Can't compare with something that's not there.

Author: rohe

src/oidcmsg/oidc/__init__.py

@@ -740,7 +740,7 @@ def verify(self, **kwargs):
             if (_iat + _storage_time) < (_now - _skew):
                 raise IATError('Issued too long ago')
 
-        if 'nonce' in kwargs:
+        if 'nonce' in kwargs and 'nonce' in self:
             if kwargs['nonce'] != self['nonce']:
                 raise ValueError('Not the same nonce')