JP4294322B2 - コンテンツアイテムを保護しながら記憶するための受信デバイスおよび再生デバイス - Google Patents
コンテンツアイテムを保護しながら記憶するための受信デバイスおよび再生デバイス Download PDFInfo
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- JP4294322B2 JP4294322B2 JP2002571970A JP2002571970A JP4294322B2 JP 4294322 B2 JP4294322 B2 JP 4294322B2 JP 2002571970 A JP2002571970 A JP 2002571970A JP 2002571970 A JP2002571970 A JP 2002571970A JP 4294322 B2 JP4294322 B2 JP 4294322B2
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- 238000004590 computer program Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 238000007726 management method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
-
- 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
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
-
- 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
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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]
- G06F21/109—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM] by using specially-adapted hardware at the client
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
- G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00855—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of exchanging information with a remote server
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
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- 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
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2541—Rights Management
-
- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
-
- 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
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4788—Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
-
- 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
- H04N21/632—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 using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
- H04L2463/101—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Software Systems (AREA)
- Computing Systems (AREA)
- Databases & Information Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Technology Law (AREA)
- Storage Device Security (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Description
102 コンテンツアイテム
110 受信デバイス
111 記憶媒体
120 ビデオ再生デバイス
121 オーディオ再生デバイス
130 キーサーバ
140 ライセンスサーバ
141 ライセンスファイル
201 ダウンロードモジュール
203 書き込みモジュール
204 ライセンシングモジュール
205 ライセンスロッキングモジュール
302 復号モジュール
305 再生モジュール
306 登録モジュール
309 保護記憶モジュール
310 コンテンツ配信管理システム(CDMS)
Claims (10)
- コンテンツアイテムを保護しながら記憶するための受信デバイスであって、
前記コンテンツアイテムをダウンロードするためのダウンロード手段と、
前記ダウンロードされたコンテンツアイテムを記憶媒体に書き込むための書き込み手段と、
ライセンスサーバからライセンスファイルを獲得するためのライセンシング手段であって、前記ライセンスファイルが、少なくとも、前記ダウンロードされたコンテンツアイテムを前記記憶媒体に書き込む許可を有するライセンシング手段と、を有する受信デバイスにおいて、
再生デバイスのグループに連係する暗号化キーで前記ライセンスファイルを暗号化するための、また、前記暗号化されたライセンスファイルを前記記憶媒体に書き込むために前記暗号化されたライセンスファイルを前記書き込み手段に供給するための、ライセンスロッキング手段を有し、
前記ライセンスロッキング手段が、さらに、前記グループの選択された識別子を受信するように、また、前記選択された識別子に連係する前記暗号化キーをキーサーバから獲得するように、構成されていることを特徴とする受信デバイス。 - 前記ライセンスロッキング手段が、ライセンスロッカ暗号化キー(LLEK)で前記ライセンスファイルを暗号化するように、また、前記再生デバイスのグループに連係する前記暗号化キーで前記LLEKを暗号化するように、さらに、前記暗号化されたLLEKを前記記憶媒体に書き込むために前記暗号化されたLLEKを前記書き込み手段に供給するように、構成されていることを特徴とする請求項1に記載の受信デバイス。
- 前記暗号化キーが、公開/秘密キーペアの前記公開キーであることを特徴とする請求項1に記載の受信デバイス。
- 前記コンテンツアイテムが、オーディオデータ、ビデオデータの少なくとも1つを有することを特徴とする請求項1に記載の受信デバイス。
- 記憶媒体上に記憶されているコンテンツアイテムをかけるための再生デバイスであって、
前記記憶媒体上に記憶されている、前記コンテンツアイテムに対するライセンスファイル内の許可にしたがって、前記コンテンツアイテムを再生するための再生手段を有する再生デバイスにおいて、
前記ライセンスファイルが、前記記憶媒体上に暗号化されて記憶されていること、および、さらに、
1つ以上の解読キーを記憶するための保護記憶手段であって、各解読キーが再生デバイスのそれぞれのグループに連係している保護記憶手段と、
記憶されている解読キーが、前記暗号化されているライセンスファイルを解読するのに適しているか否かを確認するための復調手段であって、もしそうであれば、
前記記憶されている解読キーを用いて前記ライセンスファイルを解読し、そして、前記解読されたライセンスファイルを前記再生手段に供給するための復調手段と、
