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_TLS11_MULTI_BLOCK)
  75 #define EVP_CIPH_FLAG_TLS11_MULTI_BLOCK 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[2];
  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 #define data(ctx) ((EVP_AES_HMAC_SHA1 *)(ctx)->cipher_data)
 117
 118 static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
 119                         const unsigned char *inkey,
 120                         const unsigned char *iv, int enc)
 121         {
 122         EVP_AES_HMAC_SHA1 *key = data(ctx);
 123         int ret;
 124
 125         if (enc)
 126                 ret=aesni_set_encrypt_key(inkey,ctx->key_len*8,&key->ks);
 127         else
 128                 ret=aesni_set_decrypt_key(inkey,ctx->key_len*8,&key->ks);
 129
 130         SHA1_Init(&key->head);  /* handy when benchmarking */
 131         key->tail = key->head;
 132         key->md   = key->head;
 133
 134         key->payload_length = NO_PAYLOAD_LENGTH;
 135
 136         return ret<0?0:1;
 137         }
 138
 139 #define STITCHED_CALL
 140
 141 #if !defined(STITCHED_CALL)
 142 #define aes_off 0
 143 #endif
 144
 145 void sha1_block_data_order (void *c,const void *p,size_t len);
 146
 147 static void sha1_update(SHA_CTX *c,const void *data,size_t len)
 148 {       const unsigned char *ptr = data;
 149         size_t res;
 150
 151         if ((res = c->num)) {
 152                 res = SHA_CBLOCK-res;
 153                 if (len<res) res=len;
 154                 SHA1_Update (c,ptr,res);
 155                 ptr += res;
 156                 len -= res;
 157         }
 158
 159         res = len % SHA_CBLOCK;
 160         len -= res;
 161
 162         if (len) {
 163                 sha1_block_data_order(c,ptr,len/SHA_CBLOCK);
 164
 165                 ptr += len;
 166                 c->Nh += len>>29;
 167                 c->Nl += len<<=3;
 168                 if (c->Nl<(unsigned int)len) c->Nh++;
 169         }
 170
 171         if (res)
 172                 SHA1_Update(c,ptr,res);
 173 }
 174
 175 #ifdef SHA1_Update
 176 #undef SHA1_Update
 177 #endif
 178 #define SHA1_Update sha1_update
 179
 180 #if EVP_CIPH_FLAG_TLS11_MULTI_BLOCK
 181
 182 typedef struct { unsigned int A[8],B[8],C[8],D[8],E[8]; } SHA1_MB_CTX;
 183 typedef struct { const unsigned char *ptr; int blocks;  } HASH_DESC;
 184
 185 void sha1_multi_block(SHA1_MB_CTX *,const HASH_DESC *,int);
 186
 187 typedef struct { const unsigned char *inp; unsigned char *out;
 188                  int blocks; double iv[2]; } CIPH_DESC;
 189
 190 void aesni_multi_cbc_encrypt(CIPH_DESC *,void *,int);
 191
 192 static size_t tls11_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
 193         unsigned char *out, const unsigned char *inp, size_t inp_len,
 194         int n4x)        /* n4x is 1 or 2 */
 195 {
 196         HASH_DESC       hash_d[8], edges[8];
 197         CIPH_DESC       ciph_d[8];
 198         unsigned char   storage[sizeof(SHA1_MB_CTX)+32];
 199         union { u64     q[16];
 200                 u32     d[32];
 201                 u8      c[128]; } blocks[8];
 202         SHA1_MB_CTX     *ctx;
 203         unsigned int    frag, last, packlen, i, x4=4*n4x;
 204         size_t          ret = 0;
 205
 206         ctx = (SHA1_MB_CTX *)(storage+32-((size_t)storage%32)); /* align */
 207
 208         frag = (unsigned int)inp_len>>(1+n4x);
 209         last = (unsigned int)inp_len+frag-(frag<<(1+n4x));
 210         if (last>frag && ((last+13+9)%64)<(x4-1)) {
 211                 frag++;
 212                 last -= x4-1;
 213         }
 214
 215         hash_d[0].ptr = inp;
 216         for (i=1;i<x4;i++)      hash_d[i].ptr = hash_d[i-1].ptr+frag;
 217
 218         for (i=0;i<x4;i++) {
 219                 unsigned int len = (i==(x4-1)?last:frag);
 220
 221                 ctx->A[i] = key->md.h0;
 222                 ctx->B[i] = key->md.h1;
 223                 ctx->C[i] = key->md.h2;
 224                 ctx->D[i] = key->md.h3;
 225                 ctx->E[i] = key->md.h4;
 226
 227                 /* fix seqnum */
 228 #if defined(BSWAP8)
 229                 blocks[i].q[0] = BSWAP8(BSWAP8(*(u64*)key->md.data)+i);
 230 #else
 231                 blocks[i].c[7] += key->md.data[7]+i;
 232                 if (blocks[i].c[7] < i) {
 233                         int j;
 234
 235                         for (j=6;j>=0;j--) {
 236                                 if (blocks[i].c[j]=key->md.data[j]+1) break;
 237                         }
 238                 }
 239 #endif
 240                 blocks[i].c[8] = key->md.data[8];
 241                 blocks[i].c[9] = key->md.data[9];
 242                 blocks[i].c[10] = key->md.data[10];
 243                 /* fix length */
 244                 blocks[i].c[11] = (unsigned char)(len>>8);
 245                 blocks[i].c[12] = (unsigned char)(len);
 246
 247                 memcpy(blocks[i].c+13,hash_d[i].ptr,64-13);
 248                 hash_d[i].ptr += 64-13;
 249                 hash_d[i].blocks = (len-(64-13))/64;
 250
 251                 edges[i].ptr = blocks[i].c;
 252                 edges[i].blocks = 1;
 253         }
 254
 255         sha1_multi_block(ctx,edges,n4x);
 256         sha1_multi_block(ctx,hash_d,n4x);
 257
 258         memset(blocks,0,sizeof(blocks));
 259         for (i=0;i<x4;i++) {
 260                 unsigned int            len = (i==(x4-1)?last:frag),
 261                                         off = hash_d[i].blocks*64;
 262                 const unsigned char    *ptr = hash_d[i].ptr+off;
 263
 264                 off = len-(64-13)-off;  /* remainder actually */
 265                 memcpy(blocks[i].c,ptr,off);
 266                 blocks[i].c[off]=0x80;
 267                 len += 64+13;           /* 64 is HMAC header */
 268                 len *= 8;               /* convert to bits */
 269                 if (off<(64-8)) {
 270                         blocks[i].d[15] = BSWAP4(len);
 271                         edges[i].blocks = 1;
 272                 } else {
 273                         blocks[i].d[31] = BSWAP4(len);
 274                         edges[i].blocks = 2;
 275                 }
 276                 edges[i].ptr = blocks[i].c;
 277         }
 278
 279         sha1_multi_block(ctx,edges,n4x);
 280
 281         memset(blocks,0,sizeof(blocks));
 282         for (i=0;i<x4;i++) {
 283                 blocks[i].d[0] = BSWAP4(ctx->A[i]);     ctx->A[i] = key->tail.h0;
 284                 blocks[i].d[1] = BSWAP4(ctx->B[i]);     ctx->B[i] = key->tail.h1;
 285                 blocks[i].d[2] = BSWAP4(ctx->C[i]);     ctx->C[i] = key->tail.h2;
 286                 blocks[i].d[3] = BSWAP4(ctx->D[i]);     ctx->D[i] = key->tail.h3;
 287                 blocks[i].d[4] = BSWAP4(ctx->E[i]);     ctx->E[i] = key->tail.h4;
 288                 blocks[i].c[20] = 0x80;
 289                 blocks[i].d[15] = BSWAP4((64+20)*8);
 290                 edges[i].ptr = blocks[i].c;
 291                 edges[i].blocks = 1;
 292         }
 293
 294         sha1_multi_block(ctx,edges,n4x);
 295
 296         packlen = 5+16+((frag+20+16)&-16);
 297
 298         out += (packlen<<(1+n4x))-packlen;
 299         inp += (frag<<(1+n4x))-frag;
 300
 301         for (i=x4-1;;i--) {
 302                 unsigned int len = (i==(x4-1)?last:frag), pad, j;
 303                 unsigned char *out0 = out;
 304
 305                 out += 5+16;            /* place for header and explicit IV */
 306                 ciph_d[i].inp = out;
 307                 ciph_d[i].out = out;
 308
 309                 memmove(out,inp,len);
 310                 out += len;
 311                 inp -= frag;
 312
 313                 ((u32 *)out)[0] = BSWAP4(ctx->A[i]);
 314                 ((u32 *)out)[1] = BSWAP4(ctx->B[i]);
 315                 ((u32 *)out)[2] = BSWAP4(ctx->C[i]);
 316                 ((u32 *)out)[3] = BSWAP4(ctx->D[i]);
 317                 ((u32 *)out)[4] = BSWAP4(ctx->E[i]);
 318                 out += 20;
 319                 len += 20+16;
 320
 321                 pad = 15-len%16;
 322                 for (j=0;j<=pad;j++) *(out++) = pad;
 323                 len += pad+1;
 324
 325                 ciph_d[i].blocks = len/16;
 326
 327                 /* arrange header */
 328                 out0[0] = key->md.data[8];
 329                 out0[1] = key->md.data[9];
 330                 out0[2] = key->md.data[10];
 331                 out0[3] = (unsigned char)(len>>8);
