EAP Session-Id Derivation for EAP-SIM, EAP-AKA, and PEAP
draft-ietf-emu-eap-session-id-07

Document Type Active Internet-Draft (emu WG)
Last updated 2020-09-21 (latest revision 2020-09-03)
Replaces draft-dekok-emu-eap-session-id
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Details
Network Working Group                                        DeKok, Alan
INTERNET-DRAFT                                                FreeRADIUS
Updates: 5247 (if approved)                             3 September 2020
Intended status: Standards Track
Expires: March 03, 2021

        EAP Session-Id Derivation for EAP-SIM, EAP-AKA, and PEAP
                  draft-ietf-emu-eap-session-id-07.txt

Abstract

   RFC 5247 is updated to define and clarity EAP Session-Id derivation
   for multiple EAP methods.  The derivation of Session-Id was not given
   for EAP-SIM or EAP-AKA when using the fast reconnect exchange instead
   of full authentication.  The derivation of Session-Id for full
   authentication is clarified for both EAP-SIM and EAP-AKA.  The
   deriviation of Session-Id for PEAP is also given.  The definition for
   PEAP follows the definition for other TLS-based EAP methods.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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   This Internet-Draft will expire on March 03, 2021.

Copyright Notice

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

DeKok, Alan                 Proposed Standard                   [Page 1]
INTERNET-DRAFT          EAP Session-Id Derivation       3 September 2020

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

DeKok, Alan                 Proposed Standard                   [Page 2]
INTERNET-DRAFT          EAP Session-Id Derivation       3 September 2020

Table of Contents

1.  Introduction .............................................    4
   1.1.  Requirements Language ...............................    4
2.  Updates to RFC 5247 Appendix A ...........................    5
   2.1.  EAP-AKA .............................................    5
   2.2.  EAP-SIM .............................................    5
   2.3.  Rationale for EAP-AKA and EAP-SIM updates ...........    6
3.  Session-Id for PEAP ......................................    7
4.  Security Considerations ..................................    7
5.  IANA Considerations ......................................    8
6.  References ...............................................    8
   6.1.  Normative References ................................    8
   6.2.  Informative References ..............................    8

DeKok, Alan                 Proposed Standard                   [Page 3]
INTERNET-DRAFT          EAP Session-Id Derivation       3 September 2020

1.  Introduction

   EAP [RFC3748] Session-Id derivation has not been defined for EAP-SIM
   and EAP-AKA when using the fast reconnect exchange instead of full
   authentication.  [RFC5247] defines the Session-Id for these EAP
   methods, but that derivation is only applicable for the full
   authentication case.  The Session-Id derivation was not defined for
   EAP-AKA', but [AKAP] now defines it, along with other updates.  As
   such, the definition for EAP-AKA' is not included here.

   Further, the deriviation of Session-Id for full authentication is
   clarified, as the text in [RFC5247] is ambiguousl

   The IEEE has defined Fast Initial Link Setup (FILS) authentication
   [FILS], which needs the EAP Session-Id in order for the EAP Re-
   authentication Protocol (ERP) [RFC6696] to work.  It is therefore
   important to address the existing deficiencies in the definition of
   EAP Session-Id.

   Finally, [RFC5247] did not define Session-Id for PEAP [MS-PEAP],
   [PEAP]. We correct these deficiencies here by updating [RFC5247] with
   the Session-Id derivation during fast-reconnect exchange for EAP-SIM
   and EAP-AKA; clarfying the Session-Id derivation during full
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