Ticket #17944: ReadOnlyPasswordHashWidget.patch

django/contrib/auth/forms.py

@@ -28 +28 @@
 
         encoded = smart_str(encoded)
 
-        if len(encoded) == 32 and '$' not in encoded:
-            hasher = get_hasher('unsalted_md5')
+        try:
+            if len(encoded) == 32 and '$' not in encoded:
+                hasher = get_hasher('unsalted_md5')
+            else:
+                algorithm = encoded.split('$', 1)[0]
+                hasher = get_hasher(algorithm)
+        except ValueError,e:
+            summary = "<strong>%s</strong>" % ugettext('Unknown password hashing algorithm')
         else:
-            algorithm = encoded.split('$', 1)[0]
-            hasher = get_hasher(algorithm)
+            summary = ""
+            for key, value in hasher.safe_summary(encoded).iteritems():
+                summary += "<strong>%(key)s</strong>: %(value)s " % {"key": ugettext(key), "value": value}
 
-        summary = ""
-        for key, value in hasher.safe_summary(encoded).iteritems():
-            summary += "<strong>%(key)s</strong>: %(value)s " % {"key": ugettext(key), "value": value}
-
         return mark_safe("<div%(attrs)s>%(summary)s</div>" % {"attrs": flatatt(final_attrs), "summary": summary})