1 /* ====================================================================
2 * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
51 #include <openssl/opensslconf.h>
52 #ifndef OPENSSL_NO_AES
53 #include <openssl/evp.h>
54 #include <openssl/err.h>
57 #include <openssl/aes.h>
60 #include "modes_lcl.h"
61 #include <openssl/rand.h>
75 AES_KEY ks; /* AES key schedule to use */
76 int key_set; /* Set if key initialised */
77 int iv_set; /* Set if an iv is set */
79 unsigned char *iv; /* Temporary IV store */
80 int ivlen; /* IV length */
82 int iv_gen; /* It is OK to generate IVs */
83 int tls_aad_len; /* TLS AAD length */
89 AES_KEY ks1, ks2; /* AES key schedules to use */
91 void (*stream)(const unsigned char *in,
92 unsigned char *out, size_t length,
93 const AES_KEY *key1, const AES_KEY *key2,
94 const unsigned char iv[16]);
99 AES_KEY ks; /* AES key schedule to use */
100 int key_set; /* Set if key initialised */
101 int iv_set; /* Set if an iv is set */
102 int tag_set; /* Set if tag is valid */
103 int len_set; /* Set if message length set */
104 int L, M; /* L and M parameters from RFC3610 */
109 #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
112 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
114 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
117 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
119 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
122 void vpaes_cbc_encrypt(const unsigned char *in,
126 unsigned char *ivec, int enc);
129 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
130 size_t length, const AES_KEY *key,
131 unsigned char ivec[16], int enc);
132 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
133 size_t len, const AES_KEY *key,
134 const unsigned char ivec[16]);
135 void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
136 size_t len, const AES_KEY *key1,
137 const AES_KEY *key2, const unsigned char iv[16]);
138 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
139 size_t len, const AES_KEY *key1,
140 const AES_KEY *key2, const unsigned char iv[16]);
143 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
144 size_t blocks, const AES_KEY *key,
145 const unsigned char ivec[AES_BLOCK_SIZE]);
148 void AES_xts_encrypt(const char *inp,char *out,size_t len,
149 const AES_KEY *key1, const AES_KEY *key2,
150 const unsigned char iv[16]);
151 void AES_xts_decrypt(const char *inp,char *out,size_t len,
152 const AES_KEY *key1, const AES_KEY *key2,
153 const unsigned char iv[16]);
156 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
157 ((defined(__i386) || defined(__i386__) || \
158 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
159 defined(__x86_64) || defined(__x86_64__) || \
160 defined(_M_AMD64) || defined(_M_X64) || \
163 extern unsigned int OPENSSL_ia32cap_P[2];
166 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
169 #define BSAES_CAPABLE VPAES_CAPABLE
174 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
176 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
178 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
181 void aesni_encrypt(const unsigned char *in, unsigned char *out,
183 void aesni_decrypt(const unsigned char *in, unsigned char *out,
186 void aesni_ecb_encrypt(const unsigned char *in,
191 void aesni_cbc_encrypt(const unsigned char *in,
195 unsigned char *ivec, int enc);
197 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
201 const unsigned char *ivec);
203 void aesni_xts_encrypt(const unsigned char *in,
206 const AES_KEY *key1, const AES_KEY *key2,
207 const unsigned char iv[16]);
209 void aesni_xts_decrypt(const unsigned char *in,
212 const AES_KEY *key1, const AES_KEY *key2,
213 const unsigned char iv[16]);
215 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
219 const unsigned char ivec[16],
220 unsigned char cmac[16]);
222 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
226 const unsigned char ivec[16],
227 unsigned char cmac[16]);
229 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
230 const unsigned char *iv, int enc)
233 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
235 mode = ctx->cipher->flags & EVP_CIPH_MODE;
236 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
239 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
240 dat->block = (block128_f)aesni_decrypt;
241 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
242 (cbc128_f)aesni_cbc_encrypt :
246 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
247 dat->block = (block128_f)aesni_encrypt;
248 if (mode==EVP_CIPH_CBC_MODE)
249 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
250 else if (mode==EVP_CIPH_CTR_MODE)
251 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
253 dat->stream.cbc = NULL;
258 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
265 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
266 const unsigned char *in, size_t len)
268 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
273 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
274 const unsigned char *in, size_t len)
276 size_t bl = ctx->cipher->block_size;
278 if (len<bl) return 1;
280 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
285 #define aesni_ofb_cipher aes_ofb_cipher
286 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
287 const unsigned char *in,size_t len);
289 #define aesni_cfb_cipher aes_cfb_cipher
290 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
291 const unsigned char *in,size_t len);
293 #define aesni_cfb8_cipher aes_cfb8_cipher
294 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
295 const unsigned char *in,size_t len);
297 #define aesni_cfb1_cipher aes_cfb1_cipher
298 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
299 const unsigned char *in,size_t len);
301 #define aesni_ctr_cipher aes_ctr_cipher
302 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
303 const unsigned char *in, size_t len);
305 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
306 const unsigned char *iv, int enc)
308 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
313 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
314 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
315 (block128_f)aesni_encrypt);
316 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
317 /* If we have an iv can set it directly, otherwise use
320 if (iv == NULL && gctx->iv_set)
324 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
331 /* If key set use IV, otherwise copy */
333 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
