def _get_raw_key(self, key_id):
if key_id in self.config.valid_key_ids:
return WrappingKey(
wrapping_algorithm=WrappingAlgorithm.
AES_256_GCM_IV12_TAG16_NO_PADDING,
wrapping_key=_EDK_MAP[key_id]["wrapping_key"],
wrapping_key_type=EncryptionKeyType.SYMMETRIC,
)
raise InvalidKeyIdError("Unknown key id")
def _new_master_key(self, key_id):
"""Returns self as master key instance.
:param bytes key_id: ID of key to return
:returns: self
:raises InvalidKeyIdError: if key_id is not ID for self
"""
if key_id != self.key_id:
raise InvalidKeyIdError(
"MasterKeys can only provide themselves. Requested {requested} but only {key} is available"
.format(requested=key_id, key=self.key_id))
return self
def _get_raw_key(self, key_id):
""""""
try:
algorithm, key_bits, padding_algorithm, padding_hash = key_id.upper(
).split('.', 3)
key_bits = int(key_bits)
key_type = _KEY_TYPES_MAP[algorithm]
wrapping_algorithm = _WRAPPING_ALGORITHM_MAP[algorithm][key_bits][
padding_algorithm][padding_hash]
static_key = _STATIC_KEYS[algorithm][key_bits]
return WrappingKey(wrapping_algorithm=wrapping_algorithm,
wrapping_key=static_key,
wrapping_key_type=key_type)
except KeyError:
_LOGGER.exception('Unknown Key ID: {}'.format(key_id))
raise InvalidKeyIdError('Unknown Key ID: {}'.format(key_id))
