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>
56 #include <openssl/evp.h>
57 #include <openssl/objects.h>
58 #include <openssl/aes.h>
59 #include <openssl/sha.h>
60 #include <openssl/rand.h>
61 #include "modes_lcl.h"
62 #include "internal/evp_int.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 SHA256_CTX head
, tail
, md
;
83 size_t payload_length
; /* AAD length in decrypt case */
86 unsigned char tls_aad
[16]; /* 13 used */
88 } EVP_AES_HMAC_SHA256
;
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) )
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 int aesni_cbc_sha256_enc(const void *inp
, void *out
, size_t blocks
,
110 const AES_KEY
*key
, unsigned char iv
[16],
111 SHA256_CTX
*ctx
, const void *in0
);
113 # define data(ctx) ((EVP_AES_HMAC_SHA256 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
115 static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX
*ctx
,
116 const unsigned char *inkey
,
117 const unsigned char *iv
, int enc
)
119 EVP_AES_HMAC_SHA256
*key
= data(ctx
);
123 memset(&key
->ks
, 0, sizeof(key
->ks
.rd_key
)),
124 ret
= aesni_set_encrypt_key(inkey
,
125 EVP_CIPHER_CTX_key_length(ctx
) * 8,
128 ret
= aesni_set_decrypt_key(inkey
,
129 EVP_CIPHER_CTX_key_length(ctx
) * 8,
132 SHA256_Init(&key
->head
); /* handy when benchmarking */
133 key
->tail
= key
->head
;
136 key
->payload_length
= NO_PAYLOAD_LENGTH
;
138 return ret
< 0 ? 0 : 1;
141 # define STITCHED_CALL
143 # if !defined(STITCHED_CALL)
147 void sha256_block_data_order(void *c
, const void *p
, size_t len
);
149 static void sha256_update(SHA256_CTX
*c
, const void *data
, size_t len
)
151 const unsigned char *ptr
= data
;
154 if ((res
= c
->num
)) {
155 res
= SHA256_CBLOCK
- res
;
158 SHA256_Update(c
, ptr
, res
);
163 res
= len
% SHA256_CBLOCK
;
167 sha256_block_data_order(c
, ptr
, len
/ SHA256_CBLOCK
);
172 if (c
->Nl
< (unsigned int)len
)
177 SHA256_Update(c
, ptr
, res
);
180 # ifdef SHA256_Update
181 # undef SHA256_Update
183 # define SHA256_Update sha256_update
185 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
188 unsigned int A
[8], B
[8], C
[8], D
[8], E
[8], F
[8], G
[8], H
[8];
191 const unsigned char *ptr
;
195 void sha256_multi_block(SHA256_MB_CTX
*, const HASH_DESC
*, int);
198 const unsigned char *inp
;
204 void aesni_multi_cbc_encrypt(CIPH_DESC
*, void *, int);
206 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256
*key
,
208 const unsigned char *inp
,
209 size_t inp_len
, int n4x
)
210 { /* n4x is 1 or 2 */
211 HASH_DESC hash_d
[8], edges
[8];
213 unsigned char storage
[sizeof(SHA256_MB_CTX
) + 32];
220 unsigned int frag
, last
, packlen
, i
, x4
