23 #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) 24 #include <sys/random.h> 25 #elif defined(__OpenBSD__) 28 #error "Couldn't identify the OS" 37 static int fill_random(
unsigned char* data,
size_t size) {
39 NTSTATUS
res = BCryptGenRandom(NULL, data, size, BCRYPT_USE_SYSTEM_PREFERRED_RNG);
40 if (
res != STATUS_SUCCESS || size > ULONG_MAX) {
45 #elif defined(__linux__) || defined(__FreeBSD__) 47 ssize_t
res = getrandom(data, size, 0);
48 if (
res < 0 || (
size_t)
res != size ) {
53 #elif defined(__APPLE__) || defined(__OpenBSD__) 56 int res = getentropy(data, size);
66 static void print_hex(
unsigned char* data,
size_t size) {
69 for (i = 0; i < size; i++) {
70 printf(
"%02x", data[i]);