IEC 62481-3:2010

Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 3: Link protection

IEC 62481-3:2010 specifies the DLNA link protection guidelines, which are an extension of the DLNA guidelines. DLNA link protection is defined as the protection of a content stream between two devices on a DLNA network from illegitimate observation or interception using the protocols defined within this standard. This bilingual version (2012-11) corresponds to the monolingual English version, published in 2010-11.

Lignes directives pour l'interopérabilité des dispositifs domestiques DLNA (Digital Living Network Alliance) - Partie 3: Protection des liaisons

La CEI 62481-3:2010 spécifie les directives de la protection de liaison DLNA, qui constituent une extension des directives DLNA. La protection de liaison DLNA est définie comme la protection d'un flux de contenu entre deux dispositifs sur un réseau DLNA contre une observation ou une interception illégitime, utilisant les protocoles définis dans la présente norme. La présente version bilingue (2012-11) correspond à la version anglaise monolingue publiée en 2010-11.

General Information

• Status: Published
• Publication Date: 09-Nov-2010
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 35.100.05 - Multilayer applications
• ICS: 35.110 - Networking
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 23-Oct-2013

Relations

• Revised: IEC 62481-3:2013 - Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 3: Link protection
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62481-3
®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD

colour
inside

Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection



IEC 62481-3:2010(E)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch

About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
§ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
§ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
§ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
§ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]

---------------------- Page: 2 ----------------------
IEC 62481-3
®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD

colour
inside

Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 33.100; 35.100.06; 35.110 ISBN 978-2-88912-204-2
® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 3 ----------------------
– 2 – 62481-3 Ó IEC:2010(E)
CONTENTS
FOREW ORD . 5
1 Sc o pe . 7
2 Normative reference . 7
3 Terms, definitions and acronyms . 8
3.1 Terms and definition . 8
3.2 Abbreviation terms . 12
4 DLNA home network architecture . 13
5 DLNA device model . 13
6 Guideline terminology and conventions . 13
6.1 Guideline compliance classifiers . 13
6.2 Standard of specification usage classifiers . 13
6.3 Guideline font usage conventions . 14
6.4 Guideline syntax notation convention . 14
6.5 Guideline normative and informative text conventions . 15
6.6 DLNA XML namespaces and schemas . 15
7 Common link protection guidelines . 15
7.1 General . 15
7.2 Conditions for measuring time in message exchanges . 18
7.3 Networking and connectivity . 18
7.3.1 General . 18
7.3.2 New general capability requirements – Bluetooth NC CP – Power
saving modes . 18
7.4 Device discovery and control . 19
7.5 Media management . 19
7.5.1 Media management – AV media management . 19
7.5.2 AV media management guidelines . 22
7.6 Media transport . 25
7.6.1 General . 25
7.6.2 Media transport protocols . 25
7.6.3 HTTP transport . 27
7.6.4 HTTP media transport for streaming transfer guidelines . 34
7.6.5 HTTP media transport for interactive transfer guidelines . 34
7.6.6 RTP transport . 35
7.7 Content conversion device virtualization . 36
7.8 Media interoperability unit (MIU) . 36
7.9 Link protection technology guidelines requirements . 36
7.9.1 Link protection system – DTCP-IP. 36
7.9.2 Link protection system – Windows media DRM for network devices . 37
8 DTCP-IP link protection system guidelines . 37
8.1 General . 37
8.2 Networking and connectivity . 37
8.2.1 Networking and connectivity – General capability requirements. 37
8.2.2 New DLNAQOS requirements QoS requirement for DTCP-IP traffic . 38
8.2.3 New device requirements – Common NC CP – Wireless security . 38
8.3 Device discovery and control . 38
8.4 Media management . 38

---------------------- Page: 4 ----------------------
62481-3 Ó IEC:2010(E) – 3 –
8.4.1 Media management – AV media management . 38
8.4.2 MM CP – DTCP-IP URI . 38
8.5 Media transport . 39
8.5.1 HTTP transport . 39
8.5.2 RTP transport . 40
8.6 Content conversion device virtualization . 42
8.7 Media interoperability unit (MIU) . 42
8.8 Media format – DTCP-IP profiling guidelines . 42
8.8.1 General . 42
8.8.2 CP DTCP-IP – Profile . 42
8.8.3 CP DTCP-IP – Profile MIME type definition . 43
8.8.4 CP DTCP-IP – Profile protected and unprotected content portions . 44
8.8.5 CP DTCP-IP – Profile HTTP encapsulation . 45
8.8.6 DTCP-IP profile encapsulation . 45
8.9 General requirements . 47
8.9.1 General . 47
8.9.2 CP DTCP-IP – Requirements. 47
9 WMDRM-ND link protection system guidelines . 47
9.1 General . 47
9.2 General requirements . 48
9.2.1 General . 48
9.2.2 CP WMDRM-ND – Requirements . 48
9.2.3 CP WMDRM-ND – Support for HTTP . 48
9.2.4 CP WMDRM-ND – Support for RTP . 48
9.2.5 CP WMDRM-ND – Registration and revalidation procedures . 49
9.2.6 CP WMDRM-ND – Discovery of content receivers . 49
9.3 Networking and connectivity . 50
9.3.1 Networking and connectivity – General capability requirements. 50
9.3.2 CP WMDRM-ND – QoS requirements . 50
9.4 Device discovery and control . 50
9.4.1 General . 50
9.4.2 CP WMDRM-ND – Additional rules for DMRs . 50
9.5 Media management . 50
9.6 Media transport . 51
9.6.1 HTTP transport . 51
9.6.2 RTP transport . 54
9.7 Content conversion device virtualization . 56
9.8 Media interoperability unit (MIU) . 56
9.9 Media format – WMDRM-ND profiling guidelines . 56
9.9.1 General . 56
9.9.2 CP WMDRM-ND – Identification of content transferred using
WMDRM-ND . 56
9.9.3 CP WMDRM-ND – Media format requirements . 57
9.9.4 CP WMDRM-ND – MIME type . 57
9.9.5 CP WMDRM-ND – Decoder friendly alignment position . 57
9.9.6 CP WMDRM-ND – Media format alignment element . 57
Annex A (informative) An introduction to DLNA seek operations . 58
Bibliography . 67

---------------------- Page: 5 ----------------------
– 4 – 62481-3 Ó IEC:2010(E)
Figure 1 – Guideline layout and definitions . 16
Figure 2 – Visual map of possible values for the attribute tables . 17
Figure A.1 – UCDAM definitions for seek operations . 59
Figure A.2 – Full random access data availability model . 60
Figure A.3 – Limited random access data availability model mode 0 . 62
Figure A.4 – Limited random access data availability mode 1 . 63
Figure A.5 – Content flow unprotected content . 65
Figure A.6 – Content flow link protected content . 65

Table 1 – DLNA namespace values . 15
Table 2 – Allowed values for change indicator field in attribute table . 17
Table 3 – Normative priorities for dlna traffic types for link protection . 18
Table 4 – Summary of domain elements for full random access data availability mode . 20
Table 5 – Summary of domain elements for limited random access data availability
model . 21
Table 6 – AV media management guideline changes . 22
Table 7 – Recommended metadata properties . 23
Table 8 – Property type and multi value . 23
Table 9 – Updates to existing general media transport guidelines . 26
Table 10 – Updates to existing general HTTP media transport guidelines . 27
Table 11 – Updates to existing general HTTP media transport for streaming transfer
guidelines . 34
Table A.1 – DLNA constructs of full random access data availability mode . 61
Table A.2 – DLNA constructs of limited random access data availability model . 64

---------------------- Page: 6 ----------------------
62481-3 Ó IEC:2010(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME
NETWORKED DEVICE INTEROPERABILITY GUIDELINES –

