AuroraMiddleware/libtomcrypt
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

improve ecc_test() output

Browse Source
This commit is contained in:
Steffen Jaeckel 2019-04-10 09:47:20 +02:00
parent 27d09b6104
commit 5ed32b73e6
1 changed files with 19 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
tests/ecc_test.c
View File

@ -296,10 +296,9 @@ static int _ecc_test_mp(void)
void *a, *modulus, *order;
ecc_point *G, *GG;
int i, err, primality;
char buf[4096];
if ((err = mp_init_multi(&modulus, &order, &a, NULL)) != CRYPT_OK) {
return err;
}
DO(mp_init_multi(&modulus, &order, &a, NULL));
G = ltc_ecc_new_point();
GG = ltc_ecc_new_point();
@ -310,34 +309,40 @@ static int _ecc_test_mp(void)
return CRYPT_MEM;
}
err = CRYPT_OK;
for (i = 0; ltc_ecc_curves[i].prime != NULL; i++) {
if ((err = mp_read_radix(a, (char *)ltc_ecc_curves[i].A, 16)) != CRYPT_OK) { goto done; }
if ((err = mp_read_radix(modulus, (char *)ltc_ecc_curves[i].prime, 16)) != CRYPT_OK) { goto done; }
if ((err = mp_read_radix(order, (char *)ltc_ecc_curves[i].order, 16)) != CRYPT_OK) { goto done; }
DO(mp_read_radix(a, (char *)ltc_ecc_curves[i].A, 16));
DO(mp_read_radix(modulus, (char *)ltc_ecc_curves[i].prime, 16));
DO(mp_read_radix(order, (char *)ltc_ecc_curves[i].order, 16));
/* is prime actually prime? */
if ((err = mp_prime_is_prime(modulus, 8, &primality)) != CRYPT_OK) { goto done; }
DO(mp_prime_is_prime(modulus, 8, &primality));
if (primality == 0) {
err = CRYPT_FAIL_TESTVECTOR;
goto done;
mp_tohex(modulus, buf);
printf("Modulus failed prime check: %s\n", buf);
}
/* is order prime ? */
if ((err = mp_prime_is_prime(order, 8, &primality)) != CRYPT_OK) { goto done; }
DO(mp_prime_is_prime(order, 8, &primality));
if (primality == 0) {
err = CRYPT_FAIL_TESTVECTOR;
goto done;
mp_tohex(order, buf);
printf("Order failed prime check: %s\n", buf);
}
if ((err = mp_read_radix(G->x, (char *)ltc_ecc_curves[i].Gx, 16)) != CRYPT_OK) { goto done; }
if ((err = mp_read_radix(G->y, (char *)ltc_ecc_curves[i].Gy, 16)) != CRYPT_OK) { goto done; }
DO(mp_read_radix(G->x, (char *)ltc_ecc_curves[i].Gx, 16));
DO(mp_read_radix(G->y, (char *)ltc_ecc_curves[i].Gy, 16));
mp_set(G->z, 1);
/* then we should have G == (order + 1)G */
if ((err = mp_add_d(order, 1, order)) != CRYPT_OK) { goto done; }
if ((err = ltc_mp.ecc_ptmul(order, G, GG, a, modulus, 1)) != CRYPT_OK) { goto done; }
DO(mp_add_d(order, 1, order));
DO(ltc_mp.ecc_ptmul(order, G, GG, a, modulus, 1));
if (mp_cmp(G->x, GG->x) != LTC_MP_EQ || mp_cmp(G->y, GG->y) != LTC_MP_EQ) {
err = CRYPT_FAIL_TESTVECTOR;
}
if (err != CRYPT_OK) {
goto done;
}
}