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 #define OPENSSL_FIPSAPI
53 #include <openssl/opensslconf.h>
54 #ifndef OPENSSL_NO_AES
55 #include <openssl/evp.h>
56 #include <openssl/err.h>
59 #include <openssl/aes.h>
61 #include "modes_lcl.h"
62 #include <openssl/rand.h>
76 AES_KEY ks; /* AES key schedule to use */
77 int key_set; /* Set if key initialised */
78 int iv_set; /* Set if an iv is set */
80 unsigned char *iv; /* Temporary IV store */
81 int ivlen; /* IV length */
83 int iv_gen; /* It is OK to generate IVs */
84 int tls_aad_len; /* TLS AAD length */
90 AES_KEY ks1, ks2; /* AES key schedules to use */
92 void (*stream)(const unsigned char *in,
93 unsigned char *out, size_t length,
94 const AES_KEY *key1, const AES_KEY *key2,
95 const unsigned char iv[16]);
100 AES_KEY ks; /* AES key schedule to use */
101 int key_set; /* Set if key initialised */
102 int iv_set; /* Set if an iv is set */
103 int tag_set; /* Set if tag is valid */
104 int len_set; /* Set if message length set */
105 int L, M; /* L and M parameters from RFC3610 */
110 #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
113 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
115 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
118 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
120 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
123 void vpaes_cbc_encrypt(const unsigned char *in,
127 unsigned char *ivec, int enc);
130 void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
131 size_t length, const AES_KEY *key,
132 unsigned char ivec[16], int enc);
133 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
134 size_t len, const AES_KEY *key,
135 const unsigned char ivec[16]);
136 void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
137 size_t len, const AES_KEY *key1,
138 const AES_KEY *key2, const unsigned char iv[16]);
139 void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
140 size_t len, const AES_KEY *key1,
141 const AES_KEY *key2, const unsigned char iv[16]);
144 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
145 size_t blocks, const AES_KEY *key,
146 const unsigned char ivec[AES_BLOCK_SIZE]);
149 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
150 ((defined(__i386) || defined(__i386__) || \
151 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
152 defined(__x86_64) || defined(__x86_64__) || \
153 defined(_M_AMD64) || defined(_M_X64) || \
156 extern unsigned int OPENSSL_ia32cap_P[2];
159 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
162 #define BSAES_CAPABLE VPAES_CAPABLE
167 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
169 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
171 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
174 void aesni_encrypt(const unsigned char *in, unsigned char *out,
176 void aesni_decrypt(const unsigned char *in, unsigned char *out,
179 void aesni_ecb_encrypt(const unsigned char *in,
184 void aesni_cbc_encrypt(const unsigned char *in,
188 unsigned char *ivec, int enc);
190 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
194 const unsigned char *ivec);
196 void aesni_xts_encrypt(const unsigned char *in,
199 const AES_KEY *key1, const AES_KEY *key2,
200 const unsigned char iv[16]);
202 void aesni_xts_decrypt(const unsigned char *in,
205 const AES_KEY *key1, const AES_KEY *key2,
206 const unsigned char iv[16]);
208 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
212 const unsigned char ivec[16],
213 unsigned char cmac[16]);
215 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
219 const unsigned char ivec[16],
220 unsigned char cmac[16]);
222 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
223 const unsigned char *iv, int enc)
226 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
228 mode = ctx->cipher->flags & EVP_CIPH_MODE;
229 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
232 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
233 dat->block = (block128_f)aesni_decrypt;
234 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
235 (cbc128_f)aesni_cbc_encrypt :
239 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
240 dat->block = (block128_f)aesni_encrypt;
241 if (mode==EVP_CIPH_CBC_MODE)
242 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
243 else if (mode==EVP_CIPH_CTR_MODE)
244 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
246 dat->stream.cbc = NULL;
251 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
258 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
259 const unsigned char *in, size_t len)
261 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
266 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
267 const unsigned char *in, size_t len)
269 size_t bl = ctx->cipher->block_size;
271 if (len<bl) return 1;
273 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
278 #define aesni_ofb_cipher aes_ofb_cipher
279 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
280 const unsigned char *in,size_t len);
282 #define aesni_cfb_cipher aes_cfb_cipher
283 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
284 const unsigned char *in,size_t len);
286 #define aesni_cfb8_cipher aes_cfb8_cipher