Part 3: Link protection


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62481-3 has been prepared by technical area 9: Audio, video and
multimedia applications for end-user network, of IEC technical committee 100: Audio, video
and multimedia systems and equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/1617/CDV 100/1739/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 7 ----------------------
– 6 – 62481-3 Ó IEC:2010(E)
A list of all parts of the IEC 62481 series, published under the general title Digital living
network alliance (DLNA) home networked device interoperability guidelines, can be found on
the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

---------------------- Page: 8 ----------------------
62481-3 Ó IEC:2010(E) – 7 –
DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME
NETWORKED DEVICE INTEROPERABILITY GUIDELINES –

Part 3: Link protection



1 Scope
This part of IEC 62481 specifies the DLNA link protection guidelines, which are an extension
of the DLNA guidelines. DLNA link protection is defined as the protection of a content stream
between two devices on a DLNA network from illegitimate observation or interception using
the protocols defined within this standard.
Content protection is an important mechanism for ensuring that commercial content is
protected from piracy and illegitimate redistribution. Link protection is a technique that
enables distribution of protected commercial content on a home network, thus resulting in
greater consumer flexibility while still preserving the rights of copyright holders and content
providers.
The guidelines in this standard reference existing technologies for link protection and provide
mechanisms for interoperability between different implementations as well as integration with
the DLNA architecture.
This standard is organized to align with the overall structure of IEC 62481-1 and IEC 62481-2.
2 Normative reference
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 62481-1:2007, Digital living network alliance (DLNA) home networked device
interoperability guidelines – Part 1: Architecture and protocols
IEC 62481-2:2007, Digital living network alliance (DLNA) home networked device
interoperability guidelines – Part 2: DLNA media formats
ISO/IEC 13818-1:2007, Information technology – Generic coding of moving pictures and
associated audio information: Systems
ISO/IEC 13818-2:2007, Information technology – Generic coding of moving pictures and
associated audio information: Video
ISO/IEC 14496-2:2004 Information technology – Coding of audio-visual objects – Part 2:
Visual
Amendment 1 (2004), Error resilient simple scalable profile
ISO/IEC 29341-3-10:2008, Information technology – UPnP device architecture – Part 3-10:
Audio video device control protocol – Audio video transport service
ISO/IEC 29341-3-11:2008, Information technology – UPnP device architecture – Part 3-11:
Audio video device control protocol – Connection manager service

---------------------- Page: 9 ----------------------
– 8 – 62481-3 Ó IEC:2010(E)
ISO/IEC 29341-3-12:2008, Information technology – UPnP device architecture – Part 3-12:
Audio video device control protocol – Content directory service
DTCP Volume 1 (informational version), Digital transmission content protection specification
Volume 1, Revision 1.4: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp vol 1 1p4.pdf
DTCP Volume 1 Supplement E (informational version)
Mapping DTCP to IP, Revision 1.1: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp VISE 1p1.pdf
DTCP Audio Compliance Rules EXHIBIT B-2:
Compliance rules for licensedproducts that receive or transmit commercial audio works,
June 2002
http://www.dtcp.com/data/Compliance_Rules_Audio_020610.pdf
IEEE 802.1Q, IEEE standard for information technology – Telecommunications and
information exchange between systems – IEEE standard for local and metropolitan area
networks – Common specifications – Virtual Bridged Local Area Networks
IEEE 802.11, IEEE standard for information technology – Telecommunications and
information exchange between systems – Local and metropolitan area networks-specific
requirements – Part 11: Wireless LAN Medium, Access Control (MAC) and Physical Layer
(PHY) specifications
3 Terms, definitions and acronyms
For the purposes of this document, the following terms, definitions and acronyms apply.
3.1 Terms and definition
3.1.1
authentication and key exchange
AKE
step in a link protection system where the receiving device is authenticated and given the
correct keys for the content
3.1.2
advanced system format
ASF
media format encapsulation for the transmission of content
3.1.3
audio with video
AV
any media content that contains both moving picture and sound
3.1.4
AV transport
AVT
UPnP service that provides network-based control for common transport operations such as
play, stop, pause, next, previous, and seek, a standard UPnP DCP
3.1.5
cleartext
unencrypted content stream after decryption by the upstream content protection system and
before encryption by the link protection system

