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 /* ask for IVs in bulk */
212 if (RAND_bytes((IVs=blocks[0].c),16*x4)<=0)
216 ctx = (SHA256_MB_CTX *)(storage+32-((size_t)storage%32));
218 frag = (unsigned int)inp_len>>(1+n4x);
219 last = (unsigned int)inp_len+frag-(frag<<(1+n4x));
220 if (last>frag && ((last+13+9)%64)<(x4-1)) {
225 packlen = 5+16+((frag+32+16)&-16);
227 /* populate descriptors with pointers and IVs */
230 ciph_d[0].out = out+5+16; /* 5+16 is place for header and explicit IV */
231 memcpy(ciph_d[0].out-16,IVs,16);
232 memcpy(ciph_d[0].iv,IVs,16); IVs += 16;
235 ciph_d[i].inp = hash_d[i].ptr = hash_d[i-1].ptr+frag;
236 ciph_d[i].out = ciph_d[i-1].out+packlen;
237 memcpy(ciph_d[i].out-16,IVs,16);
238 memcpy(ciph_d[i].iv,IVs,16); IVs+=16;
242 memcpy(blocks[0].c,key->md.data,8);
243 seqnum = BSWAP8(blocks[0].q[0]);
246 unsigned int len = (i==(x4-1)?last:frag);
248 unsigned int carry, j;
251 ctx->A[i] = key->md.h[0];
252 ctx->B[i] = key->md.h[1];
253 ctx->C[i] = key->md.h[2];
254 ctx->D[i] = key->md.h[3];
255 ctx->E[i] = key->md.h[4];
256 ctx->F[i] = key->md.h[5];
257 ctx->G[i] = key->md.h[6];
258 ctx->H[i] = key->md.h[7];
262 blocks[i].q[0] = BSWAP8(seqnum+i);
264 for (carry=i,j=8;j--;) {
265 blocks[i].c[j] = ((u8*)key->md.data)[j]+carry;
266 carry = (blocks[i].c[j]-carry)>>(sizeof(carry)*8-1);
269 blocks[i].c[8] = ((u8*)key->md.data)[8];
270 blocks[i].c[9] = ((u8*)key->md.data)[9];
271 blocks[i].c[10] = ((u8*)key->md.data)[10];
273 blocks[i].c[11] = (u8)(len>>8);
274 blocks[i].c[12] = (u8)(len);
276 memcpy(blocks[i].c+13,hash_d[i].ptr,64-13);
277 hash_d[i].ptr += 64-13;
278 hash_d[i].blocks = (len-(64-13))/64;
280 edges[i].ptr = blocks[i].c;
284 /* hash 13-byte headers and first 64-13 bytes of inputs */
285 sha256_multi_block(ctx,edges,n4x);
286 /* hash bulk inputs */
287 #define MAXCHUNKSIZE 2048
289 #error "MAXCHUNKSIZE is not divisible by 64"
291 /* goal is to minimize pressure on L1 cache by moving
292 * in shorter steps, so that hashed data is still in
293 * the cache by the time we encrypt it */
294 minblocks = ((frag<=last ? frag : last)-(64-13))/64;
295 if (minblocks>MAXCHUNKSIZE/64) {
297 edges[i].ptr = hash_d[i].ptr;
298 edges[i].blocks = MAXCHUNKSIZE/64;
299 ciph_d[i].blocks = MAXCHUNKSIZE/16;
302 sha256_multi_block(ctx,edges,n4x);
303 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
306 edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
307 hash_d[i].blocks -= MAXCHUNKSIZE/64;
308 edges[i].blocks = MAXCHUNKSIZE/64;
309 ciph_d[i].inp += MAXCHUNKSIZE;
310 ciph_d[i].out += MAXCHUNKSIZE;
311 ciph_d[i].blocks = MAXCHUNKSIZE/16;
312 memcpy(ciph_d[i].iv,ciph_d[i].out-16,16);
314 processed += MAXCHUNKSIZE;
315 minblocks -= MAXCHUNKSIZE/64;
316 } while (minblocks>MAXCHUNKSIZE/64);
320 sha256_multi_block(ctx,hash_d,n4x);
322 memset(blocks,0,sizeof(blocks));
324 unsigned int len = (i==(x4-1)?last:frag),
325 off = hash_d[i].blocks*64;
326 const unsigned char *ptr = hash_d[i].ptr+off;
328 off = (len-processed)-(64-13)-off; /* remainder actually */
329 memcpy(blocks[i].c,ptr,off);
330 blocks[i].c[off]=0x80;
331 len += 64+13; /* 64 is HMAC header */
332 len *= 8; /* convert to bits */
335 blocks[i].d[15] = BSWAP4(len);
337 PUTU32(blocks[i].c+60,len);
342 blocks[i].d[31] = BSWAP4(len);
344 PUTU32(blocks[i].c+124,len);
