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ARM assembly pack: AES update from master (including bit-sliced module).
[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 #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 #include "modes_lcl.h"
60 #include <openssl/rand.h>
61
62 #ifndef OPENSSL_FIPSCANISTER
63 #undef EVP_CIPH_FLAG_FIPS
64 #define EVP_CIPH_FLAG_FIPS 0
65 #endif
66
67 typedef struct
68 {
69 union { double align; AES_KEY ks; } ks;
70 block128_f block;
71 union {
72 cbc128_f cbc;
73 ctr128_f ctr;
74 } stream;
75 } EVP_AES_KEY;
76
77 typedef struct
78 {
79 union { double align; AES_KEY ks; } ks; /* AES key schedule to use */
80 int key_set; /* Set if key initialised */
81 int iv_set; /* Set if an iv is set */
82 GCM128_CONTEXT gcm;
83 unsigned char *iv; /* Temporary IV store */
84 int ivlen; /* IV length */
85 int taglen;
86 int iv_gen; /* It is OK to generate IVs */
87 int tls_aad_len; /* TLS AAD length */
88 ctr128_f ctr;
89 } EVP_AES_GCM_CTX;
90
91 typedef struct
92 {
93 union { double align; AES_KEY ks; } ks1, ks2; /* AES key schedules to use */
94 XTS128_CONTEXT xts;
95 void (*stream)(const unsigned char *in,
96 unsigned char *out, size_t length,
97 const AES_KEY *key1, const AES_KEY *key2,
98 const unsigned char iv[16]);
99 } EVP_AES_XTS_CTX;
100
101 typedef struct
102 {
103 union { double align; AES_KEY ks; } ks; /* AES key schedule to use */
104 int key_set; /* Set if key initialised */
105 int iv_set; /* Set if an iv is set */
106 int tag_set; /* Set if tag is valid */
107 int len_set; /* Set if message length set */
108 int L, M; /* L and M parameters from RFC3610 */
109 CCM128_CONTEXT ccm;
110 ccm128_f str;
111 } EVP_AES_CCM_CTX;
112
113 #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
114
115 #ifdef VPAES_ASM
116 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
117 AES_KEY *key);
118 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
119 AES_KEY *key);
120
121 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
122 const AES_KEY *key);
123 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
124 const AES_KEY *key);
125
126 void vpaes_cbc_encrypt(const unsigned char *in,
127 unsigned char *out,
128 size_t length,
129 const AES_KEY *key,
130 unsigned char *ivec, int enc);
131 #endif
132 #ifdef BSAES_ASM
133 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
134 size_t length, const AES_KEY *key,
135 unsigned char ivec[16], int enc);
136 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
137 size_t len, const AES_KEY *key,
138 const unsigned char ivec[16]);
139 void bsaes_xts_encrypt(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 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
143 size_t len, const AES_KEY *key1,
144 const AES_KEY *key2, const unsigned char iv[16]);
145 #endif
146 #ifdef AES_CTR_ASM
147 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
148 size_t blocks, const AES_KEY *key,
149 const unsigned char ivec[AES_BLOCK_SIZE]);
150 #endif
151 #ifdef AES_XTS_ASM
152 void AES_xts_encrypt(const char *inp,char *out,size_t len,
153 const AES_KEY *key1, const AES_KEY *key2,
154 const unsigned char iv[16]);
155 void AES_xts_decrypt(const char *inp,char *out,size_t len,
156 const AES_KEY *key1, const AES_KEY *key2,
157 const unsigned char iv[16]);
158 #endif
159
160 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
161 ((defined(__i386) || defined(__i386__) || \
162 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
163 defined(__x86_64) || defined(__x86_64__) || \
164 defined(_M_AMD64) || defined(_M_X64) || \
165 defined(__INTEL__) )
166
167 extern unsigned int OPENSSL_ia32cap_P[];
168
169 #ifdef VPAES_ASM
170 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
171 #endif
172 #ifdef BSAES_ASM
173 #define BSAES_CAPABLE VPAES_CAPABLE
174 #endif
175 /*
176 * AES-NI section
177 */
178 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
179
180 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
181 AES_KEY *key);
182 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
183 AES_KEY *key);
184
185 void aesni_encrypt(const unsigned char *in, unsigned char *out,
186 const AES_KEY *key);
187 void aesni_decrypt(const unsigned char *in, unsigned char *out,
188 const AES_KEY *key);
189
190 void aesni_ecb_encrypt(const unsigned char *in,
191 unsigned char *out,
192 size_t length,
193 const AES_KEY *key,
194 int enc);
195 void aesni_cbc_encrypt(const unsigned char *in,
196 unsigned char *out,
197 size_t length,
198 const AES_KEY *key,
199 unsigned char *ivec, int enc);
200
201 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
202 unsigned char *out,
203 size_t blocks,
204 const void *key,
205 const unsigned char *ivec);
206
207 void aesni_xts_encrypt(const unsigned char *in,
208 unsigned char *out,
209 size_t length,
210 const AES_KEY *key1, const AES_KEY *key2,
211 const unsigned char iv[16]);
212
213 void aesni_xts_decrypt(const unsigned char *in,
214 unsigned char *out,
215 size_t length,
216 const AES_KEY *key1, const AES_KEY *key2,
217 const unsigned char iv[16]);
218
219 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
220 unsigned char *out,
221 size_t blocks,
222 const void *key,
223 const unsigned char ivec[16],
224 unsigned char cmac[16]);
225
226 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
227 unsigned char *out,
228 size_t blocks,
229 const void *key,
230 const unsigned char ivec[16],
231 unsigned char cmac[16]);
232
233 #if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
234 size_t aesni_gcm_encrypt(const unsigned char *in,
235 unsigned char *out,
236 size_t len,
237 const void *key,
238 unsigned char ivec[16],
239 u64 *Xi);
240 #define AES_gcm_encrypt aesni_gcm_encrypt
241 size_t aesni_gcm_decrypt(const unsigned char *in,
242 unsigned char *out,
243 size_t len,
244 const void *key,
245 unsigned char ivec[16],
246 u64 *Xi);
247 #define AES_gcm_decrypt aesni_gcm_decrypt
248 void gcm_ghash_avx(u64 Xi[2],const u128 Htable[16],const u8 *in,size_t len);
249 #define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \
250 gctx->gcm.ghash==gcm_ghash_avx)
251 #define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \
252 gctx->gcm.ghash==gcm_ghash_avx)
253 #undef AES_GCM_ASM2 /* minor size optimization */
254 #endif
255
256 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
257 const unsigned char *iv, int enc)
258 {
259 int ret, mode;
260 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
261
262 mode = ctx->cipher->flags & EVP_CIPH_MODE;
263 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
264 && !enc)
265 {
266 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
267 dat->block = (block128_f)aesni_decrypt;
268 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
269 (cbc128_f)aesni_cbc_encrypt :
270 NULL;
271 }
272 else {
273 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
274 dat->block = (block128_f)aesni_encrypt;
275 if (mode==EVP_CIPH_CBC_MODE)
276 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
277 else if (mode==EVP_CIPH_CTR_MODE)
278 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
279 else
280 dat->stream.cbc = NULL;
281 }
282
283 if(ret < 0)
284 {
285 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
286 return 0;
287 }
288
289 return 1;
290 }
291
292 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
293 const unsigned char *in, size_t len)
294 {
295 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
296
297 return 1;
298 }
299
300 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
301 const unsigned char *in, size_t len)
302 {
303 size_t bl = ctx->cipher->block_size;
304
305 if (len<bl) return 1;
306
307 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
308
309 return 1;
310 }
311
312 #define aesni_ofb_cipher aes_ofb_cipher
313 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
314 const unsigned char *in,size_t len);
315
316 #define aesni_cfb_cipher aes_cfb_cipher
317 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
318 const unsigned char *in,size_t len);
319
320 #define aesni_cfb8_cipher aes_cfb8_cipher
321 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
322 const unsigned char *in,size_t len);
323
324 #define aesni_cfb1_cipher aes_cfb1_cipher
325 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
326 const unsigned char *in,size_t len);
327
328 #define aesni_ctr_cipher aes_ctr_cipher
329 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
330 const unsigned char *in, size_t len);
331
332 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
333 const unsigned char *iv, int enc)
334 {
335 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
336 if (!iv && !key)
337 return 1;
338 if (key)
339 {
340 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
341 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
342 (block128_f)aesni_encrypt);
343 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
344 /* If we have an iv can set it directly, otherwise use
345 * saved IV.
346 */
347 if (iv == NULL && gctx->iv_set)
348 iv = gctx->iv;
349 if (iv)
350 {
351 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
352 gctx->iv_set = 1;
353 }
354 gctx->key_set = 1;
355 }
356 else
357 {
358 /* If key set use IV, otherwise copy */
359 if (gctx->key_set)
360 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
361 else
362 memcpy(gctx->iv, iv, gctx->ivlen);
363 gctx->iv_set = 1;
364 gctx->iv_gen = 0;
365 }
366 return 1;
367 }
368
369 #define aesni_gcm_cipher aes_gcm_cipher
370 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
371 const unsigned char *in, size_t len);
372
373 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
374 const unsigned char *iv, int enc)
375 {
376 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
377 if (!iv && !key)
378 return 1;
379
380 if (key)
381 {
382 /* key_len is two AES keys */
383 if (enc)
384 {
385 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
386 xctx->xts.block1 = (block128_f)aesni_encrypt;
387 xctx->stream = aesni_xts_encrypt;
388 }
389 else
390 {
391 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
392 xctx->xts.block1 = (block128_f)aesni_decrypt;
393 xctx->stream = aesni_xts_decrypt;
394 }
395
396 aesni_set_encrypt_key(key + ctx->key_len/2,
397 ctx->key_len * 4, &xctx->ks2.ks);
398 xctx->xts.block2 = (block128_f)aesni_encrypt;
399
400 xctx->xts.key1 = &xctx->ks1;
401 }
402
403 if (iv)
404 {
405 xctx->xts.key2 = &xctx->ks2;
406 memcpy(ctx->iv, iv, 16);
407 }
408
409 return 1;
410 }
411
412 #define aesni_xts_cipher aes_xts_cipher
413 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
414 const unsigned char *in, size_t len);
415
416 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
417 const unsigned char *iv, int enc)
418 {
419 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
420 if (!iv && !key)
421 return 1;
422 if (key)
423 {
424 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
425 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
426 &cctx->ks, (block128_f)aesni_encrypt);
427 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
428 (ccm128_f)aesni_ccm64_decrypt_blocks;
429 cctx->key_set = 1;
430 }
431 if (iv)
432 {
433 memcpy(ctx->iv, iv, 15 - cctx->L);
434 cctx->iv_set = 1;
435 }
436 return 1;
437 }
438
439 #define aesni_ccm_cipher aes_ccm_cipher
440 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
441 const unsigned char *in, size_t len);
442
443 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
444 static const EVP_CIPHER aesni_##keylen##_##mode = { \
445 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
446 flags|EVP_CIPH_##MODE##_MODE, \
447 aesni_init_key, \
448 aesni_##mode##_cipher, \
449 NULL, \
450 sizeof(EVP_AES_KEY), \
451 NULL,NULL,NULL,NULL }; \
452 static const EVP_CIPHER aes_##keylen##_##mode = { \
453 nid##_##keylen##_##nmode,blocksize, \
454 keylen/8,ivlen, \
455 flags|EVP_CIPH_##MODE##_MODE, \
456 aes_init_key, \
457 aes_##mode##_cipher, \
458 NULL, \
459 sizeof(EVP_AES_KEY), \
460 NULL,NULL,NULL,NULL }; \
461 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
462 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
463
464 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
465 static const EVP_CIPHER aesni_##keylen##_##mode = { \
466 nid##_##keylen##_##mode,blocksize, \
467 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
468 flags|EVP_CIPH_##MODE##_MODE, \
469 aesni_##mode##_init_key, \
470 aesni_##mode##_cipher, \
471 aes_##mode##_cleanup, \
472 sizeof(EVP_AES_##MODE##_CTX), \
473 NULL,NULL,aes_##mode##_ctrl,NULL }; \
474 static 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 }; \
483 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
484 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
485
486 #elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
487
488 #include "sparc_arch.h"
489
490 extern unsigned int OPENSSL_sparcv9cap_P[];
491
492 #define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES)
493
494 void aes_t4_set_encrypt_key (const unsigned char *key, int bits,
495 AES_KEY *ks);
496 void aes_t4_set_decrypt_key (const unsigned char *key, int bits,
497 AES_KEY *ks);
498 void aes_t4_encrypt (const unsigned char *in, unsigned char *out,
499 const AES_KEY *key);
500 void aes_t4_decrypt (const unsigned char *in, unsigned char *out,
501 const AES_KEY *key);
502 /*
503 * Key-length specific subroutines were chosen for following reason.
504 * Each SPARC T4 core can execute up to 8 threads which share core's
505 * resources. Loading as much key material to registers allows to
506 * minimize references to shared memory interface, as well as amount
507 * of instructions in inner loops [much needed on T4]. But then having
508 * non-key-length specific routines would require conditional branches
509 * either in inner loops or on subroutines' entries. Former is hardly
510 * acceptable, while latter means code size increase to size occupied
511 * by multiple key-length specfic subroutines, so why fight?
