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diff --git a/src/lib/libcrypto/evp/e_aes.c b/src/lib/libcrypto/evp/e_aes.c
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1/* ====================================================================
2 * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
20 *
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
25 *
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
29 *
30 * 6. Redistributions of any form whatsoever must retain the following
31 * acknowledgment:
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
34 *
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
48 *
49 */
50
51#include <openssl/opensslconf.h>
52#ifndef OPENSSL_NO_AES
53#include <openssl/evp.h>
54#include <openssl/err.h>
55#include <string.h>
56#include <assert.h>
57#include <openssl/aes.h>
58#include "evp_locl.h"
59#ifndef OPENSSL_FIPS
60#include "modes_lcl.h"
61#include <openssl/rand.h>
62
63typedef struct
64 {
65 AES_KEY ks;
66 block128_f block;
67 union {
68 cbc128_f cbc;
69 ctr128_f ctr;
70 } stream;
71 } EVP_AES_KEY;
72
73typedef struct
74 {
75 AES_KEY ks; /* AES key schedule to use */
76 int key_set; /* Set if key initialised */
77 int iv_set; /* Set if an iv is set */
78 GCM128_CONTEXT gcm;
79 unsigned char *iv; /* Temporary IV store */
80 int ivlen; /* IV length */
81 int taglen;
82 int iv_gen; /* It is OK to generate IVs */
83 int tls_aad_len; /* TLS AAD length */
84 ctr128_f ctr;
85 } EVP_AES_GCM_CTX;
86
87typedef struct
88 {
89 AES_KEY ks1, ks2; /* AES key schedules to use */
90 XTS128_CONTEXT xts;
91 void (*stream)(const unsigned char *in,
92 unsigned char *out, size_t length,
93 const AES_KEY *key1, const AES_KEY *key2,
94 const unsigned char iv[16]);
95 } EVP_AES_XTS_CTX;
96
97typedef struct
98 {
99 AES_KEY ks; /* AES key schedule to use */
100 int key_set; /* Set if key initialised */
101 int iv_set; /* Set if an iv is set */
102 int tag_set; /* Set if tag is valid */
103 int len_set; /* Set if message length set */
104 int L, M; /* L and M parameters from RFC3610 */
105 CCM128_CONTEXT ccm;
106 ccm128_f str;
107 } EVP_AES_CCM_CTX;
108
109#define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
110
111#ifdef VPAES_ASM
112int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
113 AES_KEY *key);
114int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
115 AES_KEY *key);
116
117void vpaes_encrypt(const unsigned char *in, unsigned char *out,
118 const AES_KEY *key);
119void vpaes_decrypt(const unsigned char *in, unsigned char *out,
120 const AES_KEY *key);
121
122void vpaes_cbc_encrypt(const unsigned char *in,
123 unsigned char *out,
124 size_t length,
125 const AES_KEY *key,
126 unsigned char *ivec, int enc);
127#endif
128#ifdef BSAES_ASM
129void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
130 size_t length, const AES_KEY *key,
131 unsigned char ivec[16], int enc);
132void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
133 size_t len, const AES_KEY *key,
134 const unsigned char ivec[16]);
135void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
136 size_t len, const AES_KEY *key1,
137 const AES_KEY *key2, const unsigned char iv[16]);
138void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
139 size_t len, const AES_KEY *key1,
140 const AES_KEY *key2, const unsigned char iv[16]);
141#endif
142#ifdef AES_CTR_ASM
143void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
144 size_t blocks, const AES_KEY *key,
145 const unsigned char ivec[AES_BLOCK_SIZE]);
146#endif
147#ifdef AES_XTS_ASM
148void AES_xts_encrypt(const char *inp,char *out,size_t len,
149 const AES_KEY *key1, const AES_KEY *key2,
150 const unsigned char iv[16]);
151void AES_xts_decrypt(const char *inp,char *out,size_t len,
152 const AES_KEY *key1, const AES_KEY *key2,
153 const unsigned char iv[16]);
154#endif
155
156#if defined(AES_ASM) && !defined(I386_ONLY) && ( \
157 ((defined(__i386) || defined(__i386__) || \
158 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
159 defined(__x86_64) || defined(__x86_64__) || \
160 defined(_M_AMD64) || defined(_M_X64) || \
161 defined(__INTEL__) )
162
163extern unsigned int OPENSSL_ia32cap_P[2];
164
165#ifdef VPAES_ASM
166#define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
167#endif
168#ifdef BSAES_ASM
169#define BSAES_CAPABLE VPAES_CAPABLE
170#endif
171/*
172 * AES-NI section
