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aa6bb135 RS |
1 | /* |
2 | * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved. | |
8a97a330 | 3 | * |
4a8b0c55 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
aa6bb135 RS |
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 | ||
8a97a330 AP |
10 | #include <stdio.h> |
11 | #include <string.h> | |
459b15d4 | 12 | #include <openssl/opensslconf.h> |
5158c763 MC |
13 | #include <openssl/evp.h> |
14 | #include <openssl/objects.h> | |
15 | #include <openssl/aes.h> | |
16 | #include <openssl/sha.h> | |
17 | #include <openssl/rand.h> | |
24fd8541 | 18 | #include "internal/cryptlib.h" |
25f2138b | 19 | #include "crypto/modes.h" |
706457b7 | 20 | #include "internal/constant_time.h" |
25f2138b | 21 | #include "crypto/evp.h" |
5158c763 | 22 | |
0f113f3e MC |
23 | typedef struct { |
24 | AES_KEY ks; | |
25 | SHA256_CTX head, tail, md; | |
26 | size_t payload_length; /* AAD length in decrypt case */ | |
8a97a330 | 27 | union { |
0f113f3e MC |
28 | unsigned int tls_ver; |
29 | unsigned char tls_aad[16]; /* 13 used */ | |
8a97a330 | 30 | } aux; |
0f113f3e | 31 | } EVP_AES_HMAC_SHA256; |
8a97a330 | 32 | |
0f113f3e | 33 | # define NO_PAYLOAD_LENGTH ((size_t)-1) |
8a97a330 | 34 | |
5158c763 | 35 | #if defined(AES_ASM) && ( \ |
0f113f3e | 36 | defined(__x86_64) || defined(__x86_64__) || \ |
b1a07c38 | 37 | defined(_M_AMD64) || defined(_M_X64) ) |
8a97a330 | 38 | |
5158c763 | 39 | # define AESNI_CAPABLE (1<<(57-32)) |
8a97a330 AP |
40 | |
41 | int aesni_set_encrypt_key(const unsigned char *userKey, int bits, | |
0f113f3e | 42 | AES_KEY *key); |
8a97a330 | 43 | int aesni_set_decrypt_key(const unsigned char *userKey, int bits, |
0f113f3e | 44 | AES_KEY *key); |
8a97a330 AP |
45 | |
46 | void aesni_cbc_encrypt(const unsigned char *in, | |
0f113f3e MC |
47 | unsigned char *out, |
48 | size_t length, | |
49 | const AES_KEY *key, unsigned char *ivec, int enc); | |
8a97a330 | 50 | |
0f113f3e MC |
51 | int aesni_cbc_sha256_enc(const void *inp, void *out, size_t blocks, |
52 | const AES_KEY *key, unsigned char iv[16], | |
53 | SHA256_CTX *ctx, const void *in0); | |
8a97a330 | 54 | |
5158c763 | 55 | # define data(ctx) ((EVP_AES_HMAC_SHA256 *)EVP_CIPHER_CTX_get_cipher_data(ctx)) |
8a97a330 AP |
56 | |
57 | static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx, | |
0f113f3e MC |
58 | const unsigned char *inkey, |
59 | const unsigned char *iv, int enc) | |
60 | { | |
61 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
62 | int ret; | |
8a97a330 | 63 | |
0f113f3e | 64 | if (enc) |
b88e95f3 KC |
65 | ret = aesni_set_encrypt_key(inkey, |
66 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
67 | &key->ks); | |
0f113f3e | 68 | else |
936166af RL |
69 | ret = aesni_set_decrypt_key(inkey, |
70 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
71 | &key->ks); | |
8a97a330 | 72 | |
0f113f3e MC |
73 | SHA256_Init(&key->head); /* handy when benchmarking */ |
74 | key->tail = key->head; | |
75 | key->md = key->head; | |
8a97a330 | 76 | |
0f113f3e | 77 | key->payload_length = NO_PAYLOAD_LENGTH; |
8a97a330 | 78 | |
0f113f3e MC |
79 | return ret < 0 ? 0 : 1; |
80 | } | |
8a97a330 | 81 | |
5158c763 | 82 | # define STITCHED_CALL |
8a97a330 | 83 | |
5158c763 MC |
84 | # if !defined(STITCHED_CALL) |
85 | # define aes_off 0 | |
86 | # endif | |
8a97a330 | 87 | |
0f113f3e | 88 | void sha256_block_data_order(void *c, const void *p, size_t len); |
8a97a330 | 89 | |
0f113f3e MC |
90 | static void sha256_update(SHA256_CTX *c, const void *data, size_t len) |
91 | { | |
92 | const unsigned char *ptr = data; | |
93 | size_t res; | |
94 | ||
95 | if ((res = c->num)) { | |
96 | res = SHA256_CBLOCK - res; | |
97 | if (len < res) | |
98 | res = len; | |
99 | SHA256_Update(c, ptr, res); | |
100 | ptr += res; | |
101 | len -= res; | |
102 | } | |
103 | ||
104 | res = len % SHA256_CBLOCK; | |
105 | len -= res; | |
106 | ||
107 | if (len) { | |
108 | sha256_block_data_order(c, ptr, len / SHA256_CBLOCK); | |
109 | ||
110 | ptr += len; | |
111 | c->Nh += len >> 29; | |
112 | c->Nl += len <<= 3; | |
113 | if (c->Nl < (unsigned int)len) | |
114 | c->Nh++; | |
115 | } | |
116 | ||
117 | if (res) | |
118 | SHA256_Update(c, ptr, res); | |
8a97a330 AP |
119 | } |
120 | ||
5158c763 MC |
121 | # ifdef SHA256_Update |
122 | # undef SHA256_Update | |
123 | # endif | |