335 memcpy(gctx->iv, iv, gctx->ivlen);
342 #define aesni_gcm_cipher aes_gcm_cipher
343 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
344 const unsigned char *in, size_t len);
346 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
347 const unsigned char *iv, int enc)
349 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
355 /* key_len is two AES keys */
358 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
359 xctx->xts.block1 = (block128_f)aesni_encrypt;
360 xctx->stream = aesni_xts_encrypt;
364 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
365 xctx->xts.block1 = (block128_f)aesni_decrypt;
366 xctx->stream = aesni_xts_decrypt;
369 aesni_set_encrypt_key(key + ctx->key_len/2,
370 ctx->key_len * 4, &xctx->ks2);
371 xctx->xts.block2 = (block128_f)aesni_encrypt;
373 xctx->xts.key1 = &xctx->ks1;
378 xctx->xts.key2 = &xctx->ks2;
379 memcpy(ctx->iv, iv, 16);
385 #define aesni_xts_cipher aes_xts_cipher
386 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
387 const unsigned char *in, size_t len);
389 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
390 const unsigned char *iv, int enc)
392 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
397 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
398 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
399 &cctx->ks, (block128_f)aesni_encrypt);
400 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
401 (ccm128_f)aesni_ccm64_decrypt_blocks;
406 memcpy(ctx->iv, iv, 15 - cctx->L);
412 #define aesni_ccm_cipher aes_ccm_cipher
413 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
414 const unsigned char *in, size_t len);
416 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
417 static const EVP_CIPHER aesni_##keylen##_##mode = { \
418 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
419 flags|EVP_CIPH_##MODE##_MODE, \
421 aesni_##mode##_cipher, \
423 sizeof(EVP_AES_KEY), \
424 NULL,NULL,NULL,NULL }; \
425 static const EVP_CIPHER aes_##keylen##_##mode = { \
426 nid##_##keylen##_##nmode,blocksize, \
428 flags|EVP_CIPH_##MODE##_MODE, \
430 aes_##mode##_cipher, \
432 sizeof(EVP_AES_KEY), \
433 NULL,NULL,NULL,NULL }; \
434 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
435 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
437 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
438 static const EVP_CIPHER aesni_##keylen##_##mode = { \
439 nid##_##keylen##_##mode,blocksize, \
440 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
441 flags|EVP_CIPH_##MODE##_MODE, \
442 aesni_##mode##_init_key, \
443 aesni_##mode##_cipher, \
444 aes_##mode##_cleanup, \
445 sizeof(EVP_AES_##MODE##_CTX), \
446 NULL,NULL,aes_##mode##_ctrl,NULL }; \
447 static const EVP_CIPHER aes_##keylen##_##mode = { \
448 nid##_##keylen##_##mode,blocksize, \
449 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
450 flags|EVP_CIPH_##MODE##_MODE, \
451 aes_##mode##_init_key, \
452 aes_##mode##_cipher, \
453 aes_##mode##_cleanup, \
454 sizeof(EVP_AES_##MODE##_CTX), \
455 NULL,NULL,aes_##mode##_ctrl,NULL }; \
456 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
457 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
461 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
462 static const EVP_CIPHER aes_##keylen##_##mode = { \
463 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
464 flags|EVP_CIPH_##MODE##_MODE, \
466 aes_##mode##_cipher, \
468 sizeof(EVP_AES_KEY), \
469 NULL,NULL,NULL,NULL }; \
470 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
471 { return &aes_##keylen##_##mode; }
473 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
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 &aes_##keylen##_##mode; }
487 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
488 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
489 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
490 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
491 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
492 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
493 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
494 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
496 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
497 const unsigned char *iv, int enc)
500 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
502 mode = ctx->cipher->flags & EVP_CIPH_MODE;
503 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
506 if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
508 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
509 dat->block = (block128_f)AES_decrypt;
510 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
517 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
518 dat->block = (block128_f)vpaes_decrypt;
519 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
520 (cbc128_f)vpaes_cbc_encrypt :
526 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
527 dat->block = (block128_f)AES_decrypt;
528 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
529 (cbc128_f)AES_cbc_encrypt :
534 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
536 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
537 dat->block = (block128_f)AES_encrypt;
538 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
545 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
546 dat->block = (block128_f)vpaes_encrypt;
547 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
548 (cbc128_f)vpaes_cbc_encrypt :
554 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
555 dat->block = (block128_f)AES_encrypt;
556 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
557 (cbc128_f)AES_cbc_encrypt :
560 if (mode==EVP_CIPH_CTR_MODE)
561 dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
567 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
574 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
575 const unsigned char *in, size_t len)
577 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
580 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
581 else if (ctx->encrypt)
582 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
584 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
589 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
590 const unsigned char *in, size_t len)
592 size_t bl = ctx->cipher->block_size;
594 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
596 if (len<bl) return 1;
598 for (i=0,len-=bl;i<=len;i+=bl)
599 (*dat->block)(in+i,out+i,&dat->ks);
604 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
