nrf_cc3xx_platform_hmac_drbg.h

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/*
 * Copyright (c) 2021 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
#ifndef NRF_CC3XX_PLATFORM_HMAC_DRBG_H__
#define NRF_CC3XX_PLATFORM_HMAC_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_HMAC_CTX_SIZE_WORDS (78)
 
typedef struct nrf_cc3xx_platform_hmac_drbg_context_t
{
    uint32_t is_initialized;                                 
    uint32_t buffer[NRF_CC3XX_PLATFORM_HMAC_CTX_SIZE_WORDS]; 
    uint32_t reseed_interval;                                
} nrf_cc3xx_platform_hmac_drbg_context_t;
 
 
int nrf_cc3xx_platform_hmac_drbg_init(nrf_cc3xx_platform_hmac_drbg_context_t * const context,
                                      const uint8_t * pers_string,
                                      size_t pers_string_len);
 
 
void nrf_cc3xx_platform_hmac_drbg_free(nrf_cc3xx_platform_hmac_drbg_context_t * const context);
 
 
int nrf_cc3xx_platform_hmac_drbg_set_pr(nrf_cc3xx_platform_hmac_drbg_context_t * const context, bool pr_enabled);
 
 
int nrf_cc3xx_platform_hmac_drbg_set_reseed_interval(nrf_cc3xx_platform_hmac_drbg_context_t * const context, int interval);
 
 
int nrf_cc3xx_platform_hmac_drbg_reseed(nrf_cc3xx_platform_hmac_drbg_context_t * const context,
                                                                            const uint8_t * additional,
                                                                            size_t add_len);
 
 
int nrf_cc3xx_platform_hmac_drbg_get_with_add(nrf_cc3xx_platform_hmac_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_hmac_drbg_get(nrf_cc3xx_platform_hmac_drbg_context_t * const context,
                                     uint8_t * buffer,
                                     size_t len,
                                     size_t * olen);
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* NRF_CC3XX_PLATFORM_HMAC_DRBG_H__ */