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aa6bb135 RS |
1 | /* |
2 | * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved. | |
8a97a330 | 3 | * |
aa6bb135 RS |
4 | * Licensed under the OpenSSL license (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 | |
8a97a330 AP |
8 | */ |
9 | ||
10 | #include <openssl/opensslconf.h> | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <string.h> | |
14 | ||
0f113f3e | 15 | |
5158c763 MC |
16 | #include <openssl/evp.h> |
17 | #include <openssl/objects.h> | |
18 | #include <openssl/aes.h> | |
19 | #include <openssl/sha.h> | |
20 | #include <openssl/rand.h> | |
21 | #include "modes_lcl.h" | |
70428ead | 22 | #include "internal/constant_time_locl.h" |
5158c763 MC |
23 | #include "internal/evp_int.h" |
24 | ||
0f113f3e MC |
25 | typedef struct { |
26 | AES_KEY ks; | |
27 | SHA256_CTX head, tail, md; | |
28 | size_t payload_length; /* AAD length in decrypt case */ | |
8a97a330 | 29 | union { |
0f113f3e MC |
30 | unsigned int tls_ver; |
31 | unsigned char tls_aad[16]; /* 13 used */ | |
8a97a330 | 32 | } aux; |
0f113f3e | 33 | } EVP_AES_HMAC_SHA256; |
8a97a330 | 34 | |
0f113f3e | 35 | # define NO_PAYLOAD_LENGTH ((size_t)-1) |
8a97a330 | 36 | |
5158c763 | 37 | #if defined(AES_ASM) && ( \ |
0f113f3e | 38 | defined(__x86_64) || defined(__x86_64__) || \ |
b1a07c38 | 39 | defined(_M_AMD64) || defined(_M_X64) ) |
8a97a330 | 40 | |
f0fa5c83 | 41 | extern unsigned int OPENSSL_ia32cap_P[]; |
5158c763 | 42 | # define AESNI_CAPABLE (1<<(57-32)) |
8a97a330 AP |
43 | |
44 | int aesni_set_encrypt_key(const unsigned char *userKey, int bits, | |
0f113f3e | 45 | AES_KEY *key); |
8a97a330 | 46 | int aesni_set_decrypt_key(const unsigned char *userKey, int bits, |
0f113f3e | 47 | AES_KEY *key); |
8a97a330 AP |
48 | |
49 | void aesni_cbc_encrypt(const unsigned char *in, | |
0f113f3e MC |
50 | unsigned char *out, |
51 | size_t length, | |
52 | const AES_KEY *key, unsigned char *ivec, int enc); | |
8a97a330 | 53 | |
0f113f3e MC |
54 | int aesni_cbc_sha256_enc(const void *inp, void *out, size_t blocks, |
55 | const AES_KEY *key, unsigned char iv[16], | |
56 | SHA256_CTX *ctx, const void *in0); | |
8a97a330 | 57 | |
5158c763 | 58 | # define data(ctx) ((EVP_AES_HMAC_SHA256 *)EVP_CIPHER_CTX_get_cipher_data(ctx)) |
8a97a330 AP |
59 | |
60 | static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx, | |
0f113f3e MC |
61 | const unsigned char *inkey, |
62 | const unsigned char *iv, int enc) | |
63 | { | |
64 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
65 | int ret; | |
8a97a330 | 66 | |
0f113f3e | 67 | if (enc) |
b88e95f3 KC |
68 | ret = aesni_set_encrypt_key(inkey, |
69 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
70 | &key->ks); | |
0f113f3e | 71 | else |
936166af RL |
72 | ret = aesni_set_decrypt_key(inkey, |
73 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
74 | &key->ks); | |
8a97a330 | 75 | |
0f113f3e MC |
76 | SHA256_Init(&key->head); /* handy when benchmarking */ |
77 | key->tail = key->head; | |
78 | key->md = key->head; | |
8a97a330 | 79 | |
0f113f3e | 80 | key->payload_length = NO_PAYLOAD_LENGTH; |
8a97a330 | 81 | |
0f113f3e MC |
82 | return ret < 0 ? 0 : 1; |
83 | } | |
8a97a330 | 84 | |
5158c763 | 85 | # define STITCHED_CALL |
8a97a330 | 86 | |
5158c763 MC |
87 | # if !defined(STITCHED_CALL) |
88 | # define aes_off 0 | |
89 | # endif | |
8a97a330 | 90 | |
0f113f3e | 91 | void sha256_block_data_order(void *c, const void *p, size_t len); |
8a97a330 | 92 | |
0f113f3e MC |
93 | static void sha256_update(SHA256_CTX *c, const void *data, size_t len) |
94 | { | |
95 | const unsigned char *ptr = data; | |
96 | size_t res; | |
97 | ||
98 | if ((res = c->num)) { | |
99 | res = SHA256_CBLOCK - res; | |
100 | if (len < res) | |
101 | res = len; | |
102 | SHA256_Update(c, ptr, res); | |
103 | ptr += res; | |
104 | len -= res; | |
105 | } | |
106 | ||
107 | res = len % SHA256_CBLOCK; | |
108 | len -= res; | |
109 | ||
110 | if (len) { | |
111 | sha256_block_data_order(c, ptr, len / SHA256_CBLOCK); | |
112 | ||
113 | ptr += len; | |
114 | c->Nh += len >> 29; | |
115 | c->Nl += len <<= 3; | |
116 | if (c->Nl < (unsigned int)len) | |
117 | c->Nh++; | |
118 | } | |
119 | ||
120 | if (res) | |
121 | SHA256_Update(c, ptr, res); | |
8a97a330 AP |
122 | } |
123 | ||
5158c763 MC |
124 | # ifdef SHA256_Update |
125 | # undef SHA256_Update | |
126 | # endif | |
