use ruff for linting and import sorting

bumble/crypto/__init__.py

@@ -25,10 +25,11 @@ try:
     from bumble.crypto.cryptography import EccKey, aes_cmac, e
 except ImportError:
     logging.getLogger(__name__).debug(
-        "Unable to import cryptography, use built-in primitives."
+        "Unable to import cryptography, using built-in primitives."
     )
     from bumble.crypto.builtin import EccKey, aes_cmac, e  # type: ignore[assignment]
 
+_EccKey = EccKey  # For the linter only
 
 # -----------------------------------------------------------------------------
 # Logging

bumble/crypto/builtin.py

@@ -85,7 +85,6 @@ class _AES:
     # fmt: on
 
     def __init__(self, key: bytes) -> None:
-
         if len(key) not in (16, 24, 32):
             raise core.InvalidArgumentError(f'Invalid key size {len(key)}')
 
@@ -112,7 +111,6 @@ class _AES:
         r_con_pointer = 0
         t = kc
         while t < round_key_count:
-
             tt = tk[kc - 1]
             tk[0] ^= (
                 (self._S[(tt >> 16) & 0xFF] << 24)
@@ -269,7 +267,6 @@ class _ECB:
 
 
 class _CBC:
-
     def __init__(self, key: bytes, iv: bytes = bytes(16)) -> None:
         if len(iv) != 16:
             raise core.InvalidArgumentError(
@@ -302,7 +299,6 @@ class _CBC:
 
 
 class _CMAC:
-
     def __init__(
         self,
         key: bytes,
@@ -414,7 +410,6 @@ class _CMAC:
         self._last_pt = _xor(second_last, data_block[-bs:])
 
     def digest(self) -> bytes:
-
         bs = self._block_size
 
         if self._mac_tag is not None and not self._update_after_digest: