Using EAP-TLS with TLS 1.3
draft-ietf-emu-eap-tls13-02

Document Type Active Internet-Draft (emu WG)
Last updated 2018-10-16
Replaces draft-mattsson-eap-tls13
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Network Working Group                                        J. Mattsson
Internet-Draft                                                  M. Sethi
Updates: 5216 (if approved)                                     Ericsson
Intended status: Standards Track                        October 16, 2018
Expires: April 19, 2019

                       Using EAP-TLS with TLS 1.3
                      draft-ietf-emu-eap-tls13-02

Abstract

   This document specifies the use of EAP-TLS with TLS 1.3 while
   remaining backwards compatible with existing implementations of EAP-
   TLS.  TLS 1.3 provides significantly improved security, privacy, and
   reduced latency when compared to earlier versions of TLS.  This
   document updates RFC 5216.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on April 19, 2019.

Copyright Notice

   Copyright (c) 2018 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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   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of

Mattsson & Sethi         Expires April 19, 2019                 [Page 1]
Internet-Draft            EAP-TLS with TLS 1.3              October 2018

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements and Terminology  . . . . . . . . . . . . . .   3
   2.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Overview of the EAP-TLS Conversation  . . . . . . . . . .   3
       2.1.1.  Base Case . . . . . . . . . . . . . . . . . . . . . .   3
       2.1.2.  Resumption  . . . . . . . . . . . . . . . . . . . . .   6
       2.1.3.  Termination . . . . . . . . . . . . . . . . . . . . .   8
       2.1.4.  Privacy . . . . . . . . . . . . . . . . . . . . . . .  10
       2.1.5.  Fragmentation . . . . . . . . . . . . . . . . . . . .  12
     2.2.  Identity Verification . . . . . . . . . . . . . . . . . .  12
     2.3.  Key Hierarchy . . . . . . . . . . . . . . . . . . . . . .  12
     2.4.  Parameter Negotiation and Compliance Requirements . . . .  13
     2.5.  EAP State Machines  . . . . . . . . . . . . . . . . . . .  13
   3.  Detailed Description of the EAP-TLS Protocol  . . . . . . . .  14
   4.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  14
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
     5.1.  Security Claims . . . . . . . . . . . . . . . . . . . . .  14
     5.2.  Peer and Server Identities  . . . . . . . . . . . . . . .  15
     5.3.  Certificate Validation  . . . . . . . . . . . . . . . . .  15
     5.4.  Certificate Revocation  . . . . . . . . . . . . . . . . .  15
     5.5.  Packet Modification Attacks . . . . . . . . . . . . . . .  15
     5.6.  Privacy Considerations  . . . . . . . . . . . . . . . . .  15
     5.7.  Pervasive Monitoring  . . . . . . . . . . . . . . . . . .  16
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  16
     6.2.  Informative references  . . . . . . . . . . . . . . . . .  18
   Appendix A.  Updated references . . . . . . . . . . . . . . . . .  19
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

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] specifies
   an EAP authentication method with certificate-based mutual
   authentication and key derivation utilizing the TLS handshake
   protocol for cryptographic algorithms and protocol version
   negotiation, mutual authentication, and establishment of shared
   secret keying material.  EAP-TLS is widely supported for
   authentication in IEEE 802.11 [IEEE-802.11] networks (Wi-Fi) using
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