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)
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 # include "internal/evp_int.h"
65 # ifndef EVP_CIPH_FLAG_AEAD_CIPHER
66 # define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
67 # define EVP_CTRL_AEAD_TLS1_AAD 0x16
68 # define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
71 # if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1)
72 # define EVP_CIPH_FLAG_DEFAULT_ASN1 0
75 # if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
76 # define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
79 # define TLS1_1_VERSION 0x0302
83 SHA_CTX head, tail, md;
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[];
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,
109 const AES_KEY *key, unsigned char *ivec, int enc);
111 void aesni_cbc_sha1_enc(const void *inp, void *out, size_t blocks,
112 const AES_KEY *key, unsigned char iv[16],
113 SHA_CTX *ctx, const void *in0);
115 void aesni256_cbc_sha1_dec(const void *inp, void *out, size_t blocks,
116 const AES_KEY *key, unsigned char iv[16],
117 SHA_CTX *ctx, const void *in0);
119 # define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
121 static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
122 const unsigned char *inkey,
123 const unsigned char *iv, int enc)
125 EVP_AES_HMAC_SHA1 *key = data(ctx);
129 ret = aesni_set_encrypt_key(inkey,
130 EVP_CIPHER_CTX_key_length(ctx) * 8,
133 ret = aesni_set_decrypt_key(inkey,
134 EVP_CIPHER_CTX_key_length(ctx) * 8,
137 SHA1_Init(&key->head); /* handy when benchmarking */
138 key->tail = key->head;
141 key->payload_length = NO_PAYLOAD_LENGTH;
143 return ret < 0 ? 0 : 1;
146 # define STITCHED_CALL
147 # undef STITCHED_DECRYPT_CALL
149 # if !defined(STITCHED_CALL)
153 void sha1_block_data_order(void *c, const void *p, size_t len);
155 static void sha1_update(SHA_CTX *c, const void *data, size_t len)
157 const unsigned char *ptr = data;
160 if ((res = c->num)) {
161 res = SHA_CBLOCK - res;
164 SHA1_Update(c, ptr, res);
169 res = len % SHA_CBLOCK;
173 sha1_block_data_order(c, ptr, len / SHA_CBLOCK);
178 if (c->Nl < (unsigned int)len)
183 SHA1_Update(c, ptr, res);
189 # define SHA1_Update sha1_update
191 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
194 unsigned int A[8], B[8], C[8], D[8], E[8];
197 const unsigned char *ptr;
201 void sha1_multi_block(SHA1_MB_CTX *, const HASH_DESC *, int);
204 const unsigned char *inp;
210 void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
212 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
214 const unsigned char *inp,
215 size_t inp_len, int n4x)
216 { /* n4x is 1 or 2 */
217 HASH_DESC hash_d[8], edges[8];
219 unsigned char storage[sizeof(SHA1_MB_CTX) + 32];
226 unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
234 /* ask for IVs in bulk */
235 if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
238 ctx = (SHA1_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */
240 frag = (unsigned int)inp_len >> (1 + n4x);
241 last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
242 if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
247 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
249 /* populate descriptors with pointers and IVs */
252 /* 5+16 is place for header and explicit IV */
253 ciph_d[0].out = out + 5 + 16;
254 memcpy(ciph_d[0].out - 16, IVs, 16);
255 memcpy(ciph_d[0].iv, IVs, 16);
258 for (i = 1; i < x4; i++) {
259 ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
260 ciph_d[i].out = ciph_d[i - 1].out + packlen;
261 memcpy(ciph_d[i].out - 16, IVs, 16);
