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) | |
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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)
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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 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 . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . 24Show full document text