WO2008015155A2 - Methode d'acces conditionnel local pour equipements mobiles - Google Patents
Methode d'acces conditionnel local pour equipements mobiles Download PDFInfo
- Publication number
- WO2008015155A2 WO2008015155A2 PCT/EP2007/057717 EP2007057717W WO2008015155A2 WO 2008015155 A2 WO2008015155 A2 WO 2008015155A2 EP 2007057717 W EP2007057717 W EP 2007057717W WO 2008015155 A2 WO2008015155 A2 WO 2008015155A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- identifier
- mobile
- access
- transmitter
- mobile equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/454—Content or additional data filtering, e.g. blocking advertisements
- H04N21/4542—Blocking scenes or portions of the received content, e.g. censoring scenes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2111—Location-sensitive, e.g. geographical location, GPS
Definitions
- the invention relates to the field of conditional access to a digital data stream broadcast over the air and received by a plurality of mobile devices, such as, for example, a mobile phone, a PDA (Personal Digital Assistant) personal assistant. , a portable digital television receiver, a laptop.
- mobile devices such as, for example, a mobile phone, a PDA (Personal Digital Assistant) personal assistant.
- PDA Personal Digital Assistant
- portable digital television receiver such as, for example, a portable digital television receiver, a laptop.
- the data broadcast is encrypted and can only be received in the clear by authorized equipment whose user has acquired the necessary rights.
- These rights stored in a security module associated with the mobile equipment, consist of a set of keys for decrypting control words contained in ECM (Entitlement Control Message) messages broadcast in the audio / video data stream. .
- ECM Entitlement Control Message
- a security module is a device deemed inviolable containing various encryption / decryption keys, information used to identify a user on a network and data that defines rights acquired by the user for receiving broadcast content.
- the security module can be in various forms such as a removable smart card inserted in a reader, an integrated circuit soldered to a motherboard, a SIM card (Subscriber Identity Module) that is found in most mobile equipment.
- This module can be realized in software form and be part of the software of the mobile equipment. Preferably, this software will be run in a particular area of memory to minimize intrusions from other software.
- OMA Open Mobile Alliance
- DVB-H Digital Video Broadcast, Handheld
- DMB Digital Multimedia Broadcasting
- DAB Digital Audio Broadcasting
- DVB technology has been designed to standardize digital set-top boxes in order to reduce their costs on a large scale. It normalizes the elements intervening at the level of the conditional access to the content diffused in the format MPEG-2 or MPEG-4 for the mobile television on Internet.
- These elements consist of the encryption algorithm of the broadcasted content, the ECM control messages containing the decryption keys or control words, the EMM administration messages containing the rights of the users and the interface between the decoder and the module. security that manages conditional access.
- DVB-H mobile TV the content protection is developed by DVB-CBMS (Digital Video Broadcasting - Convergence of Broadcast and Mobile Services).
- Standardization does not extend to the value-added content of the ECM and EMM messages, nor to the method of protection thereof.
- Each conditional access provider uses its own data structure and its own means of protection for the same broadcast content. DVB technology therefore offers many possibilities for developing content security.
- the object of the present invention is to be able to have the same restriction means in the mobile world as what is applied with fixed receivers.
- This goal is achieved by a method of conditional access to an encrypted digital data stream with at least one control word and broadcast via a transmitter of a broadcast network to at least one mobile device, this transmitter also transmitting a data stream.
- This method can be used to block access to mobile devices in a certain region (blackout) or on the contrary, to allow access only in this region (hot spot).
- the way to determine the location identifier can be based on the identifier of the mobile cell (mobile access point) or the identifier of the transmitter of the broadcast network.
- the broadcast network comprises a plurality of transmitters which, in addition to broadcasting the data stream, broadcast service data in which it is possible to identify the transmitter on which the mobile equipment is stalled.
- FIG. 1 illustrates a block diagram of an example configuration with two transmitters placed in separate locations and can be picked up by a local mobile device.
- FIG. 2 illustrates a schematized example of broadcasting zones of the transmitters of the broadcast network and the cells of the mobile network inside these broadcasting zones.
- a digital data stream forming a content (C) encrypted with control words (CW) are broadcast with ECM control messages.
- Such digital data may include audio / video data of television programs as well as data corresponding to applications that can be operated by mobile equipment.