124 | # define SHA256_Update sha256_update | |
8a97a330 | 125 | |
9d6fcd42 | 126 | # if !defined(OPENSSL_NO_MULTIBLOCK) |
7f893258 | 127 | |
0f113f3e MC |
128 | typedef struct { |
129 | unsigned int A[8], B[8], C[8], D[8], E[8], F[8], G[8], H[8]; | |
130 | } SHA256_MB_CTX; | |
131 | typedef struct { | |
132 | const unsigned char *ptr; | |
133 | int blocks; | |
134 | } HASH_DESC; | |
7f893258 | 135 | |
0f113f3e | 136 | void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int); |
7f893258 | 137 | |
0f113f3e MC |
138 | typedef struct { |
139 | const unsigned char *inp; | |
140 | unsigned char *out; | |
141 | int blocks; | |
142 | u64 iv[2]; | |
143 | } CIPH_DESC; | |
7f893258 | 144 | |
0f113f3e | 145 | void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int); |
7f893258 | 146 | |
a69c0a1b | 147 | static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key, |
0f113f3e MC |
148 | unsigned char *out, |
149 | const unsigned char *inp, | |
16cfc2c9 | 150 | size_t inp_len, int n4x) |
0f113f3e MC |
151 | { /* n4x is 1 or 2 */ |
152 | HASH_DESC hash_d[8], edges[8]; | |
153 | CIPH_DESC ciph_d[8]; | |
154 | unsigned char storage[sizeof(SHA256_MB_CTX) + 32]; | |
155 | union { | |
156 | u64 q[16]; | |
157 | u32 d[32]; | |
158 | u8 c[128]; | |
159 | } blocks[8]; | |
160 | SHA256_MB_CTX *ctx; | |
161 | unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed = | |
162 | 0; | |
163 | size_t ret = 0; | |
164 | u8 *IVs; | |
5158c763 | 165 | # if defined(BSWAP8) |
0f113f3e | 166 | u64 seqnum; |
5158c763 | 167 | # endif |
0f113f3e MC |
168 | |
169 | /* ask for IVs in bulk */ | |
16cfc2c9 | 170 | if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0) |
0f113f3e MC |
171 | return 0; |
172 | ||
173 | /* align */ | |
174 | ctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); | |
175 | ||
176 | frag = (unsigned int)inp_len >> (1 + n4x); | |
177 | last = (unsigned int)inp_len + frag - (frag << (1 + n4x)); | |
178 | if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) { | |
179 | frag++; | |
180 | last -= x4 - 1; | |
181 | } | |
182 | ||
183 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
184 | ||
185 | /* populate descriptors with pointers and IVs */ | |
186 | hash_d[0].ptr = inp; | |
187 | ciph_d[0].inp = inp; | |
188 | /* 5+16 is place for header and explicit IV */ | |
189 | ciph_d[0].out = out + 5 + 16; | |
190 | memcpy(ciph_d[0].out - 16, IVs, 16); | |
191 | memcpy(ciph_d[0].iv, IVs, 16); | |
192 | IVs += 16; | |
193 | ||
194 | for (i = 1; i < x4; i++) { | |
195 | ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag; | |
196 | ciph_d[i].out = ciph_d[i - 1].out + packlen; | |
197 | memcpy(ciph_d[i].out - 16, IVs, 16); | |
198 | memcpy(ciph_d[i].iv, IVs, 16); | |
199 | IVs += 16; | |
200 | } | |
201 | ||
5158c763 | 202 | # if defined(BSWAP8) |
0f113f3e MC |
203 | memcpy(blocks[0].c, key->md.data, 8); |
204 | seqnum = BSWAP8(blocks[0].q[0]); | |
5158c763 | 205 | # endif |
0f113f3e MC |
206 | for (i = 0; i < x4; i++) { |
207 | unsigned int len = (i == (x4 - 1) ? last : frag); | |
5158c763 | 208 | # if !defined(BSWAP8) |
0f113f3e | 209 | unsigned int carry, j; |
5158c763 | 210 | # endif |
0f113f3e MC |
211 | |
212 | ctx->A[i] = key->md.h[0]; | |
213 | ctx->B[i] = key->md.h[1]; | |
214 | ctx->C[i] = key->md.h[2]; | |
215 | ctx->D[i] = key->md.h[3]; | |
216 | ctx->E[i] = key->md.h[4]; | |
217 | ctx->F[i] = key->md.h[5]; | |
218 | ctx->G[i] = key->md.h[6]; | |
219 | ctx->H[i] = key->md.h[7]; | |
220 | ||
221 | /* fix seqnum */ | |
5158c763 | 222 | # if defined(BSWAP8) |
0f113f3e | 223 | blocks[i].q[0] = BSWAP8(seqnum + i); |
5158c763 | 224 | # else |
0f113f3e MC |
225 | for (carry = i, j = 8; j--;) { |
226 | blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry; | |
227 | carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1); | |
228 | } | |
5158c763 | 229 | # endif |
0f113f3e MC |
230 | blocks[i].c[8] = ((u8 *)key->md.data)[8]; |
231 | blocks[i].c[9] = ((u8 *)key->md.data)[9]; | |
232 | blocks[i].c[10] = ((u8 *)key->md.data)[10]; | |
233 | /* fix length */ | |
234 | blocks[i].c[11] = (u8)(len >> 8); | |
235 | blocks[i].c[12] = (u8)(len); | |
236 | ||
237 | memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13); | |
238 | hash_d[i].ptr += 64 - 13; | |
239 | hash_d[i].blocks = (len - (64 - 13)) / 64; | |
240 | ||
241 | edges[i].ptr = blocks[i].c; | |
242 | edges[i].blocks = 1; | |
