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 #include <openssl/evp.h>
56 #include <openssl/objects.h>
57 #include <openssl/aes.h>
58 #include <openssl/sha.h>
59 #include <openssl/rand.h>
60 #include "modes_lcl.h"
61 #include "internal/evp_int.h"
63 #ifndef EVP_CIPH_FLAG_AEAD_CIPHER
64 # define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
65 # define EVP_CTRL_AEAD_TLS1_AAD 0x16
66 # define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
69 #if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1)
70 # define EVP_CIPH_FLAG_DEFAULT_ASN1 0
73 #if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
74 # define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
77 #define TLS1_1_VERSION 0x0302
81 SHA_CTX head, tail, md;
82 size_t payload_length; /* AAD length in decrypt case */
85 unsigned char tls_aad[16]; /* 13 used */
89 #define NO_PAYLOAD_LENGTH ((size_t)-1)
91 #if defined(AES_ASM) && ( \
92 defined(__x86_64) || defined(__x86_64__) || \
93 defined(_M_AMD64) || defined(_M_X64) || \
96 extern unsigned int OPENSSL_ia32cap_P[];
97 # define AESNI_CAPABLE (1<<(57-32))
99 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
101 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
104 void aesni_cbc_encrypt(const unsigned char *in,
107 const AES_KEY *key, unsigned char *ivec, int enc);
109 void aesni_cbc_sha1_enc(const void *inp, void *out, size_t blocks,
110 const AES_KEY *key, unsigned char iv[16],
111 SHA_CTX *ctx, const void *in0);
113 void aesni256_cbc_sha1_dec(const void *inp, void *out, size_t blocks,
114 const AES_KEY *key, unsigned char iv[16],
115 SHA_CTX *ctx, const void *in0);
117 # define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
119 static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
120 const unsigned char *inkey,
121 const unsigned char *iv, int enc)
123 EVP_AES_HMAC_SHA1 *key = data(ctx);
127 ret = aesni_set_encrypt_key(inkey,
128 EVP_CIPHER_CTX_key_length(ctx) * 8,
131 ret = aesni_set_decrypt_key(inkey,
132 EVP_CIPHER_CTX_key_length(ctx) * 8,
135 SHA1_Init(&key->head); /* handy when benchmarking */
136 key->tail = key->head;
139 key->payload_length = NO_PAYLOAD_LENGTH;
141 return ret < 0 ? 0 : 1;
144 # define STITCHED_CALL
145 # undef STITCHED_DECRYPT_CALL
147 # if !defined(STITCHED_CALL)
151 void sha1_block_data_order(void *c, const void *p, size_t len);
153 static void sha1_update(SHA_CTX *c, const void *data, size_t len)
155 const unsigned char *ptr = data;
158 if ((res = c->num)) {
159 res = SHA_CBLOCK - res;
162 SHA1_Update(c, ptr, res);
167 res = len % SHA_CBLOCK;
171 sha1_block_data_order(c, ptr, len / SHA_CBLOCK);
176 if (c->Nl < (unsigned int)len)
181 SHA1_Update(c, ptr, res);
187 # define SHA1_Update sha1_update
189 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
192 unsigned int A[8], B[8], C[8], D[8], E[8];
195 const unsigned char *ptr;
199 void sha1_multi_block(SHA1_MB_CTX *, const HASH_DESC *, int);
202 const unsigned char *inp;
208 void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
210 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
212 const unsigned char *inp,
213 size_t inp_len, int n4x)
214 { /* n4x is 1 or 2 */
215 HASH_DESC hash_d[8], edges[8];
217 unsigned char storage[sizeof(SHA1_MB_CTX) + 32];
224 unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
232 /* ask for IVs in bulk */
233 if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
236 ctx = (SHA1_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */
238 frag = (unsigned int)inp_len >> (1 + n4x);
239 last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
240 if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
