2 * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 * AES low level APIs are deprecated for public use, but still ok for internal
12 * use where we're using them to implement the higher level EVP interface, as is
15 #include "internal/deprecated.h"
19 #include <openssl/opensslconf.h>
20 #include <openssl/evp.h>
21 #include <openssl/objects.h>
22 #include <openssl/aes.h>
23 #include <openssl/sha.h>
24 #include <openssl/rand.h>
25 #include "internal/cryptlib.h"
26 #include "crypto/modes.h"
27 #include "crypto/evp.h"
28 #include "internal/constant_time.h"
32 SHA_CTX head
, tail
, md
;
33 size_t payload_length
; /* AAD length in decrypt case */
36 unsigned char tls_aad
[16]; /* 13 used */
40 #define NO_PAYLOAD_LENGTH ((size_t)-1)
42 #if defined(AES_ASM) && ( \
43 defined(__x86_64) || defined(__x86_64__) || \
44 defined(_M_AMD64) || defined(_M_X64) )
46 # define AESNI_CAPABLE (1<<(57-32))
48 int aesni_set_encrypt_key(const unsigned char *userKey
, int bits
,
50 int aesni_set_decrypt_key(const unsigned char *userKey
, int bits
,
53 void aesni_cbc_encrypt(const unsigned char *in
,
56 const AES_KEY
*key
, unsigned char *ivec
, int enc
);
58 void aesni_cbc_sha1_enc(const void *inp
, void *out
, size_t blocks
,
59 const AES_KEY
*key
, unsigned char iv
[16],
60 SHA_CTX
*ctx
, const void *in0
);
62 void aesni256_cbc_sha1_dec(const void *inp
, void *out
, size_t blocks
,
63 const AES_KEY
*key
, unsigned char iv
[16],
64 SHA_CTX
*ctx
, const void *in0
);
66 # define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
68 static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX
*ctx
,
69 const unsigned char *inkey
,
70 const unsigned char *iv
, int enc
)
72 EVP_AES_HMAC_SHA1
*key
= data(ctx
);
76 ret
= aesni_set_encrypt_key(inkey
,
77 EVP_CIPHER_CTX_key_length(ctx
) * 8,
80 ret
= aesni_set_decrypt_key(inkey
,
81 EVP_CIPHER_CTX_key_length(ctx
) * 8,
84 SHA1_Init(&key
->head
); /* handy when benchmarking */
85 key
->tail
= key
->head
;
88 key
->payload_length
= NO_PAYLOAD_LENGTH
;
90 return ret
< 0 ? 0 : 1;
93 # define STITCHED_CALL
94 # undef STITCHED_DECRYPT_CALL
96 # if !defined(STITCHED_CALL)
100 void sha1_block_data_order(void *c
, const void *p
, size_t len
);
102 static void sha1_update(SHA_CTX
*c
, const void *data
, size_t len
)
104 const unsigned char *ptr
= data
;
107 if ((res
= c
->num
)) {
108 res
= SHA_CBLOCK
- res
;
111 SHA1_Update(c
, ptr
, res
);
116 res
= len
% SHA_CBLOCK
;
120 sha1_block_data_order(c
, ptr
, len
/ SHA_CBLOCK
);
125 if (c
->Nl
< (unsigned int)len
)
130 SHA1_Update(c
, ptr
, res
);
136 # define SHA1_Update sha1_update
138 # if !defined(OPENSSL_NO_MULTIBLOCK)
141 unsigned int A
[8], B
[8], C
[8], D
[8], E
[8];
144 const unsigned char *ptr
;
148 void sha1_multi_block(SHA1_MB_CTX
*, const HASH_DESC
*, int);
151 const unsigned char *inp
;
157 void aesni_multi_cbc_encrypt(CIPH_DESC
*, void *, int);
159 static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1
