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 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
149 ((defined(__i386) || defined(__i386__) || \
150 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
151 defined(__x86_64) || defined(__x86_64__) || \
152 defined(_M_AMD64) || defined(_M_X64) || \
155 extern unsigned int OPENSSL_ia32cap_P[2];
158 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
161 #define BSAES_CAPABLE VPAES_CAPABLE
166 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
168 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
170 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
173 void aesni_encrypt(const unsigned char *in, unsigned char *out,
175 void aesni_decrypt(const unsigned char *in, unsigned char *out,
178 void aesni_ecb_encrypt(const unsigned char *in,
183 void aesni_cbc_encrypt(const unsigned char *in,
187 unsigned char *ivec, int enc);
189 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
193 const unsigned char *ivec);
195 void aesni_xts_encrypt(const unsigned char *in,
198 const AES_KEY *key1, const AES_KEY *key2,
199 const unsigned char iv[16]);
201 void aesni_xts_decrypt(const unsigned char *in,
204 const AES_KEY *key1, const AES_KEY *key2,
205 const unsigned char iv[16]);
207 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
211 const unsigned char ivec[16],
212 unsigned char cmac[16]);
214 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
218 const unsigned char ivec[16],
219 unsigned char cmac[16]);
221 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
222 const unsigned char *iv, int enc)
225 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
227 mode = ctx->cipher->flags & EVP_CIPH_MODE;
228 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
231 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
232 dat->block = (block128_f)aesni_decrypt;
233 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
234 (cbc128_f)aesni_cbc_encrypt :
238 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
239 dat->block = (block128_f)aesni_encrypt;
240 if (mode==EVP_CIPH_CBC_MODE)
241 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
242 else if (mode==EVP_CIPH_CTR_MODE)
243 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
245 dat->stream.cbc = NULL;
250 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
257 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
258 const unsigned char *in, size_t len)
260 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
265 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
266 const unsigned char *in, size_t len)
268 size_t bl = ctx->cipher->block_size;
270 if (len<bl) return 1;
272 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
277 #define aesni_ofb_cipher aes_ofb_cipher
278 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
279 const unsigned char *in,size_t len);
281 #define aesni_cfb_cipher aes_cfb_cipher
282 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
283 const unsigned char *in,size_t len);
285 #define aesni_cfb8_cipher aes_cfb8_cipher
286 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
287 const unsigned char *in,size_t len);
289 #define aesni_cfb1_cipher aes_cfb1_cipher
290 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
291 const unsigned char *in,size_t len);
293 #define aesni_ctr_cipher aes_ctr_cipher
294 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
295 const unsigned char *in, size_t len);
297 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
298 const unsigned char *iv, int enc)
300 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
305 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
306 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
307 (block128_f)aesni_encrypt);
308 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
309 /* If we have an iv can set it directly, otherwise use
312 if (iv == NULL && gctx->iv_set)
316 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
323 /* If key set use IV, otherwise copy */
325 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
327 memcpy(gctx->iv, iv, gctx->ivlen);
334 #define aesni_gcm_cipher aes_gcm_cipher
335 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
336 const unsigned char *in, size_t len);
338 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
339 const unsigned char *iv, int enc)
341 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
347 /* key_len is two AES keys */
350 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
351 xctx->xts.block1 = (block128_f)aesni_encrypt;
352 xctx->stream = aesni_xts_encrypt;
356 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
357 xctx->xts.block1 = (block128_f)aesni_decrypt;
358 xctx->stream = aesni_xts_decrypt;
361 aesni_set_encrypt_key(key + ctx->key_len/2,
362 ctx->key_len * 4, &xctx->ks2);
363 xctx->xts.block2 = (block128_f)aesni_encrypt;
365 xctx->xts.key1 = &xctx->ks1;
370 xctx->xts.key2 = &xctx->ks2;
371 memcpy(ctx->iv, iv, 16);
377 #define aesni_xts_cipher aes_xts_cipher
378 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
379 const unsigned char *in, size_t len);
381 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
382 const unsigned char *iv, int enc)
384 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
389 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
390 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
391 &cctx->ks, (block128_f)aesni_encrypt);
392 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
393 (ccm128_f)aesni_ccm64_decrypt_blocks;
398 memcpy(ctx->iv, iv, 15 - cctx->L);
404 #define aesni_ccm_cipher aes_ccm_cipher
405 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
406 const unsigned char *in, size_t len);
408 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
409 static const EVP_CIPHER aesni_##keylen##_##mode = { \
410 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
411 flags|EVP_CIPH_##MODE##_MODE, \
413 aesni_##mode##_cipher, \
