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 */
96 AES_KEY ks; /* AES key schedule to use */
97 int key_set; /* Set if key initialised */
98 int iv_set; /* Set if an iv is set */
99 int tag_set; /* Set if tag is valid */
100 int len_set; /* Set if message length set */
101 int L, M; /* L and M parameters from RFC3610 */
106 #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
109 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
111 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
114 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
116 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
119 void vpaes_cbc_encrypt(const unsigned char *in,
123 unsigned char *ivec, int enc);
126 void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
127 size_t len, const AES_KEY *key,
128 const unsigned char ivec[16]);
131 void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
132 size_t blocks, const AES_KEY *key,
133 const unsigned char ivec[AES_BLOCK_SIZE]);
136 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
137 ((defined(__i386) || defined(__i386__) || \
138 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
139 defined(__x86_64) || defined(__x86_64__) || \
140 defined(_M_AMD64) || defined(_M_X64) || \
143 extern unsigned int OPENSSL_ia32cap_P[2];
146 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
149 #define BSAES_CAPABLE VPAES_CAPABLE
154 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
156 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
158 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
161 void aesni_encrypt(const unsigned char *in, unsigned char *out,
163 void aesni_decrypt(const unsigned char *in, unsigned char *out,
166 void aesni_ecb_encrypt(const unsigned char *in,
171 void aesni_cbc_encrypt(const unsigned char *in,
175 unsigned char *ivec, int enc);
177 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
181 const unsigned char *ivec);
183 void aesni_xts_encrypt(const unsigned char *in,
186 const AES_KEY *key1, const AES_KEY *key2,
187 const unsigned char iv[16]);
189 void aesni_xts_decrypt(const unsigned char *in,
192 const AES_KEY *key1, const AES_KEY *key2,
193 const unsigned char iv[16]);
195 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
199 const unsigned char ivec[16],
200 unsigned char cmac[16]);
202 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
206 const unsigned char ivec[16],
207 unsigned char cmac[16]);
209 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
210 const unsigned char *iv, int enc)
213 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
215 mode = ctx->cipher->flags & EVP_CIPH_MODE;
216 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
219 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
220 dat->block = (block128_f)aesni_decrypt;
221 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
222 (cbc128_f)aesni_cbc_encrypt :
226 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
227 dat->block = (block128_f)aesni_encrypt;
228 if (mode==EVP_CIPH_CBC_MODE)
229 dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
230 else if (mode==EVP_CIPH_CTR_MODE)
231 dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
233 dat->stream.cbc = NULL;
238 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
245 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
246 const unsigned char *in, size_t len)
248 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
253 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
254 const unsigned char *in, size_t len)
256 size_t bl = ctx->cipher->block_size;
258 if (len<bl) return 1;
260 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
265 #define aesni_ofb_cipher aes_ofb_cipher
266 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
267 const unsigned char *in,size_t len);
269 #define aesni_cfb_cipher aes_cfb_cipher
270 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
271 const unsigned char *in,size_t len);
273 #define aesni_cfb8_cipher aes_cfb8_cipher
274 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
275 const unsigned char *in,size_t len);
277 #define aesni_cfb1_cipher aes_cfb1_cipher
278 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
279 const unsigned char *in,size_t len);
281 #define aesni_ctr_cipher aes_ctr_cipher
282 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
283 const unsigned char *in, size_t len);
285 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
286 const unsigned char *iv, int enc)
288 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
293 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
294 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
295 (block128_f)aesni_encrypt);
296 gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
297 /* If we have an iv can set it directly, otherwise use
300 if (iv == NULL && gctx->iv_set)
304 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
311 /* If key set use IV, otherwise copy */
313 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
315 memcpy(gctx->iv, iv, gctx->ivlen);
322 #define aesni_gcm_cipher aes_gcm_cipher
323 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
324 const unsigned char *in, size_t len);
326 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
327 const unsigned char *iv, int enc)
329 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
335 /* key_len is two AES keys */
338 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
339 xctx->xts.block1 = (block128_f)aesni_encrypt;
343 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
344 xctx->xts.block1 = (block128_f)aesni_decrypt;
347 aesni_set_encrypt_key(key + ctx->key_len/2,
348 ctx->key_len * 4, &xctx->ks2);
349 xctx->xts.block2 = (block128_f)aesni_encrypt;
351 xctx->xts.key1 = &xctx->ks1;
356 xctx->xts.key2 = &xctx->ks2;
357 memcpy(ctx->iv, iv, 16);
363 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
364 const unsigned char *in, size_t len)
366 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
367 if (!xctx->xts.key1 || !xctx->xts.key2)
372 /* Requirement of SP800-38E */
373 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
376 EVPerr(EVP_F_AESNI_XTS_CIPHER, EVP_R_TOO_LARGE);
381 aesni_xts_encrypt(in, out, len,
382 xctx->xts.key1, xctx->xts.key2, ctx->iv);
384 aesni_xts_decrypt(in, out, len,
385 xctx->xts.key1, xctx->xts.key2, ctx->iv);
390 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
391 const unsigned char *iv, int enc)
393 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
398 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
399 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
400 &cctx->ks, (block128_f)aesni_encrypt);
401 cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
402 (ccm128_f)aesni_ccm64_decrypt_blocks;
407 memcpy(ctx->iv, iv, 15 - cctx->L);
413 #define aesni_ccm_cipher aes_ccm_cipher
414 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
415 const unsigned char *in, size_t len);
417 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
