source: EcnlProtoTool/trunk/openssl-1.1.0e/crypto/evp/e_aes_cbc_hmac_sha1.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago

prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新
ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新
以下のOSSをアップデート
・mruby-1.3.0
・musl-1.1.18
・onigmo-6.1.3
・tcc-0.9.27
以下のOSSを追加
・openssl-1.1.0e
・curl-7.57.0
・zlib-1.2.11
以下のmrbgemsを追加
・iij/mruby-digest
・iij/mruby-env
・iij/mruby-errno
・iij/mruby-iijson
・iij/mruby-ipaddr
・iij/mruby-mock
・iij/mruby-require
・iij/mruby-tls-openssl
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 30.7 KB
Line 
1/*
2 * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#include <openssl/opensslconf.h>
11
12#include <stdio.h>
13#include <string.h>
14
15#include <openssl/evp.h>
16#include <openssl/objects.h>
17#include <openssl/aes.h>
18#include <openssl/sha.h>
19#include <openssl/rand.h>
20#include "../modes/modes_lcl.h"
21#include "internal/evp_int.h"
22#include "internal/constant_time_locl.h"
23
24typedef struct {
25 AES_KEY ks;
26 SHA_CTX head, tail, md;
27 size_t payload_length; /* AAD length in decrypt case */
28 union {
29 unsigned int tls_ver;
30 unsigned char tls_aad[16]; /* 13 used */
31 } aux;
32} EVP_AES_HMAC_SHA1;
33
34#define NO_PAYLOAD_LENGTH ((size_t)-1)
35
36#if defined(AES_ASM) && ( \
37 defined(__x86_64) || defined(__x86_64__) || \
38 defined(_M_AMD64) || defined(_M_X64) )
39
40extern unsigned int OPENSSL_ia32cap_P[];
41# define AESNI_CAPABLE (1<<(57-32))
42
43int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
44 AES_KEY *key);
45int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
46 AES_KEY *key);
47
48void aesni_cbc_encrypt(const unsigned char *in,
49 unsigned char *out,
50 size_t length,
51 const AES_KEY *key, unsigned char *ivec, int enc);
52
53void aesni_cbc_sha1_enc(const void *inp, void *out, size_t blocks,
54 const AES_KEY *key, unsigned char iv[16],
55 SHA_CTX *ctx, const void *in0);
56
57void aesni256_cbc_sha1_dec(const void *inp, void *out, size_t blocks,
58 const AES_KEY *key, unsigned char iv[16],
59 SHA_CTX *ctx, const void *in0);
60
61# define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
62
63static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
64 const unsigned char *inkey,
65 const unsigned char *iv, int enc)
66{
67 EVP_AES_HMAC_SHA1 *key = data(ctx);
68 int ret;
69
70 if (enc)
71 ret = aesni_set_encrypt_key(inkey,
72 EVP_CIPHER_CTX_key_length(ctx) * 8,
73 &key->ks);
74 else
75 ret = aesni_set_decrypt_key(inkey,
76 EVP_CIPHER_CTX_key_length(ctx) * 8,
77 &key->ks);
78
79 SHA1_Init(&key->head); /* handy when benchmarking */
80 key->tail = key->head;
81 key->md = key->head;
82
83 key->payload_length = NO_PAYLOAD_LENGTH;
84
85 return ret < 0 ? 0 : 1;
86}
87
88# define STITCHED_CALL
89# undef STITCHED_DECRYPT_CALL
90
91# if !defined(STITCHED_CALL)
92# define aes_off 0
93# endif
94
95void sha1_block_data_order(void *c, const void *p, size_t len);
96
97static void sha1_update(SHA_CTX *c, const void *data, size_t len)
98{
99 const unsigned char *ptr = data;
100 size_t res;
101
102 if ((res = c->num)) {
103 res = SHA_CBLOCK - res;
104 if (len < res)
105 res = len;
106 SHA1_Update(c, ptr, res);
