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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 | ||
25 | #ifndef EVP_CIPH_FLAG_AEAD_CIPHER | |
26 | # define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000 | |
27 | # define EVP_CTRL_AEAD_TLS1_AAD 0x16 | |
28 | # define EVP_CTRL_AEAD_SET_MAC_KEY 0x17 | |
29 | #endif | |
0f113f3e | 30 | |
5158c763 MC |
31 | #if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1) |
32 | # define EVP_CIPH_FLAG_DEFAULT_ASN1 0 | |
33 | #endif | |
34 | ||
35 | #if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK) | |
36 | # define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0 | |
37 | #endif | |
0f113f3e | 38 | |
5158c763 | 39 | #define TLS1_1_VERSION 0x0302 |
0f113f3e MC |
40 | |
41 | typedef struct { | |
42 | AES_KEY ks; | |
43 | SHA256_CTX head, tail, md; | |
44 | size_t payload_length; /* AAD length in decrypt case */ | |
8a97a330 | 45 | union { |
0f113f3e MC |
46 | unsigned int tls_ver; |
47 | unsigned char tls_aad[16]; /* 13 used */ | |
8a97a330 | 48 | } aux; |
0f113f3e | 49 | } EVP_AES_HMAC_SHA256; |
8a97a330 | 50 | |
0f113f3e | 51 | # define NO_PAYLOAD_LENGTH ((size_t)-1) |
8a97a330 | 52 | |
5158c763 | 53 | #if defined(AES_ASM) && ( \ |
0f113f3e | 54 | defined(__x86_64) || defined(__x86_64__) || \ |
b1a07c38 | 55 | defined(_M_AMD64) || defined(_M_X64) ) |
8a97a330 | 56 | |
f0fa5c83 | 57 | extern unsigned int OPENSSL_ia32cap_P[]; |
5158c763 | 58 | # define AESNI_CAPABLE (1<<(57-32)) |
8a97a330 AP |
59 | |
60 | int aesni_set_encrypt_key(const unsigned char *userKey, int bits, | |
0f113f3e | 61 | AES_KEY *key); |
8a97a330 | 62 | int aesni_set_decrypt_key(const unsigned char *userKey, int bits, |
0f113f3e | 63 | AES_KEY *key); |
8a97a330 AP |
64 | |
65 | void aesni_cbc_encrypt(const unsigned char *in, | |
0f113f3e MC |
66 | unsigned char *out, |
67 | size_t length, | |
68 | const AES_KEY *key, unsigned char *ivec, int enc); | |
8a97a330 | 69 | |
0f113f3e MC |
70 | int aesni_cbc_sha256_enc(const void *inp, void *out, size_t blocks, |
71 | const AES_KEY *key, unsigned char iv[16], | |
72 | SHA256_CTX *ctx, const void *in0); | |
8a97a330 | 73 | |
5158c763 | 74 | # define data(ctx) ((EVP_AES_HMAC_SHA256 *)EVP_CIPHER_CTX_get_cipher_data(ctx)) |
8a97a330 AP |
75 | |
76 | static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx, | |
0f113f3e MC |
77 | const unsigned char *inkey, |
78 | const unsigned char *iv, int enc) | |
79 | { | |
80 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
81 | int ret; | |
8a97a330 | 82 | |
0f113f3e MC |
83 | if (enc) |
84 | memset(&key->ks, 0, sizeof(key->ks.rd_key)), | |
936166af RL |
85 | ret = aesni_set_encrypt_key(inkey, |
86 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
87 | &key->ks); | |
0f113f3e | 88 | else |
936166af RL |
89 | ret = aesni_set_decrypt_key(inkey, |
90 | EVP_CIPHER_CTX_key_length(ctx) * 8, | |
91 | &key->ks); | |
8a97a330 | 92 | |
0f113f3e MC |
93 | SHA256_Init(&key->head); /* handy when benchmarking */ |
94 | key->tail = key->head; | |
95 | key->md = key->head; | |
8a97a330 | 96 | |
0f113f3e | 97 | key->payload_length = NO_PAYLOAD_LENGTH; |
8a97a330 | 98 | |
0f113f3e MC |
99 | return ret < 0 ? 0 : 1; |
100 | } | |
8a97a330 | 101 | |
5158c763 | 102 | # define STITCHED_CALL |
8a97a330 | 103 | |
5158c763 MC |
104 | # if !defined(STITCHED_CALL) |
105 | # define aes_off 0 | |
106 | # endif | |
8a97a330 | 107 | |
0f113f3e | 108 | void sha256_block_data_order(void *c, const void *p, size_t len); |
8a97a330 | 109 | |
0f113f3e MC |
110 | static void sha256_update(SHA256_CTX *c, const void *data, size_t len) |
111 | { | |
112 | const unsigned char *ptr = data; | |
113 | size_t res; | |
114 | ||
115 | if ((res = c->num)) { | |
116 | res = SHA256_CBLOCK - res; | |
117 | if (len < res) | |
118 | res = len; | |
119 | SHA256_Update(c, ptr, res); | |
120 | ptr += res; | |
121 | len -= res; | |
122 | } | |
123 | ||
124 | res = len % SHA256_CBLOCK; | |
125 | len -= res; | |
126 | ||
127 | if (len) { | |
128 | sha256_block_data_order(c, ptr, len / SHA256_CBLOCK); | |
129 | ||
130 | ptr += len; | |
131 | c->Nh += len >> 29; | |
132 | c->Nl += len <<= 3; | |
133 | if (c->Nl < (unsigned int)len) | |
134 | c->Nh++; | |
135 | } | |
136 | ||
137 | if (res) | |
138 | SHA256_Update(c, ptr, res); | |
8a97a330 AP |
139 | } |
140 | ||
5158c763 MC |