127 | # define SHA256_Update sha256_update | |
8a97a330 | 128 | |
9d6fcd42 | 129 | # if !defined(OPENSSL_NO_MULTIBLOCK) |
7f893258 | 130 | |
0f113f3e MC |
131 | typedef struct { |
132 | unsigned int A[8], B[8], C[8], D[8], E[8], F[8], G[8], H[8]; | |
133 | } SHA256_MB_CTX; | |
134 | typedef struct { | |
135 | const unsigned char *ptr; | |
136 | int blocks; | |
137 | } HASH_DESC; | |
7f893258 | 138 | |
0f113f3e | 139 | void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int); |
7f893258 | 140 | |
0f113f3e MC |
141 | typedef struct { |
142 | const unsigned char *inp; | |
143 | unsigned char *out; | |
144 | int blocks; | |
145 | u64 iv[2]; | |
146 | } CIPH_DESC; | |
7f893258 | 147 | |
0f113f3e | 148 | void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int); |
7f893258 | 149 | |
a69c0a1b | 150 | static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key, |
0f113f3e MC |
151 | unsigned char *out, |
152 | const unsigned char *inp, | |
153 | size_t inp_len, int n4x) | |
154 | { /* n4x is 1 or 2 */ | |
155 | HASH_DESC hash_d[8], edges[8]; | |
156 | CIPH_DESC ciph_d[8]; | |
157 | unsigned char storage[sizeof(SHA256_MB_CTX) + 32]; | |
158 | union { | |
159 | u64 q[16]; | |
160 | u32 d[32]; | |
161 | u8 c[128]; | |
162 | } blocks[8]; | |
163 | SHA256_MB_CTX *ctx; | |
164 | unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed = | |
165 | 0; | |
166 | size_t ret = 0; | |
167 | u8 *IVs; | |
5158c763 | 168 | # if defined(BSWAP8) |
0f113f3e | 169 | u64 seqnum; |
5158c763 | 170 | # endif |
0f113f3e MC |
171 | |
172 | /* ask for IVs in bulk */ | |
173 | if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0) | |
174 | return 0; | |
175 | ||
176 | /* align */ | |
177 | ctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); | |
178 | ||
179 | frag = (unsigned int)inp_len >> (1 + n4x); | |
180 | last = (unsigned int)inp_len + frag - (frag << (1 + n4x)); | |
181 | if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) { | |
182 | frag++; | |
183 | last -= x4 - 1; | |
184 | } | |
185 | ||
186 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
187 | ||
188 | /* populate descriptors with pointers and IVs */ | |
189 | hash_d[0].ptr = inp; | |
190 | ciph_d[0].inp = inp; | |
191 | /* 5+16 is place for header and explicit IV */ | |
192 | ciph_d[0].out = out + 5 + 16; | |
193 | memcpy(ciph_d[0].out - 16, IVs, 16); | |
194 | memcpy(ciph_d[0].iv, IVs, 16); | |
195 | IVs += 16; | |
196 | ||
197 | for (i = 1; i < x4; i++) { | |
198 | ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag; | |
199 | ciph_d[i].out = ciph_d[i - 1].out + packlen; | |
200 | memcpy(ciph_d[i].out - 16, IVs, 16); | |
201 | memcpy(ciph_d[i].iv, IVs, 16); | |
202 | IVs += 16; | |
203 | } | |
204 | ||
5158c763 | 205 | # if defined(BSWAP8) |
0f113f3e MC |
206 | memcpy(blocks[0].c, key->md.data, 8); |
207 | seqnum = BSWAP8(blocks[0].q[0]); | |
5158c763 | 208 | # endif |
0f113f3e MC |
209 | for (i = 0; i < x4; i++) { |
210 | unsigned int len = (i == (x4 - 1) ? last : frag); | |
5158c763 | 211 | # if !defined(BSWAP8) |
0f113f3e | 212 | unsigned int carry, j; |
5158c763 | 213 | # endif |
0f113f3e MC |
214 | |
215 | ctx->A[i] = key->md.h[0]; | |
216 | ctx->B[i] = key->md.h[1]; | |
217 | ctx->C[i] = key->md.h[2]; | |
218 | ctx->D[i] = key->md.h[3]; | |
219 | ctx->E[i] = key->md.h[4]; | |
220 | ctx->F[i] = key->md.h[5]; | |
221 | ctx->G[i] = key->md.h[6]; | |
222 | ctx->H[i] = key->md.h[7]; | |
223 | ||
224 | /* fix seqnum */ | |
5158c763 | 225 | # if defined(BSWAP8) |
0f113f3e | 226 | blocks[i].q[0] = BSWAP8(seqnum + i); |
5158c763 | 227 | # else |
0f113f3e MC |
228 | for (carry = i, j = 8; j--;) { |
229 | blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry; | |
230 | carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1); | |
231 | } | |
5158c763 | 232 | # endif |
0f113f3e MC |
233 | blocks[i].c[8] = ((u8 *)key->md.data)[8]; |
234 | blocks[i].c[9] = ((u8 *)key->md.data)[9]; | |
235 | blocks[i].c[10] = ((u8 *)key->md.data)[10]; | |
236 | /* fix length */ | |
237 | blocks[i].c[11] = (u8)(len >> 8); | |
238 | blocks[i].c[12] = (u8)(len); | |
239 | ||
240 | memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13); | |
241 | hash_d[i].ptr += 64 - 13; | |
242 | hash_d[i].blocks = (len - (64 - 13)) / 64; | |
243 | ||
244 | edges[i].ptr = blocks[i].c; | |
245 | edges[i].blocks = 1; | |
246 | } | |
247 | ||
248 | /* hash 13-byte headers and first 64-13 bytes of inputs */ | |
