CN107018432A - The Licensing Methods and equipment of media content - Google Patents
The Licensing Methods and equipment of media content Download PDFInfo
- Publication number
- CN107018432A CN107018432A CN201710194159.5A CN201710194159A CN107018432A CN 107018432 A CN107018432 A CN 107018432A CN 201710194159 A CN201710194159 A CN 201710194159A CN 107018432 A CN107018432 A CN 107018432A
- Authority
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- China
- Prior art keywords
- media content
- block chain
- license
- user
- identification information
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—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
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
-
- 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
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
-
- 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
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
Landscapes
- Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Storage Device Security (AREA)
Abstract
The embodiment of the present application provides a kind of media content Licensing Methods and equipment based on block chain technology, in the media content Licensing Methods, the media content license request sent by block chain node receiving end/sending end, the media content license request includes media content identification information and user identity information；The block chain node returns to temporary license issuing according to the media content identification information and user identity information to the transmitting terminal, and the temporary license issuing includes decruption key and the temporary license issuing time of the media content.Media content Licensing Methods, by introducing block chain technology so that the media content Admission Control mechanism of decentralization is accomplished.
Description
Technical field
The application is related to rights management technology, more particularly to a kind of media content Licensing Methods and equipment.
Background technology
Currently, internet has become important video content communications media.Transmission on Internet films and television programs in quantity, more
All there is stronger advantage compared with traditional media in terms of new speed, the audient of online viewing films and television programs is more and more.At the same time,
The convenience of internet broadcasts the puzzlement in terms of platform all brings copyright protection to the copyright owner of films and television programs and audio frequency and video.
Under internet environment, the copyright of films and television programs how is protected, healthy and orderly audio frequency and video industry mandate chain is set up, sound is reduced
Video broadcasts legal risk of platform etc., is all urgent problem to be solved.
Existing video content copyright protection technology is typically based on password theory, and its mode is using key that video is literary
Part stream encryption makes unauthorized user equipment can not parse video content into ciphertext.User is after online ordering is completed, user equipment
Key is asked to key management system, key management system completes authenticating user identification rear line equipment " return " key" information,
User equipment watches the video content after encrypted video file is decrypted using key information.
The key management mechanism of centralization is used on current technology framework, once this key management system is attacked,
Then whole video system will be unable to normal work.
The content of the invention
In view of this, the embodiment of the present application proposes a kind of media content Licensing Methods and equipment based on block chain technology.
First aspect there is provided a kind of Licensing Methods of media content, including：
The media content license request that block chain node receiving end/sending end is sent, the media content license request includes matchmaker
Body content identification information and user identity information, wherein transmitting terminal can be client or media content distribution system, user
Identification information can be ID and/or device id, and content identification information can be content ID and/or content key ID, authorize
It can also further comprise in request：Other equipment information, such as public key, device certificate, superior certificates information, superior certificates are to current
Certificate signature etc..
The block chain node is returned according to the media content identification information and user identity information to the transmitting terminal
Temporary license issuing, when the temporary license issuing includes decruption key and the temporary license issuing time, wherein temporary Authorization of the media content
Between can be the decruption key effective time.This method, by introducing block chain mechanism so that in the media of decentralization
Hold Admission Control mechanism accomplished,
Optionally, methods described also includes：The block chain node determines not storing and the media content identification information
Authorized user message corresponding with user identity information；
The block chain node is distributed according to the media content identification information and user identity information from media content
System obtains the order record information of the media content of the user, is permitted temporarily according to order record information generation is described
Can.Specifically, the block chain node can be by the order record between block chain node and the media content distribution system
Query interface inquires about the order record information of the media content of the user, if media content distribution system determines there is described
User is to the order record of the media content, then block chain node can be according to order record generation temporary Authorization.Which
It can ensure user after the success of subscribing for media content, you can viewing media content, reduce due to block chain authorized user message
User needs to wait experience problem caused by ablation process is long.
Optionally, methods described also includes：
The media content license request that the transmitting terminal is sent is received again, and the media content license request includes media
Content identification information and user identity information；
According to the media content identification and user identity information determine to be stored with the media content identification information and
The corresponding authorized user message of user identity information；
According to the authorized user message, formal license is generated, the formal license includes the decryption of the media content
Key；
Formal license is returned to the transmitting terminal.
Optionally, methods described also includes：
The authorized user message write request that the media content distribution system is sent is received, by the authorized user message
It is written in the block chain node.Wherein, authorized user message write-in block chain is included：Select either block chain link
Authorized user message is write the block chain node by point, application；The block chain that the block chain node initiates user's authority record is write
Enter process；The block chain node other nodes into network initiate common recognition process, when the block chain that quantity term is met in network
When node is reached an agreement to user's order record, user's order record is preserved.
Second aspect, also provides a kind of Licensing Methods of media content, applied in client, including：
Media content license request is sent to block chain node, the media content license request includes media content identification
Information and user identity information；
The block chain node is received according to what the media content identification information and user identity information were returned temporarily to be permitted
Can, the temporary license issuing includes decruption key and the temporary Authorization time of the media content.
Optionally, methods described also includes：
The media content subscription request is sent to media content distribution system, the media content subscription request includes matchmaker
Body content identification and user identity information；
The media content for receiving the content delivering system return orders response and corresponding with the media content identification
The media content of encryption.
Optionally, methods described also includes：
Before the temporary Authorization time expires, media content license request is sent again to the block chain node,
The media content license request includes the identification information and user identity information of the media content；
The formal license that the block chain node is returned is received, the decryption that the formal license includes the media content is close
Key.
Optionally, the media content of the encryption is the partial content of the media content.Wherein, return encryption stream when
It is long to need to be set according to block chain write performance, i.e., certain allowance is added on the basis of the block chain write-in deadline, such as
Current block chain ablation process needs 10 minutes, and allowance is set to 5 minutes, then returns to the encryption stream of 15 minutes.Which, in visitor
Family end just carries out the push of remaining video stream when obtaining formal license, can so prevent client after being attacked by not
Disconnected application temporary license issuing realizes that the situation of complete video content viewing occurs.
The third aspect, also provides a kind of Licensing Methods of media content, including：
Media content distribution system receives the media content license request that client is sent, the media content license request
Including media content identification information and user identity information；
The media content distribution system is according to the media content identification information and user identity information to the client
End returns to temporary license issuing, and the temporary license issuing includes decruption key and the temporary license issuing time of the media content.
Optionally, methods described also includes：
The media content distribution system receives the media content subscription request that client is sent, and the media content is ordered
Request bag contains media content identification and user identity information；
The media that media content orders response and encryption corresponding with the media content identification are returned to the client
Content, the media content of encryption can be whole media contents or partial media content.
Optionally, when the media content that media content orders response and encryption is returned to the client, the side
Method also includes：
Authorized user message is write block chain by media content distribution system to block chain node application.
Optionally, before temporary license issuing is returned to the client, methods described also includes：
Media content distribution system sends temporary license issuing request and the media content of the user to block chain node
Order record, wherein the order record of the media content of the user can be actively send or receive institute
State and sent after the request of block chain node；
Media content distribution system receives the block chain node and remembered according to the order of the media content of the user
The temporary license issuing that playback is returned.
Optionally, methods described also includes：
Before the temporary license issuing expires, the media content license request that the client is sent is received again, it is described
Media content license request includes the media content identification and the user identity information；
Formal license request is sent to the block chain key management node, the formal license request bag contains media content
Mark and user identity information；
The formal license that the block chain node is returned is received, decryption of the formal license comprising the media content is close
Key；
The formal license is returned to the client.
In this method, client is permitted not directly to block chain node application media content, but via media content point
Hair system application media content is permitted, can prevent malicious client from attacking block chain link point.
Fourth aspect there is provided a kind of block chain node, including：
Receiver, the media content license request sent for receiving end/sending end, the media content license request includes
Media content identification information and user identity information；
Transmitter, it is interim for being returned according to the media content identification information and user identity information to the transmitting terminal
License, the temporary license issuing includes decruption key and the temporary license issuing time of the media content.
Optionally, the block chain node also includes：
Processor, believes for determining that the block chain node is not stored with the media content identification information and user's mark
Cease corresponding authorized user message；According to the media content identification information and user identity information from media content distribution system
The order record information of the media content of the user is obtained, the temporary license issuing is generated according to the order record information.
Optionally, the receiver is additionally operable to receive the media content license request that the transmitting terminal is sent again, described
Media content license request includes media content identification information and user identity information；
The processor is additionally operable to determine that the block chain node is stored with and the media content identification information and user
Authorized user message corresponding to identification information, according to the authorized user message, generates formal license, the formal license includes
The decruption key of the media content；
The transmitter is additionally operable to return to formal license to the transmitting terminal.
There is provided a kind of client terminal device in terms of 5th, including：
Transmitter, for sending media content license request to block chain node, the media content license request includes
Media content identification information and user identity information；
Receiver, is returned for receiving the block chain node according to the media content identification information and user identity information
The temporary license issuing returned, the temporary license issuing includes decruption key and the temporary Authorization time of the media content.
Optionally, the transmitter also sends the media content subscription request, the matchmaker to media content distribution system
Hold subscription request in vivo and include media content identification and user identity information；
The receiver also receive the media content that the content delivering system returns order response and with the media
Hold the media content of the corresponding encryption of mark.
