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"
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
82 SHA_CTX head, tail, md;
83 size_t payload_length; /* AAD length in decrypt case */
86 unsigned char tls_aad[16]; /* 13 used */
90 # define NO_PAYLOAD_LENGTH ((size_t)-1)
92 # if defined(AES_ASM) && ( \
93 defined(__x86_64) || defined(__x86_64__) || \
94 defined(_M_AMD64) || defined(_M_X64) || \
97 extern unsigned int OPENSSL_ia32cap_P[];
98 # define AESNI_CAPABLE (1<<(57-32))
100 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
102 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
105 void aesni_cbc_encrypt(const unsigned char *in,
108 const AES_KEY *key, unsigned char *ivec, int enc);
110 void aesni_cbc_sha1_enc(const void *inp, void *out, size_t blocks,
111 const AES_KEY *key, unsigned char iv[16],
112 SHA_CTX *ctx, const void *in0);
114 void aesni256_cbc_sha1_dec(const void *inp, void *out, size_t blocks,
115 const AES_KEY *key, unsigned char iv[16],
116 SHA_CTX *ctx, const void *in0);
118 # define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_cipher_data(ctx))
120 static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
121 const unsigned char *inkey,
122 const unsigned char *iv, int enc)
124 EVP_AES_HMAC_SHA1 *key = data(ctx);
128 ret = aesni_set_encrypt_key(inkey,
129 EVP_CIPHER_CTX_key_length(ctx) * 8,
132 ret = aesni_set_decrypt_key(inkey,
133 EVP_CIPHER_CTX_key_length(ctx) * 8,
136 SHA1_Init(&key->head); /* handy when benchmarking */
137 key->tail = key->head;
140 key->payload_length = NO_PAYLOAD_LENGTH;
142 return ret < 0 ? 0 : 1;
145 # define STITCHED_CALL
146 # undef STITCHED_DECRYPT_CALL
148 # if !defined(STITCHED_CALL)
152 void sha1_block_data_order(void *c, const void *p, size_t len);
154 static void sha1_update(SHA_CTX *c, const void *data, size_t len)
156 const unsigned char *ptr = data;
159 if ((res = c->num)) {
160 res = SHA_CBLOCK - res;
163 SHA1_Update(c, ptr, res);
168 res = len % SHA_CBLOCK;
172 sha1_block_data_order(c, ptr, len / SHA_CBLOCK);
177 if (c->Nl < (unsigned int)len)
182 SHA1_Update(c, ptr, res);
188 # define SHA1_Update sha1_update
190 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
193 unsigned int A[8], B[8], C[8], D[8], E[8];
196 const unsigned char *ptr;
200 void sha1_multi_block(SHA1_MB_CTX *, const HASH_DESC *, int);
203 const unsigned char *inp;
209 void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
211 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
213 const unsigned char *inp,
214 size_t inp_len, int n4x)
215 { /* n4x is 1 or 2 */
216 HASH_DESC hash_d[8], edges[8];
218 unsigned char storage[sizeof(SHA1_MB_CTX) + 32];
225 unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
233 /* ask for IVs in bulk */
234 if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
237 ctx = (SHA1_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */
239 frag = (unsigned int)inp_len >> (1 + n4x);
240 last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
241 if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
246 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
248 /* populate descriptors with pointers and IVs */
251 /* 5+16 is place for header and explicit IV */
252 ciph_d[0].out = out + 5 + 16;
253 memcpy(ciph_d[0].out - 16, IVs, 16);
254 memcpy(ciph_d[0].iv, IVs, 16);
257 for (i = 1; i < x4; i++) {
258 ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
259 ciph_d[i].out = ciph_d[i - 1].out + packlen;
260 memcpy(ciph_d[i].out - 16, IVs, 16);
261 memcpy(ciph_d[i].iv, IVs, 16);