= 4 * n4x
, minblocks
, processed
=
228 /* ask for IVs in bulk */
229 if (RAND_bytes((IVs
= blocks
[0].c
), 16 * x4
) <= 0)
233 ctx
= (SHA256_MB_CTX
*) (storage
+ 32 - ((size_t)storage
% 32));
235 frag
= (unsigned int)inp_len
>> (1 + n4x
);
236 last
= (unsigned int)inp_len
+ frag
- (frag
<< (1 + n4x
));
237 if (last
> frag
&& ((last
+ 13 + 9) % 64) < (x4
- 1)) {
242 packlen
= 5 + 16 + ((frag
+ 32 + 16) & -16);
244 /* populate descriptors with pointers and IVs */
247 /* 5+16 is place for header and explicit IV */
248 ciph_d
[0].out
= out
+ 5 + 16;
249 memcpy(ciph_d
[0].out
- 16, IVs
, 16);
250 memcpy(ciph_d
[0].iv
, IVs
, 16);
253 for (i
= 1; i
< x4
; i
++) {
254 ciph_d
[i
].inp
= hash_d
[i
].ptr
= hash_d
[i
- 1].ptr
+ frag
;
255 ciph_d
[i
].out
= ciph_d
[i
- 1].out
+ packlen
;
256 memcpy(ciph_d
[i
].out
- 16, IVs
, 16);
257 memcpy(ciph_d
[i
].iv
, IVs
, 16);
262 memcpy(blocks
[0].c
, key
->md
.data
, 8);
263 seqnum
= BSWAP8(blocks
[0].q
[0]);
265 for (i
= 0; i
< x4
; i
++) {
266 unsigned int len
= (i
== (x4
- 1) ? last
: frag
);
267 # if !defined(BSWAP8)
268 unsigned int carry
, j
;
271 ctx
->A
[i
] = key
->md
.h
[0];
272 ctx
->B
[i
] = key
->md
.h
[1];
273 ctx
->C
[i
] = key
->md
.h
[2];
274 ctx
->D
[i
] = key
->md
.h
[3];
275 ctx
->E
[i
] = key
->md
.h
[4];
276 ctx
->F
[i
] = key
->md
.h
[5];
277 ctx
->G
[i
] = key
->md
.h
[6];
278 ctx
->H
[i
] = key
->md
.h
[7];
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 sha256_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 sha256_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 sha256_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 sha256_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
.h
[0];
380 blocks
[i
].d
[1] = BSWAP4(ctx
->B
[i
]);
381 ctx
->B
[i
] = key
->tail
.h
[1];
382 blocks
[i
].d
[2] = BSWAP4(ctx
->C
[i
]);
383 ctx
->C
[i
] = key
->tail
.h
[2];
384 blocks
[i
].d
[3] = BSWAP4(ctx
->D
[i
]);
385 ctx
->D
[i
] = key
->tail
.h
[3];
386 blocks
[i
].d
[4] = BSWAP4(ctx
->E
[i
]);
387 ctx
->E
[i
] = key
->tail
.h
[4];
388 blocks
[i
].d
[5] = BSWAP4(ctx
->F
[i
]);
389 ctx
->F
[i
] = key
->tail
.h
[5];
390 blocks
[i
].d
[6] = BSWAP4(ctx
->G
[i
]);
391 ctx
->G
[i
] = key
->tail
.h
[6];
392 blocks
[i
].d
[7] = BSWAP4(ctx
->H
[i
]);
393 ctx
->H
[i
] = key
->tail
.h
[7];
394 blocks
[i
].c
[32] = 0x80;
395 blocks
[i
].d
[15] = BSWAP4((64 + 32) * 8);
397 PUTU32(blocks
[i
].c
+ 0, ctx
->A
[i
]);
398 ctx
->A
[i
] = key
->tail
.h
[0];
399 PUTU32(blocks
[i
].c
+ 4, ctx
->B
[i
]);
400 ctx
->B
[i
] = key
->tail
.h
[1];
401 PUTU32(blocks
[i
].c
+ 8, ctx
->C
[i
]);
402 ctx
->C
[i
] = key
->tail
.h
[2];
403 PUTU32(blocks
[i
].c
+ 12, ctx
->D
[i
]);
404 ctx
->D
[i
] = key
->tail
.h
[3];
405 PUTU32(blocks
[i
].c
+ 16, ctx
->E
[i
]);
406 ctx
->E
[i
] = key
->tail
.h
[4];
407 PUTU32(blocks
[i
].c
+ 20, ctx
->F
[i
]);
408 ctx
->F
[i
] = key
->tail
.h
[5];
409 PUTU32(blocks
[i
].c
+ 24, ctx
->G
[i
]);
410 ctx
->G
[i
] = key
->tail
.h
[6];
411 PUTU32(blocks
[i
].c
+ 28, ctx
->H
[i
]);
412 ctx
->H
[i
] = key
->tail
.h
[7];
413 blocks
[i
].c
[32] = 0x80;
414 PUTU32(blocks
[i
].c
+ 60, (64 + 32) * 8);
416 edges
[i
].ptr
= blocks
[i
].c
;
421 sha256_multi_block(ctx
, edges
, n4x
);
423 for (i
= 0; i
< x4
; i
++) {
424 unsigned int len
= (i
== (x4
- 1) ? last
: frag
), pad
, j
;
425 unsigned char *out0
= out
;
427 memcpy(ciph_d
[i
].out
, ciph_d
[i
].inp
, len
- processed
);
428 ciph_d
[i
].inp
= ciph_d
[i
].out
;
433 PUTU32(out
+ 0, ctx
->A
[i
]);
434 PUTU32(out
+ 4, ctx
->B
[i
]);
435 PUTU32(out
+ 8, ctx
->C
[i
]);
436 PUTU32(out
+ 12, ctx
->D
[i
]);
437 PUTU32(out
+ 16, ctx
->E
[i
]);
438 PUTU32(out
+ 20, ctx
->F
[i
]);
439 PUTU32(out
+ 24, ctx
->G
[i
]);
440 PUTU32(out
+ 28, ctx
->H
[i
]);
446 for (j
= 0; j
<= pad
; j
++)
450 ciph_d
[i
].blocks
= (len
- processed
) / 16;
451 len
+= 16; /* account for explicit iv */
454 out0
[0] = ((u8
*)key
->md
.data
)[8];
455 out0
[1] = ((u8
*)key
->md
.data
)[9];
456 out0
[2] = ((u8
*)key
->md
.data
)[10];
457 out0
[3] = (u8
)(len
>> 8);
464 aesni_multi_cbc_encrypt(ciph_d
, &key
->ks
, n4x
);
466 OPENSSL_cleanse(blocks
, sizeof(blocks
));
467 OPENSSL_cleanse(ctx
, sizeof(*ctx
));
473 static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX
*ctx
,
475 const unsigned char *in
, size_t len
)
477 EVP_AES_HMAC_SHA256
*key
= data(ctx
);
479 size_t plen
= key
->payload_length
, iv
= 0, /* explicit IV in TLS 1.1 and
482 # if defined(STITCHED_CALL)
483 size_t aes_off
= 0, blocks
;
485 sha_off
= SHA256_CBLOCK
- key
->md
.num
;
488 key
->payload_length
= NO_PAYLOAD_LENGTH
;
490 if (len
% AES_BLOCK_SIZE
)
493 if (EVP_CIPHER_CTX_encrypting(ctx
)) {
494 if (plen
== NO_PAYLOAD_LENGTH
)
497 ((plen
+ SHA256_DIGEST_LENGTH
+
498 AES_BLOCK_SIZE
) & -AES_BLOCK_SIZE
))
500 else if (key
->aux
.tls_ver
>= TLS1_1_VERSION
)
503 # if defined(STITCHED_CALL)
505 * Assembly stitch handles AVX-capable processors, but its
506 * performance is not optimal on AMD Jaguar, ~40% worse, for
507 * unknown reasons. Incidentally processor in question supports
508 * AVX, but not AMD-specific XOP extension, which can be used
509 * to identify it and avoid stitch invocation. So that after we
510 * establish that current CPU supports AVX, we even see if it's
511 * either even XOP-capable Bulldozer-based or GenuineIntel one.