287 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
288 const unsigned char *in,size_t len);
290 #define aesni_cfb1_cipher aes_cfb1_cipher
291 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
292 const unsigned char *in,size_t len);
294 #define aesni_ctr_cipher aes_ctr_cipher
295 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
296 const unsigned char *in, size_t len);
298 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
299 const unsigned char *iv, int enc)
301 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
306 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
307 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
308 (block128_f)aesni_encrypt);
309 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
310 /* If we have an iv can set it directly, otherwise use
313 if (iv == NULL && gctx->iv_set)
317 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
324 /* If key set use IV, otherwise copy */
326 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
328 memcpy(gctx->iv, iv, gctx->ivlen);
335 #define aesni_gcm_cipher aes_gcm_cipher
336 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
337 const unsigned char *in, size_t len);
339 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
340 const unsigned char *iv, int enc)
342 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
348 /* key_len is two AES keys */
351 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
352 xctx->xts.block1 = (block128_f)aesni_encrypt;
353 xctx->stream = aesni_xts_encrypt;
357 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
358 xctx->xts.block1 = (block128_f)aesni_decrypt;
359 xctx->stream = aesni_xts_decrypt;
362 aesni_set_encrypt_key(key + ctx->key_len/2,
363 ctx->key_len * 4, &xctx->ks2);
364 xctx->xts.block2 = (block128_f)aesni_encrypt;
366 xctx->xts.key1 = &xctx->ks1;
371 xctx->xts.key2 = &xctx->ks2;
372 memcpy(ctx->iv, iv, 16);
378 #define aesni_xts_cipher aes_xts_cipher
379 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
380 const unsigned char *in, size_t len);
382 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
383 const unsigned char *iv, int enc)
385 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
390 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
391 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
392 &cctx->ks, (block128_f)aesni_encrypt);
393 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
394 (ccm128_f)aesni_ccm64_decrypt_blocks;
399 memcpy(ctx->iv, iv, 15 - cctx->L);
405 #define aesni_ccm_cipher aes_ccm_cipher
406 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
407 const unsigned char *in, size_t len);
409 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
410 static const EVP_CIPHER aesni_##keylen##_##mode = { \
411 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
412 flags|EVP_CIPH_##MODE##_MODE, \
414 aesni_##mode##_cipher, \
416 sizeof(EVP_AES_KEY), \
417 NULL,NULL,NULL,NULL }; \
418 static const EVP_CIPHER aes_##keylen##_##mode = { \
419 nid##_##keylen##_##nmode,blocksize, \
421 flags|EVP_CIPH_##MODE##_MODE, \
423 aes_##mode##_cipher, \
425 sizeof(EVP_AES_KEY), \
426 NULL,NULL,NULL,NULL }; \
427 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
428 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
430 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
431 static const EVP_CIPHER aesni_##keylen##_##mode = { \
432 nid##_##keylen##_##mode,blocksize, \
433 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
434 flags|EVP_CIPH_##MODE##_MODE, \
435 aesni_##mode##_init_key, \
436 aesni_##mode##_cipher, \
437 aes_##mode##_cleanup, \
438 sizeof(EVP_AES_##MODE##_CTX), \
439 NULL,NULL,aes_##mode##_ctrl,NULL }; \
440 static const EVP_CIPHER aes_##keylen##_##mode = { \
441 nid##_##keylen##_##mode,blocksize, \
442 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
443 flags|EVP_CIPH_##MODE##_MODE, \
444 aes_##mode##_init_key, \
445 aes_##mode##_cipher, \
446 aes_##mode##_cleanup, \
447 sizeof(EVP_AES_##MODE##_CTX), \
448 NULL,NULL,aes_##mode##_ctrl,NULL }; \
449 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
450 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
454 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
455 static const EVP_CIPHER aes_##keylen##_##mode = { \
456 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
457 flags|EVP_CIPH_##MODE##_MODE, \
459 aes_##mode##_cipher, \
461 sizeof(EVP_AES_KEY), \
462 NULL,NULL,NULL,NULL }; \
463 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
464 { return &aes_##keylen##_##mode; }
466 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
467 static const EVP_CIPHER aes_##keylen##_##mode = { \
468 nid##_##keylen##_##mode,blocksize, \
469 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
470 flags|EVP_CIPH_##MODE##_MODE, \
471 aes_##mode##_init_key, \
472 aes_##mode##_cipher, \
473 aes_##mode##_cleanup, \
474 sizeof(EVP_AES_##MODE##_CTX), \
475 NULL,NULL,aes_##mode##_ctrl,NULL }; \
476 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
477 { return &aes_##keylen##_##mode; }
480 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
481 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
482 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
