RFC 5764 - DTLS Extension for SRTP

Network Working Group
D. McGrew, Cisco Systems
E. Rescorla, RTFM, Inc.
Category: Standards Track
Published: May 2010

Abstract

This document describes a Datagram Transport Layer Security (DTLS) extension to establish keys for Secure Real-time Transport Protocol (SRTP) and Secure Real-time Transport Control Protocol (SRTCP) flows. DTLS keying happens on the media path, independent of any out-of-band signaling channel present.

Contents

• 1. Introduction
• 2. Conventions Used In This Document
• 3. SRTP Extension for DTLS
  • 3.1. The use_srtp Extension
  • 3.2. Certificate Choice
  • 3.3. Key Derivation
  • 3.4. Key Scope
  • 3.5. Key Usage Limitations
• 4. Multi-Party RTP Sessions
• 5. Security Considerations
• 6. IANA Considerations
• 7. References
• Appendix A. Overview of DTLS
• Appendix B. Performance of Multiple DTLS Handshakes

Status of This Memo

This is an Internet Standards Track document.

This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc5764.

Copyright Notice

Copyright (c) 2010 IETF Trust and the persons identified as the document authors. All rights reserved.

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