249 | sha256_multi_block(ctx, edges, n4x); | |
250 | /* hash bulk inputs */ | |
5158c763 MC |
251 | # define MAXCHUNKSIZE 2048 |
252 | # if MAXCHUNKSIZE%64 | |
253 | # error "MAXCHUNKSIZE is not divisible by 64" | |
254 | # elif MAXCHUNKSIZE | |
0f113f3e MC |
255 | /* |
256 | * goal is to minimize pressure on L1 cache by moving in shorter steps, | |
257 | * so that hashed data is still in the cache by the time we encrypt it | |
258 | */ | |
259 | minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64; | |
260 | if (minblocks > MAXCHUNKSIZE / 64) { | |
261 | for (i = 0; i < x4; i++) { | |
262 | edges[i].ptr = hash_d[i].ptr; | |
263 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
264 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
265 | } | |
266 | do { | |
267 | sha256_multi_block(ctx, edges, n4x); | |
268 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
269 | ||
270 | for (i = 0; i < x4; i++) { | |
271 | edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE; | |
272 | hash_d[i].blocks -= MAXCHUNKSIZE / 64; | |
273 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
274 | ciph_d[i].inp += MAXCHUNKSIZE; | |
275 | ciph_d[i].out += MAXCHUNKSIZE; | |
276 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
277 | memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16); | |
278 | } | |
279 | processed += MAXCHUNKSIZE; | |
280 | minblocks -= MAXCHUNKSIZE / 64; | |
281 | } while (minblocks > MAXCHUNKSIZE / 64); | |
282 | } | |
5158c763 MC |
283 | # endif |
284 | # undef MAXCHUNKSIZE | |
0f113f3e MC |
285 | sha256_multi_block(ctx, hash_d, n4x); |
286 | ||
287 | memset(blocks, 0, sizeof(blocks)); | |
288 | for (i = 0; i < x4; i++) { | |
289 | unsigned int len = (i == (x4 - 1) ? last : frag), | |
290 | off = hash_d[i].blocks * 64; | |
291 | const unsigned char *ptr = hash_d[i].ptr + off; | |
292 | ||
293 | off = (len - processed) - (64 - 13) - off; /* remainder actually */ | |
294 | memcpy(blocks[i].c, ptr, off); | |
295 | blocks[i].c[off] = 0x80; | |
296 | len += 64 + 13; /* 64 is HMAC header */ | |
297 | len *= 8; /* convert to bits */ | |
298 | if (off < (64 - 8)) { | |
5158c763 | 299 | # ifdef BSWAP4 |
0f113f3e | 300 | blocks[i].d[15] = BSWAP4(len); |
5158c763 | 301 | # else |
0f113f3e | 302 | PUTU32(blocks[i].c + 60, len); |
5158c763 | 303 | # endif |
0f113f3e MC |
304 | edges[i].blocks = 1; |
305 | } else { | |
5158c763 | 306 | # ifdef BSWAP4 |
0f113f3e | 307 | blocks[i].d[31] = BSWAP4(len); |
5158c763 | 308 | # else |
0f113f3e | 309 | PUTU32(blocks[i].c + 124, len); |
5158c763 | 310 | # endif |
0f113f3e MC |
311 | edges[i].blocks = 2; |
312 | } | |
313 | edges[i].ptr = blocks[i].c; | |
314 | } | |
315 | ||
316 | /* hash input tails and finalize */ | |
317 | sha256_multi_block(ctx, edges, n4x); | |
318 | ||
319 | memset(blocks, 0, sizeof(blocks)); | |
320 | for (i = 0; i < x4; i++) { | |
5158c763 | 321 | # ifdef BSWAP4 |
0f113f3e MC |
322 | blocks[i].d[0] = BSWAP4(ctx->A[i]); |
323 | ctx->A[i] = key->tail.h[0]; | |
324 | blocks[i].d[1] = BSWAP4(ctx->B[i]); | |
325 | ctx->B[i] = key->tail.h[1]; | |
326 | blocks[i].d[2] = BSWAP4(ctx->C[i]); | |
327 | ctx->C[i] = key->tail.h[2]; | |
328 | blocks[i].d[3] = BSWAP4(ctx->D[i]); | |
329 | ctx->D[i] = key->tail.h[3]; | |
330 | blocks[i].d[4] = BSWAP4(ctx->E[i]); | |
331 | ctx->E[i] = key->tail.h[4]; | |
332 | blocks[i].d[5] = BSWAP4(ctx->F[i]); | |
333 | ctx->F[i] = key->tail.h[5]; | |
334 | blocks[i].d[6] = BSWAP4(ctx->G[i]); | |
335 | ctx->G[i] = key->tail.h[6]; | |
336 | blocks[i].d[7] = BSWAP4(ctx->H[i]); | |
337 | ctx->H[i] = key->tail.h[7]; | |
338 | blocks[i].c[32] = 0x80; | |
339 | blocks[i].d[15] = BSWAP4((64 + 32) * 8); | |
5158c763 | 340 | # else |
0f113f3e MC |
341 | PUTU32(blocks[i].c + 0, ctx->A[i]); |
342 | ctx->A[i] = key->tail.h[0]; | |
343 | PUTU32(blocks[i].c + 4, ctx->B[i]); | |
344 | ctx->B[i] = key->tail.h[1]; | |
345 | PUTU32(blocks[i].c + 8, ctx->C[i]); | |
346 | ctx->C[i] = key->tail.h[2]; | |
347 | PUTU32(blocks[i].c + 12, ctx->D[i]); | |
348 | ctx->D[i] = key->tail.h[3]; | |
349 | PUTU32(blocks[i].c + 16, ctx->E[i]); | |
350 | ctx->E[i] = key->tail.h[4]; | |
351 | PUTU32(blocks[i].c + 20, ctx->F[i]); | |
352 | ctx->F[i] = key->tail.h[5]; | |
353 | PUTU32(blocks[i].c + 24, ctx->G[i]); | |
354 | ctx->G[i] = key->tail.h[6]; | |
355 | PUTU32(blocks[i].c + 28, ctx->H[i]); | |
356 | ctx->H[i] = key->tail.h[7]; | |
