Fix nasty BitString decode bug

[pyderasn.git] / pyderasn.py

diff --git a/pyderasn.py b/pyderasn.py
index bf0e4857a63d40a0940a01983f1f8b4a4b5eea36..885f816b2097c93589d9cc2e44af0cc2c5ac5961 100755 (executable)
--- a/pyderasn.py
+++ b/pyderasn.py
@@ -289,7 +289,7 @@ Following types can be automatically decoded (DEFINED BY):
 * :py:class:`pyderasn.BitString` (that is multiple of 8 bits)
 * :py:class:`pyderasn.OctetString`
 * :py:class:`pyderasn.SequenceOf`/:py:class:`pyderasn.SetOf`
-  ``Any``/``OctetString``-s
+  ``Any``/``BitString``/``OctetString``-s
 
 When any of those fields is automatically decoded, then ``.defined``
 attribute contains ``(OID, value)`` tuple. ``OID`` tells by which OID it
@@ -2014,7 +2014,7 @@ class BitString(Obj):
                 decode_path=decode_path,
                 offset=offset,
             )
-        if byte2int(v[-1:]) & ((1 << pad_size) - 1) != 0:
+        if byte2int(v[l - 1:l]) & ((1 << pad_size) - 1) != 0:
             raise DecodeError(
                 "invalid pad",
                 klass=self.__class__,