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>
67 void (*block)(const unsigned char *in, unsigned char *out,
70 void (*cbc)(const unsigned char *in,
74 unsigned char *ivec, int enc);
75 void (*ctr)(const unsigned char *in,
77 size_t blocks, const AES_KEY *key,
78 const unsigned char ivec[16]);
85 AES_KEY ks; /* AES key schedule to use */
86 int key_set; /* Set if key initialised */
87 int iv_set; /* Set if an iv is set */
89 unsigned char *iv; /* Temporary IV store */
90 int ivlen; /* IV length */
92 int iv_gen; /* It is OK to generate IVs */
93 int tls_aad_len; /* TLS AAD length */
98 AES_KEY ks1, ks2; /* AES key schedules to use */
104 AES_KEY ks; /* AES key schedule to use */
105 int key_set; /* Set if key initialised */
106 int iv_set; /* Set if an iv is set */
107 int tag_set; /* Set if tag is valid */
108 int len_set; /* Set if message length set */
109 int L, M; /* L and M parameters from RFC3610 */
113 #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
116 int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
118 int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
121 void vpaes_encrypt(const unsigned char *in, unsigned char *out,
123 void vpaes_decrypt(const unsigned char *in, unsigned char *out,
126 void vpaes_cbc_encrypt(const unsigned char *in,
130 unsigned char *ivec, 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]);
138 #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
139 ((defined(__i386) || defined(__i386__) || \
140 defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
141 defined(__x86_64) || defined(__x86_64__) || \
142 defined(_M_AMD64) || defined(_M_X64) || \
145 extern unsigned int OPENSSL_ia32cap_P[2];
148 #define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
151 #define BSAES_CAPABLE VPAES_CAPABLE
156 #define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
158 int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
160 int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
163 void aesni_encrypt(const unsigned char *in, unsigned char *out,
165 void aesni_decrypt(const unsigned char *in, unsigned char *out,
168 void aesni_ecb_encrypt(const unsigned char *in,
173 void aesni_cbc_encrypt(const unsigned char *in,
177 unsigned char *ivec, int enc);
179 void aesni_ctr32_encrypt_blocks(const unsigned char *in,
183 const unsigned char *ivec);
185 void aesni_xts_encrypt(const unsigned char *in,
188 const AES_KEY *key1, const AES_KEY *key2,
189 const unsigned char iv[16]);
191 void aesni_xts_decrypt(const unsigned char *in,
194 const AES_KEY *key1, const AES_KEY *key2,
195 const unsigned char iv[16]);
197 void aesni_ccm64_encrypt_blocks (const unsigned char *in,
201 const unsigned char ivec[16],
202 unsigned char cmac[16]);
204 void aesni_ccm64_decrypt_blocks (const unsigned char *in,
208 const unsigned char ivec[16],
209 unsigned char cmac[16]);
211 static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
212 const unsigned char *iv, int enc)
216 if (((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_ECB_MODE
217 || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CBC_MODE)
219 ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
221 ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
225 EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
232 static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
233 const unsigned char *in, size_t len)
235 aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
240 static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
241 const unsigned char *in, size_t len)
243 size_t bl = ctx->cipher->block_size;
245 if (len<bl) return 1;
247 aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
252 static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
253 const unsigned char *in,size_t len)
255 CRYPTO_ofb128_encrypt(in,out,len,ctx->cipher_data,
257 (block128_f)aesni_encrypt);
261 static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
262 const unsigned char *in,size_t len)
264 CRYPTO_cfb128_encrypt(in,out,len,ctx->cipher_data,
265 ctx->iv,&ctx->num,ctx->encrypt,
266 (block128_f)aesni_encrypt);
270 static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
271 const unsigned char *in,size_t len)
273 CRYPTO_cfb128_8_encrypt(in,out,len,ctx->cipher_data,
274 ctx->iv,&ctx->num,ctx->encrypt,
275 (block128_f)aesni_encrypt);
279 static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
280 const unsigned char *in,size_t len)
282 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
283 CRYPTO_cfb128_1_encrypt(in,out,len,ctx->cipher_data,
284 ctx->iv,&ctx->num,ctx->encrypt,
285 (block128_f)aesni_encrypt);
289 while (len>=MAXBITCHUNK) {
