IEC 62481-4:2017

Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 4: DRM interoperability solutions

IEC 62481-4:2017(E) specifies DLNA guidelines for DRM Interoperability Solutions (DIS), which are defined as methods to enable the secure transfer and use of protected commercial content between different implementations on network media devices. This content could be protected by different content protection technologies. In this document, they are referred to as DRMs.
This second edition cancels and replaces the first edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) removal of references to Mobile Digital Media Uploader (M-DMU);
b) removal of references to Mobile Digital Media Downloader (M-DMD).

General Information

• Status: Published
• Publication Date: 26-Jul-2017
• ICS: 33.160 - Audio, video and audiovisual engineering
• ICS: 35.100.05 - Multilayer applications
• ICS: 35.110 - Networking
• Technical Committee: TA 18 - Multimedia home systems and applications for end-user networks
• Current Stage: PPUB - Publication issued
• Start Date: 04-Aug-2017
• Completion Date: 27-Jul-2017

Relations

• Revises: IEC 62481-4:2014 - Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 4: DRM interoperability solutions
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62481-4 ®
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 4: DRM interoperability solutions
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IEC 62481-4 ®
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
Digital living network alliance (DLNA) home networked device interoperability

guidelines –
Part 4: DRM interoperability solutions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160; 35.100.05; 35.110 ISBN 978-2-8322-4544-6

– 2 – IEC 62481-4:2017 © IEC 2017

CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and conventions . 6
3.1 Terms and definitions . 7
3.2 Conventions . 7
4 Networking architecture, device models and guideline conventions . 7
4.1 DLNA home networking architecture . 7
4.2 DLNA device model . 7
4.3 Guideline terminology and conventions . 8
5 Guideline requirements . 8
5.1 General . 8
5.2 Common DRM interoperability guidelines . 8
5.2.1 General . 8
5.2.2 Media management – MM/CP additional MM flags-param (flags
parameter) . 8
5.2.3 DRM interoperability technology guidelines requirements – DTCP-IP DIS
support . 8
5.3 DTCP-IP DIS guidelines . 9
5.3.1 General . 9
5.3.2 Media management . 9
5.3.3 Media Transport . 11
5.3.4 DTCP profiling guidelines . 15
5.3.5 DTCP-IP DIS requirements . 16
Annex A (informative) DTCP-IP DIS behaviour explanations . 21
A.1 Overview of DTCP-IP DIS behaviour . 21
A.2 Example of DTCP-IP DIS sequences . 21
A.2.1 General . 21
A.2.2 Download Copy sequence . 22
A.2.3 Download Move sequence . 22
A.2.4 Upload Copy sequence . 23
A.2.5 Upload Move sequence . 25

Figure A.1 – Overview of DTCP-IP DIS behaviour . 21
Figure A.2 – Example of Download Copy sequence . 22
Figure A.3 – Example of Download Move sequence . 23
Figure A.4 – Example of Upload Copy sequence . 24
Figure A.5 – Example of Upload Move sequence . 26

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME NETWORKED
DEVICE INTEROPERABILITY GUIDELINES –

Part 4: DRM interoperability solutions

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
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62481-4 has been prepared under technical area 8: Multimedia
home systems and applications for end-user network, of IEC technical committee 100: Audio,
video and multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) removal of references to Mobile Digital Media Uploader (M-DMU);
b) removal of references to Mobile Digital Media Downloader (M-DMD).

– 4 – IEC 62481-4:2017 © IEC 2017
The text of this International Standard is based on the following documents:
CDV Report on voting
100/2733/CDV 100/2883/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of 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 document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

INTRODUCTION
Consumers are acquiring, viewing, and managing an increasing amount of digital media (photos,
music, and video) on devices in the consumer electronics (CE), mobile, and personal computer
(PC) domains. As such, they want to conveniently enjoy the content, regardless of the source,
across different devices and locations in the home. The digital home vision integrates the
Internet, mobile, and broadcast networks through a seamless, interoperable network, which will
provide a unique opportunity for manufacturers and consumers alike. In order to cater for this
need, a common set of industry design guidelines is needed that allows vendors to participate in
a growing marketplace, leading to more innovation, simplicity, and value for consumers. This
document serves that purpose and provides vendors with the information needed to build
interoperable networked platforms and devices for the digital home.