*key
,
161 const unsigned char *inp
,
162 size_t inp_len
, int n4x
)
163 { /* n4x is 1 or 2 */
164 HASH_DESC hash_d
[8], edges
[8];
166 unsigned char storage
[sizeof(SHA1_MB_CTX
) + 32];
173 unsigned int frag
, last
, packlen
, i
, x4
= 4 * n4x
, minblocks
, processed
=
181 /* ask for IVs in bulk */
182 if (RAND_bytes((IVs
= blocks
[0].c
), 16 * x4
) <= 0)
185 ctx
= (SHA1_MB_CTX
*) (storage
+ 32 - ((size_t)storage
% 32)); /* align */
187 frag
= (unsigned int)inp_len
>> (1 + n4x
);
188 last
= (unsigned int)inp_len
+ frag
- (frag
<< (1 + n4x
));
189 if (last
> frag
&& ((last
+ 13 + 9) % 64) < (x4
- 1)) {
194 packlen
= 5 + 16 + ((frag
+ 20 + 16) & -16);
196 /* populate descriptors with pointers and IVs */
199 /* 5+16 is place for header and explicit IV */
200 ciph_d
[0].out
= out
+ 5 + 16;
201 memcpy(ciph_d
[0].out
- 16, IVs
, 16);
202 memcpy(ciph_d
[0].iv
, IVs
, 16);
205 for (i
= 1; i
< x4
; i
++) {
206 ciph_d
[i
].inp
= hash_d
[i
].ptr
= hash_d
[i
- 1].ptr
+ frag
;
207 ciph_d
[i
].out
= ciph_d
[i
- 1].out
+ packlen
;
208 memcpy(ciph_d
[i
].out
- 16, IVs
, 16);
209 memcpy(ciph_d
[i
].iv
, IVs
, 16);
214 memcpy(blocks
[0].c
, key
->md
.data
, 8);
215 seqnum
= BSWAP8(blocks
[0].q
[0]);
217 for (i
= 0; i
< x4
; i
++) {
218 unsigned int len
= (i
== (x4
- 1) ? last
: frag
);
219 # if !defined(BSWAP8)
220 unsigned int carry
, j
;
223 ctx
->A
[i
] = key
->md
.h0
;
224 ctx
->B
[i
] = key
->md
.h1
;
225 ctx
->C
[i
] = key
->md
.h2
;
226 ctx
->D
[i
] = key
->md
.h3
;
227 ctx
->E
[i
] = key
->md
.h4
;
231 blocks
[i
].q
[0] = BSWAP8(seqnum
+ i
);
233 for (carry
= i
, j
= 8; j
--;) {
234 blocks
[i
].c
[j
] = ((u8
*)key
->md
.data
)[j
] + carry
;
235 carry
= (blocks
[i
].c
[j
] - carry
) >> (sizeof(carry
) * 8 - 1);
238 blocks
[i
].c
[8] = ((u8
*)key
->md
.data
)[8];
239 blocks
[i
].c
[9] = ((u8
*)key
->md
.data
)[9];
240 blocks
[i
].c
[10] = ((u8
*)key
->md
.data
)[10];
242 blocks
[i
].c
[11] = (u8
)(len
>> 8);
243 blocks
[i
].c
[12] = (u8
)(len
);
245 memcpy(blocks
[i
].c
+ 13, hash_d
[i
].ptr
, 64 - 13);
246 hash_d
[i
].ptr
+= 64 - 13;
247 hash_d
[i
].blocks
= (len
- (64 - 13)) / 64;
249 edges
[i
].ptr
= blocks
[i
].c
;
253 /* hash 13-byte headers and first 64-13 bytes of inputs */
254 sha1_multi_block(ctx
, edges
, n4x
);
255 /* hash bulk inputs */
256 # define MAXCHUNKSIZE 2048
258 # error "MAXCHUNKSIZE is not divisible by 64"
261 * goal is to minimize pressure on L1 cache by moving in shorter steps,
262 * so that hashed data is still in the cache by the time we encrypt it
264 minblocks
= ((frag
<= last
? frag
: last
) - (64 - 13)) / 64;
265 if (minblocks
> MAXCHUNKSIZE
/ 64) {
266 for (i
= 0; i
< x4
; i
++) {
267 edges
[i
].ptr
= hash_d
[i
].ptr
;
268 edges
[i
].blocks
= MAXCHUNKSIZE
/ 64;
269 ciph_d
[i
].blocks
= MAXCHUNKSIZE
/ 16;
272 sha1_multi_block(ctx
, edges
, n4x
);
273 aesni_multi_cbc_encrypt(ciph_d
, &key
->ks
, n4x
);