107 ptr += res;
108 len -= res;
109 }
110
111 res = len % SHA_CBLOCK;
112 len -= res;
113
114 if (len) {
115 sha1_block_data_order(c, ptr, len / SHA_CBLOCK);
116
117 ptr += len;
118 c->Nh += len >> 29;
119 c->Nl += len <<= 3;
120 if (c->Nl < (unsigned int)len)
121 c->Nh++;
122 }
123
124 if (res)
125 SHA1_Update(c, ptr, res);
126}
127
128# ifdef SHA1_Update
129# undef SHA1_Update
130# endif
131# define SHA1_Update sha1_update
132
133# if !defined(OPENSSL_NO_MULTIBLOCK)
134
135typedef struct {
136 unsigned int A[8], B[8], C[8], D[8], E[8];
137} SHA1_MB_CTX;
138typedef struct {
139 const unsigned char *ptr;
140 int blocks;
141} HASH_DESC;
142
143void sha1_multi_block(SHA1_MB_CTX *, const HASH_DESC *, int);
144
145typedef struct {
146 const unsigned char *inp;
147 unsigned char *out;
148 int blocks;
149 u64 iv[2];
150} CIPH_DESC;
151
152void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
153
154static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
155 unsigned char *out,
156 const unsigned char *inp,
157 size_t inp_len, int n4x)
158{ /* n4x is 1 or 2 */
159 HASH_DESC hash_d[8], edges[8];
160 CIPH_DESC ciph_d[8];
161 unsigned char storage[sizeof(SHA1_MB_CTX) + 32];
162 union {
163 u64 q[16];
164 u32 d[32];
165 u8 c[128];
166 } blocks[8];
167 SHA1_MB_CTX *ctx;
168 unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
169 0;
170 size_t ret = 0;
171 u8 *IVs;
172# if defined(BSWAP8)
173 u64 seqnum;
174# endif
175
176 /* ask for IVs in bulk */
177 if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
178 return 0;
179
180 ctx = (SHA1_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */
181
182 frag = (unsigned int)inp_len >> (1 + n4x);
183 last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
184 if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
185 frag++;
186 last -= x4 - 1;
187 }
188
189 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
190
191 /* populate descriptors with pointers and IVs */
192 hash_d[0].ptr = inp;
193 ciph_d[0].inp = inp;
194 /* 5+16 is place for header and explicit IV */
195 ciph_d[0].out = out + 5 + 16;
196 memcpy(ciph_d[0].out - 16, IVs, 16);
197 memcpy(ciph_d[0].iv, IVs, 16);
198 IVs += 16;
199
200 for (i = 1; i < x4; i++) {
201 ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
202 ciph_d[i].out = ciph_d[i - 1].out + packlen;
203 memcpy(ciph_d[i].out - 16, IVs, 16);
204 memcpy(ciph_d[i].iv, IVs, 16);
205 IVs += 16;
206 }
207
208# if defined(BSWAP8)
209 memcpy(blocks[0].c, key->md.data, 8);
210 seqnum = BSWAP8(blocks[0].q[0]);
211# endif
212 for (i = 0; i < x4; i++) {
213 unsigned int len = (i == (x4 - 1) ? last : frag);
214# if !defined(BSWAP8)
215 unsigned int carry, j;
216# endif
217
218 ctx->A[i] = key->md.h0;
219 ctx->B[i] = key->md.h1;
220 ctx->C[i] = key->md.h2;
221 ctx->D[i] = key->md.h3;
222 ctx->E[i] = key->md.h4;
223
224 /* fix seqnum */
225# if defined(BSWAP8)
226 blocks[i].q[0] = BSWAP8(seqnum + i);
227# else
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 }
232# endif
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 sha1_multi_block(ctx, edges, n4x);
250 /* hash bulk inputs */
251# define MAXCHUNKSIZE 2048
252# if MAXCHUNKSIZE%64