173 */
174#define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
175
176int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
177 AES_KEY *key);
178int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
179 AES_KEY *key);
180
181void aesni_encrypt(const unsigned char *in, unsigned char *out,
182 const AES_KEY *key);
183void aesni_decrypt(const unsigned char *in, unsigned char *out,
184 const AES_KEY *key);
185
186void aesni_ecb_encrypt(const unsigned char *in,
187 unsigned char *out,
188 size_t length,
189 const AES_KEY *key,
190 int enc);
191void aesni_cbc_encrypt(const unsigned char *in,
192 unsigned char *out,
193 size_t length,
194 const AES_KEY *key,
195 unsigned char *ivec, int enc);
196
197void aesni_ctr32_encrypt_blocks(const unsigned char *in,
198 unsigned char *out,
199 size_t blocks,
200 const void *key,
201 const unsigned char *ivec);
202
203void aesni_xts_encrypt(const unsigned char *in,
204 unsigned char *out,
205 size_t length,
206 const AES_KEY *key1, const AES_KEY *key2,
207 const unsigned char iv[16]);
208
209void aesni_xts_decrypt(const unsigned char *in,
210 unsigned char *out,
211 size_t length,
212 const AES_KEY *key1, const AES_KEY *key2,
213 const unsigned char iv[16]);
214
215void aesni_ccm64_encrypt_blocks (const unsigned char *in,
216 unsigned char *out,
217 size_t blocks,
218 const void *key,
219 const unsigned char ivec[16],
220 unsigned char cmac[16]);
221
222void aesni_ccm64_decrypt_blocks (const unsigned char *in,
223 unsigned char *out,
224 size_t blocks,
225 const void *key,
226 const unsigned char ivec[16],
227 unsigned char cmac[16]);
228
229static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
230 const unsigned char *iv, int enc)
231 {
232 int ret, mode;
233 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
234
235 mode = ctx->cipher->flags & EVP_CIPH_MODE;
236 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
237 && !enc)
238 {
239 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
240 dat->block = (block128_f)aesni_decrypt;
241 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
242 (cbc128_f)aesni_cbc_encrypt :
243 NULL;
244 }
245 else {
246 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
247 dat->block = (block128_f)aesni_encrypt;
248 if (mode==EVP_CIPH_CBC_MODE)
249 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
250 else if (mode==EVP_CIPH_CTR_MODE)
251 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
252 else
253 dat->stream.cbc = NULL;
254 }
255
256 if(ret < 0)
257 {
258 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
259 return 0;
260 }
261
262 return 1;
263 }
264
265static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
266 const unsigned char *in, size_t len)
267{
268 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
269
270 return 1;
271}
272
273static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
274 const unsigned char *in, size_t len)
275{
276 size_t bl = ctx->cipher->block_size;
277
278 if (len<bl) return 1;
279
280 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
281
282 return 1;
283}
284
285#define aesni_ofb_cipher aes_ofb_cipher
286static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
287 const unsigned char *in,size_t len);
288
289#define aesni_cfb_cipher aes_cfb_cipher
290static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
291 const unsigned char *in,size_t len);
292
293#define aesni_cfb8_cipher aes_cfb8_cipher
294static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
295 const unsigned char *in,size_t len);
296
297#define aesni_cfb1_cipher aes_cfb1_cipher
298static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
299 const unsigned char *in,size_t len);
300
301#define aesni_ctr_cipher aes_ctr_cipher
302static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
303 const unsigned char *in, size_t len);
304
305static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
306 const unsigned char *iv, int enc)
307 {
308 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
309 if (!iv && !key)
310 return 1;
311 if (key)
312 {
313 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
314 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
315 (block128_f)aesni_encrypt);
316 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
317 /* If we have an iv can set it directly, otherwise use
318 * saved IV.
