Secure DHCPv6
draft-ietf-dhc-sedhcpv6-21

Document Type Active Internet-Draft (dhc WG)
Last updated 2017-03-08 (latest revision 2017-02-21)
Replaces draft-jiang-dhc-sedhcpv6
Stream IETF
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Stream WG state In WG Last Call Jan 2015
Revised I-D Needed - Issue raised by AD
On Agenda dhc at IETF-98
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DHC Working Group                                                  L. Li
Internet-Draft                                       Tsinghua University
Intended status: Standards Track                                S. Jiang
Expires: August 25, 2017                    Huawei Technologies Co., Ltd
                                                                  Y. Cui
                                                     Tsinghua University
                                                               T. Jinmei
                                                           Infoblox Inc.
                                                                T. Lemon
                                                           Nominum, Inc.
                                                                D. Zhang
                                                       February 21, 2017

                             Secure DHCPv6
                       draft-ietf-dhc-sedhcpv6-21

Abstract

   DHCPv6 includes no deployable security mechanism that can protect
   end-to-end communication between DHCP clients and servers.  This
   document describes a mechanism for using public key cryptography to
   provide such security.  The mechanism provides encryption in all
   cases, and can be used for authentication based on pre-sharing of
   authorized certificates.

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 August 25, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Li, et al.               Expires August 25, 2017                [Page 1]
Internet-Draft                  SeDHCPv6                   February 2017

   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
   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 . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Security Issues of DHCPv6 . . . . . . . . . . . . . . . . . .   4
   5.  Secure DHCPv6 Overview  . . . . . . . . . . . . . . . . . . .   5
     5.1.  Solution Overview . . . . . . . . . . . . . . . . . . . .   5
     5.2.  New Components  . . . . . . . . . . . . . . . . . . . . .   6
     5.3.  Support for Algorithm Agility . . . . . . . . . . . . . .   7
     5.4.  Impact on RFC3315 . . . . . . . . . . . . . . . . . . . .   7
     5.5.  Applicability . . . . . . . . . . . . . . . . . . . . . .   8
   6.  DHCPv6 Client Behavior  . . . . . . . . . . . . . . . . . . .   8
   7.  DHCPv6 Server Behavior  . . . . . . . . . . . . . . . . . . .  11
   8.  Relay Agent Behavior  . . . . . . . . . . . . . . . . . . . .  13
   9.  Processing Rules  . . . . . . . . . . . . . . . . . . . . . .  14
     9.1.  Increasing Number Check . . . . . . . . . . . . . . . . .  14
     9.2.  Encryption Key Tag Calculation  . . . . . . . . . . . . .  14
   10. Extensions for Secure DHCPv6  . . . . . . . . . . . . . . . .  15
     10.1.  New DHCPv6 Options . . . . . . . . . . . . . . . . . . .  15
       10.1.1.  Algorithm Option . . . . . . . . . . . . . . . . . .  15
       10.1.2.  Certificate Option . . . . . . . . . . . . . . . . .  17
       10.1.3.  Signature option . . . . . . . . . . . . . . . . . .  18
       10.1.4.  Increasing-number Option . . . . . . . . . . . . . .  20
       10.1.5.  Encryption-Key-Tag Option  . . . . . . . . . . . . .  20
       10.1.6.  Encrypted-message Option . . . . . . . . . . . . . .  21
     10.2.  New DHCPv6 Messages  . . . . . . . . . . . . . . . . . .  21
     10.3.  Status Codes . . . . . . . . . . . . . . . . . . . . . .  22
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