253# error "MAXCHUNKSIZE is not divisible by 64"
254# elif MAXCHUNKSIZE
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 sha1_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 }
283# endif
284# undef MAXCHUNKSIZE
285 sha1_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)) {
299# ifdef BSWAP4
300 blocks[i].d[15] = BSWAP4(len);
301# else
302 PUTU32(blocks[i].c + 60, len);
303# endif
304 edges[i].blocks = 1;
305 } else {
306# ifdef BSWAP4
307 blocks[i].d[31] = BSWAP4(len);
308# else
309 PUTU32(blocks[i].c + 124, len);
310# endif
311 edges[i].blocks = 2;
312 }
313 edges[i].ptr = blocks[i].c;
314 }
315
316 /* hash input tails and finalize */
317 sha1_multi_block(ctx, edges, n4x);
318
319 memset(blocks, 0, sizeof(blocks));
320 for (i = 0; i < x4; i++) {
321# ifdef BSWAP4
322 blocks[i].d[0] = BSWAP4(ctx->A[i]);
323 ctx->A[i] = key->tail.h0;
324 blocks[i].d[1] = BSWAP4(ctx->B[i]);
325 ctx->B[i] = key->tail.h1;
326 blocks[i].d[2] = BSWAP4(ctx->C[i]);
327 ctx->C[i] = key->tail.h2;
328 blocks[i].d[3] = BSWAP4(ctx->D[i]);
329 ctx->D[i] = key->tail.h3;
330 blocks[i].d[4] = BSWAP4(ctx->E[i]);
331 ctx->E[i] = key->tail.h4;
332 blocks[i].c[20] = 0x80;
333 blocks[i].d[15] = BSWAP4((64 + 20) * 8);
334# else
335 PUTU32(blocks[i].c + 0, ctx->A[i]);
336 ctx->A[i] = key->tail.h0;
337 PUTU32(blocks[i].c + 4, ctx->B[i]);
338 ctx->B[i] = key->tail.h1;
339 PUTU32(blocks[i].c + 8, ctx->C[i]);
340 ctx->C[i] = key->tail.h2;
341 PUTU32(blocks[i].c + 12, ctx->D[i]);
342 ctx->D[i] = key->tail.h3;
343 PUTU32(blocks[i].c + 16, ctx->E[i]);
344 ctx->E[i] = key->tail.h4;
345 blocks[i].c[20] = 0x80;
346 PUTU32(blocks[i].c + 60, (64 + 20) * 8);
347# endif
348 edges[i].ptr = blocks[i].c;
349 edges[i].blocks = 1;
350 }
351
352 /* finalize MACs */
353 sha1_multi_block(ctx, edges, n4x);
354
355 for (i = 0; i < x4; i++) {
356 unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
357 unsigned char *out0 = out;
358
359 memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
360 ciph_d[i].inp = ciph_d[i].out;
361
362 out += 5 + 16 + len;
363
364 /* write MAC */
365 PUTU32(out + 0, ctx->A[i]);
366 PUTU32(out + 4, ctx->B[i]);
367 PUTU32(out + 8, ctx->C[i]);
368 PUTU32(out + 12, ctx->D[i]);
369 PUTU32(out + 16, ctx->E[i]);
370 out += 20;
371 len += 20;
372
373 /* pad */
374 pad = 15 - len % 16;
375 for (j = 0; j <= pad; j++)
376 *(out++) = pad;
377 len += pad + 1;
378
379 ciph_d[i].blocks = (len - processed) / 16;
380 len += 16; /* account for explicit iv */
381
382 /* arrange header */
383 out0[0] = ((u8 *)key->md.data)[8];
384 out0[1] = ((u8 *)key->md.data)[9];
385 out0[2] = ((u8 *)key->md.data)[10];
386 out0[3] = (u8)(len >> 8);
387 out0[4] = (u8)(len);
388
389 ret += len + 5;
390 inp += frag;
391 }
392
393 aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
394
395 OPENSSL_cleanse(blocks, sizeof(blocks));
396 OPENSSL_cleanse(ctx, sizeof(*ctx));
397
398 return ret;
399}
400# endif
401
402static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
403 const unsigned char *in, size_t len)
404{
405 EVP_AES_HMAC_SHA1 *key = data(ctx);
406 unsigned int l;
407 size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
408 * later */
