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#include <tomcrypt_test.h>
#ifdef LTC_MECC
static int sizes[] = {
#ifdef ECC112
14,
#endif
#ifdef ECC128
16,
#endif
#ifdef ECC160
20,
#endif
#ifdef ECC192
24,
#endif
#ifdef ECC224
28,
#endif
#ifdef ECC256
32,
#endif
#ifdef ECC384
48,
#endif
#ifdef ECC521
65
#endif
};
#ifdef LTC_ECC_SHAMIR
int ecc_test_shamir(void)
{
void *modulus, *mp, *kA, *kB, *rA, *rB;
ecc_point *G, *A, *B, *C1, *C2;
int x, y, z;
unsigned char buf[ECC_BUF_SIZE];
DO(mp_init_multi(&kA, &kB, &rA, &rB, &modulus, NULL));
LTC_ARGCHK((G = ltc_ecc_new_point()) != NULL);
LTC_ARGCHK((A = ltc_ecc_new_point()) != NULL);
LTC_ARGCHK((B = ltc_ecc_new_point()) != NULL);
LTC_ARGCHK((C1 = ltc_ecc_new_point()) != NULL);
LTC_ARGCHK((C2 = ltc_ecc_new_point()) != NULL);
for (x = 0; x < (int)(sizeof(sizes)/sizeof(sizes[0])); x++) {
/* get the base point */
for (z = 0; ltc_ecc_sets[z].name; z++) {
if (sizes[z] < ltc_ecc_sets[z].size) break;
}
LTC_ARGCHK(ltc_ecc_sets[z].name != NULL);
/* load it */
DO(mp_read_radix(G->x, ltc_ecc_sets[z].Gx, 16));
DO(mp_read_radix(G->y, ltc_ecc_sets[z].Gy, 16));
DO(mp_set(G->z, 1));
DO(mp_read_radix(modulus, ltc_ecc_sets[z].prime, 16));
DO(mp_montgomery_setup(modulus, &mp));
/* do 100 random tests */
for (y = 0; y < 100; y++) {
/* pick a random r1, r2 */
LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]);
DO(mp_read_unsigned_bin(rA, buf, sizes[x]));
LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]);
DO(mp_read_unsigned_bin(rB, buf, sizes[x]));
/* compute rA * G = A */
DO(ltc_mp.ecc_ptmul(rA, G, A, modulus, 1));
/* compute rB * G = B */
DO(ltc_mp.ecc_ptmul(rB, G, B, modulus, 1));
/* pick a random kA, kB */
LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]);
DO(mp_read_unsigned_bin(kA, buf, sizes[x]));
LTC_ARGCHK(yarrow_read(buf, sizes[x], &yarrow_prng) == sizes[x]);
DO(mp_read_unsigned_bin(kB, buf, sizes[x]));
/* now, compute kA*A + kB*B = C1 using the older method */
DO(ltc_mp.ecc_ptmul(kA, A, C1, modulus, 0));
DO(ltc_mp.ecc_ptmul(kB, B, C2, modulus, 0));
DO(ltc_mp.ecc_ptadd(C1, C2, C1, modulus, mp));
DO(ltc_mp.ecc_map(C1, modulus, mp));
/* now compute using mul2add */
DO(ltc_mp.ecc_mul2add(A, kA, B, kB, C2, modulus));
/* is they the sames? */
if ((mp_cmp(C1->x, C2->x) != LTC_MP_EQ) || (mp_cmp(C1->y, C2->y) != LTC_MP_EQ) || (mp_cmp(C1->z, C2->z) != LTC_MP_EQ)) {
fprintf(stderr, "ECC failed shamir test: size=%d, testno=%d\n", sizes[x], y);
return 1;
}
}
mp_montgomery_free(mp);
}
ltc_ecc_del_point(C2);
ltc_ecc_del_point(C1);
ltc_ecc_del_point(B);
ltc_ecc_del_point(A);
ltc_ecc_del_point(G);
mp_clear_multi(kA, kB, rA, rB, modulus, NULL);
return 0;
}
#endif
int ecc_tests (void)
{
unsigned char buf[4][4096];
unsigned long x, y, z, s;
int stat, stat2;
ecc_key usera, userb, pubKey, privKey;
DO(ecc_test ());
DO(ecc_test ());
DO(ecc_test ());
DO(ecc_test ());
DO(ecc_test ());
for (s = 0; s < (sizeof(sizes)/sizeof(sizes[0])); s++) {
/* make up two keys */
DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &usera));
DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &userb));
/* make the shared secret */
x = sizeof(buf[0]);
DO(ecc_shared_secret (&usera, &userb, buf[0], &x));
y = sizeof(buf[1]);
DO(ecc_shared_secret (&userb, &usera, buf[1], &y));
if (y != x) {
fprintf(stderr, "ecc Shared keys are not same size.");
return 1;
}
if (memcmp (buf[0], buf[1], x)) {
fprintf(stderr, "ecc Shared keys not same contents.");
return 1;
}
/* now export userb */
y = sizeof(buf[0]);
DO(ecc_export (buf[1], &y, PK_PUBLIC, &userb));
ecc_free (&userb);
/* import and make the shared secret again */
DO(ecc_import (buf[1], y, &userb));
z = sizeof(buf[0]);
DO(ecc_shared_secret (&usera, &userb, buf[2], &z));
if (z != x) {
fprintf(stderr, "failed. Size don't match?");
return 1;
}
if (memcmp (buf[0], buf[2], x)) {
fprintf(stderr, "Failed. Contents didn't match.");
return 1;
}
/* export with ANSI X9.63 */
y = sizeof(buf[1]);
DO(ecc_ansi_x963_export(&userb, buf[1], &y));
ecc_free (&userb);
/* now import the ANSI key */
DO(ecc_ansi_x963_import(buf[1], y, &userb));
/* shared secret */
z = sizeof(buf[0]);
DO(ecc_shared_secret (&usera, &userb, buf[2], &z));
if (z != x) {
fprintf(stderr, "failed. Size don't match?");
return 1;
}
if (memcmp (buf[0], buf[2], x)) {
fprintf(stderr, "Failed. Contents didn't match.");
return 1;
}
ecc_free (&usera);
ecc_free (&userb);
/* test encrypt_key */
DO(ecc_make_key (&yarrow_prng, find_prng ("yarrow"), sizes[s], &usera));
/* export key */
x = sizeof(buf[0]);
DO(ecc_export(buf[0], &x, PK_PUBLIC, &usera));
DO(ecc_import(buf[0], x, &pubKey));
x = sizeof(buf[0]);
DO(ecc_export(buf[0], &x, PK_PRIVATE, &usera));
DO(ecc_import(buf[0], x, &privKey));
for (x = 0; x < 32; x++) {
buf[0][x] = x;
}
y = sizeof (buf[1]);
DO(ecc_encrypt_key (buf[0], 32, buf[1], &y, &yarrow_prng, find_prng ("yarrow"), find_hash ("sha256"), &pubKey));
zeromem (buf[0], sizeof (buf[0]));
x = sizeof (buf[0]);
DO(ecc_decrypt_key (buf[1], y, buf[0], &x, &privKey));
if (x != 32) {
fprintf(stderr, "Failed (length)");
return 1;
}
for (x = 0; x < 32; x++) {
if (buf[0][x] != x) {
fprintf(stderr, "Failed (contents)");
return 1;
}
}
/* test sign_hash */
for (x = 0; x < 16; x++) {
buf[0][x] = x;
}
x = sizeof (buf[1]);
DO(ecc_sign_hash (buf[0], 16, buf[1], &x, &yarrow_prng, find_prng ("yarrow"), &privKey));
DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat, &pubKey));
buf[0][0] ^= 1;
DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat2, &privKey));
if (!(stat == 1 && stat2 == 0)) {
fprintf(stderr, "ecc_verify_hash failed %d, %d, ", stat, stat2);
return 1;
}
ecc_free (&usera);
ecc_free (&pubKey);
ecc_free (&privKey);
}
#ifdef LTC_ECC_SHAMIR
return ecc_test_shamir();
#else
return 0;
#endif
}
#else
int ecc_tests(void)
{
fprintf(stderr, "NOP");
return 0;
}
#endif
/* $Source$ */
/* $Revision$ */
/* $Date$ */
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