ec/ecp_nistp*.c: fix SEGVs.

[oweals/openssl.git] / crypto / ec / ecp_nistp521.c

diff --git a/crypto/ec/ecp_nistp521.c b/crypto/ec/ecp_nistp521.c
index 360b9a3516f61106460d906c42fabef932740379..8d2c74adeeff9b03dee9f6d214ba02b3d2867e1b 100644 (file)
--- a/crypto/ec/ecp_nistp521.c
+++ b/crypto/ec/ecp_nistp521.c
@@ -1743,8 +1743,8 @@ int ec_GFp_nistp521_point_get_affine_coordinates(const EC_GROUP *group,
               EC_R_POINT_AT_INFINITY);
         return 0;
     }
-    if ((!BN_to_felem(x_in, &point->X)) || (!BN_to_felem(y_in, &point->Y)) ||
-        (!BN_to_felem(z1, &point->Z)))
+    if ((!BN_to_felem(x_in, point->X)) || (!BN_to_felem(y_in, point->Y)) ||
+        (!BN_to_felem(z1, point->Z)))
         return 0;
     felem_inv(z2, z1);
     felem_square(tmp, z2);
@@ -1928,7 +1928,7 @@ int ec_GFp_nistp521_points_mul(const EC_GROUP *group, EC_POINT *r,
                      * this is an unusual input, and we don't guarantee
                      * constant-timeness
                      */
-                    if (!BN_nnmod(tmp_scalar, p_scalar, &group->order, ctx)) {
+                    if (!BN_nnmod(tmp_scalar, p_scalar, group->order, ctx)) {
                         ECerr(EC_F_EC_GFP_NISTP521_POINTS_MUL, ERR_R_BN_LIB);
                         goto err;
                     }
@@ -1937,9 +1937,9 @@ int ec_GFp_nistp521_points_mul(const EC_GROUP *group, EC_POINT *r,
                     num_bytes = BN_bn2bin(p_scalar, tmp);
                 flip_endian(secrets[i], tmp, num_bytes);
                 /* precompute multiples */
-                if ((!BN_to_felem(x_out, &p->X)) ||
-                    (!BN_to_felem(y_out, &p->Y)) ||
-                    (!BN_to_felem(z_out, &p->Z)))
+                if ((!BN_to_felem(x_out, p->X)) ||
+                    (!BN_to_felem(y_out, p->Y)) ||
+                    (!BN_to_felem(z_out, p->Z)))
                     goto err;
                 memcpy(pre_comp[i][1][0], x_out, sizeof(felem));
                 memcpy(pre_comp[i][1][1], y_out, sizeof(felem));
@@ -1974,7 +1974,7 @@ int ec_GFp_nistp521_points_mul(const EC_GROUP *group, EC_POINT *r,
              * this is an unusual input, and we don't guarantee
              * constant-timeness
              */
-            if (!BN_nnmod(tmp_scalar, scalar, &group->order, ctx)) {
+            if (!BN_nnmod(tmp_scalar, scalar, group->order, ctx)) {
                 ECerr(EC_F_EC_GFP_NISTP521_POINTS_MUL, ERR_R_BN_LIB);
                 goto err;
             }
@@ -2006,8 +2006,7 @@ int ec_GFp_nistp521_points_mul(const EC_GROUP *group, EC_POINT *r,
 
  err:
     BN_CTX_end(ctx);
-    if (generator != NULL)
-        EC_POINT_free(generator);
+    EC_POINT_free(generator);
     if (new_ctx != NULL)
         BN_CTX_free(new_ctx);
     if (secrets != NULL)
@@ -2059,9 +2058,9 @@ int ec_GFp_nistp521_precompute_mult(EC_GROUP *group, BN_CTX *ctx)
         ret = 1;
         goto err;
     }
-    if ((!BN_to_felem(pre->g_pre_comp[1][0], &group->generator->X)) ||
-        (!BN_to_felem(pre->g_pre_comp[1][1], &group->generator->Y)) ||
-        (!BN_to_felem(pre->g_pre_comp[1][2], &group->generator->Z)))
+    if ((!BN_to_felem(pre->g_pre_comp[1][0], group->generator->X)) ||
+        (!BN_to_felem(pre->g_pre_comp[1][1], group->generator->Y)) ||
+        (!BN_to_felem(pre->g_pre_comp[1][2], group->generator->Z)))
         goto err;
     /* compute 2^130*G, 2^260*G, 2^390*G */
     for (i = 1; i <= 4; i <<= 1) {
@@ -2123,12 +2122,10 @@ int ec_GFp_nistp521_precompute_mult(EC_GROUP *group, BN_CTX *ctx)
     pre = NULL;
  err:
     BN_CTX_end(ctx);
-    if (generator != NULL)
-        EC_POINT_free(generator);
+    EC_POINT_free(generator);
     if (new_ctx != NULL)
         BN_CTX_free(new_ctx);
-    if (pre)
-        nistp521_pre_comp_free(pre);
+    nistp521_pre_comp_free(pre);
     return ret;
 }