141 | # ifdef SHA256_Update |
142 | # undef SHA256_Update | |
143 | # endif | |
144 | # define SHA256_Update sha256_update | |
8a97a330 | 145 | |
5158c763 | 146 | # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK |
7f893258 | 147 | |
0f113f3e MC |
148 | typedef struct { |
149 | unsigned int A[8], B[8], C[8], D[8], E[8], F[8], G[8], H[8]; | |
150 | } SHA256_MB_CTX; | |
151 | typedef struct { | |
152 | const unsigned char *ptr; | |
153 | int blocks; | |
154 | } HASH_DESC; | |
7f893258 | 155 | |
0f113f3e | 156 | void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int); |
7f893258 | 157 | |
0f113f3e MC |
158 | typedef struct { |
159 | const unsigned char *inp; | |
160 | unsigned char *out; | |
161 | int blocks; | |
162 | u64 iv[2]; | |
163 | } CIPH_DESC; | |
7f893258 | 164 | |
0f113f3e | 165 | void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int); |
7f893258 | 166 | |
a69c0a1b | 167 | static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key, |
0f113f3e MC |
168 | unsigned char *out, |
169 | const unsigned char *inp, | |
170 | size_t inp_len, int n4x) | |
171 | { /* n4x is 1 or 2 */ | |
172 | HASH_DESC hash_d[8], edges[8]; | |
173 | CIPH_DESC ciph_d[8]; | |
174 | unsigned char storage[sizeof(SHA256_MB_CTX) + 32]; | |
175 | union { | |
176 | u64 q[16]; | |
177 | u32 d[32]; | |
178 | u8 c[128]; | |
179 | } blocks[8]; | |
180 | SHA256_MB_CTX *ctx; | |
181 | unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed = | |
182 | 0; | |
183 | size_t ret = 0; | |
184 | u8 *IVs; | |
5158c763 | 185 | # if defined(BSWAP8) |
0f113f3e | 186 | u64 seqnum; |
5158c763 | 187 | # endif |
0f113f3e MC |
188 | |
189 | /* ask for IVs in bulk */ | |
190 | if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0) | |
191 | return 0; | |
192 | ||
193 | /* align */ | |
194 | ctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); | |
195 | ||
196 | frag = (unsigned int)inp_len >> (1 + n4x); | |
197 | last = (unsigned int)inp_len + frag - (frag << (1 + n4x)); | |
198 | if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) { | |
199 | frag++; | |
200 | last -= x4 - 1; | |
201 | } | |
202 | ||
203 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
204 | ||
205 | /* populate descriptors with pointers and IVs */ | |
206 | hash_d[0].ptr = inp; | |
207 | ciph_d[0].inp = inp; | |
208 | /* 5+16 is place for header and explicit IV */ | |
209 | ciph_d[0].out = out + 5 + 16; | |
210 | memcpy(ciph_d[0].out - 16, IVs, 16); | |
211 | memcpy(ciph_d[0].iv, IVs, 16); | |
212 | IVs += 16; | |
213 | ||
214 | for (i = 1; i < x4; i++) { | |
215 | ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag; | |
216 | ciph_d[i].out = ciph_d[i - 1].out + packlen; | |
217 | memcpy(ciph_d[i].out - 16, IVs, 16); | |
218 | memcpy(ciph_d[i].iv, IVs, 16); | |
219 | IVs += 16; | |
220 | } | |
221 | ||
5158c763 | 222 | # if defined(BSWAP8) |
0f113f3e MC |
223 | memcpy(blocks[0].c, key->md.data, 8); |
224 | seqnum = BSWAP8(blocks[0].q[0]); | |
5158c763 | 225 | # endif |
0f113f3e MC |
226 | for (i = 0; i < x4; i++) { |
227 | unsigned int len = (i == (x4 - 1) ? last : frag); | |
5158c763 | 228 | # if !defined(BSWAP8) |
0f113f3e | 229 | unsigned int carry, j; |
5158c763 | 230 | # endif |
0f113f3e MC |
231 | |
232 | ctx->A[i] = key->md.h[0]; | |
233 | ctx->B[i] = key->md.h[1]; | |
234 | ctx->C[i] = key->md.h[2]; | |
235 | ctx->D[i] = key->md.h[3]; | |
236 | ctx->E[i] = key->md.h[4]; | |
237 | ctx->F[i] = key->md.h[5]; | |
238 | ctx->G[i] = key->md.h[6]; | |
239 | ctx->H[i] = key->md.h[7]; | |
240 | ||
241 | /* fix seqnum */ | |
5158c763 | 242 | # if defined(BSWAP8) |
0f113f3e | 243 | blocks[i].q[0] = BSWAP8(seqnum + i); |
5158c763 | 244 | # else |
0f113f3e MC |
245 | for (carry = i, j = 8; j--;) { |
246 | blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry; | |
247 | carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1); | |
248 | } | |
5158c763 | 249 | # endif |
0f113f3e MC |
250 | blocks[i].c[8] = ((u8 *)key->md.data)[8]; |
251 | blocks[i].c[9] = ((u8 *)key->md.data)[9]; | |
252 | blocks[i].c[10] = ((u8 *)key->md.data)[10]; | |
253 | /* fix length */ | |
254 | blocks[i].c[11] = (u8)(len >> 8); | |
255 | blocks[i].c[12] = (u8)(len); | |
256 | ||
257 | memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13); | |
258 | hash_d[i].ptr += 64 - 13; | |