Optionally, before the temporary Authorization time expires, the transmitter also sends matchmaker to the block chain node
Hold license request in vivo, the media content license request includes the identification information of the media content and the mark of the user
Information；
The receiver also receives the formal license that the block chain node is returned, and the formal license includes the media
The decruption key of content.
Optionally, the media content for the encryption that the receiver is received is the partial content of the media content.
6th aspect, also provides a kind of media content distribution system, including：
Receiver, the media content license request for receiving client transmission, the media content license request includes
Media content identification information and user identity information；
Transmitter, it is interim for being returned according to the media content identification information and user identity information to the client
License, the temporary license issuing includes decruption key and the temporary Authorization time of the media content.
Optionally, the receiver, is additionally operable to receive the media content subscription request that client is sent, the media content
Subscription request includes media content identification and user identity information；
The transmitter, be additionally operable to the client return media content order response and with the media content identification
The media content of corresponding encryption.
Optionally, when transmitter returns to the media content that media content orders response and encryption to the client,
User's authority record is also write block chain by the transmitter to block chain node application.
Optionally, the transmitter is also sent in the media of temporary license issuing request and the user to block chain node
The order record of appearance；
The receiver is additionally operable to receive the block chain node according to the order of the media content of user note
The temporary license issuing that playback is returned.
Optionally, before the temporary license issuing expires, the receiver also receives the matchmaker that the client is sent again
Hold license request in vivo, the media content license request includes the media content identification and the user identity information；
The transmitter also sends formal license request, the formal license request to the block chain key management node
Include media content identification and user identity information；
The receiver also receives the formal license that the block chain node is returned, and the formal license includes the media
The decruption key of content；
The transmitter returns to the formal license to the client.
7th aspect, also provides a kind of block chain node, it is characterised in that including：
Entitlement management module, the media content license request sent for receiving end/sending end, the media content license please
Ask including media content identification information and user identity information；According to the media content identification information and user identity information to
The transmitting terminal returns to temporary license issuing, and the temporary license issuing includes decruption key and the temporary license issuing time of the media content.
Optionally, the block chain node also includes：
User management module, for determining not recording and the media content identification information and user identity information pair locally
The authorized user message answered；
The entitlement management module is additionally operable to the determination result based on the user management module, according to the media content
Identification information and user identity information obtain the order record information of the media content of the user from media content distribution system,
The temporary license issuing is generated according to the order record information.
Optionally, the entitlement management module be additionally operable to receive media content license that the transmitting terminal sends again please
Ask, the media content license request includes media content identification information and user identity information；
The user management module, is additionally operable to determine that local record has and the media content identification information and user's mark
The corresponding authorized user message of information；
Determination result of the entitlement management module based on the user management module, according to the authorized user message,
Formal license is generated, formal license is returned to the transmitting terminal, the formal license includes the decruption key of the media content.
Eighth aspect there is provided a kind of block chain node, including：Including memory, for storing computer executable program
Code, and processor are used to perform the program code that can perform in memory；
Wherein described program code includes instruction, and when being instructed described in the computing device, the instruction makes the area
The Licensing Methods of the executable media content as described above described in aspect of block chain node.
There is provided a kind of media content distribution system in terms of 9th, including：Including memory, it can be held for storing computer
Line program code, and processor are used to perform the program code that can perform in memory；
Wherein described program code includes instruction, and when being instructed described in the computing device, the instruction makes the matchmaker
Body content delivering system performs the Licensing Methods of media content as described above described in aspect.
There is provided a kind of client terminal device in terms of tenth, including：Including memory, for storing computer executable program
Code, and processor are used to perform the program code that can perform in memory；
Wherein described program code includes instruction, and when being instructed described in the computing device, the instruction makes the visitor
Family end device performs the Licensing Methods of media content as described above described in aspect.
There is provided a kind of computer program product, including executable program code, wherein described program code for tenth one side
Including instruction, when being instructed described in the computing device, the instruction makes the block chain node, media content distribution system
The Licensing Methods of the executable media content as described above described in aspect of system, client terminal device.
12nd aspect, the embodiment of the present application provides a kind of computer-readable storage medium, for saving as above-mentioned block chain
Node, media content distribution system, the computer software instructions used in client terminal device, it, which is included, is used to perform above-mentioned aspect institute
The program of design.
In the Licensing Methods of the media content of the present embodiment, block chain technology is introduced so that the media content of decentralization
Admission Control mechanism is accomplished.Block chain is the distributed data base system participated in by multiple nodes, and its feature is to record
User's authority record in block can not be changed and can not also forged, and the authority record of user is protected by each block chain node
Deposit, even if either block chain node is under attack, also do not interfere with whole admission process, it is ensured that media content license safety
Property.
Brief description of the drawings
Fig. 1 is the system architecture diagram of the Licensing Methods implementation of the media content of the embodiment of the present application；
Fig. 2 is the media content Licensing Methods interaction diagrams of the embodiment of the application one；
Fig. 3 is the media content Licensing Methods interaction diagrams of another embodiment of the application；
Fig. 4 is the media content Licensing Methods interaction diagrams of the another embodiment of the application；
Fig. 5 is the network equipment infrastructure block diagram of the Licensing Methods implementation of the media content of the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is described.
Fig. 1 is the system architecture diagram of the Licensing Methods implementation of the media content of the embodiment of the present application, as shown in figure 1, this is
System includes block chain key management node 110, media content distribution system 120, client 130 and encoder 130.Wherein,
Block chain management node is mainly responsible for key management, subscriber information management, empowerment management etc., and media content distribution system is responsible for matchmaker
Body content subscription and media content distribution, client 130 are played for media content, and encoder is mainly responsible for media content
Coding is encrypted.In the present system, as shown in figure 1, block chain management node can functionally be divided into key management mould
Block 111, user management module 112, entitlement management module 113 and block chain writing module 114.The major function description of each module
It is as follows：
Key management module 111：The management and storage of main responsible key information, key is provided with right to encoder 104
Media content is encrypted, and generates encrypted media streams, while to entitlement management module " return " key" information in licensing process,
In application scheme, the module is also responsible for responding the key request of entitlement management module, including temporary key please with formal key
Ask.
User management module 112：The management and storage of main responsible user profile, externally provide looking into for user's authority record
Ask with writing block chain, in application scheme, the module is also responsible for responding user's authority record of media content distribution system
Write user's authority record inquiry request of the request of block chain and entitlement management module.
Entitlement management module 113：The main media content license request for being responsible for response terminal device, in application scheme
In, the module except with addition to the interacting of terminal device, while passing through the school that user's order record verification interface completes online ordering
Test.
Block chain writing module 114：It is main to be responsible for writing user's authority record in block chain, sent out in block chain network
Common recognition process is played, user's authority record is write into block chain after reaching an agreement.
It should be noted that the block chain key management node 110 in the embodiment of the present application is real in the application according to it
The function of applying in example is named, block chain key management node 110 be substantially exactly one in block chain network commonly
Block chain node.It should be noted that the implication that two words of license are authorized in the application is consistent, can mutually it use instead.
Fig. 2 is the media content Licensing Methods interaction diagrams of the embodiment of the present application one, as shown in Fig. 2 the media content
Licensing Methods include：
Step 201：User initiates media content subscription request by client 110 to media content distribution system 120.
It should be noted that media content can be the contents such as video, audio, picture, books.
Step 202：Media content distribution system 120 completes user content subscription request processing procedure, then selects block
A node in chain network simultaneously is applied this user authority record writing block chain to the user management module 112 of the node
It is middle to be preserved.
Step 203：User management module 112 calls block chain writing module 114, initiates the block chain of user's authority record
Ablation process.
Step 204：The every other node into network of block chain writing module 114 initiates common recognition process, the common recognition process
Include the legitimacy inspection to user's authority record, when the node that quantity term is met in network reaches to user's order record
Into after consistent, it is believed that this user's authority record is legal, and preserved in the data of record write-in node.
Step 205：Block chain writing module 114 returns to write-in knot after ablation process is completed to user management module 112
Really.
Step 206：User management module 112 returns to user's authority record to media content distribution system 120 and write successfully
Response.
Step 207：Media content distribution system 120 returns to client 130 and orders success response message, adds while returning
Close Media Stream.
Step 208：Client 130 obtains the key ID information in Media Stream, and is locally playing out query with permission,
Broadcasting license contains the key information that correspondence media content encrypts file, if locally having played license, and directly decryption adds
Close Media Stream is played out；Otherwise it is transferred to step 209.
Step 209：The transmission content permission request message of client 130 is to entitlement management module 113.
Step 210：Entitlement management module 113 verification request legitimacy, and in request device certificate checking set
Standby legitimacy.
Step 211：Entitlement management module 113 initiates user's authority record inquiry request to user management module 112.
Step 212：User management module 112 inquires about corresponding user's authority record in block chain.
Step 213：User's authority record Query Result is returned to entitlement management module 113 by user management module 112.
Step 214：Entitlement management module 113 verifies user's authority record Query Result, if active user's authority record is closed
Method, then into step 215, otherwise return to license request failed message to client 130.
Step 215：Entitlement management module 113 sends cipher key request information to key management module 111.
Step 216：Key management module 111 returns to the key information of correspondence media content to entitlement management module 113.
Step 217：Entitlement management module 113 is according to the key information of return, generation license.
Step 218：The license of generation is returned to client 130 by entitlement management module 113.
Step 219：Client 130, which is received, to be permitted and parses after key, and encrypted media streams are decrypted with broadcasting.
In the Licensing Methods of the media content of the present embodiment, block chain technology is introduced so that the media content of decentralization
Admission Control mechanism is accomplished.Block chain is the distributed data base system participated in by multiple nodes, and its feature is to record
User's authority record in block can not be changed and can not also forged, and the authority record of user is protected by each block chain node
Deposit, even if either block chain node is under attack, also do not interfere with whole admission process, it is ensured that media content license safety
Property.
For the scene of user's online ordering media content, after application block chain technology, in client and video distribution system
System is completed after media content subscription process process, will not return to the Media Stream for ordering success response and encryption to client immediately,
But wait position catenary system to complete just to return to order to client after correspondence user authority record write-in block chain successfully to ring
Answer and Media Stream, due to including multiple nodes in block chain network, it is necessary to meet ability after a number of node is reached an agreement
The record is write into block chain and persistence is completed, and in order to ensure security, the complexity of common recognition algorithm needs to ensure, this is just
So that completing the time-consuming of block chain persistence process typically at least needs 10 minutes or so, certain shadow is caused to Consumer's Experience
Ring.
Therefore, the embodiment of the present application two further optimizes the Licensing Methods of media content, in embodiment two, media content
Dissemination system is after the processing of user's subscription request is completed, to client while user's authority record is write block chain by application
Return and order success message, returning to block chain without waiting for user management module writes success response.
Increase user's order record verification interface of media content distribution system and entitlement management module, entitlement management module
When user's authority record inquires about failure, user is initiated to media content distribution system by the interface and orders verification request.
Increase transitional temporary Authorization distribution mechanisms, entitlement management module writes according to the authorized user message of block chain
The length of time, sets the temporary Authorization term of validity, and client initiates duly authorized request again after term of validity arrival.
Fig. 3 is the media content Licensing Methods interaction diagrams of the embodiment of the present application two, as shown in figure 3, the media content
Licensing Methods include：
Step 301：User initiates media content subscription request by client 130 to media content distribution system 120.
Step 302：Media content distribution system 120 enters step after completing the media content subscription request processing procedure of user
Rapid 303, while performing block chain ablation process, block chain ablation process includes：
302a, a node in selection block chain network are simultaneously applied this to the user management module 112 of the node
Preserved in user's authority record write-in block chain；
302b, user management module 112 call block chain writing module 114, and the block chain for initiating user's authority record is write
Enter process；
302c, block chain the writing module 114 every other node into network initiate common recognition process, and the common recognition process includes
Legitimacy to user's authority record is examined, when the node that quantity term is met in network reaches one to user's order record
After cause, it is believed that this user's authority record is legal, and preserved in the data of record write-in node.
It should be noted that said process is synchronous progress with subsequent processes in this programme, i.e., without waiting for upper
The process of stating performs subsequent step again after terminating.
Step 303：Media content distribution system 120 returns to client 130 and orders success response message, adds while returning
Close Media Stream.
It should be noted that the encrypted media streams returned can be total medium stream or the part of media content
Media Stream, such as be returned only to 10 minutes Media Streams according to the block chain write time.
Step 304：Client 130 obtains the key identification in Media Stream, and plays out license lookup local, plays
License contains the key information that correspondence media content encrypts file, if locally having played license, directly according to local close
Key decrypts encrypted media streams；Otherwise it is transferred to step 305.
Step 305：Client 130 sends permission request message to entitlement management module 113, carries and following believes in the message
One or more in breath：
Facility information：Public key, device certificate, superior certificates information, superior certificates are to signature of current certificates etc.；
User identity information：Device identification or user's mark
Media content information：Content identification or content key mark etc.
It should be noted that being not limited to above- mentioned information in the present embodiment, other can be also increased on the basis of this programme
Information.
Step 306：The legitimacy of the verification request of entitlement management module 113, including：Verify integrality, the word of message structure
The legitimacy of segment data, the device certificate in request verifies the legitimacy of equipment.
Step 307：Entitlement management module 113 initiates user's authority record inquiry request to user management module 112, should ask
Message is asked to need Portable device mark and content identification etc..
This embodiment scheme is not limited to only include above- mentioned information.
Step 308：The user that user management module 112 inquires about the apparatus bound according to device identification in block chain marks
Know, corresponding user's authority record is inquired about according to user's mark and content identification, and letter is identified comprising user in Query Result
Breath.
This embodiment scheme is not limited to only include above- mentioned information.
