WO2002011323A2 - Verfahren zur adressierung von endgeräten - Google Patents
Verfahren zur adressierung von endgeräten Download PDFInfo
- Publication number
- WO2002011323A2 WO2002011323A2 PCT/EP2001/007853 EP0107853W WO0211323A2 WO 2002011323 A2 WO2002011323 A2 WO 2002011323A2 EP 0107853 W EP0107853 W EP 0107853W WO 0211323 A2 WO0211323 A2 WO 0211323A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- binary
- terminals
- terminal
- vector
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
-
- 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
- H04N21/4508—Management of client data or end-user data
- H04N21/4516—Management of client data or end-user data involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available
-
- 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
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6402—Address allocation for clients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/70—Aspects of broadcast communication characterised in that receivers can be addressed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
Definitions
- the invention relates to a method for addressing terminals for receiving television programs that are subject to a fee, the terminals being divided into groups each having a group address, and each of the terminals being assigned to an identifier within the group.
- Terminals for receiving the fee-based programs are known as so-called set-top boxes or decoders. However, other end devices are also possible, such as PC cards or PCMCIA modules. Suitable terminals can also be integrated in the television receiver.
- Chip cards are usually used as security modules, which are not permanently connected to the end device, but can also be removed from it. This allows one and that the same end device can be used by different users with an individual security module. In connection with the present invention, however, the terminal device itself is considered as the terminal device together with the security module that is used in each case.
- DVB digital video broadcasting
- other algorithms have also become known.
- ECM Entitlement Control Messages
- EMM Entitlement Management Messages
- ADSL terrestrial broadcasting
- EMMs can be addressed to individual customers or to groups of customers.
- EMMs usually contain an SK service key in encrypted form. This service key is required to encrypt the control words in the ECMs undo.
- EMMs can - if necessary partially - be encrypted or unencrypted, but are protected against manipulation with a cryptographic checksum (MAC).
- MAC cryptographic checksum
- Each group is given a group address and each customer is assigned an identifier by a position within the group. This position is given to the group address as a bitmap of size 256. If bit i in the bitmap is set to 1, this means that the EMM affects the customer who occupies position i in the group. A 0 means that the EMM does not affect the terminal with the respective position. Any subsets 1 to 256 of the group can thus be addressed.
- the object of the present invention is to make the addressing of the end devices more secure.
- the computing effort, in particular in the terminal or in the security module, should be as low as possible, since there may be a large number of incoming EMMs to be checked there.
- This object is achieved in that the identifier is a binary vector, that the group address and a data word are sent to address terminals of a group and that the data word is formed by logically combining the binary vectors with a further binary vector, which describes, which of the group's end devices are to be addressed.
- the linkage is carried out by forming a binary matrix from the binary vectors and by multiplying the binary matrix by the further vector. It is preferably provided that the further binary vector contains a binary position for each terminal in the group, which is set to a predetermined value when the terminal is to be addressed.
- the data word according to the invention is preferably evaluated in that the
- Terminal stored binary vector assigned to the terminal is multiplied by the transmitted data word and that the addressing is considered to have been made if this multiplication results in a predetermined binary value.
- 1 is a flow chart to illustrate the method steps carried out by the transmitter, 2 shows a flowchart to explain the method steps on the terminal side;
- Fig. 4 shows the formation of the data word to be transmitted
- Fig. 5 the evaluation of the transmitted data word.
- FIGS. 1 and 2 represent parts of programs which run on the transmitter side and in the security module or terminal, insofar as they relate to the method according to the invention.
- the vector u is read in, which indicates to which end devices an EMM is to be sent.
- the vector u read represents a one-line matrix which is transformed into the matrix u at 2.
- step 3 a matrix is read in, the rows of which each represent a binary vector of length k assigned to a terminal. Multiplying the inverted matrix A -1 by the matrix uT results in the data word x to be transmitted. This is added to 4 of the EMM to be transmitted. At 5, the EMM including the data word x is transmitted to the end devices via the respective medium. The program is then ended at 6 or repeated for addressing further end devices.
- an EMM is recognized in the incoming data stream in the terminal and from this the data word is identified at 9 x separated.
- the data word x is then multiplied by the stored individual vector vi of the terminal i.
- the binary vectors v to v 5 of five terminals each form a row of a matrix A. This matrix is inverted and as
- the matrix A -1 according to FIG. 4 is multiplied by the matrix uT, which means that the first, the second and the fifth terminal of this group are to be addressed. Multiplication creates another matrix x, which is added to the EMM as a data word.
- FIG. 5 shows the test of the data word in the receiver using the same numerical example for the receiver whose binary vector is vj_. This vector stored in the security module is multiplied by the matrix x, which results in a 1 in the example shown.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Television Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001289632A AU2001289632A1 (en) | 2000-08-02 | 2001-07-09 | Method for addressing terminals |
US10/333,381 US7164766B2 (en) | 2000-08-02 | 2001-07-09 | Method for addressing terminals |
EP01969353A EP1314314A2 (de) | 2000-08-02 | 2001-07-09 | Verfahren zur adressierung von endgeräten |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10037630A DE10037630B4 (de) | 2000-08-02 | 2000-08-02 | Verfahren zur Adressierung von Endgeräten |
DE10037630.4 | 2000-08-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002011323A2 true WO2002011323A2 (de) | 2002-02-07 |
WO2002011323A3 WO2002011323A3 (de) | 2003-03-13 |
Family
ID=7651063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/007853 WO2002011323A2 (de) | 2000-08-02 | 2001-07-09 | Verfahren zur adressierung von endgeräten |
Country Status (5)
Country | Link |
---|---|
US (1) | US7164766B2 (de) |
EP (1) | EP1314314A2 (de) |
AU (1) | AU2001289632A1 (de) |
DE (1) | DE10037630B4 (de) |
WO (1) | WO2002011323A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1545130A1 (de) * | 2003-12-16 | 2005-06-22 | Nagravision S.A. | Verfahren zum Aktualisieren von Zugriffsrechten auf Daten mit bedingtem Zugriff |
CN100525434C (zh) * | 2005-12-31 | 2009-08-05 | 华为技术有限公司 | 一种在数字电视条件接收系统中对用户授权的方法 |
US20090165074A1 (en) * | 2007-12-21 | 2009-06-25 | General Instrument Corporation | Multi-Address Message Addressing |
EP2334069A1 (de) * | 2009-12-11 | 2011-06-15 | Irdeto Access B.V. | Bereitstellung von Steuerwörtern an einen Empfänger |
US10250514B2 (en) | 2014-02-06 | 2019-04-02 | Quiet Coach Inc. | Systems, methods, and devices for addressed data communications |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0866613A1 (de) * | 1997-03-21 | 1998-09-23 | CANAL+ Société Anonyme | Vorrichtung und Verfahren zur Verhinderung betrügerischen Zugangs zu einem System mit bedingtem Zugang |
WO1998043425A1 (en) * | 1997-03-21 | 1998-10-01 | Canal+ Societe Anonyme | Smartcard for use with a receiver of encrypted broadcast signals, and receiver |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE500950C2 (sv) * | 1993-02-18 | 1994-10-03 | Info Dev & Patent Ab | Förfarande vid informationsöverföring samt anordning för genomförande av förfarandet |
US5539822A (en) * | 1994-04-19 | 1996-07-23 | Scientific-Atlanta, Inc. | System and method for subscriber interactivity in a television system |
US5657470A (en) * | 1994-11-09 | 1997-08-12 | Ybm Technologies, Inc. | Personal computer hard disk protection system |
JPH096706A (ja) * | 1995-06-22 | 1997-01-10 | Hitachi Ltd | 疎結合計算機システム |
US6052781A (en) * | 1997-02-21 | 2000-04-18 | Savvy Frontiers Property Trust | Multiple user computer including anti-concurrent user-class based disjunctive separation of plural hard drive operation |
ZA973614B (en) * | 1997-03-21 | 1998-03-23 | Canal Plus Sa | Broadcast and reception system, and receiver/decoder and remote controller thereof. |
US7515712B2 (en) * | 1997-08-01 | 2009-04-07 | Cisco Technology, Inc. | Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system |
FR2769779B1 (fr) * | 1997-10-14 | 1999-11-12 | Thomson Multimedia Sa | Procede de controle d'acces a un reseau domestique et dispositif mettant en oeuvre le procede |
EP0996265B1 (de) * | 1998-10-21 | 2006-04-19 | Alcatel | System und Verfahren zur Ausführung eines bestimmten Befehls zwischen erstem und zweitem Endgerät |
-
2000
- 2000-08-02 DE DE10037630A patent/DE10037630B4/de not_active Expired - Fee Related
-
2001
- 2001-07-09 EP EP01969353A patent/EP1314314A2/de not_active Withdrawn
- 2001-07-09 US US10/333,381 patent/US7164766B2/en not_active Expired - Fee Related
- 2001-07-09 AU AU2001289632A patent/AU2001289632A1/en not_active Abandoned
- 2001-07-09 WO PCT/EP2001/007853 patent/WO2002011323A2/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0866613A1 (de) * | 1997-03-21 | 1998-09-23 | CANAL+ Société Anonyme | Vorrichtung und Verfahren zur Verhinderung betrügerischen Zugangs zu einem System mit bedingtem Zugang |
WO1998043425A1 (en) * | 1997-03-21 | 1998-10-01 | Canal+ Societe Anonyme | Smartcard for use with a receiver of encrypted broadcast signals, and receiver |
Also Published As
Publication number | Publication date |
---|---|
AU2001289632A1 (en) | 2002-02-13 |
DE10037630B4 (de) | 2008-02-07 |
US7164766B2 (en) | 2007-01-16 |
WO2002011323A3 (de) | 2003-03-13 |
EP1314314A2 (de) | 2003-05-28 |
DE10037630A1 (de) | 2002-03-28 |
US20030128846A1 (en) | 2003-07-10 |
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