diff options
| author | Billy Brumley <bbrumley@gmail.com> | 2018-07-08 00:27:34 +0200 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2018-07-16 11:17:40 +0200 |
| commit | 66b0bca887eb4ad1f5758e56c45905fb3fc36667 (patch) | |
| tree | 2d2158ad6d36ec9ae6a37b9be361492139a189ad /test/ectest.c | |
| parent | EC point multiplication: add `ladder` scaffold (diff) | |
| download | openssl-66b0bca887eb4ad1f5758e56c45905fb3fc36667.tar.xz openssl-66b0bca887eb4ad1f5758e56c45905fb3fc36667.zip | |
[test] test some important ladder corner cases
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)
Diffstat (limited to 'test/ectest.c')
| -rw-r--r-- | test/ectest.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/test/ectest.c b/test/ectest.c index ead23d7230..2945cd73b3 100644 --- a/test/ectest.c +++ b/test/ectest.c @@ -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)) |