483 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
484 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
485 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
486 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
487 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
489 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
490 const unsigned char *iv, int enc)
493 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
495 mode = ctx->cipher->flags & EVP_CIPH_MODE;
496 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
499 if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
501 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
502 dat->block = (block128_f)AES_decrypt;
503 dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
510 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
511 dat->block = (block128_f)vpaes_decrypt;
512 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
513 (cbc128_f)vpaes_cbc_encrypt :
519 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
520 dat->block = (block128_f)AES_decrypt;
521 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
522 (cbc128_f)AES_cbc_encrypt :
527 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
529 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
530 dat->block = (block128_f)AES_encrypt;
531 dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
538 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
539 dat->block = (block128_f)vpaes_encrypt;
540 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
541 (cbc128_f)vpaes_cbc_encrypt :
547 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
548 dat->block = (block128_f)AES_encrypt;
549 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
550 (cbc128_f)AES_cbc_encrypt :
553 if (mode==EVP_CIPH_CTR_MODE)
554 dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
560 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
567 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
568 const unsigned char *in, size_t len)
570 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
573 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
574 else if (ctx->encrypt)
575 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
577 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
582 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
583 const unsigned char *in, size_t len)
585 size_t bl = ctx->cipher->block_size;
587 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
589 if (len<bl) return 1;
591 for (i=0,len-=bl;i<=len;i+=bl)
592 (*dat->block)(in+i,out+i,&dat->ks);
597 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
598 const unsigned char *in,size_t len)
600 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
602 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
603 ctx->iv,&ctx->num,dat->block);
607 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
608 const unsigned char *in,size_t len)
610 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
612 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
613 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
617 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
618 const unsigned char *in,size_t len)
620 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
622 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
623 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
627 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
628 const unsigned char *in,size_t len)
630 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
632 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
633 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
634 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
638 while (len>=MAXBITCHUNK) {
639 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
640 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
644 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
645 ctx->iv,&ctx->num,ctx->encrypt,dat->block);
650 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
651 const unsigned char *in, size_t len)
653 unsigned int num = ctx->num;
654 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
657 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
658 ctx->iv,ctx->buf,&num,dat->stream.ctr);
660 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
661 ctx->iv,ctx->buf,&num,dat->block);
662 ctx->num = (size_t)num;
666 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
667 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
668 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
670 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
672 EVP_AES_GCM_CTX *gctx = c->cipher_data;
673 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
674 if (gctx->iv != c->iv)
675 OPENSSL_free(gctx->iv);
679 /* increment counter (64-bit int) by 1 */
680 static void ctr64_inc(unsigned char *counter) {
693 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
695 EVP_AES_GCM_CTX *gctx = c->cipher_data;
701 gctx->ivlen = c->cipher->iv_len;
705 gctx->tls_aad_len = -1;
708 case EVP_CTRL_GCM_SET_IVLEN:
712 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
716 /* Allocate memory for IV if needed */
