CN103442254A - IPTV digital rights management system based on modularization - Google Patents
IPTV digital rights management system based on modularization Download PDFInfo
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- CN103442254A CN103442254A CN2013103784497A CN201310378449A CN103442254A CN 103442254 A CN103442254 A CN 103442254A CN 2013103784497 A CN2013103784497 A CN 2013103784497A CN 201310378449 A CN201310378449 A CN 201310378449A CN 103442254 A CN103442254 A CN 103442254A
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Abstract
The invention discloses an IPTV digital rights management system based on modularization. The IPTV digital rights management system based on modularization comprises a content encryption module, a key management module, an authorization management module, a content decryption module and a key authorization management module, wherein the content encryption module is used for allocating program markers according to program content and encrypting the program content with encryption keys; the key management module is used for saving and maintaining content identifiers and encryption key pairs and providing the service of inquiry of the content identifiers and the corresponding keys; the authorization management module is used for authorizing use permissions of users and requesting an inquiry into the corresponding encryption keys from the key management module according to the content identifiers purchased by the users; the content decryption module is used for receiving the encrypted program content, restoring the program content with decryption keys and transmitting the restored program content to an IPTV terminal; the key authorization management module is used for confirming terms of validity and permission levels of the users, obtaining the content keys through decryption and transmitting the encryption keys to control use of the permissions of the users. Through the modularization design, the IPTV digital rights management system improves safety, can be used in various network environments and is wide in application range.
Description
Technical field
The present invention relates to the networking technology area of IPTV, be specifically related to a kind of based on modular IPTV system for numeral copyright management.
Background technology
Digital Media refers to the information carrier of form record with binary number, processing, propagation, acquisition process, these carriers comprise the perception mediums such as digitized word, figure, image, sound, video image and animation, with the presentation medium (coding) that means these perception mediums etc., be commonly referred to as logical medium, and the media in kind of storage, transmission, display logic media.
Network security mainly refers to that the data in hardware, software and the system thereof of network system are protected, and is not subject to the former of accidental or malice thereby suffers to destroy, change, reveals, and system is reliably normally operation continuously, and network service does not interrupt
IPTV (Internet Protocol Television) is IPTV, a kind of multiple technologies that integrate, for providing the brand-new technological system framework of the multiple interactive services that comprises Digital Television, the domestic consumer mainly contains streaming media playing content gather and edit storage and the subsystem such as authentication and accounting, mainly files in stream media is stored and transmitted to the Internet Transmission based on Internet, usually the content distribution service node to be set at edge, configuration flow media services and memory device adopt efficient video compression technology, IPTV utilizes computer or set-top box television to complete the functions such as receiver, video request program video broadcasting and surfing on the net, to carrying out from now on the video class business, outstanding advantage is arranged.
The birth of IPTV industry, for the propagation of new media content provides a conveniently path.Because the IPTV business directly is connected with Internet, thereby be faced with the Internet network multiple security risk this make the multiple digitized program of implementing on network play a lot of unsafe factors that exist, make illegal molecule can carry out easily content piracy and propagation, diminish the interests of program making business and operator, be unfavorable for the sustainable development of the IPTV network industry.
From the IPTV development so far, how building safe and reliable IPTV network becomes the focus that numerous sciemtifec and technical spheres are widely paid close attention to.Be accompanied by reaching its maturity and extensive use of digital copyright management (Digital ghts Management, DRM) technology, industry generally believes that the DRM solution that searches out a maturation for the IPTV network is the key of the reliable IPTV network of Build Security.DRM is an important component part of digital asset management system, has stipulated that individual and unit are in the creation of digital asset and the authority in transaction.The user only need to buy content provider or program dealer's license passport can watch the programme content after deciphering.In licence, built-in user watches grade and the corresponding program decryption key of program, and the user only need import credit number in receiving and deciphering equipment when watching programme content for the first time, can watch programme content.Its basic principle is: at first; content provider and other institution cooperations; the common empowerment management center that builds a programme content; to programme content encoded, the processing such as compression, scrambling; utilize embedded key and credit number to its encipherment protection, the program header file after respective handling is being stored the KEY ID of program and the legal URL of authorization center plays.Authority user, in a sowing time, by the credit number of its purchase of checking, can obtain the decruption key of program automatically by authentication of users, program can be play.If the consumer does not buy the licence of authorization center, obtain the corresponding authority of playing, even being downloaded to local PC, program also can't watch its content.
From IPTV, development is proposed, its input of each bound pair and technology are a lot of, for the application demand of different field, each side has proposed the DRM such as AVS, walled garden (Walied Garden), Windows Media, DRM, Domain DRM, RMCS DRM and the multiple solutions such as DRM based on the multikey relationship type, but also there is no so far the ripe special DRM solution for IPTV, is only the modified version of some DRM standards.
