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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   CRYPTO_ctr128_encrypt(in, out, len, key, ivec, ecount_buf, num, AES_encrypt);
61 }
62 
AES_ecb_encrypt(const uint8_t * in,uint8_t * out,const AES_KEY * key,const int enc)63 void AES_ecb_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key,
64                      const int enc) {
65   assert(in && out && key);
66   assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
67 
68   if (AES_ENCRYPT == enc) {
69     AES_encrypt(in, out, key);
70   } else {
71     AES_decrypt(in, out, key);
72   }
73 }
74 
AES_cbc_encrypt(const uint8_t * in,uint8_t * out,size_t len,const AES_KEY * key,uint8_t * ivec,const int enc)75 void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
76                      const AES_KEY *key, uint8_t *ivec, const int enc) {
77   if (hwaes_capable()) {
78     aes_hw_cbc_encrypt(in, out, len, key, ivec, enc);
79     return;
80   }
81 
82 #if defined(AES_NOHW_CBC)
83   if (!vpaes_capable()) {
84     aes_nohw_cbc_encrypt(in, out, len, key, ivec, enc);
85     return;
86   }
87 #endif
88   if (enc) {
89     CRYPTO_cbc128_encrypt(in, out, len, key, ivec, AES_encrypt);
90   } else {
91     CRYPTO_cbc128_decrypt(in, out, len, key, ivec, AES_decrypt);
92   }
93 }
94 
AES_ofb128_encrypt(const uint8_t * in,uint8_t * out,size_t length,const AES_KEY * key,uint8_t * ivec,int * num)95 void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
96                         const AES_KEY *key, uint8_t *ivec, int *num) {
97   unsigned num_u = (unsigned)(*num);
98   CRYPTO_ofb128_encrypt(in, out, length, key, ivec, &num_u, AES_encrypt);
99   *num = (int)num_u;
100 }
101 
AES_cfb128_encrypt(const uint8_t * in,uint8_t * out,size_t length,const AES_KEY * key,uint8_t * ivec,int * num,int enc)102 void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
103                         const AES_KEY *key, uint8_t *ivec, int *num,
104                         int enc) {
105   unsigned num_u = (unsigned)(*num);
106   CRYPTO_cfb128_encrypt(in, out, length, key, ivec, &num_u, enc, AES_encrypt);
107   *num = (int)num_u;
108 }
109