409 sha_off = 0;
410# if defined(STITCHED_CALL)
411 size_t aes_off = 0, blocks;
412
413 sha_off = SHA_CBLOCK - key->md.num;
414# endif
415
416 key->payload_length = NO_PAYLOAD_LENGTH;
417
418 if (len % AES_BLOCK_SIZE)
419 return 0;
420
421 if (EVP_CIPHER_CTX_encrypting(ctx)) {
422 if (plen == NO_PAYLOAD_LENGTH)
423 plen = len;
424 else if (len !=
425 ((plen + SHA_DIGEST_LENGTH +
426 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
427 return 0;
428 else if (key->aux.tls_ver >= TLS1_1_VERSION)
429 iv = AES_BLOCK_SIZE;
430
431# if defined(STITCHED_CALL)
432 if (plen > (sha_off + iv)
433 && (blocks = (plen - (sha_off + iv)) / SHA_CBLOCK)) {
434 SHA1_Update(&key->md, in + iv, sha_off);
435
436 aesni_cbc_sha1_enc(in, out, blocks, &key->ks,
437 EVP_CIPHER_CTX_iv_noconst(ctx),
438 &key->md, in + iv + sha_off);
439 blocks *= SHA_CBLOCK;
440 aes_off += blocks;
441 sha_off += blocks;
442 key->md.Nh += blocks >> 29;
443 key->md.Nl += blocks <<= 3;
444 if (key->md.Nl < (unsigned int)blocks)
445 key->md.Nh++;
446 } else {
447 sha_off = 0;
448 }
449# endif
450 sha_off += iv;
451 SHA1_Update(&key->md, in + sha_off, plen - sha_off);
452
453 if (plen != len) { /* "TLS" mode of operation */
454 if (in != out)
455 memcpy(out + aes_off, in + aes_off, plen - aes_off);
456
457 /* calculate HMAC and append it to payload */
458 SHA1_Final(out + plen, &key->md);
459 key->md = key->tail;
460 SHA1_Update(&key->md, out + plen, SHA_DIGEST_LENGTH);
461 SHA1_Final(out + plen, &key->md);
462
463 /* pad the payload|hmac */
464 plen += SHA_DIGEST_LENGTH;
465 for (l = len - plen - 1; plen < len; plen++)
466 out[plen] = l;
467 /* encrypt HMAC|padding at once */
468 aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
469 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
470 } else {
471 aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
472 &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
473 }
474 } else {
475 union {
476 unsigned int u[SHA_DIGEST_LENGTH / sizeof(unsigned int)];
477 unsigned char c[32 + SHA_DIGEST_LENGTH];
478 } mac, *pmac;
479
480 /* arrange cache line alignment */
481 pmac = (void *)(((size_t)mac.c + 31) & ((size_t)0 - 32));
482
483 if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
484 size_t inp_len, mask, j, i;
485 unsigned int res, maxpad, pad, bitlen;
486 int ret = 1;
487 union {
488 unsigned int u[SHA_LBLOCK];
489 unsigned char c[SHA_CBLOCK];
490 } *data = (void *)key->md.data;
491# if defined(STITCHED_DECRYPT_CALL)
492 unsigned char tail_iv[AES_BLOCK_SIZE];
493 int stitch = 0;
494# endif
495
496 if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
497 >= TLS1_1_VERSION) {
498 if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
499 return 0;
500
501 /* omit explicit iv */
502 memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), in, AES_BLOCK_SIZE);
503
504 in += AES_BLOCK_SIZE;
505 out += AES_BLOCK_SIZE;
506 len -= AES_BLOCK_SIZE;
507 } else if (len < (SHA_DIGEST_LENGTH + 1))
508 return 0;
509
510# if defined(STITCHED_DECRYPT_CALL)
511 if (len >= 1024 && ctx->key_len == 32) {
512 /* decrypt last block */
513 memcpy(tail_iv, in + len - 2 * AES_BLOCK_SIZE,
514 AES_BLOCK_SIZE);