319 */
320 if (iv == NULL && gctx->iv_set)
321 iv = gctx->iv;
322 if (iv)
323 {
324 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
325 gctx->iv_set = 1;
326 }
327 gctx->key_set = 1;
328 }
329 else
330 {
331 /* If key set use IV, otherwise copy */
332 if (gctx->key_set)
333 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
334 else
335 memcpy(gctx->iv, iv, gctx->ivlen);
336 gctx->iv_set = 1;
337 gctx->iv_gen = 0;
338 }
339 return 1;
340 }
341
342#define aesni_gcm_cipher aes_gcm_cipher
343static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
344 const unsigned char *in, size_t len);
345
346static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
347 const unsigned char *iv, int enc)
348 {
349 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
350 if (!iv && !key)
351 return 1;
352
353 if (key)
354 {
355 /* key_len is two AES keys */
356 if (enc)
357 {
358 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
359 xctx->xts.block1 = (block128_f)aesni_encrypt;
360 xctx->stream = aesni_xts_encrypt;
361 }
362 else
363 {
364 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
365 xctx->xts.block1 = (block128_f)aesni_decrypt;
366 xctx->stream = aesni_xts_decrypt;
367 }
368
369 aesni_set_encrypt_key(key + ctx->key_len/2,
370 ctx->key_len * 4, &xctx->ks2);
371 xctx->xts.block2 = (block128_f)aesni_encrypt;
372
373 xctx->xts.key1 = &xctx->ks1;
374 }
375
376 if (iv)
377 {
378 xctx->xts.key2 = &xctx->ks2;
379 memcpy(ctx->iv, iv, 16);
380 }
381
382 return 1;
383 }
384
385#define aesni_xts_cipher aes_xts_cipher
386static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
387 const unsigned char *in, size_t len);
388
389static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
390 const unsigned char *iv, int enc)
391 {
392 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
393 if (!iv && !key)
394 return 1;
395 if (key)
396 {
397 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
398 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
399 &cctx->ks, (block128_f)aesni_encrypt);
400 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
401 (ccm128_f)aesni_ccm64_decrypt_blocks;
402 cctx->key_set = 1;
403 }
404 if (iv)
405 {
406 memcpy(ctx->iv, iv, 15 - cctx->L);
407 cctx->iv_set = 1;
408 }
409 return 1;
410 }
411
412#define aesni_ccm_cipher aes_ccm_cipher
413static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
414 const unsigned char *in, size_t len);
415
416#define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
417static const EVP_CIPHER aesni_##keylen##_##mode = { \
418 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
419 flags|EVP_CIPH_##MODE##_MODE, \
420 aesni_init_key, \
421 aesni_##mode##_cipher, \
422 NULL, \
423 sizeof(EVP_AES_KEY), \
424 NULL,NULL,NULL,NULL }; \
425static const EVP_CIPHER aes_##keylen##_##mode = { \
426 nid##_##keylen##_##nmode,blocksize, \
427 keylen/8,ivlen, \
428 flags|EVP_CIPH_##MODE##_MODE, \
429 aes_init_key, \
430 aes_##mode##_cipher, \
431 NULL, \
432 sizeof(EVP_AES_KEY), \
433 NULL,NULL,NULL,NULL }; \
434const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
435{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
436
437#define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
438static const EVP_CIPHER aesni_##keylen##_##mode = { \
439 nid##_##keylen##_##mode,blocksize, \
440 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
441 flags|EVP_CIPH_##MODE##_MODE, \
442 aesni_##mode##_init_key, \
443 aesni_##mode##_cipher, \
444 aes_##mode##_cleanup, \
445 sizeof(EVP_AES_##MODE##_CTX), \
446 NULL,NULL,aes_##mode##_ctrl,NULL }; \
447static const EVP_CIPHER aes_##keylen##_##mode = { \
448 nid##_##keylen##_##mode,blocksize, \
449 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
450 flags|EVP_CIPH_##MODE##_MODE, \
451 aes_##mode##_init_key, \
452 aes_##mode##_cipher, \
453 aes_##mode##_cleanup, \
454 sizeof(EVP_AES_##MODE##_CTX), \
455 NULL,NULL,aes_##mode##_ctrl,NULL }; \
456const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
457{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
458
459#else
460
461#define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
462static const EVP_CIPHER aes_##keylen##_##mode = { \
463 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
464 flags|EVP_CIPH_##MODE##_MODE, \
465 aes_init_key, \
466 aes_##mode##_cipher, \
467 NULL, \
468 sizeof(EVP_AES_KEY), \
469 NULL,NULL,NULL,NULL }; \