512 */
513 void aes128_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
514 size_t len, const AES_KEY *key,
515 unsigned char *ivec);
516 void aes128_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
517 size_t len, const AES_KEY *key,
518 unsigned char *ivec);
519 void aes192_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
520 size_t len, const AES_KEY *key,
521 unsigned char *ivec);
522 void aes192_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
523 size_t len, const AES_KEY *key,
524 unsigned char *ivec);
525 void aes256_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
526 size_t len, const AES_KEY *key,
527 unsigned char *ivec);
528 void aes256_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
529 size_t len, const AES_KEY *key,
530 unsigned char *ivec);
531 void aes128_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
532 size_t blocks, const AES_KEY *key,
533 unsigned char *ivec);
534 void aes192_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
535 size_t blocks, const AES_KEY *key,
536 unsigned char *ivec);
537 void aes256_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
538 size_t blocks, const AES_KEY *key,
539 unsigned char *ivec);
540 void aes128_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
541 size_t blocks, const AES_KEY *key1,
542 const AES_KEY *key2, const unsigned char *ivec);
543 void aes128_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
544 size_t blocks, const AES_KEY *key1,
545 const AES_KEY *key2, const unsigned char *ivec);
546 void aes256_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
547 size_t blocks, const AES_KEY *key1,
548 const AES_KEY *key2, const unsigned char *ivec);
549 void aes256_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
550 size_t blocks, const AES_KEY *key1,
551 const AES_KEY *key2, const unsigned char *ivec);
552
553 static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
554 const unsigned char *iv, int enc)
555 {
556 int ret, mode, bits;
557 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
558
559 mode = ctx->cipher->flags & EVP_CIPH_MODE;
560 bits = ctx->key_len*8;
561 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
562 && !enc)
563 {
564 ret = 0;
565 aes_t4_set_decrypt_key(key, bits, ctx->cipher_data);
566 dat->block = (block128_f)aes_t4_decrypt;
567 switch (bits) {
568 case 128:
569 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
570 (cbc128_f)aes128_t4_cbc_decrypt :
571 NULL;
572 break;
573 case 192:
574 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
575 (cbc128_f)aes192_t4_cbc_decrypt :
576 NULL;
577 break;
578 case 256:
579 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
580 (cbc128_f)aes256_t4_cbc_decrypt :
581 NULL;
582 break;
583 default:
584 ret = -1;
585 }
586 }
587 else {
588 ret = 0;
589 aes_t4_set_encrypt_key(key, bits, ctx->cipher_data);
590 dat->block = (block128_f)aes_t4_encrypt;
591 switch (bits) {
592 case 128:
593 if (mode==EVP_CIPH_CBC_MODE)
594 dat->stream.cbc = (cbc128_f)aes128_t4_cbc_encrypt;
595 else if (mode==EVP_CIPH_CTR_MODE)
596 dat->stream.ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
597 else
598 dat->stream.cbc = NULL;
599 break;
600 case 192:
601 if (mode==EVP_CIPH_CBC_MODE)
602 dat->stream.cbc = (cbc128_f)aes192_t4_cbc_encrypt;
603 else if (mode==EVP_CIPH_CTR_MODE)
604 dat->stream.ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
605 else
606 dat->stream.cbc = NULL;
607 break;
608 case 256:
609 if (mode==EVP_CIPH_CBC_MODE)
610 dat->stream.cbc = (cbc128_f)aes256_t4_cbc_encrypt;
611 else if (mode==EVP_CIPH_CTR_MODE)
612 dat->stream.ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
613 else
614 dat->stream.cbc = NULL;
615 break;
616 default:
617 ret = -1;
618 }
619 }
620
621 if(ret < 0)
622 {
623 EVPerr(EVP_F_AES_T4_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
624 return 0;
625 }
626
627 return 1;
628 }
629
630 #define aes_t4_cbc_cipher aes_cbc_cipher
631 static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
632 const unsigned char *in, size_t len);
633
634 #define aes_t4_ecb_cipher aes_ecb_cipher
635 static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
636 const unsigned char *in, size_t len);
637
638 #define aes_t4_ofb_cipher aes_ofb_cipher
639 static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
640 const unsigned char *in,size_t len);
641
642 #define aes_t4_cfb_cipher aes_cfb_cipher
643 static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
644 const unsigned char *in,size_t len);
645
646 #define aes_t4_cfb8_cipher aes_cfb8_cipher
647 static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
648 const unsigned char *in,size_t len);
649
650 #define aes_t4_cfb1_cipher aes_cfb1_cipher
651 static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
652 const unsigned char *in,size_t len);
653
654 #define aes_t4_ctr_cipher aes_ctr_cipher
655 static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
656 const unsigned char *in, size_t len);
657
658 static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
659 const unsigned char *iv, int enc)
660 {
661 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
662 if (!iv && !key)
663 return 1;
664 if (key)
665 {
666 int bits = ctx->key_len * 8;
667 aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
668 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
669 (block128_f)aes_t4_encrypt);
670 switch (bits) {
671 case 128:
672 gctx->ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
673 break;
674 case 192:
675 gctx->ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
676 break;
677 case 256:
678 gctx->ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
679 break;
680 default:
681 return 0;
682 }
683 /* If we have an iv can set it directly, otherwise use
684 * saved IV.
