Security Descriptions Extension for Media Streams

Document Type Expired Internet-Draft (individual)
Last updated 2012-09-27 (latest revision 2012-03-26)
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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 (

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