Step 309：User's authority record Query Result is returned to entitlement management module 113 by user management module 112.
Step 310：Entitlement management module 113 verifies user's authority record Query Result, if user's authority record is inquired about
As a result it is sky, then into step 311.
Step 311：Entitlement management module 113 initiates the verification of user's order record to media content distribution system 120 asks,
Request message needs Portable device to identify, content identification, user's mark etc..
This embodiment scheme is not limited to only include above- mentioned information.
Step 312：Media content distribution system 120 is ordered according to device identification, content identification, user mark inquiry user
Record information, and return to corresponding user's order record information and media content distribution system itself to entitlement management module 113
Certificate information.
This embodiment scheme is not limited to only include above- mentioned information.
Step 313：Entitlement management module 113 is verified to the certificate of video distribution system, and phase is verified after being verified
The user's order record information answered.
Step 314：After the verification of user's order record passes through, entitlement management module 113 is sent to key management module 111 faces
When cipher key request information, the solicited message need to carry key identification and license request type id field, show that this request is
Temporary key request message.
Step 315：After the analysis request message of key management module 111, key information, Ran Hougen are searched according to key identification
The term of validity of temporary key is set according to block chain write performance, i.e., added necessarily on the basis of block chain writes the deadline
Allowance, such as current block chain ablation process need 10 minutes, and allowance is set to 5 minutes, then the term of validity of the temporary key is 15
Minute, it should be noted that the example above is only a special case of the present embodiment, other setting conditions on the basis of this programme
The deformation of this programme should be belonged to, also in protection domain.
Step 316：Key management module 111 returns to temporary key information to entitlement management module.
Step 317：Entitlement management module 113 generates temporary license issuing according to the temporary key information of return.
Step 318：The temporary license issuing of generation is returned to client 130 by entitlement management module 113.
Step 319：Client 130 receives temporary license issuing message and parsed after key, and current paid-in encryption is flowed
It is decrypted, while start temporary license issuing term of validity detection process, when the temporary license issuing term of validity will expire, such as 14 minutes,
The numeral is only for example, and the other configurations on the basis of this programme should also be as belonging to the protection domain of the application, and client 130 is opened
Dynamic formal license request.It should be noted, in the present embodiment, temporary license issuing includes the temporary license issuing term of validity, once cross
The term of validity, temporary license issuing is failure, then client can not be continuing with the decruption key of the temporary license issuing.
Step 320：Client 130 initiates formal license solicited message to entitlement management module 113.
The processing procedure of step 321- steps 325 is identical with step 306- steps 310, will not be repeated here.
Step 326：After the verification of user's authority record passes through, entitlement management module 113 is sent just to key management module 11
Formula cipher key request information, the solicited message need to carry key identification and order relations, and the order relations are used to show user couple
Effective viewing time (being determined according to user's subscription type) of the content, while carrying license request type id field, shows
This request is formal secret key request message.
Step 327：After the analysis request message of key management module 111, according to key identification lookup key information, and according to
Order relations set the key term of validity, generate formal key information.
Step 328：The formal key information of key management module 111 returns to entitlement management module 113.
Step 329：Entitlement management module 113 generates formal license message according to the formal key information of return.
Step 330：The formal license message of generation is returned to client 130 by entitlement management module 113.
Main improvement in above-mentioned flow is：Step 302, step 303 are parallel processings, are walked without waiting for completion
Rapid 302a-302c is executable step 303；Temporary license issuing mechanism is also introduced simultaneously, is set and faced according to the write performance of block chain
When the term of validity permitted, user's order record verification between increase entitlement management module 113 and media delivery service 120 connects
Mouthful, client 130 increases the treatment mechanism to temporary license issuing.
It should be noted that in the present embodiment, the difference of temporary key information and formal key information is that the term of validity is
Different, temporary key has term of validity time restriction, and formal key does not have term of validity time restriction.
The media content Licensing Methods of the present embodiment, by introducing temporary license issuing mechanism, it is ensured that user is completed in media
Hold after ordering, you can play the content, without waiting for longer time, improve the usage experience of user.
It should be noted, in the present embodiment, client 130 may also pass through media content distribution system 120 to block chain link
110 application licenses of point.
Fig. 4 is the media content Licensing Methods interaction diagrams of the application 3rd embodiment, in the present embodiment, in media
Hold the license request that dissemination system directly accepts client, as shown in figure 4, the media content Licensing Methods include：
Step 401-402 is identical with the step 301-302 of embodiment two, will not be repeated here.