243 | } | |
244 | ||
245 | /* hash 13-byte headers and first 64-13 bytes of inputs */ | |
246 | sha256_multi_block(ctx, edges, n4x); | |
247 | /* hash bulk inputs */ | |
5158c763 MC |
248 | # define MAXCHUNKSIZE 2048 |
249 | # if MAXCHUNKSIZE%64 | |
250 | # error "MAXCHUNKSIZE is not divisible by 64" | |
251 | # elif MAXCHUNKSIZE | |
0f113f3e MC |
252 | /* |
253 | * goal is to minimize pressure on L1 cache by moving in shorter steps, | |
254 | * so that hashed data is still in the cache by the time we encrypt it | |
255 | */ | |
256 | minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64; | |
257 | if (minblocks > MAXCHUNKSIZE / 64) { | |
258 | for (i = 0; i < x4; i++) { | |
259 | edges[i].ptr = hash_d[i].ptr; | |
260 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
261 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
262 | } | |
263 | do { | |
264 | sha256_multi_block(ctx, edges, n4x); | |
265 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
266 | ||
267 | for (i = 0; i < x4; i++) { | |
268 | edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE; | |
269 | hash_d[i].blocks -= MAXCHUNKSIZE / 64; | |
270 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
271 | ciph_d[i].inp += MAXCHUNKSIZE; | |
272 | ciph_d[i].out += MAXCHUNKSIZE; | |
273 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
274 | memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16); | |
275 | } | |
276 | processed += MAXCHUNKSIZE; | |
277 | minblocks -= MAXCHUNKSIZE / 64; | |
278 | } while (minblocks > MAXCHUNKSIZE / 64); | |
279 | } | |
5158c763 MC |
280 | # endif |
281 | # undef MAXCHUNKSIZE | |
0f113f3e MC |
282 | sha256_multi_block(ctx, hash_d, n4x); |
283 | ||
284 | memset(blocks, 0, sizeof(blocks)); | |
285 | for (i = 0; i < x4; i++) { | |
286 | unsigned int len = (i == (x4 - 1) ? last : frag), | |
287 | off = hash_d[i].blocks * 64; | |
288 | const unsigned char *ptr = hash_d[i].ptr + off; | |
289 | ||
290 | off = (len - processed) - (64 - 13) - off; /* remainder actually */ | |
291 | memcpy(blocks[i].c, ptr, off); | |
292 | blocks[i].c[off] = 0x80; | |
293 | len += 64 + 13; /* 64 is HMAC header */ | |
294 | len *= 8; /* convert to bits */ | |
295 | if (off < (64 - 8)) { | |
5158c763 | 296 | # ifdef BSWAP4 |
0f113f3e | 297 | blocks[i].d[15] = BSWAP4(len); |
5158c763 | 298 | # else |
0f113f3e | 299 | PUTU32(blocks[i].c + 60, len); |
5158c763 | 300 | # endif |
0f113f3e MC |
301 | edges[i].blocks = 1; |
302 | } else { | |
5158c763 | 303 | # ifdef BSWAP4 |
0f113f3e | 304 | blocks[i].d[31] = BSWAP4(len); |
5158c763 | 305 | # else |
0f113f3e | 306 | PUTU32(blocks[i].c + 124, len); |
5158c763 | 307 | # endif |
0f113f3e MC |
308 | edges[i].blocks = 2; |
309 | } | |
310 | edges[i].ptr = blocks[i].c; | |
311 | } | |
312 | ||
313 | /* hash input tails and finalize */ | |
314 | sha256_multi_block(ctx, edges, n4x); | |
315 | ||
316 | memset(blocks, 0, sizeof(blocks)); | |
317 | for (i = 0; i < x4; i++) { | |
5158c763 | 318 | # ifdef BSWAP4 |
0f113f3e MC |
319 | blocks[i].d[0] = BSWAP4(ctx->A[i]); |
320 | ctx->A[i] = key->tail.h[0]; | |
321 | blocks[i].d[1] = BSWAP4(ctx->B[i]); | |
322 | ctx->B[i] = key->tail.h[1]; | |
323 | blocks[i].d[2] = BSWAP4(ctx->C[i]); | |
324 | ctx->C[i] = key->tail.h[2]; | |
325 | blocks[i].d[3] = BSWAP4(ctx->D[i]); | |
326 | ctx->D[i] = key->tail.h[3]; | |
327 | blocks[i].d[4] = BSWAP4(ctx->E[i]); | |
328 | ctx->E[i] = key->tail.h[4]; | |
329 | blocks[i].d[5] = BSWAP4(ctx->F[i]); | |
330 | ctx->F[i] = key->tail.h[5]; | |
331 | blocks[i].d[6] = BSWAP4(ctx->G[i]); | |
332 | ctx->G[i] = key->tail.h[6]; | |
333 | blocks[i].d[7] = BSWAP4(ctx->H[i]); | |
334 | ctx->H[i] = key->tail.h[7]; | |
335 | blocks[i].c[32] = 0x80; | |
336 | blocks[i].d[15] = BSWAP4((64 + 32) * 8); | |
5158c763 | 337 | # else |
0f113f3e MC |
338 | PUTU32(blocks[i].c + 0, ctx->A[i]); |
339 | ctx->A[i] = key->tail.h[0]; | |
340 | PUTU32(blocks[i].c + 4, ctx->B[i]); | |
341 | ctx->B[i] = key->tail.h[1]; | |
342 | PUTU32(blocks[i].c + 8, ctx->C[i]); | |
343 | ctx->C[i] = key->tail.h[2]; | |
344 | PUTU32(blocks[i].c + 12, ctx->D[i]); | |
345 | ctx->D[i] = key->tail.h[3]; | |
346 | PUTU32(blocks[i].c + 16, ctx->E[i]); | |
347 | ctx->E[i] = key->tail.h[4]; | |
348 | PUTU32(blocks[i].c + 20, ctx->F[i]); | |
349 | ctx->F[i] = key->tail.h[5]; | |
350 | PUTU32(blocks[i].c + 24, ctx->G[i]); | |