348 edges[i].ptr = blocks[i].c;
351 /* hash input tails and finalize */
352 sha256_multi_block(ctx,edges,n4x);
354 memset(blocks,0,sizeof(blocks));
357 blocks[i].d[0] = BSWAP4(ctx->A[i]); ctx->A[i] = key->tail.h[0];
358 blocks[i].d[1] = BSWAP4(ctx->B[i]); ctx->B[i] = key->tail.h[1];
359 blocks[i].d[2] = BSWAP4(ctx->C[i]); ctx->C[i] = key->tail.h[2];
360 blocks[i].d[3] = BSWAP4(ctx->D[i]); ctx->D[i] = key->tail.h[3];
361 blocks[i].d[4] = BSWAP4(ctx->E[i]); ctx->E[i] = key->tail.h[4];
362 blocks[i].d[5] = BSWAP4(ctx->F[i]); ctx->F[i] = key->tail.h[5];
363 blocks[i].d[6] = BSWAP4(ctx->G[i]); ctx->G[i] = key->tail.h[6];
364 blocks[i].d[7] = BSWAP4(ctx->H[i]); ctx->H[i] = key->tail.h[7];
365 blocks[i].c[32] = 0x80;
366 blocks[i].d[15] = BSWAP4((64+32)*8);
368 PUTU32(blocks[i].c+0,ctx->A[i]); ctx->A[i] = key->tail.h[0];
369 PUTU32(blocks[i].c+4,ctx->B[i]); ctx->B[i] = key->tail.h[1];
370 PUTU32(blocks[i].c+8,ctx->C[i]); ctx->C[i] = key->tail.h[2];
371 PUTU32(blocks[i].c+12,ctx->D[i]); ctx->D[i] = key->tail.h[3];
372 PUTU32(blocks[i].c+16,ctx->E[i]); ctx->E[i] = key->tail.h[4];
373 PUTU32(blocks[i].c+20,ctx->F[i]); ctx->F[i] = key->tail.h[5];
374 PUTU32(blocks[i].c+24,ctx->G[i]); ctx->G[i] = key->tail.h[6];
375 PUTU32(blocks[i].c+28,ctx->H[i]); ctx->H[i] = key->tail.h[7];
376 blocks[i].c[32] = 0x80;
377 PUTU32(blocks[i].c+60,(64+32)*8);
379 edges[i].ptr = blocks[i].c;
384 sha256_multi_block(ctx,edges,n4x);
387 unsigned int len = (i==(x4-1)?last:frag), pad, j;
388 unsigned char *out0 = out;
390 memcpy(ciph_d[i].out,ciph_d[i].inp,len-processed);
391 ciph_d[i].inp = ciph_d[i].out;
396 PUTU32(out+0,ctx->A[i]);
397 PUTU32(out+4,ctx->B[i]);
398 PUTU32(out+8,ctx->C[i]);
399 PUTU32(out+12,ctx->D[i]);
400 PUTU32(out+16,ctx->E[i]);
401 PUTU32(out+20,ctx->F[i]);
402 PUTU32(out+24,ctx->G[i]);
403 PUTU32(out+28,ctx->H[i]);
409 for (j=0;j<=pad;j++) *(out++) = pad;
412 ciph_d[i].blocks = (len-processed)/16;
413 len += 16; /* account for explicit iv */
416 out0[0] = ((u8*)key->md.data)[8];
417 out0[1] = ((u8*)key->md.data)[9];
418 out0[2] = ((u8*)key->md.data)[10];
419 out0[3] = (u8)(len>>8);
426 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
428 OPENSSL_cleanse(blocks,sizeof(blocks));
429 OPENSSL_cleanse(ctx,sizeof(*ctx));
435 static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
436 const unsigned char *in, size_t len)
438 EVP_AES_HMAC_SHA256 *key = data(ctx);
440 size_t plen = key->payload_length,
441 iv = 0, /* explicit IV in TLS 1.1 and later */
443 #if defined(STITCHED_CALL)
447 sha_off = SHA256_CBLOCK-key->md.num;
450 key->payload_length = NO_PAYLOAD_LENGTH;
452 if (len%AES_BLOCK_SIZE) return 0;
455 if (plen==NO_PAYLOAD_LENGTH)
457 else if (len!=((plen+SHA256_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE))
459 else if (key->aux.tls_ver >= TLS1_1_VERSION)
462 #if defined(STITCHED_CALL)
463 if (OPENSSL_ia32cap_P[1]&(1<<(60-32)) && /* AVX? */
465 (blocks=(plen-(sha_off+iv))/SHA256_CBLOCK)) {
466 SHA256_Update(&key->md,in+iv,sha_off);
468 (void)aesni_cbc_sha256_enc(in,out,blocks,&key->ks,
469 ctx->iv,&key->md,in+iv+sha_off);
470 blocks *= SHA256_CBLOCK;
473 key->md.Nh += blocks>>29;
474 key->md.Nl += blocks<<=3;
475 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
481 SHA256_Update(&key->md,in+sha_off,plen-sha_off);
483 if (plen!=len) { /* "TLS" mode of operation */
485 memcpy(out+aes_off,in+aes_off,plen-aes_off);
487 /* calculate HMAC and append it to payload */
488 SHA256_Final(out+plen,&key->md);
490 SHA256_Update(&key->md,out+plen,SHA256_DIGEST_LENGTH);
491 SHA256_Final(out+plen,&key->md);
493 /* pad the payload|hmac */
494 plen += SHA256_DIGEST_LENGTH;
495 for (l=len-plen-1;plen<len;plen++) out[plen]=l;
496 /* encrypt HMAC|padding at once */
497 aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off,
500 aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off,
504 union { unsigned int u[SHA256_DIGEST_LENGTH/sizeof(unsigned int)];
505 unsigned char c[64+SHA256_DIGEST_LENGTH]; } mac, *pmac;
507 /* arrange cache line alignment */
508 pmac = (void *)(((size_t)mac.c+63)&((size_t)0-64));
510 /* decrypt HMAC|padding at once */
511 aesni_cbc_encrypt(in,out,len,
514 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
515 size_t inp_len, mask, j, i;
516 unsigned int res, maxpad, pad, bitlen;
518 union { unsigned int u[SHA_LBLOCK];
519 unsigned char c[SHA256_CBLOCK]; }
520 *data = (void *)key->md.data;
522 if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3])
526 if (len<(iv+SHA256_DIGEST_LENGTH+1))
529 /* omit explicit iv */
533 /* figure out payload length */
535 maxpad = len-(SHA256_DIGEST_LENGTH+1);
536 maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
539 inp_len = len - (SHA256_DIGEST_LENGTH+pad+1);
540 mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
544 key->aux.tls_aad[plen-2] = inp_len>>8;
545 key->aux.tls_aad[plen-1] = inp_len;
549 SHA256_Update(&key->md,key->aux.tls_aad,plen);
552 len -= SHA256_DIGEST_LENGTH; /* amend mac */
553 if (len>=(256+SHA256_CBLOCK)) {
554 j = (len-(256+SHA256_CBLOCK))&(0-SHA256_CBLOCK);
555 j += SHA256_CBLOCK-key->md.num;
556 SHA256_Update(&key->md,out,j);
562 /* but pretend as if we hashed padded payload */
563 bitlen = key->md.Nl+(inp_len<<3); /* at most 18 bits */
565 bitlen = BSWAP4(bitlen);
568 mac.c[1] = (unsigned char)(bitlen>>16);
569 mac.c[2] = (unsigned char)(bitlen>>8);
570 mac.c[3] = (unsigned char)bitlen;
583 for (res=key->md.num, j=0;j<len;j++) {
585 mask = (j-inp_len)>>(sizeof(j)*8-8);
587 c |= 0x80&~mask&~((inp_len-j)>>(sizeof(j)*8-8));
588 data->c[res++]=(unsigned char)c;
590 if (res!=SHA256_CBLOCK) continue;
592 /* j is not incremented yet */
593 mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
594 data->u[SHA_LBLOCK-1] |= bitlen&mask;
595 sha256_block_data_order(&key->md,data,1);
596 mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
597 pmac->u[0] |= key->md.h[0] & mask;
598 pmac->u[1] |= key->md.h[1] & mask;
599 pmac->u[2] |= key->md.h[2] & mask;
600 pmac->u[3] |= key->md.h[3] & mask;
601 pmac->u[4] |= key->md.h[4] & mask;
602 pmac->u[5] |= key->md.h[5] & mask;
603 pmac->u[6] |= key->md.h[6] & mask;
604 pmac->u[7] |= key->md.h[7] & mask;
608 for(i=res;i<SHA256_CBLOCK;i++,j++) data->c[i]=0;
610 if (res>SHA256_CBLOCK-8) {
611 mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
612 data->u[SHA_LBLOCK-1] |= bitlen&mask;
613 sha256_block_data_order(&key->md,data,1);
614 mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
615 pmac->u[0] |= key->md.h[0] & mask;
616 pmac->u[1] |= key->md.h[1] & mask;
617 pmac->u[2] |= key->md.h[2] & mask;
618 pmac->u[3] |= key->md.h[3] & mask;
619 pmac->u[4] |= key->md.h[4] & mask;
