owner-nrf52sdk/nRF5_SDK_15.2.0/components/libraries/crypto/nrf_crypto_hash_backend.h

/**
 * Copyright (c) 2018, Nordic Semiconductor ASA
 *
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
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 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
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#ifndef NRF_CRYPTO_HASH_BACKEND_H__
#define NRF_CRYPTO_HASH_BACKEND_H__

#include "sdk_common.h"
#include "cc310_backend_hash.h"
#include "mbedtls_backend_hash.h"
#include "oberon_backend_hash.h"
#include "cc310_bl_backend_hash.h"
#include "nrf_sw_backend_hash.h"

#ifdef __cplusplus
extern "C" {
#endif

#if !NRF_MODULE_ENABLED(NRF_CRYPTO_HASH_SHA256)

/**@internal @brief Fallback type for SHA-256 hash context (if no backend is enabled).
 */
typedef nrf_crypto_hash_internal_context_t  nrf_crypto_backend_hash_sha256_context_t;

#endif

#if !NRF_MODULE_ENABLED(NRF_CRYPTO_HASH_SHA512)

/**@internal @brief Fallback type for SHA-512 hash context (if no backend is enabled).
 */
typedef nrf_crypto_hash_internal_context_t  nrf_crypto_backend_hash_sha512_context_t;

#endif


/** @internal @brief Union holding a hash context. */
typedef union
{
    nrf_crypto_backend_hash_sha256_context_t hash_sha256_context;   /**< @brief Holds context for SHA-256. */
    nrf_crypto_backend_hash_sha512_context_t hash_sha512_context;   /**< @brief Holds context for SHA-512. */
} nrf_crypto_backend_hash_context_t;


#ifdef __cplusplus
}
#endif

#endif // NRF_CRYPTO_HASH_BACKEND_H__