259 | hash_d[i].blocks = (len - (64 - 13)) / 64; | |
260 | ||
261 | edges[i].ptr = blocks[i].c; | |
262 | edges[i].blocks = 1; | |
263 | } | |
264 | ||
265 | /* hash 13-byte headers and first 64-13 bytes of inputs */ | |
266 | sha256_multi_block(ctx, edges, n4x); | |
267 | /* hash bulk inputs */ | |
5158c763 MC |
268 | # define MAXCHUNKSIZE 2048 |
269 | # if MAXCHUNKSIZE%64 | |
270 | # error "MAXCHUNKSIZE is not divisible by 64" | |
271 | # elif MAXCHUNKSIZE | |
0f113f3e MC |
272 | /* |
273 | * goal is to minimize pressure on L1 cache by moving in shorter steps, | |
274 | * so that hashed data is still in the cache by the time we encrypt it | |
275 | */ | |
276 | minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64; | |
277 | if (minblocks > MAXCHUNKSIZE / 64) { | |
278 | for (i = 0; i < x4; i++) { | |
279 | edges[i].ptr = hash_d[i].ptr; | |
280 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
281 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
282 | } | |
283 | do { | |
284 | sha256_multi_block(ctx, edges, n4x); | |
285 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
286 | ||
287 | for (i = 0; i < x4; i++) { | |
288 | edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE; | |
289 | hash_d[i].blocks -= MAXCHUNKSIZE / 64; | |
290 | edges[i].blocks = MAXCHUNKSIZE / 64; | |
291 | ciph_d[i].inp += MAXCHUNKSIZE; | |
292 | ciph_d[i].out += MAXCHUNKSIZE; | |
293 | ciph_d[i].blocks = MAXCHUNKSIZE / 16; | |
294 | memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16); | |
295 | } | |
296 | processed += MAXCHUNKSIZE; | |
297 | minblocks -= MAXCHUNKSIZE / 64; | |
298 | } while (minblocks > MAXCHUNKSIZE / 64); | |
299 | } | |
5158c763 MC |
300 | # endif |
301 | # undef MAXCHUNKSIZE | |
0f113f3e MC |
302 | sha256_multi_block(ctx, hash_d, n4x); |
303 | ||
304 | memset(blocks, 0, sizeof(blocks)); | |
305 | for (i = 0; i < x4; i++) { | |
306 | unsigned int len = (i == (x4 - 1) ? last : frag), | |
307 | off = hash_d[i].blocks * 64; | |
308 | const unsigned char *ptr = hash_d[i].ptr + off; | |
309 | ||
310 | off = (len - processed) - (64 - 13) - off; /* remainder actually */ | |
311 | memcpy(blocks[i].c, ptr, off); | |
312 | blocks[i].c[off] = 0x80; | |
313 | len += 64 + 13; /* 64 is HMAC header */ | |
314 | len *= 8; /* convert to bits */ | |
315 | if (off < (64 - 8)) { | |
5158c763 | 316 | # ifdef BSWAP4 |
0f113f3e | 317 | blocks[i].d[15] = BSWAP4(len); |
5158c763 | 318 | # else |
0f113f3e | 319 | PUTU32(blocks[i].c + 60, len); |
5158c763 | 320 | # endif |
0f113f3e MC |
321 | edges[i].blocks = 1; |
322 | } else { | |
5158c763 | 323 | # ifdef BSWAP4 |
0f113f3e | 324 | blocks[i].d[31] = BSWAP4(len); |
5158c763 | 325 | # else |
0f113f3e | 326 | PUTU32(blocks[i].c + 124, len); |
5158c763 | 327 | # endif |
0f113f3e MC |
328 | edges[i].blocks = 2; |
329 | } | |
330 | edges[i].ptr = blocks[i].c; | |
331 | } | |
332 | ||
333 | /* hash input tails and finalize */ | |
334 | sha256_multi_block(ctx, edges, n4x); | |
335 | ||
336 | memset(blocks, 0, sizeof(blocks)); | |
337 | for (i = 0; i < x4; i++) { | |
5158c763 | 338 | # ifdef BSWAP4 |
0f113f3e MC |
339 | blocks[i].d[0] = BSWAP4(ctx->A[i]); |
340 | ctx->A[i] = key->tail.h[0]; | |
341 | blocks[i].d[1] = BSWAP4(ctx->B[i]); | |
342 | ctx->B[i] = key->tail.h[1]; | |
343 | blocks[i].d[2] = BSWAP4(ctx->C[i]); | |
344 | ctx->C[i] = key->tail.h[2]; | |
345 | blocks[i].d[3] = BSWAP4(ctx->D[i]); | |
346 | ctx->D[i] = key->tail.h[3]; | |
347 | blocks[i].d[4] = BSWAP4(ctx->E[i]); | |
348 | ctx->E[i] = key->tail.h[4]; | |
349 | blocks[i].d[5] = BSWAP4(ctx->F[i]); | |
350 | ctx->F[i] = key->tail.h[5]; | |
351 | blocks[i].d[6] = BSWAP4(ctx->G[i]); | |
352 | ctx->G[i] = key->tail.h[6]; | |
353 | blocks[i].d[7] = BSWAP4(ctx->H[i]); | |
354 | ctx->H[i] = key->tail.h[7]; | |
355 | blocks[i].c[32] = 0x80; | |
356 | blocks[i].d[15] = BSWAP4((64 + 32) * 8); | |
5158c763 | 357 | # else |
0f113f3e MC |
358 | PUTU32(blocks[i].c + 0, ctx->A[i]); |
359 | ctx->A[i] = key->tail.h[0]; | |
360 | PUTU32(blocks[i].c + 4, ctx->B[i]); | |
361 | ctx->B[i] = key->tail.h[1]; | |
362 | PUTU32(blocks[i].c + 8, ctx->C[i]); | |
363 | ctx->C[i] = key->tail.h[2]; | |
364 | PUTU32(blocks[i].c + 12, ctx->D[i]); | |
365 | ctx->D[i] = key->tail.h[3]; | |
366 | PUTU32(blocks[i].c + 16, ctx->E[i]); | |
367 | ctx->E[i] = key->tail.h[4]; | |
