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_SHA1)
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
84 size_t payload_length; /* AAD length in decrypt case */
87 unsigned char tls_aad[16]; /* 13 used */
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 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);
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);
120 #define data(ctx) ((EVP_AES_HMAC_SHA1 *)(ctx)->cipher_data)
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)
126 EVP_AES_HMAC_SHA1 *key = data(ctx);
130 ret=aesni_set_encrypt_key(inkey,ctx->key_len*8,&key->ks);
132 ret=aesni_set_decrypt_key(inkey,ctx->key_len*8,&key->ks);
134 SHA1_Init(&key->head); /* handy when benchmarking */
135 key->tail = key->head;
138 key->payload_length = NO_PAYLOAD_LENGTH;
143 #define STITCHED_CALL
144 #undef STITCHED_DECRYPT_CALL
146 #if !defined(STITCHED_CALL)
150 void sha1_block_data_order (void *c,const void *p,size_t len);
152 static void sha1_update(SHA_CTX *c,const void *data,size_t len)
153 { const unsigned char *ptr = data;
156 if ((res = c->num)) {
157 res = SHA_CBLOCK-res;
158 if (len<res) res=len;
159 SHA1_Update (c,ptr,res);
164 res = len % SHA_CBLOCK;
168 sha1_block_data_order(c,ptr,len/SHA_CBLOCK);
173 if (c->Nl<(unsigned int)len) c->Nh++;
177 SHA1_Update(c,ptr,res);
183 #define SHA1_Update sha1_update
185 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
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;
190 void sha1_multi_block(SHA1_MB_CTX *,const HASH_DESC *,int);
192 typedef struct { const unsigned char *inp; unsigned char *out;
193 int blocks; u64 iv[2]; } CIPH_DESC;
195 void aesni_multi_cbc_encrypt(CIPH_DESC *,void *,int);
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 */
201 HASH_DESC hash_d[8], edges[8];
203 unsigned char storage[sizeof(SHA1_MB_CTX)+32];
206 u8 c[128]; } blocks[8];
208 unsigned int frag, last, packlen, i, x4=4*n4x, minblocks, processed=0;
214 unsigned int carry,j;
217 if (RAND_bytes((IVs=blocks[0].c),16*x4)<=0) /* ask for IVs in bulk */
220 ctx = (SHA1_MB_CTX *)(storage+32-((size_t)storage%32)); /* align */
222 frag = (unsigned int)inp_len>>(1+n4x);
223 last = (unsigned int)inp_len+frag-(frag<<(1+n4x));
224 if (last>frag && ((last+13+9)%64)<(x4-1)) {
229 packlen = 5+16+((frag+20+16)&-16);
231 /* populate descriptors with pointers and IVs */
234 ciph_d[0].out = out+5+16; /* 5+16 is place for header and explicit IV */
235 memcpy(ciph_d[0].out-16,IVs,16);
236 memcpy(ciph_d[0].iv,IVs,16); IVs += 16;
239 ciph_d[i].inp = hash_d[i].ptr = hash_d[i-1].ptr+frag;
240 ciph_d[i].out = ciph_d[i-1].out+packlen;
241 memcpy(ciph_d[i].out-16,IVs,16);
242 memcpy(ciph_d[i].iv,IVs,16); IVs+=16;
246 memcpy(blocks[0].c,key->md.data,8);
247 seqnum = BSWAP8(blocks[0].q[0]);
250 unsigned int len = (i==(x4-1)?last:frag);
252 ctx->A[i] = key->md.h0;
253 ctx->B[i] = key->md.h1;
254 ctx->C[i] = key->md.h2;
255 ctx->D[i] = key->md.h3;
256 ctx->E[i] = key->md.h4;
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 sha1_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 sha1_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 sha1_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 sha1_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.h0;
347 PUTU32(blocks[i].c+4,ctx->B[i]); ctx->B[i] = key->tail.h1;
348 PUTU32(blocks[i].c+8,ctx->C[i]); ctx->C[i] = key->tail.h2;
349 PUTU32(blocks[i].c+12,ctx->D[i]); ctx->D[i] = key->tail.h3;
350 PUTU32(blocks[i].c+16,ctx->E[i]); ctx->E[i] = key->tail.h4;
351 blocks[i].c[20] = 0x80;
352 PUTU32(blocks[i].c+60,(64+20)*8);
353 edges[i].ptr = blocks[i].c;
358 sha1_multi_block(ctx,edges,n4x);
361 unsigned int len = (i==(x4-1)?last:frag), pad, j;
362 unsigned char *out0 = out;
364 memcpy(ciph_d[i].out,ciph_d[i].inp,len-processed);
365 ciph_d[i].inp = ciph_d[i].out;
370 PUTU32(out+0,ctx->A[i]);
371 PUTU32(out+4,ctx->B[i]);
372 PUTU32(out+8,ctx->C[i]);
373 PUTU32(out+12,ctx->D[i]);
374 PUTU32(out+16,ctx->E[i]);
380 for (j=0;j<=pad;j++) *(out++) = pad;
383 ciph_d[i].blocks = (len-processed)/16;
384 len += 16; /* account for explicit iv */
387 out0[0] = ((u8*)key->md.data)[8];
388 out0[1] = ((u8*)key->md.data)[9];
389 out0[2] = ((u8*)key->md.data)[10];
390 out0[3] = (u8)(len>>8);
397 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
399 OPENSSL_cleanse(blocks,sizeof(blocks));
400 OPENSSL_cleanse(ctx,sizeof(*ctx));
406 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
407 const unsigned char *in, size_t len)
409 EVP_AES_HMAC_SHA1 *key = data(ctx);
411 size_t plen = key->payload_length,
412 iv = 0, /* explicit IV in TLS 1.1 and later */
414 #if defined(STITCHED_CALL)
418 sha_off = SHA_CBLOCK-key->md.num;
421 key->payload_length = NO_PAYLOAD_LENGTH;
423 if (len%AES_BLOCK_SIZE) return 0;
426 if (plen==NO_PAYLOAD_LENGTH)
428 else if (len!=((plen+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE))
430 else if (key->aux.tls_ver >= TLS1_1_VERSION)
433 #if defined(STITCHED_CALL)
434 if (plen>(sha_off+iv) && (blocks=(plen-(sha_off+iv))/SHA_CBLOCK)) {
435 SHA1_Update(&key->md,in+iv,sha_off);
437 aesni_cbc_sha1_enc(in,out,blocks,&key->ks,
438 ctx->iv,&key->md,in+iv+sha_off);
439 blocks *= SHA_CBLOCK;
442 key->md.Nh += blocks>>29;
443 key->md.Nl += blocks<<=3;
444 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
450 SHA1_Update(&key->md,in+sha_off,plen-sha_off);
452 if (plen!=len) { /* "TLS" mode of operation */
454 memcpy(out+aes_off,in+aes_off,plen-aes_off);
456 /* calculate HMAC and append it to payload */
457 SHA1_Final(out+plen,&key->md);
459 SHA1_Update(&key->md,out+plen,SHA_DIGEST_LENGTH);
460 SHA1_Final(out+plen,&key->md);
462 /* pad the payload|hmac */
463 plen += SHA_DIGEST_LENGTH;
464 for (l=len-plen-1;plen<len;plen++) out[plen]=l;
465 /* encrypt HMAC|padding at once */
466 aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off,
469 aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off,
473 union { unsigned int u[SHA_DIGEST_LENGTH/sizeof(unsigned int)];
474 unsigned char c[32+SHA_DIGEST_LENGTH]; } mac, *pmac;
476 /* arrange cache line alignment */
477 pmac = (void *)(((size_t)mac.c+31)&((size_t)0-32));
479 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
480 size_t inp_len, mask, j, i;
481 unsigned int res, maxpad, pad, bitlen;
483 union { unsigned int u[SHA_LBLOCK];
484 unsigned char c[SHA_CBLOCK]; }
485 *data = (void *)key->md.data;
486 #if defined(STITCHED_DECRYPT_CALL)
487 unsigned char tail_iv[AES_BLOCK_SIZE];
491 if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3])
