aes.h

00001 /* aes.h
00002  *
00003  * Copyright (C) 2006-2017 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * wolfSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 
00023 
00024 /*  aes.h defines mini des openssl compatibility layer
00025  *
00026  */
00027 
00028 
00029 #ifndef WOLFSSL_AES_H_
00030 #define WOLFSSL_AES_H_
00031 
00032 #include <wolfssl/wolfcrypt/settings.h>
00033 
00034 #ifndef NO_AES
00035 #include <wolfssl/openssl/ssl.h> /* for size_t */
00036 
00037 #ifdef __cplusplus
00038     extern "C" {
00039 #endif
00040 
00041 /* This structure wrapper is done because there is no aes_new function with
00042  * OpenSSL compatibility layer. This makes code working with an AES structure
00043  * to need the size of the structure. */
00044 typedef struct WOLFSSL_AES_KEY {
00045     /* aligned and big enough for Aes from wolfssl/wolfcrypt/aes.h */
00046     ALIGN16 void* holder[(360 + WC_ASYNC_DEV_SIZE)/ sizeof(void*)];
00047     #ifdef GCM_TABLE
00048     /* key-based fast multiplication table. */
00049     ALIGN16 void* M0[4096 / sizeof(void*)];
00050     #endif /* GCM_TABLE */
00051 } WOLFSSL_AES_KEY;
00052 typedef WOLFSSL_AES_KEY AES_KEY;
00053 
00054 WOLFSSL_API int wolfSSL_AES_set_encrypt_key
00055     (const unsigned char *, const int bits, AES_KEY *);
00056 WOLFSSL_API int wolfSSL_AES_set_decrypt_key
00057     (const unsigned char *, const int bits, AES_KEY *);
00058 WOLFSSL_API void wolfSSL_AES_cbc_encrypt
00059     (const unsigned char *in, unsigned char* out, size_t len,
00060      AES_KEY *key, unsigned char* iv, const int enc);
00061 WOLFSSL_API void wolfSSL_AES_ecb_encrypt
00062     (const unsigned char *in, unsigned char* out,
00063      AES_KEY *key, const int enc);
00064 WOLFSSL_API void wolfSSL_AES_cfb128_encrypt
00065     (const unsigned char *in, unsigned char* out, size_t len,
00066      AES_KEY *key, unsigned char* iv, int* num, const int enc);
00067 
00068 #define AES_cbc_encrypt     wolfSSL_AES_cbc_encrypt
00069 #define AES_ecb_encrypt     wolfSSL_AES_ecb_encrypt
00070 #define AES_cfb128_encrypt  wolfSSL_AES_cfb128_encrypt
00071 #define AES_set_encrypt_key wolfSSL_AES_set_encrypt_key
00072 #define AES_set_decrypt_key wolfSSL_AES_set_decrypt_key
00073 
00074 #ifdef WOLFSSL_AES_DIRECT
00075 WOLFSSL_API void wolfSSL_AES_encrypt
00076     (const unsigned char* input, unsigned char* output, AES_KEY *);
00077 WOLFSSL_API void wolfSSL_AES_decrypt
00078     (const unsigned char* input, unsigned char* output, AES_KEY *);
00079 
00080 #define AES_encrypt         wolfSSL_AES_encrypt
00081 #define AES_decrypt         wolfSSL_AES_decrypt
00082 #endif /* HAVE_AES_DIRECT */
00083 
00084 #ifndef AES_ENCRYPT
00085 #define AES_ENCRYPT AES_ENCRYPTION
00086 #endif
00087 #ifndef AES_DECRYPT
00088 #define AES_DECRYPT AES_DECRYPTION
00089 #endif
00090 
00091 #ifdef __cplusplus
00092     } /* extern "C" */
00093 #endif
00094 
00095 #endif /* NO_AES */
00096 
00097 #endif /* WOLFSSL_AES_H_ */
00098