620 pmac->u[5] |= key->md.h[5] & mask;
621 pmac->u[6] |= key->md.h[6] & mask;
622 pmac->u[7] |= key->md.h[7] & mask;
624 memset(data,0,SHA256_CBLOCK);
627 data->u[SHA_LBLOCK-1] = bitlen;
628 sha256_block_data_order(&key->md,data,1);
629 mask = 0-((j-inp_len-73)>>(sizeof(j)*8-1));
630 pmac->u[0] |= key->md.h[0] & mask;
631 pmac->u[1] |= key->md.h[1] & mask;
632 pmac->u[2] |= key->md.h[2] & mask;
633 pmac->u[3] |= key->md.h[3] & mask;
634 pmac->u[4] |= key->md.h[4] & mask;
635 pmac->u[5] |= key->md.h[5] & mask;
636 pmac->u[6] |= key->md.h[6] & mask;
637 pmac->u[7] |= key->md.h[7] & mask;
640 pmac->u[0] = BSWAP4(pmac->u[0]);
641 pmac->u[1] = BSWAP4(pmac->u[1]);
642 pmac->u[2] = BSWAP4(pmac->u[2]);
643 pmac->u[3] = BSWAP4(pmac->u[3]);
644 pmac->u[4] = BSWAP4(pmac->u[4]);
645 pmac->u[5] = BSWAP4(pmac->u[5]);
646 pmac->u[6] = BSWAP4(pmac->u[6]);
647 pmac->u[7] = BSWAP4(pmac->u[7]);
651 pmac->c[4*i+0]=(unsigned char)(res>>24);
652 pmac->c[4*i+1]=(unsigned char)(res>>16);
653 pmac->c[4*i+2]=(unsigned char)(res>>8);
654 pmac->c[4*i+3]=(unsigned char)res;
657 len += SHA256_DIGEST_LENGTH;
659 SHA256_Update(&key->md,out,inp_len);
661 SHA256_Final(pmac->c,&key->md);
664 unsigned int inp_blocks, pad_blocks;
666 /* but pretend as if we hashed padded payload */
667 inp_blocks = 1+((SHA256_CBLOCK-9-res)>>(sizeof(res)*8-1));
668 res += (unsigned int)(len-inp_len);
669 pad_blocks = res / SHA256_CBLOCK;
670 res %= SHA256_CBLOCK;
671 pad_blocks += 1+((SHA256_CBLOCK-9-res)>>(sizeof(res)*8-1));
672 for (;inp_blocks<pad_blocks;inp_blocks++)
673 sha1_block_data_order(&key->md,data,1);
677 SHA256_Update(&key->md,pmac->c,SHA256_DIGEST_LENGTH);
678 SHA256_Final(pmac->c,&key->md);
685 unsigned char *p = out+len-1-maxpad-SHA256_DIGEST_LENGTH;
687 unsigned int c, cmask;
689 maxpad += SHA256_DIGEST_LENGTH;
690 for (res=0,i=0,j=0;j<maxpad;j++) {
692 cmask = ((int)(j-off-SHA256_DIGEST_LENGTH))>>(sizeof(int)*8-1);
693 res |= (c^pad)&~cmask; /* ... and padding */
694 cmask &= ((int)(off-1-j))>>(sizeof(int)*8-1);
695 res |= (c^pmac->c[i])&cmask;
698 maxpad -= SHA256_DIGEST_LENGTH;
700 res = 0-((0-res)>>(sizeof(res)*8-1));
704 for (res=0,i=0;i<SHA256_DIGEST_LENGTH;i++)
705 res |= out[i]^pmac->c[i];
706 res = 0-((0-res)>>(sizeof(res)*8-1));
710 pad = (pad&~res) | (maxpad&res);
712 for (res=0,i=0;i<pad;i++)
715 res = (0-res)>>(sizeof(res)*8-1);
720 SHA256_Update(&key->md,out,len);
727 static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
729 EVP_AES_HMAC_SHA256 *key = data(ctx);
733 case EVP_CTRL_AEAD_SET_MAC_KEY:
736 unsigned char hmac_key[64];
738 memset (hmac_key,0,sizeof(hmac_key));
740 if (arg > (int)sizeof(hmac_key)) {
741 SHA256_Init(&key->head);
742 SHA256_Update(&key->head,ptr,arg);
743 SHA256_Final(hmac_key,&key->head);
745 memcpy(hmac_key,ptr,arg);
748 for (i=0;i<sizeof(hmac_key);i++)
749 hmac_key[i] ^= 0x36; /* ipad */
750 SHA256_Init(&key->head);
751 SHA256_Update(&key->head,hmac_key,sizeof(hmac_key));
753 for (i=0;i<sizeof(hmac_key);i++)
754 hmac_key[i] ^= 0x36^0x5c; /* opad */
755 SHA256_Init(&key->tail);
756 SHA256_Update(&key->tail,hmac_key,sizeof(hmac_key));
758 OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
762 case EVP_CTRL_AEAD_TLS1_AAD:
764 unsigned char *p=ptr;
765 unsigned int len=p[arg-2]<<8|p[arg-1];
769 key->payload_length = len;