- a server of a conditional access content provider is connected to a broadcast network (NET1).
- NET1 broadcast network
- This network diffuses by several antennas E1, E2 towards mobile equipments EM1, EM2. Depending on the location of the mobile equipment, the latter will connect instead to the antenna E1 that the antenna E2.
- the mobile equipment EM1, EM2 are connected to the mobile telecommunication network NET2 by appropriate antennas F1, F2.
- the mobile equipment can determine its geographical position.
- the identifier of the antenna is transmitted to the mobile equipment and thus serves as a location identifier. This identifier is used for example for measuring the reception quality of a network.
- This identifier as such does not necessarily give a geographical indication and can be a simple alphanumeric value.
- the broadcast transmitter sends with the stream of audio / video data, a flow of data control messages.
- the control message contains the control word or words used to decrypt the encrypted content and also contains the conditions of access to this content.
- the access conditions comprise, in addition to the rights required for the reception of the content (subscription for example), one or more antennas identifiers relating to the prohibition or reception authorization zone. These identifiers may relate to the NET1 broadcast network or to the NET2 mobile telecommunication network. It is also possible to include in the access conditions a joint list comprising one or more identifiers of the two networks.
- the identifiers of the mobile telecommunication network C1 to Cn are smaller, which makes it possible to better delimit the forbidden zone.
- the easiest way to do this is by identifying the few broadcast transmitters in that city.
- the security means of the equipment When a control message arrives on the mobile equipment, this message is transmitted to the security means of the equipment. These means can be either the SIM card of the mobile equipment, or a dedicated circuit (directly soldered on the printed circuit), or be made in the software form. These security means check whether the access conditions listed in the control message are fulfilled. These conditions can have several forms, such as a specific right to a content, a general right for a given channel or a payment system by time as described in WO03 / 085959. According to the invention, in addition to the conditions as described above, and provided that the reception of the content is limited according to the geographical location, the means of security check whether the location identifier obtained from the broadcast antenna or telecommunication is present in the list of identifiers included in the control message. If the location identifier is included in the list of identifier (s) transmitted in the access conditions, the security means may either return the control word to the decryption means (hot spot version) or otherwise block the transmission of the control word means decryption (black
- control message is encrypted so that a third party does not have access to identifiers used to restrict access to the audio / video data.
- location identifier can be signed in order to guarantee its integrity.
- the broadcast center (or telecommunication center according to the embodiment) uses its private key (of a pair of asymmetric keys) to sign the identifier.
- This signature is carried out conventionally for example by using a hashing method (Hash) of the identifier and result encryption by the private key.
- Hash hashing method
- the security module On receipt, the security module has the corresponding public key which allows it to decrypt the signature to obtain the value of assumed Hash and compare this value with that the security module has calculated on the location identifier. The comparison of the assumed value and the calculated value makes it possible, if they are equal, to ensure that the identifier has not been modified.
- the security module is pre-initialized by a default location value. This value is replaced by the current identifier as soon as it is communicated to the security module.
- a duration during which an identifier is valid. Once this validity is complete, and if no newer identifier has been transmitted to the security module, the default identifier is restored with the consequence of being considered as active at each blackout command.
- This duration can either be a parameter of the security module or be associated to the data of the identifier, for example with the signature.
- a current date is associated with the identifier, preferably signed with the identifier itself.
- an identifier collected previously in another cell can not be reused in another mobile equipment.
- the security module will refuse any identifier associated with a date prior to that of the previously transmitted identifier.