415 sizeof(EVP_AES_KEY), \
416 NULL,NULL,NULL,NULL }; \
417 static const EVP_CIPHER aes_##keylen##_##mode = { \
418 nid##_##keylen##_##nmode,blocksize, \
420 flags|EVP_CIPH_##MODE##_MODE, \
422 aes_##mode##_cipher, \
424 sizeof(EVP_AES_KEY), \
425 NULL,NULL,NULL,NULL }; \
426 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
427 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
429 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
430 static const EVP_CIPHER aesni_##keylen##_##mode = { \
431 nid##_##keylen##_##mode,blocksize, \
432 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
433 flags|EVP_CIPH_##MODE##_MODE, \
434 aesni_##mode##_init_key, \
435 aesni_##mode##_cipher, \
436 aes_##mode##_cleanup, \
437 sizeof(EVP_AES_##MODE##_CTX), \
438 NULL,NULL,aes_##mode##_ctrl,NULL }; \
439 static const EVP_CIPHER aes_##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 aes_##mode##_init_key, \
444 aes_##mode##_cipher, \
445 aes_##mode##_cleanup, \
446 sizeof(EVP_AES_##MODE##_CTX), \
447 NULL,NULL,aes_##mode##_ctrl,NULL }; \
448 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
449 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
453 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
454 static const EVP_CIPHER aes_##keylen##_##mode = { \
455 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
456 flags|EVP_CIPH_##MODE##_MODE, \
458 aes_##mode##_cipher, \
460 sizeof(EVP_AES_KEY), \
461 NULL,NULL,NULL,NULL }; \
462 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
463 { return &aes_##keylen##_##mode; }
465 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
466 static const EVP_CIPHER aes_##keylen##_##mode = { \
467 nid##_##keylen##_##mode,blocksize, \
468 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
469 flags|EVP_CIPH_##MODE##_MODE, \
470 aes_##mode##_init_key, \
471 aes_##mode##_cipher, \
472 aes_##mode##_cleanup, \
473 sizeof(EVP_AES_##MODE##_CTX), \
474 NULL,NULL,aes_##mode##_ctrl,NULL }; \
475 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
476 { return &aes_##keylen##_##mode; }
479 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
480 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
481 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
482 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
483 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
484 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
485 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
486 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
488 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
489 const unsigned char *iv, int enc)
492 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
494 mode = ctx->cipher->flags & EVP_CIPH_MODE;
495 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
498 if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
500 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
501 dat->block = (block128_f)AES_decrypt;
502 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
509 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
510 dat->block = (block128_f)vpaes_decrypt;
511 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
512 (cbc128_f)vpaes_cbc_encrypt :
518 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
519 dat->block = (block128_f)AES_decrypt;
520 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
521 (cbc128_f)AES_cbc_encrypt :
526 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
528 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
529 dat->block = (block128_f)AES_encrypt;
530 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
537 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
538 dat->block = (block128_f)vpaes_encrypt;
539 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
540 (cbc128_f)vpaes_cbc_encrypt :
546 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
547 dat->block = (block128_f)AES_encrypt;
548 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
549 (cbc128_f)AES_cbc_encrypt :
552 if (mode==EVP_CIPH_CTR_MODE)
553 dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
559 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
566 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
567 const unsigned char *in, size_t len)
569 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
572 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
573 else if (ctx->encrypt)
574 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
576 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
581 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
582 const unsigned char *in, size_t len)
584 size_t bl = ctx->cipher->block_size;
586 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
588 if (len<bl) return 1;
590 for (i=0,len-=bl;i<=len;i+=bl)
591 (*dat->block)(in+i,out+i,&dat->ks);
596 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
597 const unsigned char *in,size_t len)
599 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
601 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
602 ctx->iv,&ctx->num,dat->block);
606 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
607 const unsigned char *in,size_t len)
609 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
611 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
612 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
616 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
617 const unsigned char *in,size_t len)
619 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
621 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
622 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
626 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
627 const unsigned char *in,size_t len)
629 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
631 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
632 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
633 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
