WO2000016557A1 - Decodeur de systeme a acces conditionnel et procede de chargement de droits d'utilisateurs dans un tel decodeur - Google Patents
Decodeur de systeme a acces conditionnel et procede de chargement de droits d'utilisateurs dans un tel decodeur Download PDFInfo
- Publication number
- WO2000016557A1 WO2000016557A1 PCT/FR1999/002174 FR9902174W WO0016557A1 WO 2000016557 A1 WO2000016557 A1 WO 2000016557A1 FR 9902174 W FR9902174 W FR 9902174W WO 0016557 A1 WO0016557 A1 WO 0016557A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- security element
- decoder
- emm
- message
- rights
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
- G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
- G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
- G07F7/1008—Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
- G06Q20/346—Cards serving only as information carrier of service
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
- G06Q20/355—Personalisation of cards for use
- G06Q20/3552—Downloading or loading of personalisation data
-
- 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
Definitions
- the present invention relates to a conditional access system decoder and, more particularly, to a method for loading the rights that a user can acquire to access a service distributed within a conditional access system.
- a conditional access system allows a service provider to provide its services only to users who have acquired rights to these services. This is the case, for example, with pay-TV systems.
- the service provided by a service provider consists of information scrambled by control words.
- the service provider provides each user with the control words which were used to scramble the information.
- they are provided after being encrypted with a key algorithm K.
- the different encrypted control words are sent to the different users in control messages commonly noted ECM (the abbreviation ECM comes from the English "Entitlement Control Message").
- ECM comes from the English "Entitlement Control Message"
- the control words are decrypted in a secure processor contained in a security element such as, for example, a smart card.
- Scrambled information can only be descrambled, and therefore read by a user, up to the rights assigned to this user.
- the rights of each user are sent in rights management messages commonly noted EMM (the abbreviation EMM comes from the English "Entitlement Management Message").
- EMM comes from the English "Entitlement Management Message"
- the secure processor makes it possible to validate and record the rights that the user has on the service delivered.
- the service provider provides each user with a smart card and a decoder. EMM messages are selected by setting up an appropriate configuration of filters contained in the decoder. This configuration is implemented from the reading, by circuits of the decoder, of data contained in the smart card. To this end, the user is led to introduce the smart card into the decoder.
- the EMM messages which correspond to the chip card are present in the signal which the decoder receives, they are selected using the filters and transferred to the chip card where the corresponding rights are updated and stored.
- EMM messages are sent asynchronously before sending the scrambled service to which they correspond.
- User rights are thus, for example, very often issued at the peak of the night. In addition, user rights are frequently renewed without the knowledge of the user.
- a user who subscribes to several service providers has as many smart cards as there are subscriptions. If the different service providers share the same decoder, it is possible to envisage providing several different smart card readers on the same decoder, but in this case, this significantly increases the price of the decoder. In the most likely case where the user has more smart cards than card readers available on his decoder, it is then almost impossible for him to manage his fleet of smart cards correctly to acquire all the rights as soon as possible. which he can claim.
- the invention aims to solve the above problems.
- conditional access system decoder comprising: - at least one device intended to read and / or write data in a detachable security element provided by a service provider; - filters intended to select at least one rights management message that a user has on a service provided by the provider from a received data stream; and
- the decoder further comprises a rights storage module which is capable of storing the configuration of filters implemented by the aforementioned access control module; to put back in place, following the erasure of the filter configuration following the withdrawal of the security element, the memorized filter configuration appropriate to said security element, so as to select a rights management message intended for said security element safety when the latter is removed; and storing said message in a memory of the decoder.
- the module for storing the rights of the decoder is also capable of detecting the insertion of a security element in the decoder; verifying whether a rights management message intended for said inserted security element is stored in the memory of the decoder; and in the event of a positive verification, transferring said stored message to said inserted security element.
- the rights storage module detects the insertion of a security element in the decoder by recording any new installation of filter configuration by the access control module.