357 | blocks[i].c[32] = 0x80; | |
358 | PUTU32(blocks[i].c + 60, (64 + 32) * 8); | |
5158c763 | 359 | # endif |
0f113f3e MC |
360 | edges[i].ptr = blocks[i].c; |
361 | edges[i].blocks = 1; | |
362 | } | |
363 | ||
364 | /* finalize MACs */ | |
365 | sha256_multi_block(ctx, edges, n4x); | |
366 | ||
367 | for (i = 0; i < x4; i++) { | |
368 | unsigned int len = (i == (x4 - 1) ? last : frag), pad, j; | |
369 | unsigned char *out0 = out; | |
370 | ||
371 | memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed); | |
372 | ciph_d[i].inp = ciph_d[i].out; | |
373 | ||
374 | out += 5 + 16 + len; | |
375 | ||
376 | /* write MAC */ | |
377 | PUTU32(out + 0, ctx->A[i]); | |
378 | PUTU32(out + 4, ctx->B[i]); | |
379 | PUTU32(out + 8, ctx->C[i]); | |
380 | PUTU32(out + 12, ctx->D[i]); | |
381 | PUTU32(out + 16, ctx->E[i]); | |
382 | PUTU32(out + 20, ctx->F[i]); | |
383 | PUTU32(out + 24, ctx->G[i]); | |
384 | PUTU32(out + 28, ctx->H[i]); | |
385 | out += 32; | |
386 | len += 32; | |
387 | ||
388 | /* pad */ | |
389 | pad = 15 - len % 16; | |
390 | for (j = 0; j <= pad; j++) | |
391 | *(out++) = pad; | |
392 | len += pad + 1; | |
393 | ||
394 | ciph_d[i].blocks = (len - processed) / 16; | |
395 | len += 16; /* account for explicit iv */ | |
396 | ||
397 | /* arrange header */ | |
398 | out0[0] = ((u8 *)key->md.data)[8]; | |
399 | out0[1] = ((u8 *)key->md.data)[9]; | |
400 | out0[2] = ((u8 *)key->md.data)[10]; | |
401 | out0[3] = (u8)(len >> 8); | |
402 | out0[4] = (u8)(len); | |
403 | ||
404 | ret += len + 5; | |
405 | inp += frag; | |
406 | } | |
407 | ||
408 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
409 | ||
410 | OPENSSL_cleanse(blocks, sizeof(blocks)); | |
411 | OPENSSL_cleanse(ctx, sizeof(*ctx)); | |
412 | ||
413 | return ret; | |
7f893258 | 414 | } |
5158c763 | 415 | # endif |
7f893258 | 416 | |
0f113f3e MC |
417 | static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx, |
418 | unsigned char *out, | |
419 | const unsigned char *in, size_t len) | |
420 | { | |
421 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
422 | unsigned int l; | |
423 | size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and | |
424 | * later */ | |
425 | sha_off = 0; | |
5158c763 | 426 | # if defined(STITCHED_CALL) |
0f113f3e MC |
427 | size_t aes_off = 0, blocks; |
428 | ||
429 | sha_off = SHA256_CBLOCK - key->md.num; | |
5158c763 | 430 | # endif |
0f113f3e MC |
431 | |
432 | key->payload_length = NO_PAYLOAD_LENGTH; | |
433 | ||
434 | if (len % AES_BLOCK_SIZE) | |
435 | return 0; | |
436 | ||
936166af | 437 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
438 | if (plen == NO_PAYLOAD_LENGTH) |
439 | plen = len; | |
440 | else if (len != | |
441 | ((plen + SHA256_DIGEST_LENGTH + | |
442 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)) | |
443 | return 0; | |
444 | else if (key->aux.tls_ver >= TLS1_1_VERSION) | |
445 | iv = AES_BLOCK_SIZE; | |
446 | ||
5158c763 | 447 | # if defined(STITCHED_CALL) |
a5fd24d1 AP |
448 | /* |
449 | * Assembly stitch handles AVX-capable processors, but its | |
450 | * performance is not optimal on AMD Jaguar, ~40% worse, for | |
451 | * unknown reasons. Incidentally processor in question supports | |
452 | * AVX, but not AMD-specific XOP extension, which can be used | |
453 | * to identify it and avoid stitch invocation. So that after we | |
454 | * establish that current CPU supports AVX, we even see if it's | |
455 | * either even XOP-capable Bulldozer-based or GenuineIntel one. | |
d0f6eb1d | 456 | * But SHAEXT-capable go ahead... |
a5fd24d1 | 457 | */ |
d0f6eb1d AP |
458 | if (((OPENSSL_ia32cap_P[2] & (1 << 29)) || /* SHAEXT? */ |
459 | ((OPENSSL_ia32cap_P[1] & (1 << (60 - 32))) && /* AVX? */ | |
460 | ((OPENSSL_ia32cap_P[1] & (1 << (43 - 32))) /* XOP? */ | |
461 | | (OPENSSL_ia32cap_P[0] & (1 << 30))))) && /* "Intel CPU"? */ | |
0f113f3e MC |
462 | plen > (sha_off + iv) && |
463 | (blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) { | |
464 | SHA256_Update(&key->md, in + iv, sha_off); | |
465 | ||
466 | (void)aesni_cbc_sha256_enc(in, out, blocks, &key->ks, | |
936166af RL |
467 | EVP_CIPHER_CTX_iv_noconst(ctx), |
468 | &key->md, in + iv + sha_off); | |
0f113f3e MC |
469 | blocks *= SHA256_CBLOCK; |
470 | aes_off += blocks; | |
471 | sha_off += blocks; | |
472 | key->md.Nh += blocks >> 29; | |
473 | key->md.Nl += blocks <<= 3; | |
474 | if (key->md.Nl < (unsigned int)blocks) | |