275 for (i
= 0; i
< x4
; i
++) {
276 edges
[i
].ptr
= hash_d
[i
].ptr
+= MAXCHUNKSIZE
;
277 hash_d
[i
].blocks
-= MAXCHUNKSIZE
/ 64;
278 edges
[i
].blocks
= MAXCHUNKSIZE
/ 64;
279 ciph_d
[i
].inp
+= MAXCHUNKSIZE
;
280 ciph_d
[i
].out
+= MAXCHUNKSIZE
;
281 ciph_d
[i
].blocks
= MAXCHUNKSIZE
/ 16;
282 memcpy(ciph_d
[i
].iv
, ciph_d
[i
].out
- 16, 16);
284 processed
+= MAXCHUNKSIZE
;
285 minblocks
-= MAXCHUNKSIZE
/ 64;
286 } while (minblocks
> MAXCHUNKSIZE
/ 64);
290 sha1_multi_block(ctx
, hash_d
, n4x
);
292 memset(blocks
, 0, sizeof(blocks
));
293 for (i
= 0; i
< x4
; i
++) {
294 unsigned int len
= (i
== (x4
- 1) ? last
: frag
),
295 off
= hash_d
[i
].blocks
* 64;
296 const unsigned char *ptr
= hash_d
[i
].ptr
+ off
;
298 off
= (len
- processed
) - (64 - 13) - off
; /* remainder actually */
299 memcpy(blocks
[i
].c
, ptr
, off
);
300 blocks
[i
].c
[off
] = 0x80;
301 len
+= 64 + 13; /* 64 is HMAC header */
302 len
*= 8; /* convert to bits */
303 if (off
< (64 - 8)) {
305 blocks
[i
].d
[15] = BSWAP4(len
);
307 PUTU32(blocks
[i
].c
+ 60, len
);
312 blocks
[i
].d
[31] = BSWAP4(len
);
314 PUTU32(blocks
[i
].c
+ 124, len
);
318 edges
[i
].ptr
= blocks
[i
].c
;
321 /* hash input tails and finalize */
322 sha1_multi_block(ctx
, edges
, n4x
);
324 memset(blocks
, 0, sizeof(blocks
));
325 for (i
= 0; i
< x4
; i
++) {
327 blocks
[i
].d
[0] = BSWAP4(ctx
->A
[i
]);
328 ctx
->A
[i
] = key
->tail
.h0
;
329 blocks
[i
].d
[1] = BSWAP4(ctx
->B
[i
]);
330 ctx
->B
[i
] = key
->tail
.h1
;
331 blocks
[i
].d
[2] = BSWAP4(ctx
->C
[i
]);
332 ctx
->C
[i
] = key
->tail
.h2
;
333 blocks
[i
].d
[3] = BSWAP4(ctx
->D
[i
]);
334 ctx
->D
[i
] = key
->tail
.h3
;
335 blocks
[i
].d
[4] = BSWAP4(ctx
->E
[i
]);
336 ctx
->E
[i
] = key
->tail
.h4
;
337 blocks
[i
].c
[20] = 0x80;
338 blocks
[i
].d
[15] = BSWAP4((64 + 20) * 8);
340 PUTU32(blocks
[i
].c
+ 0, ctx
->A
[i
]);
341 ctx
->A
[i
] = key
->tail
.h0
;
342 PUTU32(blocks
[i
].c
+ 4, ctx
->B
[i
]);
343 ctx
->B
[i
] = key
->tail
.h1
;
344 PUTU32(blocks
[i
].c
+ 8, ctx
->C
[i
]);
345 ctx
->C
[i
] = key
->tail
.h2
;
346 PUTU32(blocks
[i
].c
+ 12, ctx
->D
[i
]);
347 ctx
->D
[i
] = key
->tail
.h3
;
348 PUTU32(blocks
[i
].c
+ 16, ctx
->E
[i
]);
349 ctx
->E
[i
] = key
->tail
.h4
;
350 blocks
[i
].c
[20] = 0x80;
351 PUTU32(blocks
[i
].c
+ 60, (64 + 20) * 8);
353 edges
[i
].ptr
= blocks
[i
].c
;
358 sha1_multi_block(ctx
, edges
, n4x
);
360 for (i
= 0; i
< x4
; i
++) {
361 unsigned int len
= (i
== (x4
- 1) ? last
: frag
), pad
, j
;
362 unsigned char *out0
= out
;
364 memcpy(ciph_d
[i
].out
, ciph_d
[i
].inp
, len
- processed
);
365 ciph_d
[i
].inp
= ciph_d
[i
].out
;
370 PUTU32(out
+ 0, ctx
->A
[i
]);
371 PUTU32(out
+ 4, ctx
->B
[i
]);
372 PUTU32(out
+ 8, ctx
->C
[i
]);
373 PUTU32(out
+ 12, ctx
->D
[i
]);
374 PUTU32(out
+ 16, ctx
->E
[i
]);
380 for (j
= 0; j
<= pad
; j
++)
384 ciph_d
[i
].blocks
= (len
- processed
) / 16;
385 len
+= 16; /* account for explicit iv */
