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;
215 /* ask for IVs in bulk */
216 if (RAND_bytes((IVs=blocks[0].c),16*x4)<=0)
219 ctx = (SHA1_MB_CTX *)(storage+32-((size_t)storage%32)); /* align */
221 frag = (unsigned int)inp_len>>(1+n4x);
222 last = (unsigned int)inp_len+frag-(frag<<(1+n4x));
223 if (last>frag && ((last+13+9)%64)<(x4-1)) {
228 packlen = 5+16+((frag+20+16)&-16);
230 /* populate descriptors with pointers and IVs */
233 /* 5+16 is place for header and explicit IV */
234 ciph_d[0].out = out+5+16;
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 unsigned int carry, j;
255 ctx->A[i] = key->md.h0;
256 ctx->B[i] = key->md.h1;
257 ctx->C[i] = key->md.h2;
258 ctx->D[i] = key->md.h3;
259 ctx->E[i] = key->md.h4;
263 blocks[i].q[0] = BSWAP8(seqnum+i);
265 for (carry=i,j=8;j--;) {
266 blocks[i].c[j] = ((u8*)key->md.data)[j]+carry;
267 carry = (blocks[i].c[j]-carry)>>(sizeof(carry)*8-1);
270 blocks[i].c[8] = ((u8*)key->md.data)[8];
271 blocks[i].c[9] = ((u8*)key->md.data)[9];
272 blocks[i].c[10] = ((u8*)key->md.data)[10];
274 blocks[i].c[11] = (u8)(len>>8);
275 blocks[i].c[12] = (u8)(len);
277 memcpy(blocks[i].c+13,hash_d[i].ptr,64-13);
278 hash_d[i].ptr += 64-13;
279 hash_d[i].blocks = (len-(64-13))/64;
281 edges[i].ptr = blocks[i].c;
285 /* hash 13-byte headers and first 64-13 bytes of inputs */
286 sha1_multi_block(ctx,edges,n4x);
287 /* hash bulk inputs */
288 #define MAXCHUNKSIZE 2048
290 #error "MAXCHUNKSIZE is not divisible by 64"
292 /* goal is to minimize pressure on L1 cache by moving
293 * in shorter steps, so that hashed data is still in
294 * the cache by the time we encrypt it */
295 minblocks = ((frag<=last ? frag : last)-(64-13))/64;
296 if (minblocks>MAXCHUNKSIZE/64) {
298 edges[i].ptr = hash_d[i].ptr;
299 edges[i].blocks = MAXCHUNKSIZE/64;
300 ciph_d[i].blocks = MAXCHUNKSIZE/16;
303 sha1_multi_block(ctx,edges,n4x);
304 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
307 edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
308 hash_d[i].blocks -= MAXCHUNKSIZE/64;
309 edges[i].blocks = MAXCHUNKSIZE/64;
310 ciph_d[i].inp += MAXCHUNKSIZE;
311 ciph_d[i].out += MAXCHUNKSIZE;
312 ciph_d[i].blocks = MAXCHUNKSIZE/16;
313 memcpy(ciph_d[i].iv,ciph_d[i].out-16,16);
315 processed += MAXCHUNKSIZE;
316 minblocks -= MAXCHUNKSIZE/64;
317 } while (minblocks>MAXCHUNKSIZE/64);
321 sha1_multi_block(ctx,hash_d,n4x);
323 memset(blocks,0,sizeof(blocks));
325 unsigned int len = (i==(x4-1)?last:frag),
326 off = hash_d[i].blocks*64;
327 const unsigned char *ptr = hash_d[i].ptr+off;
329 off = (len-processed)-(64-13)-off; /* remainder actually */
330 memcpy(blocks[i].c,ptr,off);
331 blocks[i].c[off]=0x80;
332 len += 64+13; /* 64 is HMAC header */
333 len *= 8; /* convert to bits */
336 blocks[i].d[15] = BSWAP4(len);
338 PUTU32(blocks[i].c+60,len);
343 blocks[i].d[31] = BSWAP4(len);
345 PUTU32(blocks[i].c+124,len);
349 edges[i].ptr = blocks[i].c;
352 /* hash input tails and finalize */
353 sha1_multi_block(ctx,edges,n4x);
355 memset(blocks,0,sizeof(blocks));
358 blocks[i].d[0] = BSWAP4(ctx->A[i]); ctx->A[i] = key->tail.h0;
359 blocks[i].d[1] = BSWAP4(ctx->B[i]); ctx->B[i] = key->tail.h1;
360 blocks[i].d[2] = BSWAP4(ctx->C[i]); ctx->C[i] = key->tail.h2;
361 blocks[i].d[3] = BSWAP4(ctx->D[i]); ctx->D[i] = key->tail.h3;
