1 /* ====================================================================
2 * Copyright (c) 2011-2013 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
50 #include <openssl/opensslconf.h>
55 #if !defined(OPENSSL_NO_AES) && !defined(OPENSSL_NO_SHA256)
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"
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
70 #if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1)
71 #define EVP_CIPH_FLAG_DEFAULT_ASN1 0
74 #if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
75 #define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
78 #define TLS1_1_VERSION 0x0302
83 SHA256_CTX head,tail,md;
84 size_t payload_length; /* AAD length in decrypt case */
87 unsigned char tls_aad[16]; /* 13 used */
89 } EVP_AES_HMAC_SHA256;
91 #define NO_PAYLOAD_LENGTH ((size_t)-1)
93 #if defined(AES_ASM) && ( \
94 defined(__x86_64) || defined(__x86_64__) || \
95 defined(_M_AMD64) || defined(_M_X64) || \
98 extern unsigned int OPENSSL_ia32cap_P[3];
99 #define AESNI_CAPABLE (1<<(57-32))
101 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
103 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
106 void aesni_cbc_encrypt(const unsigned char *in,
110 unsigned char *ivec, int enc);
112 int aesni_cbc_sha256_enc (const void *inp, void *out, size_t blocks,
113 const AES_KEY *key, unsigned char iv[16],
114 SHA256_CTX *ctx,const void *in0);
116 #define data(ctx) ((EVP_AES_HMAC_SHA256 *)(ctx)->cipher_data)
118 static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx,
119 const unsigned char *inkey,
120 const unsigned char *iv, int enc)
122 EVP_AES_HMAC_SHA256 *key = data(ctx);
126 memset(&key->ks,0,sizeof(key->ks.rd_key)),
127 ret=aesni_set_encrypt_key(inkey,ctx->key_len*8,&key->ks);
129 ret=aesni_set_decrypt_key(inkey,ctx->key_len*8,&key->ks);
131 SHA256_Init(&key->head); /* handy when benchmarking */
132 key->tail = key->head;
135 key->payload_length = NO_PAYLOAD_LENGTH;
140 #define STITCHED_CALL
142 #if !defined(STITCHED_CALL)
146 void sha256_block_data_order (void *c,const void *p,size_t len);
148 static void sha256_update(SHA256_CTX *c,const void *data,size_t len)
149 { const unsigned char *ptr = data;
152 if ((res = c->num)) {
153 res = SHA256_CBLOCK-res;
154 if (len<res) res=len;
155 SHA256_Update (c,ptr,res);
160 res = len % SHA256_CBLOCK;
164 sha256_block_data_order(c,ptr,len/SHA256_CBLOCK);
169 if (c->Nl<(unsigned int)len) c->Nh++;
173 SHA256_Update(c,ptr,res);
179 #define SHA256_Update sha256_update
181 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
183 typedef struct { unsigned int A[8],B[8],C[8],D[8],E[8],F[8],G[8],H[8]; } SHA256_MB_CTX;
184 typedef struct { const unsigned char *ptr; int blocks; } HASH_DESC;
186 void sha256_multi_block(SHA256_MB_CTX *,const HASH_DESC *,int);
188 typedef struct { const unsigned char *inp; unsigned char *out;
189 int blocks; u64 iv[2]; } CIPH_DESC;
191 void aesni_multi_cbc_encrypt(CIPH_DESC *,void *,int);
193 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key,
194 unsigned char *out, const unsigned char *inp, size_t inp_len,
195 int n4x) /* n4x is 1 or 2 */
197 HASH_DESC hash_d[8], edges[8];
199 unsigned char storage[sizeof(SHA256_MB_CTX)+32];
