EAP-TLS with PSK Authentication (EAP-TLS-PSK)
draft-mattsson-emu-eap-tls-psk-00

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Network Working Group                                        J. Mattsson
Internet-Draft                                                  M. Sethi
Intended status: Standards Track                                Ericsson
Expires: September 10, 2020                                      T. Aura
                                                        Aalto University
                                                                O. Friel
                                                                   Cisco
                                                           March 9, 2020

             EAP-TLS with PSK Authentication (EAP-TLS-PSK)
                   draft-mattsson-emu-eap-tls-psk-00

Abstract

   While TLS 1.3 supports authentication with Pre-Shared Key (PSK), EAP-
   TLS with TLS 1.3 explicitly forbids PSK authentication except when
   used for resumption.  This document specifies a separate EAP method
   (EAP-TLS-PSK) for use cases that require authentication based on
   external PSKs.

Status of This Memo

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Mattsson, et al.       Expires September 10, 2020               [Page 1]
Internet-Draft                 EAP-TLS-PSK                    March 2020

   to this document.  Code Components extracted from this document must
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements and Terminology  . . . . . . . . . . . . . .   3
   2.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Overview of the EAP-TLS-PSK Conversation  . . . . . . . .   3
       2.1.1.  Mutual Authentication . . . . . . . . . . . . . . . .   4
       2.1.2.  Termination . . . . . . . . . . . . . . . . . . . . .   4
       2.1.3.  Hello Retry Request . . . . . . . . . . . . . . . . .   4
       2.1.4.  Ticket Establishment  . . . . . . . . . . . . . . . .   4
       2.1.5.  Resumption  . . . . . . . . . . . . . . . . . . . . .   4
       2.1.6.  Privacy . . . . . . . . . . . . . . . . . . . . . . .   4
       2.1.7.  Fragmentation . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Identity Verification . . . . . . . . . . . . . . . . . .   4
     2.3.  Key Hierarchy . . . . . . . . . . . . . . . . . . . . . .   4
     2.4.  Parameter Negotiation and Compliance Requirements . . . .   4
     2.5.  EAP State Machines  . . . . . . . . . . . . . . . . . . .   4
   3.  IANA considerations . . . . . . . . . . . . . . . . . . . . .   4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
     4.1.  Security Claims . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Peer and Server Identities  . . . . . . . . . . . . . . .   5
     4.3.  Authorization . . . . . . . . . . . . . . . . . . . . . .   5
     4.4.  Resumption  . . . . . . . . . . . . . . . . . . . . . . .   5
     4.5.  Privacy Considerations  . . . . . . . . . . . . . . . . .   5
     4.6.  Pervasive Monitoring  . . . . . . . . . . . . . . . . . .   5
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     5.2.  Informative references  . . . . . . . . . . . . . . . . .   6
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   The Extensible Authentication Protocol (EAP), defined in [RFC3748],
   provides a standard mechanism for support of multiple authentication
   methods.  EAP-Transport Layer Security (EAP-TLS)
   [RFC5216][I-D.ietf-emu-eap-tls13] defines an EAP authentication
   method with certificate-based mutual authentication and key
   derivation utilizing the TLS handshake protocol for cryptographic
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