262 memcpy(ciph_d[i].iv, IVs, 16);
267 memcpy(blocks[0].c, key->md.data, 8);
268 seqnum = BSWAP8(blocks[0].q[0]);
270 for (i = 0; i < x4; i++) {
271 unsigned int len = (i == (x4 - 1) ? last : frag);
272 # if !defined(BSWAP8)
273 unsigned int carry, j;
276 ctx->A[i] = key->md.h0;
277 ctx->B[i] = key->md.h1;
278 ctx->C[i] = key->md.h2;
279 ctx->D[i] = key->md.h3;
280 ctx->E[i] = key->md.h4;
284 blocks[i].q[0] = BSWAP8(seqnum + i);
286 for (carry = i, j = 8; j--;) {
287 blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry;
288 carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
291 blocks[i].c[8] = ((u8 *)key->md.data)[8];
292 blocks[i].c[9] = ((u8 *)key->md.data)[9];
293 blocks[i].c[10] = ((u8 *)key->md.data)[10];
295 blocks[i].c[11] = (u8)(len >> 8);
296 blocks[i].c[12] = (u8)(len);
298 memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13);
299 hash_d[i].ptr += 64 - 13;
300 hash_d[i].blocks = (len - (64 - 13)) / 64;
302 edges[i].ptr = blocks[i].c;
306 /* hash 13-byte headers and first 64-13 bytes of inputs */
307 sha1_multi_block(ctx, edges, n4x);
308 /* hash bulk inputs */
309 # define MAXCHUNKSIZE 2048
311 # error "MAXCHUNKSIZE is not divisible by 64"
314 * goal is to minimize pressure on L1 cache by moving in shorter steps,
315 * so that hashed data is still in the cache by the time we encrypt it
317 minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64;
318 if (minblocks > MAXCHUNKSIZE / 64) {
319 for (i = 0; i < x4; i++) {
320 edges[i].ptr = hash_d[i].ptr;
321 edges[i].blocks = MAXCHUNKSIZE / 64;
322 ciph_d[i].blocks = MAXCHUNKSIZE / 16;
325 sha1_multi_block(ctx, edges, n4x);
326 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
328 for (i = 0; i < x4; i++) {
329 edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
330 hash_d[i].blocks -= MAXCHUNKSIZE / 64;
331 edges[i].blocks = MAXCHUNKSIZE / 64;
332 ciph_d[i].inp += MAXCHUNKSIZE;
333 ciph_d[i].out += MAXCHUNKSIZE;
334 ciph_d[i].blocks = MAXCHUNKSIZE / 16;
335 memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16);
337 processed += MAXCHUNKSIZE;
338 minblocks -= MAXCHUNKSIZE / 64;
339 } while (minblocks > MAXCHUNKSIZE / 64);
343 sha1_multi_block(ctx, hash_d, n4x);
345 memset(blocks, 0, sizeof(blocks));
346 for (i = 0; i < x4; i++) {
347 unsigned int len = (i == (x4 - 1) ? last : frag),
348 off = hash_d[i].blocks * 64;
349 const unsigned char *ptr = hash_d[i].ptr + off;
351 off = (len - processed) - (64 - 13) - off; /* remainder actually */
352 memcpy(blocks[i].c, ptr, off);
353 blocks[i].c[off] = 0x80;
354 len += 64 + 13; /* 64 is HMAC header */
355 len *= 8; /* convert to bits */
356 if (off < (64 - 8)) {
358 blocks[i].d[15] = BSWAP4(len);
360 PUTU32(blocks[i].c + 60, len);
365 blocks[i].d[31] = BSWAP4(len);
367 PUTU32(blocks[i].c + 124, len);
371 edges[i].ptr = blocks[i].c;
374 /* hash input tails and finalize */
375 sha1_multi_block(ctx, edges, n4x);
377 memset(blocks, 0, sizeof(blocks));
378 for (i = 0; i < x4; i++) {
380 blocks[i].d[0] = BSWAP4(ctx->A[i]);
381 ctx->A[i] = key->tail.h0;
382 blocks[i].d[1] = BSWAP4(ctx->B[i]);
383 ctx->B[i] = key->tail.h1;
384 blocks[i].d[2] = BSWAP4(ctx->C[i]);
385 ctx->C[i] = key->tail.h2;
386 blocks[i].d[3] = BSWAP4(ctx->D[i]);
387 ctx->D[i] = key->tail.h3;
388 blocks[i].d[4] = BSWAP4(ctx->E[i]);
389 ctx->E[i] = key->tail.h4;
390 blocks[i].c[20] = 0x80;
391 blocks[i].d[15] = BSWAP4((64 + 20) * 8);
393 PUTU32(blocks[i].c + 0, ctx->A[i]);
394 ctx->A[i] = key->tail.h0;
395 PUTU32(blocks[i].c + 4, ctx->B[i]);
396 ctx->B[i] = key->tail.h1;
