27#if defined(WITH_CONTIKI)
36contiki_prng_impl(
unsigned char *buf,
size_t len) {
37 uint16_t v = random_rand();
38 while (len >
sizeof(v)) {
39 memcpy(buf, &v,
sizeof(v));
49#define coap_prng(Buf,Length) contiki_prng_impl((Buf), (Length))
50#define coap_prng_init(Value) random_init((uint16_t)(Value))
52#elif defined(WITH_LWIP) && defined(LWIP_RAND)
55lwip_prng_impl(
unsigned char *buf,
size_t len) {
56 u32_t v = LWIP_RAND();
57 while (len >
sizeof(v)) {
58 memcpy(buf, &v,
sizeof(v));
68#define coap_prng(Buf,Length) lwip_prng_impl((Buf), (Length))
69#define coap_prng_init(Value) (void)Value
int(* coap_rand_func_t)(void *out, size_t len)
Data type for random number generator function.
void coap_set_prng(coap_rand_func_t rng)
Replaces the current random number generation function with the default function rng.
int coap_prng(void *buf, size_t len)
Fills buf with len random bytes using the default pseudo random number generator.
void coap_prng_init(unsigned int seed)
Seeds the default random number generation function with the given seed.
#define COAP_STATIC_INLINE