– 6 – IEC 62481-4:2017 © IEC 2017
DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME NETWORKED
DEVICE INTEROPERABILITY GUIDELINES –

Part 4: DRM interoperability solutions (DIS)

1 Scope
This part of IEC 62481, the DLNA guidelines, specifies DLNA guidelines for DRM
Interoperability Solutions (DIS), which are defined as methods to enable the secure transfer and
use of protected commercial content between different implementations on network media
devices. This content could be protected by different content protection technologies. In this
document, they are referred to as DRMs.
The guidelines are not intended to replace or disable other interoperability mechanisms that
could already be in place, for example DLNA Link Protection guidelines stated in
IEC 62481-3:2017 or mechanisms provided by underlying DRMs.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 62481-1-1:2017, Digital living network alliance (DLNA) home networked device
interoperability guidelines – Part 1-1: Architecture and protocols
IEC 62481-3:2017, Digital living network alliance (DLNA) home networked device
interoperability guidelines – Part 3: Link protection
ISO/IEC 29341-3-12, Information technology – UPnP Device Architecture – Part 3-12: Audio
Video Device Control Protocol – Content Directory Service
DTCP Volume 1:2007 (informational version), Digital Transmission Content Protection
Specification Volume 1
http://www.dtcp.com/specifications.aspx
DTCP Volume 1 Supplement E:2007 (Informational Version), Mapping DTCP to IP
http://www.dtcp.com/specifications.aspx
DTCP Adopter Agreement, Digital Transmission Content Protection License Agreement, DTLA
http://www.dtcp.com/
3 Terms, definitions and conventions
For the purposes of this document, the terms and definitions given in IEC 62481-1-1:2017 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/

• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Terms and definitions
3.1.1
Copy
propagating content from a source device to a destination device such that the source device
maintains its original version of this content
3.1.2
Move
propagating content from a source device to a destination device such that the source device no
longer maintains a usable copy of this content
3.1.3
DIS
DRM Interoperability System
means for content to be protected by DRM A on one device to be transformed to the same
content protected by DRM B on another device
3.1.4
DRM
Digital Rights Management
system for protecting the copyrights of electronic digital media
3.1.5
DTCP-IP DIS
Digital Transmission Content Protection over Internet Protocol Digital Rights Management
Interoperability System
Note 1 to entry: DIS implemented according to the DTCP-IP specification.
3.2 Conventions
In IEC 62481-1-1:2017 and this document, a number of terms, conditions, mechanisms,
sequences, parameters, events, states, or similar terms are printed with the first letter of each
word in uppercase and the rest in lowercase (e.g., Move). Any lowercase uses of these words
have the normal technical English meanings.
4 Networking architecture, device models and guideline conventions
4.1 DLNA home networking architecture
See Clause 4 of IEC 62481-1-1:2017 for a full description of the DLNA home networking
architecture.
4.2 DLNA device model
See Clause 5 of IEC 62481-1-1:2017 for a full description of the DLNA device model. This
document extends the existing DLNA Device Classes and Device Capabilities to include
protected content used for the following system usages:
• Upload system usage;
• Download system usage;
• Upload Synchronization system usage;
• Download Synchronization system usage.