470const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
471{ return &aes_##keylen##_##mode; }
472
473#define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
474static const EVP_CIPHER aes_##keylen##_##mode = { \
475 nid##_##keylen##_##mode,blocksize, \
476 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
477 flags|EVP_CIPH_##MODE##_MODE, \
478 aes_##mode##_init_key, \
479 aes_##mode##_cipher, \
480 aes_##mode##_cleanup, \
481 sizeof(EVP_AES_##MODE##_CTX), \
482 NULL,NULL,aes_##mode##_ctrl,NULL }; \
483const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
484{ return &aes_##keylen##_##mode; }
485#endif
486
487#define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
488 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
489 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
490 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
491 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
492 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
493 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
494 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
495
496static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
497 const unsigned char *iv, int enc)
498 {
499 int ret, mode;
500 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
501
502 mode = ctx->cipher->flags & EVP_CIPH_MODE;
503 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
504 && !enc)
505#ifdef BSAES_CAPABLE
506 if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
507 {
508 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
509 dat->block = (block128_f)AES_decrypt;
510 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
511 }
512 else
513#endif
514#ifdef VPAES_CAPABLE
515 if (VPAES_CAPABLE)
516 {
517 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
518 dat->block = (block128_f)vpaes_decrypt;
519 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
520 (cbc128_f)vpaes_cbc_encrypt :
521 NULL;
522 }
523 else
524#endif
525 {
526 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
527 dat->block = (block128_f)AES_decrypt;
528 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
529 (cbc128_f)AES_cbc_encrypt :
530 NULL;
531 }
532 else
533#ifdef BSAES_CAPABLE
534 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
535 {
536 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
537 dat->block = (block128_f)AES_encrypt;
538 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
539 }
540 else
541#endif
542#ifdef VPAES_CAPABLE
543 if (VPAES_CAPABLE)
544 {
545 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
546 dat->block = (block128_f)vpaes_encrypt;
547 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
548 (cbc128_f)vpaes_cbc_encrypt :
549 NULL;
550 }
551 else
552#endif
553 {
554 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
555 dat->block = (block128_f)AES_encrypt;
556 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
557 (cbc128_f)AES_cbc_encrypt :
558 NULL;
559#ifdef AES_CTR_ASM
560 if (mode==EVP_CIPH_CTR_MODE)
561 dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
562#endif
563 }
564
565 if(ret < 0)
566 {
567 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
568 return 0;
569 }
570
571 return 1;
572 }
573
574static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
575 const unsigned char *in, size_t len)
576{
577 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
578
579 if (dat->stream.cbc)
580 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
581 else if (ctx->encrypt)
582 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
583 else
584 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
585
586 return 1;
587}
588
589static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
590 const unsigned char *in, size_t len)
591{
592 size_t bl = ctx->cipher->block_size;
593 size_t i;
594 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
595
596 if (len<bl) return 1;
597
598 for (i=0,len-=bl;i<=len;i+=bl)
599 (*dat->block)(in+i,out+i,&dat->ks);
600
601 return 1;
602}
603
604static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
605 const unsigned char *in,size_t len)
606{
607 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
608
609 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
610 ctx->iv,&ctx->num,dat->block);
611 return 1;
612}
613
614static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
615 const unsigned char *in,size_t len)
616{
617 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
618
619 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
620 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
621 return 1;
622}
623
624static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
625 const unsigned char *in,size_t len)
626{
627 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
628
629 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
630 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
631 return 1;
632}
633
634static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
635 const unsigned char *in,size_t len)
636{
637 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
638
639 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
640 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
641 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
642 return 1;
643 }
644
645 while (len>=MAXBITCHUNK) {
646 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
647 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
648 len-=MAXBITCHUNK;
649 }
650 if (len)
651 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
652 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
653
654 return 1;
655}
656
657static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
658 const unsigned char *in, size_t len)
659{
660 unsigned int num = ctx->num;
661 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
662
663 if (dat->stream.ctr)
664 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
665 ctx->iv,ctx->buf,&num,dat->stream.ctr);
666 else
667 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
668 ctx->iv,ctx->buf,&num,dat->block);
669 ctx->num = (size_t)num;
670 return 1;
671}
672
673BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
674BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
675BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
676
677static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
678 {
679 EVP_AES_GCM_CTX *gctx = c->cipher_data;
680 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
681 if (gctx->iv != c->iv)
682 OPENSSL_free(gctx->iv);
683 return 1;
684 }
685
686/* increment counter (64-bit int) by 1 */
687static void ctr64_inc(unsigned char *counter) {
688 int n=8;
689 unsigned char c;
690
691 do {
692 --n;
693 c = counter[n];
694 ++c;
695 counter[n] = c;
696 if (c) return;
697 } while (n);
698}
699
700static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
701 {
702 EVP_AES_GCM_CTX *gctx = c->cipher_data;
703 switch (type)
704 {
705 case EVP_CTRL_INIT:
706 gctx->key_set = 0;
707 gctx->iv_set = 0;
708 gctx->ivlen = c->cipher->iv_len;
709 gctx->iv = c->iv;
710 gctx->taglen = -1;
711 gctx->iv_gen = 0;
712 gctx->tls_aad_len = -1;
713 return 1;
714
715 case EVP_CTRL_GCM_SET_IVLEN:
716 if (arg <= 0)
717 return 0;
718#ifdef OPENSSL_FIPS
719 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
720 && arg < 12)
721 return 0;
722#endif
723 /* Allocate memory for IV if needed */
724 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
725 {
726 if (gctx->iv != c->iv)
727 OPENSSL_free(gctx->iv);
728 gctx->iv = OPENSSL_malloc(arg);
729 if (!gctx->iv)
730 return 0;
731 }
732 gctx->ivlen = arg;
733 return 1;
734
735 case EVP_CTRL_GCM_SET_TAG:
736 if (arg <= 0 || arg > 16 || c->encrypt)
737 return 0;
738 memcpy(c->buf, ptr, arg);
739 gctx->taglen = arg;
740 return 1;
741
742 case EVP_CTRL_GCM_GET_TAG:
743 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
744 return 0;
745 memcpy(ptr, c->buf, arg);
746 return 1;
747
748 case EVP_CTRL_GCM_SET_IV_FIXED:
749 /* Special case: -1 length restores whole IV */
750 if (arg == -1)
751 {
752 memcpy(gctx->iv, ptr, gctx->ivlen);
753 gctx->iv_gen = 1;
754 return 1;
755 }
756 /* Fixed field must be at least 4 bytes and invocation field
757 * at least 8.
758 */
759 if ((arg < 4) || (gctx->ivlen - arg) < 8)
760 return 0;
761 if (arg)
762 memcpy(gctx->iv, ptr, arg);
763 if (c->encrypt &&
764 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
765 return 0;
766 gctx->iv_gen = 1;
767 return 1;
768
769 case EVP_CTRL_GCM_IV_GEN:
770 if (gctx->iv_gen == 0 || gctx->key_set == 0)
771 return 0;
772 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
773 if (arg <= 0 || arg > gctx->ivlen)
774 arg = gctx->ivlen;
775 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
776 /* Invocation field will be at least 8 bytes in size and
777 * so no need to check wrap around or increment more than
778 * last 8 bytes.
779 */
780 ctr64_inc(gctx->iv + gctx->ivlen - 8);
781 gctx->iv_set = 1;
782 return 1;
783
784 case EVP_CTRL_GCM_SET_IV_INV:
785 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
786 return 0;
787 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
788 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
789 gctx->iv_set = 1;
790 return 1;
791
792 case EVP_CTRL_AEAD_TLS1_AAD:
793 /* Save the AAD for later use */
794 if (arg != 13)
795 return 0;
796 memcpy(c->buf, ptr, arg);
797 gctx->tls_aad_len = arg;
798 {
799 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
800 /* Correct length for explicit IV */
801 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
802 /* If decrypting correct for tag too */
803 if (!c->encrypt)
804 len -= EVP_GCM_TLS_TAG_LEN;
805 c->buf[arg-2] = len>>8;
806 c->buf[arg-1] = len & 0xff;
807 }
808 /* Extra padding: tag appended to record */
809 return EVP_GCM_TLS_TAG_LEN;
810
811 default:
812 return -1;
813
814 }
815 }
816
817static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
818 const unsigned char *iv, int enc)
819 {
820 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
821 if (!iv && !key)
822 return 1;
823 if (key)
824 { do {
825#ifdef BSAES_CAPABLE
826 if (BSAES_CAPABLE)
827 {
828 AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
829 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
830 (block128_f)AES_encrypt);
831 gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
832 break;
833 }
834 else
835#endif
836#ifdef VPAES_CAPABLE
837 if (VPAES_CAPABLE)
838 {
839 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
840 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
841 (block128_f)vpaes_encrypt);
842 gctx->ctr = NULL;
843 break;
844 }
845 else
846#endif
847 (void)0; /* terminate potentially open 'else' */
848
849 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
850 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
851#ifdef AES_CTR_ASM
852 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
853#else
854 gctx->ctr = NULL;
855#endif
856 } while (0);
857
858 /* If we have an iv can set it directly, otherwise use
859 * saved IV.
860 */
861 if (iv == NULL && gctx->iv_set)
862 iv = gctx->iv;
863 if (iv)
864 {
865 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
866 gctx->iv_set = 1;
867 }
868 gctx->key_set = 1;
869 }
870 else
871 {
872 /* If key set use IV, otherwise copy */
873 if (gctx->key_set)
874 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
875 else
876 memcpy(gctx->iv, iv, gctx->ivlen);
877 gctx->iv_set = 1;
878 gctx->iv_gen = 0;
879 }
880 return 1;
881 }
882
883/* Handle TLS GCM packet format. This consists of the last portion of the IV
884 * followed by the payload and finally the tag. On encrypt generate IV,
885 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
886 * and verify tag.
887 */
888
889static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
890 const unsigned char *in, size_t len)
891 {
892 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
893 int rv = -1;
894 /* Encrypt/decrypt must be performed in place */
895 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
896 return -1;
897 /* Set IV from start of buffer or generate IV and write to start
898 * of buffer.
899 */
900 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
901 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
902 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
903 goto err;
904 /* Use saved AAD */
905 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
906 goto err;
907 /* Fix buffer and length to point to payload */
908 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
909 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
910 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
911 if (ctx->encrypt)
912 {
913 /* Encrypt payload */
914 if (gctx->ctr)
915 {
916 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
917 in, out, len,
918 gctx->ctr))
919 goto err;
920 }
921 else {
922 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
923 goto err;
924 }
925 out += len;
926 /* Finally write tag */
927 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
928 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
929 }
930 else
931 {
932 /* Decrypt */
933 if (gctx->ctr)
934 {
935 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
936 in, out, len,
937 gctx->ctr))
938 goto err;
939 }
940 else {
941 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
942 goto err;
943 }
944 /* Retrieve tag */
945 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
946 EVP_GCM_TLS_TAG_LEN);
947 /* If tag mismatch wipe buffer */
