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Status:

INFORMATIONAL

Obsoletes:

RFC 4423

Authors:

R. Moskowitz, Ed.
M. Komu

Stream:

IETF

Source:

hip (int)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC9063

Discuss this RFC: Send questions or comments to the mailing listhipsec@ietf.org

Other actions:Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 9063

Abstract

This memo describes the Host Identity (HI) namespace, which providesa cryptographic namespace to applications, and the associatedprotocol layer, the Host Identity Protocol, located between theinternetworking and transport layers, that supports end-hostmobility, multihoming, and NAT traversal. Herein are presented thebasics of the current namespaces, their strengths and weaknesses, andhow a HI namespace will add completeness to them. The roles of the HInamespace in the protocols are defined.

This document obsoletes RFC 4423 and addresses the concerns raised bythe IESG, particularly that of crypto agility. The SecurityConsiderations section also describes measures against floodingattacks, usage of identities in access control lists, weaker types ofidentifiers, and trust on first use. This document incorporateslessons learned from the implementations of RFC 7401 and goes furtherto explain how HIP works as a secure signaling channel.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.