202 u8 c[128]; } blocks[8];
204 unsigned int frag, last, packlen, i, x4=4*n4x, minblocks, processed=0;
211 if (RAND_bytes((IVs=blocks[0].c),16*x4)<=0) /* ask for IVs in bulk */
214 ctx = (SHA256_MB_CTX *)(storage+32-((size_t)storage%32)); /* align */
216 frag = (unsigned int)inp_len>>(1+n4x);
217 last = (unsigned int)inp_len+frag-(frag<<(1+n4x));
218 if (last>frag && ((last+13+9)%64)<(x4-1)) {
223 packlen = 5+16+((frag+32+16)&-16);
225 /* populate descriptors with pointers and IVs */
228 ciph_d[0].out = out+5+16; /* 5+16 is place for header and explicit IV */
229 memcpy(ciph_d[0].out-16,IVs,16);
230 memcpy(ciph_d[0].iv,IVs,16); IVs += 16;
233 ciph_d[i].inp = hash_d[i].ptr = hash_d[i-1].ptr+frag;
234 ciph_d[i].out = ciph_d[i-1].out+packlen;
235 memcpy(ciph_d[i].out-16,IVs,16);
236 memcpy(ciph_d[i].iv,IVs,16); IVs+=16;
240 memcpy(blocks[0].c,key->md.data,8);
241 seqnum = BSWAP8(blocks[0].q[0]);
244 unsigned int len = (i==(x4-1)?last:frag);
246 unsigned int carry, j;
249 ctx->A[i] = key->md.h[0];
250 ctx->B[i] = key->md.h[1];
251 ctx->C[i] = key->md.h[2];
252 ctx->D[i] = key->md.h[3];
253 ctx->E[i] = key->md.h[4];
254 ctx->F[i] = key->md.h[5];
255 ctx->G[i] = key->md.h[6];
256 ctx->H[i] = key->md.h[7];
260 blocks[i].q[0] = BSWAP8(seqnum+i);
262 for (carry=i,j=8;j--;) {
263 blocks[i].c[j] = ((u8*)key->md.data)[j]+carry;
264 carry = (blocks[i].c[j]-carry)>>(sizeof(carry)*8-1);
267 blocks[i].c[8] = ((u8*)key->md.data)[8];
268 blocks[i].c[9] = ((u8*)key->md.data)[9];
269 blocks[i].c[10] = ((u8*)key->md.data)[10];
271 blocks[i].c[11] = (u8)(len>>8);
272 blocks[i].c[12] = (u8)(len);
274 memcpy(blocks[i].c+13,hash_d[i].ptr,64-13);
275 hash_d[i].ptr += 64-13;
276 hash_d[i].blocks = (len-(64-13))/64;
278 edges[i].ptr = blocks[i].c;
282 /* hash 13-byte headers and first 64-13 bytes of inputs */
283 sha256_multi_block(ctx,edges,n4x);
284 /* hash bulk inputs */
285 #define MAXCHUNKSIZE 2048
287 #error "MAXCHUNKSIZE is not divisible by 64"
289 /* goal is to minimize pressure on L1 cache by moving
290 * in shorter steps, so that hashed data is still in
291 * the cache by the time we encrypt it */
292 minblocks = ((frag<=last ? frag : last)-(64-13))/64;
293 if (minblocks>MAXCHUNKSIZE/64) {
295 edges[i].ptr = hash_d[i].ptr;
296 edges[i].blocks = MAXCHUNKSIZE/64;
297 ciph_d[i].blocks = MAXCHUNKSIZE/16;
300 sha256_multi_block(ctx,edges,n4x);
301 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
304 edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
305 hash_d[i].blocks -= MAXCHUNKSIZE/64;
306 edges[i].blocks = MAXCHUNKSIZE/64;
307 ciph_d[i].inp += MAXCHUNKSIZE;
308 ciph_d[i].out += MAXCHUNKSIZE;
309 ciph_d[i].blocks = MAXCHUNKSIZE/16;
310 memcpy(ciph_d[i].iv,ciph_d[i].out-16,16);
312 processed += MAXCHUNKSIZE;
313 minblocks -= MAXCHUNKSIZE/64;
314 } while (minblocks>MAXCHUNKSIZE/64);
318 sha256_multi_block(ctx,hash_d,n4x);
320 memset(blocks,0,sizeof(blocks));
322 unsigned int len = (i==(x4-1)?last:frag),
323 off = hash_d[i].blocks*64;
324 const unsigned char *ptr = hash_d[i].ptr+off;
326 off = (len-processed)-(64-13)-off; /* remainder actually */
327 memcpy(blocks[i].c,ptr,off);
328 blocks[i].c[off]=0x80;
329 len += 64+13; /* 64 is HMAC header */