388 out0
[0] = ((u8
*)key
->md
.data
)[8];
389 out0
[1] = ((u8
*)key
->md
.data
)[9];
390 out0
[2] = ((u8
*)key
->md
.data
)[10];
391 out0
[3] = (u8
)(len
>> 8);
398 aesni_multi_cbc_encrypt(ciph_d
, &key
->ks
, n4x
);
400 OPENSSL_cleanse(blocks
, sizeof(blocks
));
401 OPENSSL_cleanse(ctx
, sizeof(*ctx
));
407 static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
408 const unsigned char *in
, size_t len
)
410 EVP_AES_HMAC_SHA1
*key
= data(ctx
);
412 size_t plen
= key
->payload_length
, iv
= 0, /* explicit IV in TLS 1.1 and
415 # if defined(STITCHED_CALL)
416 size_t aes_off
= 0, blocks
;
418 sha_off
= SHA_CBLOCK
- key
->md
.num
;
421 key
->payload_length
= NO_PAYLOAD_LENGTH
;
423 if (len
% AES_BLOCK_SIZE
)
426 if (EVP_CIPHER_CTX_encrypting(ctx
)) {
427 if (plen
== NO_PAYLOAD_LENGTH
)
430 ((plen
+ SHA_DIGEST_LENGTH
+
431 AES_BLOCK_SIZE
) & -AES_BLOCK_SIZE
))
433 else if (key
->aux
.tls_ver
>= TLS1_1_VERSION
)
436 # if defined(STITCHED_CALL)
437 if (plen
> (sha_off
+ iv
)
438 && (blocks
= (plen
- (sha_off
+ iv
)) / SHA_CBLOCK
)) {
439 SHA1_Update(&key
->md
, in
+ iv
, sha_off
);
441 aesni_cbc_sha1_enc(in
, out
, blocks
, &key
->ks
,
442 EVP_CIPHER_CTX_iv_noconst(ctx
),
443 &key
->md
, in
+ iv
+ sha_off
);
444 blocks
*= SHA_CBLOCK
;
447 key
->md
.Nh
+= blocks
>> 29;
448 key
->md
.Nl
+= blocks
<<= 3;
449 if (key
->md
.Nl
< (unsigned int)blocks
)
456 SHA1_Update(&key
->md
, in
+ sha_off
, plen
- sha_off
);
458 if (plen
!= len
) { /* "TLS" mode of operation */
460 memcpy(out
+ aes_off
, in
+ aes_off
, plen
- aes_off
);
462 /* calculate HMAC and append it to payload */
463 SHA1_Final(out
+ plen
, &key
->md
);
465 SHA1_Update(&key
->md
, out
+ plen
, SHA_DIGEST_LENGTH
);
466 SHA1_Final(out
+ plen
, &key
->md
);
468 /* pad the payload|hmac */
469 plen
+= SHA_DIGEST_LENGTH
;
470 for (l
= len
- plen
- 1; plen
< len
; plen
++)
472 /* encrypt HMAC|padding at once */
473 aesni_cbc_encrypt(out
+ aes_off
, out
+ aes_off
, len
- aes_off
,
474 &key
->ks
, EVP_CIPHER_CTX_iv_noconst(ctx
), 1);
476 aesni_cbc_encrypt(in
+ aes_off
, out
+ aes_off
, len
- aes_off
,
477 &key
->ks
, EVP_CIPHER_CTX_iv_noconst(ctx
), 1);
481 unsigned int u
[SHA_DIGEST_LENGTH
/ sizeof(unsigned int)];
482 unsigned char c
[32 + SHA_DIGEST_LENGTH
];
485 /* arrange cache line alignment */
486 pmac
= (void *)(((size_t)mac
.c
+ 31) & ((size_t)0 - 32));
488 if (plen
!= NO_PAYLOAD_LENGTH
) { /* "TLS" mode of operation */
489 size_t inp_len
, mask
, j
, i
;
490 unsigned int res
, maxpad
, pad
, bitlen
;
493 unsigned int u
[SHA_LBLOCK
];
494 unsigned char c
[SHA_CBLOCK
];
495 } *data
= (void *)key
->md
.data
;
496 # if defined(STITCHED_DECRYPT_CALL)
497 unsigned char tail_iv
[AES_BLOCK_SIZE
];
501 if ((key
->aux
.tls_aad
[plen
- 4] << 8 | key
->aux
.tls_aad
[plen
- 3])
503 if (len
< (AES_BLOCK_SIZE
+ SHA_DIGEST_LENGTH
+ 1))
506 /* omit explicit iv */
507 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx
), in
, AES_BLOCK_SIZE
);
509 in
+= AES_BLOCK_SIZE
;
510 out
+= AES_BLOCK_SIZE
;
511 len
-= AES_BLOCK_SIZE
;
512 } else if (len
< (SHA_DIGEST_LENGTH
+ 1))
515 # if defined(STITCHED_DECRYPT_CALL)
516 if (len
>= 1024 && ctx
->key_len
== 32) {
517 /* decrypt last block */
518 memcpy(tail_iv
, in
+ len
- 2 * AES_BLOCK_SIZE
,
520 aesni_cbc_encrypt(in
+ len
- AES_BLOCK_SIZE
,
521 out
+ len
- AES_BLOCK_SIZE
, AES_BLOCK_SIZE
,
522 &key
->ks
, tail_iv
, 0);
526 /* decrypt HMAC|padding at once */
527 aesni_cbc_encrypt(in
, out
, len
, &key
->ks
,
528 EVP_CIPHER_CTX_iv_noconst(ctx
), 0);
530 /* figure out payload length */
532 maxpad
= len
- (SHA_DIGEST_LENGTH
+ 1);
533 maxpad
|= (255 - maxpad
) >> (sizeof(maxpad
) * 8 - 8);
536 mask
= constant_time_ge(maxpad
, pad
);
539 * If pad is invalid then we will fail the above test but we must
540 * continue anyway because we are in constant time code. However,
541 * we'll use the maxpad value instead of the supplied pad to make
542 * sure we perform well defined pointer arithmetic.
544 pad
= constant_time_select(mask
, pad
, maxpad
);
546 inp_len
= len
- (SHA_DIGEST_LENGTH
+ pad
+ 1);
548 key
->aux
.tls_aad
[plen
- 2] = inp_len
>> 8;
549 key
->aux
.tls_aad
[plen
- 1] = inp_len
;
553 SHA1_Update(&key
->md
, key
->aux
.tls_aad
, plen
);
555 # if defined(STITCHED_DECRYPT_CALL)
557 blocks
= (len
- (256 + 32 + SHA_CBLOCK
)) / SHA_CBLOCK
;
558 aes_off
= len
- AES_BLOCK_SIZE
- blocks
* SHA_CBLOCK
;
559 sha_off
= SHA_CBLOCK
- plen
;
561 aesni_cbc_encrypt(in
, out
, aes_off
, &key
->ks
, ctx
->iv
, 0);
563 SHA1_Update(&key
->md
, out
, sha_off
);
564 aesni256_cbc_sha1_dec(in
+ aes_off
,
565 out
+ aes_off
, blocks
, &key
->ks
,
566 ctx
->iv
, &key
->md
, out
+ sha_off
);
568 sha_off
+= blocks
*= SHA_CBLOCK
;
573 key
->md
.Nl
+= (blocks
<< 3); /* at most 18 bits */
574 memcpy(ctx
->iv
, tail_iv
, AES_BLOCK_SIZE
);
578 # if 1 /* see original reference version in #else */
579 len
-= SHA_DIGEST_LENGTH
; /* amend mac */
580 if (len
>= (256 + SHA_CBLOCK
)) {
581 j
= (len
- (256 + SHA_CBLOCK
)) & (0 - SHA_CBLOCK
);
582 j
+= SHA_CBLOCK
- key
->md
.num
;
583 SHA1_Update(&key
->md
, out
, j
);
589 /* but pretend as if we hashed padded payload */
590 bitlen
= key
->md
.Nl
+ (inp_len
<< 3); /* at most 18 bits */
592 bitlen
= BSWAP4(bitlen
);
595 mac
.c
[1] = (unsigned char)(bitlen
>> 16);
596 mac
.c
[2] = (unsigned char)(bitlen
>> 8);
597 mac
.c
[3] = (unsigned char)bitlen
;
607 for (res
= key
->md
.num
, j
= 0; j
< len
; j
++) {
609 mask
= (j
- inp_len
) >> (sizeof(j
) * 8 - 8);
611 c
|= 0x80 & ~mask
& ~((inp_len
- j
) >> (sizeof(j
) * 8 - 8));
612 data
->c
[res
++] = (unsigned char)c
;
614 if (res
!= SHA_CBLOCK
)
617 /* j is not incremented yet */
618 mask
= 0 - ((inp_len
+ 7 - j
) >> (sizeof(j
) * 8 - 1));
619 data
->u
[SHA_LBLOCK
- 1] |= bitlen
& mask
;
620 sha1_block_data_order(&key
->md
, data
, 1);
621 mask
&= 0 - ((j
- inp_len
