Host Identity Protocol Architecture
draft-ietf-hip-rfc4423-bis-20
Network Working Group R. Moskowitz, Ed.
Internet-Draft HTT Consulting
Obsoletes: 4423 (if approved) M. Komu
Intended status: Informational Ericsson
Expires: August 18, 2019 February 14, 2019
Host Identity Protocol Architecture
draft-ietf-hip-rfc4423-bis-20
Abstract
This memo describes the Host Identity (HI) namespace, that provides a
cryptographic namespace to applications, and the associated protocol
layer, the Host Identity Protocol, located between the
internetworking and transport layers, that supports end-host
mobility, multihoming and NAT traversal. Herein are presented the
basics of the current namespaces, their strengths and weaknesses, and
how a HI namespace will add completeness to them. The roles of the
HI namespace in the protocols are defined.
This document obsoletes RFC 4423 and addresses the concerns raised by
the IESG, particularly that of crypto agility. The section on
security considerations describe also measures against flooding
attacks, usage of identities in access control lists, weaker types of
identifiers and trust on first use. This document incorporates
lessons learned from the implementations of RFC 5201 and goes further
to explain how HIP works as a secure signaling channel.
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 18, 2019.
Moskowitz & Komu Expires August 18, 2019 [Page 1]
Internet-Draft Host Identity Protocol Architecture February 2019
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Terms common to other documents . . . . . . . . . . . . . . 4
2.2. Terms specific to this and other HIP documents . . . . . . 5
3. Background . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. A desire for a namespace for computing platforms . . . . . 8
4. Host Identity namespace . . . . . . . . . . . . . . . . . . . 9
4.1. Host Identifiers . . . . . . . . . . . . . . . . . . . . . 10
4.2. Host Identity Hash (HIH) . . . . . . . . . . . . . . . . . 11
4.3. Host Identity Tag (HIT) . . . . . . . . . . . . . . . . . . 11
4.4. Local Scope Identifier (LSI) . . . . . . . . . . . . . . . 12
4.5. Storing Host Identifiers in directories . . . . . . . . . . 13
5. New stack architecture . . . . . . . . . . . . . . . . . . . 14
5.1. On the multiplicity of identities . . . . . . . . . . . . . 15
6. Control plane . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1. Base exchange . . . . . . . . . . . . . . . . . . . . . . . 16
6.2. End-host mobility and multi-homing . . . . . . . . . . . . 17
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