330 len *= 8; /* convert to bits */
332 PUTU32(blocks[i].c+60,len);
335 PUTU32(blocks[i].c+124,len);
338 edges[i].ptr = blocks[i].c;
341 /* hash input tails and finalize */
342 sha256_multi_block(ctx,edges,n4x);
344 memset(blocks,0,sizeof(blocks));
346 PUTU32(blocks[i].c+0,ctx->A[i]); ctx->A[i] = key->tail.h[0];
347 PUTU32(blocks[i].c+4,ctx->B[i]); ctx->B[i] = key->tail.h[1];
348 PUTU32(blocks[i].c+8,ctx->C[i]); ctx->C[i] = key->tail.h[2];
349 PUTU32(blocks[i].c+12,ctx->D[i]); ctx->D[i] = key->tail.h[3];
350 PUTU32(blocks[i].c+16,ctx->E[i]); ctx->E[i] = key->tail.h[4];
351 PUTU32(blocks[i].c+20,ctx->F[i]); ctx->F[i] = key->tail.h[5];
352 PUTU32(blocks[i].c+24,ctx->G[i]); ctx->G[i] = key->tail.h[6];
353 PUTU32(blocks[i].c+28,ctx->H[i]); ctx->H[i] = key->tail.h[7];
354 blocks[i].c[32] = 0x80;
355 PUTU32(blocks[i].c+60,(64+32)*8);
356 edges[i].ptr = blocks[i].c;
361 sha256_multi_block(ctx,edges,n4x);
364 unsigned int len = (i==(x4-1)?last:frag), pad, j;
365 unsigned char *out0 = out;
367 memcpy(ciph_d[i].out,ciph_d[i].inp,len-processed);
368 ciph_d[i].inp = ciph_d[i].out;
373 PUTU32(out+0,ctx->A[i]);
374 PUTU32(out+4,ctx->B[i]);
375 PUTU32(out+8,ctx->C[i]);
376 PUTU32(out+12,ctx->D[i]);
377 PUTU32(out+16,ctx->E[i]);
378 PUTU32(out+20,ctx->F[i]);
379 PUTU32(out+24,ctx->G[i]);
380 PUTU32(out+28,ctx->H[i]);
386 for (j=0;j<=pad;j++) *(out++) = pad;
389 ciph_d[i].blocks = (len-processed)/16;
390 len += 16; /* account for explicit iv */
393 out0[0] = ((u8*)key->md.data)[8];
394 out0[1] = ((u8*)key->md.data)[9];
395 out0[2] = ((u8*)key->md.data)[10];
396 out0[3] = (u8)(len>>8);
403 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
405 OPENSSL_cleanse(blocks,sizeof(blocks));
406 OPENSSL_cleanse(ctx,sizeof(*ctx));
412 static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
413 const unsigned char *in, size_t len)
415 EVP_AES_HMAC_SHA256 *key = data(ctx);
417 size_t plen = key->payload_length,
418 iv = 0, /* explicit IV in TLS 1.1 and later */
420 #if defined(STITCHED_CALL)
424 sha_off = SHA256_CBLOCK-key->md.num;
427 key->payload_length = NO_PAYLOAD_LENGTH;
429 if (len%AES_BLOCK_SIZE) return 0;
432 if (plen==NO_PAYLOAD_LENGTH)
434 else if (len!=((plen+SHA256_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE))
436 else if (key->aux.tls_ver >= TLS1_1_VERSION)
439 #if defined(STITCHED_CALL)
440 if (OPENSSL_ia32cap_P[1]&(1<<(60-32)) && /* AVX? */
442 (blocks=(plen-(sha_off+iv))/SHA256_CBLOCK)) {
443 SHA256_Update(&key->md,in+iv,sha_off);
445 (void)aesni_cbc_sha256_enc(in,out,blocks,&key->ks,
446 ctx->iv,&key->md,in+iv+sha_off);
447 blocks *= SHA256_CBLOCK;
450 key->md.Nh += blocks>>29;
451 key->md.Nl += blocks<<=3;
452 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
458 SHA256_Update(&key->md,in+sha_off,plen-sha_off);
460 if (plen!=len) { /* "TLS" mode of operation */
462 memcpy(out+aes_off,in+aes_off,plen-aes_off);
464 /* calculate HMAC and append it to payload */
465 SHA256_Final(out+plen,&key->md);
467 SHA256_Update(&key->md,out+plen,SHA256_DIGEST_LENGTH);
468 SHA256_Final(out+plen,&key->md);
470 /* pad the payload|hmac */
471 plen += SHA256_DIGEST_LENGTH;
472 for (l=len-plen-1;plen<len;plen++) out[plen]=l;
