Using EAP-TLS with TLS 1.3
draft-ietf-emu-eap-tls13-04

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Network Working Group                                        J. Mattsson
Internet-Draft                                                  M. Sethi
Updates: 5216 (if approved)                                     Ericsson
Intended status: Standards Track                          March 11, 2019
Expires: September 12, 2019

                       Using EAP-TLS with TLS 1.3
                      draft-ietf-emu-eap-tls13-04

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.  EAP-TLS
   with TLS 1.3 further improves security and privacy by mandating use
   of privacy and revocation checking.  This document updates RFC 5216.

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
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   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 September 12, 2019.

Copyright Notice

   Copyright (c) 2019 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
   (https://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

Mattsson & Sethi       Expires September 12, 2019               [Page 1]
Internet-Draft            EAP-TLS with TLS 1.3                March 2019

   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 . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Overview of the EAP-TLS Conversation  . . . . . . . . . .   4
       2.1.1.  Base Case . . . . . . . . . . . . . . . . . . . . . .   4
       2.1.2.  Resumption  . . . . . . . . . . . . . . . . . . . . .   7
       2.1.3.  Termination . . . . . . . . . . . . . . . . . . . . .   9
       2.1.4.  Privacy . . . . . . . . . . . . . . . . . . . . . . .  13
       2.1.5.  Fragmentation . . . . . . . . . . . . . . . . . . . .  14
     2.2.  Identity Verification . . . . . . . . . . . . . . . . . .  15
     2.3.  Key Hierarchy . . . . . . . . . . . . . . . . . . . . . .  15
     2.4.  Parameter Negotiation and Compliance Requirements . . . .  16
     2.5.  EAP State Machines  . . . . . . . . . . . . . . . . . . .  17
   3.  Detailed Description of the EAP-TLS Protocol  . . . . . . . .  17
   4.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  17
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  18
     5.1.  Security Claims . . . . . . . . . . . . . . . . . . . . .  18
     5.2.  Peer and Server Identities  . . . . . . . . . . . . . . .  18
     5.3.  Certificate Validation  . . . . . . . . . . . . . . . . .  18
     5.4.  Certificate Revocation  . . . . . . . . . . . . . . . . .  18
     5.5.  Packet Modification Attacks . . . . . . . . . . . . . . .  19
     5.6.  Authorization . . . . . . . . . . . . . . . . . . . . . .  19
     5.7.  Resumption  . . . . . . . . . . . . . . . . . . . . . . .  20
     5.8.  Privacy Considerations  . . . . . . . . . . . . . . . . .  21
     5.9.  Pervasive Monitoring  . . . . . . . . . . . . . . . . . .  22
     5.10. Discovered Vulnerabilities  . . . . . . . . . . . . . . .  23
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  23
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .  23
     6.2.  Informative references  . . . . . . . . . . . . . . . . .  24
   Appendix A.  Updated references . . . . . . . . . . . . . . . . .  27
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  27
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  27
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  28

1.  Introduction

   The Extensible Authentication Protocol (EAP), defined in [RFC3748],
   provides a standard mechanism for support of multiple authentication