397 PUTU32(blocks[i].c + 8, ctx->C[i]);
398 ctx->C[i] = key->tail.h2;
399 PUTU32(blocks[i].c + 12, ctx->D[i]);
400 ctx->D[i] = key->tail.h3;
401 PUTU32(blocks[i].c + 16, ctx->E[i]);
402 ctx->E[i] = key->tail.h4;
403 blocks[i].c[20] = 0x80;
404 PUTU32(blocks[i].c + 60, (64 + 20) * 8);
406 edges[i].ptr = blocks[i].c;
411 sha1_multi_block(ctx, edges, n4x);
413 for (i = 0; i < x4; i++) {
414 unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
415 unsigned char *out0 = out;
417 memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
418 ciph_d[i].inp = ciph_d[i].out;
423 PUTU32(out + 0, ctx->A[i]);
424 PUTU32(out + 4, ctx->B[i]);
425 PUTU32(out + 8, ctx->C[i]);
426 PUTU32(out + 12, ctx->D[i]);
427 PUTU32(out + 16, ctx->E[i]);
433 for (j = 0; j <= pad; j++)
437 ciph_d[i].blocks = (len - processed) / 16;
438 len += 16; /* account for explicit iv */
441 out0[0] = ((u8 *)key->md.data)[8];
442 out0[1] = ((u8 *)key->md.data)[9];
443 out0[2] = ((u8 *)key->md.data)[10];
444 out0[3] = (u8)(len >> 8);
451 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
453 OPENSSL_cleanse(blocks, sizeof(blocks));
454 OPENSSL_cleanse(ctx, sizeof(*ctx));
460 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
461 const unsigned char *in, size_t len)
463 EVP_AES_HMAC_SHA1 *key = data(ctx);
465 size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
468 # if defined(STITCHED_CALL)
469 size_t aes_off = 0, blocks;
471 sha_off = SHA_CBLOCK - key->md.num;
474 key->payload_length = NO_PAYLOAD_LENGTH;
476 if (len % AES_BLOCK_SIZE)
479 if (EVP_CIPHER_CTX_encrypting(ctx)) {
480 if (plen == NO_PAYLOAD_LENGTH)
483 ((plen + SHA_DIGEST_LENGTH +
484 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
486 else if (key->aux.tls_ver >= TLS1_1_VERSION)
489 # if defined(STITCHED_CALL)
490 if (plen > (sha_off + iv)
491 && (blocks = (plen - (sha_off + iv)) / SHA_CBLOCK)) {
492 SHA1_Update(&key->md, in + iv, sha_off);
494 aesni_cbc_sha1_enc(in, out, blocks, &key->ks,
495 EVP_CIPHER_CTX_iv_noconst(ctx),
496 &key->md, in + iv + sha_off);
497 blocks *= SHA_CBLOCK;
500 key->md.Nh += blocks >> 29;
501 key->md.Nl += blocks <<= 3;
502 if (key->md.Nl < (unsigned int)blocks)
509 SHA1_Update(&key->md, in + sha_off, plen - sha_off);
511 if (plen != len) { /* "TLS" mode of operation */
513 memcpy(out + aes_off, in + aes_off, plen - aes_off);
515 /* calculate HMAC and append it to payload */
516 SHA1_Final(out + plen, &key->md);
518 SHA1_Update(&key->md, out + plen, SHA_DIGEST_LENGTH);
519 SHA1_Final(out + plen, &key->md);
521 /* pad the payload|hmac */
522 plen += SHA_DIGEST_LENGTH;
523 for (l = len - plen - 1; plen < len; plen++)
525 /* encrypt HMAC|padding at once */
526 aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
527 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
529 aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
530 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
534 unsigned int u[SHA_DIGEST_LENGTH / sizeof(unsigned int)];
535 unsigned char c[32 + SHA_DIGEST_LENGTH];
538 /* arrange cache line alignment */
539 pmac = (void *)(((size_t)mac.c + 31) & ((size_t)0 - 32));
541 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
542 size_t inp_len, mask, j, i;
543 unsigned int res, maxpad, pad, bitlen;
546 unsigned int u[SHA_LBLOCK];
547 unsigned char c[SHA_CBLOCK];
548 } *data = (void *)key->md.data;
549 # if defined(STITCHED_DECRYPT_CALL)
550 unsigned char tail_iv[AES_BLOCK_SIZE];
554 if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
556 if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
559 /* omit explicit iv */
