crypto_util.h

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/*
 *  Copyright (C) 2021 Texas Instruments Incorporated
 *
 *  Redistribution and use in source and binary forms, with or without
 *  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.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    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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 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef PKA_UTIL_H_
#define PKA_UTIL_H_
 
#ifdef __cplusplus
extern "C"
{
#endif
 
 
/* ========================================================================== */
/*                             Include Files                                  */
/* ========================================================================== */
 
#include <stdint.h>
 
/* ========================================================================== */
/*                           Macros & Typedefs                                */
/* ========================================================================== */
 
#define HASH_ALG_SHA1             (0x0U)
 
#define HASH_ALG_SHA2_256         (0x1U)
 
#define HASH_ALG_SHA2_512         (0x2U)
 
#define HASH_ALG_SHA2_384         (0x3U)
 
/* ========================================================================== */
/*                            Global Variables                                */
/* ========================================================================== */
 
/* None */
 
/* ========================================================================== */
/*                              Function Declarations                          */
/* ========================================================================== */
 
void Crypto_Uint8ToUint32(const uint8_t *source, uint32_t sourceLengthInBytes, uint32_t *dest);
 
void Crypto_Uint32ToUint8(const uint32_t *src, uint32_t sourceLengthInBytes, uint8_t *dest);
 
void Crypto_Uint32ToBigInt(uint32_t *source, uint32_t sourceLengthInWords, uint32_t *dest);
 
void Crypto_bigIntToUint32(uint32_t *source, uint32_t sourceLengthInWords, uint32_t *dest);
 
void Crypto_PKCSPaddingForSign(const uint8_t *shaHash, uint32_t keyLengthInBytes, uint32_t typeOfAlgo, uint8_t *output);
 
typedef uint32_t (*Crypto_ShaCallback)(uint8_t *inputBuf, uint32_t inputLenBytes, uint8_t *digestBuf);
 
struct Crypto_PSSSaltInfo {
    const uint8_t *msgHash;
    const uint8_t *salt;
    uint32_t       saltLenInBytes;
};
 
uint32_t Crypto_MGF1(Crypto_ShaCallback shaCbFxn, uint32_t hashLenInBytes,
                      uint8_t *seedBuf, uint32_t seedLenInBytes,
                      uint8_t *mask, uint32_t maskLenInBytes);
 
uint32_t Crypto_PSSPaddingForSign(Crypto_ShaCallback shaCbFxn, uint32_t typeOfAlgo,
                                   const struct Crypto_PSSSaltInfo *saltInfo,
                                   uint32_t modBits, uint32_t emLenInBytes, uint8_t *output);
 
uint32_t Crypto_PSSVerify(Crypto_ShaCallback shaCbFxn, uint32_t typeOfAlgo,
                           const uint8_t *msgHash, uint32_t saltLenInBytes,
                           uint32_t modBits, const uint8_t *EM, uint32_t emLenInBytes);
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* PKA_UTIL_H_ */