---------------------- Page: 10 ----------------------
62481-3 Ó IEC:2010(E) – 9 –
3.1.6
cleartext byte domain
specification of a byte position in the cleartext content stream for a complete explanation of
seek operations on link protected content, see Annex A
3.1.7
cleartext byte seek request header
used to signify any of those transport layer request headers; implies that the guideline applies
to all uses of any of the request headers
3.1.8
cleartext byte seek response header
used to signify any of those transport layer response headers; implies that the guideline
applies to all uses of any of the request headers
3.1.9
connection manager service
CMS
UPnP service that provides information about the supported transport protocols and media
formats of a UPnP device, a standard UPnP DCP
3.1.10
contributing source
CSRC
source used for the RTP media transport
3.1.11
decoder friendly aligment position
position in the bitstream defined for decoder friendly alignment; always the start of a media
format alignment element that can begin to process data without any other internal state
information about the stream so that the decoder can begin processing at that point and
create a valid output rendering
3.1.12
digital living network alliance
DLNA
organization that originally developed this standard
3.1.13
DLNA link protection
protection, using DLNA protocol elements as defined in these guidelines, of a content stream
between two devices on a DLNA network from illegitimate observation or interception
3.1.14
DLNA QoS user priority
DLNAQOS_UP
DLNA-defined QoS label used to correlate an underlying IEEE 802.1Q user priority and WMM
access category to a DLNA traffic type(s)
3.1.15
digital transmission content protection
DTCP
one of the link protection system
3.1.16
digital transmission content protection over IP networks
DTCP-IP
DTCP as applied IP based network

---------------------- Page: 11 ----------------------
– 10 – 62481-3 Ó IEC:2010(E)
3.1.17
group of pictures
GOP
defined grouping of information in the MPEG 2 media format
3.1.18
hyper text transfer protocol
HTTP
protocol for transferring files across the Internet
NOTE Requires an HTTP client program on one end, and an HTTP server program on the other end.
3.1.19
link protection alignment element
unit of content carried within a link protected content stream starts with a packet header that
is defined by the link protection system and contains bytes of the link protected stream
3.1.20
link protection
protection of a content stream between two devices on a DLNA network from illegitimate
observation or interception
3.1.21
link protection system
specific collection of technologies with corresponding rules that enable secure content
transfer between two endpoints
3.1.22
media format alignment element
unit of content carried within an unprotected content stream, starts at a decoder friendly
alignment position for the given media format and contains an integral number of units of
content as defined by the media format in use
3.1.23
multipurpose internet mail extension
MIME
standard system for identifying the type of data contained in a file
NOTE MIME is an Internet protocol that allows sending binary files across the Internet as attachments to e-mail
messages. This includes graphics, photos, sound, video files, and formatted text documents.
3.1.24
network byte domain
specification of a byte position in the content stream as it is carried on the network transport
NOTE For content binaries that use a link protection system, this will include encryption and any necessary
headers or padding required by the link protection system.
3.1.25
network connectivity – power saving
NC-PS
power saving modes of operations, as defined in IEC 62481-1
3.1.26
protected content packet
PCP
packet format for DTCP-IP link protected content, as defined in DTCP Volume 1 and DTCP
Volume 1 Supplement E

---------------------- Page: 12 ----------------------
62481-3 Ó IEC:2010(E) – 11 –
3.1.27
program stream
PS
content binary stream usually in reference to an MPEG-2 AV stream format
3.1.28
real time protocol
RTP
media transport that provides end-to-end network transport functions for transmitting real-time
data, such as AV
NOTE It provides services such as payload type identification, sequence numbering, time-stamping, and delivery
monitoring.
3.1.29
real time streaming protocol
RTSP
protocol within the RTP protocol suite
3.1.30
round trip time
RTT
time between sending a network packet to a remote host and
...

IEC 62481-3
®

Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection

Lignes directrices pour l'interopérabilité des dispositifs domestiques DLNA
(Digital Living Network Alliance) –
Partie 3: Protection des liaisons

IEC 62481-3:2010

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.


Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les
microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch

About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

Useful links:

IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].


A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:

Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].

---------------------- Page: 2 ----------------------
IEC 62481-3

®


Edition 1.0 2010-11




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Digital living network alliance (DLNA) home networked device interoperability

guidelines –

Part 3: Link protection




Lignes directrices pour l'interopérabilité des dispositifs domestiques DLNA

(Digital Living Network Alliance) –


Partie 3: Protection des liaisons













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX XB


ICS 33.100; 35.100.05; 35.110 ISBN 978-2-83220-366-8



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – 62481-3  IEC:2010
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative reference . 7
3 Terms, definitions and acronyms . 8
3.1 Terms and definition . 8
3.2 Abbreviation terms . 12
4 DLNA home network architecture . 13
5 DLNA device model . 13
6 Guideline terminology and conventions . 13
6.1 Guideline compliance classifiers . 13
6.2 Standard of specification usage classifiers . 13
6.3 Guideline font usage conventions . 14
6.4 Guideline syntax notation convention . 14
6.5 Guideline normative and informative text conventions . 15
6.6 DLNA XML namespaces and schemas . 15
7 Common link protection guidelines . 15
7.1 General . 15
7.2 Conditions for measuring time in message exchanges . 18
7.3 Networking and connectivity . 18
7.3.1 General . 18
7.3.2 New general capability requirements – Bluetooth NC CP – Power
saving modes . 18
7.4 Device discovery and control . 19
7.5 Media management . 19
7.5.1 Media management – AV media management . 19
7.5.2 AV media management guidelines . 22
7.6 Media transport . 25
7.6.1 General . 25
7.6.2 Media transport protocols . 25
7.6.3 HTTP transport . 27
7.6.4 HTTP media transport for streaming transfer guidelines . 34
7.6.5 HTTP media transport for interactive transfer guidelines . 34
7.6.6 RTP transport . 35
7.7 Content conversion device virtualization . 36
7.8 Media interoperability unit (MIU) . 36
7.9 Link protection technology guidelines requirements . 36
7.9.1 Link protection system – DTCP-IP . 36
7.9.2 Link protection system – Windows media DRM for network devices . 37
8 DTCP-IP link protection system guidelines . 37
8.1 General . 37
8.2 Networking and connectivity . 37
8.2.1 Networking and connectivity – General capability requirements . 37
8.2.2 New DLNAQOS requirements QoS requirement for DTCP-IP traffic . 38
8.2.3 New device requirements – Common NC CP – Wireless security . 38
8.3 Device discovery and control . 38
8.4 Media management . 38

---------------------- Page: 4 ----------------------
62481-3  IEC:2010 – 3 –
8.4.1 Media management – AV media management . 38
8.4.2 MM CP – DTCP-IP URI . 38
8.5 Media transport . 39
8.5.1 HTTP transport . 39
8.5.2 RTP transport . 40
8.6 Content conversion device virtualization . 42
8.7 Media interoperability unit (MIU) . 42
8.8 Media format – DTCP-IP profiling guidelines . 42
8.8.1 General . 42
8.8.2 CP DTCP-IP – Profile . 42
8.8.3 CP DTCP-IP – Profile MIME type definition. 43
8.8.4 CP DTCP-IP – Profile protected and unprotected content portions . 44
8.8.5 CP DTCP-IP – Profile HTTP encapsulation . 45
8.8.6 DTCP-IP profile encapsulation . 45
8.9 General requirements . 47
8.9.1 General . 47
8.9.2 CP DTCP-IP – Requirements . 47
9 WMDRM-ND link protection system guidelines . 47
9.1 General . 47
9.2 General requirements . 48
9.2.1 General . 48
9.2.2 CP WMDRM-ND – Requirements . 48
9.2.3 CP WMDRM-ND – Support for HTTP . 48
9.2.4 CP WMDRM-ND – Support for RTP . 48
9.2.5 CP WMDRM-ND – Registration and revalidation procedures . 49
9.2.6 CP WMDRM-ND – Discovery of content receivers . 49
9.3 Networking and connectivity . 50
9.3.1 Networking and connectivity – General capability requirements . 50
9.3.2 CP WMDRM-ND – QoS requirements . 50
9.4 Device discovery and control . 50
9.4.1 General . 50
9.4.2 CP WMDRM-ND – Additional rules for DMRs . 50
9.5 Media management . 50
9.6 Media transport . 51
9.6.1 HTTP transport . 51
9.6.2 RTP transport . 54
9.7 Content conversion device virtualization . 56
9.8 Media interoperability unit (MIU) . 56
9.9 Media format – WMDRM-ND profiling guidelines . 56
9.9.1 General . 56
9.9.2 CP WMDRM-ND – Identification of content transferred using
WMDRM-ND . 56
9.9.3 CP WMDRM-ND – Media format requirements . 57
9.9.4 CP WMDRM-ND – MIME type . 57
9.9.5 CP WMDRM-ND – Decoder friendly alignment position . 57
9.9.6 CP WMDRM-ND – Media format alignment element. 57
Annex A (informative) An introduction to DLNA seek operations . 58
Bibliography . 67

