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AES for SPARC T4: add XTS, reorder subroutines to improve TLB locality.
[thirdparty/openssl.git] / crypto / evp / e_aes.c
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 #define OPENSSL_FIPSAPI
52
53 #include <openssl/opensslconf.h>
54 #ifndef OPENSSL_NO_AES
55 #include <openssl/evp.h>
56 #include <openssl/err.h>
57 #include <string.h>
58 #include <assert.h>
59 #include <openssl/aes.h>
60 #include "evp_locl.h"
61 #include "modes_lcl.h"
62 #include <openssl/rand.h>
63
64 typedef struct
65 {
66 union { double align; AES_KEY ks; } ks;
67 block128_f block;
68 union {
69 cbc128_f cbc;
70 ctr128_f ctr;
71 } stream;
72 } EVP_AES_KEY;
73
74 typedef struct
75 {
76 union { double align; AES_KEY ks; } ks; /* AES key schedule to use */
77 int key_set; /* Set if key initialised */
78 int iv_set; /* Set if an iv is set */
79 GCM128_CONTEXT gcm;
80 unsigned char *iv; /* Temporary IV store */
81 int ivlen; /* IV length */
82 int taglen;
83 int iv_gen; /* It is OK to generate IVs */
84 int tls_aad_len; /* TLS AAD length */
85 ctr128_f ctr;
86 } EVP_AES_GCM_CTX;
87
88 typedef struct
89 {
90 union { double align; AES_KEY ks; } ks1, ks2; /* AES key schedules to use */
91 XTS128_CONTEXT xts;
92 void (*stream)(const unsigned char *in,
93 unsigned char *out, size_t length,
94 const AES_KEY *key1, const AES_KEY *key2,
95 const unsigned char iv[16]);
96 } EVP_AES_XTS_CTX;
97
98 typedef struct
99 {
100 union { double align; AES_KEY ks; } ks; /* AES key schedule to use */
101 int key_set; /* Set if key initialised */
102 int iv_set; /* Set if an iv is set */
103 int tag_set; /* Set if tag is valid */
104 int len_set; /* Set if message length set */
105 int L, M; /* L and M parameters from RFC3610 */
106 CCM128_CONTEXT ccm;
107 ccm128_f str;
108 } EVP_AES_CCM_CTX;
109
110 #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
111
112 #ifdef VPAES_ASM
113 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
114 AES_KEY *key);
115 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
116 AES_KEY *key);
117
118 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
119 const AES_KEY *key);
120 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
121 const AES_KEY *key);
122
123 void vpaes_cbc_encrypt(const unsigned char *in,
124 unsigned char *out,
125 size_t length,
126 const AES_KEY *key,
127 unsigned char *ivec, int enc);
128 #endif
129 #ifdef BSAES_ASM
130 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
131 size_t length, const AES_KEY *key,
132 unsigned char ivec[16], int enc);
133 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
134 size_t len, const AES_KEY *key,
135 const unsigned char ivec[16]);
136 void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
137 size_t len, const AES_KEY *key1,
138 const AES_KEY *key2, const unsigned char iv[16]);
139 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
140 size_t len, const AES_KEY *key1,
141 const AES_KEY *key2, const unsigned char iv[16]);
142 #endif
143 #ifdef AES_CTR_ASM
144 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
145 size_t blocks, const AES_KEY *key,
146 const unsigned char ivec[AES_BLOCK_SIZE]);
147 #endif
148 #ifdef AES_XTS_ASM
149 void AES_xts_encrypt(const char *inp,char *out,size_t len,
150 const AES_KEY *key1, const AES_KEY *key2,
151 const unsigned char iv[16]);
152 void AES_xts_decrypt(const char *inp,char *out,size_t len,
153 const AES_KEY *key1, const AES_KEY *key2,
154 const unsigned char iv[16]);
155 #endif
156
157 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
158 ((defined(__i386) || defined(__i386__) || \
159 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
160 defined(__x86_64) || defined(__x86_64__) || \
161 defined(_M_AMD64) || defined(_M_X64) || \
162 defined(__INTEL__) )
163
164 extern unsigned int OPENSSL_ia32cap_P[];
165
166 #ifdef VPAES_ASM
167 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
168 #endif
169 #ifdef BSAES_ASM
170 #define BSAES_CAPABLE VPAES_CAPABLE
171 #endif
172 /*
173 * AES-NI section
174 */
175 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
176
177 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
178 AES_KEY *key);
179 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
180 AES_KEY *key);
181
182 void aesni_encrypt(const unsigned char *in, unsigned char *out,
183 const AES_KEY *key);
184 void aesni_decrypt(const unsigned char *in, unsigned char *out,
185 const AES_KEY *key);
186
187 void aesni_ecb_encrypt(const unsigned char *in,
188 unsigned char *out,
189 size_t length,
190 const AES_KEY *key,
191 int enc);
192 void aesni_cbc_encrypt(const unsigned char *in,
193 unsigned char *out,
194 size_t length,
195 const AES_KEY *key,
196 unsigned char *ivec, int enc);
197
198 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
199 unsigned char *out,
200 size_t blocks,
201 const void *key,
202 const unsigned char *ivec);
203
204 void aesni_xts_encrypt(const unsigned char *in,
205 unsigned char *out,
206 size_t length,
207 const AES_KEY *key1, const AES_KEY *key2,
208 const unsigned char iv[16]);
209
210 void aesni_xts_decrypt(const unsigned char *in,
211 unsigned char *out,
212 size_t length,
213 const AES_KEY *key1, const AES_KEY *key2,
214 const unsigned char iv[16]);
215
216 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
217 unsigned char *out,
218 size_t blocks,
219 const void *key,
220 const unsigned char ivec[16],
221 unsigned char cmac[16]);
222
223 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
224 unsigned char *out,
225 size_t blocks,
226 const void *key,
227 const unsigned char ivec[16],
228 unsigned char cmac[16]);
229
230 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
231 const unsigned char *iv, int enc)
232 {
233 int ret, mode;
234 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
235
236 mode = ctx->cipher->flags & EVP_CIPH_MODE;
237 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
238 && !enc)
239 {
240 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
241 dat->block = (block128_f)aesni_decrypt;
242 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
243 (cbc128_f)aesni_cbc_encrypt :
244 NULL;
245 }
246 else {
247 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
248 dat->block = (block128_f)aesni_encrypt;
249 if (mode==EVP_CIPH_CBC_MODE)
250 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
251 else if (mode==EVP_CIPH_CTR_MODE)
252 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
253 else
254 dat->stream.cbc = NULL;
255 }
256