513 if (OPENSSL_ia32cap_P
[1] & (1 << (60 - 32)) && /* AVX? */
514 ((OPENSSL_ia32cap_P
[1] & (1 << (43 - 32))) /* XOP? */
515 | (OPENSSL_ia32cap_P
[0] & (1<<30))) && /* "Intel CPU"? */
516 plen
> (sha_off
+ iv
) &&
517 (blocks
= (plen
- (sha_off
+ iv
)) / SHA256_CBLOCK
)) {
518 SHA256_Update(&key
->md
, in
+ iv
, sha_off
);
520 (void)aesni_cbc_sha256_enc(in
, out
, blocks
, &key
->ks
,
521 EVP_CIPHER_CTX_iv_noconst(ctx
),
522 &key
->md
, in
+ iv
+ sha_off
);
523 blocks
*= SHA256_CBLOCK
;
526 key
->md
.Nh
+= blocks
>> 29;
527 key
->md
.Nl
+= blocks
<<= 3;
528 if (key
->md
.Nl
< (unsigned int)blocks
)
535 SHA256_Update(&key
->md
, in
+ sha_off
, plen
- sha_off
);
537 if (plen
!= len
) { /* "TLS" mode of operation */
539 memcpy(out
+ aes_off
, in
+ aes_off
, plen
- aes_off
);
541 /* calculate HMAC and append it to payload */
542 SHA256_Final(out
+ plen
, &key
->md
);
544 SHA256_Update(&key
->md
, out
+ plen
, SHA256_DIGEST_LENGTH
);
545 SHA256_Final(out
+ plen
, &key
->md
);
547 /* pad the payload|hmac */
548 plen
+= SHA256_DIGEST_LENGTH
;
549 for (l
= len
- plen
- 1; plen
< len
; plen
++)
551 /* encrypt HMAC|padding at once */
552 aesni_cbc_encrypt(out
+ aes_off
, out
+ aes_off
, len
- aes_off
,
553 &key
->ks
, EVP_CIPHER_CTX_iv_noconst(ctx
), 1);
555 aesni_cbc_encrypt(in
+ aes_off
, out
+ aes_off
, len
- aes_off
,
556 &key
->ks
, EVP_CIPHER_CTX_iv_noconst(ctx
), 1);
560 unsigned int u
[SHA256_DIGEST_LENGTH
/ sizeof(unsigned int)];
561 unsigned char c
[64 + SHA256_DIGEST_LENGTH
];
564 /* arrange cache line alignment */
565 pmac
= (void *)(((size_t)mac
.c
+ 63) & ((size_t)0 - 64));
567 /* decrypt HMAC|padding at once */
568 aesni_cbc_encrypt(in
, out
, len
, &key
->ks
,
569 EVP_CIPHER_CTX_iv_noconst(ctx
), 0);
571 if (plen
!= NO_PAYLOAD_LENGTH
) { /* "TLS" mode of operation */
572 size_t inp_len
, mask
, j
, i
;
573 unsigned int res
, maxpad
, pad
, bitlen
;
576 unsigned int u
[SHA_LBLOCK
];
577 unsigned char c
[SHA256_CBLOCK
];
578 } *data
= (void *)key
->md
.data
;
580 if ((key
->aux
.tls_aad
[plen
- 4] << 8 | key
->aux
.tls_aad
[plen
- 3])
584 if (len
< (iv
+ SHA256_DIGEST_LENGTH
+ 1))
587 /* omit explicit iv */
591 /* figure out payload length */
593 maxpad
= len
- (SHA256_DIGEST_LENGTH
+ 1);
594 maxpad
|= (255 - maxpad
) >> (sizeof(maxpad
) * 8 - 8);
597 inp_len
= len
- (SHA256_DIGEST_LENGTH
+ pad
+ 1);
598 mask
= (0 - ((inp_len
- len
) >> (sizeof(inp_len
) * 8 - 1)));
602 key
->aux
.tls_aad
[plen
- 2] = inp_len
>> 8;
603 key
->aux
.tls_aad
[plen
- 1] = inp_len
;
607 SHA256_Update(&key
->md
, key
->aux
.tls_aad
, plen
);
610 len
-= SHA256_DIGEST_LENGTH
; /* amend mac */
611 if (len
>= (256 + SHA256_CBLOCK
)) {
612 j
= (len
- (256 + SHA256_CBLOCK
)) & (0 - SHA256_CBLOCK
);
613 j
+= SHA256_CBLOCK
- key
->md
.num
;
614 SHA256_Update(&key
->md
, out
, j
);
620 /* but pretend as if we hashed padded payload */
621 bitlen
= key
->md
.Nl
+ (inp_len
<< 3); /* at most 18 bits */
623 bitlen
= BSWAP4(bitlen
);
626 mac
.c
[1] = (unsigned char)(bitlen