前記再生デバイスに連係する公開/秘密キーペアの公開キーをコンテンツ配信管理システム(CDMS)に登録するための登録手段であって、当該公開/秘密キーペアの前記秘密キーが前記保護記憶手段に記憶されている登録手段において、当該公開キーで暗号化されている、再生デバイスのグループに連係する解読キーを受信して、当該暗号化されている解読キーを解読し、そして、当該解読キーを前記保護記憶手段に記憶させる登録手段とを、有することを特徴とする再生デバイス。 - 前記ライセンスファイルが、ライセンスロッカ暗号化キー(LLEK)で暗号化されて記憶されており、当該LLEKが、LLEK暗号化キーで暗号化されて前記記憶媒体に記憶されており、前記1つ以上の解読キーが、LLEK解読キーであり、前記復調手段が、記憶されているLLEK解読キーが前記暗号化されているLLEKを解読するのに適しているか否かを確認し、もしそうであれば、前記記憶されているLLEK解読キーを用いて前記暗号化されているLLEKから前記LLEKを獲得し、前記LLEKを用いて前記ライセンスファイルを解読するように構成されていることを特徴とする請求項5に記載の再生デバイス。
- 前記コンテンツアイテムが、オーディオデータ、ビデオデータの少なくとも1つを有することを特徴とする請求項5に記載の再生デバイス。
- 前記記憶されている解読キーが、公開/秘密キーペアの前記秘密キーであることを特徴とする請求項5に記載の再生デバイス。
- 受信デバイスとして機能するように実行されるときに、プログラム可能なデバイスをイネーブルにするためのコンピュータプログラムであって、
コンテンツアイテムをダウンロードするためのダウンロード手段と、
前記ダウンロードされたコンテンツアイテムを記憶媒体に書き込むための書き込み手段と、
ライセンスサーバからライセンスファイルを獲得するためのライセンシング手段であって、前記ライセンスファイルが、少なくとも、前記ダウンロードされたコンテンツアイテムを前記記憶媒体に書き込む許可を有するライセンシング手段と、を有するコンピュータプログラムにおいて、
再生デバイスのグループに連係する暗号化キーで前記ライセンスファイルを暗号化するための、また、前記暗号化されたライセンスファイルを前記記憶媒体に書き込むために前記暗号化されたライセンスファイルを、前記コンテンツアイテムを前記記憶媒体に書き込むための書き込み手段に供給するための、ライセンスロッキング手段を有し、
前記ライセンスロッキング手段が、さらに、前記グループの選択された識別子を受信するように、また、前記選択された識別子に連係する前記暗号化キーをキーサーバから獲得するように、構成されていることを特徴とするコンピュータプログラム。 - 再生デバイスとして機能するように実行されるときに、プログラム可能なデバイスをイネーブルにするためのコンピュータプログラムであって、
記憶媒体上に記憶されている、コンテンツアイテムに対するライセンスファイル内の許可にしたがって、前記コンテンツアイテムを再生するための再生手段を有するコンピュータプログラムにおいて、
前記ライセンスファイルが前記記憶媒体上に暗号化されて記憶されていること、および、さらに、
記憶されている解読キーが、前記暗号化されているライセンスファイルを解読するのに適しているか否かを確認するための復調手段であって、もしそうであれば、
前記記憶されている解読キーを用いて前記ライセンスファイルを解読し、そして、前記解読されたライセンスファイルを前記コンテンツアイテムを再生するための再生手段に供給するための復調手段と、
前記再生デバイスに連係する公開/秘密キーペアの公開キーをコンテンツ配信管理システム(CDMS)に登録するための登録手段であって、当該公開/秘密キーペアの前記秘密キーが保護記憶手段に記憶されている登録手段において、当該公開キーで暗号化されている、再生デバイスのグループに連係する解読キーを受信して、当該暗号化されている解読キーを解読し、そして、当該解読キーを前記保護記憶手段に記憶させる登録手段とを、有することを特徴とするコンピュータプログラム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01200898 | 2001-03-12 | ||
PCT/IB2002/000245 WO2002073378A2 (en) | 2001-03-12 | 2002-01-28 | Receiving device for securely storing a content item, and playback device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004534291A JP2004534291A (ja) | 2004-11-11 |
JP4294322B2 true JP4294322B2 (ja) | 2009-07-08 |
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Application Number | Title | Priority Date | Filing Date |
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JP2002571970A Expired - Lifetime JP4294322B2 (ja) | 2001-03-12 | 2002-01-28 | コンテンツアイテムを保護しながら記憶するための受信デバイスおよび再生デバイス |
Country Status (11)
Country | Link |
---|---|
US (1) | US7124304B2 (ja) |
EP (1) | EP1370921A2 (ja) |
JP (1) | JP4294322B2 (ja) |
KR (1) | KR100932944B1 (ja) |
CN (1) | CN100458640C (ja) |
AU (1) | AU2002225292A1 (ja) |
BR (2) | BRPI0204473B1 (ja) |
MX (1) | MXPA02011091A (ja) |
PL (1) | PL373366A1 (ja) |
RU (1) | RU2290767C2 (ja) |
WO (1) | WO2002073378A2 (ja) |
Families Citing this family (105)
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2002
- 2002-01-28 JP JP2002571970A patent/JP4294322B2/ja not_active Expired - Lifetime
- 2002-01-28 BR BRPI0204473-0A patent/BRPI0204473B1/pt unknown
- 2002-01-28 RU RU2003130084/09A patent/RU2290767C2/ru active IP Right Revival
- 2002-01-28 PL PL02373366A patent/PL373366A1/xx not_active Application Discontinuation
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JP2004534291A (ja) | 2004-11-11 |
CN100458640C (zh) | 2009-02-04 |
US7124304B2 (en) | 2006-10-17 |
WO2002073378A2 (en) | 2002-09-19 |
RU2290767C2 (ru) | 2006-12-27 |
PL373366A1 (en) | 2005-08-22 |
KR100932944B1 (ko) | 2009-12-21 |
BR0204473A (pt) | 2003-05-13 |
BRPI0204473B1 (pt) | 2017-11-28 |
RU2003130084A (ru) | 2005-04-10 |
EP1370921A2 (en) | 2003-12-17 |
MXPA02011091A (es) | 2003-06-09 |
AU2002225292A1 (en) | 2002-09-24 |
KR20030001482A (ko) | 2003-01-06 |
WO2002073378A3 (en) | 2003-10-02 |
CN1471663A (zh) | 2004-01-28 |
US20020174354A1 (en) | 2002-11-21 |
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