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Security Descriptions Extension for Media Streams

Document type: Expired Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2012-09-27 (latest revision 2012-03-26)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: Expired
Responsible AD: (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


This document provides an extension to the cryptographic attribute (RFC 4568) defined for Session Description Protocol (RFC 4566) to enhance end-to-end communication security, so that some scenarios, e.g., forking and re-targeting can especially benefit from the extension. The usage of the provided extension in Secure Real-time Transport Protocol (SRTP, RFC3711) is also defined in this document.


Sujing Zhou <>
Tian Tian <>

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