aes.h
1 /* aes.h
2  *
3  * Copyright (C) 2006-2020 wolfSSL Inc.
4  *
5  * This file is part of wolfSSL.
6  *
7  * wolfSSL is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * wolfSSL is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
20  */
21 
22 
23 
24 /* aes.h defines mini des openssl compatibility layer
25  *
26  */
27 
28 
29 #ifndef WOLFSSL_AES_H_
30 #define WOLFSSL_AES_H_
31 
32 #include <wolfssl/wolfcrypt/settings.h>
33 
34 #ifndef NO_AES
35 #include <wolfssl/openssl/ssl.h> /* for size_t */
36 
37 #ifdef __cplusplus
38  extern "C" {
39 #endif
40 
41 /* This structure wrapper is done because there is no aes_new function with
42  * OpenSSL compatibility layer. This makes code working with an AES structure
43  * to need the size of the structure. */
44 typedef struct WOLFSSL_AES_KEY {
45  /* aligned and big enough for Aes from wolfssl/wolfcrypt/aes.h */
46  ALIGN16 void* holder[(376 + WC_ASYNC_DEV_SIZE)/ sizeof(void*)];
47  #ifdef GCM_TABLE
48  /* key-based fast multiplication table. */
49  ALIGN16 void* M0[4096 / sizeof(void*)];
50  #endif /* GCM_TABLE */
51  #if defined(WOLFSSL_DEVCRYPTO) && \
52  (defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC))
53  /* large enough for additional devcrypto information */
54  void* devKey[288 / sizeof(void*)];
55  #endif
56  #ifdef WOLFSSL_AFALG
57  void* afalg_holder[288 / sizeof(void*)];
58  #endif
59  #ifdef HAVE_PKCS11
60  void* pkcs11_holder[(AES_MAX_ID_LEN + sizeof(int)) / sizeof(void*)];
61  #endif
62  #if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
63  void* async_holder[128 / sizeof(void*)];
64  #endif
65 } WOLFSSL_AES_KEY;
66 typedef WOLFSSL_AES_KEY AES_KEY;
67 
68 WOLFSSL_API int wolfSSL_AES_set_encrypt_key
69  (const unsigned char *, const int bits, AES_KEY *);
70 WOLFSSL_API int wolfSSL_AES_set_decrypt_key
71  (const unsigned char *, const int bits, AES_KEY *);
72 WOLFSSL_API void wolfSSL_AES_cbc_encrypt
73  (const unsigned char *in, unsigned char* out, size_t len,
74  AES_KEY *key, unsigned char* iv, const int enc);
75 WOLFSSL_API void wolfSSL_AES_ecb_encrypt
76  (const unsigned char *in, unsigned char* out,
77  AES_KEY *key, const int enc);
78 WOLFSSL_API void wolfSSL_AES_cfb128_encrypt
79  (const unsigned char *in, unsigned char* out, size_t len,
80  AES_KEY *key, unsigned char* iv, int* num, const int enc);
81 
82 #define AES_cbc_encrypt wolfSSL_AES_cbc_encrypt
83 #define AES_ecb_encrypt wolfSSL_AES_ecb_encrypt
84 #define AES_cfb128_encrypt wolfSSL_AES_cfb128_encrypt
85 #define AES_set_encrypt_key wolfSSL_AES_set_encrypt_key
86 #define AES_set_decrypt_key wolfSSL_AES_set_decrypt_key
87 
88 #ifdef WOLFSSL_AES_DIRECT
89 WOLFSSL_API void wolfSSL_AES_encrypt
90  (const unsigned char* input, unsigned char* output, AES_KEY *);
91 WOLFSSL_API void wolfSSL_AES_decrypt
92  (const unsigned char* input, unsigned char* output, AES_KEY *);
93 
94 #define AES_encrypt wolfSSL_AES_encrypt
95 #define AES_decrypt wolfSSL_AES_decrypt
96 #endif /* HAVE_AES_DIRECT */
97 
98 #ifndef AES_ENCRYPT
99 #define AES_ENCRYPT AES_ENCRYPTION
100 #endif
101 #ifndef AES_DECRYPT
102 #define AES_DECRYPT AES_DECRYPTION
103 #endif
104 
105 #ifdef __cplusplus
106  } /* extern "C" */
107 #endif
108 
109 #endif /* NO_AES */
110 
111 #endif /* WOLFSSL_AES_H_ */