refactor use numpy in user_cipher.py

src/user.py

@@ -10,20 +10,20 @@ from src.utils import xor_lists
 class User:
     username: str
     enciphered_passcode: EncipheredNKode
-    user_keys: UserCipher
+    cipher: UserCipher
     user_keypad: UserKeypad
     renew: bool = field(default=False)
 
-    def renew_keys(self, sets_xor: list[int], attrs_xor: list[int]):
+    def renew_keys(self, set_xor: list[int], prop_xor: list[int]):
         self.renew = True
-        self.user_keys.set_key = xor_lists(self.user_keys.set_key, sets_xor)
-        self.user_keys.prop_key = xor_lists(self.user_keys.prop_key, attrs_xor)
+        self.cipher.set_key = xor_lists(self.cipher.set_key, set_xor)
+        self.cipher.prop_key = xor_lists(self.cipher.prop_key, prop_xor)
 
     def refresh_passcode(self, passcode_attr_idx: list[int], customer_attributes: CustomerCipher):
-        self.user_keys = UserCipher.create(
+        self.cipher = UserCipher.create(
             customer_attributes.keypad_size,
             customer_attributes.set_key,
-            self.user_keys.max_nkode_len
+            self.cipher.max_nkode_len
         )
-        self.enciphered_passcode = self.user_keys.encipher_nkode(passcode_attr_idx, customer_attributes)
+        self.enciphered_passcode = self.cipher.encipher_nkode(passcode_attr_idx, customer_attributes)
         self.renew = False