637 while (len>=MAXBITCHUNK) {
638 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
639 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
643 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
644 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
649 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
650 const unsigned char *in, size_t len)
652 unsigned int num = ctx->num;
653 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
656 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
657 ctx->iv,ctx->buf,&num,dat->stream.ctr);
659 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
660 ctx->iv,ctx->buf,&num,dat->block);
661 ctx->num = (size_t)num;
665 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
666 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
667 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
669 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
671 EVP_AES_GCM_CTX *gctx = c->cipher_data;
672 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
673 if (gctx->iv != c->iv)
674 OPENSSL_free(gctx->iv);
678 /* increment counter (64-bit int) by 1 */
679 static void ctr64_inc(unsigned char *counter) {
692 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
694 EVP_AES_GCM_CTX *gctx = c->cipher_data;
700 gctx->ivlen = c->cipher->iv_len;
704 gctx->tls_aad_len = -1;
707 case EVP_CTRL_GCM_SET_IVLEN:
711 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
715 /* Allocate memory for IV if needed */
716 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
718 if (gctx->iv != c->iv)
719 OPENSSL_free(gctx->iv);
720 gctx->iv = OPENSSL_malloc(arg);
727 case EVP_CTRL_GCM_SET_TAG:
728 if (arg <= 0 || arg > 16 || c->encrypt)
730 memcpy(c->buf, ptr, arg);
734 case EVP_CTRL_GCM_GET_TAG:
735 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
737 memcpy(ptr, c->buf, arg);
740 case EVP_CTRL_GCM_SET_IV_FIXED:
741 /* Special case: -1 length restores whole IV */
744 memcpy(gctx->iv, ptr, gctx->ivlen);
748 /* Fixed field must be at least 4 bytes and invocation field
751 if ((arg < 4) || (gctx->ivlen - arg) < 8)
754 memcpy(gctx->iv, ptr, arg);
756 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
761 case EVP_CTRL_GCM_IV_GEN:
762 if (gctx->iv_gen == 0 || gctx->key_set == 0)
764 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
765 if (arg <= 0 || arg > gctx->ivlen)
767 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
768 /* Invocation field will be at least 8 bytes in size and
769 * so no need to check wrap around or increment more than
772 ctr64_inc(gctx->iv + gctx->ivlen - 8);
776 case EVP_CTRL_GCM_SET_IV_INV:
777 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
779 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
780 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
784 case EVP_CTRL_AEAD_TLS1_AAD:
785 /* Save the AAD for later use */
788 memcpy(c->buf, ptr, arg);
789 gctx->tls_aad_len = arg;
791 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
792 /* Correct length for explicit IV */
793 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
794 /* If decrypting correct for tag too */
796 len -= EVP_GCM_TLS_TAG_LEN;
797 c->buf[arg-2] = len>>8;
798 c->buf[arg-1] = len & 0xff;
800 /* Extra padding: tag appended to record */
801 return EVP_GCM_TLS_TAG_LEN;
809 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
810 const unsigned char *iv, int enc)
812 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
820 AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
821 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
822 (block128_f)AES_encrypt);
823 gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
831 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
832 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
833 (block128_f)vpaes_encrypt);
838 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
839 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
841 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
847 /* If we have an iv can set it directly, otherwise use
850 if (iv == NULL && gctx->iv_set)
854 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
861 /* If key set use IV, otherwise copy */
863 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
865 memcpy(gctx->iv, iv, gctx->ivlen);
872 /* Handle TLS GCM packet format. This consists of the last portion of the IV
873 * followed by the payload and finally the tag. On encrypt generate IV,
874 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
878 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
879 const unsigned char *in, size_t len)
881 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
883 /* Encrypt/decrypt must be performed in place */
884 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
886 /* Set IV from start of buffer or generate IV and write to start
889 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
890 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
891 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
894 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
896 /* Fix buffer and length to point to payload */
897 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
898 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
899 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
902 /* Encrypt payload */
905 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
911 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
915 /* Finally write tag */
916 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
917 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
924 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
930 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
934 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
935 EVP_GCM_TLS_TAG_LEN);
936 /* If tag mismatch wipe buffer */
937 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
939 OPENSSL_cleanse(out, len);
947 gctx->tls_aad_len = -1;
