The Constrained Restful Environments (CoRE) Working Group defines a framework for a limited class of applications: those that deal with the manipulation of simple resources on constrained networks. As part of the framework for building these applications, the working group has defined a Constrained Application Protocol (CoAP) for the manipulation of Resources on a Device.

Our Internet-Draft describes a protocol for sending DNS messages over CoAP. These CoAP messages are protected by DTLS-Secured CoAP (CoAPS) or Object Security for Constrained RESTful Environments (OSCORE) to provide encrypted DNS message exchange for constrained devices in the Internet of Things (IoT).