Step 403：Media delivery service 120 returns to client 130 and orders success response message, while returning to encryption matchmaker
Body stream, during the encrypted media streams of return can be the total medium stream or part of media stream of media content, the present embodiment
Returning part encryption stream, returning to the duration of encryption stream needs to be set according to block chain write performance, i.e., write and complete in block chain
Certain allowance is added on the basis of time, such as current block chain ablation process needs 10 minutes, and allowance is set to 5 minutes, then
The encryption stream of return 15 minutes.
It should be noted that the example above is only the special case of the application, other setting bars on the basis of this programme
Part should belong to the deformation of this programme, also in protection domain.
Step 404-4032 processing procedure is substantially identical with embodiment two, and its difference is that client application is permitted
Can when carried out by media content distribution system, applied not directly to authentication management system, will not be repeated here.
Step 433：The formal license message of generation is returned to media delivery service by entitlement management module.
Step 434：The formal license of generation is returned to client by media delivery service, and starts to push remaining encryption
Flow to client.
Main improvement in above-mentioned flow is：Duration is also carried out to the encrypted video stream returned temporarily in step 403
Constraint, step 434 just carries out the push of remaining video stream when client obtains formal license, can so prevent client
Hold after being attacked by constantly applying for that the situation that temporary license issuing realizes that complete video content is watched occurs.
The schematic block diagram for the network equipment 500 that Fig. 5 is implemented for the media content Licensing Methods of the embodiment of the present application.Equipment
500 may include multiple inbound ports 510 and/or acceptor unit (Rx) 520, for receiving data；Logic unit or processor
530, for process signal；Multiple exit ports 540 and/or transmitter unit (Tx) 550, for transmitting data to other portions
Part；And memory 560.Equipment 500 may be adapted to implement any disclosed feature as described above, method and apparatus.For example,
Equipment 500 may be adapted to implement block chain key management node, client and media content distribution system, and as described above
The Licensing Methods of media content.
Logic unit 530 (can be described as CPU (CPU)) can with inbound port 510, acceptor unit 520, go out end
Mouth 540, transmitter unit 550 and memory 560 communicate.Logic unit 530 may be embodied as one or more cpu chips, core
(for example, polycaryon processor), field programmable gate array (FPGA), application specific integrated circuit (ASIC) and/or Digital Signal Processing
Device (DSP), and/or can be an one or more ASIC part.
Memory 560 can be made up of one or more disks, tape drive, CD drive or solid-state drive；Can
For the non-volatile memories of data and as overflow data storage device；Journey is stored available for when selection performs this class method
Sequence；And the instruction and data read during being performed available for storage program.Memory 560 can be volatibility and/or non-volatile
Property and can be read-only storage (ROM), it is random access memory (RAM), TCAM (TCAM), static
Random access memory (SRAM), other suitable type of memory or its any combination.Such as：Memory 560 may include as
Entitlement management module, user management module, key management module and block chain writing module shown in Fig. 1, may be adapted to implement area
Block chain key management node.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, the composition and step of each example are generally described according to function in the above description.This
A little functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specially
Industry technical staff can realize described function to each specific application using distinct methods, but this realization is not
It is considered as exceeding scope of the present application.
It is apparent to those skilled in the art that, for convenience of description and succinctly, foregoing description is
The specific work process of system, device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
, can be with several embodiments provided herein, it should be understood that disclosed systems, devices and methods
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.In addition, shown or beg for
The coupling each other of opinion or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, device or unit
Or communication connection or electricity, mechanical or other forms are connected.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the embodiment of the present application scheme according to the actual needs
Purpose.
In addition, each functional unit in the application each embodiment can be integrated in a processing unit, can also
It is that unit is individually physically present or two or more units are integrated in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, the technical scheme of the application is substantially
The part contributed in other words to prior art, or all or part of the technical scheme can be in the form of software product
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of the application each embodiment methods described
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It is described above, the only embodiment of the application, but the protection domain of the application is not limited thereto, and it is any
Those familiar with the art can readily occur in various equivalent modifications or replace in the technical scope that the application is disclosed
Change, these modifications or substitutions should all cover within the protection domain of the application.Therefore, the protection domain of the application should be with right
It is required that protection domain be defined.
Claims (15)
1. a kind of Licensing Methods of media content, it is characterised in that including：
The media content license request that block chain node receiving end/sending end is sent, the media content license request is included in media
Hold identification information and user identity information；
The block chain node returns interim according to the media content identification information and user identity information to the transmitting terminal
License, the temporary license issuing includes decruption key and the temporary license issuing time of the media content.
2. Licensing Methods as claimed in claim 1, it is characterised in that methods described also includes：
The block chain node determines that not storing user corresponding with the media content identification information and user identity information awards
Weigh information；
The block chain node is obtained according to the media content identification information and user identity information from media content distribution system
The order record information of the media content of the user is taken, the temporary license issuing is generated according to the order record information.