368 | PUTU32(blocks[i].c + 20, ctx->F[i]); | |
369 | ctx->F[i] = key->tail.h[5]; | |
370 | PUTU32(blocks[i].c + 24, ctx->G[i]); | |
371 | ctx->G[i] = key->tail.h[6]; | |
372 | PUTU32(blocks[i].c + 28, ctx->H[i]); | |
373 | ctx->H[i] = key->tail.h[7]; | |
374 | blocks[i].c[32] = 0x80; | |
375 | PUTU32(blocks[i].c + 60, (64 + 32) * 8); | |
5158c763 | 376 | # endif |
0f113f3e MC |
377 | edges[i].ptr = blocks[i].c; |
378 | edges[i].blocks = 1; | |
379 | } | |
380 | ||
381 | /* finalize MACs */ | |
382 | sha256_multi_block(ctx, edges, n4x); | |
383 | ||
384 | for (i = 0; i < x4; i++) { | |
385 | unsigned int len = (i == (x4 - 1) ? last : frag), pad, j; | |
386 | unsigned char *out0 = out; | |
387 | ||
388 | memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed); | |
389 | ciph_d[i].inp = ciph_d[i].out; | |
390 | ||
391 | out += 5 + 16 + len; | |
392 | ||
393 | /* write MAC */ | |
394 | PUTU32(out + 0, ctx->A[i]); | |
395 | PUTU32(out + 4, ctx->B[i]); | |
396 | PUTU32(out + 8, ctx->C[i]); | |
397 | PUTU32(out + 12, ctx->D[i]); | |
398 | PUTU32(out + 16, ctx->E[i]); | |
399 | PUTU32(out + 20, ctx->F[i]); | |
400 | PUTU32(out + 24, ctx->G[i]); | |
401 | PUTU32(out + 28, ctx->H[i]); | |
402 | out += 32; | |
403 | len += 32; | |
404 | ||
405 | /* pad */ | |
406 | pad = 15 - len % 16; | |
407 | for (j = 0; j <= pad; j++) | |
408 | *(out++) = pad; | |
409 | len += pad + 1; | |
410 | ||
411 | ciph_d[i].blocks = (len - processed) / 16; | |
412 | len += 16; /* account for explicit iv */ | |
413 | ||
414 | /* arrange header */ | |
415 | out0[0] = ((u8 *)key->md.data)[8]; | |
416 | out0[1] = ((u8 *)key->md.data)[9]; | |
417 | out0[2] = ((u8 *)key->md.data)[10]; | |
418 | out0[3] = (u8)(len >> 8); | |
419 | out0[4] = (u8)(len); | |
420 | ||
421 | ret += len + 5; | |
422 | inp += frag; | |
423 | } | |
424 | ||
425 | aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x); | |
426 | ||
427 | OPENSSL_cleanse(blocks, sizeof(blocks)); | |
428 | OPENSSL_cleanse(ctx, sizeof(*ctx)); | |
429 | ||
430 | return ret; | |
7f893258 | 431 | } |
5158c763 | 432 | # endif |
7f893258 | 433 | |
0f113f3e MC |
434 | static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx, |
435 | unsigned char *out, | |
436 | const unsigned char *in, size_t len) | |
437 | { | |
438 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
439 | unsigned int l; | |
440 | size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and | |
441 | * later */ | |
442 | sha_off = 0; | |
5158c763 | 443 | # if defined(STITCHED_CALL) |
0f113f3e MC |
444 | size_t aes_off = 0, blocks; |
445 | ||
446 | sha_off = SHA256_CBLOCK - key->md.num; | |
5158c763 | 447 | # endif |
0f113f3e MC |
448 | |
449 | key->payload_length = NO_PAYLOAD_LENGTH; | |
450 | ||
451 | if (len % AES_BLOCK_SIZE) | |
452 | return 0; | |
453 | ||
936166af | 454 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
455 | if (plen == NO_PAYLOAD_LENGTH) |
456 | plen = len; | |
457 | else if (len != | |
458 | ((plen + SHA256_DIGEST_LENGTH + | |
459 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)) | |
460 | return 0; | |
461 | else if (key->aux.tls_ver >= TLS1_1_VERSION) | |
462 | iv = AES_BLOCK_SIZE; | |
463 | ||
5158c763 | 464 | # if defined(STITCHED_CALL) |
a5fd24d1 AP |
465 | /* |
466 | * Assembly stitch handles AVX-capable processors, but its | |
467 | * performance is not optimal on AMD Jaguar, ~40% worse, for | |
468 | * unknown reasons. Incidentally processor in question supports | |
469 | * AVX, but not AMD-specific XOP extension, which can be used | |
470 | * to identify it and avoid stitch invocation. So that after we | |
471 | * establish that current CPU supports AVX, we even see if it's | |
472 | * either even XOP-capable Bulldozer-based or GenuineIntel one. | |
473 | */ | |
0f113f3e | 474 | if (OPENSSL_ia32cap_P[1] & (1 << (60 - 32)) && /* AVX? */ |
a5fd24d1 AP |
475 | ((OPENSSL_ia32cap_P[1] & (1 << (43 - 32))) /* XOP? */ |
476 | | (OPENSSL_ia32cap_P[0] & (1<<30))) && /* "Intel CPU"? */ | |
0f113f3e MC |
477 | plen > (sha_off + iv) && |
478 | (blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) { | |
479 | SHA256_Update(&key->md, in + iv, sha_off); | |
480 | ||
481 | (void)aesni_cbc_sha256_enc(in, out, blocks, &key->ks, | |
936166af RL |
482 | EVP_CIPHER_CTX_iv_noconst(ctx), |
483 | &key->md, in + iv + sha_off); | |
0f113f3e MC |