770 if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) {
771 len -= AES_BLOCK_SIZE;
776 SHA256_Update(&key->md,p,arg);
778 return (int)(((len+SHA256_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)
783 if (arg>13) arg = 13;
784 memcpy(key->aux.tls_aad,ptr,arg);
785 key->payload_length = arg;
787 return SHA256_DIGEST_LENGTH;
790 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
791 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
792 return (int)(5+16+((arg+32+16)&-16));
793 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
795 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
796 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
797 unsigned int n4x=1, x4;
798 unsigned int frag, last, packlen, inp_len;
800 if (arg<(int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) return -1;
802 inp_len = param->inp[11]<<8|param->inp[12];
806 if ((param->inp[9]<<8|param->inp[10]) < TLS1_1_VERSION)
811 if (inp_len<4096) return 0; /* too short */
813 if (inp_len>=8192 && OPENSSL_ia32cap_P[2]&(1<<5))
816 else if ((n4x=param->interleave/4) && n4x<=2)
817 inp_len = param->len;
822 SHA256_Update(&key->md,param->inp,13);
824 x4 = 4*n4x; n4x += 1;
827 last = inp_len+frag-(frag<<n4x);
828 if (last>frag && ((last+13+9)%64<(x4-1))) {
833 packlen = 5+16+((frag+32+16)&-16);
834 packlen = (packlen<<n4x)-packlen;
835 packlen += 5+16+((last+32+16)&-16);
837 param->interleave = x4;
842 return -1; /* not yet */
844 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
846 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
847 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
849 return (int)tls1_1_multi_block_encrypt(key,param->out,param->inp,
850 param->len,param->interleave/4);
852 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
859 static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher =
861 #ifdef NID_aes_128_cbc_hmac_sha256
862 NID_aes_128_cbc_hmac_sha256,
867 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
868 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
869 aesni_cbc_hmac_sha256_init_key,
870 aesni_cbc_hmac_sha256_cipher,
872 sizeof(EVP_AES_HMAC_SHA256),
873 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
874 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
875 aesni_cbc_hmac_sha256_ctrl,
879 static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher =
881 #ifdef NID_aes_256_cbc_hmac_sha256
882 NID_aes_256_cbc_hmac_sha256,
887 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
888 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
889 aesni_cbc_hmac_sha256_init_key,
890 aesni_cbc_hmac_sha256_cipher,
892 sizeof(EVP_AES_HMAC_SHA256),
893 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
894 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
895 aesni_cbc_hmac_sha256_ctrl,
899 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
901 return((OPENSSL_ia32cap_P[1]&AESNI_CAPABLE) &&
902 aesni_cbc_sha256_enc(NULL,NULL,0,NULL,NULL,NULL,NULL) ?
903 &aesni_128_cbc_hmac_sha256_cipher:NULL);
906 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)
908 return((OPENSSL_ia32cap_P[1]&AESNI_CAPABLE) &&
909 aesni_cbc_sha256_enc(NULL,NULL,0,NULL,NULL,NULL,NULL)?
910 &aesni_256_cbc_hmac_sha256_cipher:NULL);
913 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
917 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)