245 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
247 /* populate descriptors with pointers and IVs */
250 /* 5+16 is place for header and explicit IV */
251 ciph_d[0].out = out + 5 + 16;
252 memcpy(ciph_d[0].out - 16, IVs, 16);
253 memcpy(ciph_d[0].iv, IVs, 16);
256 for (i = 1; i < x4; i++) {
257 ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
258 ciph_d[i].out = ciph_d[i - 1].out + packlen;
259 memcpy(ciph_d[i].out - 16, IVs, 16);
260 memcpy(ciph_d[i].iv, IVs, 16);
265 memcpy(blocks[0].c, key->md.data, 8);
266 seqnum = BSWAP8(blocks[0].q[0]);
268 for (i = 0; i < x4; i++) {
269 unsigned int len = (i == (x4 - 1) ? last : frag);
270 # if !defined(BSWAP8)
271 unsigned int carry, j;
274 ctx->A[i] = key->md.h0;
275 ctx->B[i] = key->md.h1;
276 ctx->C[i] = key->md.h2;
277 ctx->D[i] = key->md.h3;
278 ctx->E[i] = key->md.h4;
282 blocks[i].q[0] = BSWAP8(seqnum + i);
284 for (carry = i, j = 8; j--;) {
285 blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry;
286 carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
289 blocks[i].c[8] = ((u8 *)key->md.data)[8];
290 blocks[i].c[9] = ((u8 *)key->md.data)[9];
291 blocks[i].c[10] = ((u8 *)key->md.data)[10];
293 blocks[i].c[11] = (u8)(len >> 8);
294 blocks[i].c[12] = (u8)(len);
296 memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13);
297 hash_d[i].ptr += 64 - 13;
298 hash_d[i].blocks = (len - (64 - 13)) / 64;
300 edges[i].ptr = blocks[i].c;
304 /* hash 13-byte headers and first 64-13 bytes of inputs */
305 sha1_multi_block(ctx, edges, n4x);
306 /* hash bulk inputs */
307 # define MAXCHUNKSIZE 2048
309 # error "MAXCHUNKSIZE is not divisible by 64"
312 * goal is to minimize pressure on L1 cache by moving in shorter steps,
313 * so that hashed data is still in the cache by the time we encrypt it
315 minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64;
316 if (minblocks > MAXCHUNKSIZE / 64) {
317 for (i = 0; i < x4; i++) {
318 edges[i].ptr = hash_d[i].ptr;
319 edges[i].blocks = MAXCHUNKSIZE / 64;
320 ciph_d[i].blocks = MAXCHUNKSIZE / 16;
323 sha1_multi_block(ctx, edges, n4x);
324 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
326 for (i = 0; i < x4; i++) {
327 edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
328 hash_d[i].blocks -= MAXCHUNKSIZE / 64;
329 edges[i].blocks = MAXCHUNKSIZE / 64;
330 ciph_d[i].inp += MAXCHUNKSIZE;
331 ciph_d[i].out += MAXCHUNKSIZE;
332 ciph_d[i].blocks = MAXCHUNKSIZE / 16;
333 memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16);
335 processed += MAXCHUNKSIZE;
336 minblocks -= MAXCHUNKSIZE / 64;
337 } while (minblocks > MAXCHUNKSIZE / 64);
341 sha1_multi_block(ctx, hash_d, n4x);
343 memset(blocks, 0, sizeof(blocks));
344 for (i = 0; i < x4; i++) {
345 unsigned int len = (i == (x4 - 1) ? last : frag),
346 off = hash_d[i].blocks * 64;
347 const unsigned char *ptr = hash_d[i].ptr + off;
349 off = (len - processed) - (64 - 13) - off; /* remainder actually */
350 memcpy(blocks[i].c, ptr, off);
351 blocks[i].c[off] = 0x80;
352 len += 64 + 13; /* 64 is HMAC header */
353 len *= 8; /* convert to bits */
354 if (off < (64 - 8)) {
356 blocks[i].d[15] = BSWAP4(len);
358 PUTU32(blocks[i].c + 60, len);
363 blocks[i].d[31] = BSWAP4(len);
365 PUTU32(blocks[i].c + 124, len);
369 edges[i].ptr = blocks[i].c;
372 /* hash input tails and finalize */
373 sha1_multi_block(ctx, edges, n4x);
375 memset(blocks, 0, sizeof(blocks));
376 for (i = 0; i < x4; i++) {
378 blocks[i].d[0] = BSWAP4(ctx->A[i]);
379 ctx->A[i] = key->tail.h0;
380 blocks[i].d[1] = BSWAP4(ctx->B[i]);
381 ctx->B[i] = key->tail.h1;
382 blocks[i].d[2] = BSWAP4(ctx->C[i]);
383 ctx->C[i] = key->tail.h2;