484 | blocks *= SHA256_CBLOCK; |
485 | aes_off += blocks; | |
486 | sha_off += blocks; | |
487 | key->md.Nh += blocks >> 29; | |
488 | key->md.Nl += blocks <<= 3; | |
489 | if (key->md.Nl < (unsigned int)blocks) | |
490 | key->md.Nh++; | |
491 | } else { | |
492 | sha_off = 0; | |
493 | } | |
5158c763 | 494 | # endif |
0f113f3e MC |
495 | sha_off += iv; |
496 | SHA256_Update(&key->md, in + sha_off, plen - sha_off); | |
497 | ||
498 | if (plen != len) { /* "TLS" mode of operation */ | |
499 | if (in != out) | |
500 | memcpy(out + aes_off, in + aes_off, plen - aes_off); | |
501 | ||
502 | /* calculate HMAC and append it to payload */ | |
503 | SHA256_Final(out + plen, &key->md); | |
504 | key->md = key->tail; | |
505 | SHA256_Update(&key->md, out + plen, SHA256_DIGEST_LENGTH); | |
506 | SHA256_Final(out + plen, &key->md); | |
507 | ||
508 | /* pad the payload|hmac */ | |
509 | plen += SHA256_DIGEST_LENGTH; | |
510 | for (l = len - plen - 1; plen < len; plen++) | |
511 | out[plen] = l; | |
512 | /* encrypt HMAC|padding at once */ | |
513 | aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off, | |
936166af | 514 | &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1); |
0f113f3e MC |
515 | } else { |
516 | aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off, | |
936166af | 517 | &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1); |
0f113f3e MC |
518 | } |
519 | } else { | |
520 | union { | |
521 | unsigned int u[SHA256_DIGEST_LENGTH / sizeof(unsigned int)]; | |
522 | unsigned char c[64 + SHA256_DIGEST_LENGTH]; | |
523 | } mac, *pmac; | |
524 | ||
525 | /* arrange cache line alignment */ | |
526 | pmac = (void *)(((size_t)mac.c + 63) & ((size_t)0 - 64)); | |
527 | ||
528 | /* decrypt HMAC|padding at once */ | |
936166af RL |
529 | aesni_cbc_encrypt(in, out, len, &key->ks, |
530 | EVP_CIPHER_CTX_iv_noconst(ctx), 0); | |
0f113f3e MC |
531 | |
532 | if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */ | |
533 | size_t inp_len, mask, j, i; | |
534 | unsigned int res, maxpad, pad, bitlen; | |
535 | int ret = 1; | |
536 | union { | |
537 | unsigned int u[SHA_LBLOCK]; | |
538 | unsigned char c[SHA256_CBLOCK]; | |
539 | } *data = (void *)key->md.data; | |
540 | ||
541 | if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3]) | |
542 | >= TLS1_1_VERSION) | |
543 | iv = AES_BLOCK_SIZE; | |
544 | ||
545 | if (len < (iv + SHA256_DIGEST_LENGTH + 1)) | |
546 | return 0; | |
547 | ||
548 | /* omit explicit iv */ | |
549 | out += iv; | |
550 | len -= iv; | |
551 | ||
552 | /* figure out payload length */ | |
553 | pad = out[len - 1]; | |
554 | maxpad = len - (SHA256_DIGEST_LENGTH + 1); | |
555 | maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8); | |
556 | maxpad &= 255; | |
557 | ||
70428ead KR |
558 | ret &= constant_time_ge(maxpad, pad); |
559 | ||
0f113f3e MC |
560 | inp_len = len - (SHA256_DIGEST_LENGTH + pad + 1); |
561 | mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1))); | |
562 | inp_len &= mask; | |
563 | ret &= (int)mask; | |
564 | ||
565 | key->aux.tls_aad[plen - 2] = inp_len >> 8; | |
566 | key->aux.tls_aad[plen - 1] = inp_len; | |
567 | ||
568 | /* calculate HMAC */ | |
569 | key->md = key->head; | |
570 | SHA256_Update(&key->md, key->aux.tls_aad, plen); | |
571 | ||
5158c763 | 572 | # if 1 |
0f113f3e MC |
573 | len -= SHA256_DIGEST_LENGTH; /* amend mac */ |
574 | if (len >= (256 + SHA256_CBLOCK)) { | |
575 | j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK); | |
576 | j += SHA256_CBLOCK - key->md.num; | |
577 | SHA256_Update(&key->md, out, j); | |
578 | out += j; | |
579 | len -= j; | |
580 | inp_len -= j; | |
581 | } | |
582 | ||
583 | /* but pretend as if we hashed padded payload */ | |
584 | bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */ | |
5158c763 | 585 | # ifdef BSWAP4 |
0f113f3e | 586 | bitlen = BSWAP4(bitlen); |
5158c763 | 587 | # else |
0f113f3e MC |
588 | mac.c[0] = 0; |
589 | mac.c[1] = (unsigned char)(bitlen >> 16); | |
590 | mac.c[2] = (unsigned char)(bitlen >> 8); | |
591 | mac.c[3] = (unsigned char)bitlen; | |
592 | bitlen = mac.u[0]; | |
5158c763 | 593 | # endif |
0f113f3e MC |
594 | |
595 | pmac->u[0] = 0; | |
596 | pmac->u[1] = 0; | |
597 | pmac->u[2] = 0; | |
598 | pmac->u[3] = 0; | |
599 | pmac->u[4] = 0; | |
600 | pmac->u[5] = 0; | |
601 | pmac->u[6] = 0; | |
