void RAND_add(const void *buf,int num,double entropy);
int RAND_load_file(const char *file,long max_bytes);
int RAND_write_file(const char *file);
void RAND_add(const void *buf,int num,double entropy);
int RAND_load_file(const char *file,long max_bytes);
int RAND_write_file(const char *file);