493 if (len<(AES_BLOCK_SIZE+SHA_DIGEST_LENGTH+1))
496 /* omit explicit iv */
497 memcpy(ctx->iv,in,AES_BLOCK_SIZE);
498 in += AES_BLOCK_SIZE;
499 out += AES_BLOCK_SIZE;
500 len -= AES_BLOCK_SIZE;
502 else if (len<(SHA_DIGEST_LENGTH+1))
505 #if defined(STITCHED_DECRYPT_CALL)
506 if (len>=1024 && ctx->key_len==32) {
507 /* decrypt last block */
508 memcpy(tail_iv,in+len-2*AES_BLOCK_SIZE,AES_BLOCK_SIZE);
509 aesni_cbc_encrypt(in+len-AES_BLOCK_SIZE,
510 out+len-AES_BLOCK_SIZE,AES_BLOCK_SIZE,
515 /* decrypt HMAC|padding at once */
516 aesni_cbc_encrypt(in,out,len,
519 /* figure out payload length */
521 maxpad = len-(SHA_DIGEST_LENGTH+1);
522 maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
525 inp_len = len - (SHA_DIGEST_LENGTH+pad+1);
526 mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
530 key->aux.tls_aad[plen-2] = inp_len>>8;
531 key->aux.tls_aad[plen-1] = inp_len;
535 SHA1_Update(&key->md,key->aux.tls_aad,plen);
537 #if defined(STITCHED_DECRYPT_CALL)
539 blocks = (len-(256+32+SHA_CBLOCK))/SHA_CBLOCK;
540 aes_off = len-AES_BLOCK_SIZE-blocks*SHA_CBLOCK;
541 sha_off = SHA_CBLOCK-plen;
543 aesni_cbc_encrypt(in,out,aes_off,
546 SHA1_Update(&key->md,out,sha_off);
547 aesni256_cbc_sha1_dec(in+aes_off,
548 out+aes_off,blocks,&key->ks,ctx->iv,
549 &key->md,out+sha_off);
551 sha_off += blocks*=SHA_CBLOCK;
556 key->md.Nl += (blocks<<3); /* at most 18 bits */
557 memcpy(ctx->iv,tail_iv,AES_BLOCK_SIZE);
562 len -= SHA_DIGEST_LENGTH; /* amend mac */
563 if (len>=(256+SHA_CBLOCK)) {
564 j = (len-(256+SHA_CBLOCK))&(0-SHA_CBLOCK);
565 j += SHA_CBLOCK-key->md.num;
566 SHA1_Update(&key->md,out,j);
572 /* but pretend as if we hashed padded payload */
573 bitlen = key->md.Nl+(inp_len<<3); /* at most 18 bits */
575 bitlen = BSWAP4(bitlen);
578 mac.c[1] = (unsigned char)(bitlen>>16);
579 mac.c[2] = (unsigned char)(bitlen>>8);
580 mac.c[3] = (unsigned char)bitlen;
590 for (res=key->md.num, j=0;j<len;j++) {
592 mask = (j-inp_len)>>(sizeof(j)*8-8);
594 c |= 0x80&~mask&~((inp_len-j)>>(sizeof(j)*8-8));
595 data->c[res++]=(unsigned char)c;
597 if (res!=SHA_CBLOCK) continue;
599 /* j is not incremented yet */
600 mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
601 data->u[SHA_LBLOCK-1] |= bitlen&mask;
602 sha1_block_data_order(&key->md,data,1);
603 mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
604 pmac->u[0] |= key->md.h0 & mask;
605 pmac->u[1] |= key->md.h1 & mask;
606 pmac->u[2] |= key->md.h2 & mask;
607 pmac->u[3] |= key->md.h3 & mask;
608 pmac->u[4] |= key->md.h4 & mask;
612 for(i=res;i<SHA_CBLOCK;i++,j++) data->c[i]=0;
614 if (res>SHA_CBLOCK-8) {
615 mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
616 data->u[SHA_LBLOCK-1] |= bitlen&mask;
617 sha1_block_data_order(&key->md,data,1);
618 mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
619 pmac->u[0] |= key->md.h0 & mask;
620 pmac->u[1] |= key->md.h1 & mask;
621 pmac->u[2] |= key->md.h2 & mask;
622 pmac->u[3] |= key->md.h3 & mask;
623 pmac->u[4] |= key->md.h4 & mask;
625 memset(data,0,SHA_CBLOCK);
628 data->u[SHA_LBLOCK-1] = bitlen;
629 sha1_block_data_order(&key->md,data,1);
630 mask = 0-((j-inp_len-73)>>(sizeof(j)*8-1));
631 pmac->u[0] |= key->md.h0 & mask;
632 pmac->u[1] |= key->md.h1 & mask;
