crypto.h

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/*
 *  Copyright (C) 2021 Texas Instruments Incorporated
 *
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 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    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
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 */
 
#ifndef CRYPTO_TOP_H_
#define CRYPTO_TOP_H_
 
#ifdef __cplusplus
extern "C"
{
#endif
 
/* ========================================================================== */
/*                             Include Files                                  */
/* ========================================================================== */
 
#include <stdint.h>
 
/* ========================================================================== */
/*                           Macros & Typedefs                                */
/* ========================================================================== */
 
#define CRYPTO_HMAC_SHA_MAX_KEYLEN_BYTES      (128U)
 
#define CRYPTO_HMAC_SHA512_KEYLEN_BYTES       (128U)
 
#define CRYPTO_HMAC_SHA1_KEYLEN_BYTES         (64U)
 
#define CRYPTO_HMAC_SHA256_KEYLEN_BYTES       (64U)
 
#define CRYPTO_HMAC_SHA_IPAD                  (0x36U)
 
#define CRYPTO_HMAC_SHA_OPAD                  (0x5CU)
 
#define CRYPTO_AES_CMAC_KEY_LENGTH            (16U)
 
#define CRYPTO_AES_BLOCK_LENGTH               (16U)
 
typedef void *Crypto_Handle;
 
/* ========================================================================== */
/*                         Structure Declarations                             */
/* ========================================================================== */
 
typedef struct
{
    void               *drvHandle;
} Crypto_Context;
 
typedef struct
{
    uint32_t                authMode;
    uint8_t                 key[CRYPTO_HMAC_SHA_MAX_KEYLEN_BYTES];
    uint32_t                keySizeInBytes;
    uint8_t                 iPad[CRYPTO_HMAC_SHA_MAX_KEYLEN_BYTES];
    uint8_t                 oPad[CRYPTO_HMAC_SHA_MAX_KEYLEN_BYTES];
    uint8_t                 aesWithKeyAppliedToZeroInput[CRYPTO_AES_BLOCK_LENGTH];
    uint8_t                 key1[CRYPTO_AES_CMAC_KEY_LENGTH];
    uint8_t                 key2[CRYPTO_AES_CMAC_KEY_LENGTH];
} Crypto_Params;
 
/* ========================================================================== */
/*                          Function Declarations                             */
/* ========================================================================== */
 
void Crypto_init(void);
 
void Crypto_deinit(void);
 
Crypto_Handle Crypto_open(Crypto_Context *ctx);
 
int32_t Crypto_close(Crypto_Handle handle);
 
int32_t Crypto_hmacSha(Crypto_Params *params);
 
int32_t Crypto_cmacGenSubKeys(Crypto_Params *params);
/* ========================================================================== */
/*                       Static Function Definitions                          */
/* ========================================================================== */
 
/* None */
 
#ifdef __cplusplus
}
#endif
 
#endif  /* CRYPTO_TOP_H_ */