Spelling error. Added and extra parameter check.

1 files changed, 7 insertions, 2 deletions

diff --git a/example/idp2/idp.py b/example/idp2/idp.py
index 08c0e0c0..5d2a46ed 100755
--- a/example/idp2/idp.py
+++ b/example/idp2/idp.py
@@ -132,8 +132,13 @@ class Service(object):
         else:
             # saml_msg may also contain Signature and SigAlg
             if "Signature" in saml_msg:
-                kwargs = {"signature": saml_msg["signature"],
-                        "sigalg": saml_msg["SigAlg"]}
+                try:
+                    kwargs = {"signature": saml_msg["Signature"],
+                              "sigalg": saml_msg["SigAlg"]}
+                except KeyError:
+                    resp = BadRequest(
+                        'Signature Algorithm specification is missing')
+                    return resp(self.environ, self.start_response)
             else:
                 kwargs = {}
             try: