crypto/ec/ecp_nistp256.c: use OPENSSL_zalloc instead of malloc+memset

Complements: b51bce942023 "Add and use OPENSSL_zalloc"
Signed-off-by: Eugene Syromiatnikov <esyr@openssl.org>
Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <ppzgs1@gmail.com>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28059)

diff --git a/crypto/ec/ecp_nistp256.c b/crypto/ec/ecp_nistp256.c
index eaf9dddbc8ec63ef9de5c92fdfb1fdf7e0b692f2..9c850f644f61d7fe2c39eb0a79ec04413e28392c 100644 (file)
--- a/crypto/ec/ecp_nistp256.c
+++ b/crypto/ec/ecp_nistp256.c
@@ -2088,8 +2088,8 @@ int ossl_ec_GFp_nistp256_points_mul(const EC_GROUP *group, EC_POINT *r,
              */
             mixed = 1;
         }
-        secrets = OPENSSL_malloc(sizeof(*secrets) * num_points);
-        pre_comp = OPENSSL_malloc(sizeof(*pre_comp) * num_points);
+        secrets = OPENSSL_zalloc(sizeof(*secrets) * num_points);
+        pre_comp = OPENSSL_zalloc(sizeof(*pre_comp) * num_points);
         if (mixed)
             tmp_smallfelems =
               OPENSSL_malloc(sizeof(*tmp_smallfelems) * (num_points * 17 + 1));
@@ -2101,8 +2101,6 @@ int ossl_ec_GFp_nistp256_points_mul(const EC_GROUP *group, EC_POINT *r,
          * we treat NULL scalars as 0, and NULL points as points at infinity,
          * i.e., they contribute nothing to the linear combination
          */
-        memset(secrets, 0, sizeof(*secrets) * num_points);
-        memset(pre_comp, 0, sizeof(*pre_comp) * num_points);
         for (i = 0; i < num_points; ++i) {
             if (i == num) {
                 /*