602 | pmac->u[7] = 0; | |
603 | ||
604 | for (res = key->md.num, j = 0; j < len; j++) { | |
605 | size_t c = out[j]; | |
606 | mask = (j - inp_len) >> (sizeof(j) * 8 - 8); | |
607 | c &= mask; | |
608 | c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8)); | |
609 | data->c[res++] = (unsigned char)c; | |
610 | ||
611 | if (res != SHA256_CBLOCK) | |
612 | continue; | |
613 | ||
614 | /* j is not incremented yet */ | |
615 | mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1)); | |
616 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
617 | sha256_block_data_order(&key->md, data, 1); | |
618 | mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1)); | |
619 | pmac->u[0] |= key->md.h[0] & mask; | |
620 | pmac->u[1] |= key->md.h[1] & mask; | |
621 | pmac->u[2] |= key->md.h[2] & mask; | |
622 | pmac->u[3] |= key->md.h[3] & mask; | |
623 | pmac->u[4] |= key->md.h[4] & mask; | |
624 | pmac->u[5] |= key->md.h[5] & mask; | |
625 | pmac->u[6] |= key->md.h[6] & mask; | |
626 | pmac->u[7] |= key->md.h[7] & mask; | |
627 | res = 0; | |
628 | } | |
629 | ||
630 | for (i = res; i < SHA256_CBLOCK; i++, j++) | |
631 | data->c[i] = 0; | |
632 | ||
633 | if (res > SHA256_CBLOCK - 8) { | |
634 | mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1)); | |
635 | data->u[SHA_LBLOCK - 1] |= bitlen & mask; | |
636 | sha256_block_data_order(&key->md, data, 1); | |
637 | mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
638 | pmac->u[0] |= key->md.h[0] & mask; | |
639 | pmac->u[1] |= key->md.h[1] & mask; | |
640 | pmac->u[2] |= key->md.h[2] & mask; | |
641 | pmac->u[3] |= key->md.h[3] & mask; | |
642 | pmac->u[4] |= key->md.h[4] & mask; | |
643 | pmac->u[5] |= key->md.h[5] & mask; | |
644 | pmac->u[6] |= key->md.h[6] & mask; | |
645 | pmac->u[7] |= key->md.h[7] & mask; | |
646 | ||
647 | memset(data, 0, SHA256_CBLOCK); | |
648 | j += 64; | |
649 | } | |
650 | data->u[SHA_LBLOCK - 1] = bitlen; | |
651 | sha256_block_data_order(&key->md, data, 1); | |
652 | mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1)); | |
653 | pmac->u[0] |= key->md.h[0] & mask; | |
654 | pmac->u[1] |= key->md.h[1] & mask; | |
655 | pmac->u[2] |= key->md.h[2] & mask; | |
656 | pmac->u[3] |= key->md.h[3] & mask; | |
657 | pmac->u[4] |= key->md.h[4] & mask; | |
658 | pmac->u[5] |= key->md.h[5] & mask; | |
659 | pmac->u[6] |= key->md.h[6] & mask; | |
660 | pmac->u[7] |= key->md.h[7] & mask; | |
661 | ||
5158c763 | 662 | # ifdef BSWAP4 |
0f113f3e MC |
663 | pmac->u[0] = BSWAP4(pmac->u[0]); |
664 | pmac->u[1] = BSWAP4(pmac->u[1]); | |
665 | pmac->u[2] = BSWAP4(pmac->u[2]); | |
666 | pmac->u[3] = BSWAP4(pmac->u[3]); | |
667 | pmac->u[4] = BSWAP4(pmac->u[4]); | |
668 | pmac->u[5] = BSWAP4(pmac->u[5]); | |
669 | pmac->u[6] = BSWAP4(pmac->u[6]); | |
670 | pmac->u[7] = BSWAP4(pmac->u[7]); | |
5158c763 | 671 | # else |
0f113f3e MC |
672 | for (i = 0; i < 8; i++) { |
673 | res = pmac->u[i]; | |
674 | pmac->c[4 * i + 0] = (unsigned char)(res >> 24); | |
675 | pmac->c[4 * i + 1] = (unsigned char)(res >> 16); | |
676 | pmac->c[4 * i + 2] = (unsigned char)(res >> 8); | |
677 | pmac->c[4 * i + 3] = (unsigned char)res; | |
678 | } | |
5158c763 | 679 | # endif |
0f113f3e | 680 | len += SHA256_DIGEST_LENGTH; |
5158c763 | 681 | # else |
0f113f3e MC |
682 | SHA256_Update(&key->md, out, inp_len); |
683 | res = key->md.num; | |
684 | SHA256_Final(pmac->c, &key->md); | |
685 | ||
686 | { | |
687 | unsigned int inp_blocks, pad_blocks; | |
688 | ||
689 | /* but pretend as if we hashed padded payload */ | |
690 | inp_blocks = | |
691 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
692 | res += (unsigned int)(len - inp_len); | |
693 | pad_blocks = res / SHA256_CBLOCK; | |
694 | res %= SHA256_CBLOCK; | |
695 | pad_blocks += | |
696 | 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1)); | |
697 | for (; inp_blocks < pad_blocks; inp_blocks++) | |
698 | sha1_block_data_order(&key->md, data, 1); | |
699 | } | |
5158c763 | 700 | # endif |
0f113f3e MC |
701 | key->md = key->tail; |
702 | SHA256_Update(&key->md, pmac->c, SHA256_DIGEST_LENGTH); | |
703 | SHA256_Final(pmac->c, &key->md); | |
704 | ||
705 | /* verify HMAC */ | |
706 | out += inp_len; | |
707 | len -= inp_len; | |
5158c763 | 708 | # if 1 |
0f113f3e MC |
709 | { |
710 | unsigned char *p = | |
711 | out + len - 1 - maxpad - SHA256_DIGEST_LENGTH; | |