 332                 out0[4] = (unsigned char)(len);
 333
 334                 /* explicit iv */
 335                 RAND_bytes((u8 *)ciph_d[i].iv, 16);
 336                 memcpy(&out[5], ciph_d[i].iv, 16);
 337
 338                 ret += len+5;
 339
 340                 if (i==0) break;
 341
 342                 out = out0-packlen;
 343         }
 344
 345         aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
 346
 347         return ret;
 348 }
 349 #endif
 350
 351 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 352                       const unsigned char *in, size_t len)
 353         {
 354         EVP_AES_HMAC_SHA1 *key = data(ctx);
 355         unsigned int l;
 356         size_t  plen = key->payload_length,
 357                 iv = 0,         /* explicit IV in TLS 1.1 and later */
 358                 sha_off = 0;
 359 #if defined(STITCHED_CALL)
 360         size_t  aes_off = 0,
 361                 blocks;
 362
 363         sha_off = SHA_CBLOCK-key->md.num;
 364 #endif
 365
 366         key->payload_length = NO_PAYLOAD_LENGTH;
 367
 368         if (len%AES_BLOCK_SIZE) return 0;
 369
 370         if (ctx->encrypt) {
 371                 if (plen==NO_PAYLOAD_LENGTH)
 372                         plen = len;
 373                 else if (len!=((plen+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE))
 374                         return 0;
 375                 else if (key->aux.tls_ver >= TLS1_1_VERSION)
 376                         iv = AES_BLOCK_SIZE;
 377
 378 #if defined(STITCHED_CALL)
 379                 if (plen>(sha_off+iv) && (blocks=(plen-(sha_off+iv))/SHA_CBLOCK)) {
 380                         SHA1_Update(&key->md,in+iv,sha_off);
 381
 382                         aesni_cbc_sha1_enc(in,out,blocks,&key->ks,
 383                                 ctx->iv,&key->md,in+iv+sha_off);
 384                         blocks *= SHA_CBLOCK;
 385                         aes_off += blocks;
 386                         sha_off += blocks;
 387                         key->md.Nh += blocks>>29;
 388                         key->md.Nl += blocks<<=3;
 389                         if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
 390                 } else {
 391                         sha_off = 0;
 392                 }
 393 #endif
 394                 sha_off += iv;
 395                 SHA1_Update(&key->md,in+sha_off,plen-sha_off);
 396
 397                 if (plen!=len)  {       /* "TLS" mode of operation */
 398                         if (in!=out)
 399                                 memcpy(out+aes_off,in+aes_off,plen-aes_off);
 400
 401                         /* calculate HMAC and append it to payload */
 402                         SHA1_Final(out+plen,&key->md);
 403                         key->md = key->tail;
 404                         SHA1_Update(&key->md,out+plen,SHA_DIGEST_LENGTH);
 405                         SHA1_Final(out+plen,&key->md);
 406
 407                         /* pad the payload|hmac */
 408                         plen += SHA_DIGEST_LENGTH;
 409                         for (l=len-plen-1;plen<len;plen++) out[plen]=l;
 410                         /* encrypt HMAC|padding at once */
 411                         aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off,
 412                                         &key->ks,ctx->iv,1);
 413                 } else {
 414                         aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off,
 415                                         &key->ks,ctx->iv,1);
 416                 }
 417         } else {
 418                 union { unsigned int  u[SHA_DIGEST_LENGTH/sizeof(unsigned int)];
 419                         unsigned char c[32+SHA_DIGEST_LENGTH]; } mac, *pmac;
 420
 421                 /* arrange cache line alignment */
 422                 pmac = (void *)(((size_t)mac.c+31)&((size_t)0-32));
 423
 424                 /* decrypt HMAC|padding at once */
 425                 aesni_cbc_encrypt(in,out,len,
 426                                 &key->ks,ctx->iv,0);
 427
 428                 if (plen) {     /* "TLS" mode of operation */
 429                         size_t inp_len, mask, j, i;
 430                         unsigned int res, maxpad, pad, bitlen;
