Encrypted Key Transport for Secure RTP

The information below is for an old version of the document
Document Type Expired Internet-Draft (avtcore WG)
Last updated 2013-01-10 (latest revision 2012-07-09)
Replaces draft-ietf-avt-srtp-ekt
Stream IETF
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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, within SRTP or SRTCP. 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. These other key management protocols provide an EKT key to everyone in a session, and EKT coordinates the keys within the session.


David McGrew (mcgrew@cisco.com)
Dan Wing (dwing@cisco.com)
Kai Fischer (kai.fischer@siemens-enterprise.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)