384 blocks[i].d[3] = BSWAP4(ctx->D[i]);
385 ctx->D[i] = key->tail.h3;
386 blocks[i].d[4] = BSWAP4(ctx->E[i]);
387 ctx->E[i] = key->tail.h4;
388 blocks[i].c[20] = 0x80;
389 blocks[i].d[15] = BSWAP4((64 + 20) * 8);
391 PUTU32(blocks[i].c + 0, ctx->A[i]);
392 ctx->A[i] = key->tail.h0;
393 PUTU32(blocks[i].c + 4, ctx->B[i]);
394 ctx->B[i] = key->tail.h1;
395 PUTU32(blocks[i].c + 8, ctx->C[i]);
396 ctx->C[i] = key->tail.h2;
397 PUTU32(blocks[i].c + 12, ctx->D[i]);
398 ctx->D[i] = key->tail.h3;
399 PUTU32(blocks[i].c + 16, ctx->E[i]);
400 ctx->E[i] = key->tail.h4;
401 blocks[i].c[20] = 0x80;
402 PUTU32(blocks[i].c + 60, (64 + 20) * 8);
404 edges[i].ptr = blocks[i].c;
409 sha1_multi_block(ctx, edges, n4x);
411 for (i = 0; i < x4; i++) {
412 unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
413 unsigned char *out0 = out;
415 memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
416 ciph_d[i].inp = ciph_d[i].out;
421 PUTU32(out + 0, ctx->A[i]);
422 PUTU32(out + 4, ctx->B[i]);
423 PUTU32(out + 8, ctx->C[i]);
424 PUTU32(out + 12, ctx->D[i]);
425 PUTU32(out + 16, ctx->E[i]);
431 for (j = 0; j <= pad; j++)
435 ciph_d[i].blocks = (len - processed) / 16;
436 len += 16; /* account for explicit iv */
439 out0[0] = ((u8 *)key->md.data)[8];
440 out0[1] = ((u8 *)key->md.data)[9];
441 out0[2] = ((u8 *)key->md.data)[10];
442 out0[3] = (u8)(len >> 8);
449 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
451 OPENSSL_cleanse(blocks, sizeof(blocks));
452 OPENSSL_cleanse(ctx, sizeof(*ctx));
458 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
459 const unsigned char *in, size_t len)
461 EVP_AES_HMAC_SHA1 *key = data(ctx);
463 size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
466 # if defined(STITCHED_CALL)
467 size_t aes_off = 0, blocks;
469 sha_off = SHA_CBLOCK - key->md.num;
472 key->payload_length = NO_PAYLOAD_LENGTH;
474 if (len % AES_BLOCK_SIZE)
477 if (EVP_CIPHER_CTX_encrypting(ctx)) {
478 if (plen == NO_PAYLOAD_LENGTH)
481 ((plen + SHA_DIGEST_LENGTH +
482 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
484 else if (key->aux.tls_ver >= TLS1_1_VERSION)
487 # if defined(STITCHED_CALL)
488 if (plen > (sha_off + iv)
489 && (blocks = (plen - (sha_off + iv)) / SHA_CBLOCK)) {
490 SHA1_Update(&key->md, in + iv, sha_off);
492 aesni_cbc_sha1_enc(in, out, blocks, &key->ks,
493 EVP_CIPHER_CTX_iv_noconst(ctx),
494 &key->md, in + iv + sha_off);
495 blocks *= SHA_CBLOCK;
498 key->md.Nh += blocks >> 29;
499 key->md.Nl += blocks <<= 3;
500 if (key->md.Nl < (unsigned int)blocks)
507 SHA1_Update(&key->md, in + sha_off, plen - sha_off);
509 if (plen != len) { /* "TLS" mode of operation */
511 memcpy(out + aes_off, in + aes_off, plen - aes_off);
513 /* calculate HMAC and append it to payload */
514 SHA1_Final(out + plen, &key->md);
516 SHA1_Update(&key->md, out + plen, SHA_DIGEST_LENGTH);
517 SHA1_Final(out + plen, &key->md);
519 /* pad the payload|hmac */
520 plen += SHA_DIGEST_LENGTH;
521 for (l = len - plen - 1; plen < len; plen++)
523 /* encrypt HMAC|padding at once */
524 aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
525 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
527 aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
528 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
532 unsigned int u[SHA_DIGEST_LENGTH / sizeof(unsigned int)];
533 unsigned char c[32 + SHA_DIGEST_LENGTH];
536 /* arrange cache line alignment */
537 pmac = (void *)(((size_t)mac.c + 31) & ((size_t)0 - 32));
539 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
540 size_t inp_len, mask, j, i;
541 unsigned int res, maxpad, pad, bitlen;
544 unsigned int u[SHA_LBLOCK];
545 unsigned char c[SHA_CBLOCK];