685 */
686 if (iv == NULL && gctx->iv_set)
687 iv = gctx->iv;
688 if (iv)
689 {
690 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
691 gctx->iv_set = 1;
692 }
693 gctx->key_set = 1;
694 }
695 else
696 {
697 /* If key set use IV, otherwise copy */
698 if (gctx->key_set)
699 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
700 else
701 memcpy(gctx->iv, iv, gctx->ivlen);
702 gctx->iv_set = 1;
703 gctx->iv_gen = 0;
704 }
705 return 1;
706 }
707
708 #define aes_t4_gcm_cipher aes_gcm_cipher
709 static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
710 const unsigned char *in, size_t len);
711
712 static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
713 const unsigned char *iv, int enc)
714 {
715 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
716 if (!iv && !key)
717 return 1;
718
719 if (key)
720 {
721 int bits = ctx->key_len * 4;
722 xctx->stream = NULL;
723 /* key_len is two AES keys */
724 if (enc)
725 {
726 aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
727 xctx->xts.block1 = (block128_f)aes_t4_encrypt;
728 switch (bits) {
729 case 128:
730 xctx->stream = aes128_t4_xts_encrypt;
731 break;
732 #if 0 /* not yet */
733 case 192:
734 xctx->stream = aes192_t4_xts_encrypt;
735 break;
736 #endif
737 case 256:
738 xctx->stream = aes256_t4_xts_encrypt;
739 break;
740 default:
741 return 0;
742 }
743 }
744 else
745 {
746 aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
747 xctx->xts.block1 = (block128_f)aes_t4_decrypt;
748 switch (bits) {
749 case 128:
750 xctx->stream = aes128_t4_xts_decrypt;
751 break;
752 #if 0 /* not yet */
753 case 192:
754 xctx->stream = aes192_t4_xts_decrypt;
755 break;
756 #endif
757 case 256:
758 xctx->stream = aes256_t4_xts_decrypt;
759 break;
760 default:
761 return 0;
762 }
763 }
764
765 aes_t4_set_encrypt_key(key + ctx->key_len/2,
766 ctx->key_len * 4, &xctx->ks2.ks);
767 xctx->xts.block2 = (block128_f)aes_t4_encrypt;
768
769 xctx->xts.key1 = &xctx->ks1;
770 }
771
772 if (iv)
773 {
774 xctx->xts.key2 = &xctx->ks2;
775 memcpy(ctx->iv, iv, 16);
776 }
777
778 return 1;
779 }
780
781 #define aes_t4_xts_cipher aes_xts_cipher
782 static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
783 const unsigned char *in, size_t len);
784
785 static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
786 const unsigned char *iv, int enc)
787 {
788 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
789 if (!iv && !key)
790 return 1;
791 if (key)
792 {
793 int bits = ctx->key_len * 8;
794 aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
795 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
796 &cctx->ks, (block128_f)aes_t4_encrypt);
797 #if 0 /* not yet */
798 switch (bits) {
799 case 128:
800 cctx->str = enc?(ccm128_f)aes128_t4_ccm64_encrypt :
801 (ccm128_f)ae128_t4_ccm64_decrypt;
802 break;
803 case 192:
804 cctx->str = enc?(ccm128_f)aes192_t4_ccm64_encrypt :
805 (ccm128_f)ae192_t4_ccm64_decrypt;
806 break;
807 case 256:
808 cctx->str = enc?(ccm128_f)aes256_t4_ccm64_encrypt :
809 (ccm128_f)ae256_t4_ccm64_decrypt;
810 break;
811 default:
812 return 0;
813 }
814 #endif
815 cctx->key_set = 1;
816 }
817 if (iv)
818 {
819 memcpy(ctx->iv, iv, 15 - cctx->L);
820 cctx->iv_set = 1;
821 }
822 return 1;
823 }
824
825 #define aes_t4_ccm_cipher aes_ccm_cipher
826 static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
827 const unsigned char *in, size_t len);
828
829 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
830 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
831 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
832 flags|EVP_CIPH_##MODE##_MODE, \
833 aes_t4_init_key, \
834 aes_t4_##mode##_cipher, \
835 NULL, \
836 sizeof(EVP_AES_KEY), \
837 NULL,NULL,NULL,NULL }; \
838 static const EVP_CIPHER aes_##keylen##_##mode = { \
839 nid##_##keylen##_##nmode,blocksize, \
840 keylen/8,ivlen, \
841 flags|EVP_CIPH_##MODE##_MODE, \
842 aes_init_key, \
843 aes_##mode##_cipher, \
844 NULL, \
845 sizeof(EVP_AES_KEY), \
846 NULL,NULL,NULL,NULL }; \
847 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
848 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
849
850 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
851 static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
852 nid##_##keylen##_##mode,blocksize, \
853 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
854 flags|EVP_CIPH_##MODE##_MODE, \
855 aes_t4_##mode##_init_key, \
856 aes_t4_##mode##_cipher, \
857 aes_##mode##_cleanup, \
858 sizeof(EVP_AES_##MODE##_CTX), \
859 NULL,NULL,aes_##mode##_ctrl,NULL }; \
860 static const EVP_CIPHER aes_##keylen##_##mode = { \
861 nid##_##keylen##_##mode,blocksize, \
862 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
863 flags|EVP_CIPH_##MODE##_MODE, \
864 aes_##mode##_init_key, \
865 aes_##mode##_cipher, \
866 aes_##mode##_cleanup, \
867 sizeof(EVP_AES_##MODE##_CTX), \
868 NULL,NULL,aes_##mode##_ctrl,NULL }; \
869 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
870 { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
871
872 #else
873
874 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
875 static const EVP_CIPHER aes_##keylen##_##mode = { \
876 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
877 flags|EVP_CIPH_##MODE##_MODE, \
878 aes_init_key, \
879 aes_##mode##_cipher, \
880 NULL, \
881 sizeof(EVP_AES_KEY), \
882 NULL,NULL,NULL,NULL }; \
883 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
884 { return &aes_##keylen##_##mode; }
885
886 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
887 static const EVP_CIPHER aes_##keylen##_##mode = { \
888 nid##_##keylen##_##mode,blocksize, \
889 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
890 flags|EVP_CIPH_##MODE##_MODE, \
891 aes_##mode##_init_key, \
892 aes_##mode##_cipher, \
893 aes_##mode##_cleanup, \
894 sizeof(EVP_AES_##MODE##_CTX), \
895 NULL,NULL,aes_##mode##_ctrl,NULL }; \
896 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
897 { return &aes_##keylen##_##mode; }
898 #endif
899
900 #if defined(AES_ASM) && defined(BSAES_ASM) && (defined(__arm__) || defined(__arm))
901 #include "arm_arch.h"
902 #if __ARM_ARCH__>=7
903 #define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
904 #endif
905 #endif
906
907 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
908 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
909 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
910 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
911 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
912 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
913 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
914 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
915
916 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
917 const unsigned char *iv, int enc)
918 {
919 int ret, mode;
920 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
921
922 mode = ctx->cipher->flags & EVP_CIPH_MODE;
923 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
924 && !enc)
925 #ifdef BSAES_CAPABLE
926 if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
927 {
928 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
929 dat->block = (block128_f)AES_decrypt;
930 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
931 }
932 else
933 #endif
934 #ifdef VPAES_CAPABLE
935 if (VPAES_CAPABLE)
936 {
937 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
938 dat->block = (block128_f)vpaes_decrypt;
939 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
940 (cbc128_f)vpaes_cbc_encrypt :
941 NULL;
942 }
943 else
944 #endif
945 {
946 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
947 dat->block = (block128_f)AES_decrypt;
948 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
949 (cbc128_f)AES_cbc_encrypt :
950 NULL;
951 }
952 else
953 #ifdef BSAES_CAPABLE
954 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
955 {
956 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
957 dat->block = (block128_f)AES_encrypt;
958 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
959 }
960 else
961 #endif
962 #ifdef VPAES_CAPABLE
963 if (VPAES_CAPABLE)
964 {
965 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
966 dat->block = (block128_f)vpaes_encrypt;
967 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
968 (cbc128_f)vpaes_cbc_encrypt :
969 NULL;
970 }
971 else
972 #endif
973 {
974 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
975 dat->block = (block128_f)AES_encrypt;
976 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
977 (cbc128_f)AES_cbc_encrypt :
978 NULL;
979 #ifdef AES_CTR_ASM
980 if (mode==EVP_CIPH_CTR_MODE)
981 dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
982 #endif
983 }
984
985 if(ret < 0)
986 {
987 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
988 return 0;
989 }
990
991 return 1;
992 }
993
994 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
995 const unsigned char *in, size_t len)
996 {
997 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
998
999 if (dat->stream.cbc)
1000 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
1001 else if (ctx->encrypt)
1002 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
1003 else
1004 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
1005
1006 return 1;
1007 }
1008
1009 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1010 const unsigned char *in, size_t len)
1011 {
1012 size_t bl = ctx->cipher->block_size;
1013 size_t i;
1014 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1015
1016 if (len<bl) return 1;
1017
1018 for (i=0,len-=bl;i<=len;i+=bl)
1019 (*dat->block)(in+i,out+i,&dat->ks);
1020
1021 return 1;
1022 }
1023
1024 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1025 const unsigned char *in,size_t len)
1026 {
1027 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1028
1029 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
1030 ctx->iv,&ctx->num,dat->block);
1031 return 1;
1032 }
1033
1034 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1035 const unsigned char *in,size_t len)
1036 {
1037 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1038
1039 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
1040 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1041 return 1;
1042 }
1043
1044 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1045 const unsigned char *in,size_t len)
1046 {
1047 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1048
1049 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
1050 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1051 return 1;
1052 }
1053
1054 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
1055 const unsigned char *in,size_t len)
1056 {
1057 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1058
1059 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
1060 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
1061 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1062 return 1;
1063 }
1064
1065 while (len>=MAXBITCHUNK) {
1066 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
1067 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1068 len-=MAXBITCHUNK;
1069 }
1070 if (len)
1071 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
1072 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
1073
1074 return 1;
1075 }
1076
1077 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
1078 const unsigned char *in, size_t len)
1079 {
1080 unsigned int num = ctx->num;
1081 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
1082
1083 if (dat->stream.ctr)
1084 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
1085 ctx->iv,ctx->buf,&num,dat->stream.ctr);
1086 else
1087 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
1088 ctx->iv,ctx->buf,&num,dat->block);
1089 ctx->num = (size_t)num;
1090 return 1;
1091 }
1092
1093 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
1094 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
1095 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
1096
1097 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
1098 {
1099 EVP_AES_GCM_CTX *gctx = c->cipher_data;
1100 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
1101 if (gctx->iv != c->iv)
1102 OPENSSL_free(gctx->iv);
1103 return 1;
1104 }
1105
1106 /* increment counter (64-bit int) by 1 */
1107 static void ctr64_inc(unsigned char *counter) {
1108 int n=8;
1109 unsigned char c;
1110
1111 do {
1112 --n;
1113 c = counter[n];
1114 ++c;
1115 counter[n] = c;
1116 if (c) return;
1117 } while (n);
1118 }
1119
1120 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1121 {
1122 EVP_AES_GCM_CTX *gctx = c->cipher_data;
1123 switch (type)
1124 {
1125 case EVP_CTRL_INIT:
1126 gctx->key_set = 0;
1127 gctx->iv_set = 0;
1128 gctx->ivlen = c->cipher->iv_len;
1129 gctx->iv = c->iv;
1130 gctx->taglen = -1;
1131 gctx->iv_gen = 0;
1132 gctx->tls_aad_len = -1;
1133 return 1;
1134
1135 case EVP_CTRL_GCM_SET_IVLEN:
1136 if (arg <= 0)
1137 return 0;
1138 #ifdef OPENSSL_FIPSCANISTER
1139 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
1140 && arg < 12)
1141 return 0;
1142 #endif
1143 /* Allocate memory for IV if needed */
1144 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
1145 {
1146 if (gctx->iv != c->iv)
1147 OPENSSL_free(gctx->iv);
1148 gctx->iv = OPENSSL_malloc(arg);
1149 if (!gctx->iv)
1150 return 0;
1151 }
1152 gctx->ivlen = arg;
1153 return 1;
1154
1155 case EVP_CTRL_GCM_SET_TAG:
1156 if (arg <= 0 || arg > 16 || c->encrypt)
1157 return 0;
1158 memcpy(c->buf, ptr, arg);
1159 gctx->taglen = arg;
1160 return 1;
1161
1162 case EVP_CTRL_GCM_GET_TAG:
1163 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
1164 return 0;
1165 memcpy(ptr, c->buf, arg);
1166 return 1;
1167
1168 case EVP_CTRL_GCM_SET_IV_FIXED:
1169 /* Special case: -1 length restores whole IV */
1170 if (arg == -1)
1171 {
1172 memcpy(gctx->iv, ptr, gctx->ivlen);
1173 gctx->iv_gen = 1;
1174 return 1;
1175 }
1176 /* Fixed field must be at least 4 bytes and invocation field
1177 * at least 8.
1178 */
1179 if ((arg < 4) || (gctx->ivlen - arg) < 8)
1180 return 0;
1181 if (arg)
1182 memcpy(gctx->iv, ptr, arg);
1183 if (c->encrypt &&
1184 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
1185 return 0;
1186 gctx->iv_gen = 1;
1187 return 1;
1188
1189 case EVP_CTRL_GCM_IV_GEN:
1190 if (gctx->iv_gen == 0 || gctx->key_set == 0)
1191 return 0;
1192 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1193 if (arg <= 0 || arg > gctx->ivlen)
1194 arg = gctx->ivlen;
1195 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
1196 /* Invocation field will be at least 8 bytes in size and
1197 * so no need to check wrap around or increment more than
1198 * last 8 bytes.
