1#!/usr/bin/env python3
2# Copyright 2023 The Chromium Authors
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#     https://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15"""Certificate chain where the target certificate contains an
16MSApplicationPolicies extension that is marked as critical and
17also contains an extendedKeyUsage extension."""
18
19import sys
20
21sys.path += ['../..']
22
23import gencerts
24
25# Self-signed root certificate.
26root = gencerts.create_self_signed_root_certificate('Root')
27
28# Intermediate certificate.
29intermediate = gencerts.create_intermediate_certificate('Intermediate', root)
30
31# Target certificate (has unknown critical extension).
32target = gencerts.create_end_entity_certificate('Target', intermediate)
33target.get_extensions().add_property('1.3.6.1.4.1.311.21.10',
34                                     'critical,DER:01:02:03:04')
35target.get_extensions().set_property('extendedKeyUsage', 'serverAuth')
36
37chain = [target, intermediate, root]
38gencerts.write_chain(__doc__, chain, 'chain.pem')
39