/*
 * Copyright (c) 2025, Nordic Semiconductor ASA
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
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 * modification, are permitted provided that the following conditions are met:
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 * 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 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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 * 3. Neither the name of the copyright holder nor the names of its
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 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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 */

#ifndef NRFX_CRACEN_H
#define NRFX_CRACEN_H

#include <nrfx.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @defgroup nrfx_cracen CRACEN driver
 * @{
 * @ingroup nrf_cracen
 * @brief   Cryptographic accelerator engine (CRACEN) peripheral driver
 */

/**
 * @brief Function for initializing the CRACEN CTR_DRBG random generator.
 *
 * @note This initialization is relatively slow and power consuming.
 *
 * @note This function assumes exclusive access to the CRACEN TRNG and CryptoMaster, and may
 *       not be used while any other component is using those peripherals.
 *
 * @retval NRFX_SUCCESS        Initialization was successful.
 * @retval NRFX_ERROR_INTERNAL Unexpected error.
 * @retval NRFX_ERROR_ALREADY  If it was was already initialized.
 */
nrfx_err_t nrfx_cracen_ctr_drbg_init(void);

/** @brief Function for uninitializing the CRACEN CTR_DRBG random generator. */
void nrfx_cracen_ctr_drbg_uninit(void);

/**
 * @brief Function for filling the specified /p p_buf buffer with /p size bytes of random data.
 *
 * @note This function assumes exclusive access to the CRACEN TRNG and CryptoMaster, and may
 *       not be used while any other component is using those peripherals.
 *
 * @param[out] p_buf Buffer into which to copy \p size bytes of entropy.
 * @param[in]  size  Number of bytes to copy.
 *
 * @retval NRFX_SUCCESS             Success.
 * @retval NRFX_ERROR_INVALID_PARAM Invalid inputs.
 * @retval NRFX_ERROR_INTERNAL      Unexpected error.
 */
nrfx_err_t nrfx_cracen_ctr_drbg_random_get(uint8_t * p_buf, size_t size);

/** @} */

#ifdef __cplusplus
}
#endif

#endif /* NRFX_CRACEN_H */