---------------------- Page: 5 ----------------------
– 4 – 62481-3  IEC:2010
Figure 1 – Guideline layout and definitions . 16
Figure 2 – Visual map of possible values for the attribute tables . 17
Figure A.1 – UCDAM definitions for seek operations . 59
Figure A.2 – Full random access data availability model . 60
Figure A.3 – Limited random access data availability model mode 0 . 62
Figure A.4 – Limited random access data availability mode 1. 63
Figure A.5 – Content flow unprotected content . 65
Figure A.6 – Content flow link protected content . 65

Table 1 – DLNA namespace values . 15
Table 2 – Allowed values for change indicator field in attribute table . 17
Table 3 – Normative priorities for dlna traffic types for link protection . 18
Table 4 – Summary of domain elements for full random access data availability mode. 20
Table 5 – Summary of domain elements for limited random access data availability
model . 21
Table 6 – AV media management guideline changes . 22
Table 7 – Recommended metadata properties . 23
Table 8 – Property type and multi value . 23
Table 9 – Updates to existing general media transport guidelines . 26
Table 10 – Updates to existing general HTTP media transport guidelines . 27
Table 11 – Updates to existing general HTTP media transport for streaming transfer
guidelines . 34
Table A.1 – DLNA constructs of full random access data availability mode . 61
Table A.2 – DLNA constructs of limited random access data availability model . 64

---------------------- Page: 6 ----------------------
62481-3  IEC:2010 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME
NETWORKED DEVICE INTEROPERABILITY GUIDELINES –

Part 3: Link protection


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62481-3 has been prepared by technical area 9: Audio, video and
multimedia applications for end-user network, of IEC technical committee 100: Audio, video
and multimedia systems and equipment.
This bilingual version (2012-11) corresponds to the monolingual English version, published in
2010-11.
The text of this standard is based on the following documents:
CDV Report on voting
100/1617/CDV 100/1739/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

---------------------- Page: 7 ----------------------
– 6 – 62481-3  IEC:2010
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62481 series, published under the general title Digital living
network alliance (DLNA) home networked device interoperability guidelines, can be found on
the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

---------------------- Page: 8 ----------------------
62481-3  IEC:2010 – 7 –
DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME
NETWORKED DEVICE INTEROPERABILITY GUIDELINES –

