static int
bench_mac_init (struct bench_obj *obj)
{
struct bench_mac_mode *mode = obj->priv;
gcry_mac_hd_t hd;
int err;
unsigned int keylen;
void *key;
obj->min_bufsize = BUF_START_SIZE;
obj->max_bufsize = BUF_END_SIZE;
obj->step_size = BUF_STEP_SIZE;
obj->num_measure_repetitions = num_measurement_repetitions;
keylen = gcry_mac_get_algo_keylen (mode->algo);
if (keylen == 0)
keylen = 32;
key = malloc (keylen);
if (!key)
{
fprintf (stderr, PGM ": couldn't allocate %d bytes\n", keylen);
exit (1);
}
memset(key, 42, keylen);
err = gcry_mac_open (&hd, mode->algo, 0, NULL);
if (err)
{
fprintf (stderr, PGM ": error opening mac `%s'\n",
gcry_mac_algo_name (mode->algo));
free (key);
exit (1);
}
err = gcry_mac_setkey (hd, key, keylen);
free (key);
if (err)
{
fprintf (stderr, PGM ": error setting key for mac `%s'\n",
gcry_mac_algo_name (mode->algo));
exit (1);
}
obj->priv = hd;
return 0;
}
static void
mac_bench_one (int algo, struct bench_mac_mode *pmode)
{
struct bench_mac_mode mode = *pmode;
struct bench_obj obj = { 0 };
double result;
mode.algo = algo;
if (mode.name[0] == '\0')
bench_print_algo (-18, gcry_mac_algo_name (algo));
else
bench_print_algo (18, mode.name);
obj.ops = mode.ops;
obj.priv = &mode;
result = do_slope_benchmark (&obj);
bench_print_result (result);
}