Improved Extensible Authentication Protocol Method for 3GPP Mobile Network Authentication and Key Agreement (EAP-AKA')
draft-ietf-emu-rfc5448bis-09
| Document | Type | Active Internet-Draft (emu WG) | |
|---|---|---|---|
| Authors | Jari Arkko , Vesa Lehtovirta , Vesa Torvinen , Pasi Eronen | ||
| Last updated | 2021-01-11 | ||
| Replaces | draft-arkko-eap-rfc5448bis | ||
| Stream | Internent Engineering Task Force (IETF) | ||
| Intended RFC status | Informational | ||
| Formats | plain text pdf htmlized (tools) htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Joseph Salowey | ||
| Shepherd write-up | Show (last changed 2019-11-17) | ||
| IESG | IESG state | Approved-announcement to be sent::External Party | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Roman Danyliw | ||
| Send notices to | Joseph Salowey <joe@salowey.net> | ||
| IANA | IANA review state | IANA OK - Actions Needed | |
Network Working Group J. Arkko
Internet-Draft V. Lehtovirta
Updates: 5448,4187 (if approved) V. Torvinen
Intended status: Informational Ericsson
Expires: July 15, 2021 P. Eronen
Independent
January 11, 2021
Improved Extensible Authentication Protocol Method for 3GPP Mobile
Network Authentication and Key Agreement (EAP-AKA')
draft-ietf-emu-rfc5448bis-09
Abstract
The 3GPP Mobile Network Authentication and Key Agreement (AKA) is an
authentication mechanism for devices wishing to access mobile
networks. RFC 4187 (EAP-AKA) made the use of this mechanism possible
within the Extensible Authentication Protocol (EAP) framework. RFC
5448 (EAP-AKA') was an improved version of EAP-AKA.
This memo is the most recent specification of EAP-AKA', including,
for instance, details and references about related to operating EAP-
AKA' in 5G networks.
EAP-AKA' differs from EAP-AKA by providing a key derivation function
that binds the keys derived within the method to the name of the
access network. The key derivation function has been defined in the
3rd Generation Partnership Project (3GPP). EAP-AKA' allows its use
in EAP in an interoperable manner. EAP-AKA' also updates the
algorithm used in hash functions, as it employs SHA-256 / HMAC-
SHA-256 instead of SHA-1 / HMAC-SHA-1 as in EAP-AKA.
This version of EAP-AKA' specification specifies the protocol
behaviour for both 4G and 5G deployments, whereas the previous
version only did this for 4G.
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/.
Arkko, et al. Expires July 15, 2021 [Page 1]
Internet-Draft EAP-AKA' January 2021
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 July 15, 2021.
Copyright Notice
Copyright (c) 2021 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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 5
3. EAP-AKA' . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. AT_KDF_INPUT . . . . . . . . . . . . . . . . . . . . . . 8
3.2. AT_KDF . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3. Key Derivation . . . . . . . . . . . . . . . . . . . . . 13
3.4. Hash Functions . . . . . . . . . . . . . . . . . . . . . 15
3.4.1. PRF' . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4.2. AT_MAC . . . . . . . . . . . . . . . . . . . . . . . 15
3.4.3. AT_CHECKCODE . . . . . . . . . . . . . . . . . . . . 15
3.5. Summary of Attributes for EAP-AKA' . . . . . . . . . . . 16
4. Bidding Down Prevention for EAP-AKA . . . . . . . . . . . . . 18
4.1. Summary of Attributes for EAP-AKA . . . . . . . . . . . . 20
5. Peer Identities . . . . . . . . . . . . . . . . . . . . . . . 20
5.1. Username Types in EAP-AKA' Identities . . . . . . . . . . 20
5.2. Generating Pseudonyms and Fast Re-Authentication
Identities . . . . . . . . . . . . . . . . . . . . . . . 21
5.3. Identifier Usage in 5G . . . . . . . . . . . . . . . . . 22
5.3.1. Key Derivation . . . . . . . . . . . . . . . . . . . 23
5.3.2. EAP Identity Response and EAP-AKA' AT_IDENTITY
Attribute . . . . . . . . . . . . . . . . . . . . . . 24
6. Exported Parameters . . . . . . . . . . . . . . . . . . . . . 24
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