– 8 – IEC 62481-4:2017 © IEC 2017
4.3 Guideline terminology and conventions
See Clause 6 of IEC 62481-1-1:2017 for a full description of the DLNA document conventions.
5 Guideline requirements
5.1 General
See 7.1 of IEC 62481-1-1:2017, for guideline and attribute table layout descriptions.
5.2 Common DRM interoperability guidelines
5.2.1 General
This document defines the usage guidance for the DTCP-IP DLNA DIS technology. For
convenience, the term "DTCP-IP DIS" is used to mean the DTCP-IP technology for a DLNA DIS.
DTCP-IP DIS provides Copy and Move functionality by means of the transcription
interoperability scenario. DTCP-IP DIS supports the Upload system usage, Download system
usage, Upload Synchronization system usage, and Download Synchronization system usage.
5.2.2 Media management – MM/CP additional MM flags-param (flags parameter)
[GUIDELINE] The primary-flags token as defined in 10.1.3.24.2 (GUN 3WJUU) of
IEC 62481-1-1:2017, are extended for DLNA DIS with additional bit mappings. The additional bit
mappings of primary-flags for DLNA DIS shall be as follows.
• Bit 31 to Bit 14 are as defined in 10.1.3.24.2 (GUN 3WJUU) of IEC 62481-1-1:2017.
• Bit 13: DIS-DTCP-copy flag (DTCP-IP DIS Copy flag)
– applies only to the HTTP Media Transport;
– if the flags-param is omitted then this flag shall have an inferred value of false;
– see guidelines 5.3.2.2.2 and 5.3.2.2.3 for more information.
• Bit 12: DIS-DTCP-move flag (DTCP-IP DIS Move flag)
– applies only to the HTTP Media Transport;
– if the flags-param is omitted then this flag shall have an inferred value of false;
– see guidelines 5.3.2.3.2 and 5.3.2.3.3 for more information.
All other bits in primary-flags are reserved for future use and shall have a value of false.
[ATTRIBUTES]
M A DMS DMP DMC DMR M-DMS M-DMP n/a IEC 62481-1-1: N3J8N A
+DN+ +UP+ +PU+ M-DMC 2017
+UPSYNC+ +DNSYNC+
5.2.3 DRM interoperability technology guidelines requirements – DTCP-IP DIS support
5.2.3.1
[GUIDELINE] A UPnP AV MediaServer or UPnP AV MediaServer control point may implement
DTCP-IP DIS.
[ATTRIBUTES]
O A M-DMS n/a n/a BI2KZ A
DMS +DN+ +UP+
+UPSYNC+ +DNSYNC+
[COMMENT] Implementation of the DTCP-IP DIS guidelines is optional in DLNA.
5.2.3.2
[GUIDELINE] If a UPnP AV MediaServer or UPnP AV MediaServer control point implements the
DTCP-IP DIS, then it shall conform to all of the guidelines as defined in 5.3.
[ATTRIBUTES]
M A M-DMS n/a n/a NYTO8 A
DMS +DN+ +UP+
+UPSYNC+ +DNSYNC+
5.3 DTCP-IP DIS guidelines
5.3.1 General
This subclause contains the guidelines that are specific to the DTCP-IP DIS. Annex A provides
the high level description on how the DTCP-IP DIS works in DLNA and some examples of
DTCP-IP DIS sequence to enable a better understanding of this subclause.
5.3.2 Media management
5.3.2.1 MM/CP res@dtcp:uploadInfo property
[GUIDELINE] If a UPnP AV MediaServer control point attempts to upload content using the
DTCP-IP Move Protocol, as specified in V1SE.8.4 of DTCP Volume 1 Supplement E:2007, then
it shall provide a res@dtcp:uploadInfo property with a value whose bits 31 and 30 are set to one,
as defined in V1SE.10.5.2 of DTCP Volume 1 Supplement E:2007 with the CDS:CreateObject
request.
[ATTRIBUTES]
M A +UP+ +UPSYNC+ n/a n/a ISO/IEC JE3NY A
29341-3-12
DTCP
Volume 1:2007
DTCP Volume 1
Supplement
E:2007
[COMMENT] The use of the res@dtcp:uploadInfo property is recommended (optional) in DTCP
Volume 1 Supplement E:2007, but in order to provide interoperability this is mandated by this
guideline.
5.3.2.2 MM/CP DIS DTCP-copy-flag (DTCP-IP DIS Copy flag)
5.3.2.2.1
[GUIDELINE] The flag is set in accordance with usage rule (Copy Control Information)
associated with the content binary and DTCP compliance rules in DTCP Adopter Agreement.

– 10 – IEC 62481-4:2017 © IEC 2017
In the case of Upload system usage, this flag can be returned in the CMS:GetProtocolInfo
response, but Upload Controller or +UPSYNC+ cannot rely on this flag to check on availability of
DTCP-IP DIS Copy function on the Receiving Endpoint.
5.3.2.2.2
[GUIDELINE] If a UPnP AV MediaServer exposes a content binary that is available for Copy
using DTCP-IP DIS, then the DIS-DTCP-copy flag in Guideline 5.2.2 of this content item’s
res@protocolInfo property shall be set to true.
[ATTRIBUTES]
M A DMS M-DMS n/a IEC 62481-1-1: K6IWN
ISO/IEC
29341-3-12
5.3.2.2.3
[GUIDELINE] If a UPnP AV MediaServer exposes a content binary that is not available for Copy
using DTCP-IP DIS, then the DIS-DTCP-copy flag in Guideline 5.2.2 of this content item’s
res@protocolInfo property shall be set to false.
[ATTRIBUTES]
M A DMS M-DMS n/a IEC 62481-1-1: 2CC5J
ISO/IEC
29341-3-12
5.3.2.3 MM/CP DIS-DTCPmove flag (DTCP-IP DIS Move flag)
5.3.2.3.1
[GENERAL] This flag is set in accordance with usage rule (copy control information)
associated with the content binary and DTCP COMPLIANCE RULES in DTCP Adopter
Agreement.
This flag needs to be consistent with the DTCP-IP content flags (DTCP.COM_FLAGS) defined in
V1SE.10.5.1 of DTCP Volume 1 Supplement E:2007 if DTCP.COM_FLAGS is included as an
th
other-param of 4 field in res@protocolInfo property. For example, if the UPnP AV mediaserver
sets the DIS-DTCP-move flag in the DLNA.ORG_FLAGS to true and use DTCP.COM_FLAGS
for Move capability, then the bits 31 and 30 of the DTCP.COM_FLAGS shall to be set to one.
In the case of Upload system usage, this flag can be returned in the CMS:GetProtocolInfo
response, but Upload Controller or +UPSYNC+ cannot rely on this flag to check on availability of
DTCP-IP DIS Move function on the Receiving Endpoint.
5.3.2.3.2
[GUIDELINE] If a UPnP AV MediaServer exposes a content binary that is movable using TCP-IP
DIS with DTCP-IP Move Protocol defined in V1SE.8.4 of DTCP Volume 1 Supplement E:2007,
then the DIS-DTCP-move flag in Guideline 5.2.2 of this content item’s res@protocolInfo property
shall be set to true.
[ATTRIBUTES]
M A DMS M-DMS n/a IEC 62481-1-1:2 LIJAN
ISO/IEC
29341-3-12
DTCP Volume 1
Supplement
E:2007
5.3.2.3.3
[GUIDELINE] If a UPnP AV MediaServer exposes a content binary that is not movable using
DTCP-IP DIS with DTCP-IP Move Protocol defined in V1SE.8.4 of DTCP Volume 1 Supplement
E:2007, then the DIS-DTCP-move flag in Guideline 5.2.2 of this content item’s res@protocolInfo
property shall be set to false.
[ATTRIBUTES]
M A DMS M-DMS n/a IEC 62481-1-1:2 LLDMQ
ISO/IEC
29341-3-12
DTCP Volume 1
Supplement
E:2007
5.3.2.4 MM/CP CDS item deletion for moved content
[GUIDELINE] A UPnP AV MediaServer shall destroy the CDS item which represents the content
deleted or rendered unusable in the consequence of DTCP-IP Move operation within 30 s of a
successful DTCP-IP Move transaction.
[ATTRIBUTES]
M A DMS M-DMS n/a ISO/IEC QJH3A
29341-3-12
DTCP
Volume 1:2007
DTCP Volume 1
Supplement
E:2007
5.3.3 Media Transport
5.3.3.1 MT/CP HTTP header: content type (DTCP socket information)
[GUIDELINE] If an HTTP Client Endpoint attempts to upload content using DTCP-IP DIS, then it
shall provide DTCP Socket information in the Content-Type HTTP header field in an HTTP
POST request.
[ATTRIBUTES]
M C +UP+ +UPSYNC + n/a n/a IEC 62481-1-1:2 YPGP3 A
DTCP Volume 1
Supplement
E:2007
[COMMENT] This guideline specifies the use of content type header with the MIME-type that
includes DTCP Socket information in Upload system usage and Upload Synchronization system
usage.
– 12 – IEC 62481-4:2017 © IEC 2017
5.3.3.2 MT/CP HTTP header: BLKMove.dtcp.com
5.3.3.2.1
[GUIDELINE] If an HTTP Server Endpoint receives an HTTP POST request without the message
body to the res@importUri property value, which specifies that the content will be received using
the DTCP-IP Move protocol, then the endpoint shall include the BLKMove.dtcp.com HTTP
header as specified in V1SE.10.4 of DTCP Volume 1 Supplement E:2007 when it returns the
HTTP status code of 100 (Continue) in the HTTP POST response.
[ATTRIBUTES]
M A DMS M-DMS n/a ISO/IEC K5659
29341-3-12
DTCP Volume 1
Supplement
E:2007
[COMMENT] The use of BLKMove.dtcp.com HTTP header is recommended (optional) in the
DTCP-IP specification DTCP Volume 1 Supplement E:2007, but in order to provide
interoperability this is mandated by this guideline. The res@importUri property value is created
by the UPnP AV MediaServer when a CDS:CreateObject request was made and returned to the
control point in the response
...