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8a97a330 AP |
1 | /* ==================================================================== |
2 | * Copyright (c) 2011-2013 The OpenSSL Project. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * | |
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 | |
14 | * distribution. | |
15 | * | |
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/)" | |
20 | * | |
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. | |
25 | * | |
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. | |
29 | * | |
30 | * 6. Redistributions of any form whatsoever must retain the following | |
31 | * acknowledgment: | |
32 | * "This product includes software developed by the OpenSSL Project | |
33 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
34 | * | |
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 | * ==================================================================== | |
48 | */ | |
49 | ||
50 | #include <openssl/opensslconf.h> | |
51 | ||
52 | #include <stdio.h> | |
53 | #include <string.h> | |
54 | ||
474e469b | 55 | #if !defined(OPENSSL_NO_AES) |
8a97a330 | 56 | |
0f113f3e MC |
57 | # include <openssl/evp.h> |
58 | # include <openssl/objects.h> | |
59 | # include <openssl/aes.h> | |
60 | # include <openssl/sha.h> | |
61 | # include <openssl/rand.h> | |
62 | # include "modes_lcl.h" | |
63 | ||
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 | |
68 | # endif | |
69 | ||
70 | # if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1) | |
71 | # define EVP_CIPH_FLAG_DEFAULT_ASN1 0 | |
72 | # endif | |
73 | ||
74 | # if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK) | |
75 | # define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0 | |
76 | # endif | |
77 | ||
78 | # define TLS1_1_VERSION 0x0302 | |
79 | ||
80 | typedef struct { | |
81 | AES_KEY ks; | |
82 | SHA256_CTX head, tail, md; | |
83 | size_t payload_length; /* AAD length in decrypt case */ | |
8a97a330 | 84 | union { |
0f113f3e MC |
85 | unsigned int tls_ver; |
86 | unsigned char tls_aad[16]; /* 13 used */ | |
8a97a330 | 87 | } aux; |
0f113f3e | 88 | } EVP_AES_HMAC_SHA256; |
8a97a330 | 89 | |
0f113f3e | 90 | # define NO_PAYLOAD_LENGTH ((size_t)-1) |
8a97a330 | 91 | |
0f113f3e MC |
92 | # if defined(AES_ASM) && ( \ |
93 | defined(__x86_64) || defined(__x86_64__) || \ | |
94 | defined(_M_AMD64) || defined(_M_X64) || \ | |
95 | defined(__INTEL__) ) | |
8a97a330 | 96 | |
f0fa5c83 | 97 | extern unsigned int OPENSSL_ia32cap_P[]; |
0f113f3e | 98 | # define AESNI_CAPABLE (1<<(57-32)) |
8a97a330 AP |
99 | |
100 | int aesni_set_encrypt_key(const unsigned char *userKey, int bits, | |
0f113f3e | 101 | AES_KEY *key); |
8a97a330 | 102 | int aesni_set_decrypt_key(const unsigned char *userKey, int bits, |
0f113f3e | 103 | AES_KEY *key); |
8a97a330 AP |
104 | |
105 | void aesni_cbc_encrypt(const unsigned char *in, | |
0f113f3e MC |
106 | unsigned char *out, |
107 | size_t length, | |
108 | const AES_KEY *key, unsigned char *ivec, int enc); | |
8a97a330 | 109 | |
0f113f3e MC |
110 | int aesni_cbc_sha256_enc(const void *inp, void *out, size_t blocks, |
111 | const AES_KEY *key, unsigned char iv[16], | |
112 | SHA256_CTX *ctx, const void *in0); | |
8a97a330 | 113 | |
0f113f3e | 114 | # define data(ctx) ((EVP_AES_HMAC_SHA256 *)(ctx)->cipher_data) |
8a97a330 AP |
115 | |
116 | static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx, | |
0f113f3e MC |
117 | const unsigned char *inkey, |
118 | const unsigned char *iv, int enc) | |
119 | { | |
120 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
121 | int ret; | |
8a97a330 | 122 | |
0f113f3e MC |
123 | if (enc) |
124 | memset(&key->ks, 0, sizeof(key->ks.rd_key)), | |
125 | ret = aesni_set_encrypt_key(inkey, ctx->key_len * 8, &key->ks); | |
126 | else | |
127 | ret = aesni_set_decrypt_key(inkey, ctx->key_len * 8, &key->ks); | |
8a97a330 | 128 | |
0f113f3e MC |
129 | SHA256_Init(&key->head); /* handy when benchmarking */ |
130 | key->tail = key->head; | |
131 | key->md = key->head; | |
8a97a330 | 132 | |
0f113f3e | 133 | key->payload_length = NO_PAYLOAD_LENGTH; |
8a97a330 | 134 | |
0f113f3e MC |
135 | return ret < 0 ? 0 : 1; |
136 | } | |
8a97a330 | 137 | |
0f113f3e | 138 | # define STITCHED_CALL |
8a97a330 | 139 | |
0f113f3e MC |
140 | # if !defined(STITCHED_CALL) |
141 | # define aes_off 0 | |
142 | # endif | |
8a97a330 | 143 | |
0f113f3e | 144 | void sha256_block_data_order(void *c, const void *p, size_t len); |
8a97a330 | 145 | |
0f113f3e MC |
146 | static void sha256_update(SHA256_CTX *c, const void *data, size_t len) |
147 | { | |
148 | const unsigned char *ptr = data; | |
149 | size_t res; | |
150 | ||
151 | if ((res = c->num)) { | |
152 | res = SHA256_CBLOCK - res; | |
153 | if (len < res) | |
154 | res = len; | |
155 | SHA256_Update(c, ptr, res); | |
156 | ptr += res; | |
157 | len -= res; | |
158 | } | |
159 | ||
160 | res = len % SHA256_CBLOCK; | |
161 | len -= res; | |
162 | ||
163 | if (len) { | |
164 | sha256_block_data_order(c, ptr, len / SHA256_CBLOCK); | |
165 | ||
166 | ptr += len; | |
167 | c->Nh += len >> 29; | |
168 | c->Nl += len <<= 3; | |
169 | if (c->Nl < (unsigned int)len) | |
170 | c->Nh++; | |
171 | } | |
172 | ||
173 | if (res) | |
174 | SHA256_Update(c, ptr, res); | |
8a97a330 AP |
175 | } |
176 | ||
0f113f3e MC |
177 | # ifdef SHA256_Update |
178 | # undef SHA256_Update | |
179 | # endif | |
180 | # define SHA256_Update sha256_update | |
8a97a330 | 181 | |
0f113f3e | 182 | # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK |
7f893258 | 183 | |
0f113f3e MC |
184 | typedef struct { |
185 | unsigned int A[8], B[8], C[8], D[8], E[8], F[8], G[8], H[8]; | |
186 | } SHA256_MB_CTX; | |
187 | typedef struct { | |
188 | const unsigned char *ptr; | |
189 | int blocks; | |
190 | } HASH_DESC; | |
7f893258 | 191 | |
0f113f3e | 192 | void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int); |
7f893258 | 193 | |
0f113f3e MC |
194 | typedef struct { |
195 | const unsigned char *inp; | |
196 | unsigned char *out; | |
197 | int blocks; | |
198 | u64 iv[2]; | |
199 | } CIPH_DESC; | |
7f893258 | 200 | |
0f113f3e | 201 | void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int); |
7f893258 | 202 | |
a69c0a1b | 203 | static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key, |
0f113f3e MC |
204 | unsigned char *out, |
205 | const unsigned char *inp, | |
206 | size_t inp_len, int n4x) | |
207 | { /* n4x is 1 or 2 */ | |
208 | HASH_DESC hash_d[8], edges[8]; | |
209 | CIPH_DESC ciph_d[8]; | |
210 | unsigned char storage[sizeof(SHA256_MB_CTX) + 32]; | |
211 | union { | |
212 | u64 q[16]; | |
213 | u32 d[32]; | |
214 | u8 c[128]; | |
215 | } blocks[8]; | |
216 | SHA256_MB_CTX *ctx; | |
217 | unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed = | |
218 | 0; | |
219 | size_t ret = 0; | |
220 | u8 *IVs; | |
221 | # if defined(BSWAP8) | |
222 | u64 seqnum; | |
223 | # endif | |
224 | ||
225 | /* ask for IVs in bulk */ | |
226 | if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0) | |
227 | return 0; | |
228 | ||
229 | /* align */ | |
230 | ctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); | |
231 | ||
232 | frag = (unsigned int)inp_len >> (1 + n4x); | |
233 | last = (unsigned int)inp_len + frag - (frag << (1 + n4x)); | |
234 | if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) { | |
235 | frag++; | |
236 | last -= x4 - 1; | |
237 | } | |
238 | ||
239 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
240 | ||
241 | /* populate descriptors with pointers and IVs */ | |
242 | hash_d[0].ptr = inp; | |
243 | ciph_d[0].inp = inp; | |
244 | /* 5+16 is place for header and explicit IV */ | |
245 | ciph_d[0].out = out + 5 + 16; | |
246 | memcpy(ciph_d[0].out - 16, IVs, 16); | |
247 | memcpy(ciph_d[0].iv, IVs, 16); | |
248 | IVs += 16; | |
249 | ||
250 | for (i = 1; i < x4; i++) { | |
251 | ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag; | |
252 | ciph_d[i].out = ciph_d[i - 1].out + packlen; | |
253 | memcpy(ciph_d[i].out - 16, IVs, 16); | |
254 | memcpy(ciph_d[i].iv, IVs, 16); | |
255 | IVs += 16; | |
256 | } | |
257 | ||
258 | # if defined(BSWAP8) | |
259 | memcpy(blocks[0].c, key->md.data, 8); | |
260 | seqnum = BSWAP8(blocks[0].q[0]); | |
261 | # endif | |
262 | for (i = 0; i < x4; i++) { | |
263 | unsigned int len = (i == (x4 - 1) ? last : frag); | |
264 | # if !defined(BSWAP8) | |
