CN1275141C - Protecting method for digital media distribution and play - Google Patents
Protecting method for digital media distribution and play Download PDFInfo
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- CN1275141C CN1275141C CN 200310113047 CN200310113047A CN1275141C CN 1275141 C CN1275141 C CN 1275141C CN 200310113047 CN200310113047 CN 200310113047 CN 200310113047 A CN200310113047 A CN 200310113047A CN 1275141 C CN1275141 C CN 1275141C
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Abstract
The present invention relates to the fields of signal processing and digital safety, particularly to a digital image processing method which integrates a digital watermark technique and an encryption technique. The present invention comprises the procedures of the issuance of medium articles, the authorization of legal users, the encryption of medium files and the playing process of digital medium files. The method modifies the format information of digital medium files, and medium files can not be identified by medium playing software. The method provides a playing card which can identify the formats of medium files for legal customers, the playing card is bound with the identity information of customers and the hardware information of computers used by customers, and thereby, only specified customers can play digital media files. The medium playing mechanism fundamentally stops the illegal duplication and propagation of digital media files.
Description
Technical field
The present invention relates to signal Processing and numeric security field, particularly in conjunction with the digital image processing method of digital watermark technology and encryption technology.
Background technology
In recent years, networking has reached unprecedented speed of development, and the networking scope is more and more wider, and the network bandwidth is increasing, and user's surf time is also more and more longer.Network is rooted in the hearts of the people, and more and more has influence on daily life.Work, study and amusement all will be combined closely with network.Scholarly forecast, the bandwidth of internet will reach 1Gbps within 5 years, and people use the situation of network to need power supply or battery to work as computing machine, and network is with ubiquitous, and is always logical.Generally the occurring of online book shop, online class, network cinema and online music Room or the like service makes the home-confined network of just enjoying of people give convenient and satisfied that work, study and amusement bring.As shown in Figure 1, some film creation persons and musical composition person except adopting traditional release model, also can select more convenient network to carry out the works issue in the own works of issue.Simultaneously, digital camera and digital camera also can be more and more universal, finally will be near the popularity of mobile phone.People can allow more people enjoy the works of oneself with own picture shot and media releasing to network on the one hand, also can be used as the content provider on the other hand and obtain economic interests.
Because Digital Media is easy in network environment by bootlegging and propagation, so be vital to the protection of Digital Media.The issue of Digital Media and propagation are used and are related generally to three aspects, and they are:
1, copyright owner: the author of Digital Media will have the copyright of its works, simultaneously these works be born legal liabilities.The copyright owner must guarantee that the works of oneself meet the relevant regulations of state's laws and rules.
2, media releasing website: carry out the issue and the propaganda of digital media file, simultaneously media file is carried out encipherment protection.
3, consumer: they are by paying for the use or having the right to use of media file by other authorizations.
At first, we must guarantee copyright owner's right.By to the legitimate consumer mandate, guarantee that copyright owner's works have only validated user just can browse or download use in issue.Secondly, the rights and interests that we also must the protection consumer by browsing or use to guarantee the disabled user Digital Media embed digital watermark and combining encryption measure to Digital Media.
When Digital Media was carried out encipherment protection, digital watermark technology was the requisite support technology that guarantees digital medium safety.So-called digital watermarking is exactly to add some information to reach protection of Intellectual Property Rights such as copyright notice, permission to use condition in multi-medium data (as digital signals such as image, audio frequency, videos).From application point of view, digital watermarking can be divided into two big classes: robustness watermark and fragile watermarking.The robustness watermark can be used to confirm creator of content, buyer.Fragile watermarking can be used for the multimedia real and fake discrimination, and promptly when content of multimedia falls under suspicion, it is verified, and point out tampered position, even attack type etc.
Summary of the invention
The method that the purpose of this invention is to provide a kind of effective multi-medium data copyright protection.This method is used with the copy that prevents file by format description part and the media data part while embed digital watermark at digital media file, has both guaranteed copyright owner's interests, has protected consumer's legitimate interests again.The total figure of method as shown in Figure 5.
Technical essential of the present invention is mainly reflected in the following aspects:
1, the issue of media piece: the copyright owner issues works by issuing web site.Issuing web site is responsible for digital media piece is propagated.And guarantee to have only validated user just can download by authorizing.Issuing web site can be embedded into the identification information of copyright owner and oneself mode by the digital watermarking of robust formula in the media file.