266 memcpy(blocks[0].c, key->md.data, 8);
267 seqnum = BSWAP8(blocks[0].q[0]);
269 for (i = 0; i < x4; i++) {
270 unsigned int len = (i == (x4 - 1) ? last : frag);
271 # if !defined(BSWAP8)
272 unsigned int carry, j;
275 ctx->A[i] = key->md.h0;
276 ctx->B[i] = key->md.h1;
277 ctx->C[i] = key->md.h2;
278 ctx->D[i] = key->md.h3;
279 ctx->E[i] = key->md.h4;
283 blocks[i].q[0] = BSWAP8(seqnum + i);
285 for (carry = i, j = 8; j--;) {
286 blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry;
287 carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
290 blocks[i].c[8] = ((u8 *)key->md.data)[8];
291 blocks[i].c[9] = ((u8 *)key->md.data)[9];
292 blocks[i].c[10] = ((u8 *)key->md.data)[10];
294 blocks[i].c[11] = (u8)(len >> 8);
295 blocks[i].c[12] = (u8)(len);
297 memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13);
298 hash_d[i].ptr += 64 - 13;
299 hash_d[i].blocks = (len - (64 - 13)) / 64;
301 edges[i].ptr = blocks[i].c;
305 /* hash 13-byte headers and first 64-13 bytes of inputs */
306 sha1_multi_block(ctx, edges, n4x);
307 /* hash bulk inputs */
308 # define MAXCHUNKSIZE 2048
310 # error "MAXCHUNKSIZE is not divisible by 64"
313 * goal is to minimize pressure on L1 cache by moving in shorter steps,
314 * so that hashed data is still in the cache by the time we encrypt it
316 minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64;
317 if (minblocks > MAXCHUNKSIZE / 64) {
318 for (i = 0; i < x4; i++) {
319 edges[i].ptr = hash_d[i].ptr;
320 edges[i].blocks = MAXCHUNKSIZE / 64;
321 ciph_d[i].blocks = MAXCHUNKSIZE / 16;
324 sha1_multi_block(ctx, edges, n4x);
325 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
327 for (i = 0; i < x4; i++) {
328 edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
329 hash_d[i].blocks -= MAXCHUNKSIZE / 64;
330 edges[i].blocks = MAXCHUNKSIZE / 64;
331 ciph_d[i].inp += MAXCHUNKSIZE;
332 ciph_d[i].out += MAXCHUNKSIZE;
333 ciph_d[i].blocks = MAXCHUNKSIZE / 16;
334 memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16);
336 processed += MAXCHUNKSIZE;
337 minblocks -= MAXCHUNKSIZE / 64;
338 } while (minblocks > MAXCHUNKSIZE / 64);
342 sha1_multi_block(ctx, hash_d, n4x);
344 memset(blocks, 0, sizeof(blocks));
345 for (i = 0; i < x4; i++) {
346 unsigned int len = (i == (x4 - 1) ? last : frag),
347 off = hash_d[i].blocks * 64;
348 const unsigned char *ptr = hash_d[i].ptr + off;
350 off = (len - processed) - (64 - 13) - off; /* remainder actually */
351 memcpy(blocks[i].c, ptr, off);
352 blocks[i].c[off] = 0x80;
353 len += 64 + 13; /* 64 is HMAC header */
354 len *= 8; /* convert to bits */
355 if (off < (64 - 8)) {
357 blocks[i].d[15] = BSWAP4(len);
359 PUTU32(blocks[i].c + 60, len);
364 blocks[i].d[31] = BSWAP4(len);
366 PUTU32(blocks[i].c + 124, len);
370 edges[i].ptr = blocks[i].c;
373 /* hash input tails and finalize */
374 sha1_multi_block(ctx, edges, n4x);
376 memset(blocks, 0, sizeof(blocks));
377 for (i = 0; i < x4; i++) {
379 blocks[i].d[0] = BSWAP4(ctx->A[i]);
380 ctx->A[i] = key->tail.h0;
381 blocks[i].d[1] = BSWAP4(ctx->B[i]);
382 ctx->B[i] = key->tail.h1;
383 blocks[i].d[2] = BSWAP4(ctx->C[i]);
384 ctx->C[i] = key->tail.h2;
385 blocks[i].d[3] = BSWAP4(ctx->D[i]);
386 ctx->D[i] = key->tail.h3;
387 blocks[i].d[4] = BSWAP4(ctx->E[i]);
388 ctx->E[i] = key->tail.h4;
389 blocks[i].c[20] = 0x80;
390 blocks[i].d[15] = BSWAP4((64 + 20) * 8);
392 PUTU32(blocks[i].c + 0, ctx->A[i]);
393 ctx->A[i] = key->tail.h0;
394 PUTU32(blocks[i].c + 4, ctx->B[i]);
395 ctx->B[i] = key->tail.h1;
396 PUTU32(blocks[i].c + 8, ctx->C[i]);
397 ctx->C[i] = key->tail.h2;
398 PUTU32(blocks[i].c + 12, ctx->D[i]);
399 ctx->D[i] = key->tail.h3;
400 PUTU32(blocks[i].c + 16, ctx->E[i]);
401 ctx->E[i] = key->tail.h4;
402 blocks[i].c[20] = 0x80;
403 PUTU32(blocks[i].c + 60, (64 + 20) * 8);
405 edges[i].ptr = blocks[i].c;
410 sha1_multi_block(ctx, edges, n4x);
412 for (i = 0; i < x4; i++) {
413 unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
414 unsigned char *out0 = out;
416 memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
417 ciph_d[i].inp = ciph_d[i].out;
422 PUTU32(out + 0, ctx->A[i]);
423 PUTU32(out + 4, ctx->B[i]);
424 PUTU32(out + 8, ctx->C[i]);
425 PUTU32(out + 12, ctx->D[i]);
426 PUTU32(out + 16, ctx->E[i]);
432 for (j = 0; j <= pad; j++)
436 ciph_d[i].blocks = (len - processed) / 16;
437 len += 16; /* account for explicit iv */
440 out0[0] = ((u8 *)key->md.data)[8];
441 out0[1] = ((u8 *)key->md.data)[9];
442 out0[2] = ((u8 *)key->md.data)[10];
443 out0[3] = (u8)(len >> 8);
450 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
452 OPENSSL_cleanse(blocks, sizeof(blocks));
453 OPENSSL_cleanse(ctx, sizeof(*ctx));
459 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
460 const unsigned char *in, size_t len)
462 EVP_AES_HMAC_SHA1 *key = data(ctx);
464 size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
467 # if defined(STITCHED_CALL)
468 size_t aes_off = 0, blocks;
470 sha_off = SHA_CBLOCK - key->md.num;
473 key->payload_length = NO_PAYLOAD_LENGTH;
475 if (len % AES_BLOCK_SIZE)
478 if (EVP_CIPHER_CTX_encrypting(ctx)) {
479 if (plen == NO_PAYLOAD_LENGTH)
482 ((plen + SHA_DIGEST_LENGTH +
483 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
485 else if (key->aux.tls_ver >= TLS1_1_VERSION)
488 # if defined(STITCHED_CALL)
489 if (plen > (sha_off + iv)
490 && (blocks = (plen - (sha_off + iv)) / SHA_CBLOCK)) {
491 SHA1_Update(&key->md, in + iv, sha_off);
493 aesni_cbc_sha1_enc(in, out, blocks, &key->ks,
494 EVP_CIPHER_CTX_iv_noconst(ctx),
495 &key->md, in + iv + sha_off);
496 blocks *= SHA_CBLOCK;
499 key->md.Nh += blocks >> 29;
500 key->md.Nl += blocks <<= 3;
501 if (key->md.Nl < (unsigned int)blocks)
508 SHA1_Update(&key->md, in + sha_off, plen - sha_off);
510 if (plen != len) { /* "TLS" mode of operation */
512 memcpy(out + aes_off, in + aes_off, plen - aes_off);
514 /* calculate HMAC and append it to payload */
515 SHA1_Final(out + plen, &key->md);
517 SHA1_Update(&key->md, out + plen, SHA_DIGEST_LENGTH);
518 SHA1_Final(out + plen, &key->md);
520 /* pad the payload|hmac */
521 plen += SHA_DIGEST_LENGTH;
522 for (l = len - plen - 1; plen < len; plen++)
524 /* encrypt HMAC|padding at once */
525 aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
526 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
528 aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
529 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
533 unsigned int u[SHA_DIGEST_LENGTH / sizeof(unsigned int)];
534 unsigned char c[32 + SHA_DIGEST_LENGTH];
537 /* arrange cache line alignment */
538 pmac = (void *)(((size_t)mac.c + 31) & ((size_t)0 - 32));
540 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
541 size_t inp_len, mask, j, i;
542 unsigned int res, maxpad, pad, bitlen;
545 unsigned int u[SHA_LBLOCK];
546 unsigned char c[SHA_CBLOCK];
547 } *data = (void *)key->md.data;
548 # if defined(STITCHED_DECRYPT_CALL)
549 unsigned char tail_iv[AES_BLOCK_SIZE];
553 if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
555 if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
558 /* omit explicit iv */
