draft-ietf-perc-dtls-tunnel-03.txt   draft-ietf-perc-dtls-tunnel-04.txt 
Network Working Group P. Jones Network Working Group P. Jones
Internet-Draft Cisco Systems Internet-Draft Cisco Systems
Intended status: Standards Track P. Ellenbogen Intended status: Standards Track P. Ellenbogen
Expires: October 26, 2018 Princeton University Expires: April 23, 2019 Princeton University
N. Ohlmeier N. Ohlmeier
Mozilla Mozilla
April 24, 2018 October 20, 2018
DTLS Tunnel between a Media Distributor and Key Distributor to DTLS Tunnel between a Media Distributor and Key Distributor to
Facilitate Key Exchange Facilitate Key Exchange
draft-ietf-perc-dtls-tunnel-03 draft-ietf-perc-dtls-tunnel-04
Abstract Abstract
This document defines a DTLS tunneling protocol for use in multimedia This document defines a DTLS tunneling protocol for use in multimedia
conferences that enables a Media Distributor to facilitate key conferences that enables a Media Distributor to facilitate key
exchange between an endpoint in a conference and the Key Distributor. exchange between an endpoint in a conference and the Key Distributor.
The protocol is designed to ensure that the keying material used for The protocol is designed to ensure that the keying material used for
hop-by-hop encryption and authentication is accessible to the media hop-by-hop encryption and authentication is accessible to the media
distributor, while the keying material used for end-to-end encryption distributor, while the keying material used for end-to-end encryption
and authentication is inaccessible to the media distributor. and authentication is inaccessible to the media distributor.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on October 26, 2018. This Internet-Draft will expire on April 23, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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4. Example Message Flows . . . . . . . . . . . . . . . . . . . . 4 4. Example Message Flows . . . . . . . . . . . . . . . . . . . . 4
5. Tunneling Procedures . . . . . . . . . . . . . . . . . . . . 6 5. Tunneling Procedures . . . . . . . . . . . . . . . . . . . . 6
5.1. Endpoint Procedures . . . . . . . . . . . . . . . . . . . 6 5.1. Endpoint Procedures . . . . . . . . . . . . . . . . . . . 6
5.2. Tunnel Establishment Procedures . . . . . . . . . . . . . 6 5.2. Tunnel Establishment Procedures . . . . . . . . . . . . . 6
5.3. Media Distributor Tunneling Procedures . . . . . . . . . 7 5.3. Media Distributor Tunneling Procedures . . . . . . . . . 7
5.4. Key Distributor Tunneling Procedures . . . . . . . . . . 8 5.4. Key Distributor Tunneling Procedures . . . . . . . . . . 8
5.5. Versioning Considerations . . . . . . . . . . . . . . . . 9 5.5. Versioning Considerations . . . . . . . . . . . . . . . . 9
6. Tunneling Protocol . . . . . . . . . . . . . . . . . . . . . 10 6. Tunneling Protocol . . . . . . . . . . . . . . . . . . . . . 10
6.1. Tunnel Message Format . . . . . . . . . . . . . . . . . . 10 6.1. Tunnel Message Format . . . . . . . . . . . . . . . . . . 10
7. Example Binary Encoding . . . . . . . . . . . . . . . . . . . 13 7. Example Binary Encoding . . . . . . . . . . . . . . . . . . . 13
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
9. Security Considerations . . . . . . . . . . . . . . . . . . . 14 9. Security Considerations . . . . . . . . . . . . . . . . . . . 14
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 14 10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 15
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 14 11. References . . . . . . . . . . . . . . . . . . . . . . . . . 15
11.1. Normative References . . . . . . . . . . . . . . . . . . 15 11.1. Normative References . . . . . . . . . . . . . . . . . . 15
11.2. Informative References . . . . . . . . . . . . . . . . . 16 11.2. Informative References . . . . . . . . . . . . . . . . . 16
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
1. Introduction 1. Introduction
An objective of Privacy-Enhanced RTP Conferencing (PERC) is to ensure An objective of Privacy-Enhanced RTP Conferencing (PERC) is to ensure
that endpoints in a multimedia conference have access to the end-to- that endpoints in a multimedia conference have access to the end-to-
end (E2E) and hop-by-hop (HBH) keying material used to encrypt and end (E2E) and hop-by-hop (HBH) keying material used to encrypt and
authenticate Real-time Transport Protocol (RTP) [RFC3550] packets, authenticate Real-time Transport Protocol (RTP) [RFC3550] packets,
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<https://www.rfc-editor.org/info/rfc5764>. <https://www.rfc-editor.org/info/rfc5764>.
[RFC6347] Rescorla, E. and N. Modadugu, "Datagram Transport Layer [RFC6347] Rescorla, E. and N. Modadugu, "Datagram Transport Layer
Security Version 1.2", RFC 6347, DOI 10.17487/RFC6347, Security Version 1.2", RFC 6347, DOI 10.17487/RFC6347,
January 2012, <https://www.rfc-editor.org/info/rfc6347>. January 2012, <https://www.rfc-editor.org/info/rfc6347>.
11.2. Informative References 11.2. Informative References
[I-D.ietf-perc-double] [I-D.ietf-perc-double]
Jennings, C., Jones, P., Barnes, R., and A. Roach, "SRTP Jennings, C., Jones, P., Barnes, R., and A. Roach, "SRTP
Double Encryption Procedures", draft-ietf-perc-double-08 Double Encryption Procedures", draft-ietf-perc-double-10
(work in progress), March 2018. (work in progress), October 2018.
[RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session
Description Protocol", RFC 4566, DOI 10.17487/RFC4566, Description Protocol", RFC 4566, DOI 10.17487/RFC4566,
July 2006, <https://www.rfc-editor.org/info/rfc4566>. July 2006, <https://www.rfc-editor.org/info/rfc4566>.
Authors' Addresses Authors' Addresses
Paul E. Jones Paul E. Jones
Cisco Systems, Inc. Cisco Systems, Inc.
7025 Kit Creek Rd. 7025 Kit Creek Rd.
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