515 aesni_cbc_encrypt(in + len - AES_BLOCK_SIZE,
516 out + len - AES_BLOCK_SIZE, AES_BLOCK_SIZE,
517 &key->ks, tail_iv, 0);
518 stitch = 1;
519 } else
520# endif
521 /* decrypt HMAC|padding at once */
522 aesni_cbc_encrypt(in, out, len, &key->ks,
523 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
524
525 /* figure out payload length */
526 pad = out[len - 1];
527 maxpad = len - (SHA_DIGEST_LENGTH + 1);
528 maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
529 maxpad &= 255;
530
531 ret &= constant_time_ge(maxpad, pad);
532
533 inp_len = len - (SHA_DIGEST_LENGTH + pad + 1);
534 mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1)));
535 inp_len &= mask;
536 ret &= (int)mask;
537
538 key->aux.tls_aad[plen - 2] = inp_len >> 8;
539 key->aux.tls_aad[plen - 1] = inp_len;
540
541 /* calculate HMAC */
542 key->md = key->head;
543 SHA1_Update(&key->md, key->aux.tls_aad, plen);
544
545# if defined(STITCHED_DECRYPT_CALL)
546 if (stitch) {
547 blocks = (len - (256 + 32 + SHA_CBLOCK)) / SHA_CBLOCK;
548 aes_off = len - AES_BLOCK_SIZE - blocks * SHA_CBLOCK;
549 sha_off = SHA_CBLOCK - plen;
550
551 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
552
553 SHA1_Update(&key->md, out, sha_off);
554 aesni256_cbc_sha1_dec(in + aes_off,
555 out + aes_off, blocks, &key->ks,
556 ctx->iv, &key->md, out + sha_off);
557
558 sha_off += blocks *= SHA_CBLOCK;
559 out += sha_off;
560 len -= sha_off;
561 inp_len -= sha_off;
562
563 key->md.Nl += (blocks << 3); /* at most 18 bits */
564 memcpy(ctx->iv, tail_iv, AES_BLOCK_SIZE);
565 }
566# endif
567
568# if 1
569 len -= SHA_DIGEST_LENGTH; /* amend mac */
570 if (len >= (256 + SHA_CBLOCK)) {
571 j = (len - (256 + SHA_CBLOCK)) & (0 - SHA_CBLOCK);
572 j += SHA_CBLOCK - key->md.num;
573 SHA1_Update(&key->md, out, j);
574 out += j;
575 len -= j;
576 inp_len -= j;
577 }
578
579 /* but pretend as if we hashed padded payload */
580 bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */
581# ifdef BSWAP4
582 bitlen = BSWAP4(bitlen);
583# else
584 mac.c[0] = 0;
585 mac.c[1] = (unsigned char)(bitlen >> 16);
586 mac.c[2] = (unsigned char)(bitlen >> 8);
587 mac.c[3] = (unsigned char)bitlen;
588 bitlen = mac.u[0];
589# endif
590
591 pmac->u[0] = 0;
592 pmac->u[1] = 0;
593 pmac->u[2] = 0;
594 pmac->u[3] = 0;
595 pmac->u[4] = 0;
596
597 for (res = key->md.num, j = 0; j < len; j++) {
598 size_t c = out[j];
599 mask = (j - inp_len) >> (sizeof(j) * 8 - 8);
600 c &= mask;
601 c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8));
602 data->c[res++] = (unsigned char)c;
603
604 if (res != SHA_CBLOCK)
605 continue;
606
607 /* j is not incremented yet */
608 mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
609 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
610 sha1_block_data_order(&key->md, data, 1);
611 mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
612 pmac->u[0] |= key->md.h0 & mask;
613 pmac->u[1] |= key->md.h1 & mask;
614 pmac->u[2] |= key->md.h2 & mask;
615 pmac->u[3] |= key->md.h3 & mask;
616 pmac->u[4] |= key->md.h4 & mask;
617 res = 0;
618 }
619
620 for (i = res; i < SHA_CBLOCK; i++, j++)
621 data->c[i] = 0;
622
623 if (res > SHA_CBLOCK - 8) {
