lib64polarssl-devel/apidoc/entropy__poll_8h_source.html

#ifndef POLARSSL_ENTROPY_POLL_H

#define POLARSSL_ENTROPY_POLL_H


#include <string.h>


#if !defined(POLARSSL_CONFIG_FILE)

#include "config.h"

#else

#include POLARSSL_CONFIG_FILE

#endif


#ifdef __cplusplus

extern "C" {

#endif


/*

 * Default thresholds for built-in sources

 */

#define ENTROPY_MIN_PLATFORM    128

#define ENTROPY_MIN_HAVEGE      128

#define ENTROPY_MIN_HARDCLOCK    32

#if !defined(POLARSSL_NO_PLATFORM_ENTROPY)

int platform_entropy_poll( void *data,

                           unsigned char *output, size_t len, size_t *olen );

#endif


#if defined(POLARSSL_HAVEGE_C)

int havege_poll( void *data,

                 unsigned char *output, size_t len, size_t *olen );

#endif


#if defined(POLARSSL_TIMING_C)

int hardclock_poll( void *data,

                    unsigned char *output, size_t len, size_t *olen );

#endif


#ifdef __cplusplus

}

#endif


#endif /* entropy_poll.h */

config.h
Configuration options (set of defines)

hardclock_poll
int hardclock_poll(void *data, unsigned char *output, size_t len, size_t *olen)
hardclock-based entropy poll callback

platform_entropy_poll
int platform_entropy_poll(void *data, unsigned char *output, size_t len, size_t *olen)
Platform-specific entropy poll callback.

havege_poll
int havege_poll(void *data, unsigned char *output, size_t len, size_t *olen)
HAVEGE based entropy poll callback.