Hierarchical HITs for HIPv2
draft-moskowitz-hip-hierarchical-hit-05

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HIP                                                         R. Moskowitz
Internet-Draft                                            HTT Consulting
Updates: 7401 (if approved)                                      S. Card
Intended status: Standards Track                         A. Wiethuechter
Expires: 13 November 2020                                  AX Enterprize
                                                             12 May 2020

                      Hierarchical HITs for HIPv2
                draft-moskowitz-hip-hierarchical-hit-05

Abstract

   This document describes using a hierarchical HIT to facilitate large
   deployments of managed devices.  Hierarchical HITs differ from HIPv2
   flat HITs by only using 64 bits for mapping the Host Identity,
   freeing 32 bits to bind in a hierarchy of Registering Entities that
   provide services to the consumers of hierarchical HITs.

Status of This Memo

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   This Internet-Draft will expire on 13 November 2020.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terms and Definitions . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Terminology  . . . . . . . . . . . . . . . .   3
     2.2.  Definitions . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Problem Space . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Meeting the future of Mobile Devices in a public space  .   4
     3.2.  Semi-permanency of Identities . . . . . . . . . . . . . .   4
     3.3.  Managing a large flat address space . . . . . . . . . . .   4
     3.4.  Defense against fraudulent HITs . . . . . . . . . . . . .   5
   4.  The Hierarchical Host Identity Tag (HHIT) . . . . . . . . . .   5
     4.1.  HHIT prefix . . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  HHIT Suite IDs  . . . . . . . . . . . . . . . . . . . . .   6
     4.3.  The Hierarchy ID (HID)  . . . . . . . . . . . . . . . . .   6
       4.3.1.  The Registered Assigning Authority (RAA)  . . . . . .   6
       4.3.2.  The Hierarchical HIT Domain Authority (HDA) . . . . .   6
       4.3.3.  Example of the HID DNS  . . . . . . . . . . . . . . .   7
       4.3.4.  HHIT DNS Retrieval  . . . . . . . . . . . . . . . . .   7
       4.3.5.  Changes to ORCHIDv2 to support Hierarchical HITs  . .   7
       4.3.6.  Collision risks with Hierarchical HITs  . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Appendix A.  Calculating Collision Probabilities  . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   This document expands on HIPv2 [RFC7401] to describe the structure of
   a hierarchical HIT (HHIT).  Some of the challenges for large scale
   deployment addressed by HHITs are presented.  The basics for the
   hierarchical HIT registries are defined here.

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   Including hierarchy information within the HIT is not a new concept.
   This was part of the original HIPv1 Architecture
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