CN109460636B - Digital copyright management method and system and reverse proxy device - Google Patents
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- 238000000605 extraction Methods 0.000 claims description 12
- 238000001360 collision-induced dissociation Methods 0.000 claims description 3
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- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
Abstract
The invention relates to a digital copyright management method and a system and a reverse proxy device, wherein the digital copyright management method comprises the following steps: s1, receiving first request information for obtaining the content license of the media file, and obtaining the first CID of the media file and the second CID of the media file from the media distribution system; s2, generating second request information according to the first request information, the first CID and the second CID; s3, sending the second request message to a reverse proxy device, and extracting the first CID, the second CID and the first request message by the reverse proxy device to generate a third request message; and S4, sending the third request message to the DRM server through the reverse proxy device, and acquiring the content license of the media file to perform corresponding operation on the media file. The invention can realize the connection between the DRM server and the media distribution system quickly and simply.
Description
Technical Field
The present invention relates to the field of digital rights management technology, and more particularly, to a digital rights management method and system and a reverse proxy apparatus.
Background
Under the trend of the internet in China, the traditional media unidirectional broadcast programs are increasingly tiny, and the network television used as a substitute is capable of quickly eating the original wired client market due to the massive programs, the random play and the strong interactivity, and the future is bright. Drm (digital Rights management), i.e. digital Rights management, is growing in age for better protection of the content provider and the maximum benefit of the content operator. DRM refers to some technology used by publishers to control usage rights of protected objects, which primarily protects digitized content (e.g., software, music, movies, primarily video applications herein), handles usage restrictions for some instance of a digitized product. DRM technically prevents illegal copying of digital media or makes copying somewhat difficult, and the end user must be authorized to use the digital media. The method aims to protect the copyright of the digital media, give greater confidence to content merchants, give the consumers more opportunity to contact more high-quality entertainment content in time, meet the requirements of the consumers and promote the formation of a healthy video ecological environment.
In the DRM system, the DRM server and the media distribution system generally provide corresponding services from different companies or organizations due to different attention angles to the media content, which causes different companies to define the media content using different numbers CID when operating the same media content. In the actual deployment process of the media server, when the two cooperate, one party must deploy a media CID conversion system, and find a CID meeting the specification definition of the party in a query mode before the CID can be used. Involving cooperation of the two parties, many times a ripping phenomenon may occur. Moreover, the conversion system generally wastes a certain amount of time, which affects the user's look and feel.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a digital rights management method and system and a reverse proxy apparatus, aiming at some technical defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a digital copyright management method is constructed, and the method comprises the following steps:
s1, receiving first request information for obtaining the content license of the media file, and obtaining the first CID of the media file and the second CID of the media file from the media distribution system;
s2, generating second request information according to the first request information, the first CID and the second CID;
s3, sending the second request message to a reverse proxy device, and extracting the first CID, the second CID and the first request message by the reverse proxy device to generate a third request message;
s4, sending the third request message to the DRM server through the reverse proxy apparatus, and obtaining the content license of the media file to perform a corresponding operation on the media file.
Preferably, in the step S1, the obtaining the first CID of the media file and the second CID of the media file includes:
and acquiring a media information file of the media file from the media distribution system, acquiring the first CID from the media information file, and acquiring the second CID from a special header box of a protection system of the media distribution system.
Preferably, in the step S2, the generating second request information according to the first request information, the first CID and the second CID; the method comprises the following steps: performing secondary encapsulation on the first request information, the first CID and the second CID to generate the second request information.
Preferably, in the step S3: the second request message is sent to a reverse proxy device, and the first CID, the second CID and the first request message are extracted by the reverse proxy device to generate a third request message; the method comprises the following steps:
s31, sending the second request message to the reverse proxy device;
s32, extracting the first CID from the reverse proxy device and obtaining the use right R of the media file through the media distribution system;
s33, extracting, by the reverse-proxy device, the second CID and the first request information;
s34, generating, by the reverse-proxy device, the third request information according to the second CID, the first request information, and the usage right R.
Preferably, in the step S34, the generating the third request information according to the second CID, the first request information and the usage right R includes:
packaging the second CID, the first request information and the usage right R to generate the third request information.