560 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), in, AES_BLOCK_SIZE);
562 in += AES_BLOCK_SIZE;
563 out += AES_BLOCK_SIZE;
564 len -= AES_BLOCK_SIZE;
565 } else if (len < (SHA_DIGEST_LENGTH + 1))
568 # if defined(STITCHED_DECRYPT_CALL)
569 if (len >= 1024 && ctx->key_len == 32) {
570 /* decrypt last block */
571 memcpy(tail_iv, in + len - 2 * AES_BLOCK_SIZE,
573 aesni_cbc_encrypt(in + len - AES_BLOCK_SIZE,
574 out + len - AES_BLOCK_SIZE, AES_BLOCK_SIZE,
575 &key->ks, tail_iv, 0);
579 /* decrypt HMAC|padding at once */
580 aesni_cbc_encrypt(in, out, len, &key->ks,
581 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
583 /* figure out payload length */
585 maxpad = len - (SHA_DIGEST_LENGTH + 1);
586 maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
589 inp_len = len - (SHA_DIGEST_LENGTH + pad + 1);
590 mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1)));
594 key->aux.tls_aad[plen - 2] = inp_len >> 8;
595 key->aux.tls_aad[plen - 1] = inp_len;
599 SHA1_Update(&key->md, key->aux.tls_aad, plen);
601 # if defined(STITCHED_DECRYPT_CALL)
603 blocks = (len - (256 + 32 + SHA_CBLOCK)) / SHA_CBLOCK;
604 aes_off = len - AES_BLOCK_SIZE - blocks * SHA_CBLOCK;
605 sha_off = SHA_CBLOCK - plen;
607 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
609 SHA1_Update(&key->md, out, sha_off);
610 aesni256_cbc_sha1_dec(in + aes_off,
611 out + aes_off, blocks, &key->ks,
612 ctx->iv, &key->md, out + sha_off);
614 sha_off += blocks *= SHA_CBLOCK;
619 key->md.Nl += (blocks << 3); /* at most 18 bits */
620 memcpy(ctx->iv, tail_iv, AES_BLOCK_SIZE);
625 len -= SHA_DIGEST_LENGTH; /* amend mac */
626 if (len >= (256 + SHA_CBLOCK)) {
627 j = (len - (256 + SHA_CBLOCK)) & (0 - SHA_CBLOCK);
628 j += SHA_CBLOCK - key->md.num;
629 SHA1_Update(&key->md, out, j);
635 /* but pretend as if we hashed padded payload */
636 bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */
638 bitlen = BSWAP4(bitlen);
641 mac.c[1] = (unsigned char)(bitlen >> 16);
642 mac.c[2] = (unsigned char)(bitlen >> 8);
643 mac.c[3] = (unsigned char)bitlen;
653 for (res = key->md.num, j = 0; j < len; j++) {
655 mask = (j - inp_len) >> (sizeof(j) * 8 - 8);
657 c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8));
658 data->c[res++] = (unsigned char)c;
660 if (res != SHA_CBLOCK)
663 /* j is not incremented yet */
664 mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
665 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
666 sha1_block_data_order(&key->md, data, 1);
667 mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
668 pmac->u[0] |= key->md.h0 & mask;
669 pmac->u[1] |= key->md.h1 & mask;
670 pmac->u[2] |= key->md.h2 & mask;
671 pmac->u[3] |= key->md.h3 & mask;
672 pmac->u[4] |= key->md.h4 & mask;
676 for (i = res; i < SHA_CBLOCK; i++, j++)
679 if (res > SHA_CBLOCK - 8) {
680 mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
681 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
682 sha1_block_data_order(&key->md, data, 1);
683 mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
684 pmac->u[0] |= key->md.h0 & mask;
685 pmac->u[1] |= key->md.h1 & mask;
686 pmac->u[2] |= key->md.h2 & mask;
687 pmac->u[3] |= key->md.h3 & mask;
688 pmac->u[4] |= key->md.h4 & mask;
690 memset(data, 0, SHA_CBLOCK);
693 data->u[SHA_LBLOCK - 1] = bitlen;
694 sha1_block_data_order(&key->md, data, 1);
695 mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
696 pmac->u[0] |= key->md.h0 & mask;
697 pmac->u[1] |= key->md.h1 & mask;
698 pmac->u[2] |= key->md.h2 & mask;
699 pmac->u[3] |= key->md.h3 & mask;
