| #!/usr/bin/env python3 |
| # Copyright 2022 The Chromium Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| """Certificate chain where the root keyUsage extension is present but does not |
| contain keyCertSign.""" |
| |
| import sys |
| sys.path += ['../..'] |
| |
| import gencerts |
| |
| # Self-signed root certificate without keyCertSign. |
| root = gencerts.create_self_signed_root_certificate('Root') |
| root.get_extensions().set_property('keyUsage', |
| 'critical,digitalSignature,keyEncipherment') |
| |
| # Intermediate certificate. |
| intermediate = gencerts.create_intermediate_certificate('Intermediate', root) |
| |
| # Target certificate. |
| target = gencerts.create_end_entity_certificate('Target', intermediate) |
| |
| chain = [target, intermediate, root] |
| gencerts.write_chain(__doc__, chain, 'chain.pem') |
