crypto/evp/e_aes_cbc_hmac_sha1.c

   1 /* ====================================================================
   2  * Copyright (c) 2011-2013 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  *    licensing@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 #include <openssl/opensslconf.h>
  51
  52 #include <stdio.h>
  53 #include <string.h>
  54
  55 #if !defined(OPENSSL_NO_AES) && !defined(OPENSSL_NO_SHA1)
  56
  57 #include <openssl/evp.h>
  58 #include <openssl/objects.h>
  59 #include <openssl/aes.h>
  60 #include <openssl/sha.h>
  61 #include <openssl/rand.h>
  62 #include "modes_lcl.h"
  63
  64 #ifndef EVP_CIPH_FLAG_AEAD_CIPHER
  65 #define EVP_CIPH_FLAG_AEAD_CIPHER       0x200000
  66 #define EVP_CTRL_AEAD_TLS1_AAD          0x16
  67 #define EVP_CTRL_AEAD_SET_MAC_KEY       0x17
  68 #endif
  69
  70 #if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1)
  71 #define EVP_CIPH_FLAG_DEFAULT_ASN1 0
  72 #endif
  73
  74 #if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
  75 #define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
  76 #endif
  77
  78 #define TLS1_1_VERSION 0x0302
  79
  80 typedef struct
  81     {
  82     AES_KEY             ks;
  83     SHA_CTX             head,tail,md;
  84     size_t              payload_length; /* AAD length in decrypt case */
  85     union {
  86         unsigned int    tls_ver;
  87         unsigned char   tls_aad[16];    /* 13 used */
  88     } aux;
  89     } EVP_AES_HMAC_SHA1;
  90
  91 #define NO_PAYLOAD_LENGTH       ((size_t)-1)
  92
  93 #if     defined(AES_ASM) &&     ( \
  94         defined(__x86_64)       || defined(__x86_64__)  || \
  95         defined(_M_AMD64)       || defined(_M_X64)      || \
  96         defined(__INTEL__)      )
  97
  98 extern unsigned int OPENSSL_ia32cap_P[3];
  99 #define AESNI_CAPABLE   (1<<(57-32))
 100
 101 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
 102                               AES_KEY *key);
 103 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
 104                               AES_KEY *key);
 105
 106 void aesni_cbc_encrypt(const unsigned char *in,
 107                            unsigned char *out,
 108                            size_t length,
 109                            const AES_KEY *key,
 110                            unsigned char *ivec, int enc);
 111
 112 void aesni_cbc_sha1_enc (const void *inp, void *out, size_t blocks,
 113                 const AES_KEY *key, unsigned char iv[16],
 114                 SHA_CTX *ctx,const void *in0);
 115
 116 void aesni256_cbc_sha1_dec (const void *inp, void *out, size_t blocks,
 117                 const AES_KEY *key, unsigned char iv[16],
 118                 SHA_CTX *ctx,const void *in0);
 119
 120 #define data(ctx) ((EVP_AES_HMAC_SHA1 *)(ctx)->cipher_data)
 121
 122 static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
 123                         const unsigned char *inkey,
 124                         const unsigned char *iv, int enc)
 125         {
 126         EVP_AES_HMAC_SHA1 *key = data(ctx);
 127         int ret;
 128
 129         if (enc)
 130                 ret=aesni_set_encrypt_key(inkey,ctx->key_len*8,&key->ks);
 131         else
 132                 ret=aesni_set_decrypt_key(inkey,ctx->key_len*8,&key->ks);
 133
 134         SHA1_Init(&key->head);  /* handy when benchmarking */
 135         key->tail = key->head;
 136         key->md   = key->head;
 137
 138         key->payload_length = NO_PAYLOAD_LENGTH;
 139
 140         return ret<0?0:1;
 141         }
 142
 143 #define STITCHED_CALL
 144 #undef  STITCHED_DECRYPT_CALL
 145
 146 #if !defined(STITCHED_CALL)
 147 #define aes_off 0
 148 #endif
 149
 150 void sha1_block_data_order (void *c,const void *p,size_t len);
 151
 152 static void sha1_update(SHA_CTX *c,const void *data,size_t len)
 153 {       const unsigned char *ptr = data;
 154         size_t res;
 155
 156         if ((res = c->num)) {
 157                 res = SHA_CBLOCK-res;
 158                 if (len<res) res=len;
 159                 SHA1_Update (c,ptr,res);
 160                 ptr += res;
 161                 len -= res;
 162         }
 163
 164         res = len % SHA_CBLOCK;
 165         len -= res;
 166
 167         if (len) {
 168                 sha1_block_data_order(c,ptr,len/SHA_CBLOCK);
 169
 170                 ptr += len;
 171                 c->Nh += len>>29;
 172                 c->Nl += len<<=3;
 173                 if (c->Nl<(unsigned int)len) c->Nh++;
 174         }
 175
 176         if (res)
 177                 SHA1_Update(c,ptr,res);
 178 }
 179
 180 #ifdef SHA1_Update
 181 #undef SHA1_Update
 182 #endif
