IEC 62481-3:2017

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

IEC 62481-3:2017(E) 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 part of DLNA guidelines.
This third edition cancels and replaces the second edition published in 2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) editorial updates;
b) clarification for some of the guidelines that were ambiguous.

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 62481-3:2013 - 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 3.0 2017-07
INTERNATIONAL
STANDARD
colour
inside
Digital living network alliance (DLNA) home networked device interoperability
guidelines –
Part 3: Link protection
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IEC 62481-3 ®
Edition 3.0 2017-07
INTERNATIONAL
STANDARD
colour
inside
Digital living network alliance (DLNA) home networked device interoperability

guidelines –
Part 3: Link protection
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160; 35.100.05; 35.110 ISBN 978-2-8322-4541-5

– 2 – IEC 62481-3:2017 © IEC 2017

CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, abbreviated terms and conventions . 9
3.1 Terms and definitions . 9
3.3 Conventions . 14
4 DLNA home network architecture . 14
5 DLNA device model . 15
6 Guideline terminology and conventions . 15
7 Common Link Protection guidelines . 15
7.1 General . 15
7.2 Conditions for measuring time in message exchanges . 15
7.3 Networking and connectivity . 15
7.4 Device discovery and control . 15
7.5 Media management. 15
7.5.1 General . 15
7.5.2 Updates to existing general AV Media Management guidelines . 18
7.5.3 New general AV Media Management guidelines . 18
7.5.4 MediaRenderer device guidelines . 22
7.6 Media Transport . 22
7.6.1 General . 22
7.6.2 Updates to existing general Media Transport guidelines . 23
7.6.3 New general Media Transport guidelines . 23
7.6.4 HTTP transport . 24
7.6.5 Updates to existing general HTTP Media Transport guidelines . 24
7.6.6 New general HTTP Media Transport guidelines . 29
7.6.7 Updates to existing general HTTP Media Transport for Streaming
Transfer guidelines . 33
7.6.8 MT RANGE behaviour for Interactive Transferred Content . 37
7.6.9 RTP transport . 37
7.6.10 Update existing general RTP Transport guidelines . 37
7.6.11 New general RTP Transport guidelines: MT: RTP support for link
protected content . 38
7.7 Content conversion device virtualization . 38
7.8 Link Protection technology guidelines . 38
7.8.1 Link Protection System: DTCP-IP . 38
7.8.2 Link Protection System: Windows Media DRM for network Devices . 40
8 DTCP-IP Link Protection System guidelines . 41
8.1 General . 41
8.2 CP DTCP-IP general guidelines . 41
8.3 Networking and connectivity . 41
8.3.1 General . 41
8.3.2 New DLNAQOS guidelines: QoS requirement for DTCP-IP traffic . 41
8.3.3 New common device guidelines: NC CP: wireless security . 42
8.4 Device discovery and control . 42

8.5 Media Management. 42
8.5.1 General . 42
8.5.2 MM CP: DTCP-IP URI . 42
8.5.3 MM CP: mandatory media operations . 43
8.6 Media Transport . 43
8.6.1 HTTP transport . 43
8.6.2 RTP transport . 47
8.7 Content conversion device virtualization . 49
8.8 Volume 2: DTCP-IP profiling guidelines . 49
8.8.1 General . 49
8.8.2 CP DTCP-IP: profile. 49
8.8.3 CP DTCP-IP: profile MIME type definition . 50
8.8.4 CP DTCP-IP: profile protected and unprotected content portions . 51
8.8.5 CP DTCP-IP: profile HTTP encapsulation . 52
8.8.6 DTCP-IP profile encapsulation . 52
9 WMDRM-ND Link Protection System guidelines . 55
9.1 Overview. 55
9.2 General guidelines . 55
9.2.1 CP WMDRM-ND: guidelines . 55
9.2.2 CP WMDRM-ND: support for HTTP. 55
9.2.3 CP WMDRM-ND: support for RTP . 56
9.2.4 CP WMDRM-ND: Registration and Revalidation procedures . 57
9.2.5 CP WMDRM-ND: discovery of Content Receivers . 58
9.3 Networking and connectivity . 58
9.3.1 General . 58
9.3.2 CP WMDRM-ND: QoS guidelines . 58
9.4 Device discovery and control . 58
9.4.1 General . 58
9.4.2 CP WMDRM-ND: additional rules for DMRs . 59
9.5 Media management. 59
9.6 Media Transport . 59
9.6.1 HTTP transport . 59
9.6.2 RTP transport . 64
9.7 Content conversion device virtualization . 67
9.8 Volume 2: WMDRM-ND profiling guidelines . 68
9.8.1 General . 68
9.8.2 CP WMDRM-ND: identification of content transferred using WMDRM-ND
9.8.3 CP WMDRM-ND: Media Format guidelines . 68
9.8.4 CP WMDRM-ND: MIME type . 69
9.8.5 CP WMDRM-ND: Decoder Friendly Alignment Position . 69
9.8.6 CP WMDRM-ND: Media Format Alignment Element . 69
Annex A (informative) An introduction to DLNA seek operations . 70
A.1 General . 70
A.2 UCDAM and seek operations . 70
A.3 Seek models . 71
A.4 Full Random Access Data Availability . 71
A.5 Limited Random Access Data Availability . 73
A.6 Seek operations on link protected content . 76

– 4 – IEC 62481-3:2017 © IEC 2017

Figure A.1 – UCDAM definitions for seek operations . 71
Figure A.2 – Full Random Access Data Availability model . 72
Figure A.3 – Limited Random Access Data Availability model Mode 0 . 74
Figure A.4 – Limited random access data availability model mode 1 . 75
Figure A.5 – Content flow
...