crypto_aes.h

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/*
 *  Copyright (C) 2018-2021 Texas Instruments Incorporated
 *
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 *  are met:
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 *    Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
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 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef CRYPTO_AES_H_
#define CRYPTO_AES_H_
 
/* ========================================================================== */
/*                             Include Files                                  */
/* ========================================================================== */
 
#include <stdint.h>
#include <security/crypto.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* ========================================================================== */
/*                           Macros & Typedefs                                */
/* ========================================================================== */
 
#define CRYPTO_AES_DECRYPT          (0U)
 
#define CRYPTO_AES_ENCRYPT          (1U)
 
#define CRYPTO_AES_CMAC             (2U)
 
#define CRYPTO_AES_CBC_128                  (0U)
 
#define CRYPTO_AES_CBC_192                  (1U)
 
#define CRYPTO_AES_CBC_256                  (2U)
 
#define CRYPTO_AES_CMAC_128                 (3U)
 
#define CRYPTO_AES_CMAC_192                 (4U)
 
#define CRYPTO_AES_CMAC_256                 (5U)
 
#define CRYPTO_AES_IV_LENGTH          (16U)
 
#define CRYPTO_AES_KEY_LENGTH         (32U)
 
typedef void *Crypto_AesHandle;
 
typedef struct Crypto_AesContext_s Crypto_AesContext;
 
/* ========================================================================== */
/*                         Structure Declarations                             */
/* ========================================================================== */
 
typedef struct Crypto_AesParams_s
{
    uint32_t                aesMode;
    uint32_t                algoType;
    uint8_t                 iv[CRYPTO_AES_IV_LENGTH];
    uint8_t                 key[CRYPTO_AES_KEY_LENGTH];
    uint32_t                keySizeInBits;
    uint32_t                type;
} Crypto_AesParams;
 
typedef int32_t (*Crypto_AesOpenFxn)(Crypto_AesContext *ctx, const Crypto_AesParams *params);
typedef int32_t (*Crypto_AesCloseFxn)(Crypto_AesContext *ctx);
typedef int32_t (*Crypto_AesSetKeyEncFxn)(Crypto_AesContext *ctx);
typedef int32_t (*Crypto_AesSetKeyDecFxn)(Crypto_AesContext *ctx);
typedef int32_t (*Crypto_AesCbcFxn)(Crypto_AesContext *ctx, const uint8_t *input, uint32_t inputLength, uint8_t *output );
 
typedef struct Crypto_AesCbcFxns_s
{
    Crypto_AesOpenFxn        openFxn;
    Crypto_AesCloseFxn       closeFxn;
    Crypto_AesSetKeyEncFxn   setKeyEncFxn;
    Crypto_AesSetKeyDecFxn   setKeyDecFxn;
    Crypto_AesCbcFxn         cbcFxn;
} Crypto_AesCbcFxns;
 
struct Crypto_AesContext_s
{
    Crypto_AesParams    params;
    Crypto_AesCbcFxns   *fxns;
    uintptr_t           rsv[70U];
};
 
typedef struct
{
    Crypto_AesCbcFxns     *fxns;
} Crypto_AesConfig;
 
extern Crypto_AesConfig gCryptoAesConfig[CRYPTO_NUM_TYPE];
 
/* ========================================================================== */
/*                          Function Declarations                             */
/* ========================================================================== */
 
void Crypto_AesParams_init(Crypto_AesParams *params);
 
Crypto_AesHandle Crypto_aesOpen(Crypto_AesContext *ctx, const Crypto_AesParams *params);
 
int32_t Crypto_aesClose(Crypto_AesHandle handle);
 
int32_t Crypto_aesSetKeyEnc(Crypto_AesHandle handle);
 
int32_t Crypto_aesSetKeyDec(Crypto_AesHandle handle);
 
int32_t Crypto_aesCbc(Crypto_AesHandle handle, const uint8_t *input, uint32_t ilen, uint8_t *output );
 
/* ========================================================================== */
/*                       Static Function Definitions                          */
/* ========================================================================== */
 
/* None */
 
/* ========================================================================== */
/*                  Internal/Private Structure Declarations                   */
/* ========================================================================== */
 
/* None */
 
#ifdef __cplusplus
}
#endif
 
#endif /* CRYPTO_AES_H_ */