C++ (Cpp) twister_init_by_array64 예제들

예제 #1

파일: random.c 프로젝트: Baguage/cctools

void random_init (void)
{
	static int random_initialized = 0;
	if (random_initialized) return;
	int fd = open("/dev/urandom", O_RDONLY);
	if (fd == -1) {
		fd = open("/dev/random", O_RDONLY);
	}
	if (fd >= 0) {
		uint64_t seed[8];
		if (full_read(fd, seed, sizeof(seed)) < (int64_t)sizeof(seed))
			goto nasty_fallback;
		srand(seed[0]);
		twister_init_by_array64(seed, sizeof(seed)/sizeof(seed[0]));
	} else {
		uint64_t seed;
nasty_fallback:
		debug(D_NOTICE, "warning: falling back to low-quality entropy");
		seed = (uint64_t)getpid() ^ (uint64_t)time(NULL);
		seed |= (((uint64_t)(uintptr_t)&seed) << 32); /* using ASLR */
		srand(seed);
		twister_init_genrand64(seed);
	}
	close(fd);
	random_initialized = 1;
	return;
}

예제 #2

파일: random.c 프로젝트: LydiaBrothers/cctools

void random_init (void)
{
	int fd = open("/dev/urandom", O_RDONLY);
	if (fd == -1) {
		fd = open("/dev/random", O_RDONLY);
	}
	if (fd >= 0) {
		uint64_t seed[8];
		if (full_read(fd, seed, sizeof(seed)) < (int64_t)sizeof(seed))
			goto nasty_fallback;
		srand(seed[0]);
		twister_init_by_array64(seed, sizeof(seed)/sizeof(seed[0]));
	} else {
		uint64_t seed;
nasty_fallback:
		seed = (uint64_t)getpid() ^ (uint64_t)time(NULL);
		seed |= (((uint64_t)(uintptr_t)&seed) << 32); /* using ASLR */
		srand(seed);
		twister_init_genrand64(seed);
	}
	close(fd);
	return;
}