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Add specific VERIFY tests for _fe_cmov

This commit is contained in:
Peter Dettman 2015-07-06 12:41:30 +09:30
parent a0601cd79c
commit 3f3964e49c
1 changed files with 16 additions and 6 deletions
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22
src/tests.c
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@ -47,9 +47,7 @@ void random_field_element_magnitude(secp256k1_fe_t *fe) {
secp256k1_fe_negate(&zero, &zero, 0); secp256k1_fe_negate(&zero, &zero, 0);
secp256k1_fe_mul_int(&zero, n - 1); secp256k1_fe_mul_int(&zero, n - 1);
secp256k1_fe_add(fe, &zero); secp256k1_fe_add(fe, &zero);
#ifdef VERIFY VERIFY_CHECK(fe->magnitude == n);
CHECK(fe->magnitude == n);
#endif
} }
void random_group_element_test(secp256k1_ge_t *ge) { void random_group_element_test(secp256k1_ge_t *ge) {
@ -752,7 +750,7 @@ void run_field_misc(void) {
secp256k1_fe_t z; secp256k1_fe_t z;
secp256k1_fe_t q; secp256k1_fe_t q;
secp256k1_fe_t fe5 = SECP256K1_FE_CONST(0, 0, 0, 0, 0, 0, 0, 5); secp256k1_fe_t fe5 = SECP256K1_FE_CONST(0, 0, 0, 0, 0, 0, 0, 5);
int i; int i, j;
for (i = 0; i < 5*count; i++) { for (i = 0; i < 5*count; i++) {
secp256k1_fe_storage_t xs, ys, zs; secp256k1_fe_storage_t xs, ys, zs;
random_fe(&x); random_fe(&x);
@ -765,15 +763,27 @@ void run_field_misc(void) {
/* Test fe conditional move; z is not normalized here. */ /* Test fe conditional move; z is not normalized here. */
q = x; q = x;
secp256k1_fe_cmov(&x, &z, 0); secp256k1_fe_cmov(&x, &z, 0);
VERIFY_CHECK(!x.normalized && x.magnitude == z.magnitude);
secp256k1_fe_cmov(&x, &x, 1); secp256k1_fe_cmov(&x, &x, 1);
CHECK(fe_memcmp(&x, &z) != 0); CHECK(fe_memcmp(&x, &z) != 0);
CHECK(fe_memcmp(&x, &q) == 0); CHECK(fe_memcmp(&x, &q) == 0);
secp256k1_fe_cmov(&q, &z, 1); secp256k1_fe_cmov(&q, &z, 1);
VERIFY_CHECK(!q.normalized && q.magnitude == z.magnitude);
CHECK(fe_memcmp(&q, &z) == 0); CHECK(fe_memcmp(&q, &z) == 0);
/* Test storage conversion and conditional moves. */
secp256k1_fe_normalize_var(&x); secp256k1_fe_normalize_var(&x);
secp256k1_fe_normalize_var(&z); secp256k1_fe_normalize_var(&z);
CHECK(!secp256k1_fe_equal_var(&x, &z)); CHECK(!secp256k1_fe_equal_var(&x, &z));
secp256k1_fe_normalize_var(&q);
secp256k1_fe_cmov(&q, &z, (i&1));
VERIFY_CHECK(q.normalized && q.magnitude == 1);
for (j = 0; j < 6; j++) {
secp256k1_fe_negate(&z, &z, j+1);
secp256k1_fe_normalize_var(&q);
secp256k1_fe_cmov(&q, &z, (j&1));
VERIFY_CHECK(!q.normalized && q.magnitude == (j+2));
}
secp256k1_fe_normalize_var(&z);
/* Test storage conversion and conditional moves. */
secp256k1_fe_to_storage(&xs, &x); secp256k1_fe_to_storage(&xs, &x);
secp256k1_fe_to_storage(&ys, &y); secp256k1_fe_to_storage(&ys, &y);
secp256k1_fe_to_storage(&zs, &z); secp256k1_fe_to_storage(&zs, &z);
@ -1671,7 +1681,7 @@ void test_ecdsa_end_to_end(void) {
extra[31] = 0; extra[31] = 0;
extra[0] = 1; extra[0] = 1;
CHECK(secp256k1_ecdsa_sign(ctx, message, signature4, &signaturelen4, privkey, NULL, extra) == 1); CHECK(secp256k1_ecdsa_sign(ctx, message, signature4, &signaturelen4, privkey, NULL, extra) == 1);
CHECK(signaturelen3 > 0); CHECK(signaturelen4 > 0);
CHECK((signaturelen != signaturelen2) || (memcmp(signature, signature2, signaturelen) != 0)); CHECK((signaturelen != signaturelen2) || (memcmp(signature, signature2, signaturelen) != 0));
CHECK((signaturelen != signaturelen3) || (memcmp(signature, signature3, signaturelen) != 0)); CHECK((signaturelen != signaturelen3) || (memcmp(signature, signature3, signaturelen) != 0));
CHECK((signaturelen3 != signaturelen2) || (memcmp(signature3, signature2, signaturelen3) != 0)); CHECK((signaturelen3 != signaturelen2) || (memcmp(signature3, signature2, signaturelen3) != 0));