 183 #define SHA1_Update sha1_update
 184
 185 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
 186
 187 typedef struct { unsigned int A[8],B[8],C[8],D[8],E[8]; } SHA1_MB_CTX;
 188 typedef struct { const unsigned char *ptr; int blocks;  } HASH_DESC;
 189
 190 void sha1_multi_block(SHA1_MB_CTX *,const HASH_DESC *,int);
 191
 192 typedef struct { const unsigned char *inp; unsigned char *out;
 193                  int blocks; u64 iv[2]; } CIPH_DESC;
 194
 195 void aesni_multi_cbc_encrypt(CIPH_DESC *,void *,int);
 196
 197 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
 198         unsigned char *out, const unsigned char *inp, size_t inp_len,
 199         int n4x)        /* n4x is 1 or 2 */
 200 {
 201         HASH_DESC       hash_d[8], edges[8];
 202         CIPH_DESC       ciph_d[8];
 203         unsigned char   storage[sizeof(SHA1_MB_CTX)+32];
 204         union { u64     q[16];
 205                 u32     d[32];
 206                 u8      c[128]; } blocks[8];
 207         SHA1_MB_CTX     *ctx;
 208         unsigned int    frag, last, packlen, i, x4=4*n4x;
 209         size_t          ret = 0;
 210         u8              *IVs;
 211
 212         ctx = (SHA1_MB_CTX *)(storage+32-((size_t)storage%32)); /* align */
 213
 214         frag = (unsigned int)inp_len>>(1+n4x);
 215         last = (unsigned int)inp_len+frag-(frag<<(1+n4x));
 216         if (last>frag && ((last+13+9)%64)<(x4-1)) {
 217                 frag++;
 218                 last -= x4-1;
 219         }
 220
 221         hash_d[0].ptr = inp;
 222         for (i=1;i<x4;i++)      hash_d[i].ptr = hash_d[i-1].ptr+frag;
 223
 224         for (i=0;i<x4;i++) {
 225                 unsigned int len = (i==(x4-1)?last:frag);
 226
 227                 ctx->A[i] = key->md.h0;
 228                 ctx->B[i] = key->md.h1;
 229                 ctx->C[i] = key->md.h2;
 230                 ctx->D[i] = key->md.h3;
 231                 ctx->E[i] = key->md.h4;
 232
 233                 /* fix seqnum */
 234 #if defined(BSWAP8)
 235                 blocks[i].q[0] = BSWAP8(BSWAP8(*(u64*)key->md.data)+i);
 236 #else
 237                 blocks[i].c[7] += ((u8*)key->md.data)[7]+i;
 238                 if (blocks[i].c[7] < i) {
 239                         int j;
 240
 241                         for (j=6;j>=0;j--) {
 242                                 if (blocks[i].c[j]=((u8*)key->md.data)[j]+1) break;
 243                         }
 244                 }
 245 #endif
 246                 blocks[i].c[8] = ((u8*)key->md.data)[8];
 247                 blocks[i].c[9] = ((u8*)key->md.data)[9];
 248                 blocks[i].c[10] = ((u8*)key->md.data)[10];
 249                 /* fix length */
 250                 blocks[i].c[11] = (u8)(len>>8);
 251                 blocks[i].c[12] = (u8)(len);
 252
 253                 memcpy(blocks[i].c+13,hash_d[i].ptr,64-13);
 254                 hash_d[i].ptr += 64-13;
 255                 hash_d[i].blocks = (len-(64-13))/64;
 256
 257                 edges[i].ptr = blocks[i].c;
 258                 edges[i].blocks = 1;
 259         }
 260
 261         /* hash 13-byte headers and first 64-13 bytes of inputs */
 262         sha1_multi_block(ctx,edges,n4x);
 263         /* hash bulk inputs */
 264         sha1_multi_block(ctx,hash_d,n4x);
 265
 266         memset(blocks,0,sizeof(blocks));
 267         for (i=0;i<x4;i++) {
 268                 unsigned int            len = (i==(x4-1)?last:frag),
 269                                         off = hash_d[i].blocks*64;
 270                 const unsigned char    *ptr = hash_d[i].ptr+off;
 271
 272                 off = len-(64-13)-off;  /* remainder actually */
 273                 memcpy(blocks[i].c,ptr,off);
 274                 blocks[i].c[off]=0x80;
 275                 len += 64+13;           /* 64 is HMAC header */
 276                 len *= 8;               /* convert to bits */
 277                 if (off<(64-8)) {
 278                         blocks[i].d[15] = BSWAP4(len);
 279                         edges[i].blocks = 1;
 280                 } else {
 281                         blocks[i].d[31] = BSWAP4(len);
 282                         edges[i].blocks = 2;
 283                 }
 284                 edges[i].ptr = blocks[i].c;
 285         }
 286
 287         /* hash input tails and finalize */
 288         sha1_multi_block(ctx,edges,n4x);
 289
 290         memset(blocks,0,sizeof(blocks));
 291         for (i=0;i<x4;i++) {
 292                 blocks[i].d[0] = BSWAP4(ctx->A[i]);     ctx->A[i] = key->tail.h0;
 293                 blocks[i].d[1] = BSWAP4(ctx->B[i]);     ctx->B[i] = key->tail.h1;
