GDOI Key Establishment for the SRTP Data Security Protocol
Cisco Systems
The Secure Real-time Transport Protocol (SRTP) secures unicast and multicast media streams. Multicast receivers of an SRTP stream therefore share an SRTP master key for multicast message authentication and decryption. This document describes how to establish a shared, "group key" for an SRTP session using RFC 3547, the Group Domain of Interpretation (GDOI) and RFC 2408, the Internet Security Association and Key Management Protocol. This document extends GDOI for SRTP group key establishment.