Transport Layer Security (TLS) Authorization Using DTCP Certificate
draft-dthakore-tls-authz-03
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Darshak Thakore
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2013-02-24
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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.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://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 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
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