CN115659287B - Network copyright consumption management system - Google Patents
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Abstract
The invention discloses a network copyright consumption management system, which comprises a CP or a partner module thereof, a key center module and an SP module, wherein a content encryption system is arranged in the CP or the partner module thereof; the key center module is provided with a key inquiry service, the key inquiry service is connected with a key gateway in a data way, the key inquiry service is connected with a blockchain database, the blockchain database is connected with a data inquiry service, and the data inquiry service is connected with a content consumption data service; the invention relates to the technical field of network copyright consumption management, in particular to a system and a method for managing network copyright consumption. The invention solves the problems that the prior art cannot obtain key information, can prevent consumption data from being tampered, has the defect of content consumption data information and has insufficient data credibility.
Description
Technical Field
The invention relates to the technical field of network copyright consumption management, in particular to a network copyright consumption management system.
Background
Digital content rights management (DRM, digital Rights Management) is a technology for protecting rights and controlling and managing use in the process of producing, spreading, selling and using digital content such as video and audio, electronic books and the like, and is widely applied to the field of rights protection in the audiovisual industry. The participants of the digital Content protection industry mainly include a Content Provider (CP), a Service Provider (SP), and a terminal Provider, the most common collaboration modes between them are shown in fig. 1, the CP provides digital Content to the SP, the terminal Provider provides terminals (mobile phones, televisions, set-top boxes, etc.) supporting DRM to the SP, and the SP deploys a DRM system in the video and audio Content operation system, thereby realizing security of digital Content network distribution and terminal broadcasting.
The DRM technical standard GY/T277-2019 (hereinafter referred to as GY/T277-2019) is drafted by the China broadcast video digital rights management forum (ChinaDRM), is a recommended industry standard of broadcast television in the people's republic of China, and has the characteristics of safety, openness and good interoperability. After release from GY/T277-2019, the compound has been widely concerned and applied in the broadcast television industry. Taking video live broadcast or on demand content copyright protection application as an example, the system logic structure defined by GY/T277-2019 is shown in FIG. 2.
The DRM system consists of a server and a client, wherein the server comprises four components of content encryption, key management, key gateway and content authorization, and the functions of each component are described as follows:
content encryption: a content encryption key (CEK, content Encryption Key) is obtained from key management to encrypt live or on-demand content.
Key management: generating a CEK and transmitting the CEK to a content encryption component; and after the content is successfully encrypted, the CEK is sent to the key gateway.
Key gateway: preserve the CEK and provide the CEK query service to the content authorization component.
Content authorization: and receiving a license request from the terminal, authenticating the terminal, inquiring the CEK from the key gateway, packaging the license, and replying the license of the terminal.
Content encryption and key management are collectively referred to as a content encryption system.
The key gateway plays a role of caching and transferring CEK between the content encryption system and the content authorization, and is decoupled from the content encryption system and the content authorization, so that the key gateway can be deployed and operated by a third party organization, as shown in fig. 3, the key gateway aggregates CEKs generated by deploying the content encryption system by a plurality of CPs, provides CEK inquiry service for deploying the content authorization service by a plurality of SPs, and finally realizes license issuing at the front end of the SPs. The key gateway provides CEK inquiry service for each SP uniformly, and gathers CEK inquiry requests of each digital content, so that a third party organization responsible for operating the key gateway can provide consumption data of the digital content for CPs and SPs, and the provision of the data is more neutral and reliable.
According to GY/T277-2019, the key gateway can obtain the acquisition times of the digital content CEK by the terminal, wherein the acquisition times are equivalent to the times of issuing a license to the terminal by the content, namely the times of consuming the content by a consumer; the terminal uses a unique DRM device certificate and uniquely identifies the digital Content by a CID (Content ID). Besides the above information, the key gateway cannot obtain other key information, cannot judge from which SP the CEK queries, cannot ensure that the recorded consumption data is consistent with the recorded consumption data of the SP service system, cannot prevent the consumption data from being tampered, and the like, and has the problems of content consumption data information deficiency and insufficient data credibility.
Disclosure of Invention
The invention aims to solve the problems that key information cannot be obtained, consumption data cannot be prevented from being tampered, content consumption data information is lost and data credibility is insufficient in the prior art, and provides a network copyright consumption management system.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the network copyright consumption management system comprises a CP or a partner module thereof, a key center module and an SP module, wherein a content encryption system is arranged in the CP or the partner module thereof;
the key center module is provided with a key inquiry service, the key inquiry service defines a key inquiry interface through GY/T277-2019 to be connected with a key gateway in a data way, the key inquiry service is connected with a blockchain database, the blockchain database is connected with a data inquiry service, and the data inquiry service is connected with a content consumption data service;
the SP module is provided with a key inquiry client, the key inquiry client is connected with a content authorization service through GY/T277-2019 definition key inquiry interface data, the content authorization data is connected with a terminal, the terminal is connected with a transaction management service, and the transaction management service is connected with the key inquiry client data;
the key gateway is connected with the content encryption system data;
the key query service is in data connection with a key query client through a key query interface defined herein.
