Island: Move EncryptionKey32Bytes to its own file

monkey/monkey_island/cc/server_utils/encryption/__init__.py

@@ -14,3 +14,4 @@ from .data_store_encryptor import (
     unlock_datastore_encryptor,
     reset_datastore_encryptor,
 )
+from .encryption_key_types import EncryptionKey32Bytes

monkey/monkey_island/cc/server_utils/encryption/encryption_key_types.py

@@ -0,0 +1,14 @@
+class SizeError(Exception):
+    """
+    Raised when an argument is not of the expected size during object creation.
+    """
+
+    pass
+
+
+class EncryptionKey32Bytes(bytes):
+    def __init__(self, key: bytes):
+        if len(key) == 32:
+            self.key = key
+        else:
+            raise SizeError("Key size should be 32 bytes.")

monkey/monkey_island/cc/server_utils/encryption/key_based_encryptor.py

@@ -15,22 +15,6 @@ logger = logging.getLogger(__name__)
 # Note: password != key
 
 
-class SizeError(Exception):
-    """
-    Raised when an argument is not of the expected size during object creation.
-    """
-
-    pass
-
-
-class EncryptionKey32Bit(bytes):
-    def __init__(self, key: bytes):
-        if len(key) == 32:
-            self.key = key
-        else:
-            raise SizeError("Key size should be 32 bytes.")
-
-
 class KeyBasedEncryptor(IEncryptor):
     def __init__(self, key: bytes):
         """