717 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
719 if (gctx->iv != c->iv)
720 OPENSSL_free(gctx->iv);
721 gctx->iv = OPENSSL_malloc(arg);
728 case EVP_CTRL_GCM_SET_TAG:
729 if (arg <= 0 || arg > 16 || c->encrypt)
731 memcpy(c->buf, ptr, arg);
735 case EVP_CTRL_GCM_GET_TAG:
736 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
738 memcpy(ptr, c->buf, arg);
741 case EVP_CTRL_GCM_SET_IV_FIXED:
742 /* Special case: -1 length restores whole IV */
745 memcpy(gctx->iv, ptr, gctx->ivlen);
749 /* Fixed field must be at least 4 bytes and invocation field
752 if ((arg < 4) || (gctx->ivlen - arg) < 8)
755 memcpy(gctx->iv, ptr, arg);
757 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
762 case EVP_CTRL_GCM_IV_GEN:
763 if (gctx->iv_gen == 0 || gctx->key_set == 0)
765 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
766 if (arg <= 0 || arg > gctx->ivlen)
768 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
769 /* Invocation field will be at least 8 bytes in size and
770 * so no need to check wrap around or increment more than
773 ctr64_inc(gctx->iv + gctx->ivlen - 8);
777 case EVP_CTRL_GCM_SET_IV_INV:
778 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
780 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
781 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
785 case EVP_CTRL_AEAD_TLS1_AAD:
786 /* Save the AAD for later use */
789 memcpy(c->buf, ptr, arg);
790 gctx->tls_aad_len = arg;
792 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
793 /* Correct length for explicit IV */
794 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
795 /* If decrypting correct for tag too */
797 len -= EVP_GCM_TLS_TAG_LEN;
798 c->buf[arg-2] = len>>8;
799 c->buf[arg-1] = len & 0xff;
801 /* Extra padding: tag appended to record */
802 return EVP_GCM_TLS_TAG_LEN;
810 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
811 const unsigned char *iv, int enc)
813 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
821 AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
822 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
823 (block128_f)AES_encrypt);
824 gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
832 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
833 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
834 (block128_f)vpaes_encrypt);
839 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
840 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
842 gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
848 /* If we have an iv can set it directly, otherwise use
851 if (iv == NULL && gctx->iv_set)
855 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
862 /* If key set use IV, otherwise copy */
864 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
866 memcpy(gctx->iv, iv, gctx->ivlen);
873 /* Handle TLS GCM packet format. This consists of the last portion of the IV
874 * followed by the payload and finally the tag. On encrypt generate IV,
875 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
879 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
880 const unsigned char *in, size_t len)
882 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
884 /* Encrypt/decrypt must be performed in place */
885 if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
887 /* Set IV from start of buffer or generate IV and write to start
890 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
891 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
892 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
895 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
897 /* Fix buffer and length to point to payload */
898 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
899 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
900 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
903 /* Encrypt payload */
906 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
912 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
916 /* Finally write tag */
917 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
918 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
925 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
931 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
935 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
936 EVP_GCM_TLS_TAG_LEN);
937 /* If tag mismatch wipe buffer */
938 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
940 OPENSSL_cleanse(out, len);
948 gctx->tls_aad_len = -1;
952 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
953 const unsigned char *in, size_t len)
955 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
956 /* If not set up, return error */
960 if (gctx->tls_aad_len >= 0)
961 return aes_gcm_tls_cipher(ctx, out, in, len);
965 if (!ctx->encrypt && gctx->taglen < 0)
971 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
974 else if (ctx->encrypt)
978 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
984 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
992 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
998 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1008 if (CRYPTO_gcm128_finish(&gctx->gcm,
1009 ctx->buf, gctx->taglen) != 0)