362 blocks[i].d[4] = BSWAP4(ctx->E[i]); ctx->E[i] = key->tail.h4;
363 blocks[i].c[20] = 0x80;
364 blocks[i].d[15] = BSWAP4((64+20)*8);
366 PUTU32(blocks[i].c+0,ctx->A[i]); ctx->A[i] = key->tail.h0;
367 PUTU32(blocks[i].c+4,ctx->B[i]); ctx->B[i] = key->tail.h1;
368 PUTU32(blocks[i].c+8,ctx->C[i]); ctx->C[i] = key->tail.h2;
369 PUTU32(blocks[i].c+12,ctx->D[i]); ctx->D[i] = key->tail.h3;
370 PUTU32(blocks[i].c+16,ctx->E[i]); ctx->E[i] = key->tail.h4;
371 blocks[i].c[20] = 0x80;
372 PUTU32(blocks[i].c+60,(64+20)*8);
374 edges[i].ptr = blocks[i].c;
379 sha1_multi_block(ctx,edges,n4x);
382 unsigned int len = (i==(x4-1)?last:frag), pad, j;
383 unsigned char *out0 = out;
385 memcpy(ciph_d[i].out,ciph_d[i].inp,len-processed);
386 ciph_d[i].inp = ciph_d[i].out;
391 PUTU32(out+0,ctx->A[i]);
392 PUTU32(out+4,ctx->B[i]);
393 PUTU32(out+8,ctx->C[i]);
394 PUTU32(out+12,ctx->D[i]);
395 PUTU32(out+16,ctx->E[i]);
401 for (j=0;j<=pad;j++) *(out++) = pad;
404 ciph_d[i].blocks = (len-processed)/16;
405 len += 16; /* account for explicit iv */
408 out0[0] = ((u8*)key->md.data)[8];
409 out0[1] = ((u8*)key->md.data)[9];
410 out0[2] = ((u8*)key->md.data)[10];
411 out0[3] = (u8)(len>>8);
418 aesni_multi_cbc_encrypt(ciph_d,&key->ks,n4x);
420 OPENSSL_cleanse(blocks,sizeof(blocks));
421 OPENSSL_cleanse(ctx,sizeof(*ctx));
427 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
428 const unsigned char *in, size_t len)
430 EVP_AES_HMAC_SHA1 *key = data(ctx);
432 size_t plen = key->payload_length,
433 iv = 0, /* explicit IV in TLS 1.1 and later */
435 #if defined(STITCHED_CALL)
439 sha_off = SHA_CBLOCK-key->md.num;
442 key->payload_length = NO_PAYLOAD_LENGTH;
444 if (len%AES_BLOCK_SIZE) return 0;
447 if (plen==NO_PAYLOAD_LENGTH)
449 else if (len!=((plen+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE))
451 else if (key->aux.tls_ver >= TLS1_1_VERSION)
454 #if defined(STITCHED_CALL)
455 if (plen>(sha_off+iv) && (blocks=(plen-(sha_off+iv))/SHA_CBLOCK)) {
456 SHA1_Update(&key->md,in+iv,sha_off);
458 aesni_cbc_sha1_enc(in,out,blocks,&key->ks,
459 ctx->iv,&key->md,in+iv+sha_off);
460 blocks *= SHA_CBLOCK;
463 key->md.Nh += blocks>>29;
464 key->md.Nl += blocks<<=3;
465 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
471 SHA1_Update(&key->md,in+sha_off,plen-sha_off);
473 if (plen!=len) { /* "TLS" mode of operation */
475 memcpy(out+aes_off,in+aes_off,plen-aes_off);
477 /* calculate HMAC and append it to payload */
478 SHA1_Final(out+plen,&key->md);
480 SHA1_Update(&key->md,out+plen,SHA_DIGEST_LENGTH);
481 SHA1_Final(out+plen,&key->md);
483 /* pad the payload|hmac */
484 plen += SHA_DIGEST_LENGTH;
485 for (l=len-plen-1;plen<len;plen++) out[plen]=l;
486 /* encrypt HMAC|padding at once */
487 aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off,
490 aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off,
494 union { unsigned int u[SHA_DIGEST_LENGTH/sizeof(unsigned int)];
495 unsigned char c[32+SHA_DIGEST_LENGTH]; } mac, *pmac;
497 /* arrange cache line alignment */
498 pmac = (void *)(((size_t)mac.c+31)&((size_t)0-32));
500 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
501 size_t inp_len, mask, j, i;
502 unsigned int res, maxpad, pad, bitlen;
504 union { unsigned int u[SHA_LBLOCK];
505 unsigned char c[SHA_CBLOCK]; }
506 *data = (void *)key->md.data;
507 #if defined(STITCHED_DECRYPT_CALL)
508 unsigned char tail_iv[AES_BLOCK_SIZE];
512 if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3])
514 if (len<(AES_BLOCK_SIZE+SHA_DIGEST_LENGTH+1))
517 /* omit explicit iv */
518 memcpy(ctx->iv,in,AES_BLOCK_SIZE);
519 in += AES_BLOCK_SIZE;
520 out += AES_BLOCK_SIZE;
521 len -= AES_BLOCK_SIZE;
523 else if (len<(SHA_DIGEST_LENGTH+1))
526 #if defined(STITCHED_DECRYPT_CALL)
527 if (len>=1024 && ctx->key_len==32) {
528 /* decrypt last block */
529 memcpy(tail_iv,in+len-2*AES_BLOCK_SIZE,AES_BLOCK_SIZE);
530 aesni_cbc_encrypt(in+len-AES_BLOCK_SIZE,
531 out+len-AES_BLOCK_SIZE,AES_BLOCK_SIZE,
536 /* decrypt HMAC|padding at once */
537 aesni_cbc_encrypt(in,out,len,
540 /* figure out payload length */
542 maxpad = len-(SHA_DIGEST_LENGTH+1);
543 maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
546 inp_len = len - (SHA_DIGEST_LENGTH+pad+1);
547 mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
551 key->aux.tls_aad[plen-2] = inp_len>>8;
552 key->aux.tls_aad[plen-1] = inp_len;
556 SHA1_Update(&key->md,key->aux.tls_aad,plen);
558 #if defined(STITCHED_DECRYPT_CALL)
560 blocks = (len-(256+32+SHA_CBLOCK))/SHA_CBLOCK;
561 aes_off = len-AES_BLOCK_SIZE-blocks*SHA_CBLOCK;
562 sha_off = SHA_CBLOCK-plen;
564 aesni_cbc_encrypt(in,out,aes_off,
567 SHA1_Update(&key->md,out,sha_off);
568 aesni256_cbc_sha1_dec(in+aes_off,
569 out+aes_off,blocks,&key->ks,ctx->iv,
570 &key->md,out+sha_off);
572 sha_off += blocks*=SHA_CBLOCK;
577 key->md.Nl += (blocks<<3); /* at most 18 bits */
578 memcpy(ctx->iv,tail_iv,AES_BLOCK_SIZE);
583 len -= SHA_DIGEST_LENGTH; /* amend mac */
584 if (len>=(256+SHA_CBLOCK)) {
585 j = (len-(256+SHA_CBLOCK))&(0-SHA_CBLOCK);
586 j += SHA_CBLOCK-key->md.num;
587 SHA1_Update(&key->md,out,j);
593 /* but pretend as if we hashed padded payload */
594 bitlen = key->md.Nl+(inp_len<<3); /* at most 18 bits */
596 bitlen = BSWAP4(bitlen);
599 mac.c[1] = (unsigned char)(bitlen>>16);
600 mac.c[2] = (unsigned char)(bitlen>>8);
601 mac.c[3] = (unsigned char)bitlen;
611 for (res=key->md.num, j=0;j<len;j++) {
613 mask = (j-inp_len)>>(sizeof(j)*8-8);
615 c |= 0x80&~mask&~((inp_len-j)>>(sizeof(j)*8-8));
616 data->c[res++]=(unsigned char)c;
618 if (res!=SHA_CBLOCK) continue;
620 /* j is not incremented yet */
621 mask = 0-((inp_len+7-j)>>(sizeof(j)*8-1));
622 data->u[SHA_LBLOCK-1] |= bitlen&mask;
623 sha1_block_data_order(&key->md,data,1);
624 mask &= 0-((j-inp_len-72)>>(sizeof(j)*8-1));
625 pmac->u[0] |= key->md.h0 & mask;
626 pmac->u[1] |= key->md.h1 & mask;
627 pmac->u[2] |= key->md.h2 & mask;
628 pmac->u[3] |= key->md.h3 & mask;
629 pmac->u[4] |= key->md.h4 & mask;
633 for(i=res;i<SHA_CBLOCK;i++,j++) data->c[i]=0;
635 if (res>SHA_CBLOCK-8) {
636 mask = 0-((inp_len+8-j)>>(sizeof(j)*8-1));
637 data->u[SHA_LBLOCK-1] |= bitlen&mask;
638 sha1_block_data_order(&key->md,data,1);
639 mask &= 0-((j-inp_len-73)>>(sizeof(j)*8-1));
640 pmac->u[0] |= key->md.h0 & mask;
641 pmac->u[1] |= key->md.h1 & mask;
642 pmac->u[2] |= key->md.h2 & mask;
643 pmac->u[3] |= key->md.h3 & mask;
644 pmac->u[4] |= key->md.h4 & mask;
646 memset(data,0,SHA_CBLOCK);
649 data->u[SHA_LBLOCK-1] = bitlen;
650 sha1_block_data_order(&key->md,data,1);
651 mask = 0-((j-inp_len-73)>>(sizeof(j)*8-1));
