98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/**
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* \file aes.h
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*
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* \brief AES block cipher
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*
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* Copyright (C) 2006-2010, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef IPSEC_AES_H
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#define IPSEC_AES_H
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#include <string.h>
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#include "ipsec_types.h"
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#if LWIP_IPSEC
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#ifdef _MSC_VER
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#include <basetsd.h>
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typedef UINT32 uint32_t;
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#else
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#include <inttypes.h>
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#endif
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#ifndef NO_SUPPORT_TLS
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#include "mbedtls/aes.h"
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#include "mbedtls/compat-1.3.h" // mbedtls
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#else
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#define AES_ENCRYPT 1
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#define AES_DECRYPT 0
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#define POLARSSL_ERR_AES_INVALID_KEY_LENGTH -0x0020 /**< Invalid key length. */
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#define POLARSSL_ERR_AES_INVALID_INPUT_LENGTH -0x0022 /**< Invalid data input length. */
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/**
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* \brief AES context structure
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*/
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typedef struct
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{
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int nr; /*!< number of rounds */
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uint32_t *rk; /*!< AES round keys */
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uint32_t buf[68]; /*!< unaligned data */
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}
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aes_context;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* AES-CBC function calculates a digest from a given data buffer and a given key.
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*
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* @param text pointer to input data
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* @param text_len length of input data
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* @param key pointer to encryption key (128/192/256 bits)
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* @param keysize length of input encryption key (128/192/256 bits)
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* @param iv initialization vector
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* @param mode defines whether encryption or decryption should be performed
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* @param output en- or decrypted input data
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* @return void
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*
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*/
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void ipsec_cipher_aes_cbc(unsigned char* text,
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int text_len,
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unsigned char* key,
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unsigned int keysize,
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unsigned char* iv,
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int mode,
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unsigned char* output);
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#ifdef __cplusplus
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}
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#endif
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#endif
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#endif /* aes.h */
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