#!/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 intermediate has a smaller validity range than the other certificates, making it easy to violate just its validity. Root: 2015/01/01 -> 2016/01/01 Intermediate: 2015/03/01 -> 2015/09/01 Target: 2015/01/01 -> 2016/01/01 """ import sys sys.path += ['../..'] import gencerts # Self-signed root certificate. root = gencerts.create_self_signed_root_certificate('Root') root.set_validity_range(gencerts.JANUARY_1_2015_UTC, gencerts.JANUARY_1_2016_UTC) # Intermediate certificate. intermediate = gencerts.create_intermediate_certificate('Intermediate', root) intermediate.set_validity_range(gencerts.MARCH_1_2015_UTC, gencerts.SEPTEMBER_1_2015_UTC) # Target certificate. target = gencerts.create_end_entity_certificate('Target', intermediate) target.set_validity_range(gencerts.JANUARY_1_2015_UTC, gencerts.JANUARY_1_2016_UTC) chain = [target, intermediate, root] gencerts.write_chain(__doc__, chain, 'chain.pem')