546 } *data = (void *)key->md.data;
547 # if defined(STITCHED_DECRYPT_CALL)
548 unsigned char tail_iv[AES_BLOCK_SIZE];
552 if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
554 if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
557 /* omit explicit iv */
558 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), in, AES_BLOCK_SIZE);
560 in += AES_BLOCK_SIZE;
561 out += AES_BLOCK_SIZE;
562 len -= AES_BLOCK_SIZE;
563 } else if (len < (SHA_DIGEST_LENGTH + 1))
566 # if defined(STITCHED_DECRYPT_CALL)
567 if (len >= 1024 && ctx->key_len == 32) {
568 /* decrypt last block */
569 memcpy(tail_iv, in + len - 2 * AES_BLOCK_SIZE,
571 aesni_cbc_encrypt(in + len - AES_BLOCK_SIZE,
572 out + len - AES_BLOCK_SIZE, AES_BLOCK_SIZE,
573 &key->ks, tail_iv, 0);
577 /* decrypt HMAC|padding at once */
578 aesni_cbc_encrypt(in, out, len, &key->ks,
579 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
581 /* figure out payload length */
583 maxpad = len - (SHA_DIGEST_LENGTH + 1);
584 maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
587 inp_len = len - (SHA_DIGEST_LENGTH + pad + 1);
588 mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1)));
592 key->aux.tls_aad[plen - 2] = inp_len >> 8;
593 key->aux.tls_aad[plen - 1] = inp_len;
597 SHA1_Update(&key->md, key->aux.tls_aad, plen);
599 # if defined(STITCHED_DECRYPT_CALL)
601 blocks = (len - (256 + 32 + SHA_CBLOCK)) / SHA_CBLOCK;
602 aes_off = len - AES_BLOCK_SIZE - blocks * SHA_CBLOCK;
603 sha_off = SHA_CBLOCK - plen;
605 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
607 SHA1_Update(&key->md, out, sha_off);
608 aesni256_cbc_sha1_dec(in + aes_off,
609 out + aes_off, blocks, &key->ks,
610 ctx->iv, &key->md, out + sha_off);
612 sha_off += blocks *= SHA_CBLOCK;
617 key->md.Nl += (blocks << 3); /* at most 18 bits */
618 memcpy(ctx->iv, tail_iv, AES_BLOCK_SIZE);
623 len -= SHA_DIGEST_LENGTH; /* amend mac */
624 if (len >= (256 + SHA_CBLOCK)) {
625 j = (len - (256 + SHA_CBLOCK)) & (0 - SHA_CBLOCK);
626 j += SHA_CBLOCK - key->md.num;
627 SHA1_Update(&key->md, out, j);
633 /* but pretend as if we hashed padded payload */
634 bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */
636 bitlen = BSWAP4(bitlen);
639 mac.c[1] = (unsigned char)(bitlen >> 16);
640 mac.c[2] = (unsigned char)(bitlen >> 8);
641 mac.c[3] = (unsigned char)bitlen;
651 for (res = key->md.num, j = 0; j < len; j++) {
653 mask = (j - inp_len) >> (sizeof(j) * 8 - 8);
655 c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8));
656 data->c[res++] = (unsigned char)c;
658 if (res != SHA_CBLOCK)
661 /* j is not incremented yet */
662 mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
663 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
664 sha1_block_data_order(&key->md, data, 1);
665 mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
666 pmac->u[0] |= key->md.h0 & mask;
667 pmac->u[1] |= key->md.h1 & mask;
668 pmac->u[2] |= key->md.h2 & mask;
669 pmac->u[3] |= key->md.h3 & mask;
670 pmac->u[4] |= key->md.h4 & mask;
674 for (i = res; i < SHA_CBLOCK; i++, j++)
677 if (res > SHA_CBLOCK - 8) {
678 mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
679 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
680 sha1_block_data_order(&key->md, data, 1);
681 mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
682 pmac->u[0] |= key->md.h0 & mask;
683 pmac->u[1] |= key->md.h1 & mask;
684 pmac->u[2] |= key->md.h2 & mask;
685 pmac->u[3] |= key->md.h3 & mask;
686 pmac->u[4] |= key->md.h4 & mask;
688 memset(data, 0, SHA_CBLOCK);
691 data->u[SHA_LBLOCK - 1] = bitlen;
692 sha1_block_data_order(&key->md, data, 1);
693 mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