- the invention also relates to a method for processing the rights management message that a user has on a service, said method comprising the steps consisting in:
- the step of setting up the filter configuration appropriate to said security element is followed by a step of memorizing said configuration and, when said security element is removed from the decoder, causing the erasure of said filter configuration, the filter configuration appropriate to the security element removed is replaced from the configuration memorized during the memorization step so as to select a rights management message intended for said security element removed .
- the method comprises an additional step consisting in storing in a memory of the decoder the rights management message intended for the security element withdrawn when such a message is selected.
- the method further comprises the steps consisting in:
- An advantage of the invention is to allow the acquisition of user rights without the security element which contains the data for setting up the configuration of filters allowing the acquisition of these rights being present in the decoder at the time of acquisition.
- FIGS. 1 to 4 Other characteristics and advantages of the invention will appear on reading a particular, non-limiting embodiment of the invention made with reference to FIGS. 1 to 4, among which:
- FIG. 1 shows a decoder provided with a security element according to the invention
- FIG. 2 schematically shows a data packet carrying a user rights management message
- FIG. 3 shows schematically the different events and the different data transfers occurring during the process of processing user rights management messages according to the invention
- FIG. 1 represents a decoder of a conditional access system allowing a user with whom it is installed to receive services, such as television programs, in the form of a digital information stream coded for example according to the MPEG 2 standard (ISO / IEC 13818-1).
- the decoder comprises, in a manner known per se, a tuner / demodulator 17 which receives a signal S, originating from a satellite antenna or from a cable network, and which supplies as an output a stream of digital data, transmitted in the form of packets, called TS (from the English "Transport Stream” meaning "transport stream”) in the aforementioned MPEG 2 standard, and containing the services provided by providers.
- a tuner / demodulator 17 which receives a signal S, originating from a satellite antenna or from a cable network, and which supplies as an output a stream of digital data, transmitted in the form of packets, called TS (from the English "Transport Stream” meaning "transport stream”) in the aforementioned MPEG 2 standard, and containing the services provided by providers.
- each service provider also provides the user with a smart card 10 which contains secret elements making it possible to descramble the services.
- This smart card 10 is intended to be inserted into a smart card reader of the decoder of which only the interface 12 is shown with a microcontroller 16 in which the different applications of the decoder are executed.
- the decoder also includes a memory 14 which the microcontroller 16 can access in read or write.
- the decoder comprises a component 20 called demultiplexer which receives the TS data stream to extract therefrom the video or audio data packets corresponding to a service that the user wishes to view or to extract therefrom data packets containing so-called information "", such as EMM user rights management messages.
- the demultiplexer 20 is composed of filters 11 and a buffer memory 18, generally called "buffer".
- the filters are formed, as is known to those skilled in the art, of sets of comparators receiving on the one hand the data stream TS and on the other hand a reference value making it possible to identify the data packets to extract.
- a reference value making it possible to identify the data packets to extract.
- FIG 2 there is shown a data packet containing an EMM message for managing user rights. Like any data packet transported in the TS stream, it includes an identifier: the PID (from the English “Packet IDentifier”), followed by so-called “private" data. In fact, all data concerning access control is specific to the service provider and is not defined in the standard for transporting data packets.
- PID from the English "Packet IDentifier”
- the EMM message In the private data is the EMM message itself.
- This message consists of three elements: - a first element AD containing the address of the smart card for which the EMM message is intended; it can also be an address corresponding to a group of smart cards for which the EMM message is intended;
- a smart card reader module 1 12 which includes both a hardware part (the read / write circuit on the chip - or integrated circuit - of the card) and a software part allowing to communicate with the other applications of the decoder ;
- a module called recovery of signaling tables 101 which is software capable of extracting from the TS stream tables containing information on the structure and positioning of the data packets in the TS stream.
- this module is capable of extracting a table called CAT (from the English "Conditional Access Table” literally meaning “conditional access table”) in the aforementioned MPEG 2 standard and which contains, among other things, the PIDs identifying the data packets containing EMM messages; - a buffer management module which is low-level software responsible for allocating and handling the buffers used for storing packets which are extracted from the TS data stream by filters 1 1 1.