633 pmac->u[2] |= key->md.h2 & mask;
634 pmac->u[3] |= key->md.h3 & mask;
635 pmac->u[4] |= key->md.h4 & mask;
638 pmac->u[0] = BSWAP4(pmac->u[0]);
639 pmac->u[1] = BSWAP4(pmac->u[1]);
640 pmac->u[2] = BSWAP4(pmac->u[2]);
641 pmac->u[3] = BSWAP4(pmac->u[3]);
642 pmac->u[4] = BSWAP4(pmac->u[4]);
646 pmac->c[4*i+0]=(unsigned char)(res>>24);
647 pmac->c[4*i+1]=(unsigned char)(res>>16);
648 pmac->c[4*i+2]=(unsigned char)(res>>8);
649 pmac->c[4*i+3]=(unsigned char)res;
652 len += SHA_DIGEST_LENGTH;
654 SHA1_Update(&key->md,out,inp_len);
656 SHA1_Final(pmac->c,&key->md);
659 unsigned int inp_blocks, pad_blocks;
661 /* but pretend as if we hashed padded payload */
662 inp_blocks = 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
663 res += (unsigned int)(len-inp_len);
664 pad_blocks = res / SHA_CBLOCK;
666 pad_blocks += 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
667 for (;inp_blocks<pad_blocks;inp_blocks++)
668 sha1_block_data_order(&key->md,data,1);
672 SHA1_Update(&key->md,pmac->c,SHA_DIGEST_LENGTH);
673 SHA1_Final(pmac->c,&key->md);
680 unsigned char *p = out+len-1-maxpad-SHA_DIGEST_LENGTH;
682 unsigned int c, cmask;
684 maxpad += SHA_DIGEST_LENGTH;
685 for (res=0,i=0,j=0;j<maxpad;j++) {
687 cmask = ((int)(j-off-SHA_DIGEST_LENGTH))>>(sizeof(int)*8-1);
688 res |= (c^pad)&~cmask; /* ... and padding */
689 cmask &= ((int)(off-1-j))>>(sizeof(int)*8-1);
690 res |= (c^pmac->c[i])&cmask;
693 maxpad -= SHA_DIGEST_LENGTH;
695 res = 0-((0-res)>>(sizeof(res)*8-1));
699 for (res=0,i=0;i<SHA_DIGEST_LENGTH;i++)
700 res |= out[i]^pmac->c[i];
701 res = 0-((0-res)>>(sizeof(res)*8-1));
705 pad = (pad&~res) | (maxpad&res);
707 for (res=0,i=0;i<pad;i++)
710 res = (0-res)>>(sizeof(res)*8-1);
715 #if defined(STITCHED_DECRYPT_CALL)
716 if (len>=1024 && ctx->key_len==32) {
717 if (sha_off%=SHA_CBLOCK)
718 blocks = (len-3*SHA_CBLOCK)/SHA_CBLOCK;
720 blocks = (len-2*SHA_CBLOCK)/SHA_CBLOCK;
721 aes_off = len-blocks*SHA_CBLOCK;
723 aesni_cbc_encrypt(in,out,aes_off,
725 SHA1_Update(&key->md,out,sha_off);
726 aesni256_cbc_sha1_dec(in+aes_off,
727 out+aes_off,blocks,&key->ks,ctx->iv,
728 &key->md,out+sha_off);
730 sha_off += blocks*=SHA_CBLOCK;
734 key->md.Nh += blocks>>29;
735 key->md.Nl += blocks<<=3;
736 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
739 /* decrypt HMAC|padding at once */
740 aesni_cbc_encrypt(in,out,len,
743 SHA1_Update(&key->md,out,len);
750 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
752 EVP_AES_HMAC_SHA1 *key = data(ctx);
756 case EVP_CTRL_AEAD_SET_MAC_KEY:
759 unsigned char hmac_key[64];
761 memset (hmac_key,0,sizeof(hmac_key));
763 if (arg > (int)sizeof(hmac_key)) {
764 SHA1_Init(&key->head);
765 SHA1_Update(&key->head,ptr,arg);
766 SHA1_Final(hmac_key,&key->head);
768 memcpy(hmac_key,ptr,arg);
771 for (i=0;i<sizeof(hmac_key);i++)
772 hmac_key[i] ^= 0x36; /* ipad */
773 SHA1_Init(&key->head);
774 SHA1_Update(&key->head,hmac_key,sizeof(hmac_key));
776 for (i=0;i<sizeof(hmac_key);i++)
777 hmac_key[i] ^= 0x36^0x5c; /* opad */
778 SHA1_Init(&key->tail);
779 SHA1_Update(&key->tail,hmac_key,sizeof(hmac_key));
781 OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
785 case EVP_CTRL_AEAD_TLS1_AAD:
787 unsigned char *p=ptr;
788 unsigned int len=p[arg-2]<<8|p[arg-1];