624 mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
625 data->u[SHA_LBLOCK - 1] |= bitlen & mask;
626 sha1_block_data_order(&key->md, data, 1);
627 mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
628 pmac->u[0] |= key->md.h0 & mask;
629 pmac->u[1] |= key->md.h1 & mask;
630 pmac->u[2] |= key->md.h2 & mask;
631 pmac->u[3] |= key->md.h3 & mask;
632 pmac->u[4] |= key->md.h4 & mask;
633
634 memset(data, 0, SHA_CBLOCK);
635 j += 64;
636 }
637 data->u[SHA_LBLOCK - 1] = bitlen;
638 sha1_block_data_order(&key->md, data, 1);
639 mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
640 pmac->u[0] |= key->md.h0 & mask;
641 pmac->u[1] |= key->md.h1 & mask;
642 pmac->u[2] |= key->md.h2 & mask;
643 pmac->u[3] |= key->md.h3 & mask;
644 pmac->u[4] |= key->md.h4 & mask;
645
646# ifdef BSWAP4
647 pmac->u[0] = BSWAP4(pmac->u[0]);
648 pmac->u[1] = BSWAP4(pmac->u[1]);
649 pmac->u[2] = BSWAP4(pmac->u[2]);
650 pmac->u[3] = BSWAP4(pmac->u[3]);
651 pmac->u[4] = BSWAP4(pmac->u[4]);
652# else
653 for (i = 0; i < 5; i++) {
654 res = pmac->u[i];
655 pmac->c[4 * i + 0] = (unsigned char)(res >> 24);
656 pmac->c[4 * i + 1] = (unsigned char)(res >> 16);
657 pmac->c[4 * i + 2] = (unsigned char)(res >> 8);
658 pmac->c[4 * i + 3] = (unsigned char)res;
659 }
660# endif
661 len += SHA_DIGEST_LENGTH;
662# else
663 SHA1_Update(&key->md, out, inp_len);
664 res = key->md.num;
665 SHA1_Final(pmac->c, &key->md);
666
667 {
668 unsigned int inp_blocks, pad_blocks;
669
670 /* but pretend as if we hashed padded payload */
671 inp_blocks =
672 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
673 res += (unsigned int)(len - inp_len);
674 pad_blocks = res / SHA_CBLOCK;
675 res %= SHA_CBLOCK;
676 pad_blocks +=
677 1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
678 for (; inp_blocks < pad_blocks; inp_blocks++)
679 sha1_block_data_order(&key->md, data, 1);
680 }
681# endif
682 key->md = key->tail;
683 SHA1_Update(&key->md, pmac->c, SHA_DIGEST_LENGTH);
684 SHA1_Final(pmac->c, &key->md);
685
686 /* verify HMAC */
687 out += inp_len;
688 len -= inp_len;
689# if 1
690 {
691 unsigned char *p = out + len - 1 - maxpad - SHA_DIGEST_LENGTH;
692 size_t off = out - p;
693 unsigned int c, cmask;
694
695 maxpad += SHA_DIGEST_LENGTH;
696 for (res = 0, i = 0, j = 0; j < maxpad; j++) {
697 c = p[j];
698 cmask =
699 ((int)(j - off - SHA_DIGEST_LENGTH)) >> (sizeof(int) *
700 8 - 1);
701 res |= (c ^ pad) & ~cmask; /* ... and padding */
702 cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1);
703 res |= (c ^ pmac->c[i]) & cmask;
704 i += 1 & cmask;
705 }
706 maxpad -= SHA_DIGEST_LENGTH;
707
708 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
709 ret &= (int)~res;
710 }
711# else
712 for (res = 0, i = 0; i < SHA_DIGEST_LENGTH; i++)
713 res |= out[i] ^ pmac->c[i];
714 res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
715 ret &= (int)~res;
716
717 /* verify padding */
718 pad = (pad & ~res) | (maxpad & res);
719 out = out + len - 1 - pad;
720 for (res = 0, i = 0; i < pad; i++)
721 res |= out[i] ^ pad;
722
723 res = (0 - res) >> (sizeof(res) * 8 - 1);
724 ret &= (int)~res;
725# endif
726 return ret;
727 } else {
728# if defined(STITCHED_DECRYPT_CALL)
729 if (len >= 1024 && ctx->key_len == 32) {
730 if (sha_off %= SHA_CBLOCK)
731 blocks = (len - 3 * SHA_CBLOCK) / SHA_CBLOCK;
732 else
733 blocks = (len - 2 * SHA_CBLOCK) / SHA_CBLOCK;
734 aes_off = len - blocks * SHA_CBLOCK;
735
736 aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
737 SHA1_Update(&key->md, out, sha_off);
738 aesni256_cbc_sha1_dec(in + aes_off,
739 out + aes_off, blocks, &key->ks,
740 ctx->iv, &key->md, out + sha_off);
741
742 sha_off += blocks *= SHA_CBLOCK;
743 out += sha_off;
744 len -= sha_off;
745
746 key->md.Nh += blocks >> 29;
747 key->md.Nl += blocks <<= 3;
748 if (key->md.Nl < (unsigned int)blocks)
749 key->md.Nh++;
750 } else
751# endif
752 /* decrypt HMAC|padding at once */
753 aesni_cbc_encrypt(in, out, len, &key->ks,
754 EVP_CIPHER_CTX_iv_noconst(ctx), 0);
755
756 SHA1_Update(&key->md, out, len);
757 }
758 }
759
760 return 1;
761}
762
763static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
764 void *ptr)
765{
766 EVP_AES_HMAC_SHA1 *key = data(ctx);
767
768 switch (type) {
769 case EVP_CTRL_AEAD_SET_MAC_KEY:
770 {
771 unsigned int i;
772 unsigned char hmac_key[64];
773
774 memset(hmac_key, 0, sizeof(hmac_key));
775
776 if (arg > (int)sizeof(hmac_key)) {
777 SHA1_Init(&key->head);
778 SHA1_Update(&key->head, ptr, arg);
779 SHA1_Final(hmac_key, &key->head);
780 } else {
781 memcpy(hmac_key, ptr, arg);
782 }
783
784 for (i = 0; i < sizeof(hmac_key); i++)
785 hmac_key[i] ^= 0x36; /* ipad */
786 SHA1_Init(&key->head);
787 SHA1_Update(&key->head, hmac_key, sizeof(hmac_key));
788
789 for (i = 0; i < sizeof(hmac_key); i++)
790 hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
791 SHA1_Init(&key->tail);
792 SHA1_Update(&key->tail, hmac_key, sizeof(hmac_key));
793
794 OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
795
796 return 1;
797 }
798 case EVP_CTRL_AEAD_TLS1_AAD:
799 {
800 unsigned char *p = ptr;
801 unsigned int len;
802
803 if (arg != EVP_AEAD_TLS1_AAD_LEN)
804 return -1;
805
806 len = p[arg - 2] << 8 | p[arg - 1];
807
808 if (EVP_CIPHER_CTX_encrypting(ctx)) {
809 key->payload_length = len;
810 if ((key->aux.tls_ver =
811 p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
812 len -= AES_BLOCK_SIZE;
813 p[arg - 2] = len >> 8;
814 p[arg - 1] = len;
815 }
816 key->md = key->head;
817 SHA1_Update(&key->md, p, arg);
818
819 return (int)(((len + SHA_DIGEST_LENGTH +
820 AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
821 - len);
822 } else {
823 memcpy(key->aux.tls_aad, ptr, arg);
824 key->payload_length = arg;
825
826 return SHA_DIGEST_LENGTH;
827 }
828 }
829# if !defined(OPENSSL_NO_MULTIBLOCK)
830 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
831 return (int)(5 + 16 + ((arg + 20 + 16) & -16));
832 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
833 {
834 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
835 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
836 unsigned int n4x = 1, x4;
837 unsigned int frag, last, packlen, inp_len;
838
839 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
840 return -1;
841
842 inp_len = param->inp[11] << 8 | param->inp[12];
843
844 if (EVP_CIPHER_CTX_encrypting(ctx)) {
