mbedtls/tests/scripts/generate_psa_tests.py
Gilles Peskine 0994049614 New framework for generating PSA test cases automatically
This commit creates a script to generate test cases automatically
based on enumerating PSA key types, algorithms and other
classifications of cryptographic mechanisms.

Subsequent commits will implement the generation of test cases.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-02-17 14:50:17 +01:00

71 lines
2.6 KiB
Python
Executable file

#!/usr/bin/env python3
"""Generate test data for PSA cryptographic mechanisms.
"""
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import sys
from typing import TypeVar
import scripts_path # pylint: disable=unused-import
from mbedtls_dev import macro_collector
T = TypeVar('T') #pylint: disable=invalid-name
class TestGenerator:
"""Gather information and generate test data."""
def __init__(self, options):
self.test_suite_directory = self.get_option(options, 'directory',
'tests/suites')
self.constructors = self.read_psa_interface()
@staticmethod
def get_option(options, name: str, default: T) -> T:
value = getattr(options, name, None)
return default if value is None else value
@staticmethod
def remove_unwanted_macros(
constructors: macro_collector.PSAMacroCollector
) -> None:
# Mbed TLS doesn't support DSA. Don't attempt to generate any related
# test case.
constructors.key_types.discard('PSA_KEY_TYPE_DSA_KEY_PAIR')
constructors.key_types.discard('PSA_KEY_TYPE_DSA_PUBLIC_KEY')
constructors.algorithms_from_hash.pop('PSA_ALG_DSA', None)
constructors.algorithms_from_hash.pop('PSA_ALG_DETERMINISTIC_DSA', None)
def read_psa_interface(self) -> macro_collector.PSAMacroCollector:
"""Return the list of known key types, algorithms, etc."""
constructors = macro_collector.PSAMacroCollector()
header_file_names = ['include/psa/crypto_values.h',
'include/psa/crypto_extra.h']
for header_file_name in header_file_names:
with open(header_file_name, 'rb') as header_file:
constructors.read_file(header_file)
self.remove_unwanted_macros(constructors)
return constructors
def main(args):
"""Command line entry point."""
parser = argparse.ArgumentParser(description=__doc__)
options = parser.parse_args(args)
generator = TestGenerator(options)
if __name__ == '__main__':
main(sys.argv[1:])