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 where the leaf has a basic constraints extension with 6CA=true""" 7 8import sys 9sys.path += ['../..'] 10 11import gencerts 12 13# Self-signed root certificate. 14root = gencerts.create_self_signed_root_certificate('Root') 15 16# Intermediate certificate. 17intermediate = gencerts.create_intermediate_certificate('Intermediate', root) 18 19# Target certificate (end entity, but has pathlen set). 20target = gencerts.create_end_entity_certificate('Target', intermediate) 21target.get_extensions().set_property('basicConstraints', 'critical,CA:true') 22 23chain = [target, intermediate, root] 24gencerts.write_chain(__doc__, chain, 'chain.pem') 25gencerts.write_chain(__doc__, [target], 'target_only.pem') 26