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