418 static const EVP_CIPHER aesni_##keylen##_##mode = { \
419 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
420 flags|EVP_CIPH_##MODE##_MODE, \
422 aesni_##mode##_cipher, \
424 sizeof(EVP_AES_KEY), \
425 NULL,NULL,NULL,NULL }; \
426 static const EVP_CIPHER aes_##keylen##_##mode = { \
427 nid##_##keylen##_##nmode,blocksize, \
429 flags|EVP_CIPH_##MODE##_MODE, \
431 aes_##mode##_cipher, \
433 sizeof(EVP_AES_KEY), \
434 NULL,NULL,NULL,NULL }; \
435 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
436 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
438 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
439 static const EVP_CIPHER aesni_##keylen##_##mode = { \
440 nid##_##keylen##_##mode,blocksize, \
441 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
442 flags|EVP_CIPH_##MODE##_MODE, \
443 aesni_##mode##_init_key, \
444 aesni_##mode##_cipher, \
445 aes_##mode##_cleanup, \
446 sizeof(EVP_AES_##MODE##_CTX), \
447 NULL,NULL,aes_##mode##_ctrl,NULL }; \
448 static const EVP_CIPHER aes_##keylen##_##mode = { \
449 nid##_##keylen##_##mode,blocksize, \
450 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
451 flags|EVP_CIPH_##MODE##_MODE, \
452 aes_##mode##_init_key, \
453 aes_##mode##_cipher, \
454 aes_##mode##_cleanup, \
455 sizeof(EVP_AES_##MODE##_CTX), \
456 NULL,NULL,aes_##mode##_ctrl,NULL }; \
457 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
458 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
462 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
463 static const EVP_CIPHER aes_##keylen##_##mode = { \
464 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
465 flags|EVP_CIPH_##MODE##_MODE, \
467 aes_##mode##_cipher, \
469 sizeof(EVP_AES_KEY), \
470 NULL,NULL,NULL,NULL }; \
471 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
472 { return &aes_##keylen##_##mode; }
474 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
475 static const EVP_CIPHER aes_##keylen##_##mode = { \
476 nid##_##keylen##_##mode,blocksize, \
477 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
478 flags|EVP_CIPH_##MODE##_MODE, \
479 aes_##mode##_init_key, \
480 aes_##mode##_cipher, \
481 aes_##mode##_cleanup, \
482 sizeof(EVP_AES_##MODE##_CTX), \
483 NULL,NULL,aes_##mode##_ctrl,NULL }; \
484 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
485 { return &aes_##keylen##_##mode; }
488 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
489 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
490 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
491 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
492 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
493 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
494 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
495 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
497 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
498 const unsigned char *iv, int enc)
501 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
503 mode = ctx->cipher->flags & EVP_CIPH_MODE;
504 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
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 /* key_len is two AES keys */
1054 #ifdef VPAES_CAPABLE
1059 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1060 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1064 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1065 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1068 vpaes_set_encrypt_key(key + ctx->key_len/2,
1069 ctx->key_len * 4, &xctx->ks2);
1070 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1072 xctx->xts.key1 = &xctx->ks1;
1078 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1079 xctx->xts.block1 = (block128_f)AES_encrypt;
1083 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1084 xctx->xts.block1 = (block128_f)AES_decrypt;
1087 AES_set_encrypt_key(key + ctx->key_len/2,
1088 ctx->key_len * 4, &xctx->ks2);
1089 xctx->xts.block2 = (block128_f)AES_encrypt;
1091 xctx->xts.key1 = &xctx->ks1;
1096 xctx->xts.key2 = &xctx->ks2;
1097 memcpy(ctx->iv, iv, 16);
1103 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1104 const unsigned char *in, size_t len)
1106 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1107 if (!xctx->xts.key1 || !xctx->xts.key2)
1112 /* Requirement of SP800-38E */
1113 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1114 (len > (1L<<20)*16))
1116 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1120 if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1126 #define aes_xts_cleanup NULL
1128 #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
1129 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1131 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1132 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
1134 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1136 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1148 case EVP_CTRL_CCM_SET_IVLEN:
1150 case EVP_CTRL_CCM_SET_L:
1151 if (arg < 2 || arg > 8)
1156 case EVP_CTRL_CCM_SET_TAG:
1157 if ((arg & 1) || arg < 4 || arg > 16)
1159 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1164 memcpy(c->buf, ptr, arg);
1169 case EVP_CTRL_CCM_GET_TAG:
1170 if (!c->encrypt || !cctx->tag_set)
1172 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1185 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1186 const unsigned char *iv, int enc)
1188 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1193 #ifdef VPAES_CAPABLE
1196 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1197 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1198 &cctx->ks, (block128_f)vpaes_encrypt);
1203 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1204 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1205 &cctx->ks, (block128_f)AES_encrypt);
1211 memcpy(ctx->iv, iv, 15 - cctx->L);
1217 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1218 const unsigned char *in, size_t len)
1220 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1221 CCM128_CONTEXT *ccm = &cctx->ccm;
1222 /* If not set up, return error */
1223 if (!cctx->iv_set && !cctx->key_set)
1225 if (!ctx->encrypt && !cctx->tag_set)
1231 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1236 /* If have AAD need message length */
1237 if (!cctx->len_set && len)
1239 CRYPTO_ccm128_aad(ccm, in, len);
1242 /* EVP_*Final() doesn't return any data */
1245 /* If not set length yet do it */
1248 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1254 if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
1256 CRYPTO_ccm128_encrypt(ccm, in, out, len))
1264 if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
1266 !CRYPTO_ccm128_decrypt(ccm, in, out, len))
1268 unsigned char tag[16];
1269 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1271 if (!memcmp(tag, ctx->buf, cctx->M))
1276 OPENSSL_cleanse(out, len);
1285 #define aes_ccm_cleanup NULL
1287 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1288 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1289 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)