351 | ctx->G[i] = key->tail.h[6]; | |
352 | PUTU32(blocks[i].c + 28, ctx->H[i]); | |
353 | ctx->H[i] = key->tail.h[7]; | |
354 | blocks[i].c[32] = 0x80; | |
355 | PUTU32(blocks[i].c + 60, (64 + 32) * 8); | |
5158c763 | 356 | # endif |
0f113f3e MC |
357 | edges[i].ptr = blocks[i].c; |
358 | edges[i].blocks = 1; | |
359 | } | |
360 | ||
361 | /* finalize MACs */ | |
362 | sha256_multi_block(ctx, edges, n4x); | |
363 | ||
364 | for (i = 0; i < x4; i++) { | |
365 | unsigned int len = (i == (x4 - 1) ? last : frag), pad, j; | |
366 | unsigned char *out0 = out; | |
367 | ||
368 | memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed); | |
369 | ciph_d[i].inp = ciph_d[i].out; | |
370 | ||
371 | out += 5 + 16 + len; | |
372 | ||
373 | /* write MAC */ | |
374 | PUTU32(out + 0, ctx->A[i]); | |
375 | PUTU32(out + 4, ctx->B[i]); | |
376 | PUTU32(out + 8, ctx->C[i]); | |
377 | PUTU32(out + 12, ctx->D[i]); | |
378 | PUTU32(out + 16, ctx->E[i]); | |
379 | PUTU32(out + 20, ctx->F[i]); | |
380 | PUTU32(out + 24, ctx->G[i]); | |
381 | PUTU32(out + 28, ctx->H[i]); | |
382 | out += 32; | |
383 | len += 32; | |
384 | ||
385 | /* pad */ | |
386 | pad = 15 - len % 16; | |
387 | for (j = 0; j <= pad; j++) | |
388 | *(out++) = pad; | |
389 | len += pad + 1; | |
390 | ||
391 | ciph_d[i].blocks = (len - processed) / 16; | |
392 | len += 16; /* account for explicit iv */ | |
393 | ||
394 | /* arrange header */ | |
395 | out0[0] = ((u8 *)key->md.data)[8]; | |
396 | out0[1] = ((u8 *)key->md.data)[9]; | |
397 | out0[2] = ((u8 *)key->md.data)[10]; | |
398 | out0[3] = (u8)(len >> 8); | |
399 | out0[4] = (u8)(len); | |
400 | ||
401 | ret += len + 5; | |
402 | inp += frag; | |
403 | } | |
404 | ||
405 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
406 | ||
407 | OPENSSL_cleanse(blocks, sizeof(blocks)); | |
408 | OPENSSL_cleanse(ctx, sizeof(*ctx)); | |
409 | ||
410 | return ret; | |
7f893258 | 411 | } |
5158c763 | 412 | # endif |
7f893258 | 413 | |
0f113f3e MC |
414 | static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx, |
415 | unsigned char *out, | |
416 | const unsigned char *in, size_t len) | |
417 | { | |
418 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
419 | unsigned int l; | |
420 | size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and | |
421 | * later */ | |
422 | sha_off = 0; | |
5158c763 | 423 | # if defined(STITCHED_CALL) |
0f113f3e MC |
424 | size_t aes_off = 0, blocks; |
425 | ||
426 | sha_off = SHA256_CBLOCK - key->md.num; | |
5158c763 | 427 | # endif |
0f113f3e MC |
428 | |
429 | key->payload_length = NO_PAYLOAD_LENGTH; | |
430 | ||
431 | if (len % AES_BLOCK_SIZE) | |
432 | return 0; | |
433 | ||
936166af | 434 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
435 | if (plen == NO_PAYLOAD_LENGTH) |
436 | plen = len; | |
437 | else if (len != | |
438 | ((plen + SHA256_DIGEST_LENGTH + | |
439 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)) | |
440 | return 0; | |
441 | else if (key->aux.tls_ver >= TLS1_1_VERSION) | |
442 | iv = AES_BLOCK_SIZE; | |
443 | ||
5158c763 | 444 | # if defined(STITCHED_CALL) |
a5fd24d1 AP |
445 | /* |
446 | * Assembly stitch handles AVX-capable processors, but its | |
447 | * performance is not optimal on AMD Jaguar, ~40% worse, for | |
448 | * unknown reasons. Incidentally processor in question supports | |
449 | * AVX, but not AMD-specific XOP extension, which can be used | |
450 | * to identify it and avoid stitch invocation. So that after we | |
451 | * establish that current CPU supports AVX, we even see if it's | |
452 | * either even XOP-capable Bulldozer-based or GenuineIntel one. | |
d0f6eb1d | 453 | * But SHAEXT-capable go ahead... |
a5fd24d1 | 454 | */ |
d0f6eb1d AP |
455 | if (((OPENSSL_ia32cap_P[2] & (1 << 29)) || /* SHAEXT? */ |
456 | ((OPENSSL_ia32cap_P[1] & (1 << (60 - 32))) && /* AVX? */ | |
457 | ((OPENSSL_ia32cap_P[1] & (1 << (43 - 32))) /* XOP? */ | |
458 | | (OPENSSL_ia32cap_P[0] & (1 << 30))))) && /* "Intel CPU"? */ | |
0f113f3e MC |
459 | plen > (sha_off + iv) && |
460 | (blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) { | |
461 | SHA256_Update(&key->md, in + iv, sha_off); | |
462 | ||
463 | (void)aesni_cbc_sha256_enc(in, out, blocks, &key->ks, | |
936166af RL |
464 | EVP_CIPHER_CTX_iv_noconst(ctx), |
465 | &key->md, in + iv + sha_off); | |
0f113f3e MC |
466 | blocks *= SHA256_CBLOCK; |