290 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,ctx->cipher_data,
291 ctx->iv,&ctx->num,ctx->encrypt,
292 (block128_f)aesni_encrypt);
296 CRYPTO_cfb128_1_encrypt(in,out,len*8,ctx->cipher_data,
297 ctx->iv,&ctx->num,ctx->encrypt,
298 (block128_f)aesni_encrypt);
303 static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
304 const unsigned char *in, size_t len)
309 CRYPTO_ctr128_encrypt_ctr32(in,out,len,
310 ctx->cipher_data,ctx->iv,ctx->buf,&num,
311 (ctr128_f)aesni_ctr32_encrypt_blocks);
313 ctx->num = (size_t)num;
317 static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
318 const unsigned char *iv, int enc)
320 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
325 aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
326 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
327 (block128_f)aesni_encrypt);
328 /* If we have an iv can set it directly, otherwise use
331 if (iv == NULL && gctx->iv_set)
335 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
342 /* If key set use IV, otherwise copy */
344 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
346 memcpy(gctx->iv, iv, gctx->ivlen);
353 /* Handle TLS GCM packet format. This consists of the last portion of the IV
354 * followed by the payload and finally the tag. On encrypt generate IV,
355 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
359 static int aesni_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
360 const unsigned char *in, size_t len)
362 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
364 /* Encrypt/decrypt must be performed in place */
367 /* Set IV from start of buffer or generate IV and write to start
370 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
371 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
372 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
375 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
377 /* Fix buffer and length to point to payload */
378 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
379 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
380 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
383 /* Encrypt payload */
384 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, in, out, len,
385 aesni_ctr32_encrypt_blocks))
388 /* Finally write tag */
389 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
390 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
395 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, in, out, len,
396 aesni_ctr32_encrypt_blocks))
399 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
400 EVP_GCM_TLS_TAG_LEN);
401 /* If tag mismatch wipe buffer */
402 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
404 OPENSSL_cleanse(out, len);
412 gctx->tls_aad_len = -1;
416 static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
417 const unsigned char *in, size_t len)
419 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
420 /* If not set up, return error */
424 if (gctx->tls_aad_len >= 0)
425 return aesni_gcm_tls_cipher(ctx, out, in, len);
429 if (!ctx->encrypt && gctx->taglen < 0)
435 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
438 else if (ctx->encrypt)
440 if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
442 aesni_ctr32_encrypt_blocks))
447 if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
449 aesni_ctr32_encrypt_blocks))
458 if (CRYPTO_gcm128_finish(&gctx->gcm,
459 ctx->buf, gctx->taglen) != 0)
464 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
466 /* Don't reuse the IV */
473 static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
474 const unsigned char *iv, int enc)
476 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
482 /* key_len is two AES keys */
485 aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
486 xctx->xts.block1 = (block128_f)aesni_encrypt;
490 aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
491 xctx->xts.block1 = (block128_f)aesni_decrypt;
494 aesni_set_encrypt_key(key + ctx->key_len/2,
495 ctx->key_len * 4, &xctx->ks2);
496 xctx->xts.block2 = (block128_f)aesni_encrypt;
498 xctx->xts.key1 = &xctx->ks1;
503 xctx->xts.key2 = &xctx->ks2;
504 memcpy(ctx->iv, iv, 16);
510 static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
511 const unsigned char *in, size_t len)
513 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
514 if (!xctx->xts.key1 || !xctx->xts.key2)
519 /* Requirement of SP800-38E */
520 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
523 EVPerr(EVP_F_AESNI_XTS_CIPHER, EVP_R_TOO_LARGE);
528 aesni_xts_encrypt(in, out, len,
529 xctx->xts.key1, xctx->xts.key2, ctx->iv);
531 aesni_xts_decrypt(in, out, len,
532 xctx->xts.key1, xctx->xts.key2, ctx->iv);
537 static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
538 const unsigned char *iv, int enc)
540 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
545 aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
546 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
547 &cctx->ks, (block128_f)aesni_encrypt);
552 memcpy(ctx->iv, iv, 15 - cctx->L);
558 static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
559 const unsigned char *in, size_t len)
561 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
562 CCM128_CONTEXT *ccm = &cctx->ccm;
563 /* If not set up, return error */
564 if (!cctx->iv_set && !cctx->key_set)
566 if (!ctx->encrypt && !cctx->tag_set)
572 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
577 /* If have AAD need message length */
578 if (!cctx->len_set && len)
580 CRYPTO_ccm128_aad(ccm, in, len);
583 /* EVP_*Final() doesn't return any data */
586 /* If not set length yet do it */
589 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
595 if (CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
596 aesni_ccm64_encrypt_blocks))
604 if (!CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
605 aesni_ccm64_decrypt_blocks))
607 unsigned char tag[16];
608 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
610 if (!memcmp(tag, ctx->buf, cctx->M))
615 OPENSSL_cleanse(out, len);
624 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
625 static const EVP_CIPHER aesni_##keylen##_##mode = { \
626 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
627 flags|EVP_CIPH_##MODE##_MODE, \
629 aesni_##mode##_cipher, \
631 sizeof(EVP_AES_KEY), \
632 NULL,NULL,NULL,NULL }; \
633 static const EVP_CIPHER aes_##keylen##_##mode = { \
634 nid##_##keylen##_##nmode,blocksize, \
636 flags|EVP_CIPH_##MODE##_MODE, \
638 aes_##mode##_cipher, \
640 sizeof(EVP_AES_KEY), \
641 NULL,NULL,NULL,NULL }; \
642 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
643 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
645 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
646 static const EVP_CIPHER aesni_##keylen##_##mode = { \
647 nid##_##keylen##_##mode,blocksize, \
648 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
649 flags|EVP_CIPH_##MODE##_MODE, \
650 aesni_##mode##_init_key, \
651 aesni_##mode##_cipher, \
652 aes_##mode##_cleanup, \
653 sizeof(EVP_AES_##MODE##_CTX), \
654 NULL,NULL,aes_##mode##_ctrl,NULL }; \
655 static const EVP_CIPHER aes_##keylen##_##mode = { \
656 nid##_##keylen##_##mode,blocksize, \
657 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
658 flags|EVP_CIPH_##MODE##_MODE, \
659 aes_##mode##_init_key, \
660 aes_##mode##_cipher, \
661 aes_##mode##_cleanup, \
662 sizeof(EVP_AES_##MODE##_CTX), \
663 NULL,NULL,aes_##mode##_ctrl,NULL }; \
664 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
665 { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
669 #define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
670 static const EVP_CIPHER aes_##keylen##_##mode = { \
671 nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
672 flags|EVP_CIPH_##MODE##_MODE, \
674 aes_##mode##_cipher, \
676 sizeof(EVP_AES_KEY), \
677 NULL,NULL,NULL,NULL }; \
678 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
679 { return &aes_##keylen##_##mode; }
681 #define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
682 static const EVP_CIPHER aes_##keylen##_##mode = { \
683 nid##_##keylen##_##mode,blocksize, \
684 (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
685 flags|EVP_CIPH_##MODE##_MODE, \
686 aes_##mode##_init_key, \
687 aes_##mode##_cipher, \
688 aes_##mode##_cleanup, \
689 sizeof(EVP_AES_##MODE##_CTX), \
690 NULL,NULL,aes_##mode##_ctrl,NULL }; \
691 const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
692 { return &aes_##keylen##_##mode; }
695 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
696 BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
697 BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
698 BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
699 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
700 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
701 BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
702 BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
704 static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
705 const unsigned char *iv, int enc)
708 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
710 mode = ctx->cipher->flags & EVP_CIPH_MODE;
711 if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
716 ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
717 dat->block = vpaes_decrypt;
718 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
719 vpaes_cbc_encrypt:NULL;
724 ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
725 dat->block = AES_decrypt;
726 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
727 AES_cbc_encrypt:NULL;
731 if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
733 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
734 dat->block = AES_encrypt;
735 dat->stream.ctr = bsaes_ctr32_encrypt_blocks;
742 ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
743 dat->block = vpaes_encrypt;
744 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
745 vpaes_cbc_encrypt:NULL;
750 ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
751 dat->block = AES_encrypt;
752 dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
753 AES_cbc_encrypt:NULL;
755 if (mode==EVP_CIPH_CTR_MODE)
757 void AES_ctr32_encrypt(const unsigned char *in,
759 size_t blocks, const AES_KEY *key,
760 const unsigned char ivec[AES_BLOCK_SIZE]);
761 dat->stream.ctr = AES_ctr32_encrypt;
768 EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
775 static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
776 const unsigned char *in, size_t len)
778 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
781 (*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
782 else if (ctx->encrypt)
783 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,
784 (block128_f)dat->block);
786 CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,
787 (block128_f)dat->block);
792 static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
793 const unsigned char *in, size_t len)
795 size_t bl = ctx->cipher->block_size;
797 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
799 if (len<bl) return 1;
801 for (i=0,len-=bl;i<=len;i+=bl)
802 (*dat->block)(in+i,out+i,&dat->ks);
807 static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
808 const unsigned char *in,size_t len)
810 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
812 CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
814 (block128_f)dat->block);
818 static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
819 const unsigned char *in,size_t len)
821 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
823 CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
824 ctx->iv,&ctx->num,ctx->encrypt,
825 (block128_f)dat->block);
829 static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
830 const unsigned char *in,size_t len)
832 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
834 CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
835 ctx->iv,&ctx->num,ctx->encrypt,
836 (block128_f)dat->block);
840 static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
841 const unsigned char *in,size_t len)
843 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
845 if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
846 CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
847 ctx->iv,&ctx->num,ctx->encrypt,
848 (block128_f)dat->block);
852 while (len>=MAXBITCHUNK) {
853 CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
854 ctx->iv,&ctx->num,ctx->encrypt,
855 (block128_f)dat->block);
859 CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
860 ctx->iv,&ctx->num,ctx->encrypt,
861 (block128_f)dat->block);
866 static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
867 const unsigned char *in, size_t len)
869 unsigned int num = ctx->num;
870 EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
873 CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
874 ctx->iv,ctx->buf,&num,(ctr128_f)dat->stream.ctr);
876 CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
877 ctx->iv,ctx->buf,&num,(block128_f)dat->block);
878 ctx->num = (size_t)num;
882 BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
883 BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
884 BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
886 static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
888 EVP_AES_GCM_CTX *gctx = c->cipher_data;
889 OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
890 if (gctx->iv != c->iv)
891 OPENSSL_free(gctx->iv);
895 /* increment counter (64-bit int) by 1 */
896 static void ctr64_inc(unsigned char *counter) {
909 static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
911 EVP_AES_GCM_CTX *gctx = c->cipher_data;
917 gctx->ivlen = c->cipher->iv_len;
921 gctx->tls_aad_len = -1;
924 case EVP_CTRL_GCM_SET_IVLEN:
928 if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
932 /* Allocate memory for IV if needed */
933 if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
935 if (gctx->iv != c->iv)
936 OPENSSL_free(gctx->iv);
937 gctx->iv = OPENSSL_malloc(arg);
944 case EVP_CTRL_GCM_SET_TAG:
945 if (arg <= 0 || arg > 16 || c->encrypt)
947 memcpy(c->buf, ptr, arg);
951 case EVP_CTRL_GCM_GET_TAG:
952 if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
954 memcpy(ptr, c->buf, arg);
957 case EVP_CTRL_GCM_SET_IV_FIXED:
958 /* Special case: -1 length restores whole IV */
961 memcpy(gctx->iv, ptr, gctx->ivlen);
965 /* Fixed field must be at least 4 bytes and invocation field
968 if ((arg < 4) || (gctx->ivlen - arg) < 8)
971 memcpy(gctx->iv, ptr, arg);
973 RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
978 case EVP_CTRL_GCM_IV_GEN:
979 if (gctx->iv_gen == 0 || gctx->key_set == 0)
981 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
982 if (arg <= 0 || arg > gctx->ivlen)
984 memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
985 /* Invocation field will be at least 8 bytes in size and
986 * so no need to check wrap around or increment more than
989 ctr64_inc(gctx->iv + gctx->ivlen - 8);
993 case EVP_CTRL_GCM_SET_IV_INV:
994 if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
996 memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
997 CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
1001 case EVP_CTRL_AEAD_TLS1_AAD:
1002 /* Save the AAD for later use */
1005 memcpy(c->buf, ptr, arg);
1006 gctx->tls_aad_len = arg;
1008 unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
1009 /* Correct length for explicit IV */
1010 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
1011 /* If decrypting correct for tag too */
1013 len -= EVP_GCM_TLS_TAG_LEN;
1014 c->buf[arg-2] = len>>8;
1015 c->buf[arg-1] = len & 0xff;
1017 /* Extra padding: tag appended to record */
1018 return EVP_GCM_TLS_TAG_LEN;
1026 static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1027 const unsigned char *iv, int enc)
1029 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1034 #ifdef VPAES_CAPABLE
1037 vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
1038 CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
1039 (block128_f)vpaes_encrypt);
1043 AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
1044 CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
1047 /* If we have an iv can set it directly, otherwise use
1050 if (iv == NULL && gctx->iv_set)
1054 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1061 /* If key set use IV, otherwise copy */
1063 CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
1065 memcpy(gctx->iv, iv, gctx->ivlen);
1072 /* Handle TLS GCM packet format. This consists of the last portion of the IV
1073 * followed by the payload and finally the tag. On encrypt generate IV,
1074 * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
1078 static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1079 const unsigned char *in, size_t len)
1081 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1083 /* Encrypt/decrypt must be performed in place */
1086 /* Set IV from start of buffer or generate IV and write to start
1089 if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
1090 EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
1091 EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
1094 if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
1096 /* Fix buffer and length to point to payload */
1097 in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1098 out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
1099 len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1102 /* Encrypt payload */
1103 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1106 /* Finally write tag */
1107 CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
1108 rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
1113 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1116 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
1117 EVP_GCM_TLS_TAG_LEN);
1118 /* If tag mismatch wipe buffer */
1119 if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
1121 OPENSSL_cleanse(out, len);
1129 gctx->tls_aad_len = -1;
1133 static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1134 const unsigned char *in, size_t len)
1136 EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
1137 /* If not set up, return error */
1141 if (gctx->tls_aad_len >= 0)
1142 return aes_gcm_tls_cipher(ctx, out, in, len);
1146 if (!ctx->encrypt && gctx->taglen < 0)
1152 if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
1155 else if (ctx->encrypt)
1157 if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
1162 if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
1171 if (CRYPTO_gcm128_finish(&gctx->gcm,
1172 ctx->buf, gctx->taglen) != 0)
1177 CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
1179 /* Don't reuse the IV */
1186 #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
1187 | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
1188 | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
1190 BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
1191 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1192 BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
1193 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1194 BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
1195 EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
1197 static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1199 EVP_AES_XTS_CTX *xctx = c->cipher_data;
1200 if (type != EVP_CTRL_INIT)
1202 /* key1 and key2 are used as an indicator both key and IV are set */
1203 xctx->xts.key1 = NULL;
1204 xctx->xts.key2 = NULL;
1208 static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1209 const unsigned char *iv, int enc)
1211 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1217 /* key_len is two AES keys */
1218 #ifdef VPAES_CAPABLE
1223 vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1224 xctx->xts.block1 = (block128_f)vpaes_encrypt;
1228 vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1229 xctx->xts.block1 = (block128_f)vpaes_decrypt;
1232 vpaes_set_encrypt_key(key + ctx->key_len/2,
1233 ctx->key_len * 4, &xctx->ks2);
1234 xctx->xts.block2 = (block128_f)vpaes_encrypt;
1236 xctx->xts.key1 = &xctx->ks1;
1242 AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1243 xctx->xts.block1 = (block128_f)AES_encrypt;
1247 AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
1248 xctx->xts.block1 = (block128_f)AES_decrypt;
1251 AES_set_encrypt_key(key + ctx->key_len/2,
1252 ctx->key_len * 4, &xctx->ks2);
1253 xctx->xts.block2 = (block128_f)AES_encrypt;
1255 xctx->xts.key1 = &xctx->ks1;
1260 xctx->xts.key2 = &xctx->ks2;
1261 memcpy(ctx->iv, iv, 16);
1267 static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1268 const unsigned char *in, size_t len)
1270 EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
1271 if (!xctx->xts.key1 || !xctx->xts.key2)
1276 /* Requirement of SP800-38E */
1277 if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
1278 (len > (1L<<20)*16))
1280 EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
1284 if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
1290 #define aes_xts_cleanup NULL
1292 BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1293 BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1295 static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
1297 EVP_AES_CCM_CTX *cctx = c->cipher_data;
1309 case EVP_CTRL_CCM_SET_IVLEN:
1311 case EVP_CTRL_CCM_SET_L:
1312 if (arg < 2 || arg > 8)
1317 case EVP_CTRL_CCM_SET_TAG:
1318 if ((arg & 1) || arg < 4 || arg > 16)
1320 if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
1325 memcpy(c->buf, ptr, arg);
1330 case EVP_CTRL_CCM_GET_TAG:
1331 if (!c->encrypt || !cctx->tag_set)
1333 if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
1346 static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
1347 const unsigned char *iv, int enc)
1349 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1354 #ifdef VPAES_CAPABLE
1357 vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
1358 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1359 &cctx->ks, (block128_f)vpaes_encrypt);
1364 AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
1365 CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
1366 &cctx->ks, (block128_f)AES_encrypt);
1371 memcpy(ctx->iv, iv, 15 - cctx->L);
1377 static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
1378 const unsigned char *in, size_t len)
1380 EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
1381 CCM128_CONTEXT *ccm = &cctx->ccm;
1382 /* If not set up, return error */
1383 if (!cctx->iv_set && !cctx->key_set)
1385 if (!ctx->encrypt && !cctx->tag_set)
1391 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
1396 /* If have AAD need message length */
1397 if (!cctx->len_set && len)
1399 CRYPTO_ccm128_aad(ccm, in, len);
1402 /* EVP_*Final() doesn't return any data */
1405 /* If not set length yet do it */
1408 if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
1414 if (CRYPTO_ccm128_encrypt(ccm, in, out, len))
1422 if (!CRYPTO_ccm128_decrypt(ccm, in, out, len))
1424 unsigned char tag[16];
1425 if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
1427 if (!memcmp(tag, ctx->buf, cctx->M))
1432 OPENSSL_cleanse(out, len);
1441 #define aes_ccm_cleanup NULL
1443 BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1444 BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
1445 BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)