \
 844         nid##_##keylen##_##nmode,blocksize,     \
 845         keylen/8,ivlen, \
 846         flags|EVP_CIPH_##MODE##_MODE,   \
 847         aes_init_key,                   \
 848         aes_##mode##_cipher,            \
 849         NULL,                           \
 850         sizeof(EVP_AES_KEY),            \
 851         NULL,NULL,NULL,NULL }; \
 852 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 853 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
 854
 855 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 856 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
 857         nid##_##keylen##_##mode,blocksize, \
 858         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 859         flags|EVP_CIPH_##MODE##_MODE,   \
 860         aes_t4_##mode##_init_key,       \
 861         aes_t4_##mode##_cipher,         \
 862         aes_##mode##_cleanup,           \
 863         sizeof(EVP_AES_##MODE##_CTX),   \
 864         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 865 static const EVP_CIPHER aes_##keylen##_##mode = { \
 866         nid##_##keylen##_##mode,blocksize, \
 867         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 868         flags|EVP_CIPH_##MODE##_MODE,   \
 869         aes_##mode##_init_key,          \
 870         aes_##mode##_cipher,            \
 871         aes_##mode##_cleanup,           \
 872         sizeof(EVP_AES_##MODE##_CTX),   \
 873         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 874 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 875 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
 876
 877 #else
 878
 879 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
 880 static const EVP_CIPHER aes_##keylen##_##mode = { \
 881         nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
 882         flags|EVP_CIPH_##MODE##_MODE,   \
 883         aes_init_key,                   \
 884         aes_##mode##_cipher,            \
 885         NULL,                           \
 886         sizeof(EVP_AES_KEY),            \
 887         NULL,NULL,NULL,NULL }; \
 888 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 889 { return &aes_##keylen##_##mode; }
 890
 891 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
 892 static const EVP_CIPHER aes_##keylen##_##mode = { \
 893         nid##_##keylen##_##mode,blocksize, \
 894         (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
 895         flags|EVP_CIPH_##MODE##_MODE,   \
 896         aes_##mode##_init_key,          \
 897         aes_##mode##_cipher,            \
 898         aes_##mode##_cleanup,           \
 899         sizeof(EVP_AES_##MODE##_CTX),   \
 900         NULL,NULL,aes_##mode##_ctrl,NULL }; \
 901 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 902 { return &aes_##keylen##_##mode; }
 903 #endif
 904
 905 #if defined(AES_ASM) && defined(BSAES_ASM) && (defined(__arm__) || defined(__arm))
 906 #include "arm_arch.h"
 907 #if __ARM_ARCH__>=7
 908 #define BSAES_CAPABLE  (OPENSSL_armcap_P & ARMV7_NEON)
 909 #endif
 910 #endif
 911
 912 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)             \
 913         BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)     \
 914         BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)      \
 915         BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 916         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)   \
 917         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags)       \
 918         BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags)       \
 919         BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
 920
 921 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 922                    const unsigned char *iv, int enc)
 923         {
 924         int ret, mode;
 925         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
 926
 927         mode = ctx->cipher->flags & EVP_CIPH_MODE;
 928         if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 929             && !enc)
 930 #ifdef BSAES_CAPABLE
 931             if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 932                 {
 933                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 934                 dat->block      = (block128_f)AES_decrypt;
 935                 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
 936                 }
 937             else
 938 #endif
 939 #ifdef VPAES_CAPABLE
 940             if (VPAES_CAPABLE)
 941                 {
 942                 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 943                 dat->block      = (block128_f)vpaes_decrypt;
 944                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 945                                         (cbc128_f)vpaes_cbc_encrypt :
 946                                         NULL;
 947                 }
 948             else
 949 #endif
 950                 {
 951                 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 952                 dat->block      = (block128_f)AES_decrypt;
 953                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 954                                         (cbc128_f)AES_cbc_encrypt :
 955                                         NULL;
 956                 }
 957         else
 958 #ifdef BSAES_CAPABLE
 959             if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 960                 {
 961                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 962                 dat->block      = (block128_f)AES_encrypt;
 963                 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
 964                 }
 965             else
 966 #endif
 967 #ifdef VPAES_CAPABLE
 968             if (VPAES_CAPABLE)
 969                 {
 970                 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 971                 dat->block      = (block128_f)vpaes_encrypt;
 972                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 973                                         (cbc128_f)vpaes_cbc_encrypt :
 974                                         NULL;
 975                 }
 976             else
 977 #endif
 978                 {
 979                 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
 980                 dat->block      = (block128_f)AES_encrypt;
 981                 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
 982                                         (cbc128_f)AES_cbc_encrypt :
 983                                         NULL;
 984 #ifdef AES_CTR_ASM
 985                 if (mode==EVP_CIPH_CTR_MODE)
 986                         dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
 987 #endif
 988                 }
 989
 990         if(ret < 0)
 991                 {
 992                 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
 993                 return 0;
 994                 }
 995
 996         return 1;