Preferably, the key inquiry client provides a key inquiry forwarding function for the content authorization service, receives a key inquiry request of the content authorization service conforming to GY/T277-2019, acquires a transaction unique identifier generated by consumer consumption of digital content from transaction management, encapsulates the key inquiry request, and sends the key inquiry request to a key inquiry service of a key center; after receiving the response of the key inquiry service reply of the key center, processing the response, forwarding the key inquiry response conforming to GY/T277-2019 to the content authorization service, and performing bidirectional authentication by the key inquiry service and the key inquiry client: the key inquiry client signs the key inquiry request, and the key inquiry service authenticates the signature; the key query service signs the key query response, and the key query client authenticates the signature, confirming that the response is from a legitimate key query service.
Preferably, the key inquiry service provides a key inquiry service for the key inquiry client, receives a key inquiry request of the key inquiry client, and transmits the key inquiry request conforming to GY/T277-2019 to a key gateway for processing; after receiving the key inquiry response of the key gateway conforming to GY/T277-2019, the key inquiry service encapsulates the key inquiry response and sends the key inquiry response to the key inquiry client; the service stores the consumption data in a blockchain database; the service stores the successful key inquiry request and response message data each time, and the key inquiry service and the key inquiry client execute bidirectional authentication: the key inquiry service authenticates the key inquiry request signature, confirms that the request comes from a legal key inquiry client, and transmits the key inquiry request conforming to GY/T277-2019 to a key gateway for processing after authentication is passed; the key inquiry service encapsulates the key inquiry response and signs the key inquiry response, and the key inquiry client authenticates the response signature to confirm that the response is from a legal key inquiry service.
Preferably, the blockchain database stores consumption data by using the blockchain database, and each consumption data is stored on the blockchain so as to effectively prevent tampering.
Preferably, the data query service is based on a blockchain database, provides a data query service for content consumption data service, and provides a data query service for a CP or a partner module and an SP module thereof.
Preferably, the data query service includes querying consumption data of a specified time range and a specified SP identifier; inquiring the consumption data of the appointed time range, the appointed SP identification and the appointed service identification; inquiring the consumption data of the appointed time range and the appointed content ID; and inquiring the consumption data of the specified time, the specified SP identifier, the specified service identifier and the specified content ID.
Preferably, the content consumption data service provides statistical information of content consumption data to the CP or its partner module and SP module, respectively.
Preferably, the content consumption data service provides the consumption data analysis of the content consumption data for the specified content within the specified time range for the CP or the partner module thereof, wherein the analysis comprises week/month/year consumption frequency statistics and consumption terminal distribution statistics.
Preferably, the content consumption data service provides the SP module with analysis of content consumption data for consumption data within a specified time range, including statistics of week/month/year consumption times.
Compared with the prior art, the invention has the beneficial effects that: 1. the invention has rich content consumption data information, and the key inquiry interface expands the GY/T277-2019 interface to solve the problem of insufficient content consumption information.
2. The content consumption data is credible, and the key inquiry service uses the trust management mechanism to issue the certificate, so that trust can be established between the key center and the SP module; the SP module signs the key inquiry request, so that the authenticity of the content consumption data is guaranteed; content consumption data is stored in a block chain, so that the data can be effectively prevented from being tampered; the unique identification number of the content consumption data is associated with the unique identification of the transaction generated by the SP module service system when the consumer consumes the content, and the unique identification number can be traced back to the SP module service system for data verification when necessary.
3. The invention has little change to the DRM system deployed by the CP or the partner module and the SP module thereof; the SP module only needs to add a deployment key to query the client, and the service only contains two interfaces.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of a typical collaboration among participants in the digital content industry;
FIG. 2 is a schematic diagram of the logical structure of the GY/T277-2019 defined DRM system;
FIG. 3 is a schematic diagram of an application scenario in which a third party authority deploys and operates a key gateway;
fig. 4 is a schematic diagram of a network rights consumption management system.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to fig. 1 to 4. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The invention provides a technical scheme that: the network copyright consumption management system comprises a CP or a partner module thereof, a key center module and an SP module, wherein a content encryption system is arranged in the CP or the partner module thereof;
the key center module is provided with a key inquiry service, the key inquiry service defines a key inquiry interface through GY/T277-2019 to be connected with a key gateway in a data way, the key inquiry service is connected with a blockchain database, the blockchain database is connected with a data inquiry service, and the data inquiry service is connected with a content consumption data service;
the SP module is provided with a key inquiry client, the key inquiry client is connected with a content authorization service through GY/T277-2019 definition key inquiry interface data, the content authorization data is connected with a terminal, the terminal is connected with a transaction management service, and the transaction management service is connected with the key inquiry client data;
the key gateway is connected with the content encryption system data;
the key query service is in data connection with a key query client through a key query interface defined herein.
