1#!/usr/bin/env python 2# Copyright 2015 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 6"""Certificate chain where the intermediate sets pathlen=0, and is followed by 7a self-issued intermediate.""" 8 9import sys 10sys.path += ['../..'] 11 12import gencerts 13 14# Self-signed root certificate. 15root = gencerts.create_self_signed_root_certificate('Root') 16 17# Intermediate with pathlen 0 18intermediate1 = gencerts.create_intermediate_certificate('Intermediate', root) 19intermediate1.get_extensions().set_property('basicConstraints', 20 'critical,CA:true,pathlen:0') 21 22# Another intermediate (with the same pathlen restriction). 23# Note that this is self-issued but NOT self-signed. 24intermediate2 = gencerts.create_intermediate_certificate('Intermediate', 25 intermediate1) 26intermediate2.get_extensions().set_property('basicConstraints', 27 'critical,CA:true,pathlen:0') 28 29# Target certificate. 30target = gencerts.create_end_entity_certificate('Target', intermediate2) 31 32chain = [target, intermediate2, intermediate1, root] 33gencerts.write_chain(__doc__, chain, 'chain.pem') 34