JP2009545229A - コンテンツを安全に配信する方法、装置およびシステム - Google Patents
コンテンツを安全に配信する方法、装置およびシステム Download PDFInfo
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- 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
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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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- 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
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
-
- 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
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
-
- 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
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
- H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
-
- 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
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Storage Device Security (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims (23)
- コンテンツを安全に配信する方法であって、
第1の鍵を用いて前記コンテンツを暗号化するステップと、
第2の鍵を用いて前記第1の鍵を暗号化するステップと、
前記暗号化されたコンテンツおよび前記暗号化された第1の鍵を配信するステップと、を含み、
前記第2の鍵のローカルに記憶されたコピーを用いて前記第1の鍵を復号化し、かつ前記復号化された第1の鍵を用いて前記コンテンツを復号化することによって前記コンテンツを復号化する、前記方法。 - 前記復号化されたコンテンツを、安全なチャネルを介して取得される第3の鍵を用いて暗号化するステップと、
前記第3の鍵を用いて暗号化された前記コンテンツを前記第3の鍵のソースに通信するステップと、をさらに含み、
前記第3の鍵を用いて暗号化された前記コンテンツを、前記第3の鍵のローカル・コピーを用いて復号化する、請求項1に記載の方法。 - 前記第3の鍵を用いて前記コンテンツを暗号化する前に、前記復号化されたコンテンツに識別のためにマーク付けを行うステップをさらに含む、請求項2に記載の方法。
- 前記復号化されたコンテンツに識別のためにマーク付けを行うステップと、
前記マーク付けが行われたコンテンツを前記第1の鍵を用いて再暗号化するステップと、をさらに含む、請求項1に記載の方法。 - 前記マーク付けが行われて再暗号化されたコンテンツを記憶するステップをさらに含む、請求項4に記載の方法。
- 前記マークが電子透かしを含む、請求項4に記載の方法。
- 前記配信されたコンテンツおよび前記第1の鍵を、復号化する前に記憶するステップをさらに含む、請求項1に記載の方法。
- 前記第1の鍵がワーク鍵を含む、請求項1に記載の方法。
- 前記第2の鍵がスマート・カード鍵を含む、請求項1に記載の方法。
- 前記第3の鍵がセッション鍵を含む、請求項2に記載の方法。
- 前記コンテンツが音声映像コンテンツを含む、請求項1に記載の方法。
- コンテンツを安全に配信する装置であって、
コンテンツの暗号化および復号化を行うセキュア処理モジュールと、
暗号化鍵をローカルに記憶して復号化するスマート・カードと、を含み、
第1の鍵で暗号化されたコンテンツを受信し、第2の鍵で暗号化された前記第1の鍵を受信すると、前記装置の前記スマート・カードが、前記第2の鍵のローカルに記憶されたコピーを用いて前記第1の鍵を復号化し、前記セキュア処理モジュールが、前記受信された暗号化されたコンテンツを前記復号化された第1の鍵を用いて復号化する、前記装置。 - 前記復号化されたコンテンツにマーク付けを行うマーク付けモジュールをさらに含む、請求項12に記載の装置。
- 前記セキュア処理モジュールは、前記マーク付けされたコンテンツを前記第1の鍵を用いて再暗号化する、請求項13に記載の装置。
- 前記装置が、安全なチャネルを介してコンテンツ・プレーヤから第3の鍵を受信し、前記セキュア処理モジュールが、前記復号化されたコンテンツを前記第3の鍵を用いて暗号化し、前記装置が、前記第3の鍵を用いて暗号化された前記コンテンツを前記コンテンツ・プレーヤに通信する、請求項12に記載の装置。
- 前記コンテンツ・プレーヤが、前記第3の鍵で暗号化された前記コンテンツを、前記第3の鍵のローカルに記憶されたコピーを用いて復号化する、請求項15に記載の装置。