652 pmac->u[0] |= key->md.h0 & mask;
653 pmac->u[1] |= key->md.h1 & mask;
654 pmac->u[2] |= key->md.h2 & mask;
655 pmac->u[3] |= key->md.h3 & mask;
656 pmac->u[4] |= key->md.h4 & mask;
659 pmac->u[0] = BSWAP4(pmac->u[0]);
660 pmac->u[1] = BSWAP4(pmac->u[1]);
661 pmac->u[2] = BSWAP4(pmac->u[2]);
662 pmac->u[3] = BSWAP4(pmac->u[3]);
663 pmac->u[4] = BSWAP4(pmac->u[4]);
667 pmac->c[4*i+0]=(unsigned char)(res>>24);
668 pmac->c[4*i+1]=(unsigned char)(res>>16);
669 pmac->c[4*i+2]=(unsigned char)(res>>8);
670 pmac->c[4*i+3]=(unsigned char)res;
673 len += SHA_DIGEST_LENGTH;
675 SHA1_Update(&key->md,out,inp_len);
677 SHA1_Final(pmac->c,&key->md);
680 unsigned int inp_blocks, pad_blocks;
682 /* but pretend as if we hashed padded payload */
683 inp_blocks = 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
684 res += (unsigned int)(len-inp_len);
685 pad_blocks = res / SHA_CBLOCK;
687 pad_blocks += 1+((SHA_CBLOCK-9-res)>>(sizeof(res)*8-1));
688 for (;inp_blocks<pad_blocks;inp_blocks++)
689 sha1_block_data_order(&key->md,data,1);
693 SHA1_Update(&key->md,pmac->c,SHA_DIGEST_LENGTH);
694 SHA1_Final(pmac->c,&key->md);
701 unsigned char *p = out+len-1-maxpad-SHA_DIGEST_LENGTH;
703 unsigned int c, cmask;
705 maxpad += SHA_DIGEST_LENGTH;
706 for (res=0,i=0,j=0;j<maxpad;j++) {
708 cmask = ((int)(j-off-SHA_DIGEST_LENGTH))>>(sizeof(int)*8-1);
709 res |= (c^pad)&~cmask; /* ... and padding */
710 cmask &= ((int)(off-1-j))>>(sizeof(int)*8-1);
711 res |= (c^pmac->c[i])&cmask;
714 maxpad -= SHA_DIGEST_LENGTH;
716 res = 0-((0-res)>>(sizeof(res)*8-1));
720 for (res=0,i=0;i<SHA_DIGEST_LENGTH;i++)
721 res |= out[i]^pmac->c[i];
722 res = 0-((0-res)>>(sizeof(res)*8-1));
726 pad = (pad&~res) | (maxpad&res);
728 for (res=0,i=0;i<pad;i++)
731 res = (0-res)>>(sizeof(res)*8-1);
736 #if defined(STITCHED_DECRYPT_CALL)
737 if (len>=1024 && ctx->key_len==32) {
738 if (sha_off%=SHA_CBLOCK)
739 blocks = (len-3*SHA_CBLOCK)/SHA_CBLOCK;
741 blocks = (len-2*SHA_CBLOCK)/SHA_CBLOCK;
742 aes_off = len-blocks*SHA_CBLOCK;
744 aesni_cbc_encrypt(in,out,aes_off,
746 SHA1_Update(&key->md,out,sha_off);
747 aesni256_cbc_sha1_dec(in+aes_off,
748 out+aes_off,blocks,&key->ks,ctx->iv,
749 &key->md,out+sha_off);
751 sha_off += blocks*=SHA_CBLOCK;
755 key->md.Nh += blocks>>29;
756 key->md.Nl += blocks<<=3;
757 if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
760 /* decrypt HMAC|padding at once */
761 aesni_cbc_encrypt(in,out,len,
764 SHA1_Update(&key->md,out,len);
771 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
773 EVP_AES_HMAC_SHA1 *key = data(ctx);
777 case EVP_CTRL_AEAD_SET_MAC_KEY:
780 unsigned char hmac_key[64];
782 memset (hmac_key,0,sizeof(hmac_key));
784 if (arg > (int)sizeof(hmac_key)) {
785 SHA1_Init(&key->head);
786 SHA1_Update(&key->head,ptr,arg);
787 SHA1_Final(hmac_key,&key->head);
789 memcpy(hmac_key,ptr,arg);
792 for (i=0;i<sizeof(hmac_key);i++)
793 hmac_key[i] ^= 0x36; /* ipad */
794 SHA1_Init(&key->head);
795 SHA1_Update(&key->head,hmac_key,sizeof(hmac_key));
797 for (i=0;i<sizeof(hmac_key);i++)
798 hmac_key[i] ^= 0x36^0x5c; /* opad */
799 SHA1_Init(&key->tail);
800 SHA1_Update(&key->tail,hmac_key,sizeof(hmac_key));
802 OPENSSL_cleanse(hmac_key,sizeof(hmac_key));
806 case EVP_CTRL_AEAD_TLS1_AAD:
808 unsigned char *p=ptr;
809 unsigned int len=p[arg-2]<<8|p[arg-1];
