| #!/usr/bin/env python |
| # Copyright 2015 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 leaf certificate asserts the keyCertSign key |
| usage, however does not have CA=true in the basic constraints extension to |
| indicate it is a CA.""" |
| |
| import sys |
| sys.path += ['../..'] |
| |
| import gencerts |
| |
| # Self-signed root certificate. |
| root = gencerts.create_self_signed_root_certificate('Root') |
| |
| # Intermediate certificate. |
| intermediate = gencerts.create_intermediate_certificate('Intermediate', root) |
| |
| # Target certificate (end entity but has keyCertSign bit set). |
| target = gencerts.create_end_entity_certificate('Target', intermediate) |
| target.get_extensions().set_property('keyUsage', |
| 'critical,digitalSignature,keyEncipherment,keyCertSign') |
| |
| chain = [target, intermediate, root] |
| gencerts.write_chain(__doc__, chain, 'chain.pem') |