- 前記復号化されたコンテンツを前記第3の鍵を用いて暗号化する前に、前記復号化されたコンテンツにマーク付けを行うマーク付けモジュールをさらに含む、請求項15に記載の装置。
- コンテンツを安全に配信するシステムであって、
コンテンツを配信するコンテンツ・ソースと、
前記配信されたコンテンツを第1の鍵を用いて暗号化し、前記第1の鍵を第2の鍵を用いて暗号化する電子対策装置と、
第1の鍵で暗号化された前記コンテンツと第2の鍵で暗号化された前記第1の鍵とを受信する装置であって、コンテンツの暗号化および復号化を行うセキュア処理モジュールと、暗号化鍵をローカルに記憶して復号化するスマート・カードとを含む前記装置と、
前記受信された暗号化されたコンテンツおよび前記第1の鍵を記憶する記憶装置と、を含み、
前記第1の鍵で暗号化されたコンテンツを受信し、前記第2の鍵で暗号化された前記第1の鍵を受信すると、前記装置の前記スマート・カードが、前記第2の鍵のローカルに記憶されたコピーを用いて前記第1の鍵を復号化し、前記セキュア処理が、前記受信された暗号化されたコンテンツを前記復号化された第1の鍵を用いて復号化する、前記システム。 - 前記装置が、前記復号化されたコンテンツにマーク付けを行うマーク付けモジュールをさらに含む、請求項18に記載のシステム。
- 前記装置の前記セキュア処理モジュールが、前記マーク付けされたコンテンツを前記第1の鍵を用いて再暗号化する、請求項19に記載のシステム。
- 前記マーク付けされて再暗号化されたコンテンツが、前記記憶装置に記憶される、請求項20に記載のシステム。
- 第3の鍵を安全なチャネルを介して前記装置に通信するコンテンツ・プレーヤをさらに含み、
前記装置が、前記復号化されたコンテンツを前記第3の鍵を用いて暗号化し、前記第3の鍵を用いて暗号化された前記コンテンツを前記コンテンツ・プレーヤに通信し、前記コンテンツ・プレーヤが、前記第3の鍵で暗号化された前記コンテンツを、前記第3の鍵のローカルに記憶したコピーを用いて復号化する、請求項18に記載のシステム。 - 前記装置が、前記復号化したコンテンツを前記第3の鍵を用いて暗号化する前に、前記復号化したコンテンツにマーク付けを行うマーク付けモジュールをさらに含む、請求項22に記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US83283006P | 2006-07-24 | 2006-07-24 | |
PCT/US2006/047634 WO2008013562A1 (en) | 2006-07-24 | 2006-12-13 | Method, apparatus and system for secure distribution of content |
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Publication Number | Publication Date |
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JP2009545229A true JP2009545229A (ja) | 2009-12-17 |
JP2009545229A5 JP2009545229A5 (ja) | 2010-02-12 |
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JP2009521733A Pending JP2009545229A (ja) | 2006-07-24 | 2006-12-13 | コンテンツを安全に配信する方法、装置およびシステム |
Country Status (7)
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US (1) | US8627482B2 (ja) |
EP (1) | EP2044765A1 (ja) |
JP (1) | JP2009545229A (ja) |
KR (1) | KR101321971B1 (ja) |
CN (1) | CN101491078B (ja) |
BR (1) | BRPI0621945A2 (ja) |
WO (1) | WO2008013562A1 (ja) |
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Also Published As
Publication number | Publication date |
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KR101321971B1 (ko) | 2013-10-28 |
CN101491078A (zh) | 2009-07-22 |
US8627482B2 (en) | 2014-01-07 |
KR20090031747A (ko) | 2009-03-27 |
WO2008013562A1 (en) | 2008-01-31 |
CN101491078B (zh) | 2012-08-08 |
BRPI0621945A2 (pt) | 2011-10-18 |
US20090290711A1 (en) | 2009-11-26 |
EP2044765A1 (en) | 2009-04-08 |
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