1 files changed, 28 insertions, 0 deletions
diff --git a/pyasn1/error.py b/pyasn1/error.py
index 7f606bb..fb23f1d 100644
--- a/pyasn1/error.py
+++ b/pyasn1/error.py
@@ -13,6 +13,34 @@ class PyAsn1Error(Exception):
     """
 
 
+class PyAsn1StringError(PyAsn1Error, UnicodeError):
+    """Create pyasn1 exception object
+
+    The `PyAsn1StringError` exception is a base class for errors relating to
+    string encoding/decoding and other related problems
+    """
+    def __init__(self, message, unicode_error=None):
+        if isinstance(unicode_error, UnicodeError):
+            UnicodeError.__init__(self, *unicode_error.args)
+        PyAsn1Error.__init__(self, message)
+
+
+class PyAsn1StringDecodeError(PyAsn1StringError, UnicodeDecodeError):
+    """Create pyasn1 exception object
+
+    The `PyAsn1StringDecodeError` exception represents a failure to decode
+    underlying bytes values to a string
+    """
+
+
+class PyAsn1StringEncodeError(PyAsn1StringError, UnicodeEncodeError):
+    """Create pyasn1 exception object
+
+    The `PyAsn1StringEncodeError` exception represents a failure to encode
+    underlying string value as bytes
+    """
+
+
 class ValueConstraintError(PyAsn1Error):
     """Create pyasn1 exception object