475 | key->md.Nh++; | |
476 | } else { | |
477 | sha_off = 0; | |
478 | } | |
5158c763 | 479 | # endif |
0f113f3e MC |
480 | sha_off += iv; |
481 | SHA256_Update(&key->md, in + sha_off, plen - sha_off); | |
482 | ||
483 | if (plen != len) { /* "TLS" mode of operation */ | |
484 | if (in != out) | |
485 | memcpy(out + aes_off, in + aes_off, plen - aes_off); | |
486 | ||
487 | /* calculate HMAC and append it to payload */ | |
488 | SHA256_Final(out + plen, &key->md); | |
489 | key->md = key->tail; | |
490 | SHA256_Update(&key->md, out + plen, SHA256_DIGEST_LENGTH); | |
491 | SHA256_Final(out + plen, &key->md); | |
492 | ||
493 | /* pad the payload|hmac */ | |
494 | plen += SHA256_DIGEST_LENGTH; | |
495 | for (l = len - plen - 1; plen < len; plen++) | |
496 | out[plen] = l; | |
497 | /* encrypt HMAC|padding at once */ | |
498 | aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off, | |
936166af | 499 | &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1); |
0f113f3e MC |
500 | } else { |
501 | aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off, | |
936166af | 502 | &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1); |
0f113f3e MC |
503 | } |
504 | } else { | |
505 | union { | |
506 | unsigned int u[SHA256_DIGEST_LENGTH / sizeof(unsigned int)]; | |
507 | unsigned char c[64 + SHA256_DIGEST_LENGTH]; | |
508 | } mac, *pmac; | |
509 | ||
510 | /* arrange cache line alignment */ | |
511 | pmac = (void *)(((size_t)mac.c + 63) & ((size_t)0 - 64)); | |
512 | ||
513 | /* decrypt HMAC|padding at once */ | |
936166af RL |
514 | aesni_cbc_encrypt(in, out, len, &key->ks, |
515 | EVP_CIPHER_CTX_iv_noconst(ctx), 0); | |
0f113f3e MC |
516 | |
517 | if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ | |
518 | size_t inp_len, mask, j, i; | |
519 | unsigned int res, maxpad, pad, bitlen; | |
520 | int ret = 1; | |
521 | union { | |
522 | unsigned int u[SHA_LBLOCK]; | |
523 | unsigned char c[SHA256_CBLOCK]; | |
524 | } *data = (void *)key->md.data; | |
525 | ||
526 | if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3]) | |
527 | >= TLS1_1_VERSION) | |
528 | iv = AES_BLOCK_SIZE; | |
529 | ||
530 | if (len < (iv + SHA256_DIGEST_LENGTH + 1)) | |
531 | return 0; | |
532 | ||
533 | /* omit explicit iv */ | |
534 | out += iv; | |
535 | len -= iv; | |
536 | ||
537 | /* figure out payload length */ | |
538 | pad = out[len - 1]; | |
539 | maxpad = len - (SHA256_DIGEST_LENGTH + 1); | |
540 | maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8); | |
541 | maxpad &= 255; | |
542 | ||
335d0a46 MC |
543 | mask = constant_time_ge(maxpad, pad); |
544 | ret &= mask; | |
545 | /* | |
546 | * If pad is invalid then we will fail the above test but we must | |
547 | * continue anyway because we are in constant time code. However, | |
548 | * we'll use the maxpad value instead of the supplied pad to make | |
549 | * sure we perform well defined pointer arithmetic. | |
550 | */ | |
551 | pad = constant_time_select(mask, pad, maxpad); | |
70428ead | 552 | |
0f113f3e | 553 | inp_len = len - (SHA256_DIGEST_LENGTH + pad + 1); |
0f113f3e MC |
554 | |
555 | key->aux.tls_aad[plen - 2] = inp_len >> 8; | |
556 | key->aux.tls_aad[plen - 1] = inp_len; | |
557 | ||
558 | /* calculate HMAC */ | |
559 | key->md = key->head; | |
560 | SHA256_Update(&key->md, key->aux.tls_aad, plen); | |
561 | ||
5908555c | 562 | # if 1 /* see original reference version in #else */ |
0f113f3e MC |
563 | len -= SHA256_DIGEST_LENGTH; /* amend mac */ |
564 | if (len >= (256 + SHA256_CBLOCK)) { | |
565 | j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK); | |
566 | j += SHA256_CBLOCK - key->md.num; | |
567 | SHA256_Update(&key->md, out, j); | |
568 | out += j; | |
569 | len -= j; | |
570 | inp_len -= j; | |
571 | } | |
572 | ||
573 | /* but pretend as if we hashed padded payload */ | |
574 | bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */ | |
5158c763 | 575 | # ifdef BSWAP4 |
0f113f3e | 576 | bitlen = BSWAP4(bitlen); |
5158c763 | 577 | # else |
0f113f3e MC |
578 | mac.c[0] = 0; |
579 | mac.c[1] = (unsigned char)(bitlen >> 16); | |
580 | mac.c[2] = (unsigned char)(bitlen >> 8); | |
581 | mac.c[3] = (unsigned char)bitlen; | |
582 | bitlen = mac.u[0]; | |
5158c763 | 583 | # endif |
0f113f3e MC |
584 | |
585 | pmac->u[0] = 0; | |
586 | pmac->u[1] = 0; | |
587 | pmac->u[2] = 0; | |
588 | pmac->u[3] = 0; | |
589 | pmac->u[4] = 0; | |
590 | pmac->u[5] = 0; | |
