Privacy Preference Declaration Protocol Specification

This document specifies a participant-facing protocol for Privacy Preference Declarations (PPDs) in home networks. The protocol is between a home-side PPD service endpoint and a device-side actor, formally the PPD participant, which is a device or a service acting on behalf of a device. It defines baseline operations for endpoint metadata confirmation, participant registration, optional participant declaration, effective-policy retrieval, policy acknowledgment, renewal, and reassociation. This document complements the PPD architecture and taxonomy documents by defining the message and sequencing behavior needed for interoperable policy signaling.