 997         }
 998
 999 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1000         const unsigned char *in, size_t len)
1001 {
1002         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1003
1004         if (dat->stream.cbc)
1005                 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
1006         else if (ctx->encrypt)
1007                 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
1008         else
1009                 CRYPTO_cbc128_decrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
1010
1011         return 1;
1012 }
1013
1014 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1015         const unsigned char *in, size_t len)
1016 {
1017         size_t  bl = ctx->cipher->block_size;
1018         size_t  i;
1019         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1020
1021         if (len<bl)     return 1;
1022
1023         for (i=0,len-=bl;i<=len;i+=bl)
1024                 (*dat->block)(in+i,out+i,&dat->ks);
1025
1026         return 1;
1027 }
1028
1029 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1030         const unsigned char *in,size_t len)
1031 {
1032         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1033
1034         CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
1035                         ctx->iv,&ctx->num,dat->block);
1036         return 1;
1037 }
1038
1039 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1040         const unsigned char *in,size_t len)
1041 {
1042         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1043
1044         CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
1045                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1046         return 1;
1047 }
1048
1049 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1050         const unsigned char *in,size_t len)
1051 {
1052         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1053
1054         CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
1055                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1056         return 1;
1057 }
1058
1059 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1060         const unsigned char *in,size_t len)
1061 {
1062         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1063
1064         if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
1065                 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
1066                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1067                 return 1;
1068         }
1069
1070         while (len>=MAXBITCHUNK) {
1071                 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
1072                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1073                 len-=MAXBITCHUNK;
1074         }
1075         if (len)
1076                 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
1077                         ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1078
1079         return 1;
1080 }
1081
1082 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
1083                 const unsigned char *in, size_t len)
1084 {
1085         unsigned int num = ctx->num;
1086         EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1087
1088         if (dat->stream.ctr)
1089                 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
1090                         ctx->iv,ctx->buf,&num,dat->stream.ctr);
1091         else
1092                 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
1093                         ctx->iv,ctx->buf,&num,dat->block);
1094         ctx->num = (size_t)num;
1095         return 1;
1096 }
1097
1098 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
1099 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
1100 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
1101
1102 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
1103         {
1104         EVP_AES_GCM_CTX *gctx = c->cipher_data;
1105         OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
1106         if (gctx->iv != c->iv)
1107                 OPENSSL_free(gctx->iv);
1108         return 1;
1109         }
1110
1111 /* increment counter (64-bit int) by 1 */
1112 static void ctr64_inc(unsigned char *counter) {
1113         int n=8;
1114         unsigned char  c;
1115
1116         do {
1117                 --n;
1118                 c = counter[n];
1119                 ++c;
1120                 counter[n] = c;
1121                 if (c) return;
1122         } while (n);
1123 }
1124
1125 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1126         {
1127         EVP_AES_GCM_CTX *gctx = c->cipher_data;
1128         switch (type)
1129                 {
1130         case EVP_CTRL_INIT:
1131                 gctx->key_set = 0;
1132                 gctx->iv_set = 0;
1133                 gctx->ivlen = c->cipher->iv_len;
1134                 gctx->iv = c->iv;
1135                 gctx->taglen = -1;
1136                 gctx->iv_gen = 0;
1137                 gctx->tls_aad_len = -1;
1138                 return 1;
1139
1140         case EVP_CTRL_GCM_SET_IVLEN:
1141                 if (arg <= 0)
1142                         return 0;
1143 #ifdef OPENSSL_FIPSCANISTER
1144                 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
1145                                                  && arg < 12)
1146                         return 0;
1147 #endif
1148                 /* Allocate memory for IV if needed */
1149                 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
1150                         {
1151                         if (gctx->iv != c->iv)
1152                                 OPENSSL_free(gctx->iv);
1153                         gctx->iv = OPENSSL_malloc(arg);
1154                         if (!gctx->iv)
1155                                 return 0;
1156                         }
1157                 gctx->ivlen = arg;
1158                 return 1;
1159
1160         case EVP_CTRL_GCM_SET_TAG:
1161                 if (arg <= 0 || arg > 16 || c->encrypt)
1162                         return 0;
1163                 memcpy(c->buf, ptr, arg);
1164                 gctx->taglen = arg;
1165                 return 1;
1166
1167         case EVP_CTRL_GCM_GET_TAG:
1168                 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
1169                         return 0;
1170                 memcpy(ptr, c->buf, arg);
1171                 return 1;
1172
1173         case EVP_CTRL_GCM_SET_IV_FIXED:
1174                 /* Special case: -1 length restores whole IV */
1175                 if (arg == -1)
1176                         {
1177                         memcpy(gctx->iv, ptr, gctx->ivlen);
1178                         gctx->iv_gen = 1;
1179                         return 1;
1180                         }
1181                 /* Fixed field must be at least 4 bytes and invocation field
1182                  * at least 8.
1183                  */
1184                 if ((arg < 4) || (gctx->ivlen - arg) < 8)
1185                         return 0;
1186                 if (arg)
1187                         memcpy(gctx->iv, ptr, arg);
1188                 if (c->encrypt &&
1189                         RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
1190                         return 0;
1191                 gctx->iv_gen = 1;
1192                 return 1;
1193
1194         case EVP_CTRL_GCM_IV_GEN:
1195                 if (gctx->iv_gen == 0 || gctx->key_set == 0)
1196                         return 0;
1197                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1198                 if (arg <= 0 || arg > gctx->ivlen)
1199                         arg = gctx->ivlen;
1200                 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
1201                 /* Invocation field will be at least 8 bytes in size and
1202                  * so no need to check wrap around or increment more than
1203                  * last 8 bytes.
1204                  */
1205                 ctr64_inc(gctx->iv + gctx->ivlen - 8);
1206                 gctx->iv_set = 1;
1207                 return 1;
1208
1209         case EVP_CTRL_GCM_SET_IV_INV:
1210                 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
1211                         return 0;
1212                 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
1213                 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1214                 gctx->iv_set = 1;
1215                 return 1;
1216
1217         case EVP_CTRL_AEAD_TLS1_AAD:
1218                 /* Save the AAD for later use */
1219                 if (arg != 13)
1220                         return 0;
1221                 memcpy(c->buf, ptr, arg);
1222                 gctx->tls_aad_len = arg;
1223                         {
1224                         unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
1225                         /* Correct length for explicit IV */
1226                         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1227                         /* If decrypting correct for tag too */
1228                         if (!c->encrypt)
1229                                 len -= EVP_GCM_TLS_TAG_LEN;
1230                         c->buf[arg-2] = len>>8;
1231                         c->buf[arg-1] = len & 0xff;
1232                         }
1233                 /* Extra padding: tag appended to record */
1234                 return EVP_GCM_TLS_TAG_LEN;
1235
1236         default:
1237                 return -1;
1238
1239                 }
1240         }
1241
1242 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1243                         const unsigned char *iv, int enc)
1244         {
1245         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1246         if (!iv && !key)
1247                 return 1;
1248         if (key)
1249                 { do {
1250 #ifdef BSAES_CAPABLE
1251                 if (BSAES_CAPABLE)
1252                         {
1253                         AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1254                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1255                                         (block128_f)AES_encrypt);
1256                         gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
1257                         break;
1258                         }
1259                 else
1260 #endif
1261 #ifdef VPAES_CAPABLE
1262                 if (VPAES_CAPABLE)
1263                         {
1264                         vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1265                         CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1266                                         (block128_f)vpaes_encrypt);
1267                         gctx->ctr = NULL;
1268                         break;
1269                         }
1270                 else
1271 #endif
1272                 (void)0;        /* terminate potentially open 'else' */
1273
1274                 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
1275                 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1276 #ifdef AES_CTR_ASM
1277                 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
1278 #else
1279                 gctx->ctr = NULL;
1280 #endif
1281                 } while (0);
1282
1283                 /* If we have an iv can set it directly, otherwise use
1284                  * saved IV.
1285                  */
1286                 if (iv == NULL && gctx->iv_set)
1287                         iv = gctx->iv;
1288                 if (iv)
1289                         {
1290                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1291                         gctx->iv_set = 1;
1292                         }
1293                 gctx->key_set = 1;
1294                 }
1295         else
1296                 {
1297                 /* If key set use IV, otherwise copy */
1298                 if (gctx->key_set)
1299                         CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1300                 else
1301                         memcpy(gctx->iv, iv, gctx->ivlen);
1302                 gctx->iv_set = 1;
1303                 gctx->iv_gen = 0;
1304                 }
1305         return 1;
1306         }
1307
1308 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1309  * followed by the payload and finally the tag. On encrypt generate IV,
1310  * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1311  * and verify tag.
1312  */
1313
1314 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1315                 const unsigned char *in, size_t len)
1316         {
1317         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1318         int rv = -1;
1319         /* Encrypt/decrypt must be performed in place */
1320         if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
1321                 return -1;
1322         /* Set IV from start of buffer or generate IV and write to start
1323          * of buffer.
1324          */
1325         if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1326                                 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1327                                 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1328                 goto err;
1329         /* Use saved AAD */
1330         if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1331                 goto err;
1332         /* Fix buffer and length to point to payload */
1333         in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1334         out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1335         len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1336         if (ctx->encrypt)
1337                 {
1338                 /* Encrypt payload */
1339                 if (gctx->ctr)
1340                         {
1341                         size_t bulk=0;
1342 #if defined(AES_GCM_ASM)
1343                         if (len>=32 && AES_GCM_ASM(gctx))
1344                                 {
1345                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
1346                                         return -1;
1347
1348                                 bulk = AES_gcm_encrypt(in,out,len,
1349                                                         gctx->gcm.key,
1350                                                         gctx->gcm.Yi.c,
1351                                                         gctx->gcm.Xi.u);
1352                                 gctx->gcm.len.u[1] += bulk;
1353                                 }
1354 #endif
1355                         if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1356                                                         in +bulk,
1357                                                         out+bulk,
1358                                                         len-bulk,
1359                                                         gctx->ctr))
1360                                 goto err;
1361                         }
1362                 else    {
1363                         size_t bulk=0;
1364 #if defined(AES_GCM_ASM2)
1365                         if (len>=32 && AES_GCM_ASM2(gctx))
1366                                 {
1367                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
1368                                         return -1;
1369
1370                                 bulk = AES_gcm_encrypt(in,out,len,
1371                                                         gctx->gcm.key,
1372                                                         gctx->gcm.Yi.c,
1373                                                         gctx->gcm.Xi.u);
1374                                 gctx->gcm.len.u[1] += bulk;
1375                                 }
1376 #endif
1377                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1378                                                         in +bulk,
1379                                                         out+bulk,
1380                                                         len-bulk))
1381                                 goto err;
1382                         }
1383                 out += len;
1384                 /* Finally write tag */
1385                 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1386                 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1387                 }
1388         else
1389                 {
1390                 /* Decrypt */
1391                 if (gctx->ctr)
1392                         {
1393                         size_t bulk=0;
1394 #if defined(AES_GCM_ASM)
1395                         if (len>=16 && AES_GCM_ASM(gctx))
1396                                 {
1397                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1398                                         return -1;
1399
1400                                 bulk = AES_gcm_decrypt(in,out,len,
1401                                                         gctx->gcm.key,
1402                                                         gctx->gcm.Yi.c,
1403                                                         gctx->gcm.Xi.u);
1404                                 gctx->gcm.len.u[1] += bulk;
1405                                 }
1406 #endif
1407                         if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1408                                                         in +bulk,
1409                                                         out+bulk,
1410                                                         len-bulk,
1411                                                         gctx->ctr))
1412                                 goto err;
1413                         }
1414                 else    {
1415                         size_t bulk=0;
1416 #if defined(AES_GCM_ASM2)
1417                         if (len>=16 && AES_GCM_ASM2(gctx))
1418                                 {
1419                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1420                                         return -1;
1421
1422                                 bulk = AES_gcm_decrypt(in,out,len,
1423                                                         gctx->gcm.key,
1424                                                         gctx->gcm.Yi.c,
1425                                                         gctx->gcm.Xi.u);
1426                                 gctx->gcm.len.u[1] += bulk;
1427                                 }
1428 #endif
1429                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1430                                                         in +bulk,
1431                                                         out+bulk,
1432                                                         len-bulk))
1433                                 goto err;
1434                         }
1435                 /* Retrieve tag */
1436                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1437                                         EVP_GCM_TLS_TAG_LEN);
1438                 /* If tag mismatch wipe buffer */
1439                 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1440                         {
1441                         OPENSSL_cleanse(out, len);
1442                         goto err;
1443                         }
1444                 rv = len;
1445                 }
1446
1447         err:
1448         gctx->iv_set = 0;
1449         gctx->tls_aad_len = -1;
1450         return rv;
1451         }
1452
1453 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1454                 const unsigned char *in, size_t len)
1455         {
1456         EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1457         /* If not set up, return error */
1458         if (!gctx->key_set)
1459                 return -1;
1460
1461         if (gctx->tls_aad_len >= 0)
1462                 return aes_gcm_tls_cipher(ctx, out, in, len);
1463
1464         if (!gctx->iv_set)
1465                 return -1;
1466         if (in)
1467                 {
1468                 if (out == NULL)
1469                         {
1470                         if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1471                                 return -1;
1472                         }
1473                 else if (ctx->encrypt)
1474                         {
1475                         if (gctx->ctr)
1476                                 {
1477                                 size_t bulk=0;
1478 #if defined(AES_GCM_ASM)
1479                                 if (len>=32 && AES_GCM_ASM(gctx))
1480                                         {
1481                                         size_t res = (16-gctx->gcm.mres)%16;
1482
1483                                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1484                                                         in,out,res))
1485                                                 return -1;
1486
1487                                         bulk = AES_gcm_encrypt(in+res,
1488                                                         out+res,len-res,                                                                gctx->gcm.key,
1489                                                         gctx->gcm.Yi.c,
1490                                                         gctx->gcm.Xi.u);
1491                                         gctx->gcm.len.u[1] += bulk;
1492                                         bulk += res;
1493                                         }
1494 #endif
1495                                 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1496                                                         in +bulk,
1497                                                         out+bulk,
1498                                                         len-bulk,
1499                                                         gctx->ctr))
1500                                         return -1;
1501                                 }
1502                         else    {
1503                                 size_t bulk=0;
1504 #if defined(AES_GCM_ASM2)
1505                                 if (len>=32 && AES_GCM_ASM2(gctx))
1506                                         {
1507                                         size_t res = (16-gctx->gcm.mres)%16;
1508
1509                                         if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1510                                                         in,out,res))
1511                                                 return -1;
1512
1513                                         bulk = AES_gcm_encrypt(in+res,
1514                                                         out+res,len-res,                                                                gctx->gcm.key,
1515                                                         gctx->gcm.Yi.c,
1516                                                         gctx->gcm.Xi.u);
1517                                         gctx->gcm.len.u[1] += bulk;
1518                                         bulk += res;
1519                                         }
1520 #endif
1521                                 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1522                                                         in +bulk,
1523                                                         out+bulk,
1524                                                         len-bulk))
1525                                         return -1;
1526                                 }
1527                         }
1528                 else
1529                         {
1530                         if (gctx->ctr)
1531                                 {
1532                                 size_t bulk=0;
1533 #if defined(AES_GCM_ASM)
1534                                 if (len>=16 && AES_GCM_ASM(gctx))
1535                                         {
1536                                         size_t res = (16-gctx->gcm.mres)%16;
1537
1538                                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1539                                                         in,out,res))
1540                                                 return -1;
1541
1542                                         bulk = AES_gcm_decrypt(in+res,
1543                                                         out+res,len-res,
1544                                                         gctx->gcm.key,
1545                                                         gctx->gcm.Yi.c,
1546                                                         gctx->gcm.Xi.u);
1547                                         gctx->gcm.len.u[1] += bulk;
1548                                         bulk += res;
1549                                         }
1550 #endif
1551                                 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1552                                                         in +bulk,
1553                                                         out+bulk,
1554                                                         len-bulk,
1555                                                         gctx->ctr))
1556                                         return -1;
1557                                 }
1558                         else    {
1559                                 size_t bulk=0;
1560 #if defined(AES_GCM_ASM2)
1561                                 if (len>=16 && AES_GCM_ASM2(gctx))
1562                                         {
1563                                         size_t res = (16-gctx->gcm.mres)%16;
1564
1565                                         if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1566                                                         in,out,res))
1567                                                 return -1;
1568
1569                                         bulk = AES_gcm_decrypt(in+res,
1570                                                         out+res,len-res,
1571                                                         gctx->gcm.key,
1572                                                         gctx->gcm.Yi.c,
1573                                                         gctx->gcm.Xi.u);
1574                                         gctx->gcm.len.u[1] += bulk;
1575                                         bulk += res;
1576                                         }
1577 #endif
1578                                 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1579                                                         in +bulk,
1580                                                         out+bulk,
1581                                                         len-bulk))
1582                                         return -1;
1583                                 }
1584                         }
1585                 return len;
1586                 }
1587         else
1588                 {
1589                 if (!ctx->encrypt)
1590                         {
1591                         if (gctx->taglen < 0)
1592                                 return -1;
1593                         if (CRYPTO_gcm128_finish(&gctx->gcm,
1594                                         ctx->buf, gctx->taglen) != 0)
1595                                 return -1;
1596                         gctx->iv_set = 0;
1597                         return 0;
1598                         }
1599                 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1600                 gctx->taglen = 16;
1601                 /* Don't reuse the IV */
1602                 gctx->iv_set = 0;
1603                 return 0;
1604                 }
1605
1606         }
1607
1608 #define CUSTOM_FLAGS    (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1609                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1610                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1611
1612 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1613                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1614 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1615                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1616 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1617                 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1618
1619 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1620         {
1621         EVP_AES_XTS_CTX *xctx = c->cipher_data;
1622         if (type != EVP_CTRL_INIT)
1623                 return -1;
1624         /* key1 and key2 are used as an indicator both key and IV are set */
1625         xctx->xts.key1 = NULL;
1626         xctx->xts.key2 = NULL;
1627         return 1;
1628         }
1629
1630 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1631                         const unsigned char *iv, int enc)
1632         {
1633         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1634         if (!iv && !key)
1635                 return 1;
1636
1637         if (key) do
1638                 {
1639 #ifdef AES_XTS_ASM
1640                 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1641 #else
1642                 xctx->stream = NULL;
1643 #endif
1644                 /* key_len is two AES keys */
1645 #ifdef BSAES_CAPABLE
1646                 if (BSAES_CAPABLE)
1647                         xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1648                 else
1649 #endif
1650 #ifdef VPAES_CAPABLE
1651                 if (VPAES_CAPABLE)
1652                     {
1653                     if (enc)
1654                         {
1655                         vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1656                         xctx->xts.block1 = (block128_f)vpaes_encrypt;
1657                         }
1658                     else
1659                         {
1660                         vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1661                         xctx->xts.block1 = (block128_f)vpaes_decrypt;
1662                         }
1663
1664                     vpaes_set_encrypt_key(key + ctx->key_len/2,
1665                                                 ctx->key_len * 4, &xctx->ks2.ks);
1666                     xctx->xts.block2 = (block128_f)vpaes_encrypt;
1667
1668                     xctx->xts.key1 = &xctx->ks1;
1669                     break;
1670                     }
1671                 else
1672 #endif
1673                 (void)0;        /* terminate potentially open 'else' */
1674
1675                 if (enc)
1676                         {
1677                         AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1678                         xctx->xts.block1 = (block128_f)AES_encrypt;
1679                         }
1680                 else
1681                         {
1682                         AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1683                         xctx->xts.block1 = (block128_f)AES_decrypt;
1684                         }
1685
1686                 AES_set_encrypt_key(key + ctx->key_len/2,
1687                                                 ctx->key_len * 4, &xctx->ks2.ks);
1688                 xctx->xts.block2 = (block128_f)AES_encrypt;
1689
1690                 xctx->xts.key1 = &xctx->ks1;
1691                 } while (0);
1692
1693         if (iv)
1694                 {
1695                 xctx->xts.key2 = &xctx->ks2;
1696                 memcpy(ctx->iv, iv, 16);
1697                 }
1698
1699         return 1;
1700         }
1701
1702 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1703                 const unsigned char *in, size_t len)
1704         {
1705         EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1706         if (!xctx->xts.key1 || !xctx->xts.key2)
1707                 return 0;
1708         if (!out || !in || len<AES_BLOCK_SIZE)
1709                 return 0;
1710 #ifdef OPENSSL_FIPSCANISTER
1711         /* Requirement of SP800-38E */
1712         if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1713                         (len > (1UL<<20)*16))
1714                 {
1715                 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1716                 return 0;
1717                 }
1718 #endif
1719         if (xctx->stream)
1720                 (*xctx->stream)(in, out, len,
1721                                 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1722         else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1723                                                                 ctx->encrypt))
1724                 return 0;
1725         return 1;
1726         }
1727
1728 #define aes_xts_cleanup NULL
1729
1730 #define XTS_FLAGS       (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1731                          | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1732
1733 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1734 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1735
1736 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1737         {
1738         EVP_AES_CCM_CTX *cctx = c->cipher_data;
1739         switch (type)
1740                 {
1741         case EVP_CTRL_INIT:
1742                 cctx->key_set = 0;
1743                 cctx->iv_set = 0;
1744                 cctx->L = 8;
1745                 cctx->M = 12;
1746                 cctx->tag_set = 0;
1747                 cctx->len_set = 0;
1748                 return 1;
1749
1750         case EVP_CTRL_CCM_SET_IVLEN:
1751                 arg = 15 - arg;
1752         case EVP_CTRL_CCM_SET_L:
1753                 if (arg < 2 || arg > 8)
1754                         return 0;
1755                 cctx->L = arg;
1756                 return 1;
1757
1758         case EVP_CTRL_CCM_SET_TAG:
1759                 if ((arg & 1) || arg < 4 || arg > 16)
1760                         return 0;
1761                 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1762                         return 0;
1763                 if (ptr)
1764                         {
1765                         cctx->tag_set = 1;
1766                         memcpy(c->buf, ptr, arg);
1767                         }
1768                 cctx->M = arg;
1769                 return 1;
1770
1771         case EVP_CTRL_CCM_GET_TAG:
1772                 if (!c->encrypt || !cctx->tag_set)
1773                         return 0;
1774                 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1775                         return 0;
1776                 cctx->tag_set = 0;
1777                 cctx->iv_set = 0;
1778                 cctx->len_set = 0;
1779                 return 1;
1780
1781         default:
1782                 return -1;
1783
1784                 }
1785         }
1786
1787 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1788                         const unsigned char *iv, int enc)
1789         {
1790         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1791         if (!iv && !key)
1792                 return 1;
1793         if (key) do
1794                 {
1795 #ifdef VPAES_CAPABLE
1796                 if (VPAES_CAPABLE)
1797                         {
1798                         vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks.ks);
1799                         CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1800                                         &cctx->ks, (block128_f)vpaes_encrypt);
1801                         cctx->str = NULL;
1802                         cctx->key_set = 1;
1803                         break;
1804                         }
1805 #endif
1806                 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
1807                 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1808                                         &cctx->ks, (block128_f)AES_encrypt);
1809                 cctx->str = NULL;
1810                 cctx->key_set = 1;
1811                 } while (0);
1812         if (iv)
1813                 {
1814                 memcpy(ctx->iv, iv, 15 - cctx->L);
1815                 cctx->iv_set = 1;
1816                 }
1817         return 1;
1818         }
1819
1820 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1821                 const unsigned char *in, size_t len)
1822         {
1823         EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1824         CCM128_CONTEXT *ccm = &cctx->ccm;
1825         /* If not set up, return error */
1826         if (!cctx->iv_set && !cctx->key_set)
1827                 return -1;
1828         if (!ctx->encrypt && !cctx->tag_set)
1829                 return -1;
1830         if (!out)
1831                 {
1832                 if (!in)
1833                         {
1834                         if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1835                                 return -1;
1836                         cctx->len_set = 1;
1837                         return len;
1838                         }
1839                 /* If have AAD need message length */
1840                 if (!cctx->len_set && len)
1841                         return -1;
1842                 CRYPTO_ccm128_aad(ccm, in, len);
1843                 return len;
1844                 }
1845         /* EVP_*Final() doesn't return any data */
1846         if (!in)
1847                 return 0;
1848         /* If not set length yet do it */
1849         if (!cctx->len_set)
1850                 {
1851                 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1852                         return -1;
1853                 cctx->len_set = 1;
1854                 }
1855         if (ctx->encrypt)
1856                 {
1857                 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1858                                                 cctx->str) :
1859                                 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1860                         return -1;
1861                 cctx->tag_set = 1;
1862                 return len;
1863                 }
1864         else
1865                 {
1866                 int rv = -1;
1867                 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1868                                                 cctx->str) :
1869                                 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1870                         {
1871                         unsigned char tag[16];
1872                         if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1873                                 {
1874                                 if (!memcmp(tag, ctx->buf, cctx->M))
1875                                         rv = len;
1876                                 }
1877                         }
1878                 if (rv == -1)
1879                         OPENSSL_cleanse(out, len);
1880                 cctx->iv_set = 0;
1881                 cctx->tag_set = 0;
1882                 cctx->len_set = 0;
1883                 return rv;
1884                 }
1885
1886         }
1887
1888 #define aes_ccm_cleanup NULL
1889
1890 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1891 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1892 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1893
1894 typedef struct
1895         {
1896         union { double align; AES_KEY ks; } ks;
1897         /* Indicates if IV has been set */
1898         unsigned char *iv;
1899         } EVP_AES_WRAP_CTX;
1900
1901 static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1902                         const unsigned char *iv, int enc)
1903         {
1904         EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
1905         if (!iv && !key)
1906                 return 1;
1907         if (key)
1908                 {
1909                 if (ctx->encrypt)
1910                         AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
1911                 else
1912                         AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
1913                 if (!iv)
1914                         wctx->iv = NULL;
1915                 }
1916         if (iv)
1917                 {
1918                 memcpy(ctx->iv, iv, 8);
1919                 wctx->iv = ctx->iv;
1920                 }
1921         return 1;
1922         }
1923
1924 static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1925                 const unsigned char *in, size_t inlen)
1926         {
1927         EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
1928         size_t rv;
1929         if (inlen % 8)
1930                 return 0;
1931         if (!out)
1932                 {
1933                 if (ctx->encrypt)
1934                         return inlen + 8;
1935                 else
1936                         return inlen - 8;
1937                 }
1938         if (!in)
1939                 return 0;
1940         if (ctx->encrypt)
1941                 rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen,
1942                                                 (block128_f)AES_encrypt);
1943         else
1944                 rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen,
1945                                                 (block128_f)AES_decrypt);
1946         return rv ? (int)rv : -1;
1947         }
1948
1949 #define WRAP_FLAGS      (EVP_CIPH_WRAP_MODE \
1950                 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1951                 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
1952
1953 static const EVP_CIPHER aes_128_wrap = {
1954         NID_id_aes128_wrap,
1955         8, 16, 8, WRAP_FLAGS,
1956         aes_wrap_init_key, aes_wrap_cipher,
1957         NULL,
1958         sizeof(EVP_AES_WRAP_CTX),
1959         NULL,NULL,NULL,NULL };
1960
1961 const EVP_CIPHER *EVP_aes_128_wrap(void)
1962         {
1963         return &aes_128_wrap;
1964         }
1965
1966 static const EVP_CIPHER aes_192_wrap = {
1967         NID_id_aes192_wrap,
1968         8, 24, 8, WRAP_FLAGS,
1969         aes_wrap_init_key, aes_wrap_cipher,
1970         NULL,
1971         sizeof(EVP_AES_WRAP_CTX),
1972         NULL,NULL,NULL,NULL };
1973
1974 const EVP_CIPHER *EVP_aes_192_wrap(void)
1975         {
1976         return &aes_192_wrap;
1977         }
1978
1979 static const EVP_CIPHER aes_256_wrap = {
1980         NID_id_aes256_wrap,
1981         8, 32, 8, WRAP_FLAGS,
1982         aes_wrap_init_key, aes_wrap_cipher,
1983         NULL,
1984         sizeof(EVP_AES_WRAP_CTX),
1985         NULL,NULL,NULL,NULL };
1986
1987 const EVP_CIPHER *EVP_aes_256_wrap(void)
1988         {
1989         return &aes_256_wrap;
1990         }
1991
1992 #endif