- 72) >> (sizeof(j
) * 8 - 1));
622 pmac
->u
[0] |= key
->md
.h0
& mask
;
623 pmac
->u
[1] |= key
->md
.h1
& mask
;
624 pmac
->u
[2] |= key
->md
.h2
& mask
;
625 pmac
->u
[3] |= key
->md
.h3
& mask
;
626 pmac
->u
[4] |= key
->md
.h4
& mask
;
630 for (i
= res
; i
< SHA_CBLOCK
; i
++, j
++)
633 if (res
> SHA_CBLOCK
- 8) {
634 mask
= 0 - ((inp_len
+ 8 - j
) >> (sizeof(j
) * 8 - 1));
635 data
->u
[SHA_LBLOCK
- 1] |= bitlen
& mask
;
636 sha1_block_data_order(&key
->md
, data
, 1);
637 mask
&= 0 - ((j
- inp_len
- 73) >> (sizeof(j
) * 8 - 1));
638 pmac
->u
[0] |= key
->md
.h0
& mask
;
639 pmac
->u
[1] |= key
->md
.h1
& mask
;
640 pmac
->u
[2] |= key
->md
.h2
& mask
;
641 pmac
->u
[3] |= key
->md
.h3
& mask
;
642 pmac
->u
[4] |= key
->md
.h4
& mask
;
644 memset(data
, 0, SHA_CBLOCK
);
647 data
->u
[SHA_LBLOCK
- 1] = bitlen
;
648 sha1_block_data_order(&key
->md
, data
, 1);
649 mask
= 0 - ((j
- inp_len
- 73) >> (sizeof(j
) * 8 - 1));
650 pmac
->u
[0] |= key
->md
.h0
& mask
;
651 pmac
->u
[1] |= key
->md
.h1
& mask
;
652 pmac
->u
[2] |= key
->md
.h2
& mask
;
653 pmac
->u
[3] |= key
->md
.h3
& mask
;
654 pmac
->u
[4] |= key
->md
.h4
& mask
;
657 pmac
->u
[0] = BSWAP4(pmac
->u
[0]);
658 pmac
->u
[1] = BSWAP4(pmac
->u
[1]);
659 pmac
->u
[2] = BSWAP4(pmac
->u
[2]);
660 pmac
->u
[3] = BSWAP4(pmac
->u
[3]);
661 pmac
->u
[4] = BSWAP4(pmac
->u
[4]);
663 for (i
= 0; i
< 5; i
++) {
665 pmac
->c
[4 * i
+ 0] = (unsigned char)(res
>> 24);
666 pmac
->c
[4 * i
+ 1] = (unsigned char)(res
>> 16);
667 pmac
->c
[4 * i
+ 2] = (unsigned char)(res
>> 8);
668 pmac
->c
[4 * i
+ 3] = (unsigned char)res
;
671 len
+= SHA_DIGEST_LENGTH
;
672 # else /* pre-lucky-13 reference version of above */
673 SHA1_Update(&key
->md
, out
, inp_len
);
675 SHA1_Final(pmac
->c
, &key
->md
);
678 unsigned int inp_blocks
, pad_blocks
;
680 /* but pretend as if we hashed padded payload */
682 1 + ((SHA_CBLOCK
- 9 - res
) >> (sizeof(res
) * 8 - 1));
683 res
+= (unsigned int)(len
- inp_len
);
684 pad_blocks
= res
/ SHA_CBLOCK
;
687 1 + ((SHA_CBLOCK
- 9 - res
) >> (sizeof(res
) * 8 - 1));
688 for (; inp_blocks
< pad_blocks
; inp_blocks
++)
689 sha1_block_data_order(&key
->md
, data
, 1);
693 SHA1_Update(&key
->md
, pmac
->c
, SHA_DIGEST_LENGTH
);
694 SHA1_Final(pmac
->c
, &key
->md
);
699 # if 1 /* see original reference version in #else */
701 unsigned char *p
= out
+ len
- 1 - maxpad
- SHA_DIGEST_LENGTH
;
702 size_t off
= out
- p
;
703 unsigned int c
, cmask
;
705 maxpad
+= SHA_DIGEST_LENGTH
;
706 for (res
= 0, i
= 0, j
= 0; j
< maxpad
; j
++) {
709 ((int)(j
- off
- SHA_DIGEST_LENGTH
)) >> (sizeof(int) *
711 res
|= (c
^ pad
) & ~cmask
; /* ... and padding */
712 cmask
&= ((int)(off
- 1 - j
)) >> (sizeof(int) * 8 - 1);
713 res
|= (c
^ pmac
->c
[i
]) & cmask
;
716 maxpad
-= SHA_DIGEST_LENGTH
;
718 res
= 0 - ((0 - res
) >> (sizeof(res
) * 8 - 1));
721 # else /* pre-lucky-13 reference version of above */
