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/* aes.h
*
* Copyright (C) 2006-2020 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
/* aes.h defines mini des openssl compatibility layer
*
*/
#ifndef WOLFSSL_AES_H_
#define WOLFSSL_AES_H_
#include <wolfssl/wolfcrypt/settings.h>
#ifndef NO_AES
#include <wolfssl/openssl/ssl.h> /* for size_t */
#ifdef __cplusplus
extern "C" {
#endif
/* This structure wrapper is done because there is no aes_new function with
* OpenSSL compatibility layer. This makes code working with an AES structure
* to need the size of the structure. */
typedef struct WOLFSSL_AES_KEY {
/* aligned and big enough for Aes from wolfssl/wolfcrypt/aes.h */
ALIGN16 void* holder[(376 + WC_ASYNC_DEV_SIZE)/ sizeof(void*)];
#ifdef GCM_TABLE
/* key-based fast multiplication table. */
ALIGN16 void* M0[4096 / sizeof(void*)];
#endif /* GCM_TABLE */
#if defined(WOLFSSL_DEVCRYPTO) && \
(defined(WOLFSSL_DEVCRYPTO_AES) || defined(WOLFSSL_DEVCRYPTO_CBC))
/* large enough for additional devcrypto information */
void* devKey[288 / sizeof(void*)];
#endif
#ifdef WOLFSSL_AFALG
void* afalg_holder[288 / sizeof(void*)];
#endif
#ifdef HAVE_PKCS11
void* pkcs11_holder[(AES_MAX_ID_LEN + sizeof(int)) / sizeof(void*)];
#endif
#if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
void* async_holder[128 / sizeof(void*)];
#endif
} WOLFSSL_AES_KEY;
typedef WOLFSSL_AES_KEY AES_KEY;
WOLFSSL_API int wolfSSL_AES_set_encrypt_key
(const unsigned char *, const int bits, AES_KEY *);
WOLFSSL_API int wolfSSL_AES_set_decrypt_key
(const unsigned char *, const int bits, AES_KEY *);
WOLFSSL_API void wolfSSL_AES_cbc_encrypt
(const unsigned char *in, unsigned char* out, size_t len,
AES_KEY *key, unsigned char* iv, const int enc);
WOLFSSL_API void wolfSSL_AES_ecb_encrypt
(const unsigned char *in, unsigned char* out,
AES_KEY *key, const int enc);
WOLFSSL_API void wolfSSL_AES_cfb128_encrypt
(const unsigned char *in, unsigned char* out, size_t len,
AES_KEY *key, unsigned char* iv, int* num, const int enc);
#define AES_cbc_encrypt wolfSSL_AES_cbc_encrypt
#define AES_ecb_encrypt wolfSSL_AES_ecb_encrypt
#define AES_cfb128_encrypt wolfSSL_AES_cfb128_encrypt
#define AES_set_encrypt_key wolfSSL_AES_set_encrypt_key
#define AES_set_decrypt_key wolfSSL_AES_set_decrypt_key
#ifdef WOLFSSL_AES_DIRECT
WOLFSSL_API void wolfSSL_AES_encrypt
(const unsigned char* input, unsigned char* output, AES_KEY *);
WOLFSSL_API void wolfSSL_AES_decrypt
(const unsigned char* input, unsigned char* output, AES_KEY *);
#define AES_encrypt wolfSSL_AES_encrypt
#define AES_decrypt wolfSSL_AES_decrypt
#endif /* HAVE_AES_DIRECT */
#ifndef AES_ENCRYPT
#define AES_ENCRYPT AES_ENCRYPTION
#endif
#ifndef AES_DECRYPT
#define AES_DECRYPT AES_DECRYPTION
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* NO_AES */
#endif /* WOLFSSL_AES_H_ */
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