700 pmac->u[4] |= key->md.h4 & mask;
703 pmac->u[0] = BSWAP4(pmac->u[0]);
704 pmac->u[1] = BSWAP4(pmac->u[1]);
705 pmac->u[2] = BSWAP4(pmac->u[2]);
706 pmac->u[3] = BSWAP4(pmac->u[3]);
707 pmac->u[4] = BSWAP4(pmac->u[4]);
709 for (i = 0; i < 5; i++) {
711 pmac->c[4 * i + 0] = (unsigned char)(res >> 24);
712 pmac->c[4 * i + 1] = (unsigned char)(res >> 16);
713 pmac->c[4 * i + 2] = (unsigned char)(res >> 8);
714 pmac->c[4 * i + 3] = (unsigned char)res;
717 len += SHA_DIGEST_LENGTH;
719 SHA1_Update(&key->md, out, inp_len);
721 SHA1_Final(pmac->c, &key->md);
724 unsigned int inp_blocks, pad_blocks;
726 /* but pretend as if we hashed padded payload */
728 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
729 res += (unsigned int)(len - inp_len);
730 pad_blocks = res / SHA_CBLOCK;
733 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
734 for (; inp_blocks < pad_blocks; inp_blocks++)
735 sha1_block_data_order(&key->md, data, 1);
739 SHA1_Update(&key->md, pmac->c, SHA_DIGEST_LENGTH);
740 SHA1_Final(pmac->c, &key->md);
747 unsigned char *p = out + len - 1 - maxpad - SHA_DIGEST_LENGTH;
748 size_t off = out - p;
749 unsigned int c, cmask;
751 maxpad += SHA_DIGEST_LENGTH;
752 for (res = 0, i = 0, j = 0; j < maxpad; j++) {
755 ((int)(j - off - SHA_DIGEST_LENGTH)) >> (sizeof(int) *
757 res |= (c ^ pad) & ~cmask; /* ... and padding */
758 cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1);
759 res |= (c ^ pmac->c[i]) & cmask;
762 maxpad -= SHA_DIGEST_LENGTH;
764 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
768 for (res = 0, i = 0; i < SHA_DIGEST_LENGTH; i++)
769 res |= out[i] ^ pmac->c[i];
770 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
774 pad = (pad & ~res) | (maxpad & res);
775 out = out + len - 1 - pad;
776 for (res = 0, i = 0; i < pad; i++)
779 res = (0 - res) >> (sizeof(res) * 8 - 1);
784 # if defined(STITCHED_DECRYPT_CALL)
785 if (len >= 1024 && ctx->key_len == 32) {
786 if (sha_off %= SHA_CBLOCK)
787 blocks = (len - 3 * SHA_CBLOCK) / SHA_CBLOCK;
789 blocks = (len - 2 * SHA_CBLOCK) / SHA_CBLOCK;
790 aes_off = len - blocks * SHA_CBLOCK;
792 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
793 SHA1_Update(&key->md, out, sha_off);
794 aesni256_cbc_sha1_dec(in + aes_off,
795 out + aes_off, blocks, &key->ks,
796 ctx->iv, &key->md, out + sha_off);
798 sha_off += blocks *= SHA_CBLOCK;
802 key->md.Nh += blocks >> 29;
803 key->md.Nl += blocks <<= 3;
804 if (key->md.Nl < (unsigned int)blocks)
808 /* decrypt HMAC|padding at once */
809 aesni_cbc_encrypt(in, out, len, &key->ks,
810 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
812 SHA1_Update(&key->md, out, len);
819 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
822 EVP_AES_HMAC_SHA1 *key = data(ctx);
825 case EVP_CTRL_AEAD_SET_MAC_KEY:
828 unsigned char hmac_key[64];
830 memset(hmac_key, 0, sizeof(hmac_key));
832 if (arg > (int)sizeof(hmac_key)) {
833 SHA1_Init(&key->head);
834 SHA1_Update(&key->head, ptr, arg);
835 SHA1_Final(hmac_key, &key->head);
837 memcpy(hmac_key, ptr, arg);
840 for (i = 0; i < sizeof(hmac_key); i++)
841 hmac_key[i] ^= 0x36; /* ipad */
842 SHA1_Init(&key->head);
843 SHA1_Update(&key->head, hmac_key, sizeof(hmac_key));
845 for (i = 0; i < sizeof(hmac_key); i++)
846 hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
847 SHA1_Init(&key->tail);
848 SHA1_Update(&key->tail, hmac_key, sizeof(hmac_key));
850 OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
854 case EVP_CTRL_AEAD_TLS1_AAD:
856 unsigned char *p = ptr;
859 if (arg != EVP_AEAD_TLS1_AAD_LEN)
862 len = p[arg - 2] << 8 | p[arg - 1];