What repercussion was stronger in the industry is a solution that comprehensive current techniques proposes: by digital certificate authentication system (PKI/CA), for the digital permission certificate is signed and issued in the supply of content supplier and authorised dealer, use system of real name authentication registration mechanism between the dealer of content supplier and user, autographed copy sale has the license passport of digital watermarking sign.Using the Multilayered encryption transmission security system of being built by multiple encryption algorithms between content supplier and user, between provider and dealer and user and user.This mode is very characteristic, but the constructive system framework is comparatively loaded down with trivial details, and the implementation procedure of multiple encryption and decryption is too complicated.In the long term, wasted a lot of resources, be unfavorable for that the IPTV business forms industrial chain, the equipment of carrying IPTV network is unsuitable for carrying out compatibility and integrated with the equipment of other DRM standards.
Although more external DRM products are very ripe, but its specific application scenario is arranged, and all there is safety problem in various degree in various schemes, for example, when the user of use Window DRM uses for the first time, need to connect the copyright authentication server by the Internet and obtain corresponding authority.The user, in obtaining licence and obtaining the process of authority, provide the relevant information of self or the network address to authentication center, easily information is caused and divulges a secret, and has reduced the fail safe of system.The environment for use of China IPTV network has its particularity, and therefore external DRM technology can not intactly be used.
Therefore, be necessary to provide a kind of be applied to multiple environment meet existing demand based on modular IPTV system for numeral copyright management.
Summary of the invention
The purpose of this invention is to provide a kind ofly based on modular IPTV system for numeral copyright management, when improving fail safe, make this system be applicable to multiple applied environment.
Therefore, the invention provides a kind ofly based on modular IPTV system for numeral copyright management, comprising:
The content-encrypt module, for the programme content provided according to content supplier, distribute program sign, utilizes the encryption key of key management module to be encrypted described programme content, and by content designator and key to passing to key management module;
Key management module, for preserving and maintenance content identifier and encryption key pair, for entitlement management module provides the inquiry service of contents designator and counterpart keys;
Entitlement management module, for the authenticated user rights of using, the content designator of buying according to the user is to the corresponding encryption key of key management module requesting query, and the user that authentication is passed through transmits its user profile to the IPTV terminal;
Content decryption module, for the programme content after the encryption that receives the transmission of content-encrypt module, used decruption key reduction programme content, is sent to the IPTV terminal;
The key authorization administration module, for authenticated user information, and confirmation user's valid expiration date and Permission Levels, deciphering obtains content key, and transmit encryption key to decryption system under the control of the authority information of programme content, realize the use control to user right.
Preferably, described system is carried out transfer of data and encryption by content distributing network.
Compared with prior art, IPTV system for numeral copyright management of the present invention, by modularized design, improve fail safe, can be applied to the multiple network environment, applied widely.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the embodiment of the present invention based on modular IPTV system for numeral copyright management.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under the creative work prerequisite, belong to the scope of protection of the invention.
With reference to figure 1, the invention provides a kind ofly based on modular IPTV system for numeral copyright management, comprising:
The content-encrypt module, for the programme content provided according to content supplier, distribute program sign, utilizes the encryption key of key management module to be encrypted described programme content, and by content designator and key to passing to key management module;
Key management module, for preserving and maintenance content identifier and encryption key pair, for entitlement management module provides the inquiry service of contents designator and counterpart keys;
Entitlement management module, for the authenticated user rights of using, the content designator of buying according to the user is to the corresponding encryption key of key management module requesting query, and the user that authentication is passed through transmits its user profile to the IPTV terminal;
Content decryption module, for the programme content after the encryption that receives the transmission of content-encrypt module, used decruption key reduction programme content, is sent to the IPTV terminal;
The key authorization administration module, for authenticated user information, and confirmation user's valid expiration date and Permission Levels, deciphering obtains content key, and transmit encryption key to decryption system under the control of the authority information of programme content, realize the use control to user right.
Preferably, described system is carried out transfer of data and encryption by content distributing network (Content Delivery Network, CDN).Adopt the CDN technology can improve the efficiency of information flow in network, solve because the network bandwidth is little, user's visit capacity is large, the unequal problem of network point distribution technically comprehensively, improve the response speed of user's access.