591 | pmac->u[6] = 0; | |
592 | pmac->u[7] = 0; | |
593 | ||
594 | for (res = key->md.num, j = 0; j < len; j++) { | |
595 | size_t c = out[j]; | |
596 | mask = (j - inp_len) >> (sizeof(j) * 8 - 8); | |
597 | c &= mask; | |
598 | c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8)); | |
599 | data->c[res++] = (unsigned char)c; | |
600 | ||
601 | if (res != SHA256_CBLOCK) | |
602 | continue; | |
603 | ||
604 | /* j is not incremented yet */ | |
605 | mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1)); | |
606 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
607 | sha256_block_data_order(&key->md, data, 1); | |
608 | mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1)); | |
609 | pmac->u[0] |= key->md.h[0] & mask; | |
610 | pmac->u[1] |= key->md.h[1] & mask; | |
611 | pmac->u[2] |= key->md.h[2] & mask; | |
612 | pmac->u[3] |= key->md.h[3] & mask; | |
613 | pmac->u[4] |= key->md.h[4] & mask; | |
614 | pmac->u[5] |= key->md.h[5] & mask; | |
615 | pmac->u[6] |= key->md.h[6] & mask; | |
616 | pmac->u[7] |= key->md.h[7] & mask; | |
617 | res = 0; | |
618 | } | |
619 | ||
620 | for (i = res; i < SHA256_CBLOCK; i++, j++) | |
621 | data->c[i] = 0; | |
622 | ||
623 | if (res > SHA256_CBLOCK - 8) { | |
624 | mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1)); | |
625 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
626 | sha256_block_data_order(&key->md, data, 1); | |
627 | mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
628 | pmac->u[0] |= key->md.h[0] & mask; | |
629 | pmac->u[1] |= key->md.h[1] & mask; | |
630 | pmac->u[2] |= key->md.h[2] & mask; | |
631 | pmac->u[3] |= key->md.h[3] & mask; | |
632 | pmac->u[4] |= key->md.h[4] & mask; | |
633 | pmac->u[5] |= key->md.h[5] & mask; | |
634 | pmac->u[6] |= key->md.h[6] & mask; | |
635 | pmac->u[7] |= key->md.h[7] & mask; | |
636 | ||
637 | memset(data, 0, SHA256_CBLOCK); | |
638 | j += 64; | |
639 | } | |
640 | data->u[SHA_LBLOCK - 1] = bitlen; | |
641 | sha256_block_data_order(&key->md, data, 1); | |
642 | mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
643 | pmac->u[0] |= key->md.h[0] & mask; | |
644 | pmac->u[1] |= key->md.h[1] & mask; | |
645 | pmac->u[2] |= key->md.h[2] & mask; | |
646 | pmac->u[3] |= key->md.h[3] & mask; | |
647 | pmac->u[4] |= key->md.h[4] & mask; | |
648 | pmac->u[5] |= key->md.h[5] & mask; | |
649 | pmac->u[6] |= key->md.h[6] & mask; | |
650 | pmac->u[7] |= key->md.h[7] & mask; | |
651 | ||
5158c763 | 652 | # ifdef BSWAP4 |
0f113f3e MC |
653 | pmac->u[0] = BSWAP4(pmac->u[0]); |
654 | pmac->u[1] = BSWAP4(pmac->u[1]); | |
655 | pmac->u[2] = BSWAP4(pmac->u[2]); | |
656 | pmac->u[3] = BSWAP4(pmac->u[3]); | |
657 | pmac->u[4] = BSWAP4(pmac->u[4]); | |
658 | pmac->u[5] = BSWAP4(pmac->u[5]); | |
659 | pmac->u[6] = BSWAP4(pmac->u[6]); | |
660 | pmac->u[7] = BSWAP4(pmac->u[7]); | |
5158c763 | 661 | # else |
0f113f3e MC |
662 | for (i = 0; i < 8; i++) { |
663 | res = pmac->u[i]; | |
664 | pmac->c[4 * i + 0] = (unsigned char)(res >> 24); | |
665 | pmac->c[4 * i + 1] = (unsigned char)(res >> 16); | |
666 | pmac->c[4 * i + 2] = (unsigned char)(res >> 8); | |
667 | pmac->c[4 * i + 3] = (unsigned char)res; | |
668 | } | |
5158c763 | 669 | # endif |
0f113f3e | 670 | len += SHA256_DIGEST_LENGTH; |
5158c763 | 671 | # else |
0f113f3e MC |
672 | SHA256_Update(&key->md, out, inp_len); |
673 | res = key->md.num; | |
674 | SHA256_Final(pmac->c, &key->md); | |
675 | ||
676 | { | |
677 | unsigned int inp_blocks, pad_blocks; | |
678 | ||
679 | /* but pretend as if we hashed padded payload */ | |
680 | inp_blocks = | |
681 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
682 | res += (unsigned int)(len - inp_len); | |
683 | pad_blocks = res / SHA256_CBLOCK; | |
684 | res %= SHA256_CBLOCK; | |
685 | pad_blocks += | |
686 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
687 | for (; inp_blocks < pad_blocks; inp_blocks++) | |
688 | sha1_block_data_order(&key->md, data, 1); | |
689 | } | |
5908555c | 690 | # endif /* pre-lucky-13 reference version of above */ |
0f113f3e MC |
691 | key->md = key->tail; |
692 | SHA256_Update(&key->md, pmac->c, SHA256_DIGEST_LENGTH); | |
693 | SHA256_Final(pmac->c, &key->md); | |
694 | ||
695 | /* verify HMAC */ | |
696 | out += inp_len; | |
697 | len -= inp_len; | |
5908555c | 698 | # if 1 /* see original reference version in #else */ |
0f113f3e MC |
699 | { |
700 | unsigned char *p = | |
701 | out + len - 1 - maxpad - SHA256_DIGEST_LENGTH; | |
702 | size_t off = out - p; | |
703 | unsigned int c, cmask; | |
704 | ||
705 | maxpad += SHA256_DIGEST_LENGTH; | |
706 | for (res = 0, i = 0, j = 0; j < maxpad; j++) { | |
707 | c = p[j]; | |
708 | cmask = | |
709 | ((int)(j - off - SHA256_DIGEST_LENGTH)) >> | |
710 | (sizeof(int) * 8 - 1); | |
711 | res |= (c ^ pad) & ~cmask; /* ... and padding */ | |
712 | cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1); | |
713 | res |= (c ^ pmac->c[i]) & cmask; | |
714 | i += 1 & cmask; | |
715 | } | |
716 | maxpad -= SHA256_DIGEST_LENGTH; | |
717 | ||
718 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
719 | ret &= (int)~res; | |
720 | } | |
5908555c | 721 | # else /* pre-lucky-13 reference version of above */ |
0f113f3e MC |
722 | for (res = 0, i = 0; i < SHA256_DIGEST_LENGTH; i++) |
723 | res |= out[i] ^ pmac->c[i]; | |
724 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
725 | ret &= (int)~res; | |
726 | ||
727 | /* verify padding */ | |
728 | pad = (pad & ~res) | (maxpad & res); | |
729 | out = out + len - 1 - pad; | |
730 | for (res = 0, i = 0; i < pad; i++) | |
731 | res |= out[i] ^ pad; | |
732 | ||
733 | res = (0 - res) >> (sizeof(res) * 8 - 1); | |
734 | ret &= (int)~res; | |
5158c763 | 735 | # endif |
0f113f3e MC |
736 | return ret; |
737 | } else { | |
738 | SHA256_Update(&key->md, out, len); | |
739 | } | |
740 | } | |
741 | ||
742 | return 1; | |
743 | } | |
8a97a330 | 744 | |
0f113f3e MC |
745 | static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, |
746 | void *ptr) | |
747 | { | |
748 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
749 | unsigned int u_arg = (unsigned int)arg; | |
750 | ||
751 | switch (type) { | |
752 | case EVP_CTRL_AEAD_SET_MAC_KEY: | |
753 | { | |
754 | unsigned int i; | |
755 | unsigned char hmac_key[64]; | |
756 | ||
757 | memset(hmac_key, 0, sizeof(hmac_key)); | |
758 | ||
759 | if (arg < 0) | |
760 | return -1; | |
761 | ||
762 | if (u_arg > sizeof(hmac_key)) { | |
763 | SHA256_Init(&key->head); | |
764 | SHA256_Update(&key->head, ptr, arg); | |
765 | SHA256_Final(hmac_key, &key->head); | |
766 | } else { | |
767 | memcpy(hmac_key, ptr, arg); | |
768 | } | |
769 | ||
770 | for (i = 0; i < sizeof(hmac_key); i++) | |
771 | hmac_key[i] ^= 0x36; /* ipad */ | |
772 | SHA256_Init(&key->head); | |
773 | SHA256_Update(&key->head, hmac_key, sizeof(hmac_key)); | |
774 | ||
775 | for (i = 0; i < sizeof(hmac_key); i++) | |
776 | hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */ | |
777 | SHA256_Init(&key->tail); | |
778 | SHA256_Update(&key->tail, hmac_key, sizeof(hmac_key)); | |
779 | ||
780 | OPENSSL_cleanse(hmac_key, sizeof(hmac_key)); | |
781 | ||
782 | return 1; | |
783 | } | |
784 | case EVP_CTRL_AEAD_TLS1_AAD: | |
785 | { | |
786 | unsigned char *p = ptr; | |
1b6f5a4d | 787 | unsigned int len; |
0f113f3e | 788 | |
c8269881 MC |
789 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
790 | return -1; | |
791 | ||
1b6f5a4d BE |
792 | len = p[arg - 2] << 8 | p[arg - 1]; |
793 | ||
936166af | 794 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
795 | key->payload_length = len; |
796 | if ((key->aux.tls_ver = | |
797 | p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) { | |
a68d3505 RS |
798 | if (len < AES_BLOCK_SIZE) |
799 | return 0; | |
0f113f3e MC |
800 | len -= AES_BLOCK_SIZE; |
801 | p[arg - 2] = len >> 8; | |
802 | p[arg - 1] = len; | |
803 | } | |
804 | key->md = key->head; | |
805 | SHA256_Update(&key->md, p, arg); | |
806 | ||
807 | return (int)(((len + SHA256_DIGEST_LENGTH + | |
808 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE) | |
809 | - len); | |
810 | } else { | |
0f113f3e MC |
811 | memcpy(key->aux.tls_aad, ptr, arg); |
812 | key->payload_length = arg; | |
813 | ||
814 | return SHA256_DIGEST_LENGTH; | |
815 | } | |
816 | } | |
9d6fcd42 | 817 | # if !defined(OPENSSL_NO_MULTIBLOCK) |
0f113f3e MC |
818 | case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE: |
819 | return (int)(5 + 16 + ((arg + 32 + 16) & -16)); | |
820 | case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: | |
821 | { | |
822 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
823 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
824 | unsigned int n4x = 1, x4; | |
825 | unsigned int frag, last, packlen, inp_len; | |
826 | ||
827 | if (arg < 0) | |
828 | return -1; | |
829 | ||