- the various resources which have just been described are used by applications (software) which are represented by circles in FIG. 3.
- the data flows are represented by continuous arrows and the events by dotted arrows.
- the first application is software specific to a service provider and which implements the conditional access system of this service provider. Indeed, it is very rare that two different service providers use the same conditional access system.
- the CA module is therefore secret software, which is known only to the service provider.
- the decoder manufacturer receives it in the form of "object code” (compiled software that cannot be understood - as opposed to “source code” - and cannot be modified as is) to be integrated into the decoder.
- the second application is, according to the invention, an application module independent of the module CA with which it does not communicate directly.
- the role of this MD module is, as we will see below, "to spy on” the filter configurations implemented by the CA module in order to then be able to receive EMM messages intended for a smart card which has been extracted from the decoder in place of the CA module.
- the module for retrieving the signaling tables 101 retrieves the table CAT described above and the module CA recovers from this table (step A1, Fig. 3) the PID identifying the data packets in which the EMM messages are transmitted for the provider providing the selected service.
- the PID is then stored by the module CA in the memory 14 of the decoder (step "PID STORAGE" A1bis).
- the card reader module 112 If we assume that a smart card No. 1 is inserted in the decoder, then the card reader module 112 generates a "CARD INSERTED” event in step A2. On receipt of this event, the module CA generates a "READ ADDRESS" event in step A3 and obtains, in response to the card reader module 112, the address of the smart card in step A4.
- the CA module can set up a configuration of filters C1 to select the EMM messages intended for chip card No. 1 (step A5 "POSE CONFIG.”).
- FIG. 4a there is shown the set 111 of filters F1 to Fn available for the different applications of the decoder. It is assumed that the filter F1 is allocated to another application, it is therefore shown in hatched form in FIG. 4a.
- the first available filter is the F2 filter. This is allocated to the CA module which therefore sets up the configuration C1 in F2.
- step A6 a packet containing an EMM message has been selected by the filter F2 which transmits it (step A6) to the pilot module 102, which generates an "EMM RECEIVED” event for the attention of the CA module (step A7) which responds with a "READ EMM” event (step A8) before receiving the corresponding EMM message (step A9).
- the module CA finally transmits the message EMM to the card reader module 112 (step A10) so that the latter transfers it to the smart card No. 1 for processing (updating of the rights of the user stored in the card).
- the steps A6 to A10 are repeated as many times as EMM messages intended for the smart card No. 1 are received by the filter F2.
- the module MD of the invention permanently monitors the filter configurations which are put in place by the module CA and, as soon as a new configuration is applied, as in step A5 above, the module MD retrieves this configuration (step B1) to memorize it (step "STORAGE CONFIG.” B1bis).
- step B1 the configuration of the filter configurations which are put in place by the module CA and, as soon as a new configuration is applied, as in step A5 above, the module MD retrieves this configuration (step B1) to memorize it (step "STORAGE CONFIG.” B1bis).
- step B1bis step "STORAGE CONFIG.” B1bis).
- CA deletes the filter configuration C1 corresponding to the card removed (step
- step D1 The module MD which monitors the filters 1 1 1 then receives an event "CONFIGURATION DELETED" (step D1) and immediately puts back in place (step D2) said configuration C1 which had been stored in step B1 bis above.
- step D2 the state of the filters has thus been represented at the end of this step D2: the filter F1 is always allocated to another application of the decoder; the filter F2 has been released by the module CA and the filter Fi has been allocated to the module MD to set up the configuration C1.
- the EMM messages intended for the smart card No. 1 can therefore still be selected in the data stream TS by the filter Fi despite the absence of said card in the decoder.
- the EMM message intended for card No. 1 is selected, it is transmitted to the module MD (step D3) to be stored in a memory of the decoder (step "STORAGE EMM" D3bis).
- the EMM messages are stored in a temporary buffer memory area of the memory 14 of the decoder.
- a filter for example the filter F2 ( Figure 4e)
- the module MD which constantly monitors the filter configurations implemented by the module CA, receives this configuration C1 (step E1) and compares it with those already stored (C1, C2). As this configuration C1 is already memorized, the module MD then checks whether EMM messages intended for the corresponding smart card No. 1 are memorized and it finds the message EMM1.