 294                 blocks[i].d[2] = BSWAP4(ctx->C[i]);     ctx->C[i] = key->tail.h2;
 295                 blocks[i].d[3] = BSWAP4(ctx->D[i]);     ctx->D[i] = key->tail.h3;
 296                 blocks[i].d[4] = BSWAP4(ctx->E[i]);     ctx->E[i] = key->tail.h4;
 297                 blocks[i].c[20] = 0x80;
 298                 blocks[i].d[15] = BSWAP4((64+20)*8);
 299                 edges[i].ptr = blocks[i].c;
 300                 edges[i].blocks = 1;
 301         }
 302
 303         /* finalize MACs */
 304         sha1_multi_block(ctx,edges,n4x);
 305
 306         packlen = 5+16+((frag+20+16)&-16);
 307
 308         out += (packlen<<(1+n4x))-packlen;
 309         inp += (frag<<(1+n4x))-frag;
 310
 311         RAND_bytes((IVs=blocks[0].c),16*x4);    /* ask for IVs in bulk */
 312
 313         for (i=x4-1;;i--) {
 314                 unsigned int len = (i==(x4-1)?last:frag), pad, j;
 315                 unsigned char *out0 = out;
 316
 317                 out += 5+16;            /* place for header and explicit IV */
 318                 ciph_d[i].inp = out;
 319                 ciph_d[i].out = out;
 320
 321                 memmove(out,inp,len);
 322                 out += len;
 323
 324                 /* write MAC */
 325                 ((u32 *)out)[0] = BSWAP4(ctx->A[i]);
 326                 ((u32 *)out)[1] = BSWAP4(ctx->B[i]);
 327                 ((u32 *)out)[2] = BSWAP4(ctx->C[i]);
 328                 ((u32 *)out)[3] = BSWAP4(ctx->D[i]);
 329                 ((u32 *)out)[4] = BSWAP4(ctx->E[i]);
 330                 out += 20;
 331                 len += 20;
 332
 333                 /* pad */
 334                 pad = 15-len%16;
 335                 for (j=0;j<=pad;j++) *(out++) = pad;
 336                 len += pad+1;
 337
 338                 ciph_d[i].blocks = len/16;
 339                 len += 16;      /* account for explicit iv */
 340
 341                 /* arrange header */
 342                 out0[0] = ((u8*)key->md.data)[8];
 343                 out0[1] = ((u8*)key->md.data)[9];
 344                 out0[2] = ((u8*)key->md.data)[10];
 345                 out0[3] = (u8)(len>>8);
 346                 out0[4] = (u8)(len);
 347
 348                 /* explicit iv */
 349                 memcpy(ciph_d[i].iv, IVs, 16);
 350                 memcpy(&out0[5],     IVs, 16);
 351
 352                 ret += len+5;
 353
 354                 if (i==0) break;
 355
 356                 out = out0-packlen;
 357                 inp -= frag;
 358                 IVs += 16;
 359         }
 360
 361         aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
 362
 363         OPENSSL_cleanse(blocks,sizeof(blocks));
 364         OPENSSL_cleanse(ctx,sizeof(*ctx));
 365
 366         return ret;
 367 }
 368 #endif
 369
 370 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 371                       const unsigned char *in, size_t len)
 372         {
 373         EVP_AES_HMAC_SHA1 *key = data(ctx);
 374         unsigned int l;
 375         size_t  plen = key->payload_length,
 376                 iv = 0,         /* explicit IV in TLS 1.1 and later */
 377                 sha_off = 0;
 378 #if defined(STITCHED_CALL)
 379         size_t  aes_off = 0,
 380                 blocks;
 381
 382         sha_off = SHA_CBLOCK-key->md.num;
 383 #endif
 384
 385         key->payload_length = NO_PAYLOAD_LENGTH;
 386
 387         if (len%AES_BLOCK_SIZE) return 0;
 388
 389         if (ctx->encrypt) {
 390                 if (plen==NO_PAYLOAD_LENGTH)
 391                         plen = len;
 392                 else if (len!=((plen+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE))
 393                         return 0;
 394                 else if (key->aux.tls_ver >= TLS1_1_VERSION)
 395                         iv = AES_BLOCK_SIZE;
 396
 397 #if defined(STITCHED_CALL)
 398                 if (plen>(sha_off+iv) && (blocks=(plen-(sha_off+iv))/SHA_CBLOCK)) {
 399                         SHA1_Update(&key->md,in+iv,sha_off);
 400
 401                         aesni_cbc_sha1_enc(in,out,blocks,&key->ks,
 402                                 ctx->iv,&key->md,in+iv+sha_off);
 403                         blocks *= SHA_CBLOCK;
 404                         aes_off += blocks;
 405                         sha_off += blocks;
 406                         key->md.Nh += blocks>>29;
 407                         key->md.Nl += blocks<<=3;
 408                         if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
 409                 } else {
 410                         sha_off = 0;
 411                 }
 412 #endif
 413                 sha_off += iv;
 414                 SHA1_Update(&key->md,in+sha_off,plen-sha_off);
 415
 416                 if (plen!=len)  {       /* "TLS" mode of operation */
 417                         if (in!=out)
 418                                 memcpy(out+aes_off,in+aes_off,plen-aes_off);
 419
 420                         /* calculate HMAC and append it to payload */
 421                         SHA1_Final(out+plen,&key->md);
 422                         key->md = key->tail;
 423                         SHA1_Update(&key->md,out+plen,SHA_DIGEST_LENGTH);
 424                         SHA1_Final(out+plen,&key->md);
 425
 426                         /* pad the payload|hmac */
 427                         plen += SHA_DIGEST_LENGTH;
 428                         for (l=len-plen-1;plen<len;plen++) out[plen]=l;
 429                         /* encrypt HMAC|padding at once */
 430                         aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off,
 431                                         &key->ks,ctx->iv,1);
 432                 } else {
 433                         aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off,
 434                                         &key->ks,ctx->iv,1);
 435                 }
 436         } else {
 437                 union { unsigned int  u[SHA_DIGEST_LENGTH/sizeof(unsigned int)];
 438                         unsigned char c[32+SHA_DIGEST_LENGTH]; } mac, *pmac;
 439
 440                 /* arrange cache line alignment */
 441                 pmac = (void *)(((size_t)mac.c+31)&((size_t)0-32));
 442
 443                 if (plen != NO_PAYLOAD_LENGTH) {        /* "TLS" mode of operation */
 444                         size_t inp_len, mask, j, i;
 445                         unsigned int res, maxpad, pad, bitlen;
 446                         int ret = 1;
 447                         union { unsigned int  u[SHA_LBLOCK];
 448                                 unsigned char c[SHA_CBLOCK]; }
 449                                 *data = (void *)key->md.data;
 450 #if defined(STITCHED_DECRYPT_CALL)
 451                         unsigned char tail_iv[AES_BLOCK_SIZE];
 452                         int stitch=0;
 453 #endif
 454
 455                         if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3])
 456                             >= TLS1_1_VERSION) {
 457                                 if (len<(AES_BLOCK_SIZE+SHA_DIGEST_LENGTH+1))
 458                                         return 0;
 459
 460                                 /* omit explicit iv */
 461                                 memcpy(ctx->iv,in,AES_BLOCK_SIZE);
 462                                 in  += AES_BLOCK_SIZE;
 463                                 out += AES_BLOCK_SIZE;
 464                                 len -= AES_BLOCK_SIZE;
 465                         }
 466                         else if (len<(SHA_DIGEST_LENGTH+1))
 467                                 return 0;
 468
 469 #if defined(STITCHED_DECRYPT_CALL)
 470                         if (len>=1024 && ctx->key_len==32) {
 471                                 /* decrypt last block */
 472                                 memcpy(tail_iv,in+len-2*AES_BLOCK_SIZE,AES_BLOCK_SIZE);
 473                                 aesni_cbc_encrypt(in+len-AES_BLOCK_SIZE,
 474                                                 out+len-AES_BLOCK_SIZE,AES_BLOCK_SIZE,
 475                                                 &key->ks,tail_iv,0);
 476                                 stitch=1;
 477                         } else
 478 #endif
 479                         /* decrypt HMAC|padding at once */
 480                         aesni_cbc_encrypt(in,out,len,
 481                                         &key->ks,ctx->iv,0);
 482
 483                         /* figure out payload length */
 484                         pad = out[len-1];
 485                         maxpad = len-(SHA_DIGEST_LENGTH+1);
 486                         maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
 487                         maxpad &= 255;
 488
 489                         inp_len = len - (SHA_DIGEST_LENGTH+pad+1);
 490                         mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
 491                         inp_len &= mask;
 492                         ret &= (int)mask;
 493
 494                         key->aux.tls_aad[plen-2] = inp_len>>8;
 495                         key->aux.tls_aad[plen-1] = inp_len;
 496
 497                         /* calculate HMAC */
 498                         key->md = key->head;
 499                         SHA1_Update(&key->md,key->aux.tls_aad,plen);
 500
 501 #if defined(STITCHED_DECRYPT_CALL)
 502                         if (stitch) {
 503                                 blocks = (len-(256+32+SHA_CBLOCK))/SHA_CBLOCK;
 504                                 aes_off = len-AES_BLOCK_SIZE-blocks*SHA_CBLOCK;
 505                                 sha_off = SHA_CBLOCK-plen;
 506
 507                                 aesni_cbc_encrypt(in,out,aes_off,
 508                                         &key->ks,ctx->iv,0);
 509
 510                                 SHA1_Update(&key->md,out,sha_off);
 511                                 aesni256_cbc_sha1_dec(in+aes_off,
 512                                         out+aes_off,blocks,&key->ks,ctx->iv,
 513                                         &key->md,out+sha_off);
 514
 515                                 sha_off += blocks*=SHA_CBLOCK;
 516                                 out += sha_off;
 517                                 len -= sha_off;
 518                                 inp_len -= sha_off;
 519
 520                                 key->md.Nl += (blocks<<3);      /* at most 18 bits */
 521                                 memcpy(ctx->iv,tail_iv,AES_BLOCK_SIZE);
 522                         }
 523 #endif
 524
 525 #if 1
 526                         len -= SHA_DIGEST_LENGTH;               /* amend mac */
 527                         if (len>=(256+SHA_CBLOCK)) {
 528                                 j = (len-(256+SHA_CBLOCK))&(0-SHA_CBLOCK);
 529                                 j += SHA_CBLOCK-key->md.num;
 530                                 SHA1_Update(&key->md,out,j);
 531                                 out += j;
 532                                 len -= j;
 533                                 inp_len -= j;
 534                         }
 535
 536                         /* but pretend as if we hashed padded payload */
 537                         bitlen = key->md.Nl+(inp_len<<3);       /* at most 18 bits */
 538 #ifdef BSWAP4
 539                         bitlen = BSWAP4(bitlen);
 540 #else
 541                         mac.c[0] = 0;
 542                         mac.c[1] = (unsigned char)(bitlen>>16);
 543                         mac.c[2] = (unsigned char)(bitlen>>8);
 544                         mac.c[3] = (unsigned char)bitlen;
 545                         bitlen = mac.u[0];
 546 #endif
 547
 548                         pmac->u[0]=0;
 549                         pmac->u[1]=0;
 550                         pmac->u[2]=0;
 551                         pmac->u[3]=0;
 552                         pmac->u[4]=0;
 553
 554                         for (res=key->md.num, j=0;j<len;j++) {
 555                                 size_t c = out[j];
 556                                 mask = (j-inp_len)>>(sizeof(j)*8-8);
 557                                 c &= mask;
 558                                 c |= 0x80&~mask&~((inp_len-j)>>(sizeof(j)*8-8));
 559                                 data->c[res++]=(unsigned char)c;
 560
 561                                 if (res!=SHA_CBLOCK) continue;
 562
 563                                 /* j is not incremented yet */
 564                                 mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
 565                                 data->u[SHA_LBLOCK-1] |= bitlen&mask;
 566                                 sha1_block_data_order(&key->md,data,1);
 567                                 mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
 568                                 pmac->u[0] |= key->md.h0 & mask;
 569                                 pmac->u[1] |= key->md.h1 & mask;
 570                                 pmac->u[2] |= key->md.h2 & mask;
 571                                 pmac->u[3] |= key->md.h3 & mask;
 572                                 pmac->u[4] |= key->md.h4 & mask;
 573                                 res=0;
 574                         }
 575
 576                         for(i=res;i<SHA_CBLOCK;i++,j++) data->c[i]=0;
 577
 578                         if (res>SHA_CBLOCK-8) {
 579                                 mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
 580                                 data->u[SHA_LBLOCK-1] |= bitlen&mask;
 581                                 sha1_block_data_order(&key->md,data,1);
 582                                 mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
 583                                 pmac->u[0] |= key->md.h0 & mask;
 584                                 pmac->u[1] |= key->md.h1 & mask;
 585                                 pmac->u[2] |= key->md.h2 & mask;
 586                                 pmac->u[3] |= key->md.h3 & mask;
 587                                 pmac->u[4] |= key->md.h4 & mask;
 588
 589                                 memset(data,0,SHA_CBLOCK);
 590                                 j+=64;
 591                         }
 592                         data->u[SHA_LBLOCK-1] = bitlen;
 593                         sha1_block_data_order(&key->md,data,1);
 594                         mask = 0-((j-inp_len-73)>>(sizeof(j)*8-1));
 595                         pmac->u[0] |= key->md.h0 & mask;
 596                         pmac->u[1] |= key->md.h1 & mask;
 597                         pmac->u[2] |= key->md.h2 & mask;
 598                         pmac->u[3] |= key->md.h3 & mask;
 599                         pmac->u[4] |= key->md.h4 & mask;
 600
 601 #ifdef BSWAP4
 602                         pmac->u[0] = BSWAP4(pmac->u[0]);
 603                         pmac->u[1] = BSWAP4(pmac->u[1]);
 604                         pmac->u[2] = BSWAP4(pmac->u[2]);
 605                         pmac->u[3] = BSWAP4(pmac->u[3]);
 606                         pmac->u[4] = BSWAP4(pmac->u[4]);
 607 #else
 608                         for (i=0;i<5;i++) {
 609                                 res = pmac->u[i];
 610                                 pmac->c[4*i+0]=(unsigned char)(res>>24);
 611                                 pmac->c[4*i+1]=(unsigned char)(res>>16);
 612                                 pmac->c[4*i+2]=(unsigned char)(res>>8);
 613                                 pmac->c[4*i+3]=(unsigned char)res;
 614                         }
 615 #endif
 616                         len += SHA_DIGEST_LENGTH;
 617 #else
 618                         SHA1_Update(&key->md,out,inp_len);
 619                         res = key->md.num;
 620                         SHA1_Final(pmac->c,&key->md);
 621
 622                         {
 623                         unsigned int inp_blocks, pad_blocks;
 624
 625                         /* but pretend as if we hashed padded payload */
 626                         inp_blocks = 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
 627                         res += (unsigned int)(len-inp_len);
 628                         pad_blocks = res / SHA_CBLOCK;
 629                         res %= SHA_CBLOCK;
 630                         pad_blocks += 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
 631                         for (;inp_blocks<pad_blocks;inp_blocks++)
 632                                 sha1_block_data_order(&key->md,data,1);
 633                         }
 634 #endif
 635                         key->md = key->tail;
 636                         SHA1_Update(&key->md,pmac->c,SHA_DIGEST_LENGTH);
 637                         SHA1_Final(pmac->c,&key->md);
 638
 639                         /* verify HMAC */
 640                         out += inp_len;
 641                         len -= inp_len;
 642 #if 1
 643                         {
 644                         unsigned char *p = out+len-1-maxpad-SHA_DIGEST_LENGTH;
 645                         size_t off = out-p;
 646                         unsigned int c, cmask;
 647
 648                         maxpad += SHA_DIGEST_LENGTH;
 649                         for (res=0,i=0,j=0;j<maxpad;j++) {
 650                                 c = p[j];
 651                                 cmask = ((int)(j-off-SHA_DIGEST_LENGTH))>>(sizeof(int)*8-1);
 652                                 res |= (c^pad)&~cmask;  /* ... and padding */
 653                                 cmask &= ((int)(off-1-j))>>(sizeof(int)*8-1);
 654                                 res |= (c^pmac->c[i])&cmask;
 655                                 i += 1&cmask;
 656                         }
 657                         maxpad -= SHA_DIGEST_LENGTH;
 658
 659                         res = 0-((0-res)>>(sizeof(res)*8-1));
 660                         ret &= (int)~res;
 661                         }
 662 #else
 663                         for (res=0,i=0;i<SHA_DIGEST_LENGTH;i++)
 664                                 res |= out[i]^pmac->c[i];
 665                         res = 0-((0-res)>>(sizeof(res)*8-1));
 666                         ret &= (int)~res;
 667
 668                         /* verify padding */
 669                         pad = (pad&~res) | (maxpad&res);
 670                         out = out+len-1-pad;
 671                         for (res=0,i=0;i<pad;i++)
 672                                 res |= out[i]^pad;
 673
 674                         res = (0-res)>>(sizeof(res)*8-1);
 675                         ret &= (int)~res;
 676 #endif
 677                         return ret;
 678                 } else {
 679 #if defined(STITCHED_DECRYPT_CALL)
 680                         if (len>=1024 && ctx->key_len==32) {
 681                                 if (sha_off%=SHA_CBLOCK)
 682                                         blocks = (len-3*SHA_CBLOCK)/SHA_CBLOCK;
 683                                 else
 684                                         blocks = (len-2*SHA_CBLOCK)/SHA_CBLOCK;
 685                                 aes_off = len-blocks*SHA_CBLOCK;
 686
 687                                 aesni_cbc_encrypt(in,out,aes_off,
 688                                         &key->ks,ctx->iv,0);
 689                                 SHA1_Update(&key->md,out,sha_off);
 690                                 aesni256_cbc_sha1_dec(in+aes_off,
 691                                         out+aes_off,blocks,&key->ks,ctx->iv,
 692                                         &key->md,out+sha_off);
 693
 694                                 sha_off += blocks*=SHA_CBLOCK;
 695                                 out += sha_off;
 696                                 len -= sha_off;
 697
 698                                 key->md.Nh += blocks>>29;
 699                                 key->md.Nl += blocks<<=3;
 700                                 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
 701                         } else
 702 #endif
 703                         /* decrypt HMAC|padding at once */
 704                         aesni_cbc_encrypt(in,out,len,
 705                                         &key->ks,ctx->iv,0);
 706
 707                         SHA1_Update(&key->md,out,len);
 708                 }
 709         }
 710
 711         return 1;
 712         }
 713
 714 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
 715         {
 716         EVP_AES_HMAC_SHA1 *key = data(ctx);
 717
 718         switch (type)
 719                 {
 720         case EVP_CTRL_AEAD_SET_MAC_KEY:
 721                 {
 722                 unsigned int  i;
 723                 unsigned char hmac_key[64];
 724
 725                 memset (hmac_key,0,sizeof(hmac_key));
 726
 727                 if (arg > (int)sizeof(hmac_key)) {
 728                         SHA1_Init(&key->head);
 729                         SHA1_Update(&key->head,ptr,arg);
 730                         SHA1_Final(hmac_key,&key->head);
 731                 } else {
 732                         memcpy(hmac_key,ptr,arg);
 733                 }
 734
 735                 for (i=0;i<sizeof(hmac_key);i++)
 736                         hmac_key[i] ^= 0x36;            /* ipad */
 737                 SHA1_Init(&key->head);
 738                 SHA1_Update(&key->head,hmac_key,sizeof(hmac_key));
 739
 740                 for (i=0;i<sizeof(hmac_key);i++)
 741                         hmac_key[i] ^= 0x36^0x5c;       /* opad */
 742                 SHA1_Init(&key->tail);
 743                 SHA1_Update(&key->tail,hmac_key,sizeof(hmac_key));
 744
 745                 OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
 746
 747                 return 1;
 748                 }
 749         case EVP_CTRL_AEAD_TLS1_AAD:
 750                 {
 751                 unsigned char *p=ptr;
 752                 unsigned int   len=p[arg-2]<<8|p[arg-1];
 753
 754                 if (ctx->encrypt)
 755                         {
 756                         key->payload_length = len;
 757                         if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) {
 758                                 len -= AES_BLOCK_SIZE;
 759                                 p[arg-2] = len>>8;
 760                                 p[arg-1] = len;
 761                         }
 762                         key->md = key->head;
 763                         SHA1_Update(&key->md,p,arg);
 764
 765                         return (int)(((len+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)
 766                                 - len);
 767                         }
 768                 else
 769                         {
 770                         if (arg>13) arg = 13;
 771                         memcpy(key->aux.tls_aad,ptr,arg);
 772                         key->payload_length = arg;
 773
 774                         return SHA_DIGEST_LENGTH;
 775                         }
 776                 }
 777 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
 778         case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
 779                 return (int)(5+16+((arg+20+16)&-16));
 780         case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
 781                 {
 782                 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
 783                         (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
 784                 unsigned int n4x=1, x4;
 785                 unsigned int frag, last, packlen, inp_len;
 786