Compared with prior art, IPTV system for numeral copyright management of the present invention, by modularized design, improve fail safe, can be applied to the multiple network environment, applied widely.The modular form of building is more suitable for the scene that China programme content provider separates with Virtual network operator.In view of programme content provider, the agent difference to the content protecting demand, modular DRM can support many contents to introduce with open arms.Online audio/video on-demand, the live broadcast service of this DRM energy effective guarantee IPTV network, also support Time-Shift TV, the interactive value-added services such as TVOD (True VI deo On Demand) and VAS (Value-Added Services).Modular DRM has the platform opening, both can be with third-party DRM scheme the compatible or integrated purpose with the interactive collaboration of realizing interconnecting, also can independently realize the repacking that seamlessly transits of IPTV business function, thereby complete more more suitable functions.Contrast other DRM schemes, modularization DRM also possesses high performance-price ratio, robustness advantages of higher, is applied at present domestic IPTV market more suitable.
Above the embodiment of the present invention is provided based on modular IPTV system for numeral copyright management, be described in detail, applied specific case in the present invention principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention simultaneously.
Claims (2)
1. one kind based on modular IPTV system for numeral copyright management, it is characterized in that, comprising:
The content-encrypt module, for the programme content provided according to content supplier, distribute program sign, utilizes the encryption key of key management module to be encrypted described programme content, and by content designator and key to passing to key management module;
Key management module, for preserving and maintenance content identifier and encryption key pair, for entitlement management module provides the inquiry service of contents designator and counterpart keys;
Entitlement management module, for the authenticated user rights of using, the content designator of buying according to the user is to the corresponding encryption key of key management module requesting query, and the user that authentication is passed through transmits its user profile to the IPTV terminal;
Content decryption module, for the programme content after the encryption that receives the transmission of content-encrypt module, used decruption key reduction programme content, is sent to the IPTV terminal;
The key authorization administration module, for authenticated user information, and confirmation user's valid expiration date and Permission Levels, deciphering obtains content key, and transmit encryption key to decryption system under the control of the authority information of programme content, realize the use control to user right.
2. as claimed in claim 1ly based on modular IPTV system for numeral copyright management, it is characterized in that, described system is carried out transfer of data and encryption by content distributing network.
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| CN2013103784497A CN103442254A (en) | 2013-08-19 | 2013-08-19 | IPTV digital rights management system based on modularization |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105025321A (en) * | 2015-07-28 | 2015-11-04 | 无锡天脉聚源传媒科技有限公司 | Network video processing method and network video server |
| CN110876085A (en) * | 2018-09-03 | 2020-03-10 | 国家广播电视总局广播电视科学研究院 | Method, system and client for protecting multimedia content |
| CN112637637A (en) * | 2020-12-15 | 2021-04-09 | 上海文广科技（集团）有限公司 | Operation system and method for rural digital movies |
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| CN101207794A (en) * | 2006-12-19 | 2008-06-25 | 中兴通讯股份有限公司 | Method for enciphering and deciphering number copyright management of IPTV system |
| CN101442655A (en) * | 2007-11-22 | 2009-05-27 | 上海文广互动电视有限公司 | Digital copyright management system of digital program broadcast system |
| CN102760221A (en) * | 2011-04-27 | 2012-10-31 | 航天信息股份有限公司 | IPTV (Internet Protocol Television) digital rights management (DRM) method and device based on digital watermarking and encryption |
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- 2013-08-19 CN CN2013103784497A patent/CN103442254A/en active Pending
Patent Citations (4)
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| CN101202883A (en) * | 2006-12-15 | 2008-06-18 | 中兴通讯股份有限公司 | System for numeral copyright management of IPTV system |
| CN101207794A (en) * | 2006-12-19 | 2008-06-25 | 中兴通讯股份有限公司 | Method for enciphering and deciphering number copyright management of IPTV system |
| CN101442655A (en) * | 2007-11-22 | 2009-05-27 | 上海文广互动电视有限公司 | Digital copyright management system of digital program broadcast system |
| CN102760221A (en) * | 2011-04-27 | 2012-10-31 | 航天信息股份有限公司 | IPTV (Internet Protocol Television) digital rights management (DRM) method and device based on digital watermarking and encryption |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105025321A (en) * | 2015-07-28 | 2015-11-04 | 无锡天脉聚源传媒科技有限公司 | Network video processing method and network video server |
| CN110876085A (en) * | 2018-09-03 | 2020-03-10 | 国家广播电视总局广播电视科学研究院 | Method, system and client for protecting multimedia content |
| CN112637637A (en) * | 2020-12-15 | 2021-04-09 | 上海文广科技（集团）有限公司 | Operation system and method for rural digital movies |
| CN112637637B (en) * | 2020-12-15 | 2024-01-09 | 上海文广科技（集团）有限公司 | Operation system and method for rural digital cinema |
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