265 | unsigned int carry, j; | |
266 | # endif | |
267 | ||
268 | ctx->A[i] = key->md.h[0]; | |
269 | ctx->B[i] = key->md.h[1]; | |
270 | ctx->C[i] = key->md.h[2]; | |
271 | ctx->D[i] = key->md.h[3]; | |
272 | ctx->E[i] = key->md.h[4]; | |
273 | ctx->F[i] = key->md.h[5]; | |
274 | ctx->G[i] = key->md.h[6]; | |
275 | ctx->H[i] = key->md.h[7]; | |
276 | ||
277 | /* fix seqnum */ | |
278 | # if defined(BSWAP8) | |
279 | blocks[i].q[0] = BSWAP8(seqnum + i); | |
280 | # else | |
281 | for (carry = i, j = 8; j--;) { | |
282 | blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry; | |
283 | carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1); | |
284 | } | |
285 | # endif | |
286 | blocks[i].c[8] = ((u8 *)key->md.data)[8]; | |
287 | blocks[i].c[9] = ((u8 *)key->md.data)[9]; | |
288 | blocks[i].c[10] = ((u8 *)key->md.data)[10]; | |
289 | /* fix length */ | |
290 | blocks[i].c[11] = (u8)(len >> 8); | |
291 | blocks[i].c[12] = (u8)(len); | |
292 | ||
293 | memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13); | |
294 | hash_d[i].ptr += 64 - 13; | |
295 | hash_d[i].blocks = (len - (64 - 13)) / 64; | |
296 | ||
297 | edges[i].ptr = blocks[i].c; | |
298 | edges[i].blocks = 1; | |
299 | } | |
300 | ||
301 | /* hash 13-byte headers and first 64-13 bytes of inputs */ | |
302 | sha256_multi_block(ctx, edges, n4x); | |
303 | /* hash bulk inputs */ | |
304 | # define MAXCHUNKSIZE 2048 | |
305 | # if MAXCHUNKSIZE%64 | |
306 | # error "MAXCHUNKSIZE is not divisible by 64" | |
307 | # elif MAXCHUNKSIZE | |
308 | /* | |
309 | * goal is to minimize pressure on L1 cache by moving in shorter steps, | |
310 | * so that hashed data is still in the cache by the time we encrypt it | |
311 | */ | |
312 | minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64; | |
313 | if (minblocks > MAXCHUNKSIZE / 64) { | |
314 | for (i = 0; i < x4; i++) { | |
315 | edges[i].ptr = hash_d[i].ptr; | |
316 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
317 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
318 | } | |
319 | do { | |
320 | sha256_multi_block(ctx, edges, n4x); | |
321 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
322 | ||
323 | for (i = 0; i < x4; i++) { | |
324 | edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE; | |
325 | hash_d[i].blocks -= MAXCHUNKSIZE / 64; | |
326 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
327 | ciph_d[i].inp += MAXCHUNKSIZE; | |
328 | ciph_d[i].out += MAXCHUNKSIZE; | |
329 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
330 | memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16); | |
331 | } | |
332 | processed += MAXCHUNKSIZE; | |
333 | minblocks -= MAXCHUNKSIZE / 64; | |
334 | } while (minblocks > MAXCHUNKSIZE / 64); | |
335 | } | |
336 | # endif | |
337 | # undef MAXCHUNKSIZE | |
338 | sha256_multi_block(ctx, hash_d, n4x); | |
339 | ||
340 | memset(blocks, 0, sizeof(blocks)); | |
341 | for (i = 0; i < x4; i++) { | |
342 | unsigned int len = (i == (x4 - 1) ? last : frag), | |
343 | off = hash_d[i].blocks * 64; | |
344 | const unsigned char *ptr = hash_d[i].ptr + off; | |
345 | ||
346 | off = (len - processed) - (64 - 13) - off; /* remainder actually */ | |
347 | memcpy(blocks[i].c, ptr, off); | |
348 | blocks[i].c[off] = 0x80; | |
349 | len += 64 + 13; /* 64 is HMAC header */ | |
350 | len *= 8; /* convert to bits */ | |
351 | if (off < (64 - 8)) { | |
352 | # ifdef BSWAP4 | |
353 | blocks[i].d[15] = BSWAP4(len); | |
354 | # else | |
355 | PUTU32(blocks[i].c + 60, len); | |
356 | # endif | |
357 | edges[i].blocks = 1; | |
358 | } else { | |
359 | # ifdef BSWAP4 | |
360 | blocks[i].d[31] = BSWAP4(len); | |
361 | # else | |
362 | PUTU32(blocks[i].c + 124, len); | |
363 | # endif | |
364 | edges[i].blocks = 2; | |
365 | } | |
366 | edges[i].ptr = blocks[i].c; | |
367 | } | |
368 | ||
369 | /* hash input tails and finalize */ | |
370 | sha256_multi_block(ctx, edges, n4x); | |
371 | ||
372 | memset(blocks, 0, sizeof(blocks)); | |
373 | for (i = 0; i < x4; i++) { | |
374 | # ifdef BSWAP4 | |
375 | blocks[i].d[0] = BSWAP4(ctx->A[i]); | |
376 | ctx->A[i] = key->tail.h[0]; | |
377 | blocks[i].d[1] = BSWAP4(ctx->B[i]); | |
378 | ctx->B[i] = key->tail.h[1]; | |