712 | size_t off = out - p; | |
713 | unsigned int c, cmask; | |
714 | ||
715 | maxpad += SHA256_DIGEST_LENGTH; | |
716 | for (res = 0, i = 0, j = 0; j < maxpad; j++) { | |
717 | c = p[j]; | |
718 | cmask = | |
719 | ((int)(j - off - SHA256_DIGEST_LENGTH)) >> | |
720 | (sizeof(int) * 8 - 1); | |
721 | res |= (c ^ pad) & ~cmask; /* ... and padding */ | |
722 | cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1); | |
723 | res |= (c ^ pmac->c[i]) & cmask; | |
724 | i += 1 & cmask; | |
725 | } | |
726 | maxpad -= SHA256_DIGEST_LENGTH; | |
727 | ||
728 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
729 | ret &= (int)~res; | |
730 | } | |
5158c763 | 731 | # else |
0f113f3e MC |
732 | for (res = 0, i = 0; i < SHA256_DIGEST_LENGTH; i++) |
733 | res |= out[i] ^ pmac->c[i]; | |
734 | res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1)); | |
735 | ret &= (int)~res; | |
736 | ||
737 | /* verify padding */ | |
738 | pad = (pad & ~res) | (maxpad & res); | |
739 | out = out + len - 1 - pad; | |
740 | for (res = 0, i = 0; i < pad; i++) | |
741 | res |= out[i] ^ pad; | |
742 | ||
743 | res = (0 - res) >> (sizeof(res) * 8 - 1); | |
744 | ret &= (int)~res; | |
5158c763 | 745 | # endif |
0f113f3e MC |
746 | return ret; |
747 | } else { | |
748 | SHA256_Update(&key->md, out, len); | |
749 | } | |
750 | } | |
751 | ||
752 | return 1; | |
753 | } | |
8a97a330 | 754 | |
0f113f3e MC |
755 | static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, |
756 | void *ptr) | |
757 | { | |
758 | EVP_AES_HMAC_SHA256 *key = data(ctx); | |
759 | unsigned int u_arg = (unsigned int)arg; | |
760 | ||
761 | switch (type) { | |
762 | case EVP_CTRL_AEAD_SET_MAC_KEY: | |
763 | { | |
764 | unsigned int i; | |
765 | unsigned char hmac_key[64]; | |
766 | ||
767 | memset(hmac_key, 0, sizeof(hmac_key)); | |
768 | ||
769 | if (arg < 0) | |
770 | return -1; | |
771 | ||
772 | if (u_arg > sizeof(hmac_key)) { | |
773 | SHA256_Init(&key->head); | |
774 | SHA256_Update(&key->head, ptr, arg); | |
775 | SHA256_Final(hmac_key, &key->head); | |
776 | } else { | |
777 | memcpy(hmac_key, ptr, arg); | |
778 | } | |
779 | ||
780 | for (i = 0; i < sizeof(hmac_key); i++) | |
781 | hmac_key[i] ^= 0x36; /* ipad */ | |
782 | SHA256_Init(&key->head); | |
783 | SHA256_Update(&key->head, hmac_key, sizeof(hmac_key)); | |
784 | ||
785 | for (i = 0; i < sizeof(hmac_key); i++) | |
786 | hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */ | |
787 | SHA256_Init(&key->tail); | |
788 | SHA256_Update(&key->tail, hmac_key, sizeof(hmac_key)); | |
789 | ||
790 | OPENSSL_cleanse(hmac_key, sizeof(hmac_key)); | |
791 | ||
792 | return 1; | |
793 | } | |
794 | case EVP_CTRL_AEAD_TLS1_AAD: | |
795 | { | |
796 | unsigned char *p = ptr; | |
797 | unsigned int len = p[arg - 2] << 8 | p[arg - 1]; | |
798 | ||
c8269881 MC |
799 | if (arg != EVP_AEAD_TLS1_AAD_LEN) |
800 | return -1; | |
801 | ||
936166af | 802 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
803 | key->payload_length = len; |
804 | if ((key->aux.tls_ver = | |
805 | p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) { | |
806 | len -= AES_BLOCK_SIZE; | |
807 | p[arg - 2] = len >> 8; | |
808 | p[arg - 1] = len; | |
809 | } | |
810 | key->md = key->head; | |
811 | SHA256_Update(&key->md, p, arg); | |
812 | ||
813 | return (int)(((len + SHA256_DIGEST_LENGTH + | |
814 | AES_BLOCK_SIZE) & -AES_BLOCK_SIZE) | |
815 | - len); | |
816 | } else { | |
0f113f3e MC |
817 | memcpy(key->aux.tls_aad, ptr, arg); |
818 | key->payload_length = arg; | |
819 | ||
820 | return SHA256_DIGEST_LENGTH; | |
821 | } | |
822 | } | |
5158c763 | 823 | # if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK |
0f113f3e MC |
824 | case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE: |
825 | return (int)(5 + 16 + ((arg + 32 + 16) & -16)); | |
826 | case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: | |
827 | { | |
828 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
829 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
830 | unsigned int n4x = 1, x4; | |
831 | unsigned int frag, last, packlen, inp_len; | |
832 | ||
833 | if (arg < 0) | |
834 | return -1; | |
835 | ||
836 | if (u_arg < sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM)) | |
837 | return -1; | |
838 | ||
839 | inp_len = param->inp[11] << 8 | param->inp[12]; | |