792 key->payload_length = len;
793 if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) {
794 len -= AES_BLOCK_SIZE;
799 SHA1_Update(&key->md,p,arg);
801 return (int)(((len+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)
806 if (arg>13) arg = 13;
807 memcpy(key->aux.tls_aad,ptr,arg);
808 key->payload_length = arg;
810 return SHA_DIGEST_LENGTH;
813 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
814 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
815 return (int)(5+16+((arg+20+16)&-16));
816 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
818 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
819 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
820 unsigned int n4x=1, x4;
821 unsigned int frag, last, packlen, inp_len;
823 if (arg<(int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) return -1;
825 inp_len = param->inp[11]<<8|param->inp[12];
829 if ((param->inp[9]<<8|param->inp[10]) < TLS1_1_VERSION)
834 if (inp_len<4096) return 0; /* too short */
836 if (inp_len>=8192 && OPENSSL_ia32cap_P[2]&(1<<5))
839 else if ((n4x=param->interleave/4) && n4x<=2)
840 inp_len = param->len;
845 SHA1_Update(&key->md,param->inp,13);
847 x4 = 4*n4x; n4x += 1;
850 last = inp_len+frag-(frag<<n4x);
851 if (last>frag && ((last+13+9)%64<(x4-1))) {
856 packlen = 5+16+((frag+20+16)&-16);
857 packlen = (packlen<<n4x)-packlen;
858 packlen += 5+16+((last+20+16)&-16);
860 param->interleave = x4;
865 return -1; /* not yet */
867 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
869 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
870 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
872 return (int)tls1_1_multi_block_encrypt(key,param->out,param->inp,
873 param->len,param->interleave/4);
875 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
882 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher =
884 #ifdef NID_aes_128_cbc_hmac_sha1
885 NID_aes_128_cbc_hmac_sha1,
890 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
891 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
892 aesni_cbc_hmac_sha1_init_key,
893 aesni_cbc_hmac_sha1_cipher,
895 sizeof(EVP_AES_HMAC_SHA1),
896 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
897 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
898 aesni_cbc_hmac_sha1_ctrl,
902 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher =
904 #ifdef NID_aes_256_cbc_hmac_sha1
905 NID_aes_256_cbc_hmac_sha1,
910 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
911 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
912 aesni_cbc_hmac_sha1_init_key,
913 aesni_cbc_hmac_sha1_cipher,
915 sizeof(EVP_AES_HMAC_SHA1),
916 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
917 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
918 aesni_cbc_hmac_sha1_ctrl,
922 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
924 return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
925 &aesni_128_cbc_hmac_sha1_cipher:NULL);
928 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
930 return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
931 &aesni_256_cbc_hmac_sha1_cipher:NULL);
934 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
938 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)