379 | blocks[i].d[2] = BSWAP4(ctx->C[i]); | |
380 | ctx->C[i] = key->tail.h[2]; | |
381 | blocks[i].d[3] = BSWAP4(ctx->D[i]); | |
382 | ctx->D[i] = key->tail.h[3]; | |
383 | blocks[i].d[4] = BSWAP4(ctx->E[i]); | |
384 | ctx->E[i] = key->tail.h[4]; | |
385 | blocks[i].d[5] = BSWAP4(ctx->F[i]); | |
386 | ctx->F[i] = key->tail.h[5]; | |
387 | blocks[i].d[6] = BSWAP4(ctx->G[i]); | |
388 | ctx->G[i] = key->tail.h[6]; | |
389 | blocks[i].d[7] = BSWAP4(ctx->H[i]); | |
390 | ctx->H[i] = key->tail.h[7]; | |
391 | blocks[i].c[32] = 0x80; | |
392 | blocks[i].d[15] = BSWAP4((64 + 32) * 8); | |
393 | # else | |
394 | PUTU32(blocks[i].c + 0, ctx->A[i]); | |
395 | ctx->A[i] = key->tail.h[0]; | |
396 | PUTU32(blocks[i].c + 4, ctx->B[i]); | |
397 | ctx->B[i] = key->tail.h[1]; | |
398 | PUTU32(blocks[i].c + 8, ctx->C[i]); | |
399 | ctx->C[i] = key->tail.h[2]; | |
400 | PUTU32(blocks[i].c + 12, ctx->D[i]); | |
401 | ctx->D[i] = key->tail.h[3]; | |
402 | PUTU32(blocks[i].c + 16, ctx->E[i]); | |
403 | ctx->E[i] = key->tail.h[4]; | |
404 | PUTU32(blocks[i].c + 20, ctx->F[i]); | |
405 | ctx->F[i] = key->tail.h[5]; | |
406 | PUTU32(blocks[i].c + 24, ctx->G[i]); | |
407 | ctx->G[i] = key->tail.h[6]; | |
408 | PUTU32(blocks[i].c + 28, ctx->H[i]); | |
409 | ctx->H[i] = key->tail.h[7]; | |
410 | blocks[i].c[32] = 0x80; | |
411 | PUTU32(blocks[i].c + 60, (64 + 32) * 8); | |
412 | # endif | |
413 | edges[i].ptr = blocks[i].c; | |
414 | edges[i].blocks = 1; | |
415 | } | |
416 | ||
417 | /* finalize MACs */ | |
418 | sha256_multi_block(ctx, edges, n4x); | |
419 | ||
420 | for (i = 0; i < x4; i++) { | |
421 | unsigned int len = (i == (x4 - 1) ? last : frag), pad, j; | |
422 | unsigned char *out0 = out; | |
423 | ||
424 | memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed); | |
425 | ciph_d[i].inp = ciph_d[i].out; | |
426 | ||
427 | out += 5 + 16 + len; | |
428 | ||
429 | /* write MAC */ | |
430 | PUTU32(out + 0, ctx->A[i]); | |
431 | PUTU32(out + 4, ctx->B[i]); | |
432 | PUTU32(out + 8, ctx->C[i]); | |
433 | PUTU32(out + 12, ctx->D[i]); | |
434 | PUTU32(out + 16, ctx->E[i]); | |
435 | PUTU32(out + 20, ctx->F[i]); | |
436 | PUTU32(out + 24, ctx->G[i]); | |
437 | PUTU32(out + 28, ctx->H[i]); | |
438 | out += 32; | |
439 | len += 32; | |
440 | ||
441 | /* pad */ | |
442 | pad = 15 - len % 16; | |
443 | for (j = 0; j <= pad; j++) | |
444 | *(out++) = pad; | |
445 | len += pad + 1; | |
446 | ||
447 | ciph_d[i].blocks = (len - processed) / 16; | |
448 | len += 16; /* account for explicit iv */ | |
449 | ||
450 | /* arrange header */ | |
451 | out0[0] = ((u8 *)key->md.data)[8]; | |
452 | out0[1] = ((u8 *)key->md.data)[9]; | |
453 | out0[2] = ((u8 *)key->md.data)[10]; | |
454 | out0[3] = (u8)(len >> 8); | |
455 | out0[4] = (u8)(len); | |
456 | ||
457 | ret += len + 5; | |
458 | inp += frag; | |
459 | } | |
460 | ||
461 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
462 | ||
463 | OPENSSL_cleanse(blocks, sizeof(blocks)); | |
464 | OPENSSL_cleanse(ctx, sizeof(*ctx)); | |
465 | ||
466 | return ret; | |
7f893258 | 467 | } |
0f113f3e | 468 | # endif |
7f893258 | 469 | |
0f113f3e MC |
470 | static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx, |
471 | unsigned char *out, | |
472 | const unsigned char *in, size_t len) | |
473 | { | |
474 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
475 | unsigned int l; | |
476 | size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and | |
477 | * later */ | |
478 | sha_off = 0; | |
479 | # if defined(STITCHED_CALL) | |
480 | size_t aes_off = 0, blocks; | |
481 | ||
482 | sha_off = SHA256_CBLOCK - key->md.num; | |
483 | # endif | |
484 | ||
485 | key->payload_length = NO_PAYLOAD_LENGTH; | |
486 | ||
487 | if (len % AES_BLOCK_SIZE) | |
488 | return 0; | |
489 | ||
490 | if (ctx->encrypt) { | |
491 | if (plen == NO_PAYLOAD_LENGTH) | |
492 | plen = len; | |
493 | else if (len != | |
494 | ((plen + SHA256_DIGEST_LENGTH + | |
495 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)) | |
496 | return 0; | |
497 | else if (key->aux.tls_ver >= TLS1_1_VERSION) | |
498 | iv = AES_BLOCK_SIZE; | |
499 | ||
500 | # if defined(STITCHED_CALL) | |