605 const unsigned char *in,size_t len)
607 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
609 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
610 ctx->iv,&ctx->num,dat->block);
614 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
615 const unsigned char *in,size_t len)
617 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
619 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
620 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
624 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
625 const unsigned char *in,size_t len)
627 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
629 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
630 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
634 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
635 const unsigned char *in,size_t len)
637 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
639 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
640 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
641 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
645 while (len>=MAXBITCHUNK) {
646 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
647 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
651 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
652 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
657 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
658 const unsigned char *in, size_t len)
660 unsigned int num = ctx->num;
661 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
664 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
665 ctx->iv,ctx->buf,&num,dat->stream.ctr);
667 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
668 ctx->iv,ctx->buf,&num,dat->block);
669 ctx->num = (size_t)num;
673 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
674 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
675 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
677 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
679 EVP_AES_GCM_CTX *gctx = c->cipher_data;
680 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
681 if (gctx->iv != c->iv)
682 OPENSSL_free(gctx->iv);
686 /* increment counter (64-bit int) by 1 */
687 static void ctr64_inc(unsigned char *counter) {
700 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
702 EVP_AES_GCM_CTX *gctx = c->cipher_data;
708 gctx->ivlen = c->cipher->iv_len;
712 gctx->tls_aad_len = -1;
715 case EVP_CTRL_GCM_SET_IVLEN:
719 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
723 /* Allocate memory for IV if needed */
724 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
726 if (gctx->iv != c->iv)
727 OPENSSL_free(gctx->iv);
728 gctx->iv = OPENSSL_malloc(arg);
735 case EVP_CTRL_GCM_SET_TAG:
736 if (arg <= 0 || arg > 16 || c->encrypt)
738 memcpy(c->buf, ptr, arg);
742 case EVP_CTRL_GCM_GET_TAG:
743 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
745 memcpy(ptr, c->buf, arg);
748 case EVP_CTRL_GCM_SET_IV_FIXED:
749 /* Special case: -1 length restores whole IV */
752 memcpy(gctx->iv, ptr, gctx->ivlen);
756 /* Fixed field must be at least 4 bytes and invocation field
759 if ((arg < 4) || (gctx->ivlen - arg) < 8)
762 memcpy(gctx->iv, ptr, arg);
764 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
769 case EVP_CTRL_GCM_IV_GEN:
770 if (gctx->iv_gen == 0 || gctx->key_set == 0)
772 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
773 if (arg <= 0 || arg > gctx->ivlen)
775 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
776 /* Invocation field will be at least 8 bytes in size and
777 * so no need to check wrap around or increment more than
780 ctr64_inc(gctx->iv + gctx->ivlen - 8);
784 case EVP_CTRL_GCM_SET_IV_INV:
785 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
787 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
788 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
792 case EVP_CTRL_AEAD_TLS1_AAD:
793 /* Save the AAD for later use */
796 memcpy(c->buf, ptr, arg);
797 gctx->tls_aad_len = arg;
799 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
800 /* Correct length for explicit IV */
801 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
802 /* If decrypting correct for tag too */
804 len -= EVP_GCM_TLS_TAG_LEN;
805 c->buf[arg-2] = len>>8;
806 c->buf[arg-1] = len & 0xff;
808 /* Extra padding: tag appended to record */
809 return EVP_GCM_TLS_TAG_LEN;
817 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
818 const unsigned char *iv, int enc)
820 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
828 AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
829 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
830 (block128_f)AES_encrypt);
831 gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
839 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
840 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
841 (block128_f)vpaes_encrypt);
846 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
847 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
849 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
855 /* If we have an iv can set it directly, otherwise use
858 if (iv == NULL && gctx->iv_set)
862 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
869 /* If key set use IV, otherwise copy */
871 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
873 memcpy(gctx->iv, iv, gctx->ivlen);
880 /* Handle TLS GCM packet format. This consists of the last portion of the IV
881 * followed by the payload and finally the tag. On encrypt generate IV,
882 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
886 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
887 const unsigned char *in, size_t len)
889 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
891 /* Encrypt/decrypt must be performed in place */
892 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
894 /* Set IV from start of buffer or generate IV and write to start
897 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
898 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
899 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
902 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
904 /* Fix buffer and length to point to payload */
905 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
906 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
907 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
910 /* Encrypt payload */
913 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
919 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
