1 files changed, 31 insertions, 3 deletions

diff --git a/src/crypto/ec/oct.c b/src/crypto/ec/oct.c
index 365dc3d..cb50e17 100644
--- a/src/crypto/ec/oct.c
+++ b/src/crypto/ec/oct.c
@@ -277,21 +277,39 @@ err:
 
 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point,
                        const uint8_t *buf, size_t len, BN_CTX *ctx) {
+  if (group->meth->oct2point == 0 &&
+      !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
   if (group->meth != point->meth) {
     OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
     return 0;
   }
-  return ec_GFp_simple_oct2point(group, point, buf, len, ctx);
+  if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) {
+    return ec_GFp_simple_oct2point(group, point, buf, len, ctx);
+  }
+
+  return group->meth->oct2point(group, point, buf, len, ctx);
 }
 
 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point,
                           point_conversion_form_t form, uint8_t *buf,
                           size_t len, BN_CTX *ctx) {
+  if (group->meth->point2oct == 0 &&
+      !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
   if (group->meth != point->meth) {
     OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
     return 0;
   }
-  return ec_GFp_simple_point2oct(group, point, form, buf, len, ctx);
+  if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) {
+    return ec_GFp_simple_point2oct(group, point, form, buf, len, ctx);
+  }
+
+  return group->meth->point2oct(group, point, form, buf, len, ctx);
 }
 
 int ec_GFp_simple_set_compressed_coordinates(const EC_GROUP *group,
@@ -434,9 +452,19 @@ err:
 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
                                             EC_POINT *point, const BIGNUM *x,
                                             int y_bit, BN_CTX *ctx) {
+  if (group->meth->point_set_compressed_coordinates == 0 &&
+      !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
+    OPENSSL_PUT_ERROR(EC, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+    return 0;
+  }
   if (group->meth != point->meth) {
     OPENSSL_PUT_ERROR(EC, EC_R_INCOMPATIBLE_OBJECTS);
     return 0;
   }
-  return ec_GFp_simple_set_compressed_coordinates(group, point, x, y_bit, ctx);
+  if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) {
+    return ec_GFp_simple_set_compressed_coordinates(group, point, x, y_bit,
+                                                    ctx);
+  }
+  return group->meth->point_set_compressed_coordinates(group, point, x, y_bit,
+                                                       ctx);
 }