int crypto_ed25519_sign(
const ed25519_key *key,
const byte *message, size_t message_size,
byte *signature, size_t *signature_size
) {
if (signature_size == NULL) {
return -1;
}
if (*signature_size < ED25519_SIG_SIZE) {
*signature_size = ED25519_SIG_SIZE;
return -2;
}
word32 len = *signature_size;
int r = wc_ed25519_sign_msg(
message, message_size,
signature, &len,
(ed25519_key *)key
);
*signature_size = len;
return r;
}
void bench_ed25519KeySign(void) {
int ret;
ed25519_key genKey;
#ifdef HAVE_ED25519_SIGN
double start, total, milliEach;
int i;
byte sig[ED25519_SIG_SIZE];
byte msg[512];
word32 x = 0;
#endif
wc_ed25519_init(&genKey);
ret = wc_ed25519_make_key(&rng, ED25519_KEY_SIZE, &genKey);
if (ret != 0) {
printf("ed25519_make_key failed\r\n");
return;
}
#ifdef HAVE_ED25519_SIGN
/* make dummy msg */
for (i = 0; i < (int) sizeof(msg); i++)
msg[i] = (byte) i;
start = current_time(1);
for (i = 0; i < agreeTimes; i++) {
x = sizeof(sig);
ret = wc_ed25519_sign_msg(msg, sizeof(msg), sig, &x, &genKey);
if (ret != 0) {
printf("ed25519_sign_msg failed\r\n");
return;
}
}
total = current_time(0) - start;
milliEach = total / agreeTimes / 1000; /* per second */
printf("ED25519 sign time %6.3f milliseconds, avg over %d"
" iterations\r\n", milliEach, agreeTimes);
#ifdef HAVE_ED25519_VERIFY
start = current_time(1);
for (i = 0; i < agreeTimes; i++) {
int verify = 0;
ret = wc_ed25519_verify_msg(sig, x, msg, sizeof(msg), &verify,
&genKey);
if (ret != 0 || verify != 1) {
printf("ed25519_verify_msg failed\r\n");
return;
}
}
total = current_time(0) - start;
milliEach = total / agreeTimes / 1000;
printf("ED25519 verify time %6.3f milliseconds, avg over %d"
" iterations\r\n", milliEach, agreeTimes);
#endif /* HAVE_ED25519_VERIFY */
#endif /* HAVE_ED25519_SIGN */
wc_ed25519_free(&genKey);
}