>> 16);
627 mac
.c
[2] = (unsigned char)(bitlen
>> 8);
628 mac
.c
[3] = (unsigned char)bitlen
;
641 for (res
= key
->md
.num
, j
= 0; j
< len
; j
++) {
643 mask
= (j
- inp_len
) >> (sizeof(j
) * 8 - 8);
645 c
|= 0x80 & ~mask
& ~((inp_len
- j
) >> (sizeof(j
) * 8 - 8));
646 data
->c
[res
++] = (unsigned char)c
;
648 if (res
!= SHA256_CBLOCK
)
651 /* j is not incremented yet */
652 mask
= 0 - ((inp_len
+ 7 - j
) >> (sizeof(j
) * 8 - 1));
653 data
->u
[SHA_LBLOCK
- 1] |= bitlen
& mask
;
654 sha256_block_data_order(&key
->md
, data
, 1);
655 mask
&= 0 - ((j
- inp_len
- 72) >> (sizeof(j
) * 8 - 1));
656 pmac
->u
[0] |= key
->md
.h
[0] & mask
;
657 pmac
->u
[1] |= key
->md
.h
[1] & mask
;
658 pmac
->u
[2] |= key
->md
.h
[2] & mask
;
659 pmac
->u
[3] |= key
->md
.h
[3] & mask
;
660 pmac
->u
[4] |= key
->md
.h
[4] & mask
;
661 pmac
->u
[5] |= key
->md
.h
[5] & mask
;
662 pmac
->u
[6] |= key
->md
.h
[6] & mask
;
663 pmac
->u
[7] |= key
->md
.h
[7] & mask
;
667 for (i
= res
; i
< SHA256_CBLOCK
; i
++, j
++)
670 if (res
> SHA256_CBLOCK
- 8) {
671 mask
= 0 - ((inp_len
+ 8 - j
) >> (sizeof(j
) * 8 - 1));
672 data
->u
[SHA_LBLOCK
- 1] |= bitlen
& mask
;
673 sha256_block_data_order(&key
->md
, data
, 1);
674 mask
&= 0 - ((j
- inp_len
- 73) >> (sizeof(j
) * 8 - 1));
675 pmac
->u
[0] |= key
->md
.h
[0] & mask
;
676 pmac
->u
[1] |= key
->md
.h
[1] & mask
;
677 pmac
->u
[2] |= key
->md
.h
[2] & mask
;
678 pmac
->u
[3] |= key
->md
.h
[3] & mask
;
679 pmac
->u
[4] |= key
->md
.h
[4] & mask
;
680 pmac
->u
[5] |= key
->md
.h
[5] & mask
;
681 pmac
->u
[6] |= key
->md
.h
[6] & mask
;
682 pmac
->u
[7] |= key
->md
.h
[7] & mask
;
684 memset(data
, 0, SHA256_CBLOCK
);
687 data
->u
[SHA_LBLOCK
- 1] = bitlen
;
688 sha256_block_data_order(&key
->md
, data
, 1);
689 mask
= 0 - ((j
- inp_len
- 73) >> (sizeof(j
) * 8 - 1));
690 pmac
->u
[0] |= key
->md
.h
[0] & mask
;
691 pmac
->u
[1] |= key
->md
.h
[1] & mask
;
692 pmac
->u
[2] |= key
->md
.h
[2] & mask
;
693 pmac
->u
[3] |= key
->md
.h
[3] & mask
;
694 pmac
->u
[4] |= key
->md
.h
[4] & mask
;
695 pmac
->u
[5] |= key
->md
.h
[5] & mask
;
696 pmac
->u
[6] |= key
->md
.h
[6] & mask
;
697 pmac
->u
[7] |= key
->md
.h
[7] & mask
;
700 pmac
->u
[0] = BSWAP4(pmac
->u
[0]);
701 pmac
->u
[1] = BSWAP4(pmac
->u
[1]);
702 pmac
->u
[2] = BSWAP4(pmac
->u
[2]);
703 pmac
->u
[3] = BSWAP4(pmac
->u
[3]);
704 pmac
->u
[4] = BSWAP4(pmac
->u
[4]);
705 pmac
->u
[5] = BSWAP4(pmac
->u
[5]);
706 pmac
->u
[6] = BSWAP4(pmac
->u
[6]);
707 pmac
->u
[7] = BSWAP4(pmac
->u
[7]);
709 for (i
= 0; i
< 8; 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
+= SHA256_DIGEST_LENGTH
;
719 SHA256_Update(&key
->md
, out
, inp_len
);
721 SHA256_Final(pmac
->c
, &key
->md
);
724 unsigned int inp_blocks
, pad_blocks
;
726 /* but pretend as if we hashed padded payload */
728 1 + ((SHA256_CBLOCK
- 9 - res
) >> (sizeof(res
) * 8 - 1));
729 res
+= (unsigned int)(len
- inp_len
);
730 pad_blocks
= res
/ SHA256_CBLOCK
;
731 res
%= SHA256_CBLOCK
;
