CN108235152A - The transmission method of DRM application systems and DRM private datas - Google Patents
The transmission method of DRM application systems and DRM private datas Download PDFInfo
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- CN108235152A CN108235152A CN201810186267.2A CN201810186267A CN108235152A CN 108235152 A CN108235152 A CN 108235152A CN 201810186267 A CN201810186267 A CN 201810186267A CN 108235152 A CN108235152 A CN 108235152A
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- 241001269238 Data Species 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 title claims abstract description 15
- 238000001629 sign test Methods 0.000 claims abstract description 21
- 238000005538 encapsulation Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 abstract description 6
- 238000007726 management method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
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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]
- H04N21/80—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
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
-
- 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
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
-
- 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]
- H04N21/20—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
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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]
- H04N21/40—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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Storage Device Security (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of DRM application systems and the transmission method of DRM private datas.The DRM application systems include：Drm service end, at least one CDN server and at least one DRM terminals, wherein, drm service end is used to be added to DRM private datas in the video data for passing through encryption and/or signature processing according to setting rule, and the video data is sent to CDN server；CDN server is forwarded to DRM terminals for reception and after the video data is sliced；DRM private data of the DRM terminals for reception and in the video data according to setting Rule, to carry out sign test and/or decryption to the video data.By above-mentioned DRM application systems, Interface integration is done without drm service end and CDN server, the complexity of DRM projects is thereby reduced, reduces the workload of DRM Project in Operation, improve the efficiency of DRM Project in Operation.
Description
Technical field
The present embodiments relate to Digital Rights Management Technology field more particularly to a kind of DRM application systems and DRM are privately owned
The transmission method of data.
Background technology
Digital copyright management (Digital Rights Management, DRM) is as electronic audio frequency video frequency program is mutual
Wide-scale distribution in networking and a kind of new technology to grow up, the purpose is to protect the copyright of Digital Media, technically prevent
Only the bootlegging of Digital Media or make duplication highly difficult to a certain extent, end user must it is authorized after ability
Use Digital Media.
In the prior art, to the protection of video content generally in content distributing network (Content Delivery
Network, CDN) side realization, it is common that there are two types of methods：One kind is that video content is not encrypted in CDN sides, encrypted access video
URL (uniform resource locator) information, such method safety grade is relatively low, does not accomplish the protection to video content；Separately
One kind is that video content is cut into multiple slices by CDN sides, slice is encrypted respectively, protection of signing, and relevant DRM is privately owned
Data information is stored in and in the corresponding index file of slice, such method safety is higher ranked, but can be met in actually runing
To problems with：Slice it is corresponding with corresponding index file needs preservation, otherwise will be unable to be sliced be decrypted, sign test；DRM
System needs to do Interface integration processing with CDN, and CDN is allow to get corresponding DRM private datas from DRM system, if
CDN brands involved in practical DRM projects are more, then can increase corresponding Interface integration workload；If practical DRM projects branch
The terminal type held is more, and the video encapsulation form of support is more, then need to source video data carry out format conversion after again to cutting
Piece is encrypted, signs, and often increases a kind of encapsulation format and carry out one-time pad encryption, label again it is necessary to slice transformed to form
Name simultaneously the corresponding DRM private datas that obtain to generate index file, and then improve the DRM project implementations complexity and DRM
The workload of mesh operation.
Invention content
An embodiment of the present invention provides a kind of DRM application systems and the transmission method of DRM private datas, to optimize existing skill
The transmission method of DRM private datas in art reduces the complexity of the DRM project implementations, reduces the workload of DRM Project in Operation.
In a first aspect, an embodiment of the present invention provides a kind of DRM application systems, including：Drm service end, at least one CDN
Server and at least one DRM terminals, wherein：
The drm service end, for DRM private datas to be added to by encryption and/or signature according to setting rule
In the video data of reason, and the video data is sent to the CDN server；
The CDN server for receiving the video data, and is forwarded to institute after the video data is sliced
State DRM terminals；
The DRM terminals, for receiving the video data, and in the video data according to the setting Rule
DRM private datas, be embedded in public key in the DRM terminals to obtain and sign test carried out to the video data and/or to institute
It states after the application of drm service end authorizes and the video data is decrypted.