845 if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION)
846 return -1;
847
848 if (inp_len) {
849 if (inp_len < 4096)
850 return 0; /* too short */
851
852 if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5))
853 n4x = 2; /* AVX2 */
854 } else if ((n4x = param->interleave / 4) && n4x <= 2)
855 inp_len = param->len;
856 else
857 return -1;
858
859 key->md = key->head;
860 SHA1_Update(&key->md, param->inp, 13);
861
862 x4 = 4 * n4x;
863 n4x += 1;
864
865 frag = inp_len >> n4x;
866 last = inp_len + frag - (frag << n4x);
867 if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) {
868 frag++;
869 last -= x4 - 1;
870 }
871
872 packlen = 5 + 16 + ((frag + 20 + 16) & -16);
873 packlen = (packlen << n4x) - packlen;
874 packlen += 5 + 16 + ((last + 20 + 16) & -16);
875
876 param->interleave = x4;
877
878 return (int)packlen;
879 } else
880 return -1; /* not yet */
881 }
882 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
883 {
884 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
885 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
886
887 return (int)tls1_1_multi_block_encrypt(key, param->out,
888 param->inp, param->len,
889 param->interleave / 4);
890 }
891 case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
892# endif
893 default:
894 return -1;
895 }
896}
897
898static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher = {
899# ifdef NID_aes_128_cbc_hmac_sha1
900 NID_aes_128_cbc_hmac_sha1,
901# else
902 NID_undef,
903# endif
904 AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE,
905 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
906 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
907 aesni_cbc_hmac_sha1_init_key,
908 aesni_cbc_hmac_sha1_cipher,
909 NULL,
910 sizeof(EVP_AES_HMAC_SHA1),
911 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
912 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
913 aesni_cbc_hmac_sha1_ctrl,
914 NULL
915};
916
917static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher = {
918# ifdef NID_aes_256_cbc_hmac_sha1
919 NID_aes_256_cbc_hmac_sha1,
920# else
921 NID_undef,
922# endif
923 AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE,
924 EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
925 EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
926 aesni_cbc_hmac_sha1_init_key,
927 aesni_cbc_hmac_sha1_cipher,
928 NULL,
929 sizeof(EVP_AES_HMAC_SHA1),
930 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
931 EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
932 aesni_cbc_hmac_sha1_ctrl,
933 NULL
934};
935
936const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
937{
938 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
939 &aesni_128_cbc_hmac_sha1_cipher : NULL);
940}
941
942const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
943{
944 return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
945 &aesni_256_cbc_hmac_sha1_cipher : NULL);
946}
947#else
948const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
949{
950 return NULL;
951}
952
953const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
954{
955 return NULL;
956}
957#endif
Note: See TracBrowser for help on using the repository browser.