722 for (res
= 0, i
= 0; i
< SHA_DIGEST_LENGTH
; i
++)
723 res
|= out
[i
] ^ pmac
->c
[i
];
724 res
= 0 - ((0 - res
) >> (sizeof(res
) * 8 - 1));
728 pad
= (pad
& ~res
) | (maxpad
& res
);
729 out
= out
+ len
- 1 - pad
;
730 for (res
= 0, i
= 0; i
< pad
; i
++)
733 res
= (0 - res
) >> (sizeof(res
) * 8 - 1);
738 # if defined(STITCHED_DECRYPT_CALL)
739 if (len
>= 1024 && ctx
->key_len
== 32) {
740 if (sha_off
%= SHA_CBLOCK
)
741 blocks
= (len
- 3 * SHA_CBLOCK
) / SHA_CBLOCK
;
743 blocks
= (len
- 2 * SHA_CBLOCK
) / SHA_CBLOCK
;
744 aes_off
= len
- blocks
* SHA_CBLOCK
;
746 aesni_cbc_encrypt(in
, out
, aes_off
, &key
->ks
, ctx
->iv
, 0);
747 SHA1_Update(&key
->md
, out
, sha_off
);
748 aesni256_cbc_sha1_dec(in
+ aes_off
,
749 out
+ aes_off
, blocks
, &key
->ks
,
750 ctx
->iv
, &key
->md
, out
+ sha_off
);
752 sha_off
+= blocks
*= SHA_CBLOCK
;
756 key
->md
.Nh
+= blocks
>> 29;
757 key
->md
.Nl
+= blocks
<<= 3;
758 if (key
->md
.Nl
< (unsigned int)blocks
)
762 /* decrypt HMAC|padding at once */
763 aesni_cbc_encrypt(in
, out
, len
, &key
->ks
,
764 EVP_CIPHER_CTX_iv_noconst(ctx
), 0);
766 SHA1_Update(&key
->md
, out
, len
);
773 static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX
*ctx
, int type
, int arg
,
776 EVP_AES_HMAC_SHA1
*key
= data(ctx
);
779 case EVP_CTRL_AEAD_SET_MAC_KEY
:
782 unsigned char hmac_key
[64];
784 memset(hmac_key
, 0, sizeof(hmac_key
));
786 if (arg
> (int)sizeof(hmac_key
)) {
787 SHA1_Init(&key
->head
);
788 SHA1_Update(&key
->head
, ptr
, arg
);
789 SHA1_Final(hmac_key
, &key
->head
);
791 memcpy(hmac_key
, ptr
, arg
);
794 for (i
= 0; i
< sizeof(hmac_key
); i
++)
795 hmac_key
[i
] ^= 0x36; /* ipad */
796 SHA1_Init(&key
->head
);
797 SHA1_Update(&key
->head
, hmac_key
, sizeof(hmac_key
));
799 for (i
= 0; i
< sizeof(hmac_key
); i
++)
800 hmac_key
[i
] ^= 0x36 ^ 0x5c; /* opad */
801 SHA1_Init(&key
->tail
);
802 SHA1_Update(&key
->tail
, hmac_key
, sizeof(hmac_key
));
804 OPENSSL_cleanse(hmac_key
, sizeof(hmac_key
));
808 case EVP_CTRL_AEAD_TLS1_AAD
:
810 unsigned char *p
= ptr
;
813 if (arg
!= EVP_AEAD_TLS1_AAD_LEN
)
816 len
= p
[arg
- 2] << 8 | p
[arg
- 1];
818 if (EVP_CIPHER_CTX_encrypting(ctx
)) {
819 key
->payload_length
= len
;
820 if ((key
->aux
.tls_ver
=
821 p
[arg
- 4] << 8 | p
[arg
- 3]) >= TLS1_1_VERSION
) {
822 if (len
< AES_BLOCK_SIZE
)
824 len
-= AES_BLOCK_SIZE
;
825 p
[arg
- 2] = len
>> 8;
829 SHA1_Update(&key
->md
, p
, arg
);
831 return (int)(((len
+ SHA_DIGEST_LENGTH
+
832 AES_BLOCK_SIZE
) & -AES_BLOCK_SIZE
)
835 memcpy(key
->aux
.tls_aad
, ptr
, arg
);
836 key
->payload_length
= arg
;
838 return SHA_DIGEST_LENGTH
;
841 # if !defined(OPENSSL_NO_MULTIBLOCK)
842 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE
:
843 return (int)(5 + 16 + ((arg
+ 20 + 16) & -16));
844 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD
:
846 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*param
=
