diff --git a/scripts/mbedtls_dev/bignum_mod.py b/scripts/mbedtls_dev/bignum_mod.py
new file mode 100644
index 0000000..3bed853
--- /dev/null
+++ b/scripts/mbedtls_dev/bignum_mod.py
@@ -0,0 +1,29 @@
+"""Framework classes for generation of bignum mod test cases."""
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import random
+
+from abc import ABCMeta
+from typing import Dict, Iterator, List, Tuple
+
+from . import test_data_generation
+from . import bignum_common
+
+class BignumCoreTarget(test_data_generation.BaseTarget, metaclass=ABCMeta):
+    #pylint: disable=abstract-method
+    """Target for bignum mod test case generation."""
+    target_basename = 'test_suite_bignum_mod.generated'
+