467 | aes_off += blocks; | |
468 | sha_off += blocks; | |
469 | key->md.Nh += blocks >> 29; | |
470 | key->md.Nl += blocks <<= 3; | |
471 | if (key->md.Nl < (unsigned int)blocks) | |
472 | key->md.Nh++; | |
473 | } else { | |
474 | sha_off = 0; | |
475 | } | |
5158c763 | 476 | # endif |
0f113f3e MC |
477 | sha_off += iv; |
478 | SHA256_Update(&key->md, in + sha_off, plen - sha_off); | |
479 | ||
480 | if (plen != len) { /* "TLS" mode of operation */ | |
481 | if (in != out) | |
482 | memcpy(out + aes_off, in + aes_off, plen - aes_off); | |
483 | ||
484 | /* calculate HMAC and append it to payload */ | |
485 | SHA256_Final(out + plen, &key->md); | |
486 | key->md = key->tail; | |
487 | SHA256_Update(&key->md, out + plen, SHA256_DIGEST_LENGTH); | |
488 | SHA256_Final(out + plen, &key->md); | |
489 | ||
490 | /* pad the payload|hmac */ | |
491 | plen += SHA256_DIGEST_LENGTH; | |
492 | for (l = len - plen - 1; plen < len; plen++) | |
493 | out[plen] = l; | |
494 | /* encrypt HMAC|padding at once */ | |
495 | aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off, | |
936166af | 496 | &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1); |
0f113f3e MC |
497 | } else { |
498 | aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off, | |
936166af | 499 | &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1); |
0f113f3e MC |
500 | } |
501 | } else { | |
502 | union { | |
503 | unsigned int u[SHA256_DIGEST_LENGTH / sizeof(unsigned int)]; | |
504 | unsigned char c[64 + SHA256_DIGEST_LENGTH]; | |
505 | } mac, *pmac; | |
506 | ||
507 | /* arrange cache line alignment */ | |
508 | pmac = (void *)(((size_t)mac.c + 63) & ((size_t)0 - 64)); | |
509 | ||
510 | /* decrypt HMAC|padding at once */ | |
936166af RL |
511 | aesni_cbc_encrypt(in, out, len, &key->ks, |
512 | EVP_CIPHER_CTX_iv_noconst(ctx), 0); | |
0f113f3e MC |
513 | |
514 | if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ | |
515 | size_t inp_len, mask, j, i; | |
516 | unsigned int res, maxpad, pad, bitlen; | |
517 | int ret = 1; | |
518 | union { | |
519 | unsigned int u[SHA_LBLOCK]; | |
520 | unsigned char c[SHA256_CBLOCK]; | |
521 | } *data = (void *)key->md.data; | |
522 | ||
523 | if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3]) | |
524 | >= TLS1_1_VERSION) | |
525 | iv = AES_BLOCK_SIZE; | |
526 | ||
527 | if (len < (iv + SHA256_DIGEST_LENGTH + 1)) | |
528 | return 0; | |
529 | ||
530 | /* omit explicit iv */ | |
531 | out += iv; | |
532 | len -= iv; | |
533 | ||
534 | /* figure out payload length */ | |
535 | pad = out[len - 1]; | |
536 | maxpad = len - (SHA256_DIGEST_LENGTH + 1); | |
537 | maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8); | |
538 | maxpad &= 255; | |
539 | ||
335d0a46 MC |
540 | mask = constant_time_ge(maxpad, pad); |
541 | ret &= mask; | |
542 | /* | |
543 | * If pad is invalid then we will fail the above test but we must | |
544 | * continue anyway because we are in constant time code. However, | |
545 | * we'll use the maxpad value instead of the supplied pad to make | |
546 | * sure we perform well defined pointer arithmetic. | |
547 | */ | |
548 | pad = constant_time_select(mask, pad, maxpad); | |
70428ead | 549 | |
0f113f3e | 550 | inp_len = len - (SHA256_DIGEST_LENGTH + pad + 1); |
0f113f3e MC |
551 | |
552 | key->aux.tls_aad[plen - 2] = inp_len >> 8; | |
553 | key->aux.tls_aad[plen - 1] = inp_len; | |
554 | ||
555 | /* calculate HMAC */ | |
556 | key->md = key->head; | |
557 | SHA256_Update(&key->md, key->aux.tls_aad, plen); | |
558 | ||
5908555c | 559 | # if 1 /* see original reference version in #else */ |
0f113f3e MC |
560 | len -= SHA256_DIGEST_LENGTH; /* amend mac */ |
561 | if (len >= (256 + SHA256_CBLOCK)) { | |
562 | j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK); | |
563 | j += SHA256_CBLOCK - key->md.num; | |
564 | SHA256_Update(&key->md, out, j); | |
565 | out += j; | |
566 | len -= j; | |
567 | inp_len -= j; | |
568 | } | |
569 | ||
570 | /* but pretend as if we hashed padded payload */ | |
571 | bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */ | |
5158c763 | 572 | # ifdef BSWAP4 |
0f113f3e | 573 | bitlen = BSWAP4(bitlen); |
5158c763 | 574 | # else |
0f113f3e MC |
575 | mac.c[0] = 0; |
576 | mac.c[1] = (unsigned char)(bitlen >> 16); | |
577 | mac.c[2] = (unsigned char)(bitlen >> 8); | |
578 | mac.c[3] = (unsigned char)bitlen; | |
579 | bitlen = mac.u[0]; | |
