Security is a real concern for the Document Store. In an optimal situation, security would have to take into account the possibility of each component within any given Store to be provided by a different authority and therefore subject to limited or zero trust. In this situation the link between the objects must be trust-able (= encrypted). To accomplish both of these aims, various things need to be included, from authentication to verifications between each object about the data sent and received. FIXME: expand this area