2, the mandate of validated user: after the user finds interested media piece, can apply for downloading.The user can pay by multiple electronic transaction mode, and for example credit card, bank card, mobile phone payment or the like also can adopt member system.As shown in Figure 3, after the Transaction Success, consumer's customizing messages will be embedded in the media file, and simultaneously, the format information of media file will be rewritten, and make media file become a kind of form that can't be discerned by any software.Then, in entire media file, embed the fragility digital watermarking, and add the file self-checking code, guarantee the integrality of media file.At this moment, this media file can only be downloaded use by this paying customer.Even if other users can obtain this file by illegal means, but because file layout can't be identified, they also can't use this file.
3, the use of media file: the consumer in first time playing media file, the identity information when system can require the user to confirm to buy, as shown in Figure 4, after identity validation, the player plug-in that bundles with media file will be activated.This plug-in unit has four functions:
(1) the computed hardware information of consumer is integrated in the player plug-in, just with player plug-in and the binding of consumer's current computer hardware system.
(2) the fragile digital watermark information in the detection media file is play if the discovery media file changes then refused.
(3) dynamically decipher the format information of media file, make media play software can discern the form of media file.
(4) requirement according to the copyright owner can provide multi-functional expansion.A media file will be paid expense one time if the copyright owner requires the every use of consumer, even if plug-in unit can be designed on same computing machine so, also will go issuing web site to resubmit at every turn when playing same media file and buy application.
The present invention proposes a kind of illegal copies and propagation new method that effectively prevent multimedia file.Different is with existing many methods, this method is except considering that the identity to the consumer is verified in media file download, and in media file, also embedded copyright owner, issuing web site and consumer's information, fully ensured copyright owner and consumer's interests.The advantage of this method is embodied in the following aspects:
1, digital media file is carried out copyright protection: by in media file, adding digital watermarking, copyright owner's information is embedded in the media file, makes that media file is undeniable combines closely with its author, played the effect of copyright protection.
2, the confidentiality of media file: the limitation of traditional file encryption measure is that the file of encrypting is in a single day decrypted, has just lost protective effect, and this all is very big loss concerning copyright owner and consumer.In the present invention, the decrypting process of media file is dynamic, and the behavior of deciphering occurs in player plug-in when delivering in the internal memory after with the data read in the media file.Data after the deciphering can not be kept on the hard disk in any form, and media file then all is the file of encrypting from start to finish.In addition, owing to be partially submerged into digital watermarking, and the format information of media file revised and hide,, thereby can't crack so the saboteur can't learn the form of media file at the media data of media file.And, owing to the digital watermarking algorithm and the employed key of algorithm that adopt are all maintained secrecy, so the saboteur also can't extract media data.
3, adopt the duplicate protection measure to prevent file modifying: media file is by embedding fragility digital watermarking and add the integrality that these two kinds different mechanism of self-checking code guarantee files,
4, prevent copy propagation: because playing media file need use special-purpose player plug-in, so also can't play even if the disabled user has obtained the copy of this media file.If the disabled user has also obtained player plug-in simultaneously, because player plug-in is to bind with the computer hardware information of validated user, so the disabled user still can not playing media file.The method of this anti-copy can very effectively fundamentally be stopped the illegal copies and the propagation of media file, has fully guaranteed copyright owner and consumer's legitimate rights and interests.Consider another situation, if the consumer wants to play this media file above the computing machine at other one, he only need reaffirm the identity information of oneself by issuing web site when playing so, system can download a new player plug-in automatically, and this plug-in unit will be bound with his present employed computer hardware
5, prevent that the user from denying: we also consider the another kind of illegal means of propagating, and that is exactly illegally to transcribe.For example, the normal playing media file of legitimate consumer uses video camera that the content on the computer screen is transcribed into another file then.Because the consumer is by having embedded consumer's self information in the media file that downloads to after the checking, so if the consumer illegally transcribes media file and propagates, he can not deny his illegal act so, because still contain the watermark of consumer's self information in the media data after transcribing, by the checking watermark information, just can find the infringer.
6, extensibility: the above use-pattern that we discuss is that the user hands over once expense, just can the repeat playing media file.A media file will be paid once expense if the copyright owner requires the every use of consumer, all will again pay in the time of insert design can being become allow the user use media file so at every turn and just can use.Another kind method is will lose efficacy after becoming to use insert design once, just must download new plug-in unit if the consumer thinks playing media file, so also can reach same billing purpose.
7, simple to operation: in order to prevent the illegal copies of media file, some method requires the user to buy special-purpose playback equipment, and some method provides special media file player.These modes or cause the extra financial burden of user, the broadcast custom that perhaps makes the user have to change oneself for playing media file removes to install a kind of new playout software, and the playout software that makes user oneself be had a preference for can not use.These methods can make that the user is difficult for accepting.Our method adopts provides player plug-in, the user is after having downloaded player plug-in, can use any playout software of oneself liking, this Plugin Mechanism is similar to the coding plug-in unit (for example DivX coding etc.) of some media files and the captions plug-in unit of movie file plug-in units such as (for example) VobSub, is accepted by users so the method is easier.
In sum, this new Digital medium protecting method and issue and broadcast mechanism can fully effectively guarantee copyright owner and consumer's rights and interests, gather around to have broad application prospects.
Description of drawings:
Issue of Fig. 1 digital media products and propagation figure,
Fig. 2 issues digital media file and rewrites file layout figure,
Fig. 3 encrypts figure to digital media file,
The playing process figure of Fig. 4 digital media file,
The guard method of Fig. 5 digital media distribution and broadcast is always schemed.
Embodiment:
The enforcement of this method mainly is made up of following three parts:
1, the issue of media piece.
If the copyright owner will directly be published to less than the Digital Media works through overprotection on the network, this media piece will be by bootlegging and propagation so, and copyright owner's interests will be encroached on.Issuing web site can carry out encryption to media file in issue Digital Media works, thereby has protected copyright owner's legitimate right.
Issuing web site can be responsible for the propaganda of Digital Media works.Have only by the validated user of authorizing and just can download use.Digital media file is expressed as Media-0, issuing web site is expressed as B, the identification information of issuing web site is expressed as Web-B.As shown in Figure 2, issuing web site will carry out following operation to digital media file:
S2-1 utilizes the mode that embeds robust digital watermark, embeds copyright owner's identification information in media file Media-0,
S2-2 utilizes the mode that embeds robust digital watermark, adds the identification information Web-B of issuing web site in media file Media-0,
S2-3 media file at this moment is expressed as Media-Wb,
S2-4 rewrites the file layout information of Media-Wb, makes it become a kind of form that can't be discerned by any software,
S2-5 generates the media play plug-in unit Plug-in-0 that is applicable to Media-Wb.
2, the encryption that authorizes media file of validated user.
After the user finds interested media piece, can apply for downloading.The consumer can pay by multiple electronic transaction mode, and for example credit card, bank card, mobile phone payment or the like also can adopt member system.The consumer is designated as A, consumer's identity information is designated as User-A.As shown in Figure 3, subscriber authorisation and media file encrypting step are as follows:
Digital media file Media-Wb on the S3-1 user A application download site B,
S3-2 user A and issuing web site B carry out electronic transaction,
If S3-3 Transaction Success then forward S3-4 to, otherwise forward S3-12 to,
S3-4 is embedded into the identity information User-A of consumer A among the media file Media-Wb by the mode of robust digital watermark,
S3-5 has comprised consumer's information at this moment among the Media-Wb, be expressed as Media-UaWb,
S3-6 embeds the fragility digital watermarking in entire media file Media-UaWb,
S3-7 adds the file self-checking code in media file Media-UaWb, guarantee the integrality of media file,
S3-8 embeds consumer's identity information User-A in playback of media files plug-in unit Plug-in-0,
S3-9 player plug-in Plug-in-0 this moment is expressed as Plug-in-A,
S3-10 adds self-checking code with the assurance integrality in Plug-in-A,
S3-11 allows user A downloads of media file Media-UaWb and forwards S3-13 to,
S3-12 informs the customer transaction failure,
The whole process of S3-13 finishes.
At this moment, media file Media-UaWb can only be downloaded by this paying customer A and use.Even if other users can obtain this file by illegal means, but because file layout can't be identified, they also can't use this file.
3, the playing process of digital media file.
