IEC 62455:2007

INTERNATIONAL IEC
STANDARD 62455
First edition
2007-06
Internet protocol (IP) and transport stream (TS)
based service access
Reference number
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INTERNATIONAL IEC
STANDARD 62455
First edition
2007-06
Internet protocol (IP) and transport stream (TS)
based service access
PRICE CODE
Commission Electrotechnique Internationale
XH
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 62455 © IEC:2007(E)
CONTENTS
FOREWORD.13

1 Scope.15

2 Normative references .15

3 Terms, definitions and abbreviations .17

3.1 Terms and definitions .17

3.2 Symbols .22

3.3 Abbreviations .23
3.4 Identifiers assigned by external entities.27
4 General .27
4.1 General description of the system and elements.28
4.1.1 Selected technologies .28
4.1.2 Overview of four-layer model for service protection .30
4.2 End-to-end system .32
4.3 Supported systems and device types.32
4.4 Service protection versus content protection .34
5 General specifications .35
5.1 End-to-end architecture.35
5.2 Special cases .37
5.2.1 Free-to-air services .37
5.2.2 Free-to-view services .37
5.3 Service guide and purchase .37
5.4 Four-layer model – Key hierarchy.38
5.4.1 Keys on the traffic layer.39
5.4.2 Keys on the key stream layer.39
5.4.3 Keys on the rights management layer (interactive mode) .41
5.4.4 Keys on the rights management layer (broadcast mode).42
5.4.5 Keys on the registration layer (interactive mode) .42
5.4.6 Keys on the registration layer (broadcast mode) .42
5.4.7 Authentication overview.45
5.5 Deployment for broadcast mode of operation.46
5.5.1 Concept of Domains –Interactive and broadcast domains .46

5.5.2 Addressing (group/subset/device/domain) .47
5.5.3 Zero message broadcast encryption scheme .49
6 Traffic layer .51
6.1 IPsec.52
6.1.1 General .52
6.1.2 Selectors .53
6.1.3 Encapsulation protocol and mode .53
6.1.4 Encryption algorithm.54
6.1.5 Authentication algorithm .54
6.1.6 Security association management .54
6.2 ISMACryp.54
6.2.1 Streamed content .54
6.2.2 Downloadable audio/visual content (stored in MP4 files).55
6.2.3 Use of ISMACryp with the rights management and key stream layers .56

62455 © IEC:2007(E) – 3 –
6.3 SRTP .56

6.3.1 Key management.58

6.3.2 Encryption algorithm.58

6.3.3 Authentication algorithm .59

6.4 MPEG2 TS crypt .59

6.4.1 General .59

6.4.2 Transport stream level scrambling .60

6.4.3 PES level scrambling.61

6.4.4 Descrambling MPEG2 content .61

6.4.5 Supported ciphers .62

6.4.6 Key management.63
7 Key stream layer .63
7.1 General .63
7.2 Format of the key stream message (KSM) .63
7.2.1 Descriptors for access_criteria_descriptor_loop.66
7.2.2 Constants .73
7.2.3 Coding and semantics of attributes.73
8 Rights management layer .81
8.1 General .81
8.1.1 Requirements for service ROs .82
8.1.2 Requirements for programme ROs.82
8.2 Format of rights objects.83
8.2.1 Format of an Interactivity channel rights object (ICRO) .83
8.2.2 Format of a broadcast rights object (BCRO) .83
9 Registration layer .98
9.1 RI context.98
9.2 Registration layer protocols and message specification .99
9.2.1 Interactivity channel registration layer specification .99
9.2.2 Broadcast channel registration layer specification .99
9.2.3 Domain joining and leaving.134
9.2.4 Token handling.149
9.2.5 Mixed-mode registration for interactive and broadcast modes of
operation .156
10 Signalling and service guide .157
10.1 Signalling requirements .157

10.1.1 Requirements for signalling the KSM .158
10.1.2 Requirements for signalling of services .158
10.2 Service guide requirements .158
10.3 Service guide recommendations.158
11 Rights issuer services and rights issuer streams .159
11.1 General .159
11.1.1 Requirements for rights issuer services in IPDC over DVB-H systems . 159
11.1.2 Requirements for rights issuer services in DVB-T/C/S systems. 159
11.1.3 Requirements for the support of rights issuer services and streams in
IPTV systems .160
11.2 Usage of rights issuer streams and services.160
11.2.1 Scheduled RI stream .161
11.2.2 Ad hoc RI stream.161
11.2.3 In-band RI streams within a media service. 161

– 4 – 62455 © IEC:2007(E)
12 Service subscription and purchase .162

12.1 Purchase over an interactivity channel .163

12.1.1 Typical purchase sequences.164

12.1.2 Protocol.187

12.1.3 XML schemas for request and response messages . 187

12.1.4 XML schema definition for request and response related XML

elements .202

12.2 Purchase for mixed-mode devices . 207

12.3 Out-of-band purchase.207

12.3.1 Means of purchase – Introduction.207

12.3.2 Out-of-band purchase from service guide data . 208
12.4 Required service guide Information .209
12.4.1 Service operation centre (including service distribution management) . 210
12.4.2 Customer operation centre (including service subscription
management) .210
12.4.3 Service .
...