Second aspect, the embodiment of the present invention additionally provide a kind of transmission method of DRM private datas, including：
By drm service end according to setting rule by DRM private datas be added to will cross encryption and/or signature processing regard
Frequency sends the video data to CDN server in；
The video data is received, and be forwarded to DRM after the video data is sliced by the CDN server
Terminal；
The video data is received, and in the video data according to the setting Rule by the DRM terminals
DRM private datas, be embedded in public key in the DRM terminals to obtain and sign test carried out to the video data and/or to institute
It states after the application of drm service end authorizes and the video data is decrypted.
An embodiment of the present invention provides a kind of DRM application systems and the transmission method of DRM private datas, DRM applications systems
System includes drm service end, CDN server and at least one DRM terminals, will be added with DRM private datas by drm service end
Video data is sent to CDN server, and CND servers receive video data only can be forwarded to DRM ends by slicing treatment
End, the technology hand that DRM terminals receive video data and therefrom get DRM private datas to be authorized to the application of drm service end
Section so that drm service end, only need to be by video without with multiple CDN servers do Interface integration respectively in practical DRM projects
Data, which are sent to before CDN server, to be done source video content after one-time pad encryption and/or signature processing and additional DRM private datas
Work, and CDN server only need to be handled the video code flow received as clear stream, need not after carrying out sectioning to it
DRM private datas corresponding with slice are asked for drm service end again, so as to reduce the complexity of DRM projects, reduce DRM
The workload of Project in Operation improves the efficiency of DRM Project in Operation.
Description of the drawings
Fig. 1 is a kind of structure diagram of DRM application systems in the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of the transmission method of DRM private datas in the embodiment of the present invention two.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrated only in description, attached drawing.
It also should be noted that illustrate only for ease of description, in attached drawing part related to the present invention rather than
Full content.It should be mentioned that some exemplary embodiments are described before exemplary embodiment is discussed in greater detail
Into the processing or method described as flow chart.Although operations (or step) are described as the processing of sequence by flow chart,
It is that many of which operation can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of operations can be by again
It arranges.The processing can be terminated when its operations are completed, it is also possible to have the additional step being not included in attached drawing.
The processing can correspond to method, function, regulation, subroutine, subprogram etc..
Embodiment one
A kind of DRM application systems are present embodiments provided, are applicable to the situation of a variety of CDN brands involved in DRM projects,
As described in Figure 1, which includes：Drm service end 110, at least one CDN server 120 are (in figure for two
Show) and at least one DRM terminals 130 (with four to exemplify in figure).
Wherein, the DRM application systems that at least one CDN server refers to can include the CDN service of different CDN types of brand
Device, CDN brands refer to e.g. Shanghai Supreme Being connection, the Shanghai net businessmans such as place or ChinaCache brand, i.e., can be in DRM projects
CDN server including drm service end and multiple brands, the CDN server in the present embodiment refer to that complete CDN can be provided
The video content of DRM system side can be distributed to DRM terminals, be not necessarily referring to CDN sides certain by the CDN sides in the DRM projects of service
One CDN server node.
Drm service end 110 is handled for being added to DRM private datas according to setting rule by encryption and/or signature
Video data in, and the video data is sent to CDN server 120；
CDN server 120 for receiving the video data, and is forwarded to DRM after the video data is sliced
Terminal 130；
DRM terminals 130, for receiving the video data, and in the video data according to the setting Rule
DRM private datas, with obtain be embedded in public key in the DRM terminals video data is carried out sign test and/or to
The application of drm service end 110 is decrypted the video data after authorizing.
Drm service end 110 can select video content the three kinds of specific behaviour that only encrypt, only sign and not only encrypt but also sign
Make, selected in actual items any concrete operations depend on project specific needs, can usually select only encryption or only
The operation of signature.If drm service end 110 selects the operation that video content had not only been encrypted but also signed, DRM terminals 130
Need the operation to being decrypted after video content elder generation sign test.
After drm service end 110 is encrypted and/or signs to source video content according to setting rule, by DRM private datas
It is sent added in video data, then by the video data for carrying DRM private datas to CDN server 120, CDN server
After 120 receive the video data for carrying DRM private datas, video data is carried out to be forwarded to after slicing treatment
DRM terminals 130, can be according to the DRM carried in setting Rule video data after DRM terminals 130 receive video data
Private data, and then the video data is tested according to the public key that the acquisition of DRM private datas is embedded in the DRM terminals
It signs and/or applies authorizing to drm service end 110, after authorized, video data is decrypted by later, you can delete
Except after the DRM private datas in video data also former video data for user watch.
Wherein, during DRM terminals 130 are produced, various rules corresponding with drm service end 110 and Encryption Algorithm
It can be pre-written at relatively low cost, the public key at drm service end 110 can be also embedded in the drm service end certificate in terminal 130.
As a kind of specific embodiment of the present embodiment, when video data meets H.264/AVC video encoding standard,
Can be specially to be regarded based on NAL (Network Abstraction Layer, network abstract layer) unit to described by setting rule
Frequency is according to the rule for being encrypted and/or signing and add DRM private datas.
H.264/AVC the video elementary code stream data of Video coding are generally preserved with the form of NAL, are propped up with NAL unit
Coded data is held to transmit in the network based on packet-switch technology.
That is, drm service end 110 each crucial NAL unit is encrypted and/or signature processing after, will be with the key
The corresponding DRM private datas of NAL unit add thereafter, add private data label, form new NAL unit and are sent to CDN clothes
Business device 120 carries out content distribution.
CDN server 120 is distributed to DRM terminals 130 after the video data received is carried out slicing treatment, wherein, depending on
The least unit of frequency slicing treatment is also NAL unit, will not be private by the corresponding DRM of the video data in crucial NAL unit
There is data cutting to open.After DRM terminals 130 receive video data, crucial NAL unit therein is obtained, passes through private data mark
Label get DRM private datas corresponding with the key NAL unit, and then pre-buried public key is obtained according to the DRM private datas
It carries out sign test and/or applies authorizing to drm service end 110, content in the key NAL unit is carried out after authorized
Decryption, if the sign test decryption to the key NAL unit passes through, its additional DRM private data is deleted, and then obtain
Video data after reduction.
Specifically, drm service end 110 obtain source video data in a NAL unit as target NAL unit at
Reason, if it is determined that the target NAL unit is crucial NAL unit, specifically can be by judging the NAL unit of the target NAL unit
Type come determine whether be crucial NAL unit with the processing that is encrypted and/or signs, NAL unit type is in 1 NAL unit
It is non-IDR images, NAL unit type is is IDR images in 5 NAL unit, i.e., when NAL unit type is 1 and 5, the NAL
Unit can be determined that crucial NAL unit, and then to being encrypted in the key NAL unit and/or signature is handled, and will be with
The corresponding DRM private datas of the key NAL unit stamp private data label, are attached in the key NAL unit, new to generate
Crucial NAL unit be sent to CDN server 120.
When drm service end 110 handles source video data as unit of NAL unit, obtained by reading source video data
Target NAL unit, if the target NAL unit that target NAL unit has not been obtained or gets is not crucial NAL unit,
It returns to perform and reads source video data to obtain the operation of target NAL unit.
After CDN server 120 receives the video data of the transmission of drm service end 110, if the practical DRM project supports
Video data can be packaged format conversion by various video encapsulation format, such as can be converted into TS, MP4 and FLV
Etc. the encapsulation format for meeting H.264/AVC video encoding standard, after format conversion is packaged to video data, will be through
It crosses the transformed video data of encapsulation format and carries out slicing treatment, retransmit to DRM terminals 130.
