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Use string in dict instead of Expr object

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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
This commit is contained in:
gabor-mezei-arm 2021-06-28 16:54:11 +02:00
parent 4781263704
commit e84d321317
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GPG key ID: 106F5A41ECC305BD
2 changed files with 13 additions and 18 deletions
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12
scripts/mbedtls_dev/psa_storage.py
View file

@ -102,9 +102,9 @@ class Key:
"""The latest version of the storage format."""
IMPLICIT_USAGE_FLAGS = {
Expr('PSA_KEY_USAGE_SIGN_HASH'): Expr('PSA_KEY_USAGE_SIGN_MESSAGE'),
Expr('PSA_KEY_USAGE_VERIFY_HASH'): Expr('PSA_KEY_USAGE_VERIFY_MESSAGE')
} #type: Dict[Expr, Expr]
'PSA_KEY_USAGE_SIGN_HASH': 'PSA_KEY_USAGE_SIGN_MESSAGE',
'PSA_KEY_USAGE_VERIFY_HASH': 'PSA_KEY_USAGE_VERIFY_MESSAGE'
} #type: Dict[str, str]
"""Mapping of usage flags to the flags that they imply."""
IMPLICIT_USAGE_FLAGS_KEY_RESTRICTION = {
@ -138,10 +138,10 @@ class Key:
if usage_extension:
for flag, extension in self.IMPLICIT_USAGE_FLAGS.items():
if self.original_usage.value() & flag.value() and \
self.original_usage.value() & extension.value() == 0:
if self.original_usage.value() & Expr(flag).value() and \
self.original_usage.value() & Expr(extension).value() == 0:
self.updated_usage = Expr(self.updated_usage.string +
' | ' + extension.string)
' | ' + extension)
MAGIC = b'PSA\000KEY\000'

19
tests/scripts/generate_psa_tests.py
View file

@ -520,7 +520,7 @@ class StorageFormatV0(StorageFormat):
def keys_for_usage_extension(
self,
implyer_usage: psa_storage.Expr,
implyer_usage: str,
alg: str,
key_type: str,
params: Optional[Iterable[str]] = None
@ -532,13 +532,13 @@ class StorageFormatV0(StorageFormat):
keys = [] #type: List[StorageKey]
kt = crypto_knowledge.KeyType(key_type, params)
bits = kt.sizes_to_test()[0]
implicit = StorageKey.IMPLICIT_USAGE_FLAGS[implyer_usage]
implicit_usage = StorageKey.IMPLICIT_USAGE_FLAGS[implyer_usage]
usage_flags = 'PSA_KEY_USAGE_EXPORT'
material_usage_flags = usage_flags + ' | ' + implyer_usage.string
expected_usage_flags = material_usage_flags + ' | ' + implicit.string
material_usage_flags = usage_flags + ' | ' + implyer_usage
expected_usage_flags = material_usage_flags + ' | ' + implicit_usage
alg2 = 0
key_material = kt.key_material(bits)
usage_expression = re.sub(r'PSA_KEY_USAGE_', r'', implyer_usage.string)
usage_expression = re.sub(r'PSA_KEY_USAGE_', r'', implyer_usage)
alg_expression = re.sub(r'PSA_ALG_', r'', alg)
alg_expression = re.sub(r',', r', ', re.sub(r' +', r'', alg_expression))
key_type_expression = re.sub(r'\bPSA_(?:KEY_TYPE|ECC_FAMILY)_',
@ -617,18 +617,13 @@ class StorageFormatV0(StorageFormat):
alg_with_keys = self.gather_key_types_for_sign_alg()
key_filter = StorageKey.IMPLICIT_USAGE_FLAGS_KEY_RESTRICTION
# Use a lookup for the extendable usage flags to able to sort them
usage_lookup = {} #type: Dict[str, psa_storage.Expr]
for usage_flag in StorageKey.IMPLICIT_USAGE_FLAGS:
usage_lookup[usage_flag.string] = usage_flag
# Walk through all combintion. The key types must be filtered to fit
# the specific usage flag.
keys += [key
for usage in sorted(usage_lookup)
for usage in sorted(StorageKey.IMPLICIT_USAGE_FLAGS, key=str)
for alg in sorted(alg_with_keys)
for key_type in sorted(alg_with_keys[alg]) if re.match(key_filter[usage], key_type)
for key in self.keys_for_usage_extension(usage_lookup[usage], alg, key_type)]
for key in self.keys_for_usage_extension(usage, alg, key_type)]
self.key_builder = prev_builder
return keys