Preferably, in the step S4, the performing the corresponding operation on the media file includes:
analyzing the content license, and acquiring the use right R corresponding to the media file to control or limit the use of the media file; and/or
And analyzing the content license, and acquiring a decryption secret key K corresponding to the media file to decrypt and play the media file.
The present invention also constructs a reverse proxy apparatus including:
a receiving unit, configured to receive second request information sent by the terminal, where the second request information includes first request information for acquiring a content license of the media file, a first CID of the media file, and a second CID of the media file;
an extracting unit, configured to extract the first CID, the second CID, and the first request information from the second request information, and generate third request information;
a transmitting unit for transmitting the third request information to the DRM server;
the receiving unit is further used for receiving the content license of the media file sent by the DRM server;
the sending unit is further configured to send the content license to the terminal.
Preferably, the extraction unit comprises a first extraction unit and a second extraction unit;
the first extraction unit is used for extracting the first CID and obtaining the use right R of the media file through a media distribution system;
the second extracting unit is configured to extract the second CID and the first request information, and generate the third request information according to the second CID, the first request information, and the usage right R.
The invention also constructs a digital copyright management system, which comprises a terminal, a DRM server, a media distribution system and a reverse proxy device arranged between the terminal and the DRM server;
the terminal is used for receiving first request information for acquiring a content license of a media file, acquiring a first CID of the media file and a second CID of the media file from the media distribution system, generating second request information according to the first request information, the first CID and the second CID, and sending the second request information to the reverse proxy device;
the reverse proxy device is configured to receive the second request message, extract the first CID, the second CID, and the first request message from the second request message, generate a third request message, and send the third request message to the DRM server;
the DRM server is configured to receive the third request message, and send a content license of the media file to the reverse proxy apparatus;
the reverse proxy device is also used for sending the content license of the media file to the terminal;
and the media distribution system is used for sending the media file to the terminal according to the content license of the media file so that the terminal can conveniently perform corresponding operation on the media file.
Preferably, the reverse-proxy apparatus extracts the first CID, the second CID, and the first request information from the second request information, and generates third request information, including:
the reverse proxy device extracts the first CID and acquires the use right R of the media file through the media distribution system; extracting the second CID and the first request information, and generating the third request information according to the second CID, the first request information and the usage right R.
The digital copyright management method, the digital copyright management system and the reverse proxy device have the following beneficial effects: the method and the system realize the butt joint of the DRM server and the media distribution system quickly and simply.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a flowchart of a digital rights management method according to an embodiment of the present invention;
FIG. 2 is a logical block diagram of a first embodiment of a reverse proxy apparatus of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the digital rights management system of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of the digital rights management method of the present invention, the method includes the following steps:
s1, receiving first request information for obtaining the content license of the media file, and obtaining the first CID of the media file and the second CID of the media file from the media distribution system; specifically, a user selects a media file to be played through a terminal operation, and requests the media distribution system to operate the media file by clicking the media file to select the media file, that is, requests to acquire the Content LICENSE of the media file, where the operation may include using or playing, it can be understood that, in the process of selecting the played file, the terminal receives a request message that is a first request message that is the Content LICENSE of the media file, where the first request message is defined as an original LICENSE application message DRM _ orignallicense request, and when the terminal receives the first request message DRM _ orignallicense request that is the request message that is played, the terminal obtains a first CID and a second CID corresponding to the media file from the media distribution system, where the CIDs are Content IDs, and may correspondingly identify the media file through the CIDs.
S2, generating second request information according to the first request information, the first CID and the second CID; specifically, after acquiring first request information DRM _ alignnallicencerequest, first CID and second CID corresponding to a media file, the terminal generates corresponding second request information according to the acquired information. The second request message is defined herein as DA _ PackedLicenseRequest.
S3, sending the second request message to a reverse proxy device, and extracting the first CID, the second CID and the first request message by the reverse proxy device to generate a third request message; specifically, the terminal sends the second request information DA _ packedlicinserequest to a reverse proxy device, and after receiving the second request information DA _ packedlicinserequest, the reverse proxy device extracts the first CID, the second CID, and the first request information DRM _ alignnallicense request from the second request information DA _ packedlicinserequest, and regenerates the third request information according to the first CID, the second CID, and the first request information DRM _ alignnallicense request. The third request message is defined herein as DP _ license request.
