general cleanup

jrnl/Journal.py

@@ -79,7 +79,7 @@ class Journal:
         self.entries = list(frozenset(self.entries) | frozenset(imported_entries))
         self.sort()
 
-    def _get_encryption_method(self):
+    def _get_encryption_method(self) -> None:
         encryption_method = determine_encryption_method(self.config["encrypt"])
         self.encryption_method = encryption_method(self.name, self.config)
 
@@ -380,7 +380,7 @@ class Journal:
 
 class PlainJournal(Journal):
     def _load(self, filename):
-        with open(filename, "r") as f:
+        with open(filename, "r", encoding="utf-8") as f:
             return f.read()
 
     def _store(self, filename, text):

jrnl/encryption/BaseEncryption.py

@@ -39,7 +39,7 @@ class BaseEncryption(ABC):
         pass
 
     @abstractmethod
-    def _decrypt(self, text: bytes) -> str | None:
+    def _decrypt(self, text: bytes | str) -> str | None:
         """
         This is needed because self.decrypt might need
         to perform actions (e.g. prompt for password)

jrnl/encryption/BasePasswordEncryption.py

@@ -9,13 +9,13 @@ from jrnl.prompt import prompt_password
 class BasePasswordEncryption(BaseEncryption):
     _attempts: int
     _max_attempts: int
-    _password: str | None
+    _password: str
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self._attempts = 0
         self._max_attempts = 3
-        self._password = None
+        self._password = ""
 
         # Check keyring first for password.
         # That way we'll have it.
@@ -31,12 +31,12 @@ class BasePasswordEncryption(BaseEncryption):
         self._password = value
 
     def encrypt(self, text):
-        if self.password is None:
+        if not self.password:
             self.password = create_password(self._journal_name)
         return self._encrypt(text)
 
-    def decrypt(self, text: bytes) -> str:
-        if self.password is None:
+    def decrypt(self, text: str) -> str:
+        if not self.password:
             self._prompt_password()
         while (result := self._decrypt(text)) is None:
             self._prompt_password()

jrnl/encryption/Jrnlv2Encryption.py

@@ -12,12 +12,10 @@ from .BasePasswordEncryption import BasePasswordEncryption
 
 
 class Jrnlv2Encryption(BasePasswordEncryption):
-    _salt: bytes
-    _key: bytes
-
     def __init__(self, *args, **kwargs) -> None:
         # Salt is hard-coded
         self._salt: bytes = b"\xf2\xd5q\x0e\xc1\x8d.\xde\xdc\x8e6t\x89\x04\xce\xf8"
+        self._key: bytes = b""
 
         super().__init__(*args, **kwargs)
 
@@ -49,8 +47,12 @@ class Jrnlv2Encryption(BasePasswordEncryption):
             .decode(self._encoding)
         )
 
-    def _decrypt(self, text: bytes) -> str | None:
+    def _decrypt(self, text: str) -> str | None:
         try:
-            return Fernet(self._key).decrypt(text).decode(self._encoding)
+            return (
+                Fernet(self._key)
+                .decrypt(text.encode(self._encoding))
+                .decode(self._encoding)
+            )
         except (InvalidToken, IndexError):
             return None