501 | if (OPENSSL_ia32cap_P[1] & (1 << (60 - 32)) && /* AVX? */ | |
502 | plen > (sha_off + iv) && | |
503 | (blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) { | |
504 | SHA256_Update(&key->md, in + iv, sha_off); | |
505 | ||
506 | (void)aesni_cbc_sha256_enc(in, out, blocks, &key->ks, | |
507 | ctx->iv, &key->md, in + iv + sha_off); | |
508 | blocks *= SHA256_CBLOCK; | |
509 | aes_off += blocks; | |
510 | sha_off += blocks; | |
511 | key->md.Nh += blocks >> 29; | |
512 | key->md.Nl += blocks <<= 3; | |
513 | if (key->md.Nl < (unsigned int)blocks) | |
514 | key->md.Nh++; | |
515 | } else { | |
516 | sha_off = 0; | |
517 | } | |
518 | # endif | |
519 | sha_off += iv; | |
520 | SHA256_Update(&key->md, in + sha_off, plen - sha_off); | |
521 | ||
522 | if (plen != len) { /* "TLS" mode of operation */ | |
523 | if (in != out) | |
524 | memcpy(out + aes_off, in + aes_off, plen - aes_off); | |
525 | ||
526 | /* calculate HMAC and append it to payload */ | |
527 | SHA256_Final(out + plen, &key->md); | |
528 | key->md = key->tail; | |
529 | SHA256_Update(&key->md, out + plen, SHA256_DIGEST_LENGTH); | |
530 | SHA256_Final(out + plen, &key->md); | |
531 | ||
532 | /* pad the payload|hmac */ | |
533 | plen += SHA256_DIGEST_LENGTH; | |
534 | for (l = len - plen - 1; plen < len; plen++) | |
535 | out[plen] = l; | |
536 | /* encrypt HMAC|padding at once */ | |
537 | aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off, | |
538 | &key->ks, ctx->iv, 1); | |
539 | } else { | |
540 | aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off, | |
541 | &key->ks, ctx->iv, 1); | |
542 | } | |
543 | } else { | |
544 | union { | |
545 | unsigned int u[SHA256_DIGEST_LENGTH / sizeof(unsigned int)]; | |
546 | unsigned char c[64 + SHA256_DIGEST_LENGTH]; | |
547 | } mac, *pmac; | |
548 | ||
549 | /* arrange cache line alignment */ | |
550 | pmac = (void *)(((size_t)mac.c + 63) & ((size_t)0 - 64)); | |
551 | ||
552 | /* decrypt HMAC|padding at once */ | |
553 | aesni_cbc_encrypt(in, out, len, &key->ks, ctx->iv, 0); | |
554 | ||
555 | if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ | |
556 | size_t inp_len, mask, j, i; | |
557 | unsigned int res, maxpad, pad, bitlen; | |
558 | int ret = 1; | |
559 | union { | |
560 | unsigned int u[SHA_LBLOCK]; | |
561 | unsigned char c[SHA256_CBLOCK]; | |
562 | } *data = (void *)key->md.data; | |
563 | ||
564 | if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3]) | |
565 | >= TLS1_1_VERSION) | |
566 | iv = AES_BLOCK_SIZE; | |
567 | ||
568 | if (len < (iv + SHA256_DIGEST_LENGTH + 1)) | |
569 | return 0; | |
570 | ||
571 | /* omit explicit iv */ | |
572 | out += iv; | |
573 | len -= iv; | |
574 | ||
575 | /* figure out payload length */ | |
576 | pad = out[len - 1]; | |
577 | maxpad = len - (SHA256_DIGEST_LENGTH + 1); | |
578 | maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8); | |
579 | maxpad &= 255; | |
580 | ||
581 | inp_len = len - (SHA256_DIGEST_LENGTH + pad + 1); | |
582 | mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1))); | |
583 | inp_len &= mask; | |
584 | ret &= (int)mask; | |
585 | ||
586 | key->aux.tls_aad[plen - 2] = inp_len >> 8; | |
587 | key->aux.tls_aad[plen - 1] = inp_len; | |
588 | ||
589 | /* calculate HMAC */ | |
590 | key->md = key->head; | |
591 | SHA256_Update(&key->md, key->aux.tls_aad, plen); | |
592 | ||
593 | # if 1 | |
594 | len -= SHA256_DIGEST_LENGTH; /* amend mac */ | |
595 | if (len >= (256 + SHA256_CBLOCK)) { | |
596 | j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK); | |
597 | j += SHA256_CBLOCK - key->md.num; | |
598 | SHA256_Update(&key->md, out, j); | |
599 | out += j; | |
600 | len -= j; | |
601 | inp_len -= j; | |
602 | } | |
603 | ||
604 | /* but pretend as if we hashed padded payload */ | |
605 | bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */ | |
606 | # ifdef BSWAP4 | |
607 | bitlen = BSWAP4(bitlen); | |
608 | # else | |
609 | mac.c[0] = 0; | |
610 | mac.c[1] = (unsigned char)(bitlen >> 16); | |
611 | mac.c[2] = (unsigned char)(bitlen >> 8); | |
612 | mac.c[3] = (unsigned char)bitlen; | |
613 | bitlen = mac.u[0]; | |
614 | # endif | |
615 | ||
616 | pmac->u[0] = 0; | |
617 | pmac->u[1] = 0; | |
618 | pmac->u[2] = 0; | |