813 key->payload_length = len;
814 if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) {
815 len -= AES_BLOCK_SIZE;
820 SHA1_Update(&key->md,p,arg);
822 return (int)(((len+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)
827 if (arg>13) arg = 13;
828 memcpy(key->aux.tls_aad,ptr,arg);
829 key->payload_length = arg;
831 return SHA_DIGEST_LENGTH;
834 #if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
835 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
836 return (int)(5+16+((arg+20+16)&-16));
837 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
839 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
840 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
841 unsigned int n4x=1, x4;
842 unsigned int frag, last, packlen, inp_len;
844 if (arg<(int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) return -1;
846 inp_len = param->inp[11]<<8|param->inp[12];
850 if ((param->inp[9]<<8|param->inp[10]) < TLS1_1_VERSION)
855 if (inp_len<4096) return 0; /* too short */
857 if (inp_len>=8192 && OPENSSL_ia32cap_P[2]&(1<<5))
860 else if ((n4x=param->interleave/4) && n4x<=2)
861 inp_len = param->len;
866 SHA1_Update(&key->md,param->inp,13);
868 x4 = 4*n4x; n4x += 1;
871 last = inp_len+frag-(frag<<n4x);
872 if (last>frag && ((last+13+9)%64<(x4-1))) {
877 packlen = 5+16+((frag+20+16)&-16);
878 packlen = (packlen<<n4x)-packlen;
879 packlen += 5+16+((last+20+16)&-16);
881 param->interleave = x4;
886 return -1; /* not yet */
888 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
890 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
891 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
893 return (int)tls1_1_multi_block_encrypt(key,param->out,param->inp,
894 param->len,param->interleave/4);
896 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
903 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher =
905 #ifdef NID_aes_128_cbc_hmac_sha1
906 NID_aes_128_cbc_hmac_sha1,
911 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
912 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
913 aesni_cbc_hmac_sha1_init_key,
914 aesni_cbc_hmac_sha1_cipher,
916 sizeof(EVP_AES_HMAC_SHA1),
917 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
918 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
919 aesni_cbc_hmac_sha1_ctrl,
923 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher =
925 #ifdef NID_aes_256_cbc_hmac_sha1
926 NID_aes_256_cbc_hmac_sha1,
931 EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|
932 EVP_CIPH_FLAG_AEAD_CIPHER|EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
933 aesni_cbc_hmac_sha1_init_key,
934 aesni_cbc_hmac_sha1_cipher,
936 sizeof(EVP_AES_HMAC_SHA1),
937 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv,
938 EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv,
939 aesni_cbc_hmac_sha1_ctrl,
943 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
945 return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
946 &aesni_128_cbc_hmac_sha1_cipher:NULL);
949 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
951 return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE?
952 &aesni_256_cbc_hmac_sha1_cipher:NULL);
955 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
959 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)