257 if(ret < 0)
258 {
259 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
260 return 0;
261 }
262
263 return 1;
264 }
265
266 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
267 const unsigned char *in, size_t len)
268 {
269 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
270
271 return 1;
272 }
273
274 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
275 const unsigned char *in, size_t len)
276 {
277 size_t bl = ctx->cipher->block_size;
278
279 if (len<bl) return 1;
280
281 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
282
283 return 1;
284 }
285
286 #define aesni_ofb_cipher aes_ofb_cipher
287 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
288 const unsigned char *in,size_t len);
289
290 #define aesni_cfb_cipher aes_cfb_cipher
291 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
292 const unsigned char *in,size_t len);
293
294 #define aesni_cfb8_cipher aes_cfb8_cipher
295 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
296 const unsigned char *in,size_t len);
297
298 #define aesni_cfb1_cipher aes_cfb1_cipher
299 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
300 const unsigned char *in,size_t len);
301
302 #define aesni_ctr_cipher aes_ctr_cipher
303 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
304 const unsigned char *in, size_t len);
305
306 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
307 const unsigned char *iv, int enc)
308 {
309 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
310 if (!iv && !key)
311 return 1;
312 if (key)
313 {
314 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
315 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
316 (block128_f)aesni_encrypt);
317 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
318 /* If we have an iv can set it directly, otherwise use
319 * saved IV.
320 */
321 if (iv == NULL && gctx->iv_set)
322 iv = gctx->iv;
323 if (iv)
324 {
325 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
326 gctx->iv_set = 1;
327 }
328 gctx->key_set = 1;
329 }
330 else
331 {
332 /* If key set use IV, otherwise copy */
333 if (gctx->key_set)
334 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
335 else
336 memcpy(gctx->iv, iv, gctx->ivlen);
337 gctx->iv_set = 1;
338 gctx->iv_gen = 0;
339 }
340 return 1;
341 }
342
343 #define aesni_gcm_cipher aes_gcm_cipher
344 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
345 const unsigned char *in, size_t len);
346
347 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
348 const unsigned char *iv, int enc)
349 {
350 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
351 if (!iv && !key)
352 return 1;
353
354 if (key)
355 {
356 /* key_len is two AES keys */
357 if (enc)
358 {
359 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
360 xctx->xts.block1 = (block128_f)aesni_encrypt;
361 xctx->stream = aesni_xts_encrypt;
362 }
363 else
364 {
365 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
366 xctx->xts.block1 = (block128_f)aesni_decrypt;
367 xctx->stream = aesni_xts_decrypt;
368 }
369
370 aesni_set_encrypt_key(key + ctx->key_len/2,
371 ctx->key_len * 4, &xctx->ks2.ks);
372 xctx->xts.block2 = (block128_f)aesni_encrypt;
373
374 xctx->xts.key1 = &xctx->ks1;
375 }
376
377 if (iv)
378 {
379 xctx->xts.key2 = &xctx->ks2;
380 memcpy(ctx->iv, iv, 16);
381 }
382
383 return 1;
384 }
385
386 #define aesni_xts_cipher aes_xts_cipher
387 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
388 const unsigned char *in, size_t len);
389
390 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
391 const unsigned char *iv, int enc)
392 {
393 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
394 if (!iv && !key)
395 return 1;
396 if (key)
397 {
398 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
399 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
400 &cctx->ks, (block128_f)aesni_encrypt);
401 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
402 (ccm128_f)aesni_ccm64_decrypt_blocks;
403 cctx->key_set = 1;
404 }
405 if (iv)
406 {
407 memcpy(ctx->iv, iv, 15 - cctx->L);
408 cctx->iv_set = 1;
409 }
410 return 1;
411 }
412
413 #define aesni_ccm_cipher aes_ccm_cipher
414 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
415 const unsigned char *in, size_t len);
416
417 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
418 static const EVP_CIPHER aesni_##keylen##_##mode = { \
419 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
420 flags|EVP_CIPH_##MODE##_MODE, \
421 aesni_init_key, \
422 aesni_##mode##_cipher, \
423 NULL, \
424 sizeof(EVP_AES_KEY), \
425 NULL,NULL,NULL,NULL }; \
426 static const EVP_CIPHER aes_##keylen##_##mode = { \
427 nid##_##keylen##_##nmode,blocksize, \
428 keylen/8,ivlen, \
429 flags|EVP_CIPH_##MODE##_MODE, \
430 aes_init_key, \
431 aes_##mode##_cipher, \
432 NULL, \
433 sizeof(EVP_AES_KEY), \
434 NULL,NULL,NULL,NULL }; \
435 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
436 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
437
438 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
439 static const EVP_CIPHER aesni_##keylen##_##mode = { \
440 nid##_##keylen##_##mode,blocksize, \
441 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
442 flags|EVP_CIPH_##MODE##_MODE, \
443 aesni_##mode##_init_key, \
444 aesni_##mode##_cipher, \
445 aes_##mode##_cleanup, \
446 sizeof(EVP_AES_##MODE##_CTX), \
447 NULL,NULL,aes_##mode##_ctrl,NULL }; \
448 static const EVP_CIPHER aes_##keylen##_##mode = { \
449 nid##_##keylen##_##mode,blocksize, \
450 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
451 flags|EVP_CIPH_##MODE##_MODE, \
452 aes_##mode##_init_key, \
453 aes_##mode##_cipher, \
454 aes_##mode##_cleanup, \
455 sizeof(EVP_AES_##MODE##_CTX), \
456 NULL,NULL,aes_##mode##_ctrl,NULL }; \
457 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
458 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
459
460 #elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
461
462 #include "sparc_arch.h"
463
464 extern unsigned int OPENSSL_sparcv9cap_P[];
465
466 #define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES)
467
468 void aes_t4_set_encrypt_key (const unsigned char *key, int bits,
469 AES_KEY *ks);
470 void aes_t4_set_decrypt_key (const unsigned char *key, int bits,
471 AES_KEY *ks);
472 void aes_t4_encrypt (const unsigned char *in, unsigned char *out,
473 const AES_KEY *key);
474 void aes_t4_decrypt (const unsigned char *in, unsigned char *out,
475 const AES_KEY *key);
476 /*
477 * Key-length specific subroutines were chosen for following reason.
478 * Each SPARC T4 core can execute up to 8 threads which share core's
479 * resources. Loading as much key material to registers allows to
480 * minimize references to shared memory interface, as well as amount
481 * of instructions in inner loops [much needed on T4]. But then having
482 * non-key-length specific routines would require conditional branches
483 * either in inner loops or on subroutines' entries. Former is hardly
484 * acceptable, while latter means code size increase to size occupied
485 * by multiple key-length specfic subroutines, so why fight?
486 */
487 void aes128_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
488 size_t len, const AES_KEY *key,
489 unsigned char *ivec);
490 void aes128_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
491 size_t len, const AES_KEY *key,
492 unsigned char *ivec);
493 void aes192_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
494 size_t len, const AES_KEY *key,
495 unsigned char *ivec);
496 void aes192_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
497 size_t len, const AES_KEY *key,
498 unsigned char *ivec);
499 void aes256_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
500 size_t len, const AES_KEY *key,
501 unsigned char *ivec);
502 void aes256_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
503 size_t len, const AES_KEY *key,
504 unsigned char *ivec);
505 void aes128_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
506 size_t blocks, const AES_KEY *key,
507 unsigned char *ivec);
508 void aes192_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
509 size_t blocks, const AES_KEY *key,
510 unsigned char *ivec);
511 void aes256_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
512 size_t blocks, const AES_KEY *key,
513 unsigned char *ivec);
514 void aes128_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
515 size_t blocks, const AES_KEY *key1,
516 const AES_KEY *key2, const unsigned char *ivec);
517 void aes128_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
518 size_t blocks, const AES_KEY *key1,
519 const AES_KEY *key2, const unsigned char *ivec);
520 void aes256_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
521 size_t blocks, const AES_KEY *key1,
522 const AES_KEY *key2, const unsigned char *ivec);
523 void aes256_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
524 size_t blocks, const AES_KEY *key1,
525 const AES_KEY *key2, const unsigned char *ivec);
526
527 static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
528 const unsigned char *iv, int enc)
529 {
530 int ret, mode, bits;
531 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
532
533 mode = ctx->cipher->flags & EVP_CIPH_MODE;
534 bits = ctx->key_len*8;
535 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
536 && !enc)
537 {
538 ret = 0;
539 aes_t4_set_decrypt_key(key, bits, ctx->cipher_data);
540 dat->block = (block128_f)aes_t4_decrypt;
541 switch (bits) {
542 case 128:
543 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
544 (cbc128_f)aes128_t4_cbc_decrypt :
545 NULL;
546 break;
547 case 192:
548 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
549 (cbc128_f)aes192_t4_cbc_decrypt :
550 NULL;
551 break;
552 case 256:
553 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
554 (cbc128_f)aes256_t4_cbc_decrypt :
555 NULL;
556 break;
557 default:
558 ret = -1;
559 }
560 }
561 else {
562 ret = 0;
563 aes_t4_set_encrypt_key(key, bits, ctx->cipher_data);
564 dat->block = (block128_f)aes_t4_encrypt;
565 switch (bits) {
566 case 128:
567 if (mode==EVP_CIPH_CBC_MODE)
568 dat->stream.cbc = (cbc128_f)aes128_t4_cbc_encrypt;
569 else if (mode==EVP_CIPH_CTR_MODE)
570 dat->stream.ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
571 else
572 dat->stream.cbc = NULL;
573 break;
574 case 192:
575 if (mode==EVP_CIPH_CBC_MODE)
576 dat->stream.cbc = (cbc128_f)aes192_t4_cbc_encrypt;
577 else if (mode==EVP_CIPH_CTR_MODE)
578 dat->stream.ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
579 else
580 dat->stream.cbc = NULL;
581 break;
582 case 256:
583 if (mode==EVP_CIPH_CBC_MODE)
584 dat->stream.cbc = (cbc128_f)aes256_t4_cbc_encrypt;
585 else if (mode==EVP_CIPH_CTR_MODE)
586 dat->stream.ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
587 else
588 dat->stream.cbc = NULL;
589 break;
590 default:
591 ret = -1;
592 }
593 }
594
595 if(ret < 0)
596 {
597 EVPerr(EVP_F_AES_T4_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
598 return 0;
599 }
600
601 return 1;
602 }
603
604 #define aes_t4_cbc_cipher aes_cbc_cipher
605 static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
606 const unsigned char *in, size_t len);
607
608 #define aes_t4_ecb_cipher aes_ecb_cipher
609 static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
610 const unsigned char *in, size_t len);
611
612 #define aes_t4_ofb_cipher aes_ofb_cipher
613 static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
614 const unsigned char *in,size_t len);
615
616 #define aes_t4_cfb_cipher aes_cfb_cipher
617 static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
618 const unsigned char *in,size_t len);
619
620 #define aes_t4_cfb8_cipher aes_cfb8_cipher
621 static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
622 const unsigned char *in,size_t len);
623
624 #define aes_t4_cfb1_cipher aes_cfb1_cipher
625 static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
626 const unsigned char *in,size_t len);
627
628 #define aes_t4_ctr_cipher aes_ctr_cipher
629 static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
630 const unsigned char *in, size_t len);
631
632 static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
633 const unsigned char *iv, int enc)
634 {
635 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
636 if (!iv && !key)
637 return 1;
638 if (key)
639 {
640 int bits = ctx->key_len * 8;
641 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
642 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
643 (block128_f)aes_t4_encrypt);
644 switch (bits) {
645 case 128:
646 gctx->ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
647 break;
648 case 192:
649 gctx->ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
650 break;
651 case 256:
652 gctx->ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
653 break;
654 default:
655 return 0;
656 }
657 /* If we have an iv can set it directly, otherwise use
658 * saved IV.