- the identifier contained in the control message may include a range of identifiers. If for example the identifiers of antennas in a city all start with ABC (ABCV120, ABCJ11 etc.), it is possible to send only the ABC prefix to encompass all ABCxxx antennas. Other possibilities may include a range such as ABC100 to ABC200.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Computing Systems (AREA)
- Technology Law (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT07787939T ATE539537T1 (de) | 2006-08-02 | 2007-07-26 | Lokales zugangsberechtigungsverfahren für mobilempfänger |
| BRPI0714096-7A BRPI0714096A2 (pt) | 2006-08-02 | 2007-07-26 | método de acesso condicional local em um dispositivo móvel |
| EP07787939A EP2052516B1 (fr) | 2006-08-02 | 2007-07-26 | Methode d'acces conditionnel local pour equipements mobiles |
| US12/375,832 US8737990B2 (en) | 2006-08-02 | 2007-07-26 | Method of local conditional access for mobile equipment |
| CN2007800287955A CN101496377B (zh) | 2006-08-02 | 2007-07-26 | 移动设备的本地条件访问方法 |
| ES07787939T ES2378404T3 (es) | 2006-08-02 | 2007-07-26 | Método de acceso condicional local para equipos móviles |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06118345.5 | 2006-08-02 | ||
| EP06118345A EP1885095A1 (fr) | 2006-08-02 | 2006-08-02 | Méthode d'accès conditionnel local pour équipements mobiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008015155A2 true WO2008015155A2 (fr) | 2008-02-07 |
| WO2008015155A3 WO2008015155A3 (fr) | 2008-04-03 |
Family
ID=37813629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/057717 Ceased WO2008015155A2 (fr) | 2006-08-02 | 2007-07-26 | Methode d'acces conditionnel local pour equipements mobiles |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8737990B2 (fr) |
| EP (2) | EP1885095A1 (fr) |
| CN (1) | CN101496377B (fr) |
| AT (1) | ATE539537T1 (fr) |
| BR (1) | BRPI0714096A2 (fr) |
| ES (1) | ES2378404T3 (fr) |
| RU (1) | RU2009107007A (fr) |
| WO (1) | WO2008015155A2 (fr) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1722564A1 (fr) * | 2005-05-13 | 2006-11-15 | Nagra France Sarl | Méthode d'accès conditionnel local pour équipements mobiles |
| US20110286356A1 (en) * | 2009-11-23 | 2011-11-24 | Qualcomm Incorporated | Broadcast control of access terminal radio event handling |
| US8909246B2 (en) | 2010-09-09 | 2014-12-09 | Syncbak, Inc. | Broadcast tuning concepts |
| US8910196B2 (en) * | 2012-01-30 | 2014-12-09 | Syncbak, Inc. | Broadcast area identification and content distribution |
| US9781129B1 (en) * | 2012-03-30 | 2017-10-03 | EMC IP Holding Company LLC | Authenticating an entity |
| US8966544B2 (en) | 2012-10-03 | 2015-02-24 | Synbank, Inc. | Providing and receiving wireless broadcasts |
| KR102170178B1 (ko) * | 2013-03-14 | 2020-10-26 | 삼성전자주식회사 | 모바일 액세스 포인트를 통한 외부 데이터 네트워크 사용 제어 방법 및 디바이스 |
| US9832502B1 (en) * | 2015-06-12 | 2017-11-28 | Amazon Technologies, Inc. | Streaming media authorization based on call signs |
| US9713070B1 (en) | 2016-08-18 | 2017-07-18 | Cisco Technology, Inc. | Regional conditional access |
| CN107979566A (zh) * | 2016-10-25 | 2018-05-01 | 北京计算机技术及应用研究所 | 一种双信道融合的应急视频加密传输设备 |
| US10812852B1 (en) * | 2019-05-06 | 2020-10-20 | Charter Communcations Operating, LLC | Method and apparatus for location based broadcast channel selection and update for mobile devices |
| KR20230046531A (ko) * | 2021-09-30 | 2023-04-06 | 삼성전자주식회사 | 전자 장치 및 이의 제어 방법 |
| US11974011B2 (en) * | 2022-03-23 | 2024-04-30 | Amazon Technologies, Inc. | Location restricted content streaming to non-location aware devices |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5016274A (en) | 1988-11-08 | 1991-05-14 | Silvio Micali | On-line/off-line digital signing |
| US6560340B1 (en) | 1995-04-03 | 2003-05-06 | Scientific-Atlanta, Inc. | Method and apparatus for geographically limiting service in a conditional access system |
| US6807534B1 (en) * | 1995-10-13 | 2004-10-19 | Trustees Of Dartmouth College | System and method for managing copyrighted electronic media |