The key inquiry client provides a key inquiry forwarding function for the content authorization service, receives a key inquiry request of the content authorization service conforming to GY/T277-2019, acquires a transaction unique identifier generated by consumer consumption of digital content from transaction management, encapsulates the key inquiry request and sends the key inquiry request to a key inquiry service of a key center; after receiving the response of the key inquiry service reply of the key center, processing the response, forwarding the key inquiry response conforming to GY/T277-2019 to the content authorization service, and performing bidirectional authentication by the key inquiry service and the key inquiry client: the key inquiry client signs the key inquiry request, and the key inquiry service authenticates the signature; the key query service signs the key query response, and the key query client authenticates the signature, confirming that the response is from a legitimate key query service.
The key inquiry service provides key inquiry service for the key inquiry client, receives the key inquiry request of the key inquiry client and transmits the key inquiry request conforming to GY/T277-2019 to the key gateway for processing; after receiving the key inquiry response of the key gateway conforming to GY/T277-2019, the key inquiry service encapsulates the key inquiry response and sends the key inquiry response to the key inquiry client; the service stores the consumption data in a blockchain database; the service stores the successful key inquiry request and response message data each time, and the key inquiry service and the key inquiry client execute bidirectional authentication: the key inquiry service authenticates the key inquiry request signature, confirms that the request comes from a legal key inquiry client, and transmits the key inquiry request conforming to GY/T277-2019 to a key gateway for processing after authentication is passed; the key inquiry service encapsulates the key inquiry response and signs the key inquiry response, and the key inquiry client authenticates the response signature to confirm that the response is from a legal key inquiry service.
The blockchain database stores consumption data by using the blockchain database, and each consumption data is stored on the blockchain so as to effectively prevent tampering.
The data query service is based on a block chain database, provides data query service for content consumption data service, and provides data query service for the CP or a partner module and the SP module thereof.
The data query service comprises the steps of querying consumption data of a designated time range and a designated SP identifier; inquiring the consumption data of the appointed time range, the appointed SP identification and the appointed service identification; inquiring the consumption data of the appointed time range and the appointed content ID; and inquiring the consumption data of the specified time, the specified SP identifier, the specified service identifier and the specified content ID.
The content consumption data service provides statistical information of content consumption data for the CP or the partner module and the SP module thereof respectively.
The content consumption data service provides consumption data analysis of content consumption data for specified content within a specified time range for a CP or a partner module thereof, wherein the analysis comprises week/month/year consumption frequency statistics and consumption terminal distribution statistics.
The content consumption data service provides the SP module with content consumption data for consumption data analysis within a specified time range, including week/month/year consumption count.
The description of the key query interface between the key query service and the key query client is as follows:
1. certificates issued by a trust authority are used. The key inquiry service deployed by the third party organization and the key inquiry client deployed by the SP deploy the service end and the client certificate issued by the trust management organization respectively, the key inquiry service authenticates the request signature, and the key inquiry client authenticates the response signature.
2. The interface request and response includes the following information:
the request is encapsulated by the key inquiry client and sent to the key inquiry service, and the key inquiry service comprises the following information: 1) Requesting a unique identifier; 2) Request time; 3) SP identification; 4) A service identifier; 5) Other information; 6) GY/T277-2019 Key query request; 7) A certificate chain; 8) And (5) signing.
Wherein, the request unique identifier: obtaining from the SP transaction management service the same as or uniquely associated with a transaction unique identifier generated when the consumer consumes the content;
request time: the time at which the current request occurred;
SP identification: uniformly distributed by industry for distinguishing SP;
service identification: for distinguishing unused traffic within the SP;
other information: consumption information other than the foregoing information;
GY/T277-2019 key query request: a key query request encapsulated by the authorization service in GY/T277-2019;
certificate chain: the key queries the client certificate chain;
signature: the signature computed on the previous data is queried using the key to the client private key.
The response is encapsulated by the key query service and sent to the key query client, including the following information: 1) Responding to the unique identification; 2) Response time; 3) SP identification; 4) A service identifier; 5) Other information; 6) GY/T277-2019 Key lookup response; 7) A certificate chain; 8) And (5) signing.
