Transport Layer Security (TLS) Authorization Using DTCP Certificate
draft-dthakore-tls-authz-03

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Transport Layer Security                                      D. Thakore
Internet-Draft                                                 CableLabs
Intended status: Informational                             February 2013
Expires: August 03, 2013

  Transport Layer Security (TLS) Authorization Using DTCP Certificate
                      draft-dthakore-tls-authz-03

Abstract

   This document specifies the use of DTCP certificate as an
   authorization extension in the Transport Layer Security Handshake
   Protocol, according to guidelines in RFC 5878.  Extensions carried in
   the client and server Hello messages confirm that both parties
   support the desired authorization data types.  Then if supported by
   both the client and server, DTCP certificates are exchanged in the
   supplemental data handshake TLS handshake message as specified in
   RFC4680.

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 August 03, 2013.

Copyright Notice

   Copyright (c) 2013 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
   (http://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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2

Thakore                 Expires August 03, 2013                 [Page 1]
Internet-Draft            TLS Auth Using DTCP              February 2013

     1.1.  Use Case for using DTCP Certificates . . . . . . . . . . .  3
     1.2.  Conventions  . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
     2.1.  Overview of DTCP Certificates  . . . . . . . . . . . . . .  3
     2.2.  Overview of Supplemental Data handshake  . . . . . . . . .  4
     2.3.  Overview of authorization extensions . . . . . . . . . . .  5
     2.4.  Overview of supplemental data usage for authorization  . .  5
   3.  DTCP Authorization Data Format . . . . . . . . . . . . . . . .  6
     3.1.  DTCP Authorization Type  . . . . . . . . . . . . . . . . .  6
     3.2.  DTCP Authorization Data  . . . . . . . . . . . . . . . . .  6
     3.3.  Usage rules for clients to exchange DTCP Authorization data 7
     3.4.  Usage rules for servers to exchange DTCP Authorization data 7
     3.5.  TLS message exchange with dtcp_authz_data  . . . . . . . .  7
     3.6.  Alert Messages . . . . . . . . . . . . . . . . . . . . . .  8
   4.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .  9
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  9
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     7.1.  Normative References . . . . . . . . . . . . . . . . . . . 10
     7.2.  Informative References . . . . . . . . . . . . . . . . . . 11
   Appendix A.  Additional Stuff  . . . . . . . . . . . . . . . . . . 12
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.  Introduction

   The Transport Layer Security (TLS) protocol (TLS1.0 [RFC2246], TLS1.1
   [RFC4346], TLS1.2 [RFC5246]) is being used in an increasing variety
   of operational environments, the most common among which is its use
   in securing HTTP traffic ([RFC2818]).  RFC 5878 [AUTHZ] introduces
   extensions that enable TLS to operate in environments where
   authorization information needs to be exchanged between the client
   and the server before any protected data is exchanged.  The use of
   these TLS authorization extensions is especially attractive since it
   can allow the client and server to determine the type of protected
   data to exchange based on the authorization information received in
   the extensions.

   A number of consumer electronics devices such as TV's, tablets, game
   consoles, set-top boxes and other multimedia devices contain Digital
   Transmission Licensing Administrator [DTLA] issued Digital
   Transmission Content Protection [DTCP] certificates.  These
   certificates are used for link protection over various types of links
   like DTCP over IP [DTCP-IP] to securely transmit premium audio-visual