Code to generate storage format test cases

Start generating storage format test cases. This commit introduces two test
data files: test_suite_psa_crypto_storage_format.v0.data for reading keys in
storage format version 0 (the current version at this time), and
test_suite_psa_crypto_storage_format.current.data for saving keys in the
current format (version 0 at this time).

This commit kicks off the test case generation with test cases to exercise
the encoding of usage flags. Subsequent commits will cover other aspects of
keys.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-03-10 15:03:44 +01:00
parent 2352396808
commit 897dff9527
3 changed files with 197 additions and 0 deletions

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@ -29,6 +29,7 @@ from typing import Callable, Dict, FrozenSet, Iterable, Iterator, List, Optional
import scripts_path # pylint: disable=unused-import
from mbedtls_dev import crypto_knowledge
from mbedtls_dev import macro_collector
from mbedtls_dev import psa_storage
from mbedtls_dev import test_case
T = TypeVar('T') #pylint: disable=invalid-name
@ -195,6 +196,96 @@ class NotSupported:
kt, 0, param_descr='curve')
class StorageKey(psa_storage.Key):
"""Representation of a key for storage format testing."""
def __init__(self, *, description: str, **kwargs) -> None:
super().__init__(**kwargs)
self.description = description #type: str
class StorageFormat:
"""Storage format stability test cases."""
def __init__(self, info: Information, version: int, forward: bool) -> None:
"""Prepare to generate test cases for storage format stability.
* `info`: information about the API. See the `Information` class.
* `version`: the storage format version to generate test cases for.
* `forward`: if true, generate forward compatibility test cases which
save a key and check that its representation is as intended. Otherwise
generate backward compatibility test cases which inject a key
representation and check that it can be read and used.
"""
self.constructors = info.constructors
self.version = version
self.forward = forward
def make_test_case(self, key: StorageKey) -> test_case.TestCase:
"""Construct a storage format test case for the given key.
If ``forward`` is true, generate a forward compatibility test case:
create a key and validate that it has the expected representation.
Otherwise generate a backward compatibility test case: inject the
key representation into storage and validate that it can be read
correctly.
"""
verb = 'save' if self.forward else 'read'
tc = test_case.TestCase()
tc.set_description('PSA storage {}: {}'.format(verb, key.description))
tc.set_function('key_storage_' + verb)
if self.forward:
extra_arguments = []
else:
# Some test keys have the RAW_DATA type and attributes that don't
# necessarily make sense. We do this to validate numerical
# encodings of the attributes.
# Raw data keys have no useful exercise anyway so there is no
# loss of test coverage.
exercise = key.type.string != 'PSA_KEY_TYPE_RAW_DATA'
extra_arguments = ['1' if exercise else '0']
tc.set_arguments([key.lifetime.string,
key.type.string, str(key.bits),
key.usage.string, key.alg.string, key.alg2.string,
'"' + key.material.hex() + '"',
'"' + key.hex() + '"',
*extra_arguments])
return tc
def key_for_usage_flags(
self,
usage_flags: List[str],
short: Optional[str] = None
) -> StorageKey:
"""Construct a test key for the given key usage."""
usage = ' | '.join(usage_flags) if usage_flags else '0'
if short is None:
short = re.sub(r'\bPSA_KEY_USAGE_', r'', usage)
description = 'usage: ' + short
key = StorageKey(version=self.version,
id=1, lifetime=0x00000001,
type='PSA_KEY_TYPE_RAW_DATA', bits=8,
usage=usage, alg=0, alg2=0,
material=b'K',
description=description)
return key
def all_keys_for_usage_flags(self) -> Iterator[StorageKey]:
"""Generate test keys covering usage flags."""
known_flags = sorted(self.constructors.key_usage_flags)
yield self.key_for_usage_flags(['0'])
for usage_flag in known_flags:
yield self.key_for_usage_flags([usage_flag])
for flag1, flag2 in zip(known_flags,
known_flags[1:] + [known_flags[0]]):
yield self.key_for_usage_flags([flag1, flag2])
yield self.key_for_usage_flags(known_flags, short='all known')
def all_test_cases(self) -> Iterator[test_case.TestCase]:
"""Generate all storage format test cases."""
for key in self.all_keys_for_usage_flags():
yield self.make_test_case(key)
class TestGenerator:
"""Generate test data."""
@ -224,6 +315,10 @@ class TestGenerator:
TARGETS = {
'test_suite_psa_crypto_not_supported.generated':
lambda info: NotSupported(info).test_cases_for_not_supported(),
'test_suite_psa_crypto_storage_format.current':
lambda info: StorageFormat(info, 0, True).all_test_cases(),
'test_suite_psa_crypto_storage_format.v0':
lambda info: StorageFormat(info, 0, False).all_test_cases(),
} #type: Dict[str, Callable[[Information], Iterable[test_case.TestCase]]]
def generate_target(self, name: str) -> None:

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@ -0,0 +1,51 @@
# Automatically generated by generate_psa_tests.py. Do not edit!
PSA storage save: usage: 0
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:0:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800000000000000000000000000010000004b"
PSA storage save: usage: COPY
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_COPY:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800020000000000000000000000010000004b"
PSA storage save: usage: DECRYPT
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DECRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800000200000000000000000000010000004b"
PSA storage save: usage: DERIVE
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DERIVE:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800004000000000000000000000010000004b"
PSA storage save: usage: ENCRYPT
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_ENCRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800000100000000000000000000010000004b"
PSA storage save: usage: EXPORT
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_EXPORT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800010000000000000000000000010000004b"
PSA storage save: usage: SIGN_HASH
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_SIGN_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800001000000000000000000000010000004b"
PSA storage save: usage: VERIFY_HASH
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_VERIFY_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800002000000000000000000000010000004b"
PSA storage save: usage: COPY | DECRYPT
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800020200000000000000000000010000004b"
PSA storage save: usage: DECRYPT | DERIVE
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_DERIVE:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800004200000000000000000000010000004b"
PSA storage save: usage: DERIVE | ENCRYPT
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_ENCRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800004100000000000000000000010000004b"
PSA storage save: usage: ENCRYPT | EXPORT
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800010100000000000000000000010000004b"
PSA storage save: usage: EXPORT | SIGN_HASH
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800011000000000000000000000010000004b"
PSA storage save: usage: SIGN_HASH | VERIFY_HASH
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800003000000000000000000000010000004b"
PSA storage save: usage: VERIFY_HASH | COPY
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_COPY:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800022000000000000000000000010000004b"
PSA storage save: usage: all known
key_storage_save:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800037300000000000000000000010000004b"
# End of automatically generated file.

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@ -0,0 +1,51 @@
# Automatically generated by generate_psa_tests.py. Do not edit!
PSA storage read: usage: 0
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:0:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800000000000000000000000000010000004b":0
PSA storage read: usage: COPY
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_COPY:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800020000000000000000000000010000004b":0
PSA storage read: usage: DECRYPT
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DECRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800000200000000000000000000010000004b":0
PSA storage read: usage: DERIVE
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DERIVE:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800004000000000000000000000010000004b":0
PSA storage read: usage: ENCRYPT
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_ENCRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800000100000000000000000000010000004b":0
PSA storage read: usage: EXPORT
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_EXPORT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800010000000000000000000000010000004b":0
PSA storage read: usage: SIGN_HASH
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_SIGN_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800001000000000000000000000010000004b":0
PSA storage read: usage: VERIFY_HASH
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_VERIFY_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800002000000000000000000000010000004b":0
PSA storage read: usage: COPY | DECRYPT
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800020200000000000000000000010000004b":0
PSA storage read: usage: DECRYPT | DERIVE
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_DERIVE:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800004200000000000000000000010000004b":0
PSA storage read: usage: DERIVE | ENCRYPT
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_ENCRYPT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800004100000000000000000000010000004b":0
PSA storage read: usage: ENCRYPT | EXPORT
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800010100000000000000000000010000004b":0
PSA storage read: usage: EXPORT | SIGN_HASH
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800011000000000000000000000010000004b":0
PSA storage read: usage: SIGN_HASH | VERIFY_HASH
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800003000000000000000000000010000004b":0
PSA storage read: usage: VERIFY_HASH | COPY
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_COPY:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800022000000000000000000000010000004b":0
PSA storage read: usage: all known
key_storage_read:0x0001:PSA_KEY_TYPE_RAW_DATA:8:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:0x0000:0x0000:"4b":"505341004b455900000000000100000001100800037300000000000000000000010000004b":0
# End of automatically generated file.