5158c763 | 580 | # endif |
0f113f3e MC |
581 | |
582 | pmac->u[0] = 0; | |
583 | pmac->u[1] = 0; | |
584 | pmac->u[2] = 0; | |
585 | pmac->u[3] = 0; | |
586 | pmac->u[4] = 0; | |
587 | pmac->u[5] = 0; | |
588 | pmac->u[6] = 0; | |
589 | pmac->u[7] = 0; | |
590 | ||
591 | for (res = key->md.num, j = 0; j < len; j++) { | |
592 | size_t c = out[j]; | |
593 | mask = (j - inp_len) >> (sizeof(j) * 8 - 8); | |
594 | c &= mask; | |
595 | c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8)); | |
596 | data->c[res++] = (unsigned char)c; | |
597 | ||
598 | if (res != SHA256_CBLOCK) | |
599 | continue; | |
600 | ||
601 | /* j is not incremented yet */ | |
602 | mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1)); | |
603 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
604 | sha256_block_data_order(&key->md, data, 1); | |
605 | mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1)); | |
606 | pmac->u[0] |= key->md.h[0] & mask; | |
607 | pmac->u[1] |= key->md.h[1] & mask; | |
608 | pmac->u[2] |= key->md.h[2] & mask; | |
609 | pmac->u[3] |= key->md.h[3] & mask; | |
610 | pmac->u[4] |= key->md.h[4] & mask; | |
611 | pmac->u[5] |= key->md.h[5] & mask; | |
612 | pmac->u[6] |= key->md.h[6] & mask; | |
613 | pmac->u[7] |= key->md.h[7] & mask; | |
614 | res = 0; | |
615 | } | |
616 | ||
617 | for (i = res; i < SHA256_CBLOCK; i++, j++) | |
618 | data->c[i] = 0; | |
619 | ||
620 | if (res > SHA256_CBLOCK - 8) { | |
621 | mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1)); | |
622 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
623 | sha256_block_data_order(&key->md, data, 1); | |
624 | mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
625 | pmac->u[0] |= key->md.h[0] & mask; | |
626 | pmac->u[1] |= key->md.h[1] & mask; | |
627 | pmac->u[2] |= key->md.h[2] & mask; | |
628 | pmac->u[3] |= key->md.h[3] & mask; | |
629 | pmac->u[4] |= key->md.h[4] & mask; | |
630 | pmac->u[5] |= key->md.h[5] & mask; | |
631 | pmac->u[6] |= key->md.h[6] & mask; | |
632 | pmac->u[7] |= key->md.h[7] & mask; | |
633 | ||
634 | memset(data, 0, SHA256_CBLOCK); | |
635 | j += 64; | |
636 | } | |
637 | data->u[SHA_LBLOCK - 1] = bitlen; | |
638 | sha256_block_data_order(&key->md, data, 1); | |
639 | mask = 0 - ((j - inp_len - 73) >> (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 | ||
5158c763 | 649 | # ifdef BSWAP4 |
0f113f3e MC |
650 | pmac->u[0] = BSWAP4(pmac->u[0]); |
651 | pmac->u[1] = BSWAP4(pmac->u[1]); | |
652 | pmac->u[2] = BSWAP4(pmac->u[2]); | |
653 | pmac->u[3] = BSWAP4(pmac->u[3]); | |
654 | pmac->u[4] = BSWAP4(pmac->u[4]); | |
655 | pmac->u[5] = BSWAP4(pmac->u[5]); | |
656 | pmac->u[6] = BSWAP4(pmac->u[6]); | |
657 | pmac->u[7] = BSWAP4(pmac->u[7]); | |
5158c763 | 658 | # else |
0f113f3e MC |
659 | for (i = 0; i < 8; i++) { |
660 | res = pmac->u[i]; | |
661 | pmac->c[4 * i + 0] = (unsigned char)(res >> 24); | |
662 | pmac->c[4 * i + 1] = (unsigned char)(res >> 16); | |
663 | pmac->c[4 * i + 2] = (unsigned char)(res >> 8); | |
664 | pmac->c[4 * i + 3] = (unsigned char)res; | |
665 | } | |
5158c763 | 666 | # endif |
0f113f3e | 667 | len += SHA256_DIGEST_LENGTH; |
5158c763 | 668 | # else |
0f113f3e MC |
669 | SHA256_Update(&key->md, out, inp_len); |
670 | res = key->md.num; | |
671 | SHA256_Final(pmac->c, &key->md); | |
672 | ||
673 | { | |
674 | unsigned int inp_blocks, pad_blocks; | |
675 | ||
676 | /* but pretend as if we hashed padded payload */ | |
677 | inp_blocks = | |
678 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
679 | res += (unsigned int)(len - inp_len); | |
680 | pad_blocks = res / SHA256_CBLOCK; | |
681 | res %= SHA256_CBLOCK; | |
682 | pad_blocks += | |
683 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
684 | for (; inp_blocks < pad_blocks; inp_blocks++) | |
685 | sha1_block_data_order(&key->md, data, 1); | |
686 | } | |
5908555c | 687 | # endif /* pre-lucky-13 reference version of above */ |
0f113f3e MC |
688 | key->md = key->tail; |
689 | SHA256_Update(&key->md, pmac->c, SHA256_DIGEST_LENGTH); | |
690 | SHA256_Final(pmac->c, &key->md); | |
691 | ||
692 | /* verify HMAC */ | |
693 | out += inp_len; | |
694 | len -= inp_len; | |
5908555c | 695 | # if 1 /* see original reference version in #else */ |
0f113f3e MC |
696 | { |
697 | unsigned char *p = | |
698 | out + len - 1 - maxpad - SHA256_DIGEST_LENGTH; | |
699 | size_t off = out - p; | |