3. Licensing Methods as claimed in claim 1 or 2, it is characterised in that methods described also includes：
The media content license request that the transmitting terminal is sent is received again, and the media content license request includes media content
Identification information and user identity information；
Determine to be stored with and the media content identification information and user according to the media content identification and user identity information
Authorized user message corresponding to identification information；
According to the authorized user message, formal license is generated, the formal license includes the decruption key of the media content；
Formal license is returned to the transmitting terminal.
4. the Licensing Methods as described in claim any one of 1-3, it is characterised in that also include：
The authorized user message write request that the media content distribution system is sent is received, the authorized user message is write
Into the block chain node.
5. a kind of Licensing Methods of media content, applied in client, it is characterised in that including：
Media content license request is sent to block chain node, the media content license request includes media content identification information
And user identity information；
Receive the temporary license issuing that the block chain node is returned according to the media content identification information and user identity information, institute
State decruption key and temporary Authorization time of the temporary license issuing including the media content.
6. Licensing Methods as claimed in claim 5, it is characterised in that methods described also includes：
The media content subscription request is sent to media content distribution system, the media content subscription request is comprising in media
Hold mark and user identity information；
Receive the response of media content order and encryption corresponding with the media content identification that the content delivering system is returned
Media content.
7. the Licensing Methods as described in claim 5 or 6, it is characterised in that methods described also includes：
Before the temporary Authorization time expires, media content license request is sent again to the block chain node, it is described
Media content license request includes the identification information and user identity information of the media content；
The formal license that the block chain node is returned is received, the formal license includes the decruption key of the media content.
8. the Licensing Methods as described in claim any one of 5-7, it is characterised in that the media content of the encryption is the matchmaker
The partial content held in vivo.
9. a kind of block chain node, it is characterised in that including：
Receiver, the media content license request sent for receiving end/sending end, the media content license request includes media
Content identification information and user identity information；
Transmitter, for returning to interim permitted to the transmitting terminal according to the media content identification information and user identity information
Can, the temporary license issuing includes decruption key and the temporary license issuing time of the media content.
10. block chain node as claimed in claim 9, it is characterised in that also include：
Processor, for determining that the block chain node is not stored and the media content identification information and user identity information pair
The authorized user message answered；Obtained according to the media content identification information and user identity information from media content distribution system
The order record information of the media content of the user, the temporary license issuing is generated according to the order record information.
11. the block chain node as described in claim 9 or 10, it is characterised in that the receiver is additionally operable to receive institute again
The media content license request of transmitting terminal transmission is stated, the media content license request includes media content identification information and user
Identification information；
The processor is additionally operable to determine that the block chain node is stored with and the media content identification information and user's mark
The corresponding authorized user message of information, according to the authorized user message, generates formal license, the formal license includes described
The decruption key of media content；
The transmitter is additionally operable to return to formal license to the transmitting terminal.
12. a kind of client terminal device, it is characterised in that including：
Transmitter, for sending media content license request to block chain node, the media content license request includes media
Content identification information and user identity information；
Receiver, is returned for receiving the block chain node according to the media content identification information and user identity information
Temporary license issuing, the temporary license issuing includes decruption key and the temporary Authorization time of the media content.
13. client terminal device as claimed in claim 12, it is characterised in that
The transmitter also sends the media content subscription request to media content distribution system, and the media content is ordered please
Ask comprising media content identification and user identity information；
The receiver also receive the media content that the content delivering system returns order response and with the media content mark
Know the media content of corresponding encryption.
14. the client terminal device as described in claim 12 or 13, it is characterised in that expire it in the temporary Authorization time
Before, the transmitter also sends media content license request to the block chain node, and the media content license request includes
The identification information of the media content and the identification information of the user；
The receiver also receives the formal license that the block chain node is returned, and the formal license includes the media content
Decruption key.
15. the client terminal device as described in claim any one of 12-14, it is characterised in that the encryption that the receiver is received
Media content be the media content partial content.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710194159.5A CN107018432B (en) | 2017-03-28 | 2017-03-28 | Media content licensing method and device |
| PCT/CN2018/078430 WO2018177110A1 (en) | 2017-03-28 | 2018-03-08 | Media content licensing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710194159.5A CN107018432B (en) | 2017-03-28 | 2017-03-28 | Media content licensing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107018432A true CN107018432A (en) | 2017-08-04 |
| CN107018432B CN107018432B (en) | 2020-02-14 |
Family
ID=59445908
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710194159.5A Active CN107018432B (en) | 2017-03-28 | 2017-03-28 | Media content licensing method and device |
Country Status (2)
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| CN (1) | CN107018432B (en) |
| WO (1) | WO2018177110A1 (en) |
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| CN107018432B (en) | 2020-02-14 |
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