951 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
952 const unsigned char *in, size_t len)
954 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
955 /* If not set up, return error */
959 if (gctx->tls_aad_len >= 0)
960 return aes_gcm_tls_cipher(ctx, out, in, len);
964 if (!ctx->encrypt && gctx->taglen < 0)
970 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
973 else if (ctx->encrypt)
977 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
983 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
991 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
997 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1007 if (CRYPTO_gcm128_finish(&gctx->gcm,
1008 ctx->buf, gctx->taglen) != 0)
1013 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1015 /* Don't reuse the IV */
1022 #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1023 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1024 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1026 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1027 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1028 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1029 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1030 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1031 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1033 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1035 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1036 if (type != EVP_CTRL_INIT)
1038 /* key1 and key2 are used as an indicator both key and IV are set */
1039 xctx->xts.key1 = NULL;
1040 xctx->xts.key2 = NULL;
1044 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1045 const unsigned char *iv, int enc)
1047 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1053 xctx->stream = NULL;
1054 /* key_len is two AES keys */
1055 #ifdef BSAES_CAPABLE
1057 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1060 #ifdef VPAES_CAPABLE
1065 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1066 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1070 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1071 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1074 vpaes_set_encrypt_key(key + ctx->key_len/2,
1075 ctx->key_len * 4, &xctx->ks2);
1076 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1078 xctx->xts.key1 = &xctx->ks1;
1084 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1085 xctx->xts.block1 = (block128_f)AES_encrypt;
1089 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1090 xctx->xts.block1 = (block128_f)AES_decrypt;
1093 AES_set_encrypt_key(key + ctx->key_len/2,
1094 ctx->key_len * 4, &xctx->ks2);
1095 xctx->xts.block2 = (block128_f)AES_encrypt;
1097 xctx->xts.key1 = &xctx->ks1;
1102 xctx->xts.key2 = &xctx->ks2;
1103 memcpy(ctx->iv, iv, 16);
1109 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1110 const unsigned char *in, size_t len)
1112 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1113 if (!xctx->xts.key1 || !xctx->xts.key2)
1115 if (!out || !in || len<AES_BLOCK_SIZE)
1118 /* Requirement of SP800-38E */
1119 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1120 (len > (1UL<<20)*16))
1122 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1127 (*xctx->stream)(in, out, len,
1128 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1129 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1135 #define aes_xts_cleanup NULL
1137 #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1138 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1140 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1141 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1143 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1145 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1157 case EVP_CTRL_CCM_SET_IVLEN:
1159 case EVP_CTRL_CCM_SET_L:
1160 if (arg < 2 || arg > 8)
1165 case EVP_CTRL_CCM_SET_TAG:
1166 if ((arg & 1) || arg < 4 || arg > 16)
1168 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1173 memcpy(c->buf, ptr, arg);
1178 case EVP_CTRL_CCM_GET_TAG:
1179 if (!c->encrypt || !cctx->tag_set)
1181 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1194 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1195 const unsigned char *iv, int enc)
1197 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1202 #ifdef VPAES_CAPABLE
1205 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1206 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1207 &cctx->ks, (block128_f)vpaes_encrypt);
1212 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1213 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1214 &cctx->ks, (block128_f)AES_encrypt);
1220 memcpy(ctx->iv, iv, 15 - cctx->L);
1226 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1227 const unsigned char *in, size_t len)
1229 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1230 CCM128_CONTEXT *ccm = &cctx->ccm;
1231 /* If not set up, return error */
1232 if (!cctx->iv_set && !cctx->key_set)
1234 if (!ctx->encrypt && !cctx->tag_set)
1240 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1245 /* If have AAD need message length */
1246 if (!cctx->len_set && len)
1248 CRYPTO_ccm128_aad(ccm, in, len);
1251 /* EVP_*Final() doesn't return any data */
1254 /* If not set length yet do it */
1257 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1263 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1265 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1273 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1275 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1277 unsigned char tag[16];
1278 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1280 if (!memcmp(tag, ctx->buf, cctx->M))
1285 OPENSSL_cleanse(out, len);
1294 #define aes_ccm_cleanup NULL
1296 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1297 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1298 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)