830 | if (u_arg < sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) | |
831 | return -1; | |
832 | ||
833 | inp_len = param->inp[11] << 8 | param->inp[12]; | |
834 | ||
936166af | 835 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
836 | if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION) |
837 | return -1; | |
838 | ||
839 | if (inp_len) { | |
840 | if (inp_len < 4096) | |
841 | return 0; /* too short */ | |
842 | ||
843 | if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5)) | |
844 | n4x = 2; /* AVX2 */ | |
845 | } else if ((n4x = param->interleave / 4) && n4x <= 2) | |
846 | inp_len = param->len; | |
847 | else | |
848 | return -1; | |
849 | ||
850 | key->md = key->head; | |
851 | SHA256_Update(&key->md, param->inp, 13); | |
852 | ||
853 | x4 = 4 * n4x; | |
854 | n4x += 1; | |
855 | ||
856 | frag = inp_len >> n4x; | |
857 | last = inp_len + frag - (frag << n4x); | |
858 | if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) { | |
859 | frag++; | |
860 | last -= x4 - 1; | |
861 | } | |
862 | ||
863 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
864 | packlen = (packlen << n4x) - packlen; | |
865 | packlen += 5 + 16 + ((last + 32 + 16) & -16); | |
866 | ||
867 | param->interleave = x4; | |
868 | ||
869 | return (int)packlen; | |
870 | } else | |
871 | return -1; /* not yet */ | |
872 | } | |
873 | case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: | |
874 | { | |
875 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
876 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
877 | ||
878 | return (int)tls1_1_multi_block_encrypt(key, param->out, | |
879 | param->inp, param->len, | |
880 | param->interleave / 4); | |
881 | } | |
882 | case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT: | |
5158c763 | 883 | # endif |
0f113f3e MC |
884 | default: |
885 | return -1; | |
886 | } | |
887 | } | |
8a97a330 | 888 | |
0f113f3e | 889 | static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher = { |
5158c763 | 890 | # ifdef NID_aes_128_cbc_hmac_sha256 |
0f113f3e | 891 | NID_aes_128_cbc_hmac_sha256, |
5158c763 | 892 | # else |
0f113f3e | 893 | NID_undef, |
5158c763 | 894 | # endif |
936166af | 895 | AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE, |
0f113f3e MC |
896 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | |
897 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
898 | aesni_cbc_hmac_sha256_init_key, | |
899 | aesni_cbc_hmac_sha256_cipher, | |
900 | NULL, | |
901 | sizeof(EVP_AES_HMAC_SHA256), | |
902 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
903 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
904 | aesni_cbc_hmac_sha256_ctrl, | |
905 | NULL | |
906 | }; | |
907 | ||
908 | static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher = { | |
5158c763 | 909 | # ifdef NID_aes_256_cbc_hmac_sha256 |
0f113f3e | 910 | NID_aes_256_cbc_hmac_sha256, |
5158c763 | 911 | # else |
0f113f3e | 912 | NID_undef, |
5158c763 | 913 | # endif |
936166af | 914 | AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE, |
0f113f3e MC |
915 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | |
916 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
917 | aesni_cbc_hmac_sha256_init_key, | |
918 | aesni_cbc_hmac_sha256_cipher, | |
919 | NULL, | |
920 | sizeof(EVP_AES_HMAC_SHA256), | |
921 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
922 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
923 | aesni_cbc_hmac_sha256_ctrl, | |
924 | NULL | |
925 | }; | |
8a97a330 AP |
926 | |
927 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) | |
0f113f3e MC |
928 | { |
929 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
930 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
931 | &aesni_128_cbc_hmac_sha256_cipher : NULL); | |
932 | } | |
8a97a330 AP |
933 | |
934 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) | |
0f113f3e MC |
935 | { |
936 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
937 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
938 | &aesni_256_cbc_hmac_sha256_cipher : NULL); | |
939 | } | |
5158c763 | 940 | #else |
8a97a330 | 941 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) |
0f113f3e MC |
942 | { |
943 | return NULL; | |
944 | } | |
945 | ||
8a97a330 | 946 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) |
0f113f3e MC |
947 | { |
948 | return NULL; | |
949 | } | |
8a97a330 | 950 | #endif |