1014 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1016 /* Don't reuse the IV */
1023 #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1024 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1025 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1027 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1028 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1029 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1030 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1031 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1032 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1034 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1036 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1037 if (type != EVP_CTRL_INIT)
1039 /* key1 and key2 are used as an indicator both key and IV are set */
1040 xctx->xts.key1 = NULL;
1041 xctx->xts.key2 = NULL;
1045 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1046 const unsigned char *iv, int enc)
1048 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1054 xctx->stream = NULL;
1055 /* key_len is two AES keys */
1056 #ifdef BSAES_CAPABLE
1058 xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
1061 #ifdef VPAES_CAPABLE
1066 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1067 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1071 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1072 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1075 vpaes_set_encrypt_key(key + ctx->key_len/2,
1076 ctx->key_len * 4, &xctx->ks2);
1077 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1079 xctx->xts.key1 = &xctx->ks1;
1085 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1086 xctx->xts.block1 = (block128_f)AES_encrypt;
1090 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1091 xctx->xts.block1 = (block128_f)AES_decrypt;
1094 AES_set_encrypt_key(key + ctx->key_len/2,
1095 ctx->key_len * 4, &xctx->ks2);
1096 xctx->xts.block2 = (block128_f)AES_encrypt;
1098 xctx->xts.key1 = &xctx->ks1;
1103 xctx->xts.key2 = &xctx->ks2;
1104 memcpy(ctx->iv, iv, 16);
1110 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1111 const unsigned char *in, size_t len)
1113 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1114 if (!xctx->xts.key1 || !xctx->xts.key2)
1116 if (!out || !in || len<AES_BLOCK_SIZE)
1119 /* Requirement of SP800-38E */
1120 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1121 (len > (1UL<<20)*16))
1123 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1128 (*xctx->stream)(in, out, len,
1129 xctx->xts.key1, xctx->xts.key2, ctx->iv);
1130 else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1136 #define aes_xts_cleanup NULL
1138 #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1139 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1141 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1142 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1144 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1146 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1158 case EVP_CTRL_CCM_SET_IVLEN:
1160 case EVP_CTRL_CCM_SET_L:
1161 if (arg < 2 || arg > 8)
1166 case EVP_CTRL_CCM_SET_TAG:
1167 if ((arg & 1) || arg < 4 || arg > 16)
1169 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1174 memcpy(c->buf, ptr, arg);
1179 case EVP_CTRL_CCM_GET_TAG:
1180 if (!c->encrypt || !cctx->tag_set)
1182 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1195 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1196 const unsigned char *iv, int enc)
1198 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1203 #ifdef VPAES_CAPABLE
1206 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1207 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1208 &cctx->ks, (block128_f)vpaes_encrypt);
1213 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1214 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1215 &cctx->ks, (block128_f)AES_encrypt);
1221 memcpy(ctx->iv, iv, 15 - cctx->L);
1227 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1228 const unsigned char *in, size_t len)
1230 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1231 CCM128_CONTEXT *ccm = &cctx->ccm;
1232 /* If not set up, return error */
1233 if (!cctx->iv_set && !cctx->key_set)
1235 if (!ctx->encrypt && !cctx->tag_set)
1241 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1246 /* If have AAD need message length */
1247 if (!cctx->len_set && len)
1249 CRYPTO_ccm128_aad(ccm, in, len);
1252 /* EVP_*Final() doesn't return any data */
1255 /* If not set length yet do it */
1258 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1264 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1266 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1274 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1276 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1278 unsigned char tag[16];
1279 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1281 if (!memcmp(tag, ctx->buf, cctx->M))
1286 OPENSSL_cleanse(out, len);
1295 #define aes_ccm_cleanup NULL
1297 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1298 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1299 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)