nrf_cc3xx_platform_ctr_drbg.h

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/*
 * Copyright (c) 2019 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
#ifndef NRF_CC3XX_PLATFORM_CTR_DRBG_H__
#define NRF_CC3XX_PLATFORM_CTR_DRBG_H__
 
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
 
#include "nrf_cc3xx_platform_defines.h"
 
#ifdef __cplusplus
extern "C"
{
#endif
 
#define NRF_CC3XX_PLATFORM_ENTROPY_SIZE_WORDS (78)
 
typedef struct nrf_cc3xx_platform_ctr_drbg_context_t
{
    uint32_t is_initialized;                                
    uint32_t buffer[NRF_CC3XX_PLATFORM_ENTROPY_SIZE_WORDS]; 
    uint32_t reseed_interval;                               
} nrf_cc3xx_platform_ctr_drbg_context_t;
 
 
int nrf_cc3xx_platform_ctr_drbg_init(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context,
    const uint8_t * pers_string,
    size_t pers_string_len);
 
 
int nrf_cc3xx_platform_ctr_drbg_free(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context);
 
 
int nrf_cc3xx_platform_ctr_drbg_set_pr(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context,
    bool pr_enabled);
 
 
int nrf_cc3xx_platform_ctr_drbg_set_reseed_interval(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context, int interval);
 
 
int nrf_cc3xx_platform_ctr_drbg_reseed(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context,
    const uint8_t *additional,
    size_t add_len);
 
 
int nrf_cc3xx_platform_ctr_drbg_get_with_add(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context,
    uint8_t *buffer,
    size_t len,
    size_t *olen,
    const uint8_t *additional,
    size_t add_len);
 
 
int nrf_cc3xx_platform_ctr_drbg_get(
    nrf_cc3xx_platform_ctr_drbg_context_t * const context,
    uint8_t *buffer,
    size_t length,
    size_t* olen);
 
#ifdef __cplusplus
}
#endif
 
#endif /* NRF_CC3XX_PLATFORM_CTR_DRBG_H__ */