473 /* encrypt HMAC|padding at once */
474 aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off,
477 aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off,
481 union { unsigned int u[SHA256_DIGEST_LENGTH/sizeof(unsigned int)];
482 unsigned char c[64+SHA256_DIGEST_LENGTH]; } mac, *pmac;
484 /* arrange cache line alignment */
485 pmac = (void *)(((size_t)mac.c+63)&((size_t)0-64));
487 /* decrypt HMAC|padding at once */
488 aesni_cbc_encrypt(in,out,len,
491 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
492 size_t inp_len, mask, j, i;
493 unsigned int res, maxpad, pad, bitlen;
495 union { unsigned int u[SHA_LBLOCK];
496 unsigned char c[SHA256_CBLOCK]; }
497 *data = (void *)key->md.data;
499 if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3])
503 if (len<(iv+SHA256_DIGEST_LENGTH+1))
506 /* omit explicit iv */
510 /* figure out payload length */
512 maxpad = len-(SHA256_DIGEST_LENGTH+1);
513 maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
516 inp_len = len - (SHA256_DIGEST_LENGTH+pad+1);
517 mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
521 key->aux.tls_aad[plen-2] = inp_len>>8;
522 key->aux.tls_aad[plen-1] = inp_len;
526 SHA256_Update(&key->md,key->aux.tls_aad,plen);
529 len -= SHA256_DIGEST_LENGTH; /* amend mac */
530 if (len>=(256+SHA256_CBLOCK)) {
531 j = (len-(256+SHA256_CBLOCK))&(0-SHA256_CBLOCK);
532 j += SHA256_CBLOCK-key->md.num;
533 SHA256_Update(&key->md,out,j);
539 /* but pretend as if we hashed padded payload */
540 bitlen = key->md.Nl+(inp_len<<3); /* at most 18 bits */
542 bitlen = BSWAP4(bitlen);
545 mac.c[1] = (unsigned char)(bitlen>>16);
546 mac.c[2] = (unsigned char)(bitlen>>8);
547 mac.c[3] = (unsigned char)bitlen;
560 for (res=key->md.num, j=0;j<len;j++) {
562 mask = (j-inp_len)>>(sizeof(j)*8-8);
564 c |= 0x80&~mask&~((inp_len-j)>>(sizeof(j)*8-8));
565 data->c[res++]=(unsigned char)c;
567 if (res!=SHA256_CBLOCK) continue;
569 /* j is not incremented yet */
570 mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
571 data->u[SHA_LBLOCK-1] |= bitlen&mask;
572 sha256_block_data_order(&key->md,data,1);
573 mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
574 pmac->u[0] |= key->md.h[0] & mask;
575 pmac->u[1] |= key->md.h[1] & mask;
576 pmac->u[2] |= key->md.h[2] & mask;
577 pmac->u[3] |= key->md.h[3] & mask;
578 pmac->u[4] |= key->md.h[4] & mask;
579 pmac->u[5] |= key->md.h[5] & mask;
580 pmac->u[6] |= key->md.h[6] & mask;
581 pmac->u[7] |= key->md.h[7] & mask;
585 for(i=res;i<SHA256_CBLOCK;i++,j++) data->c[i]=0;
587 if (res>SHA256_CBLOCK-8) {
588 mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
589 data->u[SHA_LBLOCK-1] |= bitlen&mask;
590 sha256_block_data_order(&key->md,data,1);
591 mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
592 pmac->u[0] |= key->md.h[0] & mask;
593 pmac->u[1] |= key->md.h[1] & mask;
594 pmac->u[2] |= key->md.h[2] & mask;
595 pmac->u[3] |= key->md.h[3] & mask;
596 pmac->u[4] |= key->md.h[4] & mask;
597 pmac->u[5] |= key->md.h[5] & mask;
598 pmac->u[6] |= key->md.h[6] & mask;
599 pmac->u[7] |= key->md.h[7] & mask;
601 memset(data,0,SHA256_CBLOCK);
604 data->u[SHA_LBLOCK-1] = bitlen;
605 sha256_block_data_order(&key->md,data,1);