864 if (EVP_CIPHER_CTX_encrypting(ctx)) {
865 key->payload_length = len;
866 if ((key->aux.tls_ver =
867 p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
868 len -= AES_BLOCK_SIZE;
869 p[arg - 2] = len >> 8;
873 SHA1_Update(&key->md, p, arg);
875 return (int)(((len + SHA_DIGEST_LENGTH +
876 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
879 memcpy(key->aux.tls_aad, ptr, arg);
880 key->payload_length = arg;
882 return SHA_DIGEST_LENGTH;
885 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
886 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
887 return (int)(5 + 16 + ((arg + 20 + 16) & -16));
888 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
890 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
891 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
892 unsigned int n4x = 1, x4;
893 unsigned int frag, last, packlen, inp_len;
895 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
898 inp_len = param->inp[11] << 8 | param->inp[12];
900 if (EVP_CIPHER_CTX_encrypting(ctx)) {
901 if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION)
906 return 0; /* too short */
908 if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5))
910 } else if ((n4x = param->interleave / 4) && n4x <= 2)
911 inp_len = param->len;
916 SHA1_Update(&key->md, param->inp, 13);
921 frag = inp_len >> n4x;
922 last = inp_len + frag - (frag << n4x);
923 if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) {
928 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
929 packlen = (packlen << n4x) - packlen;
930 packlen += 5 + 16 + ((last + 20 + 16) & -16);
932 param->interleave = x4;
936 return -1; /* not yet */
938 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
940 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
941 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
943 return (int)tls1_1_multi_block_encrypt(key, param->out,
944 param->inp, param->len,
945 param->interleave / 4);
947 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
954 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher = {
955 # ifdef NID_aes_128_cbc_hmac_sha1
956 NID_aes_128_cbc_hmac_sha1,
960 AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE,
961 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
962 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
963 aesni_cbc_hmac_sha1_init_key,
964 aesni_cbc_hmac_sha1_cipher,
966 sizeof(EVP_AES_HMAC_SHA1),
967 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
968 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
969 aesni_cbc_hmac_sha1_ctrl,
973 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher = {
974 # ifdef NID_aes_256_cbc_hmac_sha1
975 NID_aes_256_cbc_hmac_sha1,
979 AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE,
980 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
981 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
982 aesni_cbc_hmac_sha1_init_key,
983 aesni_cbc_hmac_sha1_cipher,
985 sizeof(EVP_AES_HMAC_SHA1),
986 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
987 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
988 aesni_cbc_hmac_sha1_ctrl,
992 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
994 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
995 &aesni_128_cbc_hmac_sha1_cipher : NULL);
998 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
1000 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
1001 &aesni_256_cbc_hmac_sha1_cipher : NULL);
1004 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
1009 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)