694 pmac->u[0] |= key->md.h0 & mask;
695 pmac->u[1] |= key->md.h1 & mask;
696 pmac->u[2] |= key->md.h2 & mask;
697 pmac->u[3] |= key->md.h3 & mask;
698 pmac->u[4] |= key->md.h4 & mask;
701 pmac->u[0] = BSWAP4(pmac->u[0]);
702 pmac->u[1] = BSWAP4(pmac->u[1]);
703 pmac->u[2] = BSWAP4(pmac->u[2]);
704 pmac->u[3] = BSWAP4(pmac->u[3]);
705 pmac->u[4] = BSWAP4(pmac->u[4]);
707 for (i = 0; i < 5; i++) {
709 pmac->c[4 * i + 0] = (unsigned char)(res >> 24);
710 pmac->c[4 * i + 1] = (unsigned char)(res >> 16);
711 pmac->c[4 * i + 2] = (unsigned char)(res >> 8);
712 pmac->c[4 * i + 3] = (unsigned char)res;
715 len += SHA_DIGEST_LENGTH;
717 SHA1_Update(&key->md, out, inp_len);
719 SHA1_Final(pmac->c, &key->md);
722 unsigned int inp_blocks, pad_blocks;
724 /* but pretend as if we hashed padded payload */
726 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
727 res += (unsigned int)(len - inp_len);
728 pad_blocks = res / SHA_CBLOCK;
731 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
732 for (; inp_blocks < pad_blocks; inp_blocks++)
733 sha1_block_data_order(&key->md, data, 1);
737 SHA1_Update(&key->md, pmac->c, SHA_DIGEST_LENGTH);
738 SHA1_Final(pmac->c, &key->md);
745 unsigned char *p = out + len - 1 - maxpad - SHA_DIGEST_LENGTH;
746 size_t off = out - p;
747 unsigned int c, cmask;
749 maxpad += SHA_DIGEST_LENGTH;
750 for (res = 0, i = 0, j = 0; j < maxpad; j++) {
753 ((int)(j - off - SHA_DIGEST_LENGTH)) >> (sizeof(int) *
755 res |= (c ^ pad) & ~cmask; /* ... and padding */
756 cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1);
757 res |= (c ^ pmac->c[i]) & cmask;
760 maxpad -= SHA_DIGEST_LENGTH;
762 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
766 for (res = 0, i = 0; i < SHA_DIGEST_LENGTH; i++)
767 res |= out[i] ^ pmac->c[i];
768 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
772 pad = (pad & ~res) | (maxpad & res);
773 out = out + len - 1 - pad;
774 for (res = 0, i = 0; i < pad; i++)
777 res = (0 - res) >> (sizeof(res) * 8 - 1);
782 # if defined(STITCHED_DECRYPT_CALL)
783 if (len >= 1024 && ctx->key_len == 32) {
784 if (sha_off %= SHA_CBLOCK)
785 blocks = (len - 3 * SHA_CBLOCK) / SHA_CBLOCK;
787 blocks = (len - 2 * SHA_CBLOCK) / SHA_CBLOCK;
788 aes_off = len - blocks * SHA_CBLOCK;
790 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
791 SHA1_Update(&key->md, out, sha_off);
792 aesni256_cbc_sha1_dec(in + aes_off,
793 out + aes_off, blocks, &key->ks,
794 ctx->iv, &key->md, out + sha_off);
796 sha_off += blocks *= SHA_CBLOCK;
800 key->md.Nh += blocks >> 29;
801 key->md.Nl += blocks <<= 3;
802 if (key->md.Nl < (unsigned int)blocks)
806 /* decrypt HMAC|padding at once */
807 aesni_cbc_encrypt(in, out, len, &key->ks,
808 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
810 SHA1_Update(&key->md, out, len);
817 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
820 EVP_AES_HMAC_SHA1 *key = data(ctx);
823 case EVP_CTRL_AEAD_SET_MAC_KEY:
826 unsigned char hmac_key[64];
828 memset(hmac_key, 0, sizeof(hmac_key));
830 if (arg > (int)sizeof(hmac_key)) {
831 SHA1_Init(&key->head);
832 SHA1_Update(&key->head, ptr, arg);
833 SHA1_Final(hmac_key, &key->head);
835 memcpy(hmac_key, ptr, arg);
838 for (i = 0; i < sizeof(hmac_key); i++)
839 hmac_key[i] ^= 0x36; /* ipad */
840 SHA1_Init(&key->head);
841 SHA1_Update(&key->head, hmac_key, sizeof(hmac_key));
843 for (i = 0; i < sizeof(hmac_key); i++)
844 hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
845 SHA1_Init(&key->tail);
846 SHA1_Update(&key->tail, hmac_key, sizeof(hmac_key));
848 OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
852 case EVP_CTRL_AEAD_TLS1_AAD:
854 unsigned char *p = ptr;
857 if (arg != EVP_AEAD_TLS1_AAD_LEN)
860 len = p[arg - 2] << 8 | p[arg - 1];
862 if (EVP_CIPHER_CTX_encrypting(ctx)) {
863 key->payload_length = len;
864 if ((key->aux.tls_ver =
865 p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
866 len -= AES_BLOCK_SIZE;
867 p[arg - 2] = len >> 8;
871 SHA1_Update(&key->md, p, arg);
873 return (int)(((len + SHA_DIGEST_LENGTH +
874 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
877 memcpy(key->aux.tls_aad, ptr, arg);
878 key->payload_length = arg;
880 return SHA_DIGEST_LENGTH;
883 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
884 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
885 return (int)(5 + 16 + ((arg + 20 + 16) & -16));
886 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
888 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
889 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
890 unsigned int n4x = 1, x4;
891 unsigned int frag, last, packlen, inp_len;
893 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
896 inp_len = param->inp[11] << 8 | param->inp[12];
898 if (EVP_CIPHER_CTX_encrypting(ctx)) {
899 if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION)
904 return 0; /* too short */
906 if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5))
908 } else if ((n4x = param->interleave / 4) && n4x <= 2)
909 inp_len = param->len;
914 SHA1_Update(&key->md, param->inp, 13);
919 frag = inp_len >> n4x;
920 last = inp_len + frag - (frag << n4x);
921 if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) {
926 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
927 packlen = (packlen << n4x) - packlen;
928 packlen += 5 + 16 + ((last + 20 + 16) & -16);
930 param->interleave = x4;
934 return -1; /* not yet */
936 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
938 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
939 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
941 return (int)tls1_1_multi_block_encrypt(key, param->out,
942 param->inp, param->len,
943 param->interleave / 4);
945 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
952 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher = {
953 # ifdef NID_aes_128_cbc_hmac_sha1
954 NID_aes_128_cbc_hmac_sha1,
958 AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE,
959 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
960 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
961 aesni_cbc_hmac_sha1_init_key,
962 aesni_cbc_hmac_sha1_cipher,
964 sizeof(EVP_AES_HMAC_SHA1),
965 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
966 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
967 aesni_cbc_hmac_sha1_ctrl,
971 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher = {
972 # ifdef NID_aes_256_cbc_hmac_sha1
973 NID_aes_256_cbc_hmac_sha1,
977 AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE,
978 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
979 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
980 aesni_cbc_hmac_sha1_init_key,
981 aesni_cbc_hmac_sha1_cipher,
983 sizeof(EVP_AES_HMAC_SHA1),
984 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
985 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
986 aesni_cbc_hmac_sha1_ctrl,
990 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
992 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
993 &aesni_128_cbc_hmac_sha1_cipher : NULL);
996 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
998 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
999 &aesni_256_cbc_hmac_sha1_cipher : NULL);
1002 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
1007 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)