923 /* Finally write tag */
924 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
925 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
932 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
938 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
942 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
943 EVP_GCM_TLS_TAG_LEN);
944 /* If tag mismatch wipe buffer */
945 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
947 OPENSSL_cleanse(out, len);
955 gctx->tls_aad_len = -1;
959 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
960 const unsigned char *in, size_t len)
962 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
963 /* If not set up, return error */
967 if (gctx->tls_aad_len >= 0)
968 return aes_gcm_tls_cipher(ctx, out, in, len);
972 if (!ctx->encrypt && gctx->taglen < 0)
978 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
981 else if (ctx->encrypt)
985 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
991 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
999 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
1005 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1015 if (CRYPTO_gcm128_finish(&gctx->gcm,
1016 ctx->buf, gctx->taglen) != 0)
1021 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1023 /* Don't reuse the IV */
1030 #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1031 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1032 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1034 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1035 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1036 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1037 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1038 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1039 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1041 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1043 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1044 if (type != EVP_CTRL_INIT)
1046 /* key1 and key2 are used as an indicator both key and IV are set */
1047 xctx->xts.key1 = NULL;
1048 xctx->xts.key2 = NULL;
1052 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1053 const unsigned char *iv, int enc)
1055 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1062 xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
1064 xctx->stream = NULL;
1066 /* key_len is two AES keys */
1067 #ifdef BSAES_CAPABLE
1069 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1072 #ifdef VPAES_CAPABLE
1077 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1078 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1082 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1083 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1086 vpaes_set_encrypt_key(key + ctx->key_len/2,
1087 ctx->key_len * 4, &xctx->ks2);
1088 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1090 xctx->xts.key1 = &xctx->ks1;
1096 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1097 xctx->xts.block1 = (block128_f)AES_encrypt;
1101 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1102 xctx->xts.block1 = (block128_f)AES_decrypt;
1105 AES_set_encrypt_key(key + ctx->key_len/2,
1106 ctx->key_len * 4, &xctx->ks2);
1107 xctx->xts.block2 = (block128_f)AES_encrypt;
1109 xctx->xts.key1 = &xctx->ks1;
1114 xctx->xts.key2 = &xctx->ks2;
1115 memcpy(ctx->iv, iv, 16);
1121 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1122 const unsigned char *in, size_t len)
1124 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1125 if (!xctx->xts.key1 || !xctx->xts.key2)
1127 if (!out || !in || len<AES_BLOCK_SIZE)
1130 /* Requirement of SP800-38E */
1131 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1132 (len > (1UL<<20)*16))
1134 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1139 (*xctx->stream)(in, out, len,
1140 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1141 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1147 #define aes_xts_cleanup NULL
1149 #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1150 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1152 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1153 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1155 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1157 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1169 case EVP_CTRL_CCM_SET_IVLEN:
1171 case EVP_CTRL_CCM_SET_L:
1172 if (arg < 2 || arg > 8)
1177 case EVP_CTRL_CCM_SET_TAG:
1178 if ((arg & 1) || arg < 4 || arg > 16)
1180 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1185 memcpy(c->buf, ptr, arg);
1190 case EVP_CTRL_CCM_GET_TAG:
1191 if (!c->encrypt || !cctx->tag_set)
1193 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1206 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1207 const unsigned char *iv, int enc)
1209 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1214 #ifdef VPAES_CAPABLE
1217 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1218 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1219 &cctx->ks, (block128_f)vpaes_encrypt);
1224 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1225 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1226 &cctx->ks, (block128_f)AES_encrypt);
1232 memcpy(ctx->iv, iv, 15 - cctx->L);
1238 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1239 const unsigned char *in, size_t len)
1241 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1242 CCM128_CONTEXT *ccm = &cctx->ccm;
1243 /* If not set up, return error */
1244 if (!cctx->iv_set && !cctx->key_set)
1246 if (!ctx->encrypt && !cctx->tag_set)
1252 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1257 /* If have AAD need message length */
1258 if (!cctx->len_set && len)
1260 CRYPTO_ccm128_aad(ccm, in, len);
1263 /* EVP_*Final() doesn't return any data */
1266 /* If not set length yet do it */
1269 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1275 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1277 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1285 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1287 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1289 unsigned char tag[16];
1290 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1292 if (!memcmp(tag, ctx->buf, cctx->M))
1297 OPENSSL_cleanse(out, len);
1306 #define aes_ccm_cleanup NULL
1308 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1309 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1310 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)