Datagram Transport Layer Security (DTLS) Protocol for Protection of Media Traffic Established with the Session Initiation Protocol
Jason Fischl · 2007
This document specifies how to use the Session Initiation Protocol (SIP) to establish secure media sessions using or over the Datagram Transport Layer Security (DTLS) protocol. It describes a mechanism of transporting a fingerprint attribute in the Session Description Protocol (SDP) that identifies the key that will be presented during the DTLS handshake. It relies on the SIP identity mechanism to ensure the integrity of the fingerprint attribute. This allows the establishment of media security along the media path.