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/* SPDX-License-Identifier: LGPL-2.1+ */
#include "hexdecoct.h"
#include "random-util.h"
#include "log.h"
#include "tests.h"
static void test_genuine_random_bytes(RandomFlags flags) {
uint8_t buf[16] = {};
unsigned i;
log_info("/* %s */", __func__);
for (i = 1; i < sizeof buf; i++) {
assert_se(genuine_random_bytes(buf, i, flags) == 0);
if (i + 1 < sizeof buf)
assert_se(buf[i] == 0);
hexdump(stdout, buf, i);
}
}
static void test_pseudo_random_bytes(void) {
uint8_t buf[16] = {};
unsigned i;
log_info("/* %s */", __func__);
for (i = 1; i < sizeof buf; i++) {
pseudo_random_bytes(buf, i);
if (i + 1 < sizeof buf)
assert_se(buf[i] == 0);
hexdump(stdout, buf, i);
}
}
static void test_rdrand(void) {
int r, i;
for (i = 0; i < 10; i++) {
unsigned long x = 0;
r = rdrand(&x);
if (r < 0) {
log_error_errno(r, "RDRAND failed: %m");
return;
}
printf("%lx\n", x);
}
}
int main(int argc, char **argv) {
test_setup_logging(LOG_DEBUG);
test_genuine_random_bytes(RANDOM_EXTEND_WITH_PSEUDO);
test_genuine_random_bytes(0);
test_genuine_random_bytes(RANDOM_BLOCK);
test_genuine_random_bytes(RANDOM_ALLOW_RDRAND);
test_pseudo_random_bytes();
test_rdrand();
return 0;
}
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