619 | pmac->u[3] = 0; | |
620 | pmac->u[4] = 0; | |
621 | pmac->u[5] = 0; | |
622 | pmac->u[6] = 0; | |
623 | pmac->u[7] = 0; | |
624 | ||
625 | for (res = key->md.num, j = 0; j < len; j++) { | |
626 | size_t c = out[j]; | |
627 | mask = (j - inp_len) >> (sizeof(j) * 8 - 8); | |
628 | c &= mask; | |
629 | c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8)); | |
630 | data->c[res++] = (unsigned char)c; | |
631 | ||
632 | if (res != SHA256_CBLOCK) | |
633 | continue; | |
634 | ||
635 | /* j is not incremented yet */ | |
636 | mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1)); | |
637 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
638 | sha256_block_data_order(&key->md, data, 1); | |
639 | mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1)); | |
640 | pmac->u[0] |= key->md.h[0] & mask; | |
641 | pmac->u[1] |= key->md.h[1] & mask; | |
642 | pmac->u[2] |= key->md.h[2] & mask; | |
643 | pmac->u[3] |= key->md.h[3] & mask; | |
644 | pmac->u[4] |= key->md.h[4] & mask; | |
645 | pmac->u[5] |= key->md.h[5] & mask; | |
646 | pmac->u[6] |= key->md.h[6] & mask; | |
647 | pmac->u[7] |= key->md.h[7] & mask; | |
648 | res = 0; | |
649 | } | |
650 | ||
651 | for (i = res; i < SHA256_CBLOCK; i++, j++) | |
652 | data->c[i] = 0; | |
653 | ||
654 | if (res > SHA256_CBLOCK - 8) { | |
655 | mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1)); | |
656 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
657 | sha256_block_data_order(&key->md, data, 1); | |
658 | mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
659 | pmac->u[0] |= key->md.h[0] & mask; | |
660 | pmac->u[1] |= key->md.h[1] & mask; | |
661 | pmac->u[2] |= key->md.h[2] & mask; | |
662 | pmac->u[3] |= key->md.h[3] & mask; | |
663 | pmac->u[4] |= key->md.h[4] & mask; | |
664 | pmac->u[5] |= key->md.h[5] & mask; | |
665 | pmac->u[6] |= key->md.h[6] & mask; | |
666 | pmac->u[7] |= key->md.h[7] & mask; | |
667 | ||
668 | memset(data, 0, SHA256_CBLOCK); | |
669 | j += 64; | |
670 | } | |
671 | data->u[SHA_LBLOCK - 1] = bitlen; | |
672 | sha256_block_data_order(&key->md, data, 1); | |
673 | mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
674 | pmac->u[0] |= key->md.h[0] & mask; | |
675 | pmac->u[1] |= key->md.h[1] & mask; | |
676 | pmac->u[2] |= key->md.h[2] & mask; | |
677 | pmac->u[3] |= key->md.h[3] & mask; | |
678 | pmac->u[4] |= key->md.h[4] & mask; | |
679 | pmac->u[5] |= key->md.h[5] & mask; | |
680 | pmac->u[6] |= key->md.h[6] & mask; | |
681 | pmac->u[7] |= key->md.h[7] & mask; | |
682 | ||
683 | # ifdef BSWAP4 | |
684 | pmac->u[0] = BSWAP4(pmac->u[0]); | |
685 | pmac->u[1] = BSWAP4(pmac->u[1]); | |
686 | pmac->u[2] = BSWAP4(pmac->u[2]); | |
687 | pmac->u[3] = BSWAP4(pmac->u[3]); | |
688 | pmac->u[4] = BSWAP4(pmac->u[4]); | |
689 | pmac->u[5] = BSWAP4(pmac->u[5]); | |
690 | pmac->u[6] = BSWAP4(pmac->u[6]); | |
691 | pmac->u[7] = BSWAP4(pmac->u[7]); | |
692 | # else | |
693 | for (i = 0; i < 8; i++) { | |
694 | res = pmac->u[i]; | |
695 | pmac->c[4 * i + 0] = (unsigned char)(res >> 24); | |
696 | pmac->c[4 * i + 1] = (unsigned char)(res >> 16); | |
697 | pmac->c[4 * i + 2] = (unsigned char)(res >> 8); | |
698 | pmac->c[4 * i + 3] = (unsigned char)res; | |
699 | } | |
700 | # endif | |
701 | len += SHA256_DIGEST_LENGTH; | |
702 | # else | |
703 | SHA256_Update(&key->md, out, inp_len); | |
704 | res = key->md.num; | |
705 | SHA256_Final(pmac->c, &key->md); | |
706 | ||
707 | { | |
708 | unsigned int inp_blocks, pad_blocks; | |
709 | ||
710 | /* but pretend as if we hashed padded payload */ | |
711 | inp_blocks = | |
712 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
713 | res += (unsigned int)(len - inp_len); | |
714 | pad_blocks = res / SHA256_CBLOCK; | |
715 | res %= SHA256_CBLOCK; | |
716 | pad_blocks += | |
717 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
718 | for (; inp_blocks < pad_blocks; inp_blocks++) | |
719 | sha1_block_data_order(&key->md, data, 1); | |
720 | } | |
721 | # endif | |
722 | key->md = key->tail; | |
723 | SHA256_Update(&key->md, pmac->c, SHA256_DIGEST_LENGTH); | |
724 | SHA256_Final(pmac->c, &key->md); | |
725 | ||
726 | /* verify HMAC */ | |
727 | out += inp_len; | |
728 | len -= inp_len; | |
729 | # if 1 | |
730 | { | |
731 | unsigned char *p = | |
732 | out + len - 1 - maxpad - SHA256_DIGEST_LENGTH; | |
733 | size_t off = out - p; | |
734 | unsigned int c, cmask; | |
735 | ||
736 | maxpad += SHA256_DIGEST_LENGTH; | |
737 | for (res = 0, i = 0, j = 0; j < maxpad; j++) { | |
738 | c = p[j]; | |
739 | cmask = | |
740 | ((int)(j - off - SHA256_DIGEST_LENGTH)) >> | |
741 | (sizeof(int) * 8 - 1); | |
742 | res |= (c ^ pad) & ~cmask; /* ... and padding */ | |
743 | cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1); | |
744 | res |= (c ^ pmac->c[i]) & cmask; | |
745 | i += 1 & cmask; | |
746 | } | |
747 | maxpad -= SHA256_DIGEST_LENGTH; | |
748 | ||
749 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
750 | ret &= (int)~res; | |
751 | } | |
752 | # else | |
753 | for (res = 0, i = 0; i < SHA256_DIGEST_LENGTH; i++) | |
754 | res |= out[i] ^ pmac->c[i]; | |
755 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
756 | ret &= (int)~res; | |
757 | ||
758 | /* verify padding */ | |
759 | pad = (pad & ~res) | (maxpad & res); | |
760 | out = out + len - 1 - pad; | |
761 | for (res = 0, i = 0; i < pad; i++) | |
762 | res |= out[i] ^ pad; | |
763 | ||
764 | res = (0 - res) >> (sizeof(res) * 8 - 1); | |
765 | ret &= (int)~res; | |
766 | # endif | |
767 | return ret; | |
768 | } else { | |
769 | SHA256_Update(&key->md, out, len); | |
770 | } | |
771 | } | |
772 | ||
773 | return 1; | |
774 | } | |
8a97a330 | 775 | |
0f113f3e MC |
776 | static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, |
777 | void *ptr) | |
778 | { | |
779 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
780 | unsigned int u_arg = (unsigned int)arg; | |
781 | ||
782 | switch (type) { | |
783 | case EVP_CTRL_AEAD_SET_MAC_KEY: | |
784 | { | |
785 | unsigned int i; | |
786 | unsigned char hmac_key[64]; | |
787 | ||
788 | memset(hmac_key, 0, sizeof(hmac_key)); | |
789 | ||
790 | if (arg < 0) | |
791 | return -1; | |
792 | ||
793 | if (u_arg > sizeof(hmac_key)) { | |
794 | SHA256_Init(&key->head); | |
795 | SHA256_Update(&key->head, ptr, arg); | |
796 | SHA256_Final(hmac_key, &key->head); | |
797 | } else { | |
798 | memcpy(hmac_key, ptr, arg); | |
799 | } | |
800 | ||
801 | for (i = 0; i < sizeof(hmac_key); i++) | |
802 | hmac_key[i] ^= 0x36; /* ipad */ | |
803 | SHA256_Init(&key->head); | |
804 | SHA256_Update(&key->head, hmac_key, sizeof(hmac_key)); | |
805 | ||
806 | for (i = 0; i < sizeof(hmac_key); i++) | |
807 | hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */ | |
808 | SHA256_Init(&key->tail); | |
809 | SHA256_Update(&key->tail, hmac_key, sizeof(hmac_key)); | |
810 | ||
811 | OPENSSL_cleanse(hmac_key, sizeof(hmac_key)); | |
812 | ||
813 | return 1; | |
814 | } | |
815 | case EVP_CTRL_AEAD_TLS1_AAD: | |
816 | { | |
817 | unsigned char *p = ptr; | |
818 | unsigned int len = p[arg - 2] << 8 | p[arg - 1]; | |
819 | ||
c8269881 MC |
820 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
821 | return -1; | |
822 | ||
0f113f3e MC |
823 | if (ctx->encrypt) { |
824 | key->payload_length = len; | |
825 | if ((key->aux.tls_ver = | |
826 | p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) { | |
827 | len -= AES_BLOCK_SIZE; | |
828 | p[arg - 2] = len >> 8; | |
829 | p[arg - 1] = len; | |
830 | } | |
831 | key->md = key->head; | |
832 | SHA256_Update(&key->md, p, arg); | |
833 | ||
834 | return (int)(((len + SHA256_DIGEST_LENGTH + | |
835 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE) | |
836 | - len); | |
837 | } else { | |
0f113f3e MC |
838 | memcpy(key->aux.tls_aad, ptr, arg); |
839 | key->payload_length = arg; | |
840 | ||
841 | return SHA256_DIGEST_LENGTH; | |
842 | } | |
843 | } | |
844 | # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK | |
845 | case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE: | |
846 | return (int)(5 + 16 + ((arg + 32 + 16) & -16)); | |
847 | case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: | |
848 | { | |
849 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
850 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
851 | unsigned int n4x = 1, x4; | |
852 | unsigned int frag, last, packlen, inp_len; | |
853 | ||
854 | if (arg < 0) | |
855 | return -1; | |
856 | ||
857 | if (u_arg < sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) | |
858 | return -1; | |
859 | ||
860 | inp_len = param->inp[11] << 8 | param->inp[12]; | |
861 | ||
862 | if (ctx->encrypt) { | |
863 | if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION) | |
864 | return -1; | |
865 | ||
866 | if (inp_len) { | |
867 | if (inp_len < 4096) | |
868 | return 0; /* too short */ | |
869 | ||
870 | if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5)) | |
871 | n4x = 2; /* AVX2 */ | |
872 | } else if ((n4x = param->interleave / 4) && n4x <= 2) | |
873 | inp_len = param->len; | |
874 | else | |
875 | return -1; | |
876 | ||
877 | key->md = key->head; | |
878 | SHA256_Update(&key->md, param->inp, 13); | |
879 | ||
880 | x4 = 4 * n4x; | |
881 | n4x += 1; | |
882 | ||
883 | frag = inp_len >> n4x; | |
884 | last = inp_len + frag - (frag << n4x); | |
885 | if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) { | |
886 | frag++; | |
887 | last -= x4 - 1; | |
888 | } | |
889 | ||
890 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
891 | packlen = (packlen << n4x) - packlen; | |
892 | packlen += 5 + 16 + ((last + 32 + 16) & -16); | |
893 | ||
894 | param->interleave = x4; | |
895 | ||
896 | return (int)packlen; | |
897 | } else | |
898 | return -1; /* not yet */ | |
899 | } | |
900 | case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: | |
901 | { | |
902 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
903 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
904 | ||
905 | return (int)tls1_1_multi_block_encrypt(key, param->out, | |
906 | param->inp, param->len, | |
907 | param->interleave / 4); | |
908 | } | |
909 | case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT: | |
910 | # endif | |
911 | default: | |
912 | return -1; | |
913 | } | |
914 | } | |
8a97a330 | 915 | |
0f113f3e MC |
916 | static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher = { |
917 | # ifdef NID_aes_128_cbc_hmac_sha256 | |
918 | NID_aes_128_cbc_hmac_sha256, | |
919 | # else | |
920 | NID_undef, | |
921 | # endif | |
922 | 16, 16, 16, | |
923 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | | |
924 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
925 | aesni_cbc_hmac_sha256_init_key, | |
926 | aesni_cbc_hmac_sha256_cipher, | |
927 | NULL, | |
928 | sizeof(EVP_AES_HMAC_SHA256), | |
929 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
930 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
931 | aesni_cbc_hmac_sha256_ctrl, | |
932 | NULL | |
933 | }; | |
934 | ||
935 | static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher = { | |
936 | # ifdef NID_aes_256_cbc_hmac_sha256 | |
937 | NID_aes_256_cbc_hmac_sha256, | |
938 | # else | |
939 | NID_undef, | |
940 | # endif | |
941 | 16, 32, 16, | |
942 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | | |
943 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
944 | aesni_cbc_hmac_sha256_init_key, | |
945 | aesni_cbc_hmac_sha256_cipher, | |
946 | NULL, | |
947 | sizeof(EVP_AES_HMAC_SHA256), | |
948 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
949 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
950 | aesni_cbc_hmac_sha256_ctrl, | |
951 | NULL | |
952 | }; | |
8a97a330 AP |
953 | |
954 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) | |
0f113f3e MC |
955 | { |
956 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
957 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
958 | &aesni_128_cbc_hmac_sha256_cipher : NULL); | |
959 | } | |
8a97a330 AP |
960 | |
961 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) | |
0f113f3e MC |
962 | { |
963 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
964 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
965 | &aesni_256_cbc_hmac_sha256_cipher : NULL); | |
966 | } | |
967 | # else | |
8a97a330 | 968 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) |
0f113f3e MC |
969 | { |
970 | return NULL; | |
971 | } | |
972 | ||
8a97a330 | 973 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) |
0f113f3e MC |
974 | { |
975 | return NULL; | |
976 | } | |
977 | # endif | |
8a97a330 | 978 | #endif |