def delete_den(self):
        '''
        Delete all denied keys
        '''
        keys = self.list_keys()
        for status, keys in six.iteritems(self.list_keys()):
            for key in keys[self.DEN]:
                try:
                    os.remove(os.path.join(self.opts['pki_dir'], status, key))
                    eload = {'result': True,
                                 'act': 'delete',
                                 'id': key}
                    self.event.fire_event(eload, tagify(prefix='key'))
                except (__HOLE__, IOError):
                    pass
        self.check_minion_cache()
        return self.list_keys()
dataset/ETHPy150Open saltstack/salt/salt/key.py/Key.delete_den