1199 */
1200 ctr64_inc(gctx->iv + gctx->ivlen - 8);
1201 gctx->iv_set = 1;
1202 return 1;
1203
1204 case EVP_CTRL_GCM_SET_IV_INV:
1205 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
1206 return 0;
1207 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
1208 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1209 gctx->iv_set = 1;
1210 return 1;
1211
1212 case EVP_CTRL_AEAD_TLS1_AAD:
1213 /* Save the AAD for later use */
1214 if (arg != 13)
1215 return 0;
1216 memcpy(c->buf, ptr, arg);
1217 gctx->tls_aad_len = arg;
1218 {
1219 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
1220 /* Correct length for explicit IV */
1221 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1222 /* If decrypting correct for tag too */
1223 if (!c->encrypt)
1224 len -= EVP_GCM_TLS_TAG_LEN;
1225 c->buf[arg-2] = len>>8;
1226 c->buf[arg-1] = len & 0xff;
1227 }
1228 /* Extra padding: tag appended to record */
1229 return EVP_GCM_TLS_TAG_LEN;
1230
1231 default:
1232 return -1;
1233
1234 }
1235 }
1236
1237 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1238 const unsigned char *iv, int enc)
1239 {
1240 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1241 if (!iv && !key)
1242 return 1;
1243 if (key)
1244 { do {
1245 #ifdef BSAES_CAPABLE
1246 if (BSAES_CAPABLE)
1247 {
1248 AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1249 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1250 (block128_f)AES_encrypt);
1251 gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
1252 break;
1253 }
1254 else
1255 #endif
1256 #ifdef VPAES_CAPABLE
1257 if (VPAES_CAPABLE)
1258 {
1259 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
1260 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1261 (block128_f)vpaes_encrypt);
1262 gctx->ctr = NULL;
1263 break;
1264 }
1265 else
1266 #endif
1267 (void)0; /* terminate potentially open 'else' */
1268
1269 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
1270 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1271 #ifdef AES_CTR_ASM
1272 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
1273 #else
1274 gctx->ctr = NULL;
1275 #endif
1276 } while (0);
1277
1278 /* If we have an iv can set it directly, otherwise use
1279 * saved IV.
1280 */
1281 if (iv == NULL && gctx->iv_set)
1282 iv = gctx->iv;
1283 if (iv)
1284 {
1285 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1286 gctx->iv_set = 1;
1287 }
1288 gctx->key_set = 1;
1289 }
1290 else
1291 {
1292 /* If key set use IV, otherwise copy */
1293 if (gctx->key_set)
1294 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1295 else
1296 memcpy(gctx->iv, iv, gctx->ivlen);
1297 gctx->iv_set = 1;
1298 gctx->iv_gen = 0;
1299 }
1300 return 1;
1301 }
1302
1303 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1304 * followed by the payload and finally the tag. On encrypt generate IV,
1305 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1306 * and verify tag.
1307 */
1308
1309 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1310 const unsigned char *in, size_t len)
1311 {
1312 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1313 int rv = -1;
1314 /* Encrypt/decrypt must be performed in place */
1315 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
1316 return -1;
1317 /* Set IV from start of buffer or generate IV and write to start
1318 * of buffer.
1319 */
1320 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1321 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1322 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1323 goto err;
1324 /* Use saved AAD */
1325 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1326 goto err;
1327 /* Fix buffer and length to point to payload */
1328 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1329 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1330 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1331 if (ctx->encrypt)
1332 {
1333 /* Encrypt payload */
1334 if (gctx->ctr)
1335 {
1336 size_t bulk=0;
1337 #if defined(AES_GCM_ASM)
1338 if (len>=32 && AES_GCM_ASM(gctx))
1339 {
1340 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
1341 return -1;
1342
1343 bulk = AES_gcm_encrypt(in,out,len,
1344 gctx->gcm.key,
1345 gctx->gcm.Yi.c,
1346 gctx->gcm.Xi.u);
1347 gctx->gcm.len.u[1] += bulk;
1348 }
1349 #endif
1350 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1351 in +bulk,
1352 out+bulk,
1353 len-bulk,
1354 gctx->ctr))
1355 goto err;
1356 }
1357 else {
1358 size_t bulk=0;
1359 #if defined(AES_GCM_ASM2)
1360 if (len>=32 && AES_GCM_ASM2(gctx))
1361 {
1362 if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
1363 return -1;
1364
1365 bulk = AES_gcm_encrypt(in,out,len,
1366 gctx->gcm.key,
1367 gctx->gcm.Yi.c,
1368 gctx->gcm.Xi.u);
1369 gctx->gcm.len.u[1] += bulk;
1370 }
1371 #endif
1372 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1373 in +bulk,
1374 out+bulk,
1375 len-bulk))
1376 goto err;
1377 }
1378 out += len;
1379 /* Finally write tag */
1380 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1381 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1382 }
1383 else
1384 {
1385 /* Decrypt */
1386 if (gctx->ctr)
1387 {
1388 size_t bulk=0;
1389 #if defined(AES_GCM_ASM)
1390 if (len>=16 && AES_GCM_ASM(gctx))
1391 {
1392 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1393 return -1;
1394
1395 bulk = AES_gcm_decrypt(in,out,len,
1396 gctx->gcm.key,
1397 gctx->gcm.Yi.c,
1398 gctx->gcm.Xi.u);
1399 gctx->gcm.len.u[1] += bulk;
1400 }
1401 #endif
1402 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1403 in +bulk,
1404 out+bulk,
1405 len-bulk,
1406 gctx->ctr))
1407 goto err;
1408 }
1409 else {
1410 size_t bulk=0;
1411 #if defined(AES_GCM_ASM2)
1412 if (len>=16 && AES_GCM_ASM2(gctx))
1413 {
1414 if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
1415 return -1;
1416
1417 bulk = AES_gcm_decrypt(in,out,len,
1418 gctx->gcm.key,
1419 gctx->gcm.Yi.c,
1420 gctx->gcm.Xi.u);
1421 gctx->gcm.len.u[1] += bulk;
1422 }
1423 #endif
1424 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1425 in +bulk,
1426 out+bulk,
1427 len-bulk))
1428 goto err;
1429 }
1430 /* Retrieve tag */
1431 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1432 EVP_GCM_TLS_TAG_LEN);
1433 /* If tag mismatch wipe buffer */
1434 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1435 {
1436 OPENSSL_cleanse(out, len);
1437 goto err;
1438 }
1439 rv = len;
1440 }
1441
1442 err:
1443 gctx->iv_set = 0;
1444 gctx->tls_aad_len = -1;
1445 return rv;
1446 }
1447
1448 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1449 const unsigned char *in, size_t len)
1450 {
1451 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1452 /* If not set up, return error */