- the message EMM1 is then transmitted to the pilot module 102 (step E2) as if it came directly from the filters 111 (as during step A6). Steps A7 to A10 are then replayed and everything happens, from the point of view of the module CA, as if the message EMM1 received had just been selected by the filter F2 in the data stream TS.
- the updating of the rights of the user for the card No. 1 is made even if the new rights have been received while the card was not inserted in the decoder.
- an important advantage of the module MD of the invention is that it intervenes on the various resources of the decoder without ever interacting directly with the module CA.
- the software of the CA module therefore does not have to be modified with respect to the decoders of the prior art.
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Accounting & Taxation (AREA)
- Strategic Management (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Business, Economics & Management (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Storage Device Security (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69907699T DE69907699T2 (de) | 1998-09-11 | 1999-09-13 | Dekoder für ein system mit bedingtem zugang und verfahren zum laden von benutzerrechten in einem solchen system |
JP2000570971A JP2002525734A (ja) | 1998-09-11 | 1999-09-13 | 条件付きアクセスシステム用デコーダ及びデコーダ内の資格管理方法 |
EP99942958A EP1112658B1 (fr) | 1998-09-11 | 1999-09-13 | Decodeur de systeme a acces conditionnel et procede de chargement de droits d'utilisateurs dans un tel decodeur |
AU56276/99A AU5627699A (en) | 1998-09-11 | 1999-09-13 | Conditional access system decoder and entitlement management method in same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/11327 | 1998-09-11 | ||
FR9811327A FR2783335B1 (fr) | 1998-09-11 | 1998-09-11 | Procede de chargement de droits de systeme a acces conditionnel et dispositif mettant en oeuvre le procede |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000016557A1 true WO2000016557A1 (fr) | 2000-03-23 |
Family
ID=9530315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/002174 WO2000016557A1 (fr) | 1998-09-11 | 1999-09-13 | Decodeur de systeme a acces conditionnel et procede de chargement de droits d'utilisateurs dans un tel decodeur |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1112658B1 (fr) |
JP (1) | JP2002525734A (fr) |
CN (1) | CN1119898C (fr) |
AU (1) | AU5627699A (fr) |
DE (1) | DE69907699T2 (fr) |
ES (1) | ES2198949T3 (fr) |
FR (1) | FR2783335B1 (fr) |
WO (1) | WO2000016557A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2845854A1 (fr) * | 2002-10-11 | 2004-04-16 | Thomson Licensing Sa | Desactivation a distance de decodeurs d'acces a des donnees numeriques multimedia |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2833446B1 (fr) * | 2001-12-12 | 2004-04-09 | Viaccess Sa | Protocole de controle du mode d'acces a des donnees transmises en mode point a point ou point multi-point |
JP3965126B2 (ja) * | 2002-03-20 | 2007-08-29 | 松下電器産業株式会社 | コンテンツを再生する再生装置 |
CN100364331C (zh) * | 2003-12-30 | 2008-01-23 | 北京中视联数字系统有限公司 | 一种条件接收系统中对用户跨区进行管理的方法 |
JP2005269578A (ja) * | 2004-03-22 | 2005-09-29 | Toshiba Solutions Corp | 限定受信端末装置及び方法 |
KR100661170B1 (ko) * | 2005-01-07 | 2006-12-26 | 삼성전자주식회사 | 화상형성장치 및 그의 제어방법 |
JP4888184B2 (ja) * | 2007-03-26 | 2012-02-29 | ティアック株式会社 | 記憶装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996006504A1 (fr) * | 1994-08-19 | 1996-02-29 | Thomson Consumer Electronics, Inc. | Systeme d'autorisation d'acces utilisant des cartes intelligentes, a securite amelioree |
EP0723371A1 (fr) * | 1995-01-17 | 1996-07-24 | THOMSON multimedia S.A. | Procédé de protection des messages de gestion d'un système de controle d'accès et dispositif pour sa mise en oeuvre |
US5619501A (en) * | 1994-04-22 | 1997-04-08 | Thomson Consumer Electronics, Inc. | Conditional access filter as for a packet video signal inverse transport system |
EP0817485A1 (fr) * | 1996-06-28 | 1998-01-07 | THOMSON multimedia | Système à accès conditionnel et carte à puce permettant un tel accès |
WO1998009257A1 (fr) * | 1996-08-30 | 1998-03-05 | Gemplus S.C.A. | Systeme et procede pour charger des applications dans une carte a puce |
-
1998
- 1998-09-11 FR FR9811327A patent/FR2783335B1/fr not_active Expired - Fee Related
-
1999
- 1999-09-13 AU AU56276/99A patent/AU5627699A/en not_active Abandoned
- 1999-09-13 WO PCT/FR1999/002174 patent/WO2000016557A1/fr active IP Right Grant
- 1999-09-13 JP JP2000570971A patent/JP2002525734A/ja not_active Withdrawn
- 1999-09-13 ES ES99942958T patent/ES2198949T3/es not_active Expired - Lifetime
- 1999-09-13 CN CN99810817.0A patent/CN1119898C/zh not_active Expired - Fee Related
- 1999-09-13 EP EP99942958A patent/EP1112658B1/fr not_active Expired - Lifetime
- 1999-09-13 DE DE69907699T patent/DE69907699T2/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5619501A (en) * | 1994-04-22 | 1997-04-08 | Thomson Consumer Electronics, Inc. | Conditional access filter as for a packet video signal inverse transport system |
WO1996006504A1 (fr) * | 1994-08-19 | 1996-02-29 | Thomson Consumer Electronics, Inc. | Systeme d'autorisation d'acces utilisant des cartes intelligentes, a securite amelioree |
EP0723371A1 (fr) * | 1995-01-17 | 1996-07-24 | THOMSON multimedia S.A. | Procédé de protection des messages de gestion d'un système de controle d'accès et dispositif pour sa mise en oeuvre |
EP0817485A1 (fr) * | 1996-06-28 | 1998-01-07 | THOMSON multimedia | Système à accès conditionnel et carte à puce permettant un tel accès |
WO1998009257A1 (fr) * | 1996-08-30 | 1998-03-05 | Gemplus S.C.A. | Systeme et procede pour charger des applications dans une carte a puce |
Non-Patent Citations (2)
Title |
---|
COUTROT F ET AL: "A SINGLE CONDITIONAL ACCESS SYSTEM FOR SATELLITE-CABLE AND TERRESTRIAL TV", IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, vol. 35, no. 3, 1 August 1989 (1989-08-01), pages 464 - 468, XP000065971 * |
SCHOONEVELD VAN D: "STANDARDIZATION OF CONDITIONAL ACCESS SYSTEMS FOR DIGITAL PAY TELEVISION", PHILIPS JOURNAL OF RESEARCH, vol. 50, no. 1/02, 1 July 1996 (1996-07-01), pages 217 - 225, XP000627672 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2845854A1 (fr) * | 2002-10-11 | 2004-04-16 | Thomson Licensing Sa | Desactivation a distance de decodeurs d'acces a des donnees numeriques multimedia |
US7340056B2 (en) | 2002-10-11 | 2008-03-04 | Thomson Licensing | Remote deactivation of decoders for accessing multimedia digital data |
Also Published As
Publication number | Publication date |
---|---|
DE69907699D1 (de) | 2003-06-12 |
JP2002525734A (ja) | 2002-08-13 |
CN1317204A (zh) | 2001-10-10 |
EP1112658B1 (fr) | 2003-05-07 |
FR2783335A1 (fr) | 2000-03-17 |
EP1112658A1 (fr) | 2001-07-04 |
AU5627699A (en) | 2000-04-03 |
CN1119898C (zh) | 2003-08-27 |
DE69907699T2 (de) | 2004-03-18 |
ES2198949T3 (es) | 2004-02-01 |
FR2783335B1 (fr) | 2000-10-13 |
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