MultiRegExScanner: Results are always bytes and never strings

volatility/framework/layers/scanners/__init__.py

@@ -53,7 +53,7 @@ class MultiStringScanner(layers.ScannerInterface):
             self._patterns.add_pattern(pattern)
         self._patterns.preprocess()
 
-    def __call__(self, data: bytes, data_offset: int) -> Generator[Tuple[int, Union[str, bytes]], None, None]:
+    def __call__(self, data: bytes, data_offset: int) -> Generator[Tuple[int, bytes], None, None]:
         """Runs through the data looking for the needles."""
         for offset, pattern in self._patterns.search(data):
             if offset < self.chunk_size:

volatility/framework/layers/scanners/multiregexp.py

@@ -21,8 +21,7 @@ class MultiRegexp(object):
             raise ValueError("No strings to compile into a regular expression")
         self._regex = re.compile(b'|'.join(map(re.escape, self._pattern_strings)))
 
-    def search(self, haystack: bytes) \
-            -> Generator[Tuple[int, Union[str, bytes]], None, None]:
+    def search(self, haystack: bytes) -> Generator[Tuple[int, bytes], None, None]:
         if not isinstance(haystack, bytes):
             raise TypeError("Search haystack must be a byte string")
         if not self._regex.pattern: