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[test] test some important ladder corner cases

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and catch corner cases better and earlier

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6690)
This commit is contained in:
Billy Brumley 2018-07-08 01:27:34 +03:00 committed by Matt Caswell
parent 3712436071
commit 66b0bca887
1 changed files with 12 additions and 1 deletions
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13
test/ectest.c
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@ -31,6 +31,7 @@ static int group_order_tests(EC_GROUP *group)
{
BIGNUM *n1 = NULL, *n2 = NULL, *order = NULL;
EC_POINT *P = NULL, *Q = NULL, *R = NULL, *S = NULL;
const EC_POINT *G = NULL;
BN_CTX *ctx = NULL;
int i = 0, r = 0;
@ -38,6 +39,7 @@ static int group_order_tests(EC_GROUP *group)
|| !TEST_ptr(n2 = BN_new())
|| !TEST_ptr(order = BN_new())
|| !TEST_ptr(ctx = BN_CTX_new())
|| !TEST_ptr(G = EC_GROUP_get0_generator(group))
|| !TEST_ptr(P = EC_POINT_new(group))
|| !TEST_ptr(Q = EC_POINT_new(group))
|| !TEST_ptr(R = EC_POINT_new(group))
@ -49,7 +51,15 @@ static int group_order_tests(EC_GROUP *group)
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_GROUP_precompute_mult(group, ctx))
|| !TEST_true(EC_POINT_mul(group, Q, order, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q)))
|| !TEST_true(EC_POINT_is_at_infinity(group, Q))
|| !TEST_true(EC_POINT_copy(P, G))
|| !TEST_true(BN_one(n1))
|| !TEST_true(EC_POINT_mul(group, Q, n1, NULL, NULL, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx))
|| !TEST_true(BN_sub(n1, order, n1))
|| !TEST_true(EC_POINT_mul(group, Q, n1, NULL, NULL, ctx))
|| !TEST_true(EC_POINT_invert(group, Q, ctx))
|| !TEST_int_eq(0, EC_POINT_cmp(group, Q, P, ctx)))
goto err;
for (i = 1; i <= 2; i++) {
@ -62,6 +72,7 @@ static int group_order_tests(EC_GROUP *group)
* EC_GROUP_precompute_mult has set up precomputation.
*/
|| !TEST_true(EC_POINT_mul(group, P, n1, NULL, NULL, ctx))
|| (i == 1 && !TEST_int_eq(0, EC_POINT_cmp(group, P, G, ctx)))
|| !TEST_true(BN_one(n1))
/* n1 = 1 - order */
|| !TEST_true(BN_sub(n1, n1, order))