840 | ||
936166af | 841 | if (EVP_CIPHER_CTX_encrypting(ctx)) { |
0f113f3e MC |
842 | if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION) |
843 | return -1; | |
844 | ||
845 | if (inp_len) { | |
846 | if (inp_len < 4096) | |
847 | return 0; /* too short */ | |
848 | ||
849 | if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5)) | |
850 | n4x = 2; /* AVX2 */ | |
851 | } else if ((n4x = param->interleave / 4) && n4x <= 2) | |
852 | inp_len = param->len; | |
853 | else | |
854 | return -1; | |
855 | ||
856 | key->md = key->head; | |
857 | SHA256_Update(&key->md, param->inp, 13); | |
858 | ||
859 | x4 = 4 * n4x; | |
860 | n4x += 1; | |
861 | ||
862 | frag = inp_len >> n4x; | |
863 | last = inp_len + frag - (frag << n4x); | |
864 | if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) { | |
865 | frag++; | |
866 | last -= x4 - 1; | |
867 | } | |
868 | ||
869 | packlen = 5 + 16 + ((frag + 32 + 16) & -16); | |
870 | packlen = (packlen << n4x) - packlen; | |
871 | packlen += 5 + 16 + ((last + 32 + 16) & -16); | |
872 | ||
873 | param->interleave = x4; | |
874 | ||
875 | return (int)packlen; | |
876 | } else | |
877 | return -1; /* not yet */ | |
878 | } | |
879 | case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: | |
880 | { | |
881 | EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param = | |
882 | (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr; | |
883 | ||
884 | return (int)tls1_1_multi_block_encrypt(key, param->out, | |
885 | param->inp, param->len, | |
886 | param->interleave / 4); | |
887 | } | |
888 | case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT: | |
5158c763 | 889 | # endif |
0f113f3e MC |
890 | default: |
891 | return -1; | |
892 | } | |
893 | } | |
8a97a330 | 894 | |
0f113f3e | 895 | static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher = { |
5158c763 | 896 | # ifdef NID_aes_128_cbc_hmac_sha256 |
0f113f3e | 897 | NID_aes_128_cbc_hmac_sha256, |
5158c763 | 898 | # else |
0f113f3e | 899 | NID_undef, |
5158c763 | 900 | # endif |
936166af | 901 | AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE, |
0f113f3e MC |
902 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | |
903 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
904 | aesni_cbc_hmac_sha256_init_key, | |
905 | aesni_cbc_hmac_sha256_cipher, | |
906 | NULL, | |
907 | sizeof(EVP_AES_HMAC_SHA256), | |
908 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
909 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
910 | aesni_cbc_hmac_sha256_ctrl, | |
911 | NULL | |
912 | }; | |
913 | ||
914 | static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher = { | |
5158c763 | 915 | # ifdef NID_aes_256_cbc_hmac_sha256 |
0f113f3e | 916 | NID_aes_256_cbc_hmac_sha256, |
5158c763 | 917 | # else |
0f113f3e | 918 | NID_undef, |
5158c763 | 919 | # endif |
936166af | 920 | AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE, |
0f113f3e MC |
921 | EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 | |
922 | EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK, | |
923 | aesni_cbc_hmac_sha256_init_key, | |
924 | aesni_cbc_hmac_sha256_cipher, | |
925 | NULL, | |
926 | sizeof(EVP_AES_HMAC_SHA256), | |
927 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv, | |
928 | EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv, | |
929 | aesni_cbc_hmac_sha256_ctrl, | |
930 | NULL | |
931 | }; | |
8a97a330 AP |
932 | |
933 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) | |
0f113f3e MC |
934 | { |
935 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
936 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
937 | &aesni_128_cbc_hmac_sha256_cipher : NULL); | |
938 | } | |
8a97a330 AP |
939 | |
940 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) | |
0f113f3e MC |
941 | { |
942 | return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) && | |
943 | aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ? | |
944 | &aesni_256_cbc_hmac_sha256_cipher : NULL); | |
945 | } | |
5158c763 | 946 | #else |
8a97a330 | 947 | const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void) |
0f113f3e MC |
948 | { |
949 | return NULL; | |
950 | } | |
951 | ||
8a97a330 | 952 | const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void) |
0f113f3e MC |
953 | { |
954 | return NULL; | |
955 | } | |
8a97a330 | 956 | #endif |