659 */
660 if (iv == NULL && gctx->iv_set)
661 iv = gctx->iv;
662 if (iv)
663 {
664 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
665 gctx->iv_set = 1;
666 }
667 gctx->key_set = 1;
668 }
669 else
670 {
671 /* If key set use IV, otherwise copy */
672 if (gctx->key_set)
673 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
674 else
675 memcpy(gctx->iv, iv, gctx->ivlen);
676 gctx->iv_set = 1;
677 gctx->iv_gen = 0;
678 }
679 return 1;
680 }
681
682 #define aes_t4_gcm_cipher aes_gcm_cipher
683 static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
684 const unsigned char *in, size_t len);
685
686 static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
687 const unsigned char *iv, int enc)
688 {
689 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
690 if (!iv && !key)
691 return 1;
692
693 if (key)
694 {
695 int bits = ctx->key_len * 4;
696 xctx->stream = NULL;
697 /* key_len is two AES keys */
698 if (enc)
699 {
700 aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
701 xctx->xts.block1 = (block128_f)aes_t4_encrypt;
702 switch (bits) {
703 case 128:
704 xctx->stream = aes128_t4_xts_encrypt;
705 break;
706 #if 0 /* not yet */
707 case 192:
708 xctx->stream = aes192_t4_xts_encrypt;
709 break;
710 #endif
711 case 256:
712 xctx->stream = aes256_t4_xts_encrypt;
713 break;
714 default:
715 return 0;
716 }
717 }
718 else
719 {
720 aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
721 xctx->xts.block1 = (block128_f)aes_t4_decrypt;
722 switch (bits) {
723 case 128:
724 xctx->stream = aes128_t4_xts_decrypt;
725 break;
726 #if 0 /* not yet */
727 case 192:
728 xctx->stream = aes192_t4_xts_decrypt;
729 break;
730 #endif
731 case 256:
732 xctx->stream = aes256_t4_xts_decrypt;
733 break;
734 default:
735 return 0;
736 }
737 }
738
739 aes_t4_set_encrypt_key(key + ctx->key_len/2,
740 ctx->key_len * 4, &xctx->ks2.ks);
741 xctx->xts.block2 = (block128_f)aes_t4_encrypt;
742
743 xctx->xts.key1 = &xctx->ks1;
744 }
745
746 if (iv)
747 {
748 xctx->xts.key2 = &xctx->ks2;
749 memcpy(ctx->iv, iv, 16);
750 }
751
752 return 1;
753 }
754
755 #define aes_t4_xts_cipher aes_xts_cipher
756 static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
757 const unsigned char *in, size_t len);
758
759 static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
760 const unsigned char *iv, int enc)
761 {
762 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
763 if (!iv && !key)
764 return 1;
765 if (key)
766 {
767 int bits = ctx->key_len * 8;
768 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
769 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
770 &cctx->ks, (block128_f)aes_t4_encrypt);
771 #if 0 /* not yet */
772 switch (bits) {
773 case 128:
774 cctx->str = enc?(ccm128_f)aes128_t4_ccm64_encrypt :
775 (ccm128_f)ae128_t4_ccm64_decrypt;
776 break;
777 case 192:
778 cctx->str = enc?(ccm128_f)aes192_t4_ccm64_encrypt :
779 (ccm128_f)ae192_t4_ccm64_decrypt;
780 break;
781 case 256:
782 cctx->str = enc?(ccm128_f)aes256_t4_ccm64_encrypt :
783 (ccm128_f)ae256_t4_ccm64_decrypt;
784 break;
785 default:
786 return 0;
787 }
788 #endif
789 cctx->key_set = 1;
790 }
791 if (iv)
792 {
793 memcpy(ctx->iv, iv, 15 - cctx->L);
794 cctx->iv_set = 1;
795 }
796 return 1;
797 }
798
799 #define aes_t4_ccm_cipher aes_ccm_cipher
800 static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
801 const unsigned char *in, size_t len);
802
803 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
804 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
805 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
806 flags|EVP_CIPH_##MODE##_MODE, \
807 aes_t4_init_key, \
808 aes_t4_##mode##_cipher, \
809 NULL, \
810 sizeof(EVP_AES_KEY), \
811 NULL,NULL,NULL,NULL }; \
812 static const EVP_CIPHER aes_##keylen##_##mode = { \
813 nid##_##keylen##_##nmode,blocksize, \
814 keylen/8,ivlen, \
815 flags|EVP_CIPH_##MODE##_MODE, \
816 aes_init_key, \
817 aes_##mode##_cipher, \
818 NULL, \
819 sizeof(EVP_AES_KEY), \
820 NULL,NULL,NULL,NULL }; \
821 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
822 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
823
824 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
825 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
826 nid##_##keylen##_##mode,blocksize, \
827 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
828 flags|EVP_CIPH_##MODE##_MODE, \
829 aes_t4_##mode##_init_key, \
830 aes_t4_##mode##_cipher, \
831 aes_##mode##_cleanup, \
832 sizeof(EVP_AES_##MODE##_CTX), \
833 NULL,NULL,aes_##mode##_ctrl,NULL }; \
834 static const EVP_CIPHER aes_##keylen##_##mode = { \
835 nid##_##keylen##_##mode,blocksize, \
836 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
837 flags|EVP_CIPH_##MODE##_MODE, \
838 aes_##mode##_init_key, \
839 aes_##mode##_cipher, \
840 aes_##mode##_cleanup, \
841 sizeof(EVP_AES_##MODE##_CTX), \
842 NULL,NULL,aes_##mode##_ctrl,NULL }; \
843 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
844 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
845
846 #else
847
848 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
849 static const EVP_CIPHER aes_##keylen##_##mode = { \
850 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
851 flags|EVP_CIPH_##MODE##_MODE, \
852 aes_init_key, \
853 aes_##mode##_cipher, \
854 NULL, \
855 sizeof(EVP_AES_KEY), \
856 NULL,NULL,NULL,NULL }; \
857 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
858 { return &aes_##keylen##_##mode; }
859
860 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
