Ericsson F. Andreasen F. Andreasen Encrypted Key Transport (EKT) is an extension to Secure Real-time Transport Protocol (SRTP) that provides for the secure transport of SRTP master keys, Rollover Counters, and other information. This facility enables SRTP to work for decentralized conferences with minimal control. This note defines EKT, and also describes how to use it with SDP Security Descriptions, DTLS-SRTP, and MIKEY. With EKT, these other key management protocols provide an EKT key to everyone in a session, and EKT coordinates the SRTP keys within the session.