 431                         int ret = 1;
 432                         union { unsigned int  u[SHA_LBLOCK];
 433                                 unsigned char c[SHA_CBLOCK]; }
 434                                 *data = (void *)key->md.data;
 435
 436                         if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3])
 437                             >= TLS1_1_VERSION)
 438                                 iv = AES_BLOCK_SIZE;
 439
 440                         if (len<(iv+SHA_DIGEST_LENGTH+1))
 441                                 return 0;
 442
 443                         /* omit explicit iv */
 444                         out += iv;
 445                         len -= iv;
 446
 447                         /* figure out payload length */
 448                         pad = out[len-1];
 449                         maxpad = len-(SHA_DIGEST_LENGTH+1);
 450                         maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
 451                         maxpad &= 255;
 452
 453                         inp_len = len - (SHA_DIGEST_LENGTH+pad+1);
 454                         mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
 455                         inp_len &= mask;
 456                         ret &= (int)mask;
 457
 458                         key->aux.tls_aad[plen-2] = inp_len>>8;
 459                         key->aux.tls_aad[plen-1] = inp_len;
 460
 461                         /* calculate HMAC */
 462                         key->md = key->head;
 463                         SHA1_Update(&key->md,key->aux.tls_aad,plen);
 464
 465 #if 1
 466                         len -= SHA_DIGEST_LENGTH;               /* amend mac */
 467                         if (len>=(256+SHA_CBLOCK)) {
 468                                 j = (len-(256+SHA_CBLOCK))&(0-SHA_CBLOCK);
 469                                 j += SHA_CBLOCK-key->md.num;
 470                                 SHA1_Update(&key->md,out,j);
 471                                 out += j;
 472                                 len -= j;
 473                                 inp_len -= j;
 474                         }
 475
 476                         /* but pretend as if we hashed padded payload */
 477                         bitlen = key->md.Nl+(inp_len<<3);       /* at most 18 bits */
 478 #ifdef BSWAP4
 479                         bitlen = BSWAP4(bitlen);
 480 #else
 481                         mac.c[0] = 0;
 482                         mac.c[1] = (unsigned char)(bitlen>>16);
 483                         mac.c[2] = (unsigned char)(bitlen>>8);
 484                         mac.c[3] = (unsigned char)bitlen;
 485                         bitlen = mac.u[0];
 486 #endif
 487
 488                         pmac->u[0]=0;
 489                         pmac->u[1]=0;
 490                         pmac->u[2]=0;
 491                         pmac->u[3]=0;
 492                         pmac->u[4]=0;
 493
 494                         for (res=key->md.num, j=0;j<len;j++) {
 495                                 size_t c = out[j];
 496                                 mask = (j-inp_len)>>(sizeof(j)*8-8);
 497                                 c &= mask;
 498                                 c |= 0x80&~mask&~((inp_len-j)>>(sizeof(j)*8-8));
 499                                 data->c[res++]=(unsigned char)c;
 500
 501                                 if (res!=SHA_CBLOCK) continue;
 502
 503                                 /* j is not incremented yet */
 504                                 mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
 505                                 data->u[SHA_LBLOCK-1] |= bitlen&mask;
 506                                 sha1_block_data_order(&key->md,data,1);
 507                                 mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
 508                                 pmac->u[0] |= key->md.h0 & mask;
 509                                 pmac->u[1] |= key->md.h1 & mask;
 510                                 pmac->u[2] |= key->md.h2 & mask;
 511                                 pmac->u[3] |= key->md.h3 & mask;
 512                                 pmac->u[4] |= key->md.h4 & mask;
 513                                 res=0;
 514                         }
