HL-PDJ-1/components/libraries/crypto/nrf_crypto_init.c

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#include "sdk_common.h"
#if NRF_MODULE_ENABLED(NRF_CRYPTO)

#include "nrf_crypto_init.h"
#include "nrf_section.h"


// Create a named section for crypto backend data
NRF_SECTION_DEF(crypto_data, const nrf_crypto_backend_info_t);


#define NRF_CRYPTO_BACKEND_SECTION_ITEM_GET(i)      NRF_SECTION_ITEM_GET(crypto_data, nrf_crypto_backend_info_t, (i))
#define NRF_CRYPTO_BACKEND_SECTION_ITEM_COUNT       NRF_SECTION_ITEM_COUNT(crypto_data, nrf_crypto_backend_info_t)

typedef enum
{
    UNINITIALIZED,
    INITIALIZING,
    INITIALIZED,
} nrf_crypto_state_t;

static volatile nrf_crypto_state_t m_state = UNINITIALIZED;


ret_code_t nrf_crypto_init(void)
{
    ret_code_t      ret_val;
    size_t const    num_backends = NRF_CRYPTO_BACKEND_SECTION_ITEM_COUNT;

    m_state = INITIALIZING;

    // Iterate through each backends to call the init function
    for (size_t i = 0; i < num_backends; i++)
    {
        nrf_crypto_backend_info_t const * p_backend = NRF_CRYPTO_BACKEND_SECTION_ITEM_GET(i);
        ret_val = p_backend->init_fn();
        if (ret_val != NRF_SUCCESS)
        {
            return ret_val;
        }
    }

    // Set nrf_crypto to initialized
    m_state = INITIALIZED;
    return NRF_SUCCESS;
}


ret_code_t nrf_crypto_uninit(void)
{
    ret_code_t      ret_val;
    size_t const    num_backends = NRF_CRYPTO_BACKEND_SECTION_ITEM_COUNT;

    // Iterate through each backends to call the uninit function
    for (size_t i = 0; i < num_backends; i++)
    {
        nrf_crypto_backend_info_t const * p_backend = NRF_CRYPTO_BACKEND_SECTION_ITEM_GET(i);
        ret_val = p_backend->uninit_fn();
        if (ret_val != NRF_SUCCESS)
        {
            return ret_val;
        }
    }

    // Set nrf_crypto to uninitialized
    m_state = UNINITIALIZED;
    return NRF_SUCCESS;
}


bool nrf_crypto_is_initialized(void)
{
    return (m_state == INITIALIZED);
}


bool nrf_crypto_is_initializing(void)
{
    return ((m_state == INITIALIZED) || m_state == INITIALIZING);
}

#endif // NRF_MODULE_ENABLED(NRF_CRYPTO)