fix error messages

[sfa.git] / sfa / trust / credential.py

diff --git a/sfa/trust/credential.py b/sfa/trust/credential.py
index d9d3972..cdc632a 100644 (file)
--- a/sfa/trust/credential.py
+++ b/sfa/trust/credential.py
@@ -696,6 +696,12 @@ class Credential(object):
     def decode(self):
         if not self.xml:
             return
+
+        doc = None
+        try:
+            doc = parseString(self.xml)
+        except ExpatError,e:
+            raise CredentialNotVerifiable("Malformed credential")
         doc = parseString(self.xml)
         sigs = []
         signed_cred = doc.getElementsByTagName("signed-credential")