island: Create mongo key file securely before using it

monkey/monkey_island/cc/server_utils/encryptor.py

@@ -6,6 +6,8 @@ import os
 from Crypto import Random  # noqa: DUO133  # nosec: B413
 from Crypto.Cipher import AES  # noqa: DUO133  # nosec: B413
 
+from monkey_island.cc.environment.utils import create_secure_file
+
 __author__ = "itay.mizeretz"
 
 _encryptor = None
@@ -21,6 +23,7 @@ class Encryptor:
         if os.path.exists(password_file):
             self._load_existing_key(password_file)
         else:
+            create_secure_file(path=password_file)
             self._init_key(password_file)
 
     def _init_key(self, password_file):