 515
 516                         for(i=res;i<SHA_CBLOCK;i++,j++) data->c[i]=0;
 517
 518                         if (res>SHA_CBLOCK-8) {
 519                                 mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
 520                                 data->u[SHA_LBLOCK-1] |= bitlen&mask;
 521                                 sha1_block_data_order(&key->md,data,1);
 522                                 mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
 523                                 pmac->u[0] |= key->md.h0 & mask;
 524                                 pmac->u[1] |= key->md.h1 & mask;
 525                                 pmac->u[2] |= key->md.h2 & mask;
 526                                 pmac->u[3] |= key->md.h3 & mask;
 527                                 pmac->u[4] |= key->md.h4 & mask;
 528
 529                                 memset(data,0,SHA_CBLOCK);
 530                                 j+=64;
 531                         }
 532                         data->u[SHA_LBLOCK-1] = bitlen;
 533                         sha1_block_data_order(&key->md,data,1);
 534                         mask = 0-((j-inp_len-73)>>(sizeof(j)*8-1));
 535                         pmac->u[0] |= key->md.h0 & mask;
 536                         pmac->u[1] |= key->md.h1 & mask;
 537                         pmac->u[2] |= key->md.h2 & mask;
 538                         pmac->u[3] |= key->md.h3 & mask;
 539                         pmac->u[4] |= key->md.h4 & mask;
 540
 541 #ifdef BSWAP4
 542                         pmac->u[0] = BSWAP4(pmac->u[0]);
 543                         pmac->u[1] = BSWAP4(pmac->u[1]);
 544                         pmac->u[2] = BSWAP4(pmac->u[2]);
 545                         pmac->u[3] = BSWAP4(pmac->u[3]);
 546                         pmac->u[4] = BSWAP4(pmac->u[4]);
 547 #else
 548                         for (i=0;i<5;i++) {
 549                                 res = pmac->u[i];
 550                                 pmac->c[4*i+0]=(unsigned char)(res>>24);
 551                                 pmac->c[4*i+1]=(unsigned char)(res>>16);
 552                                 pmac->c[4*i+2]=(unsigned char)(res>>8);
 553                                 pmac->c[4*i+3]=(unsigned char)res;
 554                         }
 555 #endif
 556                         len += SHA_DIGEST_LENGTH;
 557 #else
 558                         SHA1_Update(&key->md,out,inp_len);
 559                         res = key->md.num;
 560                         SHA1_Final(pmac->c,&key->md);
 561
 562                         {
 563                         unsigned int inp_blocks, pad_blocks;
 564
 565                         /* but pretend as if we hashed padded payload */
 566                         inp_blocks = 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
 567                         res += (unsigned int)(len-inp_len);
 568                         pad_blocks = res / SHA_CBLOCK;
 569                         res %= SHA_CBLOCK;
 570                         pad_blocks += 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
 571                         for (;inp_blocks<pad_blocks;inp_blocks++)
 572                                 sha1_block_data_order(&key->md,data,1);
 573                         }
 574 #endif
 575                         key->md = key->tail;
 576                         SHA1_Update(&key->md,pmac->c,SHA_DIGEST_LENGTH);
 577                         SHA1_Final(pmac->c,&key->md);
 578
 579                         /* verify HMAC */
 580                         out += inp_len;
 581                         len -= inp_len;
 582 #if 1
 583                         {
 584                         unsigned char *p = out+len-1-maxpad-SHA_DIGEST_LENGTH;
 585                         size_t off = out-p;
 586                         unsigned int c, cmask;
 587
 588                         maxpad += SHA_DIGEST_LENGTH;
 589                         for (res=0,i=0,j=0;j<maxpad;j++) {
 590                                 c = p[j];
 591                                 cmask = ((int)(j-off-SHA_DIGEST_LENGTH))>>(sizeof(int)*8-1);
 592                                 res |= (c^pad)&~cmask;  /* ... and padding */
 593                                 cmask &= ((int)(off-1-j))>>(sizeof(int)*8-1);
 594                                 res |= (c^pmac->c[i])&cmask;
 595                                 i += 1&cmask;
 596                         }
 597                         maxpad -= SHA_DIGEST_LENGTH;
 598
 599                         res = 0-((0-res)>>(sizeof(res)*8-1));
 600                         ret &= (int)~res;
 601                         }
 602 #else
 603                         for (res=0,i=0;i<SHA_DIGEST_LENGTH;i++)
 604                                 res |= out[i]^pmac->c[i];
 605                         res = 0-((0-res)>>(sizeof(res)*8-1));
 606                         ret &= (int)~res;
 607
 608                         /* verify padding */
 609                         pad = (pad&~res) | (maxpad&res);
 610                         out = out+len-1-pad;
 611                         for (res=0,i=0;i<pad;i++)
 612                                 res |= out[i]^pad;
 613
 614                         res = (0-res)>>(sizeof(res)*8-1);
 615                         ret &= (int)~res;
 616 #endif
 617                         return ret;
 618                 } else {
 619                         SHA1_Update(&key->md,out,len);
 620                 }
 621         }
 622
 623         return 1;
 624         }
 625
 626 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
 627         {
 628         EVP_AES_HMAC_SHA1 *key = data(ctx);
 629
 630         switch (type)
 631                 {
 632         case EVP_CTRL_AEAD_SET_MAC_KEY:
 633                 {
 634                 unsigned int  i;
 635                 unsigned char hmac_key[64];
 636
 637                 memset (hmac_key,0,sizeof(hmac_key));
 638
 639                 if (arg > (int)sizeof(hmac_key)) {
 640                         SHA1_Init(&key->head);
 641                         SHA1_Update(&key->head,ptr,arg);
 642                         SHA1_Final(hmac_key,&key->head);
 643                 } else {
 644                         memcpy(hmac_key,ptr,arg);
 645                 }
 646
 647                 for (i=0;i<sizeof(hmac_key);i++)
 648                         hmac_key[i] ^= 0x36;            /* ipad */
 649                 SHA1_Init(&key->head);
 650                 SHA1_Update(&key->head,hmac_key,sizeof(hmac_key));
 651
 652                 for (i=0;i<sizeof(hmac_key);i++)
 653                         hmac_key[i] ^= 0x36^0x5c;       /* opad */
 654                 SHA1_Init(&key->tail);
 655                 SHA1_Update(&key->tail,hmac_key,sizeof(hmac_key));
 656
 657                 OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
 658
 659                 return 1;
 660                 }
 661         case EVP_CTRL_AEAD_TLS1_AAD:
 662                 {
 663                 unsigned char *p=ptr;
 664                 unsigned int   len=p[arg-2]<<8|p[arg-1];
 665
 666                 if (ctx->encrypt)
 667                         {
 668                         key->payload_length = len;
 669                         if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) {
 670                                 len -= AES_BLOCK_SIZE;
 671                                 p[arg-2] = len>>8;
 672                                 p[arg-1] = len;
 673                         }
 674                         key->md = key->head;
 675                         SHA1_Update(&key->md,p,arg);
 676
 677                         return (int)(((len+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)
 678                                 - len);
 679                         }
 680                 else
 681                         {
 682                         if (arg>13) arg = 13;
 683                         memcpy(key->aux.tls_aad,ptr,arg);
 684                         key->payload_length = arg;
 685
 686                         return SHA_DIGEST_LENGTH;
 687                         }
 688                 }
 689 #if EVP_EVP_CIPH_FLAG_TLS11_MULTI_BLOCK
 690         case EVP_CTRL_TLS11_MULTI_BLOCK_AAD:
 691                 {
 692                 EVP_CTRL_TLS11_MULTI_BLOCK_PARAM *param =
 693                         (EVP_CTRL_TLS11_MULTI_BLOCK_PARAM *)ptr;
 694                 unsigned int n4x=1, x4;
 695                 unsigned int frag, last, packlen, inp_len;
 696
 697                 if (arg<sizeof(EVP_CTRL_TLS11_MULTI_BLOCK_PARAM)) return -1;
 698
 699                 inp_len = param->inp[11]<<8|param->inp[12];
 700
 701                 if (ctx->encrypt)
 702                         {
 703                         if ((param->inp[9]<<8|param->inp[10]) < TLS1_1_VERSION)
 704                                 return -1;
 705
 706                         if (inp_len<2048) return -1;    /* too short */
 707
 708                         if (inp_len>=6144) n4x=2;
 709
 710                         key->md = key->head;
 711                         SHA1_Update(&key->md,param->inp,13);
 712
 713                         x4 = 4*n4x; n4x += 1;
 714
 715                         frag = inp_len>>n4x;
 716                         last = inp_len+frag-(frag<<n4x);
 717                         if (last>frag && ((last+13+9)%64<(x4-1))) {
 718                                 frag++;
 719                                 last -= x4-1;
 720                         }
 721
 722                         packlen = 5+16+((frag+20+16)&-16);
 723                         packlen = (packlen<<(1+n4x))-packlen;
 724                         packlen += 5+16+((last+20+16)&-16);
 725
 726                         param->interleave = x4;
 727
 728                         return (int)packlen;
 729                         }
 730                 else
 731                         return -1;      /* not yet */
 732                 }
 733         case EVP_CTRL_TLS11_MULTI_BLOCK_ENCRYPT:
 734                 {
 735                 EVP_CTRL_TLS11_MULTI_BLOCK_PARAM *param =
 736                         (EVP_CTRL_TLS11_MULTI_BLOCK_PARAM *)ptr;
 737
 738                 return tls11_multi_block_encrypt(key,param->out,param->inp,
 739                                                 param->len,param->interleave/4);
 740                 }
 741         case EVP_CTRL_TLS11_MULTI_BLOCK_DECRYPT:
 742 #endif
 743         default:
 744                 return -1;
 745                 }
 746         }
 747
 748 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher =
 749         {
 750 #ifdef NID_aes_128_cbc_hmac_sha1
 751         NID_aes_128_cbc_hmac_sha1,
 752 #else
 753         NID_undef,
 754 #endif
 755         16,16,16,
 756         EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
 757         EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS11_MULTI_BLOCK,
 758         aesni_cbc_hmac_sha1_init_key,
 759         aesni_cbc_hmac_sha1_cipher,
 760         NULL,
 761         sizeof(EVP_AES_HMAC_SHA1),
 762         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
 763         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
 764         aesni_cbc_hmac_sha1_ctrl,
 765         NULL
 766         };
 767
 768 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher =
 769         {
 770 #ifdef NID_aes_256_cbc_hmac_sha1
 771         NID_aes_256_cbc_hmac_sha1,
 772 #else
 773         NID_undef,
 774 #endif
 775         16,32,16,
 776         EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
 777         EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS11_MULTI_BLOCK,
 778         aesni_cbc_hmac_sha1_init_key,
 779         aesni_cbc_hmac_sha1_cipher,
 780         NULL,
 781         sizeof(EVP_AES_HMAC_SHA1),
 782         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
 783         EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
 784         aesni_cbc_hmac_sha1_ctrl,
 785         NULL
 786         };
 787
 788 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
 789         {
 790         return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
 791                 &aesni_128_cbc_hmac_sha1_cipher:NULL);
 792         }
 793
 794 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
 795         {
 796         return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
 797                 &aesni_256_cbc_hmac_sha1_cipher:NULL);
 798         }
 799 #else
 800 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
 801         {
 802         return NULL;
 803         }
 804 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
 805         {
 806         return NULL;
 807         }
 808 #endif
 809 #endif