After DRM terminals 130 receive video data, a NAL unit in video data is obtained as target NAL unit
It is handled, if it is determined that the target NAL unit is crucial NAL unit, that is, determines the NAL unit type of the target NAL unit
When being 1 and 5, then the DRM private datas that private data label is turned in the key NAL unit are obtained, and according to the privately owned numbers of the DRM
Sign test is carried out to the key NAL unit according to the public key that acquisition is embedded in DRM terminals 130 and/or is applied to drm service end 110
It authorizes, the key NAL unit is decrypted using the Encryption Algorithm to prestore later receiving to authorize, pass through in sign test decryption
The DRM private datas in the key NAL unit are deleted afterwards, are watched with the video data restored for user.
The video data that receives of the processing of DRM terminals 130 is equally as unit of NAL unit, and is to handle on one side, one
While the video content restored after processing is watched for user.DRM terminals 130 obtain mesh by reading the video data received
NAL unit is marked, if the target NAL unit that target NAL unit has not been obtained or gets is not crucial NAL unit, is returned
Receipt row reads the video data of reception to obtain the operation of target NAL unit.
If DRM terminals 130 do not get DRM private datas in crucial NAL unit or are obtaining drm service
End 110 fails to target NAL unit sign test and/or decryption after authorizing, then can believe in the onscreen cue mistake of DRM terminals 130
Breath, such as can be with no authorized, to indicate that user can not normally watch video content.
A kind of DRM application systems provided in this embodiment, by drm service end by the video added with DRM private datas
Data are sent to CDN server, and CND servers receive video data only can be forwarded to DRM terminals by slicing treatment,
The technological means that DRM terminals receive video data and therefrom get DRM private datas to be authorized to the application of drm service end,
So that Interface integration be done in drm service end respectively without the CDN server with multiple brands in practical DRM projects, need to only incite somebody to action
Video data is sent to being done to source video content before CDN server after one-time pad encryption and/or signature processing and additional DRM is privately owned
The work of data, and CDN server only need to be handled the video code flow received as clear stream, after carrying out sectioning to it
The index file that generation is only used for DRM terminal downloads video files can be distributed to DRM terminals, that is, not have to as needing in the prior art
The DRM private datas of each slice are asked for drm service end, correspondingly, DRM terminals no longer need to obtain from index file
DRM private informations are taken, avoids due to being sliced not corresponding with index file and occurs not asking slice progress sign test decryption
Topic.In the case of more brand CDN involved in DRM projects, the complexity of DRM projects is reduced, reduces DRM Project in Operation
Workload, improve the efficiency of DRM Project in Operation.
Embodiment two
A kind of transmission method of DRM private datas is present embodiments provided, is applicable to a variety of CDN involved in DRM projects
The situation of brand, applied to by DRM application systems provided in an embodiment of the present invention.As shown in Fig. 2, the method tool of the present embodiment
Body includes：
S210, it will be crossed at encryption and/or signature according to regular be added to DRM private datas of setting by drm service end
In the video data of reason, and the video data is sent to CDN server.
As a kind of specific embodiment of the present embodiment, the video data meets H.264/AVC video encoding standard,
Corresponding, setting rule can be：The video data is encrypted and/or signed based on NAL unit and to add DRM privately owned
The rule of data.
DRM private datas will be added in video data, and by the video according to setting rule by drm service end
Data are sent to CDN server, specially：
Target NAL unit in the video data is obtained by the drm service end；
By the drm service end if it is determined that the target NAL unit is crucial NAL unit, then to the target NAL
Data in unit are encrypted and/or sign, and will be described in matched with target NAL unit DRM private datas are used as
The additional data of target NAL unit forms new target NAL unit；
The new target NAL unit is sent to by the CDN server by the drm service end.
Wherein, crucial NAL unit is the NAL unit that NAL unit type is 1 and 5, the privately owned numbers of DRM in target NAL unit
According to privately owned label can be labeled with, so which partial data is DRM terminals can distinguish to be somebody's turn to do when receiving the target NAL unit
The DRM private datas of NAL unit.
When drm service end handles source video data as unit of NAL unit, target is obtained by reading source video data
NAL unit if the target NAL unit that target NAL unit has not been obtained or gets is not crucial NAL unit, returns
It performs and reads source video data to obtain the operation of target NAL unit.
S220, the video data is received, and forwarded after the video data is sliced by the CDN server
To DRM terminals.
If it can support various video encapsulation format, the transmission side of above-mentioned DRM private datas in practical DRM projects
Method, before by the CDN server, the video data (meeting H.264/AVC video encoding standard) is sliced,
It further includes：Format conversion is packaged to the video data by the CDN server, wherein, the encapsulation format is at least
Including any one of following：TS, MP4 and FLV.
I.e., it is possible to after being converted by CDN server to the encapsulation format of video data, then be sliced and sent
The operation of video data, wherein, encapsulation format is the video encapsulation form for meeting H.264/AVC video encoding standard.
S230, the video data, and the video counts according to the setting Rule are received by the DRM terminals
DRM private datas in, with obtain be embedded in public key in the DRM terminals video data is carried out sign test and/or
To the drm service end, application is decrypted the video data after authorizing.
Meet H.264/AVC video encoding standard in video data, and it is to the video based on NAL unit to set rule
When data are encrypted and/or sign and add the rule of DRM private datas, corresponding it can will be connect by the DRM terminals
The video data, and the DRM private datas in the video data according to the setting Rule are received, is embedded in obtaining
Public key in the DRM terminals carries out the video data sign test and/or after the application mandate of the drm service end to institute
It states video data to be decrypted, specially：
The video data is received, and obtain the target NAL unit in the video data by the DRM terminals；
By the DRM terminals if it is determined that the target NAL unit is crucial NAL unit, then the target NAL is obtained
DRM private datas in unit；
The public key being embedded in the DRM terminals is obtained to described according to the DRM private datas by the DRM terminals
Video data carries out sign test and/or after drm service end application authorizes, and the target NAL unit is decrypted, and
Delete the DRM private datas in the target NAL unit.
Likewise, crucial NAL unit is the NAL unit that NAL unit type is 1 and 5, DRM terminals can be according to privately owned number
The DRM private datas in the key NAL unit are got according to label.
The video data that DRM terminal processes receive equally be as unit of NAL unit, and be on one side handle, on one side
The video content restored after processing is watched for user.DRM terminals obtain target NAL by reading the video data received
Unit if the target NAL unit that target NAL unit has not been obtained or gets is not crucial NAL unit, returns to execution
The video data of reception is read to obtain the operation of target NAL unit.
If DRM terminals do not get DRM private datas in crucial NAL unit or are awarded obtaining drm service end
Fail after power to target NAL unit sign test and/or decryption, then can be in the onscreen cue error message of DRM terminals, it such as can be with
It is with no authorized, to indicate that user can not normally watch video content.
It is privately owned will to be added with DRM by drm service end for a kind of transmission method of DRM private datas provided in this embodiment
The video data of data is sent to CDN server, and CND servers receive video data and can be only forwarded to by slicing treatment
DRM terminals, the skill that DRM terminals receive video data and therefrom get DRM private datas to be authorized to the application of drm service end
Art means so that Interface integration is done in drm service end respectively without the CDN server with multiple brands in practical DRM projects, only
Source video content need to be done before video data is sent to CDN server one-time pad encryption and/or signature processing after and add
The work of DRM private datas, and CDN server only need to be handled the video code flow received as clear stream, it is cut
Generation, which is only used for the index files of DRM terminal downloads video files, after piece operation can be distributed to DRM terminals, that is, not have to as existing
It needs to ask for each DRM private data being sliced to drm service end in technology, correspondingly, DRM terminals are no longer needed from index
DRM private informations are obtained in file, avoids due to being sliced not corresponding with index data and occurs that sign test can not be carried out to slice
And/or the problem of decryption.In the case of more brand CDN involved in DRM projects, the complexity of DRM projects is reduced, is reduced
The workload of DRM Project in Operation improves the efficiency of DRM Project in Operation.
The transmission method of above-mentioned DRM private datas is performed, tool by the DRM application systems that any embodiment of the present invention provides
There is the corresponding advantageous effect of DRM application systems.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of DRM application systems, which is characterized in that including, drm service end, at least one CDN server and at least one
DRM terminals, wherein：
The drm service end, for DRM private datas to be added to what is handled by encryption and/or signature according to setting is regular
In video data, and the video data is sent to the CDN server；
The CDN server is forwarded to described for receiving the video data, and after the video data is sliced
DRM terminals；
The DRM terminals, for receiving the video data, and in the video data according to the setting Rule
DRM private datas are embedded in public key in the DRM terminals and sign test are carried out to the video data and/or to described to obtain
The application of drm service end is decrypted the video data after authorizing.
2. system according to claim 1, which is characterized in that the video data meets H.264/AVC Video coding mark
It is accurate.
3. system according to claim 2, which is characterized in that the setting rule includes：
The video data is encrypted and/or is signed based on NAL unit and is added the rule of DRM private datas.
4. a kind of transmission method of DRM private datas, applied to such as claim 1-3 any one of them DRM application systems,
It is characterized in that, including：
DRM private datas are added to according to setting rule by drm service end by the video counts that will cross encryption and/or signature processing
It is sent in, and by the video data to CDN server；
The video data is received by the CDN server, and DRM ends are forwarded to after the video data is sliced
End；
The video data, and the DRM in the video data according to the setting Rule are received by the DRM terminals
Private data is embedded in public key in the DRM terminals and sign test is carried out to the video data and/or to the DRM to obtain
The video data is decrypted after server-side application mandate.
5. according to the method described in claim 4, it is characterized in that, the video data meets H.264/AVC Video coding mark
It is accurate.
6. according to the method described in claim 5, it is characterized in that, the setting rule includes：
The video data is encrypted and/or is signed based on NAL unit and is added the rule of DRM private datas.
It is 7. according to the method described in claim 6, it is characterized in that, regular by the privately owned numbers of DRM according to setting by drm service end
According to added to that will cross in the video data of encryption and/or signature processing, and the video data is sent to CDN server, wrap
It includes：
Target NAL unit in the video data is obtained by the drm service end；
By the drm service end if it is determined that the target NAL unit is crucial NAL unit, then to the target NAL unit
In data be encrypted and/or sign, and will be with the matched DRM private datas of the target NAL unit as the target
The additional data of NAL unit forms new target NAL unit；
The new target NAL unit is sent to by the CDN server by the drm service end.
8. the method according to the description of claim 7 is characterized in that the video data, and root are received by the DRM terminals
According to the DRM private datas in video data described in the setting Rule, to obtain the public key being embedded in the DRM terminals
Sign test is carried out to the video data and/or the video data is decrypted after the application mandate of the drm service end,
Including：
The video data is received, and obtain the target NAL unit in the video data by the DRM terminals；
By the DRM terminals if it is determined that the target NAL unit is crucial NAL unit, then the target NAL unit is obtained
In DRM private datas；
The public key being embedded in the DRM terminals is obtained to the video according to the DRM private datas by the DRM terminals
Data carry out sign test and/or the target NAL unit are decrypted, and delete institute after the application mandate of the drm service end
State the DRM private datas in target NAL unit.
9. according to the method described in claim 4, it is characterized in that, by the CDN server by the video data into
Before row slice, further include：
Format conversion is packaged to the video data by the CDN server.
10. according to the method described in claim 9, it is characterized in that, the encapsulation format includes at least following any one：TS、
MP4 and FLV.
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