entropy_sources_mbedtls_riot.h

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/*
 * Copyright (C) 2020 HAW Hamburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    mbedtls_entropy_f_source_ptr func; 
    int strong;                        
} entropy_source_mbedtls_riot_t;

int riot_add_entropy_src_avail(mbedtls_entropy_context *ctx);

int riot_hwrng_poll(void *data, unsigned char *output, size_t len,
                     size_t *olen);

int riot_adc_poll(void *data, unsigned char *output, size_t len,
                  size_t *olen);
 
#if !defined(MODULE_MBEDTLS_ENTROPY_SOURCE_HWRNG) && \
    !defined(MODULE_ENTROPY_SOURCE_ADC_NOISE)
#error "You must enable at least one entropy source. Currently supported are \
        HWRNG and ADC_NOISE"
#endif
 
#ifdef __cplusplus
}
#endif