847 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*) ptr
;
848 unsigned int n4x
= 1, x4
;
849 unsigned int frag
, last
, packlen
, inp_len
;
851 if (arg
< (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
))
854 inp_len
= param
->inp
[11] << 8 | param
->inp
[12];
856 if (EVP_CIPHER_CTX_encrypting(ctx
)) {
857 if ((param
->inp
[9] << 8 | param
->inp
[10]) < TLS1_1_VERSION
)
862 return 0; /* too short */
864 if (inp_len
>= 8192 && OPENSSL_ia32cap_P
[2] & (1 << 5))
866 } else if ((n4x
= param
->interleave
/ 4) && n4x
<= 2)
867 inp_len
= param
->len
;
872 SHA1_Update(&key
->md
, param
->inp
, 13);
877 frag
= inp_len
>> n4x
;
878 last
= inp_len
+ frag
- (frag
<< n4x
);
879 if (last
> frag
&& ((last
+ 13 + 9) % 64 < (x4
- 1))) {
884 packlen
= 5 + 16 + ((frag
+ 20 + 16) & -16);
885 packlen
= (packlen
<< n4x
) - packlen
;
886 packlen
+= 5 + 16 + ((last
+ 20 + 16) & -16);
888 param
->interleave
= x4
;
892 return -1; /* not yet */
894 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT
:
896 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*param
=
897 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*) ptr
;
899 return (int)tls1_1_multi_block_encrypt(key
, param
->out
,
900 param
->inp
, param
->len
,
901 param
->interleave
/ 4);
903 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT
:
910 static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher
= {
911 # ifdef NID_aes_128_cbc_hmac_sha1
912 NID_aes_128_cbc_hmac_sha1
,
916 AES_BLOCK_SIZE
, 16, AES_BLOCK_SIZE
,
917 EVP_CIPH_CBC_MODE
| EVP_CIPH_FLAG_DEFAULT_ASN1
|
918 EVP_CIPH_FLAG_AEAD_CIPHER
| EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
,
919 aesni_cbc_hmac_sha1_init_key
,
920 aesni_cbc_hmac_sha1_cipher
,
922 sizeof(EVP_AES_HMAC_SHA1
),
923 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_set_asn1_iv
,
924 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_get_asn1_iv
,
925 aesni_cbc_hmac_sha1_ctrl
,
929 static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher
= {
930 # ifdef NID_aes_256_cbc_hmac_sha1
931 NID_aes_256_cbc_hmac_sha1
,
935 AES_BLOCK_SIZE
, 32, AES_BLOCK_SIZE
,
936 EVP_CIPH_CBC_MODE
| EVP_CIPH_FLAG_DEFAULT_ASN1
|
937 EVP_CIPH_FLAG_AEAD_CIPHER
| EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
,
938 aesni_cbc_hmac_sha1_init_key
,
939 aesni_cbc_hmac_sha1_cipher
,
941 sizeof(EVP_AES_HMAC_SHA1
),
942 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_set_asn1_iv
,
943 EVP_CIPH_FLAG_DEFAULT_ASN1
? NULL
: EVP_CIPHER_get_asn1_iv
,
944 aesni_cbc_hmac_sha1_ctrl
,
948 const EVP_CIPHER
*EVP_aes_128_cbc_hmac_sha1(void)
950 return (OPENSSL_ia32cap_P
[1] & AESNI_CAPABLE
?
951 &aesni_128_cbc_hmac_sha1_cipher
: NULL
);
954 const EVP_CIPHER
*EVP_aes_256_cbc_hmac_sha1(void)
956 return (OPENSSL_ia32cap_P
[1] & AESNI_CAPABLE
?
957 &aesni_256_cbc_hmac_sha1_cipher
: NULL
);
960 const EVP_CIPHER
*EVP_aes_128_cbc_hmac_sha1(void)
965 const EVP_CIPHER
*EVP_aes_256_cbc_hmac_sha1(void)