861 static const EVP_CIPHER aes_##keylen##_##mode = { \
862 nid##_##keylen##_##mode,blocksize, \
863 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
864 flags|EVP_CIPH_##MODE##_MODE, \
865 aes_##mode##_init_key, \
866 aes_##mode##_cipher, \
867 aes_##mode##_cleanup, \
868 sizeof(EVP_AES_##MODE##_CTX), \
869 NULL,NULL,aes_##mode##_ctrl,NULL }; \
870 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
871 { return &aes_##keylen##_##mode; }
872 #endif
873
874 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
875 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
876 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
877 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
878 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
879 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
880 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
881 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
882
883 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
884 const unsigned char *iv, int enc)
885 {
886 int ret, mode;
887 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
888
889 mode = ctx->cipher->flags & EVP_CIPH_MODE;
890 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
891 && !enc)
892 #ifdef BSAES_CAPABLE
893 if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
894 {
895 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
896 dat->block = (block128_f)AES_decrypt;
897 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
898 }
899 else
900 #endif
901 #ifdef VPAES_CAPABLE
902 if (VPAES_CAPABLE)
903 {
904 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
905 dat->block = (block128_f)vpaes_decrypt;
906 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
907 (cbc128_f)vpaes_cbc_encrypt :
908 NULL;
909 }
910 else
911 #endif
912 {
913 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
914 dat->block = (block128_f)AES_decrypt;
915 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
916 (cbc128_f)AES_cbc_encrypt :
917 NULL;
918 }
919 else
920 #ifdef BSAES_CAPABLE
921 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
922 {
923 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
924 dat->block = (block128_f)AES_encrypt;
925 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
926 }
927 else
928 #endif
929 #ifdef VPAES_CAPABLE
930 if (VPAES_CAPABLE)
931 {
932 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
933 dat->block = (block128_f)vpaes_encrypt;
934 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
935 (cbc128_f)vpaes_cbc_encrypt :
936 NULL;
937 }
938 else
939 #endif
940 {
941 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
942 dat->block = (block128_f)AES_encrypt;
943 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
944 (cbc128_f)AES_cbc_encrypt :
945 NULL;
946 #ifdef AES_CTR_ASM
947 if (mode==EVP_CIPH_CTR_MODE)
948 dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
949 #endif
950 }
951
952 if(ret < 0)
953 {
954 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
955 return 0;
956 }
957
958 return 1;
959 }
960
961 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
962 const unsigned char *in, size_t len)
963 {
964 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
965
966 if (dat->stream.cbc)
967 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
968 else if (ctx->encrypt)
969 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
970 else
971 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
972
973 return 1;
974 }
975
976 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
977 const unsigned char *in, size_t len)
978 {
979 size_t bl = ctx->cipher->block_size;
980 size_t i;
981 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
982
983 if (len<bl) return 1;
984
985 for (i=0,len-=bl;i<=len;i+=bl)
986 (*dat->block)(in+i,out+i,&dat->ks);
987
988 return 1;
989 }
990
991 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
992 const unsigned char *in,size_t len)
993 {
994 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
995
996 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
997 ctx->iv,&ctx->num,dat->block);
998 return 1;
999 }
1000
1001 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1002 const unsigned char *in,size_t len)
1003 {
1004 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1005
1006 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
1007 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1008 return 1;
1009 }
1010
1011 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1012 const unsigned char *in,size_t len)
1013 {
1014 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1015
1016 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
1017 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1018 return 1;
1019 }
1020
1021 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1022 const unsigned char *in,size_t len)
1023 {
1024 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1025
1026 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
1027 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
1028 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1029 return 1;
1030 }
1031
1032 while (len>=MAXBITCHUNK) {
1033 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
1034 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1035 len-=MAXBITCHUNK;
1036 }
1037 if (len)
1038 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
1039 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1040
1041 return 1;
1042 }
1043
1044 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
1045 const unsigned char *in, size_t len)
1046 {
1047 unsigned int num = ctx->num;
1048 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1049
1050 if (dat->stream.ctr)
1051 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
1052 ctx->iv,ctx->buf,&num,dat->stream.ctr);
1053 else
1054 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
1055 ctx->iv,ctx->buf,&num,dat->block);
1056 ctx->num = (size_t)num;
1057 return 1;
1058 }
1059
1060 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
1061 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
1062 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
1063
1064 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
1065 {
1066 EVP_AES_GCM_CTX *gctx = c->cipher_data;
1067 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
1068 if (gctx->iv != c->iv)
1069 OPENSSL_free(gctx->iv);
1070 return 1;
1071 }
1072
1073 /* increment counter (64-bit int) by 1 */
1074 static void ctr64_inc(unsigned char *counter) {
1075 int n=8;
1076 unsigned char c;
1077
1078 do {
1079 --n;
1080 c = counter[n];
1081 ++c;
1082 counter[n] = c;
1083 if (c) return;
1084 } while (n);
1085 }
1086
1087 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1088 {
1089 EVP_AES_GCM_CTX *gctx = c->cipher_data;
1090 switch (type)
1091 {
1092 case EVP_CTRL_INIT:
1093 gctx->key_set = 0;
1094 gctx->iv_set = 0;
1095 gctx->ivlen = c->cipher->iv_len;
1096 gctx->iv = c->iv;
1097 gctx->taglen = -1;
1098 gctx->iv_gen = 0;
1099 gctx->tls_aad_len = -1;
1100 return 1;
1101
1102 case EVP_CTRL_GCM_SET_IVLEN:
1103 if (arg <= 0)
1104 return 0;
1105 #ifdef OPENSSL_FIPS
1106 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
1107 && arg < 12)
1108 return 0;
1109 #endif
1110 /* Allocate memory for IV if needed */
1111 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
1112 {
1113 if (gctx->iv != c->iv)
1114 OPENSSL_free(gctx->iv);
1115 gctx->iv = OPENSSL_malloc(arg);
1116 if (!gctx->iv)
1117 return 0;
1118 }
1119 gctx->ivlen = arg;
1120 return 1;
1121
1122 case EVP_CTRL_GCM_SET_TAG:
1123 if (arg <= 0 || arg > 16 || c->encrypt)
1124 return 0;
1125 memcpy(c->buf, ptr, arg);
1126 gctx->taglen = arg;
1127 return 1;
1128
1129 case EVP_CTRL_GCM_GET_TAG:
1130 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
1131 return 0;
1132 memcpy(ptr, c->buf, arg);
1133 return 1;
1134
1135 case EVP_CTRL_GCM_SET_IV_FIXED:
1136 /* Special case: -1 length restores whole IV */
1137 if (arg == -1)
1138 {
1139 memcpy(gctx->iv, ptr, gctx->ivlen);
1140 gctx->iv_gen = 1;
1141 return 1;
1142 }
1143 /* Fixed field must be at least 4 bytes and invocation field
1144 * at least 8.
1145 */
1146 if ((arg < 4) || (gctx->ivlen - arg) < 8)
1147 return 0;
1148 if (arg)
1149 memcpy(gctx->iv, ptr, arg);
1150 if (c->encrypt &&
1151 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
1152 return 0;
1153 gctx->iv_gen = 1;
1154 return 1;
1155
1156 case EVP_CTRL_GCM_IV_GEN:
1157 if (gctx->iv_gen == 0 || gctx->key_set == 0)
1158 return 0;
1159 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1160 if (arg <= 0 || arg > gctx->ivlen)
1161 arg = gctx->ivlen;
1162 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
1163 /* Invocation field will be at least 8 bytes in size and
1164 * so no need to check wrap around or increment more than
1165 * last 8 bytes.
1166 */
1167 ctr64_inc(gctx->iv + gctx->ivlen - 8);
1168 gctx->iv_set = 1;
1169 return 1;
1170
1171 case EVP_CTRL_GCM_SET_IV_INV:
1172 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
1173 return 0;
1174 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
1175 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1176 gctx->iv_set = 1;
1177 return 1;
1178
1179 case EVP_CTRL_AEAD_TLS1_AAD:
1180 /* Save the AAD for later use */
1181 if (arg != 13)
1182 return 0;
1183 memcpy(c->buf, ptr, arg);
1184 gctx->tls_aad_len = arg;
1185 {
1186 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
1187 /* Correct length for explicit IV */
1188 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1189 /* If decrypting correct for tag too */
1190 if (!c->encrypt)
1191 len -= EVP_GCM_TLS_TAG_LEN;
1192 c->buf[arg-2] = len>>8;
1193 c->buf[arg-1] = len & 0xff;
1194 }
1195 /* Extra padding: tag appended to record */
1196 return EVP_GCM_TLS_TAG_LEN;
1197
1198 default:
1199 return -1;
1200
1201 }
1202 }
1203
1204 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1205 const unsigned char *iv, int enc)
1206 {
1207 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1208 if (!iv && !key)
1209 return 1;
1210 if (key)
1211 { do {
1212 #ifdef BSAES_CAPABLE
1213 if (BSAES_CAPABLE)
1214 {
1215 AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1216 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1217 (block128_f)AES_encrypt);
1218 gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
1219 break;
1220 }
1221 else
1222 #endif
1223 #ifdef VPAES_CAPABLE
1224 if (VPAES_CAPABLE)
1225 {
1226 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1227 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1228 (block128_f)vpaes_encrypt);
1229 gctx->ctr = NULL;
1230 break;
1231 }
1232 #endif
1233 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
1234 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1235 #ifdef AES_CTR_ASM
1236 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
1237 #else
1238 gctx->ctr = NULL;
1239 #endif
1240 } while (0);
1241
1242 /* If we have an iv can set it directly, otherwise use
1243 * saved IV.
