This document specifies the Key Delivery Message bundle (KDMb). The KDMb is designed to deliver a set of Key Delivery Messages [KDM] from a D-Cinema content processing center to a consumer or redistributors of KDM elements (e.g., from post production to distribution, or from distribution to exhibition). The KDMb can represent an entire theatre, circuit or other grouping of recipients. The KDMb is ...