559 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), in, AES_BLOCK_SIZE);
561 in += AES_BLOCK_SIZE;
562 out += AES_BLOCK_SIZE;
563 len -= AES_BLOCK_SIZE;
564 } else if (len < (SHA_DIGEST_LENGTH + 1))
567 # if defined(STITCHED_DECRYPT_CALL)
568 if (len >= 1024 && ctx->key_len == 32) {
569 /* decrypt last block */
570 memcpy(tail_iv, in + len - 2 * AES_BLOCK_SIZE,
572 aesni_cbc_encrypt(in + len - AES_BLOCK_SIZE,
573 out + len - AES_BLOCK_SIZE, AES_BLOCK_SIZE,
574 &key->ks, tail_iv, 0);
578 /* decrypt HMAC|padding at once */
579 aesni_cbc_encrypt(in, out, len, &key->ks,
580 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
582 /* figure out payload length */
584 maxpad = len - (SHA_DIGEST_LENGTH + 1);
585 maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
588 inp_len = len - (SHA_DIGEST_LENGTH + pad + 1);
589 mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1)));
593 key->aux.tls_aad[plen - 2] = inp_len >> 8;
594 key->aux.tls_aad[plen - 1] = inp_len;
598 SHA1_Update(&key->md, key->aux.tls_aad, plen);
600 # if defined(STITCHED_DECRYPT_CALL)
602 blocks = (len - (256 + 32 + SHA_CBLOCK)) / SHA_CBLOCK;
603 aes_off = len - AES_BLOCK_SIZE - blocks * SHA_CBLOCK;
604 sha_off = SHA_CBLOCK - plen;
606 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
608 SHA1_Update(&key->md, out, sha_off);
609 aesni256_cbc_sha1_dec(in + aes_off,
610 out + aes_off, blocks, &key->ks,
611 ctx->iv, &key->md, out + sha_off);
613 sha_off += blocks *= SHA_CBLOCK;
618 key->md.Nl += (blocks << 3); /* at most 18 bits */
619 memcpy(ctx->iv, tail_iv, AES_BLOCK_SIZE);
624 len -= SHA_DIGEST_LENGTH; /* amend mac */
625 if (len >= (256 + SHA_CBLOCK)) {
626 j = (len - (256 + SHA_CBLOCK)) & (0 - SHA_CBLOCK);
627 j += SHA_CBLOCK - key->md.num;
628 SHA1_Update(&key->md, out, j);
634 /* but pretend as if we hashed padded payload */
635 bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */
637 bitlen = BSWAP4(bitlen);
640 mac.c[1] = (unsigned char)(bitlen >> 16);
641 mac.c[2] = (unsigned char)(bitlen >> 8);
642 mac.c[3] = (unsigned char)bitlen;
652 for (res = key->md.num, j = 0; j < len; j++) {
654 mask = (j - inp_len) >> (sizeof(j) * 8 - 8);
656 c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8));
657 data->c[res++] = (unsigned char)c;
659 if (res != SHA_CBLOCK)
662 /* j is not incremented yet */
663 mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
664 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
665 sha1_block_data_order(&key->md, data, 1);
666 mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
667 pmac->u[0] |= key->md.h0 & mask;
668 pmac->u[1] |= key->md.h1 & mask;
669 pmac->u[2] |= key->md.h2 & mask;
670 pmac->u[3] |= key->md.h3 & mask;
671 pmac->u[4] |= key->md.h4 & mask;
675 for (i = res; i < SHA_CBLOCK; i++, j++)
678 if (res > SHA_CBLOCK - 8) {
679 mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
680 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
681 sha1_block_data_order(&key->md, data, 1);
682 mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
683 pmac->u[0] |= key->md.h0 & mask;
684 pmac->u[1] |= key->md.h1 & mask;
685 pmac->u[2] |= key->md.h2 & mask;
686 pmac->u[3] |= key->md.h3 & mask;
687 pmac->u[4] |= key->md.h4 & mask;
689 memset(data, 0, SHA_CBLOCK);
692 data->u[SHA_LBLOCK - 1] = bitlen;
693 sha1_block_data_order(&key->md, data, 1);
694 mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
695 pmac->u[0] |= key->md.h0 & mask;
696 pmac->u[1] |= key->md.h1 & mask;
697 pmac->u[2] |= key->md.h2 & mask;
698 pmac->u[3] |= key->md.h3 & mask;
699 pmac->u[4] |= key->md.h4 & mask;
