Connection Identifiers for DTLS 1.2
draft-ietf-tls-dtls-connection-id-07

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01
• 02
• 03
• 04
• 05
• 06
• 07

TLS                                                     E. Rescorla, Ed.
Internet-Draft                                                RTFM, Inc.
Updates: 6347 (if approved)                           H. Tschofenig, Ed.
Intended status: Standards Track                              T. Fossati
Expires: April 23, 2020                                      Arm Limited
                                                        October 21, 2019

                  Connection Identifiers for DTLS 1.2
                  draft-ietf-tls-dtls-connection-id-07

Abstract

   This document specifies the Connection ID (CID) construct for the
   Datagram Transport Layer Security (DTLS) protocol version 1.2.

   A CID is an identifier carried in the record layer header that gives
   the recipient additional information for selecting the appropriate
   security association.  In "classical" DTLS, selecting a security
   association of an incoming DTLS record is accomplished with the help
   of the 5-tuple.  If the source IP address and/or source port changes
   during the lifetime of an ongoing DTLS session then the receiver will
   be unable to locate the correct security context.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 23, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

Rescorla, et al.         Expires April 23, 2020                 [Page 1]
Internet-Draft           DTLS 1.2 Connection ID             October 2019

   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   3
   3.  The "connection_id" Extension . . . . . . . . . . . . . . . .   3
   4.  Record Layer Extensions . . . . . . . . . . . . . . . . . . .   5
   5.  Record Payload Protection . . . . . . . . . . . . . . . . . .   7
     5.1.  Block Ciphers . . . . . . . . . . . . . . . . . . . . . .   7
     5.2.  Block Ciphers with Encrypt-then-MAC processing  . . . . .   8
     5.3.  AEAD Ciphers  . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Peer Address Update . . . . . . . . . . . . . . . . . . . . .   8
   7.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  11
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     11.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Appendix A.  History  . . . . . . . . . . . . . . . . . . . . . .  14
   Appendix B.  Working Group Information  . . . . . . . . . . . . .  15
   Appendix C.  Contributors . . . . . . . . . . . . . . . . . . . .  15
   Appendix D.  Acknowledgements . . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16