1 /* ====================================================================
2 * Copyright (c) 2002-2006 The OpenSSL Project. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
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
14 * distribution.
15 *
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/)"
20 *
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.
25 *
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.
29 *
30 * 6. Redistributions of any form whatsoever must retain the following
31 * acknowledgment:
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
34 *
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 * ==================================================================== */
48
49 #include <openssl/aes.h>
50
51 #include <assert.h>
52
53 #include "../aes/internal.h"
54 #include "../modes/internal.h"
55
56
AES_ctr128_encrypt(const uint8_t * in,uint8_t * out,size_t len,const AES_KEY * key,uint8_t ivec[AES_BLOCK_SIZE],uint8_t ecount_buf[AES_BLOCK_SIZE],unsigned int * num)57 void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
58 const AES_KEY *key, uint8_t ivec[AES_BLOCK_SIZE],
59 uint8_t ecount_buf[AES_BLOCK_SIZE], unsigned int *num) {
60 if (hwaes_capable()) {
61 CRYPTO_ctr128_encrypt_ctr32(in, out, len, key, ivec, ecount_buf, num,
62 aes_hw_ctr32_encrypt_blocks);
63 } else if (vpaes_capable()) {
64 #if defined(VPAES_CTR32)
65 // TODO(davidben): On ARM, where |BSAES| is additionally defined, this could
66 // use |vpaes_ctr32_encrypt_blocks_with_bsaes|.
67 CRYPTO_ctr128_encrypt_ctr32(in, out, len, key, ivec, ecount_buf, num,
68 vpaes_ctr32_encrypt_blocks);
69 #else
70 CRYPTO_ctr128_encrypt(in, out, len, key, ivec, ecount_buf, num,
71 vpaes_encrypt);
72 #endif
73 } else {
74 CRYPTO_ctr128_encrypt_ctr32(in, out, len, key, ivec, ecount_buf, num,
75 aes_nohw_ctr32_encrypt_blocks);
76 }
77 }
78
AES_ecb_encrypt(const uint8_t * in,uint8_t * out,const AES_KEY * key,const int enc)79 void AES_ecb_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key,
80 const int enc) {
81 assert(in && out && key);
82 assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
83
84 if (AES_ENCRYPT == enc) {
85 AES_encrypt(in, out, key);
86 } else {
87 AES_decrypt(in, out, key);
88 }
89 }
90
AES_cbc_encrypt(const uint8_t * in,uint8_t * out,size_t len,const AES_KEY * key,uint8_t * ivec,const int enc)91 void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
92 const AES_KEY *key, uint8_t *ivec, const int enc) {
93 if (hwaes_capable()) {
94 aes_hw_cbc_encrypt(in, out, len, key, ivec, enc);
95 return;
96 }
97
98 if (!vpaes_capable()) {
99 aes_nohw_cbc_encrypt(in, out, len, key, ivec, enc);
100 return;
101 }
102 if (enc) {
103 CRYPTO_cbc128_encrypt(in, out, len, key, ivec, AES_encrypt);
104 } else {
105 CRYPTO_cbc128_decrypt(in, out, len, key, ivec, AES_decrypt);
106 }
107 }
108
AES_ofb128_encrypt(const uint8_t * in,uint8_t * out,size_t length,const AES_KEY * key,uint8_t * ivec,int * num)109 void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
110 const AES_KEY *key, uint8_t *ivec, int *num) {
111 unsigned num_u = (unsigned)(*num);
112 CRYPTO_ofb128_encrypt(in, out, length, key, ivec, &num_u, AES_encrypt);
113 *num = (int)num_u;
114 }
115
AES_cfb128_encrypt(const uint8_t * in,uint8_t * out,size_t length,const AES_KEY * key,uint8_t * ivec,int * num,int enc)116 void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
117 const AES_KEY *key, uint8_t *ivec, int *num,
118 int enc) {
119 unsigned num_u = (unsigned)(*num);
120 CRYPTO_cfb128_encrypt(in, out, length, key, ivec, &num_u, enc, AES_encrypt);
121 *num = (int)num_u;
122 }
123