Using CBOR Web Tokens (CWTs) in Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS)
draft-tschofenig-tls-cwt-01

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TLS                                                        H. Tschofenig
Internet-Draft                                               M. Brossard
Intended status: Standards Track                             Arm Limited
Expires: May 7, 2020                                   November 04, 2019

   Using CBOR Web Tokens (CWTs) in Transport Layer Security (TLS) and
                Datagram Transport Layer Security (DTLS)
                      draft-tschofenig-tls-cwt-01

Abstract

   The TLS protocol supports different credentials, including pre-shared
   keys, raw public keys, and X.509 certificates.  For use with public
   key cryptography developers have to decide between raw public keys,
   which require out-of-band agreement and full-fletched X.509
   certificates.  For devices where the reduction of code size is
   important it is desirable to minimize the use of X.509-related
   libraries.  With the CBOR Web Token (CWT) a structure has been
   defined that allows CBOR-encoded claims to be protected with CBOR
   Object Signing and Encryption (COSE).

   This document registers a new value to the "TLS Certificate Types"
   sub-registry to allow TLS and DTLS to use CWTs.  Conceptually, CWTs
   can be seen as a certificate format (when with public key
   cryptography) or a Kerberos ticket (when used with symmetric key
   cryptography).

Status of This Memo

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

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Copyright Notice

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   3
   3.  The CWT Certificate Type  . . . . . . . . . . . . . . . . . .   3
   4.  Representation and Verification the Identity of Application
       Services  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security and Privacy Considerations . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Appendix A.  History  . . . . . . . . . . . . . . . . . . . . . .   8
   Appendix B.  Working Group Information  . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   The CBOR Web Token (CWT) [RFC8392] was defined as the CBOR-based
   version of the JSON Web Token (JWT) [RFC7519].  JWT is used
   extensively on Web application and for use with Internet of Things

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   environments the believe is that a more lightweight encoding, namely