733 1 + ((SHA256_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 SHA256_Update(&key
->md
, pmac
->c
, SHA256_DIGEST_LENGTH
);
740 SHA256_Final(pmac
->c
, &key
->md
);
748 out
+ len
- 1 - maxpad
- SHA256_DIGEST_LENGTH
;
749 size_t off
= out
- p
;
750 unsigned int c
, cmask
;
752 maxpad
+= SHA256_DIGEST_LENGTH
;
753 for (res
= 0, i
= 0, j
= 0; j
< maxpad
; j
++) {
756 ((int)(j
- off
- SHA256_DIGEST_LENGTH
)) >>
757 (sizeof(int) * 8 - 1);
758 res
|= (c
^ pad
) & ~cmask
; /* ... and padding */
759 cmask
&= ((int)(off
- 1 - j
)) >> (sizeof(int) * 8 - 1);
760 res
|= (c
^ pmac
->c
[i
]) & cmask
;
763 maxpad
-= SHA256_DIGEST_LENGTH
;
765 res
= 0 - ((0 - res
) >> (sizeof(res
) * 8 - 1));
769 for (res
= 0, i
= 0; i
< SHA256_DIGEST_LENGTH
; i
++)
770 res
|= out
[i
] ^ pmac
->c
[i
];
771 res
= 0 - ((0 - res
) >> (sizeof(res
) * 8 - 1));
775 pad
= (pad
& ~res
) | (maxpad
& res
);
776 out
= out
+ len
- 1 - pad
;
777 for (res
= 0, i
= 0; i
< pad
; i
++)
780 res
= (0 - res
) >> (sizeof(res
) * 8 - 1);
785 SHA256_Update(&key
->md
, out
, len
);
792 static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX
*ctx
, int type
, int arg
,
795 EVP_AES_HMAC_SHA256
*key
= data(ctx
);
796 unsigned int u_arg
= (unsigned int)arg
;
799 case EVP_CTRL_AEAD_SET_MAC_KEY
:
802 unsigned char hmac_key
[64];
804 memset(hmac_key
, 0, sizeof(hmac_key
));
809 if (u_arg
> sizeof(hmac_key
)) {
810 SHA256_Init(&key
->head
);
811 SHA256_Update(&key
->head
, ptr
, arg
);
812 SHA256_Final(hmac_key
, &key
->head
);
814 memcpy(hmac_key
, ptr
, arg
);
817 for (i
= 0; i
< sizeof(hmac_key
); i
++)
818 hmac_key
[i
] ^= 0x36; /* ipad */
819 SHA256_Init(&key
->head
);
820 SHA256_Update(&key
->head
, hmac_key
, sizeof(hmac_key
));
822 for (i
= 0; i
< sizeof(hmac_key
); i
++)
823 hmac_key
[i
] ^= 0x36 ^ 0x5c; /* opad */
824 SHA256_Init(&key
->tail
);
825 SHA256_Update(&key
->tail
, hmac_key
, sizeof(hmac_key
));
827 OPENSSL_cleanse(hmac_key
, sizeof(hmac_key
));
831 case EVP_CTRL_AEAD_TLS1_AAD
:
833 unsigned char *p
= ptr
;
834 unsigned int len
= p
[arg
- 2] << 8 | p
[arg
- 1];
836 if (arg
!= EVP_AEAD_TLS1_AAD_LEN
)
839 if (EVP_CIPHER_CTX_encrypting(ctx
)) {
840 key
->payload_length
= len
;
841 if ((key
->aux
.tls_ver
=
842 p
[arg
- 4] << 8 | p
[arg
- 3]) >= TLS1_1_VERSION
) {
843 len
-= AES_BLOCK_SIZE
;
844 p
[arg
- 2] = len
>> 8;
848 SHA256_Update(&key
->md
, p
, arg
);
850 return (int)(((len
+ SHA256_DIGEST_LENGTH
+
851 AES_BLOCK_SIZE
) & -AES_BLOCK_SIZE
)
854 memcpy(key
->aux
.tls_aad
, ptr
, arg
);
855 key
->payload_length
= arg
;
857 return SHA256_DIGEST_LENGTH
;
860 # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
861 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE
:
862 return (int)(5 + 16 + ((arg
+ 32 + 16) & -16));
863 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD
:
865 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*param
=
866 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*) ptr
;
867 unsigned int n4x
= 1, x4
;
868 unsigned int frag
, last
, packlen
