Compact Format of IKEv2 Payloads
draft-smyslov-ipsecme-ikev2-compact-00

Document Type Active Internet-Draft (individual)
Last updated 2016-10-07
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                         V. Smyslov
Internet-Draft                                                ELVIS-PLUS
Intended status: Standards Track                         October 7, 2016
Expires: April 10, 2017

                    Compact Format of IKEv2 Payloads
                 draft-smyslov-ipsecme-ikev2-compact-00

Abstract

   This document describes a method for reducing the size of the
   Internet Key Exchange version 2 (IKEv2) messages by using an
   alternate format for IKE payloads.  Standard format of many IKE
   payloads contains a lot of redundancy.  This document takes advantage
   of this fact and specifies a way to eliminate some redundancy by
   using more dense encoding.  Reducing size of IKEv2 messages is
   desirable for low power consumption battery powered devices.  It also
   helps to avoid IP fragmentation of IKEv2 messages.

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 http://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 10, 2017.

Copyright Notice

   Copyright (c) 2016 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
   (http://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

Smyslov                  Expires April 10, 2017                 [Page 1]
Internet-Draft                IKEv2 Compact                 October 2016

   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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Requirements Language  . . . . . . . . . . . . . . . . . . . .  4
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  Compact Representation of IKEv2 Payloads . . . . . . . . . . .  7
     4.1.  Compact Generic Payload  . . . . . . . . . . . . . . . . .  7
     4.2.  Compact SA Payload . . . . . . . . . . . . . . . . . . . . 11
       4.2.1.  Compact Proposal Substructure  . . . . . . . . . . . . 11
       4.2.2.  Compact Transform Substructures  . . . . . . . . . . . 12
     4.3.  Compact Notify Payload . . . . . . . . . . . . . . . . . . 17
   5.  Compact Format Negotiation . . . . . . . . . . . . . . . . . . 19
   6.  Interaction with other IKEv2 Extensions  . . . . . . . . . . . 20
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 21
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 22
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 23
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 23
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 23
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 24

Smyslov                  Expires April 10, 2017                 [Page 2]
Internet-Draft                IKEv2 Compact                 October 2016

1.  Introduction

   The Internet Key Exchange protocol version 2 (IKEv2) specified in
   [RFC7296] is used in the IP Security (IPsec) architecture for the
   purposes of Security Association (SA) parameters negotiation and
   authenticated key exchange.  The protocol uses UDP as the transport
   for its messages, which size varies from less than one hundred bytes
   to several kBytes.

   Decreasing the size of IKEv2 messages is highly desirable for the
   Internet of Things (IoT) devices utilizing a lower power consumption
   technology.  For some of such devices the power consumption for
   transmitting extra bits over network is prohibitively high (see
   appendix A of [IPSEC-IOT-REQS]).  Many such devices are battery
   powered without an ability to recharge or to replace the battery
   which serves for the life cycle of the device (often a few years).
   For this reason the task of reducing the power consumption for such
Show full document text