The DANE Authentication Chain Extension for TLS
draft-dukhovni-tls-dnssec-chain-00

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TLS                                                          V. Dukhovni
Internet-Draft                                                 Two Sigma
Intended status: Experimental                                   S. Huque
Expires: May 7, 2020                                          Salesforce
                                                               W. Toorop
                                                              NLnet Labs
                                                              P. Wouters
                                                                 Red Hat
                                                                M. Shore
                                                                  Fastly
                                                        November 4, 2019

            The DANE Authentication Chain Extension for TLS
                   draft-dukhovni-tls-dnssec-chain-00

Abstract

   This draft describes a new TLS extension for transport of a DNS
   record set serialized with the DNSSEC signatures needed to
   authenticate that record set.  This allows TLS clients to perform
   DANE authentication of a TLS server without the need to perform
   additional DNS record lookups.

Status of This Memo

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

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   This Internet-Draft will expire on May 7, 2020.

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

Dukhovni, et al.           Expires May 7, 2020                  [Page 1]
Internet-Draft         TLS DNSSEC Chain Extension          November 2019

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Table of Contents

   1.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DNSSEC Authentication Chain Extension . . . . . . . . . . . .   4
     3.1.  Protocol, TLS 1.2 . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Protocol, TLS 1.3 . . . . . . . . . . . . . . . . . . . .   4
     3.3.  DNSSEC Authentication Chain Data  . . . . . . . . . . . .   5
       3.3.1.  Authenticated Denial of Existence . . . . . . . . . .   9
   4.  Construction of Serialized Authentication Chains  . . . . . .   9
   5.  Caching and Regeneration of the Authentication Chain  . . . .  10
   6.  Verification  . . . . . . . . . . . . . . . . . . . . . . . .  11
   7.  Extension pinning . . . . . . . . . . . . . . . . . . . . . .  11
   8.  Trust Anchor Maintenance  . . . . . . . . . . . . . . . . . .  13
   9.  Virtual Hosting . . . . . . . . . . . . . . . . . . . . . . .  13
   10. Operational Considerations  . . . . . . . . . . . . . . . . .  14
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  15
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   13. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  16
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  16
     14.2.  Informative References . . . . . . . . . . . . . . . . .  17
   Appendix A.  Test vectors . . . . . . . . . . . . . . . . . . . .  19
     A.1.  _443._tcp.www.example.com . . . . . . . . . . . . . . . .  20
     A.2.  _25._tcp.example.com NSEC wildcard  . . . . . . . . . . .  24
     A.3.  _25._tcp.example.org NSEC3 wildcard . . . . . . . . . . .  25
     A.4.  _443._tcp.www.example.org CNAME . . . . . . . . . . . . .  27
     A.5.  _443._tcp.www.example.net DNAME . . . . . . . . . . . . .  28
     A.6.  _25._tcp.smtp.example.com NSEC Denial of Existence  . . .  30
     A.7.  _25._tcp.smtp.example.org NSEC3 Denial of Existence . . .  32
     A.8.  _443._tcp.www.insecure.example NSEC3 opt-out insecure
           delegation  . . . . . . . . . . . . . . . . . . . . . . .  34
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  36
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