And S4, sending the third request message to the DRM server through the reverse proxy device, and acquiring the content license of the media file to perform corresponding operation on the media file. Specifically, the reverse proxy device sends the third request information to the DRM server, and it can be understood that, here, the third request information DP _ LICENSE request is a LICENSE message request format defined by the DRM server, the reverse proxy device requests the DRM server for a content LICENSE liense corresponding to the media file through the third request information DP _ LICENSE request, after receiving the content LICENSE liense sent by the DRM server, the reverse proxy device forwards the content LICENSE liense to the terminal, the terminal parses the content LICENSE liense, acquires various licensed contents corresponding to the media file included in the liense, and implements corresponding operations on the media file according to the licensed contents.
Further, in step S1, acquiring the first CID of the media file and the second CID of the media file includes: and acquiring a media information file of the media file from the media distribution system, acquiring a first CID from the media information file, and acquiring a second CID from a special header box of a protection system of the media distribution system. Specifically, in step S1, after the media file is selected to send the play request information, that is, after the terminal obtains the first request information DRM _ alignnainserequest corresponding to the media file, the media information file of the media file is obtained from the media distribution system, and then the first CID is obtained from the media information file, where the first CID is specifically understood as the content ID of the media file defined by the media distribution system, that is, CID _ STREAMING. The terminal also obtains a second CID of the media file from a protection system-specific header box, i.e., PSSH box, of the media distribution system, where the second CID may be a content ID of the media file defined by the DRM server, i.e., CID _ DRM.
Further, in step S2, second request information is generated according to the first request information, the first CID, and the second CID; the method comprises the following steps: the first request information, the first CID and the second CID are secondarily encapsulated to generate second request information. Specifically, in step S2, when the terminal obtains the content license of the media file according to the obtained request of the user, for example, when playing or using the first request information DRM _ orignallicense request of the media file, the terminal encapsulates and packages the obtained first CID, i.e., CID _ STREAMING and the obtained second CID, i.e., CID _ DRM, with the first request information DRM _ orignallicense request for a second time, and generates the second request information DA _ packedlicenlicense request, where the encapsulated second request information DA _ packedlicenlicense request may include the following format.
Of course, the above-mentioned example of the second request information DA _ PackedLicenseRequest generated for packaging is only one, and different designs may be performed here according to specific needs.
Further, in step S3: sending the second request message to a reverse proxy device, and extracting the first CID, the second CID and the first request message through the reverse proxy device to generate a third request message; the method comprises the following steps: s31, sending the second request information to the reverse proxy device; s32, extracting the first CID through the reverse proxy device and obtaining the use right R of the media file through the media distribution system; s33, extracting the second CID and the first request information by the reverse proxy device; and S34, generating third request information according to the second CID, the first request information and the use right R through the reverse proxy device. Specifically, in step S3, the detailed steps of the reverse proxy apparatus generating the third request message DP _ license request may be as follows: the reverse proxy device extracts the first CID (CID _ STREAMING) from the received second request information DA _ PackedLicenseRequest, and requests the use right R corresponding to the media file from the media distribution system by taking the CID _ STREAMING as an index. After obtaining the usage right R of the media file, continuously extracting the second CID, namely CID _ DRM, and the first request information DRM _ alignmenterequest from the second request information DA _ packedlicforcerequest, and generating a third request message DP _ LICENSE request according to the usage right R, the second CID, namely CID _ DRM, and the first request information DRM _ alignmentforcerequest, and transmitting the third request message DP _ LICENSE request to the DRM server, where the third request message DP _ LICENSE request satisfies a LICENSE message request format defined by the DRM server, and requests a content LICENSE corresponding to the media file.
Further, in step S34, generating the third request information according to the second CID, the first request information, and the usage right R includes: the second CID, the first request information, and the usage right R are packaged to generate third request information. Specifically, after acquiring the usage right R of the media file, the proxy service device packetizes the second CID, the first request information DRM _ orignallicense request, and the usage right R in a packetization manner, thereby acquiring the third request message DP _ license request that satisfies the license message request format defined by the DRM server.
Further, in step S4, the corresponding operation is performed on the media file, which in some embodiments includes: analyzing the content license and acquiring the use right R corresponding to the media file to control or limit the use of the media file; in other embodiments, the method comprises: and analyzing the content license, and acquiring a decryption key K corresponding to the media file to decrypt and play the media file. Specifically, after acquiring a content LICENSE LICENSE corresponding to a media file, the terminal analyzes the content LICENSE LICENSE, then requests the media file from the media distribution system, acquires a use right R corresponding to the media file in the content LICENSE LICENSE, controls and limits the use of the media file by using the use right R, and can also acquire a decryption key K corresponding to the media file from the content LICENSE LICENSE, request the media file from the media distribution system by using the decryption key K, and decrypt and play the media file.
As shown in fig. 2, a reverse proxy apparatus according to the present invention includes: a receiving unit 210, configured to receive second request information sent by the terminal and including first request information for acquiring a content license of the media file, a first CID of the media file, and a second CID of the media file; an extracting unit 220, configured to extract the first CID, the second CID, and the first request information from the second request information, and generate third request information; a transmitting unit 230 for transmitting the third request information to the DRM server; the receiving unit 210 is further configured to receive a content license of the media file sent by the DRM server; the transmitting unit 230 is also used to transmit a content license to the terminal. Specifically, in the reverse proxy apparatus of the present invention, the receiving unit 210 receives second request information DA _ PackedLicenseRequest sent by the terminal, where the second request information DA _ PackedLicenseRequest includes first request information DRM _ alignnlicerequest for obtaining a content LICENSE of a media file, which is received by the terminal, a first CID of the media file, namely CID _ pending, and a second CID of the media file, namely CID _ DRM, extracts the first CID, the second CID, and the first request information DRM _ alignnalforcerequest from the second request information DA _ PackedLicenseRequest through the extracting unit 220, and regenerates a third request message DP _ forcerequest according to the first CID, the second CID, and the first request information DRM _ alignnalforcerequest. The transmitting unit 230 transmits a third request message DP _ license request to the DRM server; the receiving unit 210 receives a content LICENSE of the media file sent by the DRM server; the transmitting unit 230 transmits the content LICENSE to the terminal.
Further, the extraction unit 220 includes a first extraction unit and a second extraction unit; the first extraction unit is used for extracting the first CID and obtaining the use right R of the media file through the media distribution system; the second extracting unit 220 is configured to extract the second CID and the first request information, and generate third request information according to the second CID, the first request information, and the usage right R. Specifically, the first extracting unit extracts a first CID, i.e., CID _ STREAMING, from the received second request information DA _ PackedLicenseRequest, and requests the media distribution system for the usage right R corresponding to the media file using CID _ STREAMING as an index. After obtaining the usage right R of the media file, the second extracting unit extracts the second CID, CID _ DRM, and the first request information DRM _ alignnallicense request from the second request information DA _ PackedLicenseRequest, and generates a third request message DP _ LICENSE request according to the usage right R, the second CID, CID _ DRM, and the first request information DRM _ alignnallicense request, and transmits the third request message DP _ LICENSE request to the DRM server, where the third request message DP _ LICENSE request satisfies a LICENSE message request format defined by the DRM server, requesting a content LICENSE corresponding to the media file.
In addition, as shown in fig. 3, a digital rights management system of the present invention includes a terminal 10, a DRM server 30, a media distribution system 40, and a reverse proxy apparatus 20 disposed between the terminal 10 and the DRM server 30; the terminal 10 is configured to receive first request information for acquiring a content license of the media file, acquire a first CID of the media file and a second CID of the media file from the media distribution system 40, generate second request information according to the first request information, the first CID, and the second CID, and send the second request information to the reverse proxy apparatus 20; a reverse proxy apparatus 20 for receiving the second request information, extracting the first CID, the second CID, and the first request information from the second request information, generating third request information, and transmitting the third request information to the DRM server 30; a DRM server 30 for receiving the third request information, and transmitting a content license of the media file to the reverse proxy apparatus 20; the reverse proxy apparatus 20 is also used to send a content license for the media file to the terminal 10; and the media distribution system 40 is used for sending the media file to the terminal 10 according to the content license of the media file so that the terminal 10 can perform corresponding operation on the media file. Specifically, the user selects a media file to be played through the operation of the terminal 10, and requests the media distribution system 40 to operate the media file by clicking the media file to select, where the operation may include using or playing, that is, requesting to acquire the content LICENSE of the media file, where it can be understood that, in the process of selecting the played file, the terminal 10 receives the first request information DRM _ orignallicense request, which is the request information for acquiring the content LICENSE of the media file, and when the terminal 10 receives the first request information DRM _ orignallicense request, which requests to play the media file, the terminal may acquire the first CID and the second CID corresponding to the media file from the media distribution system 40. After acquiring the first request information DRM _ alignlicense request, the first CID, and the second CID corresponding to the media file, the terminal 10 generates the corresponding second request information DA _ packedliclicense request according to the acquired information. The terminal 10 transmits the second request information DA _ PackedLicenseRequest to the reverse-proxy device 20, and the reverse-proxy device 20 extracts the first CID, the second CID, and the first request information DRM _ alignnallicencerequest from the second request information DA _ PackedLicenseRequest after receiving the second request information DA _ PackedLicenseRequest, and regenerates the third request message DP _ licencerequest according to the first CID, the second CID, and the first request information DRM _ alignnallicencerequest. The reverse proxy device 20 sends a third request message DP _ LICENSE request to the DRM server 30, where it is understood that the third request message DP _ LICENSE request is in a LICENSE message request format defined by the DRM server 30, the reverse proxy device 20 requests a content LICENSE liense corresponding to the media file through the third request message DP _ LICENSE request, after receiving the content LICENSE liense sent by the DRM server 30, the reverse proxy device 20 forwards the content LICENSE liense to the terminal 10, the terminal 10 parses the content LICENSE liense to obtain various licensed contents corresponding to the media file included in the liense, so as to implement corresponding operations on the media file. In addition, the terminal 10 may obtain the media information file of the media file from the media distribution system 40, and then obtain the first CID from the media information file, where the first CID is specifically understood as the content ID of the media file defined by the media distribution system 40, i.e. CID _ STREAMING. The terminal 10 also obtains a second CID of the media file, which may be a content ID of the media file defined by the DRM server 30, i.e., CID _ DRM, from a PSSH box, which is a protection system-specific header box of the media distribution system 40.
Further, the reverse proxy apparatus 20 extracts the first CID, the second CID, and the first request information from the second request information, and generates third request information, including: the reverse proxy apparatus 20 extracts the first CID and acquires the usage right R of the media file through the media distribution system 40; the second CID and the first request information are extracted, and third request information is generated according to the second CID, the first request information and the usage right R. Specifically, the reverse proxy device 20 extracts the first CID, i.e., CID _ STREAMING, from the received second request information DA _ PackedLicenseRequest, and requests the media distribution system 40 for the usage right R corresponding to the media file using CID _ STREAMING as an index. After obtaining the usage right R of the media file, the second CID, CID _ DRM, and the first request information DRM _ alignmenterequest are continuously extracted from the second request information DA _ packedlicforcerequest, and a third request message DP _ LICENSE request is generated based on the usage right R, the second CID, CID _ DRM, and the first request information DRM _ alignmentforcerequest, and sent to the DRM server 30, where the third request message DP _ LICENSE request satisfies a LICENSE message request format defined by the DRM server 30, requesting a content LICENSE corresponding to the media file.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (7)
1. A digital rights management method, comprising the steps of:
s1, receiving first request information for obtaining a content license of a media file, and obtaining a first CID of the media file and a second CID of the media file from a media distribution system, where the CIDs are content IDs for identifying the media file, the first CID is the content ID of the media file defined by the media distribution system, and the second CID is the content ID of the media file defined by a DRM server;
s2, generating second request information according to the first request information, the first CID and the second CID;
s3, sending the second request message to a reverse proxy device, and extracting the first CID, the second CID and the first request message by the reverse proxy device to generate a third request message;
s4, sending the third request information to a DRM server through the reverse proxy device, and acquiring the content license of the media file to perform corresponding operation on the media file;
wherein, in the step S3: the second request message is sent to a reverse proxy device, and the first CID, the second CID and the first request message are extracted by the reverse proxy device to generate a third request message; the method comprises the following steps:
s31, sending the second request message to the reverse proxy device;
s32, extracting the first CID from the reverse proxy device and obtaining the use right R of the media file through the media distribution system;
s33, extracting, by the reverse-proxy device, the second CID and the first request information;
s34, generating, by the reverse-proxy device, the third request information according to the second CID, the first request information, and the usage right R.
