trng.h

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#ifndef MBEDTLS_TRNG_H
#define MBEDTLS_TRNG_H

#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#if defined(MBEDTLS_TRNG_C)

/***************************************************************************/
/***************************************************************************/
#include "em_device.h"
#include "mbedtls_ecode.h"
#include <stddef.h>

/* TRNG specific error codes: */

#define MBEDTLS_ERR_TRNG_CONDITIONING_TEST_FAILED             ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000001)

#define MBEDTLS_ERR_TRNG_NO_DATA                              ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000002)

#define MBEDTLS_ERR_TRNG_REPETITION_COUNT_TEST_FAILED         ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000003)

#define MBEDTLS_ERR_TRNG_ADAPTIVE_PROPORTION_TEST_64_FAILED   ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000004)

#define MBEDTLS_ERR_TRNG_ADAPTIVE_PROPORTION_TEST_4096_FAILED ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000005)

#define MBEDTLS_ERR_TRNG_NOISE_ALARM                          ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000006)

#define MBEDTLS_ERR_TRNG_PRELIMINARY_NOISE_ALARM              ((int)MBEDTLS_ERR_TRNG_BASE | 0x00000007)

typedef struct
{
    TRNG_TypeDef  *trng;      
}
mbedtls_trng_context;

void mbedtls_trng_init( mbedtls_trng_context *ctx );

void mbedtls_trng_free( mbedtls_trng_context *ctx );

int mbedtls_trng_set_key( mbedtls_trng_context *ctx, const unsigned char *key );

int mbedtls_trng_check_conditioning( mbedtls_trng_context *ctx );

int mbedtls_trng_check_entropy( mbedtls_trng_context *ctx );

int mbedtls_trng_poll( mbedtls_trng_context *ctx,
                       unsigned char *output, size_t len, size_t *olen );

void mbedtls_trng_soft_reset( mbedtls_trng_context *ctx );

#endif /* MBEDTLS_TRNG_C */

#endif /* MBEDTLS_TRNG_H */