1#!/usr/bin/env python
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 leaf certificate asserts the keyCertSign key
17usage, however does not have CA=true in the basic constraints extension to
18indicate it is a CA."""
19
20import sys
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 (end entity but has keyCertSign bit set).
32target = gencerts.create_end_entity_certificate('Target', intermediate)
33target.get_extensions().set_property('keyUsage',
34    'critical,digitalSignature,keyEncipherment,keyCertSign')
35
36chain = [target, intermediate, root]
37gencerts.write_chain(__doc__, chain, 'chain.pem')
38