2. The method for managing digital rights according to claim 1, wherein in the step S1, the obtaining the first CID of the media file and the second CID of the media file includes:
and acquiring a media information file of the media file from the media distribution system, acquiring the first CID from the media information file, and acquiring the second CID from a special header box of a protection system of the media distribution system.
3. The digital rights management method according to claim 1, wherein in said step S2, said generating second request information based on said first request information, said first CID, and said second CID; the method comprises the following steps: performing secondary encapsulation on the first request information, the first CID and the second CID to generate the second request information.
4. The digital rights management method according to claim 1, wherein in the step S34, the generating the third request information according to the second CID, the first request information, and the usage right R includes:
packaging the second CID, the first request information and the usage right R to generate the third request information.
5. The method for managing digital rights according to claim 1, wherein in the step S4, the performing corresponding operations on the media file includes:
analyzing the content license, and acquiring the use right R corresponding to the media file to control or limit the use of the media file; and/or
And analyzing the content license, and acquiring a decryption secret key K corresponding to the media file to decrypt and play the media file.
6. A reverse proxy apparatus, comprising:
a receiving unit, configured to receive second request information sent by a terminal and including a first request information for acquiring a content license of a media file, a first CID of the media file, and a second CID of the media file, where the CID is a content ID for identifying the media file, the first CID is the content ID of the media file defined by a media distribution system, and the second CID is the content ID of the media file defined by a DRM server;
an extracting unit, configured to extract the first CID, the second CID, and the first request information from the second request information, and generate third request information;
a transmitting unit for transmitting the third request information to the DRM server;
the receiving unit is further used for receiving the content license of the media file sent by the DRM server;
the sending unit is also used for sending the content license to the terminal;
the extraction unit comprises a first extraction unit and a second extraction unit;
the first extraction unit is used for extracting the first CID and obtaining the use right R of the media file through a media distribution system;
the second extracting unit is configured to extract the second CID and the first request information, and generate the third request information according to the second CID, the first request information, and the usage right R.
7. A digital rights management system comprising a terminal, a DRM server, a media distribution system, and a reverse proxy device disposed between said terminal and said DRM server;
the terminal is used for receiving first request information for acquiring a content license of a media file, acquiring a first CID of the media file and a second CID of the media file from the media distribution system, generating second request information according to the first request information, the first CID and the second CID, and sending the second request information to the reverse proxy device; the CID is a content ID used for identifying a media file, the first CID is a content ID of the media file defined by a media distribution system, and the second CID is a content ID of the media file defined by a DRM server;
the reverse proxy device is configured to receive the second request message, extract the first CID, the second CID, and the first request message from the second request message, generate a third request message, and send the third request message to the DRM server;
the DRM server is configured to receive the third request message, and send a content license of the media file to the reverse proxy apparatus;
the reverse proxy device is also used for sending the content license of the media file to the terminal;
the media distribution system is used for sending the media file to the terminal according to the content license of the media file so that the terminal can conveniently perform corresponding operation on the media file;
the reverse proxy apparatus extracts the first CID, the second CID, and the first request information from the second request information, and generates third request information, including:
the reverse proxy device extracts the first CID and acquires the use right R of the media file through the media distribution system; extracting the second CID and the first request information, and generating the third request information according to the second CID, the first request information and the usage right R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230746.6A CN109460636B (en) | 2018-10-22 | 2018-10-22 | Digital copyright management method and system and reverse proxy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230746.6A CN109460636B (en) | 2018-10-22 | 2018-10-22 | Digital copyright management method and system and reverse proxy device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109460636A CN109460636A (en) | 2019-03-12 |
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