Merge pull request #557 from luyuqing/encode_fix

Encoded unicode objects before hashing

Author: c00kiemon5ter

example/idp2/idp.py

@@ -371,7 +371,7 @@ def do(self, query, binding_in, relay_state="", encrypt_cert=None,
     @staticmethod
     def _store_request(saml_msg):
         logger.debug("_store_request: %s", saml_msg)
-        key = sha1(saml_msg["SAMLRequest"]).hexdigest()
+        key = sha1(saml_msg["SAMLRequest"].encode()).hexdigest()
         # store the AuthnRequest
         IDP.ticket[key] = saml_msg
         return key