Wherein, in response to the unique identification: maintaining the same value as the request unique identifier;
response time: the time at which the current response occurs;
SP identification: uniformly distributing by industry, and distinguishing SP by users;
service identification: for distinguishing unused traffic within the SP;
other information: information other than the foregoing information;
GY/T277-2019 key challenge response: a key inquiry response encapsulated by the key gateway according to GY/T277-2019;
certificate chain: key inquiry service certificate chain;
signature: a signature computed on the previous data using a key querying service private key;
after each time the key inquiry service finishes the key inquiry processing, a piece of content consumption data is generated and stored in the blockchain database. The consumption data includes the following information:
requesting a unique identifier;
request time;
response time;
SP identification;
a service identifier;
content ID obtained from GY/T277-2019 key inquiry request;
the DRM device certificate identification, namely the sequence number of the DRM device certificate carried by the GY/T277-2019 key inquiry request;
other information, in addition to the information described above;
hash values for all previous data.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. The network copyright consumption management system comprises a CP or a partner module thereof, a key center module and an SP module, and is characterized in that: the CP or the partner module is provided with a content encryption system;
the key center module is provided with a key inquiry service, the key inquiry service defines a key inquiry interface through GY/T277-2019 to be connected with a key gateway in a data way, the key inquiry service is connected with a blockchain database, the blockchain database is connected with a data inquiry service, and the data inquiry service is connected with a content consumption data service;
the SP module is provided with a key inquiry client, the key inquiry client defines key inquiry interface data through GY/T277-2019 to be connected with content authorization service, the content authorization data is connected with a terminal, the terminal is connected with transaction management service, and the transaction management service is connected with the key inquiry client data;
the key gateway is connected with the content encryption system data;
the key inquiry service is in data connection with a key inquiry client through a key inquiry interface defined in the text;
the key inquiry client provides a key inquiry forwarding function for the content authorization service, receives a key inquiry request of the content authorization service conforming to GY/T277-2019, acquires a transaction unique identifier generated by consumer consumption of digital content from transaction management, encapsulates the key inquiry request and sends the key inquiry request to a key inquiry service of a key center; after receiving the response of the key inquiry service reply of the key center, processing the response, forwarding the key inquiry response conforming to GY/T277-2019 to the content authorization service, and performing bidirectional authentication by the key inquiry service and the key inquiry client: the key inquiry client signs the key inquiry request, and the key inquiry service authenticates the signature; the key inquiry service signs the key inquiry response, the key inquiry client identifies the signature, and the response is confirmed to come from legal key inquiry service;
the key inquiry service provides key inquiry service for the key inquiry client, receives the key inquiry request of the key inquiry client and transmits the key inquiry request conforming to GY/T277-2019 to the key gateway for processing; after receiving the key inquiry response of the key gateway conforming to GY/T277-2019, the key inquiry service encapsulates the key inquiry response and sends the key inquiry response to the key inquiry client; the service stores the consumption data in a blockchain database; the service stores the successful key inquiry request and response message data each time, and the key inquiry service and the key inquiry client execute bidirectional authentication: the key inquiry service authenticates the key inquiry request signature, confirms that the request comes from a legal key inquiry client, and transmits the key inquiry request conforming to GY/T277-2019 to a key gateway for processing after authentication is passed; the key inquiry service encapsulates the key inquiry response and signs the key inquiry response, and the key inquiry client authenticates the response signature to confirm that the response is from a legal key inquiry service.
2. The network rights consumption management system of claim 1, wherein: the blockchain database stores consumption data by using the blockchain database, and each consumption data is stored on the blockchain so as to effectively prevent tampering.
3. The network rights consumption management system of claim 1, wherein: the data query service is based on a block chain database, provides data query service for content consumption data service, and provides data query service for the CP or a partner module and the SP module thereof.
4. A network rights consumption management system according to claim 3, characterized in that: the data query service comprises the steps of querying consumption data of a designated time range and a designated SP identifier; inquiring the consumption data of the appointed time range, the appointed SP identification and the appointed service identification; inquiring the consumption data of the appointed time range and the appointed content ID; and inquiring the consumption data of the specified time, the specified SP identifier, the specified service identifier and the specified content ID.
5. The network rights consumption management system of claim 1, wherein: the content consumption data service provides statistical information of content consumption data for the CP or the partner module and the SP module thereof respectively.
6. The network rights consumption management system of claim 5, wherein: the content consumption data service provides consumption data analysis of content consumption data for specified content within a specified time range for a CP or a partner module thereof, wherein the analysis comprises week/month/year consumption frequency statistics and consumption terminal distribution statistics.
7. The network rights consumption management system of claim 5, wherein: the content consumption data service provides the SP module with content consumption data for consumption data analysis within a specified time range, including week/month/year consumption count.
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