Consumer A is in playing media file Media-UaWb, and as shown in Figure 4, whole process is as follows:
S4-1 consumer A playing media file Media-UaWb,
S4-2 Media-UaWb can carry out self check according to the self-checking code of file,
Do not forward S4-4 to if the S4-3 media file has destroyed, otherwise forward S4-11 to,
User-A information request among the S4-4 Media-UaWb is carried out identity validation to the user,
If S4-5 identity validation success then forward S4-6 to, otherwise forward S4-11 to,
The playback of media files plug-in unit Plug-in-A that bundlees among the S4-6 Media-UaWb is activated,
S4-7 Plug-in-A with the consumer computed hardware information (for example sequence number of the physical address of the sequence number of the sequence number of mainboard BIOS and version number, hard disk, network interface card, CPU or the like) be integrated in the player plug-in, just with player plug-in and the binding of consumer's current computer hardware system
S4-8 Plug-in-A encapsulates and regenerates self-checking code again.A player plug-in can only be moved on a computing machine, if the consumer has changed other computing machines, in playing media file, needs again download plug-in so and carries out new hardware binding,
S4-9 dynamically deciphers the format information of media file Media-UaWb.Player plug-in reading of data and recover original format information from media data file, make media play software (the Media Player of Microsoft company for example, the QuickTime Player of Apple company, RealOne Player of RealNetworks company or the like) can discern also playing media file data
S4-10 calls corresponding playout software broadcast Media-UaWb and forwards S4-12 to according to the form of media file,
S4-11 informs the user task failure,
The whole process of S4-12 finishes.
In addition, the requirement according to the copyright owner can provide multi-functional expansion.A media file will be paid expense one time if the copyright owner requires the every use of consumer, even if plug-in unit can be designed on same computing machine so, also will go issuing web site to resubmit at every turn when playing same media file and buy application.
The overall framework of this method as shown in Figure 5, concrete steps are as follows:
S5-1 copyright owner offers issuing web site with media file,
The S5-2 issuing web site carries out encryption and hidden file format information to media file,
The S5-3 issuing web site generates corresponding player plug-in according to the form of media file,
S5-4 consumer applies for the downloads of media file and pays cost of use,
If S5-5 Transaction Success then forward S5-6 to, otherwise forward S5-11 to,
S5-6 consumer's downloads of media file and player plug-in also begin playing media file,
The S5-7 player plug-in is carried out integrity checking to media file,
Do not forwarded to S5-9 if the S5-8 file changes, otherwise forward S5-11 to,
The S5-9 player plug-in is bound the computing machine of media file and consumer's use,
The S5-10 player plug-in is dynamically deciphered the format information of media file and is called corresponding player and play,
The whole process of S5-11 finishes.
Claims (3)
1, a kind of based on digital watermarking with provide the Digital Media protection of player plug-in and issue, player method, it is characterized in that: utilize robust digital watermark digital media piece to be carried out the protection of copyright protection and consumers' rights and interests; Utilize the method that embeds the fragility digital watermarking and add self-checking code that digital media file is carried out integrity protection; Format information by change and hiding digital media file makes media file to be identified and to use; Legitimate consumer is provided the playback of media files plug-in unit of binding mutually with the computer hardware of consumer's use; Player plug-in will dynamically be deciphered media file, so media file is in store with the form of encrypting from start to finish in consumer's computing machine, the data after the deciphering can not be kept on the hard disk in any form.
2, according to claim 1 based on digital watermarking with provide the Digital Media protection of player plug-in and issue, player method; its feature also is: insert plug-in unit and will dynamically decipher media file; the data of media file are responsible for reading by player plug-in; and in process of reading, be decrypted; decrypted data directly sends to playback of media files software; so; digital media file is in store with the form of encrypting from start to finish in consumer's computing machine, and the data after the deciphering can not be kept on the hard disk in any form.
