Marco Tiloca, Rikard Hoeglund, 2022-07-11, Object Security for Constrained RESTful Environments (OSCORE) can be employed to secure CoAP messages stop-to-conclude between two endpoints at the application layer, also in the presence of intermediaries this kind of as proxies. Also, it defines how to safe a CoAP message by making use of a number of, nested OSCORE protections, e.g.