1453 if (!gctx->key_set)
1454 return -1;
1455
1456 if (gctx->tls_aad_len >= 0)
1457 return aes_gcm_tls_cipher(ctx, out, in, len);
1458
1459 if (!gctx->iv_set)
1460 return -1;
1461 if (in)
1462 {
1463 if (out == NULL)
1464 {
1465 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1466 return -1;
1467 }
1468 else if (ctx->encrypt)
1469 {
1470 if (gctx->ctr)
1471 {
1472 size_t bulk=0;
1473 #if defined(AES_GCM_ASM)
1474 if (len>=32 && AES_GCM_ASM(gctx))
1475 {
1476 size_t res = (16-gctx->gcm.mres)%16;
1477
1478 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1479 in,out,res))
1480 return -1;
1481
1482 bulk = AES_gcm_encrypt(in+res,
1483 out+res,len-res, gctx->gcm.key,
1484 gctx->gcm.Yi.c,
1485 gctx->gcm.Xi.u);
1486 gctx->gcm.len.u[1] += bulk;
1487 bulk += res;
1488 }
1489 #endif
1490 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
1491 in +bulk,
1492 out+bulk,
1493 len-bulk,
1494 gctx->ctr))
1495 return -1;
1496 }
1497 else {
1498 size_t bulk=0;
1499 #if defined(AES_GCM_ASM2)
1500 if (len>=32 && AES_GCM_ASM2(gctx))
1501 {
1502 size_t res = (16-gctx->gcm.mres)%16;
1503
1504 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1505 in,out,res))
1506 return -1;
1507
1508 bulk = AES_gcm_encrypt(in+res,
1509 out+res,len-res, gctx->gcm.key,
1510 gctx->gcm.Yi.c,
1511 gctx->gcm.Xi.u);
1512 gctx->gcm.len.u[1] += bulk;
1513 bulk += res;
1514 }
1515 #endif
1516 if (CRYPTO_gcm128_encrypt(&gctx->gcm,
1517 in +bulk,
1518 out+bulk,
1519 len-bulk))
1520 return -1;
1521 }
1522 }
1523 else
1524 {
1525 if (gctx->ctr)
1526 {
1527 size_t bulk=0;
1528 #if defined(AES_GCM_ASM)
1529 if (len>=16 && AES_GCM_ASM(gctx))
1530 {
1531 size_t res = (16-gctx->gcm.mres)%16;
1532
1533 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1534 in,out,res))
1535 return -1;
1536
1537 bulk = AES_gcm_decrypt(in+res,
1538 out+res,len-res,
1539 gctx->gcm.key,
1540 gctx->gcm.Yi.c,
1541 gctx->gcm.Xi.u);
1542 gctx->gcm.len.u[1] += bulk;
1543 bulk += res;
1544 }
1545 #endif
1546 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1547 in +bulk,
1548 out+bulk,
1549 len-bulk,
1550 gctx->ctr))
1551 return -1;
1552 }
1553 else {
1554 size_t bulk=0;
1555 #if defined(AES_GCM_ASM2)
1556 if (len>=16 && AES_GCM_ASM2(gctx))
1557 {
1558 size_t res = (16-gctx->gcm.mres)%16;
1559
1560 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1561 in,out,res))
1562 return -1;
1563
1564 bulk = AES_gcm_decrypt(in+res,
1565 out+res,len-res,
1566 gctx->gcm.key,
1567 gctx->gcm.Yi.c,
1568 gctx->gcm.Xi.u);
1569 gctx->gcm.len.u[1] += bulk;
1570 bulk += res;
1571 }
1572 #endif
1573 if (CRYPTO_gcm128_decrypt(&gctx->gcm,
1574 in +bulk,
1575 out+bulk,
1576 len-bulk))
1577 return -1;
1578 }
1579 }
1580 return len;
1581 }
1582 else
1583 {
1584 if (!ctx->encrypt)
1585 {
1586 if (gctx->taglen < 0)
1587 return -1;
1588 if (CRYPTO_gcm128_finish(&gctx->gcm,
1589 ctx->buf, gctx->taglen) != 0)
1590 return -1;
1591 gctx->iv_set = 0;
1592 return 0;
1593 }
1594 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1595 gctx->taglen = 16;
1596 /* Don't reuse the IV */
1597 gctx->iv_set = 0;
1598 return 0;
1599 }
1600
1601 }
1602
1603 #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1604 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1605 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1606
1607 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1608 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1609 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1610 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1611 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1612 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1613
1614 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1615 {
1616 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1617 if (type != EVP_CTRL_INIT)
1618 return -1;
1619 /* key1 and key2 are used as an indicator both key and IV are set */
1620 xctx->xts.key1 = NULL;
1621 xctx->xts.key2 = NULL;
1622 return 1;
1623 }
1624
1625 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1626 const unsigned char *iv, int enc)
1627 {
1628 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1629 if (!iv && !key)
1630 return 1;
1631
1632 if (key) do
1633 {
1634 #ifdef AES_XTS_ASM
1635 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1636 #else
1637 xctx->stream = NULL;
1638 #endif
1639 /* key_len is two AES keys */
1640 #ifdef BSAES_CAPABLE
1641 if (BSAES_CAPABLE)
1642 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1643 else
1644 #endif
1645 #ifdef VPAES_CAPABLE
1646 if (VPAES_CAPABLE)
1647 {
1648 if (enc)
1649 {
1650 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1651 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1652 }
1653 else
1654 {
1655 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1656 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1657 }
1658
1659 vpaes_set_encrypt_key(key + ctx->key_len/2,
1660 ctx->key_len * 4, &xctx->ks2.ks);
1661 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1662
1663 xctx->xts.key1 = &xctx->ks1;
1664 break;
1665 }
1666 else
1667 #endif
1668 (void)0; /* terminate potentially open 'else' */
1669
1670 if (enc)
1671 {
1672 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1673 xctx->xts.block1 = (block128_f)AES_encrypt;
1674 }
1675 else
1676 {
1677 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
1678 xctx->xts.block1 = (block128_f)AES_decrypt;
1679 }
1680
1681 AES_set_encrypt_key(key + ctx->key_len/2,
1682 ctx->key_len * 4, &xctx->ks2.ks);
1683 xctx->xts.block2 = (block128_f)AES_encrypt;
1684
1685 xctx->xts.key1 = &xctx->ks1;
1686 } while (0);
1687
1688 if (iv)
1689 {
1690 xctx->xts.key2 = &xctx->ks2;
1691 memcpy(ctx->iv, iv, 16);
1692 }
1693
1694 return 1;
1695 }
1696
1697 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1698 const unsigned char *in, size_t len)
1699 {
1700 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1701 if (!xctx->xts.key1 || !xctx->xts.key2)
1702 return 0;
1703 if (!out || !in || len<AES_BLOCK_SIZE)
1704 return 0;
1705 #ifdef OPENSSL_FIPSCANISTER
1706 /* Requirement of SP800-38E */
1707 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1708 (len > (1UL<<20)*16))
1709 {
1710 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1711 return 0;
1712 }
1713 #endif
1714 if (xctx->stream)
1715 (*xctx->stream)(in, out, len,
1716 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1717 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1718 ctx->encrypt))
1719 return 0;
1720 return 1;
1721 }
1722
1723 #define aes_xts_cleanup NULL
1724
