reference/develop/coap__prng_8h_source.html

/*

 * coap_prng.h -- Pseudo Random Numbers

 *

 * Copyright (C) 2010-2024 Olaf Bergmann <bergmann@tzi.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 *

 * This file is part of the CoAP library libcoap. Please see README for terms

 * of use.

 */


#ifndef COAP_PRNG_H_

#define COAP_PRNG_H_


typedef int (*coap_rand_func_t)(void *out, size_t len);


void coap_set_prng(coap_rand_func_t rng);


COAP_API void coap_prng_init(unsigned int seed);


COAP_API int coap_prng(void *buf, size_t len);


#endif /* COAP_PRNG_H_ */

COAP_API
#define COAP_API
Definition coap_libcoap_build.h:41

coap_rand_func_t
int(* coap_rand_func_t)(void *out, size_t len)
Data type for random number generator function.
Definition coap_prng.h:32

coap_set_prng
void coap_set_prng(coap_rand_func_t rng)
Replaces the current random number generation function with the default function rng.
Definition coap_prng.c:161

coap_prng
COAP_API int coap_prng(void *buf, size_t len)
Fills buf with len random bytes using the default pseudo random number generator.
Definition coap_prng.c:66

coap_prng_init
COAP_API void coap_prng_init(unsigned int seed)
Seeds the default random number generation function with the given seed.
Definition coap_prng.c:59