/**
 * Copyright (c) 2016 - 2017, Nordic Semiconductor ASA
 * 
 * All rights reserved.
 * 
 * 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.
 * 
 * 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
 *    conditions and the following disclaimer in the documentation and/or other
 *    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.
 * 
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 * 
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
#include "sdk_common.h"
#if NRF_MODULE_ENABLED(NRF_CRYPTO)

#if defined(NRF_CRYPTO_BACKEND_CC310_LIB) && (NRF_CRYPTO_BACKEND_CC310_LIB == 1)

#include "nrf_crypto.h"
#include "nrf_crypto_rng.h"
#include "cc310_lib_init.h"
#include "crys_rnd.h"

extern CRYS_RND_Context_t    *  gp_rnd_context;

static uint32_t rng_result_get(CRYSError_t crys_error)
{
    uint32_t        ret_val;

    switch(crys_error)
    {
        case CRYS_OK:
            ret_val = NRF_SUCCESS;
            break;

        default:
            ret_val = NRF_ERROR_INTERNAL;
            break;
    }

    return ret_val;
}

uint32_t nrf_crypto_rng_init(void)
{
    // No need to do anything as library init takes care of initialization of rng.
    return NRF_SUCCESS;
}

uint32_t nrf_crypto_rng_vector_generate(uint8_t * p_target, uint32_t length)
{
    uint32_t        ret_val;
    CRYSError_t     crys_error;

    if (p_target == NULL)
    {
        return NRF_ERROR_NULL;
    }

    crys_error = CRYS_RND_GenerateVector(&gp_rnd_context->rndState, length, p_target);
    ret_val = rng_result_get(crys_error);
    return ret_val;
}

#endif // NRF_CRYPTO_BACKEND_CC310_LIB

#endif // NRF_MODULE_ENABLED(NRF_CRYPTO)