1244 */
1245 if (iv == NULL && gctx->iv_set)
1246 iv = gctx->iv;
1247 if (iv)
1248 {
1249 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1250 gctx->iv_set = 1;
1251 }
1252 gctx->key_set = 1;
1253 }
1254 else
1255 {
1256 /* If key set use IV, otherwise copy */
1257 if (gctx->key_set)
1258 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1259 else
1260 memcpy(gctx->iv, iv, gctx->ivlen);
1261 gctx->iv_set = 1;
1262 gctx->iv_gen = 0;
1263 }
1264 return 1;
1265 }
1266
1267 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1268 * followed by the payload and finally the tag. On encrypt generate IV,
1269 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1270 * and verify tag.
1271 */
1272
1273 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1274 const unsigned char *in, size_t len)
1275 {
1276 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1277 int rv = -1;
1278 /* Encrypt/decrypt must be performed in place */
1279 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
1280 return -1;
1281 /* Set IV from start of buffer or generate IV and write to start
1282 * of buffer.
1283 */
1284 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1285 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1286 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1287 goto err;
1288 /* Use saved AAD */
1289 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1290 goto err;
1291 /* Fix buffer and length to point to payload */
1292 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1293 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1294 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1295 if (ctx->encrypt)
1296 {
1297 /* Encrypt payload */
1298 if (gctx->ctr)
1299 {
1300 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1301 in, out, len,
1302 gctx->ctr))
1303 goto err;
1304 }
1305 else {
1306 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1307 goto err;
1308 }
1309 out += len;
1310 /* Finally write tag */
1311 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1312 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1313 }
1314 else
1315 {
1316 /* Decrypt */
1317 if (gctx->ctr)
1318 {
1319 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1320 in, out, len,
1321 gctx->ctr))
1322 goto err;
1323 }
1324 else {
1325 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1326 goto err;
1327 }
1328 /* Retrieve tag */
1329 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1330 EVP_GCM_TLS_TAG_LEN);
1331 /* If tag mismatch wipe buffer */
1332 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1333 {
1334 OPENSSL_cleanse(out, len);
1335 goto err;
1336 }
1337 rv = len;
1338 }
1339
1340 err:
1341 gctx->iv_set = 0;
1342 gctx->tls_aad_len = -1;
1343 return rv;
1344 }
1345
1346 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1347 const unsigned char *in, size_t len)
1348 {
1349 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1350 /* If not set up, return error */
1351 if (!gctx->key_set)
1352 return -1;
1353
1354 if (gctx->tls_aad_len >= 0)
1355 return aes_gcm_tls_cipher(ctx, out, in, len);
1356
1357 if (!gctx->iv_set)
1358 return -1;
1359 if (in)
1360 {
1361 if (out == NULL)
1362 {
1363 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1364 return -1;
1365 }
1366 else if (ctx->encrypt)
1367 {
1368 if (gctx->ctr)
1369 {
1370 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1371 in, out, len,
1372 gctx->ctr))
1373 return -1;
1374 }
1375 else {
1376 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1377 return -1;
1378 }
1379 }
1380 else
1381 {
1382 if (gctx->ctr)
1383 {
1384 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1385 in, out, len,
1386 gctx->ctr))
1387 return -1;
1388 }
1389 else {
1390 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1391 return -1;
1392 }
1393 }
1394 return len;
1395 }
1396 else
1397 {
1398 if (!ctx->encrypt)
1399 {
1400 if (gctx->taglen < 0)
1401 return -1;
1402 if (CRYPTO_gcm128_finish(&gctx->gcm,
1403 ctx->buf, gctx->taglen) != 0)
1404 return -1;
1405 gctx->iv_set = 0;
1406 return 0;
1407 }
1408 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1409 gctx->taglen = 16;
1410 /* Don't reuse the IV */
1411 gctx->iv_set = 0;
1412 return 0;
1413 }
1414
1415 }
1416
1417 #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1418 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1419 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1420
1421 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1422 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1423 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1424 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1425 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1426 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1427
1428 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1429 {
1430 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1431 if (type != EVP_CTRL_INIT)
1432 return -1;
1433 /* key1 and key2 are used as an indicator both key and IV are set */
1434 xctx->xts.key1 = NULL;
1435 xctx->xts.key2 = NULL;
1436 return 1;
1437 }
1438
1439 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1440 const unsigned char *iv, int enc)
1441 {
1442 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1443 if (!iv && !key)
1444 return 1;
1445
1446 if (key) do
1447 {
1448 #ifdef AES_XTS_ASM
1449 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1450 #else
1451 xctx->stream = NULL;
1452 #endif
1453 /* key_len is two AES keys */
1454 #ifdef BSAES_CAPABLE
1455 if (BSAES_CAPABLE)
1456 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1457 else
1458 #endif
1459 #ifdef VPAES_CAPABLE
1460 if (VPAES_CAPABLE)
1461 {
1462 if (enc)
1463 {
1464 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1465 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1466 }
1467 else
1468 {