702 pmac->u[0] = BSWAP4(pmac->u[0]);
703 pmac->u[1] = BSWAP4(pmac->u[1]);
704 pmac->u[2] = BSWAP4(pmac->u[2]);
705 pmac->u[3] = BSWAP4(pmac->u[3]);
706 pmac->u[4] = BSWAP4(pmac->u[4]);
708 for (i = 0; i < 5; i++) {
710 pmac->c[4 * i + 0] = (unsigned char)(res >> 24);
711 pmac->c[4 * i + 1] = (unsigned char)(res >> 16);
712 pmac->c[4 * i + 2] = (unsigned char)(res >> 8);
713 pmac->c[4 * i + 3] = (unsigned char)res;
716 len += SHA_DIGEST_LENGTH;
718 SHA1_Update(&key->md, out, inp_len);
720 SHA1_Final(pmac->c, &key->md);
723 unsigned int inp_blocks, pad_blocks;
725 /* but pretend as if we hashed padded payload */
727 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
728 res += (unsigned int)(len - inp_len);
729 pad_blocks = res / SHA_CBLOCK;
732 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
733 for (; inp_blocks < pad_blocks; inp_blocks++)
734 sha1_block_data_order(&key->md, data, 1);
738 SHA1_Update(&key->md, pmac->c, SHA_DIGEST_LENGTH);
739 SHA1_Final(pmac->c, &key->md);
746 unsigned char *p = out + len - 1 - maxpad - SHA_DIGEST_LENGTH;
747 size_t off = out - p;
748 unsigned int c, cmask;
750 maxpad += SHA_DIGEST_LENGTH;
751 for (res = 0, i = 0, j = 0; j < maxpad; j++) {
754 ((int)(j - off - SHA_DIGEST_LENGTH)) >> (sizeof(int) *
756 res |= (c ^ pad) & ~cmask; /* ... and padding */
757 cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1);
758 res |= (c ^ pmac->c[i]) & cmask;
761 maxpad -= SHA_DIGEST_LENGTH;
763 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
767 for (res = 0, i = 0; i < SHA_DIGEST_LENGTH; i++)
768 res |= out[i] ^ pmac->c[i];
769 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
773 pad = (pad & ~res) | (maxpad & res);
774 out = out + len - 1 - pad;
775 for (res = 0, i = 0; i < pad; i++)
778 res = (0 - res) >> (sizeof(res) * 8 - 1);
783 # if defined(STITCHED_DECRYPT_CALL)
784 if (len >= 1024 && ctx->key_len == 32) {
785 if (sha_off %= SHA_CBLOCK)
786 blocks = (len - 3 * SHA_CBLOCK) / SHA_CBLOCK;
788 blocks = (len - 2 * SHA_CBLOCK) / SHA_CBLOCK;
789 aes_off = len - blocks * SHA_CBLOCK;
791 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
792 SHA1_Update(&key->md, out, sha_off);
793 aesni256_cbc_sha1_dec(in + aes_off,
794 out + aes_off, blocks, &key->ks,
795 ctx->iv, &key->md, out + sha_off);
797 sha_off += blocks *= SHA_CBLOCK;
801 key->md.Nh += blocks >> 29;
802 key->md.Nl += blocks <<= 3;
803 if (key->md.Nl < (unsigned int)blocks)
807 /* decrypt HMAC|padding at once */
808 aesni_cbc_encrypt(in, out, len, &key->ks,
809 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
811 SHA1_Update(&key->md, out, len);
818 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
821 EVP_AES_HMAC_SHA1 *key = data(ctx);
824 case EVP_CTRL_AEAD_SET_MAC_KEY:
827 unsigned char hmac_key[64];
829 memset(hmac_key, 0, sizeof(hmac_key));
831 if (arg > (int)sizeof(hmac_key)) {
832 SHA1_Init(&key->head);
833 SHA1_Update(&key->head, ptr, arg);
834 SHA1_Final(hmac_key, &key->head);
836 memcpy(hmac_key, ptr, arg);
839 for (i = 0; i < sizeof(hmac_key); i++)
840 hmac_key[i] ^= 0x36; /* ipad */
841 SHA1_Init(&key->head);
842 SHA1_Update(&key->head, hmac_key, sizeof(hmac_key));
844 for (i = 0; i < sizeof(hmac_key); i++)
845 hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
846 SHA1_Init(&key->tail);
847 SHA1_Update(&key->tail, hmac_key, sizeof(hmac_key));
849 OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
853 case EVP_CTRL_AEAD_TLS1_AAD:
855 unsigned char *p = ptr;
858 if (arg != EVP_AEAD_TLS1_AAD_LEN)
861 len = p[arg - 2] << 8 | p[arg - 1];
863 if (EVP_CIPHER_CTX_encrypting(ctx)) {
864 key->payload_length = len;
865 if ((key->aux.tls_ver =
866 p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
867 len -= AES_BLOCK_SIZE;
868 p[arg - 2] = len >> 8;
872 SHA1_Update(&key->md, p, arg);
874 return (int)(((len + SHA_DIGEST_LENGTH +
875 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
878 memcpy(key->aux.tls_aad, ptr, arg);
879 key->payload_length = arg;
881 return SHA_DIGEST_LENGTH;
884 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
885 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
886 return (int)(5 + 16 + ((arg + 20 + 16) & -16));
887 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
889 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
890 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
891 unsigned int n4x = 1, x4;
892 unsigned int frag, last, packlen, inp_len;
894 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
897 inp_len = param->inp[11] << 8 | param->inp[12];
899 if (EVP_CIPHER_CTX_encrypting(ctx)) {
900 if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION)
905 return 0; /* too short */
907 if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5))
909 } else if ((n4x = param->interleave / 4) && n4x <= 2)
910 inp_len = param->len;
915 SHA1_Update(&key->md, param->inp, 13);
920 frag = inp_len >> n4x;
921 last = inp_len + frag - (frag << n4x);
922 if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) {
927 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
928 packlen = (packlen << n4x) - packlen;
929 packlen += 5 + 16 + ((last + 20 + 16) & -16);
931 param->interleave = x4;
935 return -1; /* not yet */
937 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
939 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
940 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
942 return (int)tls1_1_multi_block_encrypt(key, param->out,
943 param->inp, param->len,
944 param->interleave / 4);
946 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
953 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher = {
954 # ifdef NID_aes_128_cbc_hmac_sha1
955 NID_aes_128_cbc_hmac_sha1,
959 AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE,
960 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
961 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
962 aesni_cbc_hmac_sha1_init_key,
963 aesni_cbc_hmac_sha1_cipher,
965 sizeof(EVP_AES_HMAC_SHA1),
966 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
967 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
968 aesni_cbc_hmac_sha1_ctrl,
972 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher = {
973 # ifdef NID_aes_256_cbc_hmac_sha1
974 NID_aes_256_cbc_hmac_sha1,
978 AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE,
979 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
980 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
981 aesni_cbc_hmac_sha1_init_key,
982 aesni_cbc_hmac_sha1_cipher,
984 sizeof(EVP_AES_HMAC_SHA1),
985 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
986 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
987 aesni_cbc_hmac_sha1_ctrl,
991 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
993 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
994 &aesni_128_cbc_hmac_sha1_cipher : NULL);
997 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
999 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
1000 &aesni_256_cbc_hmac_sha1_cipher : NULL);
1003 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
1008 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)