700 | unsigned int c, cmask; | |
701 | ||
702 | maxpad += SHA256_DIGEST_LENGTH; | |
703 | for (res = 0, i = 0, j = 0; j < maxpad; j++) { | |
704 | c = p[j]; | |
705 | cmask = | |
706 | ((int)(j - off - SHA256_DIGEST_LENGTH)) >> | |
707 | (sizeof(int) * 8 - 1); | |
708 | res |= (c ^ pad) & ~cmask; /* ... and padding */ | |
709 | cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1); | |
710 | res |= (c ^ pmac->c[i]) & cmask; | |
711 | i += 1 & cmask; | |
712 | } | |
713 | maxpad -= SHA256_DIGEST_LENGTH; | |
714 | ||
715 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
716 | ret &= (int)~res; | |
717 | } | |
5908555c | 718 | # else /* pre-lucky-13 reference version of above */ |
0f113f3e MC |
719 | for (res = 0, i = 0; i < SHA256_DIGEST_LENGTH; i++) |
720 | res |= out[i] ^ pmac->c[i]; | |
721 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
722 | ret &= (int)~res; | |
723 | ||
724 | /* verify padding */ | |
725 | pad = (pad & ~res) | (maxpad & res); | |
726 | out = out + len - 1 - pad; | |
727 | for (res = 0, i = 0; i < pad; i++) | |
728 | res |= out[i] ^ pad; | |
729 | ||
730 | res = (0 - res) >> (sizeof(res) * 8 - 1); | |
731 | ret &= (int)~res; | |
5158c763 | 732 | # endif |
0f113f3e MC |
733 | return ret; |
734 | } else { | |
735 | SHA256_Update(&key->md, out, len); | |
736 | } | |
737 | } | |
738 | ||
739 | return 1; | |
740 | } | |
8a97a330 | 741 | |
0f113f3e MC |
742 | static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, |
743 | void *ptr) | |
744 | { | |
745 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
746 | unsigned int u_arg = (unsigned int)arg; | |
747 | ||
748 | switch (type) { | |
749 | case EVP_CTRL_AEAD_SET_MAC_KEY: | |
750 | { | |
751 | unsigned int i; | |
752 | unsigned char hmac_key[64]; | |
753 | ||
754 | memset(hmac_key, 0, sizeof(hmac_key)); | |
755 | ||
756 | if (arg < 0) | |
757 | return -1; | |
758 | ||
759 | if (u_arg > sizeof(hmac_key)) { | |
760 | SHA256_Init(&key->head); | |
761 | SHA256_Update(&key->head, ptr, arg); | |
762 | SHA256_Final(hmac_key, &key->head); | |
763 | } else { | |
764 | memcpy(hmac_key, ptr, arg); | |
765 | } | |
766 | ||
767 | for (i = 0; i < sizeof(hmac_key); i++) | |
768 | hmac_key[i] ^= 0x36; /* ipad */ | |
769 | SHA256_Init(&key->head); | |
770 | SHA256_Update(&key->head, hmac_key, sizeof(hmac_key)); | |
771 | ||
772 | for (i = 0; i < sizeof(hmac_key); i++) | |
773 | hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */ | |
774 | SHA256_Init(&key->tail); | |
775 | SHA256_Update(&key->tail, hmac_key, sizeof(hmac_key)); | |
776 | ||
777 | OPENSSL_cleanse(hmac_key, sizeof(hmac_key)); | |
778 | ||
779 | return 1; | |
780 | } | |
781 | case EVP_CTRL_AEAD_TLS1_AAD: | |
782 | { | |
783 | unsigned char *p = ptr; | |
1b6f5a4d | 784 | unsigned int len; |
0f113f3e | 785 | |
c8269881 MC |
786 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
787 | return -1; | |
788 | ||
1b6f5a4d BE |
789 | len = p[arg - 2] << 8 | p[arg - 1]; |
790 | ||
936166af | 791 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
792 | key->payload_length = len; |
793 | if ((key->aux.tls_ver = | |
794 | p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) { | |
a68d3505 RS |
795 | if (len < AES_BLOCK_SIZE) |
796 | return 0; | |
0f113f3e MC |
797 | len -= AES_BLOCK_SIZE; |
798 | p[arg - 2] = len >> 8; | |
799 | p[arg - 1] = len; | |
800 | } | |
801 | key->md = key->head; | |
802 | SHA256_Update(&key->md, p, arg); | |
803 | ||
804 | return (int)(((len + SHA256_DIGEST_LENGTH + | |
805 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE) | |
806 | - len); | |
807 | } else { | |
0f113f3e MC |
808 | memcpy(key->aux.tls_aad, ptr, arg); |
809 | key->payload_length = arg; | |
810 | ||
811 | return SHA256_DIGEST_LENGTH; | |
812 | } | |
813 | } | |
9d6fcd42 | 814 | # if !defined(OPENSSL_NO_MULTIBLOCK) |
0f113f3e MC |
815 | case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE: |
816 | return (int)(5 + 16 + ((arg + 32 + 16) & -16)); | |
817 | case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: | |
818 | { | |
819 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
820 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
821 | unsigned int n4x = 1, x4; | |
822 | unsigned int frag, last, packlen, inp_len; | |
823 | ||
824 | if (arg < 0) | |
825 | return -1; | |
826 | ||
827 | if (u_arg < sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) | |