606 mask = 0-((j-inp_len-73)>>(sizeof(j)*8-1));
607 pmac->u[0] |= key->md.h[0] & mask;
608 pmac->u[1] |= key->md.h[1] & mask;
609 pmac->u[2] |= key->md.h[2] & mask;
610 pmac->u[3] |= key->md.h[3] & mask;
611 pmac->u[4] |= key->md.h[4] & mask;
612 pmac->u[5] |= key->md.h[5] & mask;
613 pmac->u[6] |= key->md.h[6] & mask;
614 pmac->u[7] |= key->md.h[7] & mask;
617 pmac->u[0] = BSWAP4(pmac->u[0]);
618 pmac->u[1] = BSWAP4(pmac->u[1]);
619 pmac->u[2] = BSWAP4(pmac->u[2]);
620 pmac->u[3] = BSWAP4(pmac->u[3]);
621 pmac->u[4] = BSWAP4(pmac->u[4]);
622 pmac->u[5] = BSWAP4(pmac->u[5]);
623 pmac->u[6] = BSWAP4(pmac->u[6]);
624 pmac->u[7] = BSWAP4(pmac->u[7]);
628 pmac->c[4*i+0]=(unsigned char)(res>>24);
629 pmac->c[4*i+1]=(unsigned char)(res>>16);
630 pmac->c[4*i+2]=(unsigned char)(res>>8);
631 pmac->c[4*i+3]=(unsigned char)res;
634 len += SHA256_DIGEST_LENGTH;
636 SHA256_Update(&key->md,out,inp_len);
638 SHA256_Final(pmac->c,&key->md);
641 unsigned int inp_blocks, pad_blocks;
643 /* but pretend as if we hashed padded payload */
644 inp_blocks = 1+((SHA256_CBLOCK-9-res)>>(sizeof(res)*8-1));
645 res += (unsigned int)(len-inp_len);
646 pad_blocks = res / SHA256_CBLOCK;
647 res %= SHA256_CBLOCK;
648 pad_blocks += 1+((SHA256_CBLOCK-9-res)>>(sizeof(res)*8-1));
649 for (;inp_blocks<pad_blocks;inp_blocks++)
650 sha1_block_data_order(&key->md,data,1);
654 SHA256_Update(&key->md,pmac->c,SHA256_DIGEST_LENGTH);
655 SHA256_Final(pmac->c,&key->md);
662 unsigned char *p = out+len-1-maxpad-SHA256_DIGEST_LENGTH;
664 unsigned int c, cmask;
666 maxpad += SHA256_DIGEST_LENGTH;
667 for (res=0,i=0,j=0;j<maxpad;j++) {
669 cmask = ((int)(j-off-SHA256_DIGEST_LENGTH))>>(sizeof(int)*8-1);
670 res |= (c^pad)&~cmask; /* ... and padding */
671 cmask &= ((int)(off-1-j))>>(sizeof(int)*8-1);
672 res |= (c^pmac->c[i])&cmask;
675 maxpad -= SHA256_DIGEST_LENGTH;
677 res = 0-((0-res)>>(sizeof(res)*8-1));
681 for (res=0,i=0;i<SHA256_DIGEST_LENGTH;i++)
682 res |= out[i]^pmac->c[i];
683 res = 0-((0-res)>>(sizeof(res)*8-1));
687 pad = (pad&~res) | (maxpad&res);
689 for (res=0,i=0;i<pad;i++)
692 res = (0-res)>>(sizeof(res)*8-1);
697 SHA256_Update(&key->md,out,len);
704 static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
706 EVP_AES_HMAC_SHA256 *key = data(ctx);
710 case EVP_CTRL_AEAD_SET_MAC_KEY:
713 unsigned char hmac_key[64];
715 memset (hmac_key,0,sizeof(hmac_key));
717 if (arg > (int)sizeof(hmac_key)) {
718 SHA256_Init(&key->head);
719 SHA256_Update(&key->head,ptr,arg);
720 SHA256_Final(hmac_key,&key->head);
722 memcpy(hmac_key,ptr,arg);
725 for (i=0;i<sizeof(hmac_key);i++)
726 hmac_key[i] ^= 0x36; /* ipad */
727 SHA256_Init(&key->head);
728 SHA256_Update(&key->head,hmac_key,sizeof(hmac_key));
730 for (i=0;i<sizeof(hmac_key);i++)
731 hmac_key[i] ^= 0x36^0x5c; /* opad */
732 SHA256_Init(&key->tail);
733 SHA256_Update(&key->tail,hmac_key,sizeof(hmac_key));
735 OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
739 case EVP_CTRL_AEAD_TLS1_AAD:
741 unsigned char *p=ptr;
742 unsigned int len=p[arg-2]<<8|p[arg-1];
746 key->payload_length = len;
747 if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) {
748 len -= AES_BLOCK_SIZE;
753 SHA256_Update(&key->md,p,arg);