Part 3: Link protection



1 Scope
This part of IEC 62481 specifies the DLNA link protection guidelines, which are an extension
of the DLNA guidelines. DLNA link protection is defined as the protection of a content stream
between two devices on a DLNA network from illegitimate observation or interception using
the protocols defined within this standard.
Content protection is an important mechanism for ensuring that commercial content is
protected from piracy and illegitimate redistribution. Link protection is a technique that
enables distribution of protected commercial content on a home network, thus resulting in
greater consumer flexibility while still preserving the rights of copyright holders and content
providers.
The guidelines in this standard reference existing technologies for link protection and provide
mechanisms for interoperability between different implementations as well as integration with
the DLNA architecture.
This standard is organized to align with the overall structure of IEC 62481-1 and IEC 62481-2.
2 Normative reference
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 62481-1:2007, Digital living network alliance (DLNA) home networked device
interoperability guidelines – Part 1: Architecture and protocols
IEC 62481-2:2007, Digital living network alliance (DLNA) home networked device
interoperability guidelines – Part 2: DLNA media formats
ISO/IEC 13818-1:2007, Information technology – Generic coding of moving pictures and
associated audio information: Systems
ISO/IEC 13818-2:2007, Information technology – Generic coding of moving pictures and
associated audio information: Video
ISO/IEC 14496-2:2004 Information technology – Coding of audio-visual objects – Part 2:
Visual
Amendment 1 (2004), Error resilient simple scalable profile
ISO/IEC 29341-3-10:2008, Information technology – UPnP device architecture – Part 3-10:
Audio video device control protocol – Audio video transport service
ISO/IEC 29341-3-11:2008, Information technology – UPnP device architecture – Part 3-11:
Audio video device control protocol – Connection manager service

---------------------- Page: 9 ----------------------
– 8 – 62481-3  IEC:2010
ISO/IEC 29341-3-12:2008, Information technology – UPnP device architecture – Part 3-12:
Audio video device control protocol – Content directory service
DTCP Volume 1 (informational version), Digital transmission content protection specification
Volume 1, Revision 1.4: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp vol 1 1p4.pdf
DTCP Volume 1 Supplement E (informational version)
Mapping DTCP to IP, Revision 1.1: February 28, 2005
http://www.dtcp.com/data/info 20050228 dtcp VISE 1p1.pdf
DTCP Audio Compliance Rules EXHIBIT B-2:
Compliance rules for licensed products that receive or transmit commercial audio works,
June 2002
http://www.dtcp.com/data/Compliance_Rules_Audio_020610.pdf
IEEE 802.1Q, IEEE standard for information technology – Telecommunications and
information exchange between systems – IEEE standard for local and metropolitan area
networks – Common specifications – Virtual Bridged Local Area Networks
IEEE 802.11, IEEE standard for information technology – Telecommunications and
information exchange between systems – Local and metropolitan area networks-specific
requirements – Part 11: Wireless LAN Medium, Access Control (MAC) and Physical Layer
(PHY) specifications
3 Terms, definitions and acronyms
For the purposes of this document, the following terms, definitions and acronyms apply.
3.1 Terms and definition
3.1.1
authentication and key exchange
AKE
step in a link protection system where the receiving device is authenticated and given the
correct keys for the content
3.1.2
advanced system format
ASF
media format encapsulation for the transmission of content
3.1.3
audio with video
AV
any media content that contains both moving picture and sound
3.1.4
AV transport
AVT
UPnP service that provides network-based control for common transport operations such as
play, stop, pause, next, previous, and seek, a standard UPnP DCP
3.1.5
cleartext
unencrypted content stream after decryption by the upstream content protection system and
before encryption by the link protection system

---------------------- Page: 10 ----------------------
62481-3  IEC:2010 – 9 –
3.1.6
cleartext byte domain
specification of a byte position in the cleartext content stream for a complete explanation of
seek operations on link protected content, see Annex A
3.1.7
cleartext byte seek request header
used to signify any of those transport layer request headers; implies that the guideline applies
to all uses of any of the request headers
3.1.8
cleartext byte seek response header
used to signify any of those transport layer response headers; implies that the guideline
applies to all uses of any of the request headers
3.1.9
connection manager service
CMS
UPnP service that provides information about the supported transport protocols and media
formats of a UPnP device, a standard UPnP DCP
3.1.10
contributing source
CSRC
source used for the RTP media transport
3.1.11
decoder friendly aligment position
position in the bitstream defined for decoder friendly alignment; always the start of a media
format alignment element that can begin to process data without any other internal state
...