 787                 if (arg<sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) return -1;
 788
 789                 inp_len = param->inp[11]<<8|param->inp[12];
 790
 791                 if (ctx->encrypt)
 792                         {
 793                         if ((param->inp[9]<<8|param->inp[10]) < TLS1_1_VERSION)
 794                                 return -1;
 795
 796                         if (inp_len)
 797                                 {
 798                                 if (inp_len<4096) return 0;     /* too short */
 799
 800                                 if (inp_len>=8192 && OPENSSL_ia32cap_P[2]&(1<<5))
 801                                         n4x=2;  /* AVX2 */
 802                                 }
 803                         else if ((n4x=param->interleave/4) && n4x<=2)
 804                                 inp_len = param->len;
 805                         else
 806                                 return -1;
 807
 808                         key->md = key->head;
 809                         SHA1_Update(&key->md,param->inp,13);
 810
 811                         x4 = 4*n4x; n4x += 1;
 812
 813                         frag = inp_len>>n4x;
 814                         last = inp_len+frag-(frag<<n4x);
 815                         if (last>frag && ((last+13+9)%64<(x4-1))) {
 816                                 frag++;
 817                                 last -= x4-1;
 818                         }
 819
 820                         packlen = 5+16+((frag+20+16)&-16);
 821                         packlen = (packlen<<n4x)-packlen;
 822                         packlen += 5+16+((last+20+16)&-16);
 823
 824                         param->interleave = x4;
 825
 826                         return (int)packlen;
 827                         }
 828                 else
 829                         return -1;      /* not yet */
 830                 }
 831         case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
 832                 {
 833                 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
 834                         (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
 835
 836                 return (int)tls1_1_multi_block_encrypt(key,param->out,param->inp,
 837                                                 param->len,param->interleave/4);
 838                 }
 839         case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
 840 #endif
 841         default:
 842                 return -1;
 843                 }
 844         }
 845
 846 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher =
 847         {
 848 #ifdef NID_aes_128_cbc_hmac_sha1
 849         NID_aes_128_cbc_hmac_sha1,
 850 #else
 851         NID_undef,
 852 #endif
 853         16,16,16,
 854         EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
 855         EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
 856         aesni_cbc_hmac_sha1_init_key,
 857         aesni_cbc_hmac_sha1_cipher,
 858         NULL,
 859         sizeof(EVP_AES_HMAC_SHA1),
 860         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
 861         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
 862         aesni_cbc_hmac_sha1_ctrl,
 863         NULL
 864         };
 865
 866 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher =
 867         {
 868 #ifdef NID_aes_256_cbc_hmac_sha1
 869         NID_aes_256_cbc_hmac_sha1,
 870 #else
 871         NID_undef,
 872 #endif
 873         16,32,16,
 874         EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
 875         EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
 876         aesni_cbc_hmac_sha1_init_key,
 877         aesni_cbc_hmac_sha1_cipher,
 878         NULL,
 879         sizeof(EVP_AES_HMAC_SHA1),
 880         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
 881         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
 882         aesni_cbc_hmac_sha1_ctrl,
 883         NULL
 884         };
 885
 886 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
 887         {
 888         return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
 889                 &aesni_128_cbc_hmac_sha1_cipher:NULL);
 890         }
 891
 892 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
 893         {
 894         return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
 895                 &aesni_256_cbc_hmac_sha1_cipher:NULL);
 896         }
 897 #else
 898 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
 899         {
 900         return NULL;
 901         }
 902 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
 903         {
 904         return NULL;
 905         }
 906 #endif
 907 #endif