755 return (int)(((len+SHA256_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)
760 if (arg>13) arg = 13;
761 memcpy(key->aux.tls_aad,ptr,arg);
762 key->payload_length = arg;
764 return SHA256_DIGEST_LENGTH;
767 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
768 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
769 return (int)(5+16+((arg+32+16)&-16));
770 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
772 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
773 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
774 unsigned int n4x=1, x4;
775 unsigned int frag, last, packlen, inp_len;
777 if (arg<(int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) return -1;
779 inp_len = param->inp[11]<<8|param->inp[12];
783 if ((param->inp[9]<<8|param->inp[10]) < TLS1_1_VERSION)
788 if (inp_len<4096) return 0; /* too short */
790 if (inp_len>=8192 && OPENSSL_ia32cap_P[2]&(1<<5))
793 else if ((n4x=param->interleave/4) && n4x<=2)
794 inp_len = param->len;
799 SHA256_Update(&key->md,param->inp,13);
801 x4 = 4*n4x; n4x += 1;
804 last = inp_len+frag-(frag<<n4x);
805 if (last>frag && ((last+13+9)%64<(x4-1))) {
810 packlen = 5+16+((frag+32+16)&-16);
811 packlen = (packlen<<n4x)-packlen;
812 packlen += 5+16+((last+32+16)&-16);
814 param->interleave = x4;
819 return -1; /* not yet */
821 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
823 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
824 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
826 return (int)tls1_1_multi_block_encrypt(key,param->out,param->inp,
827 param->len,param->interleave/4);
829 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
836 static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher =
838 #ifdef NID_aes_128_cbc_hmac_sha256
839 NID_aes_128_cbc_hmac_sha256,
844 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
845 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
846 aesni_cbc_hmac_sha256_init_key,
847 aesni_cbc_hmac_sha256_cipher,
849 sizeof(EVP_AES_HMAC_SHA256),
850 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
851 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
852 aesni_cbc_hmac_sha256_ctrl,
856 static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher =
858 #ifdef NID_aes_256_cbc_hmac_sha256
859 NID_aes_256_cbc_hmac_sha256,
864 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
865 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
866 aesni_cbc_hmac_sha256_init_key,
867 aesni_cbc_hmac_sha256_cipher,
869 sizeof(EVP_AES_HMAC_SHA256),
870 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
871 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
872 aesni_cbc_hmac_sha256_ctrl,
876 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
878 return((OPENSSL_ia32cap_P[1]&AESNI_CAPABLE) &&
879 aesni_cbc_sha256_enc(NULL,NULL,0,NULL,NULL,NULL,NULL) ?
880 &aesni_128_cbc_hmac_sha256_cipher:NULL);
883 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)
885 return((OPENSSL_ia32cap_P[1]&AESNI_CAPABLE) &&
886 aesni_cbc_sha256_enc(NULL,NULL,0,NULL,NULL,NULL,NULL)?
887 &aesni_256_cbc_hmac_sha256_cipher:NULL);
890 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
894 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)