, inp_len
;
873 if (u_arg
< sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
))
876 inp_len
= param
->inp
[11] << 8 | param
->inp
[12];
878 if (EVP_CIPHER_CTX_encrypting(ctx
)) {
879 if ((param
->inp
[9] << 8 | param
->inp
[10]) < TLS1_1_VERSION
)
884 return 0; /* too short */
886 if (inp_len
>= 8192 && OPENSSL_ia32cap_P
[2] & (1 << 5))
888 } else if ((n4x
= param
->interleave
/ 4) && n4x
<= 2)
889 inp_len
= param
->len
;
894 SHA256_Update(&key
->md
, param
->inp
, 13);
899 frag
= inp_len
>> n4x
;
900 last
= inp_len
+ frag
- (frag
<< n4x
);
901 if (last
> frag
&& ((last
+ 13 + 9) % 64 < (x4
- 1))) {
906 packlen
= 5 + 16 + ((frag
+ 32 + 16) & -16);
907 packlen
= (packlen
<< n4x
) - packlen
;
908 packlen
+= 5 + 16 + ((last
+ 32 + 16) & -16);
910 param
->interleave
= x4
;
914 return -1; /* not yet */
916 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT
:
918 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*param
=
919 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*) ptr
;
921 return (int)tls1_1_multi_block_encrypt(key
, param
->out
,
922 param
->inp
, param
->len
,
923 param
->interleave
/ 4);
925 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT
:
932 static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher
= {
933 # ifdef NID_aes_128_cbc_hmac_sha256
934 NID_aes_128_cbc_hmac_sha256
,
938 AES_BLOCK_SIZE
, 16, AES_BLOCK_SIZE
,
939 EVP_CIPH_CBC_MODE
| EVP_CIPH_FLAG_DEFAULT_ASN1
|
940 EVP_CIPH_FLAG_AEAD_CIPHER
| EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
,
941 aesni_cbc_hmac_sha256_init_key
,
942 aesni_cbc_hmac_sha256_cipher
,
944 sizeof(EVP_AES_HMAC_SHA256
),
945 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_set_asn1_iv
,
946 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_get_asn1_iv
,
947 aesni_cbc_hmac_sha256_ctrl
,
951 static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher
= {
952 # ifdef NID_aes_256_cbc_hmac_sha256
953 NID_aes_256_cbc_hmac_sha256
,
957 AES_BLOCK_SIZE
, 32, AES_BLOCK_SIZE
,
958 EVP_CIPH_CBC_MODE
| EVP_CIPH_FLAG_DEFAULT_ASN1
|
959 EVP_CIPH_FLAG_AEAD_CIPHER
| EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
,
960 aesni_cbc_hmac_sha256_init_key
,
961 aesni_cbc_hmac_sha256_cipher
,
963 sizeof(EVP_AES_HMAC_SHA256
),
964 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_set_asn1_iv
,
965 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_get_asn1_iv
,
966 aesni_cbc_hmac_sha256_ctrl
,
970 const EVP_CIPHER
*EVP_aes_128_cbc_hmac_sha256(void)
972 return ((OPENSSL_ia32cap_P
[1] & AESNI_CAPABLE
) &&
973 aesni_cbc_sha256_enc(NULL
, NULL
, 0, NULL
, NULL
, NULL
, NULL
) ?
974 &aesni_128_cbc_hmac_sha256_cipher
: NULL
);
977 const EVP_CIPHER
*EVP_aes_256_cbc_hmac_sha256(void)
979 return ((OPENSSL_ia32cap_P
[1] & AESNI_CAPABLE
) &&
980 aesni_cbc_sha256_enc(NULL
, NULL
, 0, NULL
, NULL
, NULL
, NULL
) ?
981 &aesni_256_cbc_hmac_sha256_cipher
: NULL
);
984 const EVP_CIPHER
*EVP_aes_128_cbc_hmac_sha256(void)
989 const EVP_CIPHER
*EVP_aes_256_cbc_hmac_sha256(void)