CDNI Client Access Control Metadata

This specification adds to the basic client access control metadata in RFC8006, providing content providers and upstream content delivery networks (uCDNs) extended capabilities in defining location and time window restrictions. Support is also provided to define required Transport Layer Security (TLS) certificates and encryption levels. The specification also defines configuration metadata for the Common Access Token (CAT), developed jointly by the Streaming Video Technology Alliance (SVTA) and Consumer Technology Association Web Application Video Ecosystem (CTA-WAVE).