3, a kind of digital media distribution and broadcast guard method comprise three key steps:
1) issue of works,
2) method user's the encryption that authorizes media file,
3) playing process of word media file; That is,
1) step of media piece issue is as follows:
S2-1 utilizes the mode that embeds robust digital watermark, embeds copyright owner's identification information in media file Media-O,
S2-2 utilizes the mode that embeds robust digital watermark, adds the identification information Web-B of issuing web site in media file Media-O,
S2-3 media file at this moment is expressed as Media-Wb,
S2-4 rewrites the file layout information of Media-Wb, makes it become a kind of form that can't be discerned by any software,
S2-5 generates the media play plug-in unit Plug-in-O that is applicable to Media-Wb;
2) step of the encryption that authorizes media file of validated user is as follows:
Digital media file Media-Wb on the S3-1 user A application download site B,
S3-2 user A and issuing web site B carry out electronic transaction,
If S3-3 Transaction Success then forward S3-4 to, otherwise forward S3-12 to,
S3-4 is embedded into the identity information User-A of consumer A among the media file Media-Wb by the mode of robust digital watermark,
S3-5 has comprised consumer's information at this moment among the Medi a-Wb, be expressed as Media-UaWb,
S3-6 embeds the fragility digital watermarking in entire media file Media-UaWb,
S3-7 adds the file self-checking code in media file Media-UaWb, guarantee the integrality of media file,
S3-8 embeds consumer's identity information User-A in playback of media files plug-in unit Plug-in-O,
S3-9 player plug-in Plug-in-O this moment is expressed as Plug-in-A,
S3-10 adds self-checking code with the assurance integrality in Plug-in-A,
S3-11 allows user A downloads of media file Media-UaWb and forwards S3-13 to,
S3-12 informs the customer transaction failure,
The whole process of S3-13 finishes;
3) step of the playing process of digital media file is as follows:
S4-1 consumer A playing media file Media-UaWb,
S4-2 Media-UaWb can carry out self check according to the self-checking code of file,
Do not forward S4-4 to if the S4-3 media file has destroyed, otherwise forward S4-11 to,
User-A information request among the S4-4 Media-UaWb is carried out identity validation to the user,
If S4-5 identity validation success then forward S4-6 to, otherwise forward S4-11 to,
The playback of media files plug-in unit Plug-in-A that bundlees among the S4-6 Media-UaWb is activated,
S4-7 Plug-in-A is integrated into the computed hardware information of consumer in the player plug-in, just with player plug-in and the binding of consumer's current computer hardware system,
S4-8 P1ug-in-A encapsulates and regenerates self-checking code again, a player plug-in can only be moved on a computing machine, if the consumer has changed other computing machines, in playing media file, need again download plug-in so and carry out new hardware binding
S4-9 dynamically deciphers the format information of media file Media-UaWb, and player plug-in reading of data and recover original format information from media data file can be discerned and the playing media file data media play software,
S4-10 calls corresponding playout software broadcast Media-UaWb and forwards S4-12 to according to the form of media file,
S4-11 informs the user task failure,
The whole process of S4-12 finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310113047 CN1275141C (en) | 2003-12-25 | 2003-12-25 | Protecting method for digital media distribution and play |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310113047 CN1275141C (en) | 2003-12-25 | 2003-12-25 | Protecting method for digital media distribution and play |
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| CN1635469A CN1635469A (en) | 2005-07-06 |
| CN1275141C true CN1275141C (en) | 2006-09-13 |
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| CN 200310113047 Expired - Fee Related CN1275141C (en) | 2003-12-25 | 2003-12-25 | Protecting method for digital media distribution and play |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104462878A (en) * | 2014-11-06 | 2015-03-25 | 上海精灵天下数字技术有限公司 | Content markup method and system for digital work |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000786B (en) * | 2006-01-10 | 2010-08-25 | 神州亿品科技有限公司 | Method for implementing train medium safety playing |
| CN101201883B (en) * | 2007-09-18 | 2010-04-14 | 北京赛柏科技有限责任公司 | Software protection method based on virtual machine |
| CN101453333B (en) * | 2008-10-16 | 2010-12-29 | 北京光线传媒股份有限公司 | Copyright recognition method, apparatus and system for media file |
| CN101894238B (en) * | 2010-08-09 | 2012-07-04 | 中国人民解放军海军工程大学 | Double authentication-based word document electronic seal system and method |
| CN102567658A (en) * | 2010-12-21 | 2012-07-11 | 新奥特（北京）视频技术有限公司 | DRM (digital rights management) application method in transaction platform |
| CN107256346B (en) * | 2017-05-22 | 2021-01-05 | 努比亚技术有限公司 | Method, system and storage medium for protecting file copyright |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104462878A (en) * | 2014-11-06 | 2015-03-25 | 上海精灵天下数字技术有限公司 | Content markup method and system for digital work |
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