948 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
949 {
950 OPENSSL_cleanse(out, len);
951 goto err;
952 }
953 rv = len;
954 }
955
956 err:
957 gctx->iv_set = 0;
958 gctx->tls_aad_len = -1;
959 return rv;
960 }
961
962static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
963 const unsigned char *in, size_t len)
964 {
965 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
966 /* If not set up, return error */
967 if (!gctx->key_set)
968 return -1;
969
970 if (gctx->tls_aad_len >= 0)
971 return aes_gcm_tls_cipher(ctx, out, in, len);
972
973 if (!gctx->iv_set)
974 return -1;
975 if (in)
976 {
977 if (out == NULL)
978 {
979 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
980 return -1;
981 }
982 else if (ctx->encrypt)
983 {
984 if (gctx->ctr)
985 {
986 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
987 in, out, len,
988 gctx->ctr))
989 return -1;
990 }
991 else {
992 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
993 return -1;
994 }
995 }
996 else
997 {
998 if (gctx->ctr)
999 {
1000 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1001 in, out, len,
1002 gctx->ctr))
1003 return -1;
1004 }
1005 else {
1006 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1007 return -1;
1008 }
1009 }
1010 return len;
1011 }
1012 else
1013 {
1014 if (!ctx->encrypt)
1015 {
1016 if (gctx->taglen < 0)
1017 return -1;
1018 if (CRYPTO_gcm128_finish(&gctx->gcm,
1019 ctx->buf, gctx->taglen) != 0)
1020 return -1;
1021 gctx->iv_set = 0;
1022 return 0;
1023 }
1024 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1025 gctx->taglen = 16;
1026 /* Don't reuse the IV */
1027 gctx->iv_set = 0;
1028 return 0;
1029 }
1030
1031 }
1032
1033#define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1034 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1035 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1036
1037BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1038 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1039BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1040 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1041BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1042 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1043
1044static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1045 {
1046 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1047 if (type != EVP_CTRL_INIT)
1048 return -1;
1049 /* key1 and key2 are used as an indicator both key and IV are set */
1050 xctx->xts.key1 = NULL;
1051 xctx->xts.key2 = NULL;
1052 return 1;
1053 }
1054
1055static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1056 const unsigned char *iv, int enc)
1057 {
1058 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1059 if (!iv && !key)
1060 return 1;
1061
1062 if (key) do
1063 {
1064#ifdef AES_XTS_ASM
1065 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1066#else
1067 xctx->stream = NULL;
1068#endif
1069 /* key_len is two AES keys */
1070#ifdef BSAES_CAPABLE
1071 if (BSAES_CAPABLE)
1072 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1073 else
1074#endif
1075#ifdef VPAES_CAPABLE
1076 if (VPAES_CAPABLE)
1077 {
1078 if (enc)
1079 {
1080 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1081 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1082 }
1083 else
1084 {
1085 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1086 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1087 }
1088
1089 vpaes_set_encrypt_key(key + ctx->key_len/2,
1090 ctx->key_len * 4, &xctx->ks2);
1091 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1092
1093 xctx->xts.key1 = &xctx->ks1;
1094 break;
1095 }
1096 else
1097#endif
1098 (void)0; /* terminate potentially open 'else' */
1099
1100 if (enc)
1101 {
1102 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1103 xctx->xts.block1 = (block128_f)AES_encrypt;
1104 }
1105 else
1106 {
1107 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1108 xctx->xts.block1 = (block128_f)AES_decrypt;
1109 }
1110
1111 AES_set_encrypt_key(key + ctx->key_len/2,
1112 ctx->key_len * 4, &xctx->ks2);
1113 xctx->xts.block2 = (block128_f)AES_encrypt;
1114
1115 xctx->xts.key1 = &xctx->ks1;
1116 } while (0);
1117
1118 if (iv)
1119 {
1120 xctx->xts.key2 = &xctx->ks2;
1121 memcpy(ctx->iv, iv, 16);
1122 }
1123
1124 return 1;
1125 }
1126
1127static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1128 const unsigned char *in, size_t len)
1129 {
1130 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1131 if (!xctx->xts.key1 || !xctx->xts.key2)
1132 return 0;
1133 if (!out || !in || len<AES_BLOCK_SIZE)
1134 return 0;
1135#ifdef OPENSSL_FIPS
1136 /* Requirement of SP800-38E */
1137 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1138 (len > (1UL<<20)*16))
1139 {
1140 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1141 return 0;
1142 }
1143#endif
1144 if (xctx->stream)
1145 (*xctx->stream)(in, out, len,
1146 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1147 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1148 ctx->encrypt))
1149 return 0;
1150 return 1;
1151 }
1152
1153#define aes_xts_cleanup NULL
1154
1155#define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1156 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1157
1158BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1159BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1160
1161static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1162 {
1163 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1164 switch (type)
1165 {
1166 case EVP_CTRL_INIT:
1167 cctx->key_set = 0;
1168 cctx->iv_set = 0;
1169 cctx->L = 8;
1170 cctx->M = 12;
1171 cctx->tag_set = 0;
1172 cctx->len_set = 0;
1173 return 1;
1174
1175 case EVP_CTRL_CCM_SET_IVLEN:
1176 arg = 15 - arg;
1177 case EVP_CTRL_CCM_SET_L:
1178 if (arg < 2 || arg > 8)
1179 return 0;
1180 cctx->L = arg;
1181 return 1;
1182
1183 case EVP_CTRL_CCM_SET_TAG:
1184 if ((arg & 1) || arg < 4 || arg > 16)
1185 return 0;
1186 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1187 return 0;
1188 if (ptr)
1189 {
1190 cctx->tag_set = 1;
1191 memcpy(c->buf, ptr, arg);
1192 }
1193 cctx->M = arg;
1194 return 1;
1195
1196 case EVP_CTRL_CCM_GET_TAG:
1197 if (!c->encrypt || !cctx->tag_set)
1198 return 0;
1199 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1200 return 0;
1201 cctx->tag_set = 0;
1202 cctx->iv_set = 0;
1203 cctx->len_set = 0;
1204 return 1;
1205
1206 default:
1207 return -1;
1208
1209 }
1210 }
1211
1212static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1213 const unsigned char *iv, int enc)
1214 {
1215 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1216 if (!iv && !key)
1217 return 1;
1218 if (key) do
1219 {
1220#ifdef VPAES_CAPABLE
1221 if (VPAES_CAPABLE)
1222 {
1223 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1224 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1225 &cctx->ks, (block128_f)vpaes_encrypt);
1226 cctx->str = NULL;
1227 cctx->key_set = 1;
1228 break;
1229 }
1230#endif
1231 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1232 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1233 &cctx->ks, (block128_f)AES_encrypt);
1234 cctx->str = NULL;
1235 cctx->key_set = 1;
1236 } while (0);
1237 if (iv)
1238 {
1239 memcpy(ctx->iv, iv, 15 - cctx->L);
1240 cctx->iv_set = 1;
1241 }
1242 return 1;
1243 }
1244
1245static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1246 const unsigned char *in, size_t len)
1247 {
1248 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1249 CCM128_CONTEXT *ccm = &cctx->ccm;
1250 /* If not set up, return error */
1251 if (!cctx->iv_set && !cctx->key_set)
1252 return -1;
1253 if (!ctx->encrypt && !cctx->tag_set)
1254 return -1;
1255 if (!out)
1256 {
1257 if (!in)
1258 {
1259 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1260 return -1;
1261 cctx->len_set = 1;
1262 return len;
1263 }
1264 /* If have AAD need message length */
1265 if (!cctx->len_set && len)
1266 return -1;
1267 CRYPTO_ccm128_aad(ccm, in, len);
1268 return len;
1269 }
1270 /* EVP_*Final() doesn't return any data */
1271 if (!in)
1272 return 0;
1273 /* If not set length yet do it */
1274 if (!cctx->len_set)
1275 {
1276 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1277 return -1;
1278 cctx->len_set = 1;
1279 }
1280 if (ctx->encrypt)
1281 {
1282 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1283 cctx->str) :
1284 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1285 return -1;
1286 cctx->tag_set = 1;
1287 return len;
1288 }
1289 else
1290 {
1291 int rv = -1;
1292 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1293 cctx->str) :
1294 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1295 {
1296 unsigned char tag[16];
1297 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1298 {
1299 if (!memcmp(tag, ctx->buf, cctx->M))
1300 rv = len;
1301 }
1302 }
1303 if (rv == -1)
1304 OPENSSL_cleanse(out, len);
1305 cctx->iv_set = 0;
1306 cctx->tag_set = 0;
1307 cctx->len_set = 0;
1308 return rv;
1309 }
1310
1311 }
1312
1313#define aes_ccm_cleanup NULL
1314
1315BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1316BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1317BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1318
1319#endif
1320#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-09 06:54:34 +0000