1#!/usr/bin/env python3
2# Copyright 2015 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
16"""Certificate chain where the target certificate contains an unknown X.509v3
17extension (OID=1.2.3.4) that is marked as critical."""
18
19import sys
20sys.path += ['../..']
21
22import gencerts
23
24# Self-signed root certificate.
25root = gencerts.create_self_signed_root_certificate('Root')
26
27# Intermediate certificate.
28intermediate = gencerts.create_intermediate_certificate('Intermediate', root)
29
30# Target certificate (has unknown critical extension).
31target = gencerts.create_end_entity_certificate('Target', intermediate)
32target.get_extensions().add_property('1.2.3.4',
33                                     'critical,DER:01:02:03:04')
34
35chain = [target, intermediate, root]
36gencerts.write_chain(__doc__, chain, 'chain.pem')
37
38gencerts.write_chain(__doc__, [target], 'target_only.pem')
39