| GB9717844D0 (en) | 1997-08-23 | 1997-10-29 | The Technology Partnership Plc | Improvements in,or relating to,digital cellular radio communication networks |
| US6463276B1 (en) * | 1997-12-05 | 2002-10-08 | Telefonaktiebolaget L M Ericsson (Publ) | Mobile terminal having conditional blocking of outgoing call requests |
| WO2001080191A1 (fr) * | 2000-04-17 | 2001-10-25 | Robert Kaplan | Procede et appareil pour transferer ou recevoir des donnees par internet de maniere sure |
| GB0012445D0 (en) | 2000-05-24 | 2000-07-12 | Hewlett Packard Co | Location-based equipment control |
| US7120254B2 (en) | 2000-10-30 | 2006-10-10 | Geocodex Llc | Cryptographic system and method for geolocking and securing digital information |
| US9032097B2 (en) * | 2001-04-26 | 2015-05-12 | Nokia Corporation | Data communication with remote network node |
| US7995603B2 (en) | 2001-05-22 | 2011-08-09 | Nds Limited | Secure digital content delivery system and method over a broadcast network |
| AU2002239177A1 (en) | 2002-02-08 | 2003-09-02 | Conax As | A secure locator device |
| US20030181160A1 (en) | 2002-03-21 | 2003-09-25 | Hirsch Andrew J. | Authentication and provisioning system for subscriber broadcasts |
| US7748045B2 (en) * | 2004-03-30 | 2010-06-29 | Michael Frederick Kenrich | Method and system for providing cryptographic document retention with off-line access |
| US7308703B2 (en) | 2002-12-18 | 2007-12-11 | Novell, Inc. | Protection of data accessible by a mobile device |
| US7703140B2 (en) * | 2003-09-30 | 2010-04-20 | Guardian Data Storage, Llc | Method and system for securing digital assets using process-driven security policies |
| EP1680887A4 (fr) * | 2003-10-16 | 2013-06-26 | Maxxian Technology Inc | Procede et systeme destines a detecter et prevenir une utilisation de signaux non autorisee dans un reseau de distribution de contenu |
| US20050234735A1 (en) * | 2003-11-26 | 2005-10-20 | Williams Jim C | Digital rights management using proximity testing |
| KR100847399B1 (ko) * | 2003-12-05 | 2008-07-18 | 모션 픽쳐 어쏘시에이션 오브 아메리카 | 삼각측정법에 의한 지리적 위치결정장치를 이용한 디지털저작권 관리 |
| US8086536B2 (en) | 2004-09-16 | 2011-12-27 | Microsoft Corporation | Location based licensing |
| US7644266B2 (en) * | 2004-09-23 | 2010-01-05 | International Business Machines Corporation | Apparatus, system, and method for message level security |
| US7383438B2 (en) * | 2004-12-18 | 2008-06-03 | Comcast Cable Holdings, Llc | System and method for secure conditional access download and reconfiguration |
| US7933410B2 (en) * | 2005-02-16 | 2011-04-26 | Comcast Cable Holdings, Llc | System and method for a variable key ladder |
| EP1722564A1 (fr) | 2005-05-13 | 2006-11-15 | Nagra France Sarl | Méthode d'accès conditionnel local pour équipements mobiles |
-
2006
- 2006-08-02 EP EP06118345A patent/EP1885095A1/fr not_active Withdrawn
-
2007
- 2007-07-26 RU RU2009107007/09A patent/RU2009107007A/ru not_active Application Discontinuation
- 2007-07-26 WO PCT/EP2007/057717 patent/WO2008015155A2/fr not_active Ceased
- 2007-07-26 AT AT07787939T patent/ATE539537T1/de active
- 2007-07-26 CN CN2007800287955A patent/CN101496377B/zh active Active
- 2007-07-26 EP EP07787939A patent/EP2052516B1/fr active Active
- 2007-07-26 ES ES07787939T patent/ES2378404T3/es active Active
- 2007-07-26 US US12/375,832 patent/US8737990B2/en active Active
- 2007-07-26 BR BRPI0714096-7A patent/BRPI0714096A2/pt not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1885095A1 (fr) | 2008-02-06 |
| RU2009107007A (ru) | 2010-09-10 |
| WO2008015155A3 (fr) | 2008-04-03 |
| CN101496377A (zh) | 2009-07-29 |
| EP2052516A2 (fr) | 2009-04-29 |
| ATE539537T1 (de) | 2012-01-15 |
| US8737990B2 (en) | 2014-05-27 |
| BRPI0714096A2 (pt) | 2013-01-01 |
| ES2378404T3 (es) | 2012-04-12 |
| US20090325576A1 (en) | 2009-12-31 |
| CN101496377B (zh) | 2012-07-04 |
| EP2052516B1 (fr) | 2011-12-28 |
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