1725 #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1726 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1727
1728 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1729 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1730
1731 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1732 {
1733 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1734 switch (type)
1735 {
1736 case EVP_CTRL_INIT:
1737 cctx->key_set = 0;
1738 cctx->iv_set = 0;
1739 cctx->L = 8;
1740 cctx->M = 12;
1741 cctx->tag_set = 0;
1742 cctx->len_set = 0;
1743 return 1;
1744
1745 case EVP_CTRL_CCM_SET_IVLEN:
1746 arg = 15 - arg;
1747 case EVP_CTRL_CCM_SET_L:
1748 if (arg < 2 || arg > 8)
1749 return 0;
1750 cctx->L = arg;
1751 return 1;
1752
1753 case EVP_CTRL_CCM_SET_TAG:
1754 if ((arg & 1) || arg < 4 || arg > 16)
1755 return 0;
1756 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1757 return 0;
1758 if (ptr)
1759 {
1760 cctx->tag_set = 1;
1761 memcpy(c->buf, ptr, arg);
1762 }
1763 cctx->M = arg;
1764 return 1;
1765
1766 case EVP_CTRL_CCM_GET_TAG:
1767 if (!c->encrypt || !cctx->tag_set)
1768 return 0;
1769 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1770 return 0;
1771 cctx->tag_set = 0;
1772 cctx->iv_set = 0;
1773 cctx->len_set = 0;
1774 return 1;
1775
1776 default:
1777 return -1;
1778
1779 }
1780 }
1781
1782 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1783 const unsigned char *iv, int enc)
1784 {
1785 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1786 if (!iv && !key)
1787 return 1;
1788 if (key) do
1789 {
1790 #ifdef VPAES_CAPABLE
1791 if (VPAES_CAPABLE)
1792 {
1793 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks.ks);
1794 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1795 &cctx->ks, (block128_f)vpaes_encrypt);
1796 cctx->str = NULL;
1797 cctx->key_set = 1;
1798 break;
1799 }
1800 #endif
1801 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks.ks);
1802 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1803 &cctx->ks, (block128_f)AES_encrypt);
1804 cctx->str = NULL;
1805 cctx->key_set = 1;
1806 } while (0);
1807 if (iv)
1808 {
1809 memcpy(ctx->iv, iv, 15 - cctx->L);
1810 cctx->iv_set = 1;
1811 }
1812 return 1;
1813 }
1814
1815 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1816 const unsigned char *in, size_t len)
1817 {
1818 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1819 CCM128_CONTEXT *ccm = &cctx->ccm;
1820 /* If not set up, return error */
1821 if (!cctx->iv_set && !cctx->key_set)
1822 return -1;
1823 if (!ctx->encrypt && !cctx->tag_set)
1824 return -1;
1825 if (!out)
1826 {
1827 if (!in)
1828 {
1829 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1830 return -1;
1831 cctx->len_set = 1;
1832 return len;
1833 }
1834 /* If have AAD need message length */
1835 if (!cctx->len_set && len)
1836 return -1;
1837 CRYPTO_ccm128_aad(ccm, in, len);
1838 return len;
1839 }
1840 /* EVP_*Final() doesn't return any data */
1841 if (!in)
1842 return 0;
1843 /* If not set length yet do it */
1844 if (!cctx->len_set)
1845 {
1846 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1847 return -1;
1848 cctx->len_set = 1;
1849 }
1850 if (ctx->encrypt)
1851 {
1852 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1853 cctx->str) :
1854 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1855 return -1;
1856 cctx->tag_set = 1;
1857 return len;
1858 }
1859 else
1860 {
1861 int rv = -1;
1862 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1863 cctx->str) :
1864 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1865 {
1866 unsigned char tag[16];
1867 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1868 {
1869 if (!memcmp(tag, ctx->buf, cctx->M))
1870 rv = len;
1871 }
1872 }
1873 if (rv == -1)
1874 OPENSSL_cleanse(out, len);
1875 cctx->iv_set = 0;
1876 cctx->tag_set = 0;
1877 cctx->len_set = 0;
1878 return rv;
1879 }
1880
1881 }
1882
1883 #define aes_ccm_cleanup NULL
1884
1885 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1886 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1887 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1888
1889 typedef struct
1890 {
1891 union { double align; AES_KEY ks; } ks;
1892 /* Indicates if IV has been set */
1893 unsigned char *iv;
1894 } EVP_AES_WRAP_CTX;
1895
1896 static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1897 const unsigned char *iv, int enc)
1898 {
1899 EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
1900 if (!iv && !key)
1901 return 1;
1902 if (key)
1903 {
1904 if (ctx->encrypt)
1905 AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
1906 else
1907 AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
1908 if (!iv)
1909 wctx->iv = NULL;
1910 }
1911 if (iv)
1912 {
1913 memcpy(ctx->iv, iv, 8);
1914 wctx->iv = ctx->iv;
1915 }
1916 return 1;
1917 }
1918
1919 static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1920 const unsigned char *in, size_t inlen)
1921 {
1922 EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
1923 size_t rv;
1924 if (inlen % 8)
1925 return 0;
1926 if (!out)
1927 {
1928 if (ctx->encrypt)
1929 return inlen + 8;
1930 else
1931 return inlen - 8;
1932 }
1933 if (!in)
1934 return 0;
1935 if (ctx->encrypt)
1936 rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv, out, in, inlen,
1937 (block128_f)AES_encrypt);
1938 else
1939 rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv, out, in, inlen,
1940 (block128_f)AES_decrypt);
1941 return rv ? (int)rv : -1;
1942 }
1943
1944 #define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
1945 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1946 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
1947
1948 static const EVP_CIPHER aes_128_wrap = {
1949 NID_id_aes128_wrap,
1950 8, 16, 8, WRAP_FLAGS,
1951 aes_wrap_init_key, aes_wrap_cipher,
1952 NULL,
1953 sizeof(EVP_AES_WRAP_CTX),
1954 NULL,NULL,NULL,NULL };
1955
1956 const EVP_CIPHER *EVP_aes_128_wrap(void)
1957 {
1958 return &aes_128_wrap;
1959 }
1960
1961 static const EVP_CIPHER aes_192_wrap = {
1962 NID_id_aes192_wrap,
1963 8, 24, 8, WRAP_FLAGS,
1964 aes_wrap_init_key, aes_wrap_cipher,
1965 NULL,
1966 sizeof(EVP_AES_WRAP_CTX),
1967 NULL,NULL,NULL,NULL };
1968
1969 const EVP_CIPHER *EVP_aes_192_wrap(void)
1970 {
1971 return &aes_192_wrap;
1972 }
1973
1974 static const EVP_CIPHER aes_256_wrap = {
1975 NID_id_aes256_wrap,
1976 8, 32, 8, WRAP_FLAGS,
1977 aes_wrap_init_key, aes_wrap_cipher,
1978 NULL,
1979 sizeof(EVP_AES_WRAP_CTX),
1980 NULL,NULL,NULL,NULL };
1981
1982 const EVP_CIPHER *EVP_aes_256_wrap(void)
1983 {
1984 return &aes_256_wrap;
1985 }
1986
1987 #endif
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