1469 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1470 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1471 }
1472
1473 vpaes_set_encrypt_key(key + ctx->key_len/2,
1474 ctx->key_len * 4, &xctx->ks2.ks);
1475 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1476
1477 xctx->xts.key1 = &xctx->ks1;
1478 break;
1479 }
1480 #endif
1481 if (enc)
1482 {
1483 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1484 xctx->xts.block1 = (block128_f)AES_encrypt;
1485 }
1486 else
1487 {
1488 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1489 xctx->xts.block1 = (block128_f)AES_decrypt;
1490 }
1491
1492 AES_set_encrypt_key(key + ctx->key_len/2,
1493 ctx->key_len * 4, &xctx->ks2.ks);
1494 xctx->xts.block2 = (block128_f)AES_encrypt;
1495
1496 xctx->xts.key1 = &xctx->ks1;
1497 } while (0);
1498
1499 if (iv)
1500 {
1501 xctx->xts.key2 = &xctx->ks2;
1502 memcpy(ctx->iv, iv, 16);
1503 }
1504
1505 return 1;
1506 }
1507
1508 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1509 const unsigned char *in, size_t len)
1510 {
1511 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1512 if (!xctx->xts.key1 || !xctx->xts.key2)
1513 return 0;
1514 if (!out || !in || len<AES_BLOCK_SIZE)
1515 return 0;
1516 #ifdef OPENSSL_FIPS
1517 /* Requirement of SP800-38E */
1518 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1519 (len > (1UL<<20)*16))
1520 {
1521 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1522 return 0;
1523 }
1524 #endif
1525 if (xctx->stream)
1526 (*xctx->stream)(in, out, len,
1527 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1528 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1529 ctx->encrypt))
1530 return 0;
1531 return 1;
1532 }
1533
1534 #define aes_xts_cleanup NULL
1535
1536 #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1537 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1538
1539 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1540 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1541
1542 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1543 {
1544 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1545 switch (type)
1546 {
1547 case EVP_CTRL_INIT:
1548 cctx->key_set = 0;
1549 cctx->iv_set = 0;
1550 cctx->L = 8;
1551 cctx->M = 12;
1552 cctx->tag_set = 0;
1553 cctx->len_set = 0;
1554 return 1;
1555
1556 case EVP_CTRL_CCM_SET_IVLEN:
1557 arg = 15 - arg;
1558 case EVP_CTRL_CCM_SET_L:
1559 if (arg < 2 || arg > 8)
1560 return 0;
1561 cctx->L = arg;
1562 return 1;
1563
1564 case EVP_CTRL_CCM_SET_TAG:
1565 if ((arg & 1) || arg < 4 || arg > 16)
1566 return 0;
1567 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1568 return 0;
1569 if (ptr)
1570 {
1571 cctx->tag_set = 1;
1572 memcpy(c->buf, ptr, arg);
1573 }
1574 cctx->M = arg;
1575 return 1;
1576
1577 case EVP_CTRL_CCM_GET_TAG:
1578 if (!c->encrypt || !cctx->tag_set)
1579 return 0;
1580 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1581 return 0;
1582 cctx->tag_set = 0;
1583 cctx->iv_set = 0;
1584 cctx->len_set = 0;
1585 return 1;
1586
1587 default:
1588 return -1;
1589
1590 }
1591 }
1592
1593 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1594 const unsigned char *iv, int enc)
1595 {
1596 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1597 if (!iv && !key)
1598 return 1;
1599 if (key) do
1600 {
1601 #ifdef VPAES_CAPABLE
1602 if (VPAES_CAPABLE)
1603 {
1604 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks.ks);
1605 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1606 &cctx->ks, (block128_f)vpaes_encrypt);
1607 cctx->str = NULL;
1608 cctx->key_set = 1;
1609 break;
1610 }
1611 #endif
1612 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
1613 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1614 &cctx->ks, (block128_f)AES_encrypt);
1615 cctx->str = NULL;
1616 cctx->key_set = 1;
1617 } while (0);
1618 if (iv)
1619 {
1620 memcpy(ctx->iv, iv, 15 - cctx->L);
1621 cctx->iv_set = 1;
1622 }
1623 return 1;
1624 }
1625
1626 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1627 const unsigned char *in, size_t len)
1628 {
1629 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1630 CCM128_CONTEXT *ccm = &cctx->ccm;
1631 /* If not set up, return error */
1632 if (!cctx->iv_set && !cctx->key_set)
1633 return -1;
1634 if (!ctx->encrypt && !cctx->tag_set)
1635 return -1;
1636 if (!out)
1637 {
1638 if (!in)
1639 {
1640 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1641 return -1;
1642 cctx->len_set = 1;
1643 return len;
1644 }
1645 /* If have AAD need message length */
1646 if (!cctx->len_set && len)
1647 return -1;
1648 CRYPTO_ccm128_aad(ccm, in, len);
1649 return len;
1650 }
1651 /* EVP_*Final() doesn't return any data */
1652 if (!in)
1653 return 0;
1654 /* If not set length yet do it */
1655 if (!cctx->len_set)
1656 {
1657 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1658 return -1;
1659 cctx->len_set = 1;
1660 }
1661 if (ctx->encrypt)
1662 {
1663 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1664 cctx->str) :
1665 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1666 return -1;
1667 cctx->tag_set = 1;
1668 return len;
1669 }
1670 else
1671 {
1672 int rv = -1;
1673 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1674 cctx->str) :
1675 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1676 {
1677 unsigned char tag[16];
1678 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1679 {
1680 if (!memcmp(tag, ctx->buf, cctx->M))
1681 rv = len;
1682 }
1683 }
1684 if (rv == -1)
1685 OPENSSL_cleanse(out, len);
1686 cctx->iv_set = 0;
1687 cctx->tag_set = 0;
1688 cctx->len_set = 0;
1689 return rv;
1690 }
1691
1692 }
1693
1694 #define aes_ccm_cleanup NULL
1695
1696 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1697 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1698 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1699
1700 #endif
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