1#!/usr/bin/env python3 2# Copyright 2023 The Chromium Authors 3# Use of this source code is governed by a BSD-style license that can be 4# found in the LICENSE file. 5"""Certificate chain of length 3 with requireExplicitPolicy=2 on the root, 6meaning an explicit policy should be required and the chain should fail to 7verify if the root constraints are enforced.""" 8 9import sys 10sys.path += ['../..'] 11 12import gencerts 13 14# Self-signed root certificate. 15root = gencerts.create_self_signed_root_certificate('Root') 16root.get_extensions().set_property('policyConstraints', 17 'critical,requireExplicitPolicy:2') 18 19# Intermediate certificate. 20intermediate = gencerts.create_intermediate_certificate('Intermediate', root) 21 22# Target certificate. 23target = gencerts.create_end_entity_certificate('Target', intermediate) 24 25chain = [target, intermediate, root] 26gencerts.write_chain(__doc__, chain, 'chain.pem') 27