828 | return -1; | |
829 | ||
830 | inp_len = param->inp[11] << 8 | param->inp[12]; | |
831 | ||
936166af | 832 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
833 | if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION) |
834 | return -1; | |
835 | ||
836 | if (inp_len) { | |
837 | if (inp_len < 4096) | |
838 | return 0; /* too short */ | |
839 | ||
840 | if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5)) | |
841 | n4x = 2; /* AVX2 */ | |
842 | } else if ((n4x = param->interleave / 4) && n4x <= 2) | |
843 | inp_len = param->len; | |
844 | else | |
845 | return -1; | |
846 | ||
847 | key->md = key->head; | |
848 | SHA256_Update(&key->md, param->inp, 13); | |
849 | ||
850 | x4 = 4 * n4x; | |
851 | n4x += 1; | |
852 | ||
853 | frag = inp_len >> n4x; | |
854 | last = inp_len + frag - (frag << n4x); | |
855 | if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) { | |
856 | frag++; | |
857 | last -= x4 - 1; | |
858 | } | |
859 | ||
860 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
861 | packlen = (packlen << n4x) - packlen; | |
862 | packlen += 5 + 16 + ((last + 32 + 16) & -16); | |
863 | ||
864 | param->interleave = x4; | |
865 | ||
866 | return (int)packlen; | |
867 | } else | |
868 | return -1; /* not yet */ | |
869 | } | |
870 | case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: | |
871 | { | |
872 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
873 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
874 | ||
875 | return (int)tls1_1_multi_block_encrypt(key, param->out, | |
876 | param->inp, param->len, | |
16cfc2c9 | 877 | param->interleave / 4); |
0f113f3e MC |
878 | } |
879 | case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT: | |
5158c763 | 880 | # endif |
0f113f3e MC |
881 | default: |
882 | return -1; | |
883 | } | |
884 | } | |
8a97a330 | 885 | |
0f113f3e | 886 | static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher = { |
5158c763 | 887 | # ifdef NID_aes_128_cbc_hmac_sha256 |
0f113f3e | 888 | NID_aes_128_cbc_hmac_sha256, |
5158c763 | 889 | # else |
0f113f3e | 890 | NID_undef, |
5158c763 | 891 | # endif |
936166af | 892 | AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE, |
0f113f3e MC |
893 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | |
894 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
895 | aesni_cbc_hmac_sha256_init_key, | |
896 | aesni_cbc_hmac_sha256_cipher, | |
897 | NULL, | |
898 | sizeof(EVP_AES_HMAC_SHA256), | |
899 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
900 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
901 | aesni_cbc_hmac_sha256_ctrl, | |
902 | NULL | |
903 | }; | |
904 | ||
905 | static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher = { | |
5158c763 | 906 | # ifdef NID_aes_256_cbc_hmac_sha256 |
0f113f3e | 907 | NID_aes_256_cbc_hmac_sha256, |
5158c763 | 908 | # else |
0f113f3e | 909 | NID_undef, |
5158c763 | 910 | # endif |
936166af | 911 | AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE, |
0f113f3e MC |
912 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | |
913 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
914 | aesni_cbc_hmac_sha256_init_key, | |
915 | aesni_cbc_hmac_sha256_cipher, | |
916 | NULL, | |
917 | sizeof(EVP_AES_HMAC_SHA256), | |
918 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
919 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
920 | aesni_cbc_hmac_sha256_ctrl, | |
921 | NULL | |
922 | }; | |
8a97a330 AP |
923 | |
924 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) | |
0f113f3e MC |
925 | { |
926 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
927 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
928 | &aesni_128_cbc_hmac_sha256_cipher : NULL); | |
929 | } | |
8a97a330 AP |
930 | |
931 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) | |
0f113f3e MC |
932 | { |
933 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
934 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
935 | &aesni_256_cbc_hmac_sha256_cipher : NULL); | |
936 | } | |
5158c763 | 937 | #else |
8a97a330 | 938 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) |
0f113f3e MC |
939 | { |
940 | return NULL; | |
941 | } | |
942 | ||
8a97a330 | 943 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) |
0f113f3e MC |
944 | { |
945 | return NULL; | |
946 | } | |
8a97a330 | 947 | #endif |