WO2012174787A1

WO2012174787A1 - Data forward protection method and device

Info

Publication number: WO2012174787A1
Application number: PCT/CN2011/078580
Authority: WO
Inventors: 樊霞
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-23
Filing date: 2011-08-18
Publication date: 2012-12-27
Also published as: CN102843283A

Abstract

The present invention provides a data forward protection method, which comprises: an electronic device receiving, from a server, a data file containing data content and a forwarding right, the forwarding right being set with the maximum forwarding times of the data file and a forwarding tag of whether the data file is allowed to be forwarded; and the electronic device forwarding the data file according to the forwarding right. The present invention also provides a data forward protection device. The technical solution provided by the present invention solves the illegal forwarding problem in the prior art that a user that receives a forwarded file can forward the file again to the other users for free.

Description

Data forwarding protection method and device

The present invention relates to the field of mobile communications, and in particular, to a data forwarding protection method and apparatus. Background technique

Currently, the online app store is an emerging merchant-to-customer selling mobile internet applications.

(Business to Consumer, B2C) or Customer to Consumer (C2C) platform. According to the existing application sales model, in the B2C mode, it is limited to personal purchase and consumption, while the application sharing and transfer in the C2C mode basically only involves the free mode.

The existing Digital Rights Management (DRM) has realized the protection of intellectual property rights of digital content. In practical applications, DRM can protect digital content through combined transmission mode, and combined delivery of DRM (Complicit Delivery) The mode includes: The copyright object (optional) is encapsulated into the DRM file and sent to the device together with the content object, and the digital content intellectual property protection of the DRM can be performed by the copyright object to implement the forwarding of the application in the C2C occasion.

At present, the types of restrictions implemented by copyright objects in DRM include: number of uses (count), time of use (datetime), time interval (interval), and the number of forwardings is not implemented in the copyright object, which leads to the use of DRM. The application sent by the combined sending mode will be forwarded unsupervised by the secondary, that is, the user accepting the forwarded file will forward the file to other users for free, which is contrary to the legitimate forwarding of the application. Therefore, to use DRM technology to achieve legal distribution of C2C applications, it is also necessary to technically limit the number of forwarding. Summary of the invention

In view of this, the main purpose of the present invention is to provide a data forwarding protection method and apparatus. In order to solve the problem of illegal forwarding caused by the user who receives the forwarded file in the prior art, the file can be forwarded to other users for free.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The present invention provides a data forwarding protection method, including:

The electronic device receives a data file that is sent by the server and includes data content and forwarding rights, where the forwarding permission is set with a maximum number of forwarding of the forwarded data file and whether a forwarding flag of the data file is allowed to be forwarded;

The electronic device forwards the data file according to the forwarding authority.

The invention also provides a data forwarding protection device, comprising:

a receiving module, configured to receive a data file that is sent by the server and includes data content and forwarding rights, where the forwarding permission sets a maximum number of forwarding of the forwarding data file and whether a forwarding flag of the data file is allowed to be forwarded;

A processing module, configured to forward the data file according to the forwarding authority.

The beneficial effects of the present invention are as follows:

The present invention determines whether the data file can be forwarded by using the maximum number of times of forwarding and the forwarding flag, and solves the problem that the user who receives the forwarded file in the prior art can forward the file to the other user for free forwarding. The data file can be forwarded and protected, so that the application purchased by the end user can only be forwarded through authorization, thereby realizing the legal forwarding of the C2C occasion, and greatly promoting the sales of the mobile Internet application. DRAWINGS

1 is a flowchart of a data forwarding protection method according to an embodiment of the present invention;

2 is a schematic structural diagram of a DRM application forwarding system according to an embodiment of the present invention;

3 is a schematic structural diagram of a DRM file according to an embodiment of the present invention;

4 is a schematic structural diagram of a data forwarding protection apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a preferred structure of a data forwarding protection apparatus according to an embodiment of the present invention; FIG. 6 is a schematic diagram of an encryption decryption unit processing a DRM file according to an embodiment of the present invention; FIG. 7 is a flowchart of a first client device acquiring a DRM application from a server according to an embodiment of the present invention;

Figure 8 is a flow diagram of a first client device forwarding an application to a second client device in accordance with an embodiment of the present invention. detailed description

The present invention provides a data forwarding protection method and apparatus, which is in a package, in order to solve the problem that the user who receives the forwarding file in the prior art can forward the file to the other user for free. A forwarding field is added to the data file, and the client device forwards the file through the forwarding field, and restricts the file from being unrestricted secondary forwarding again after forwarding. The present invention will be further described in detail below in conjunction with the drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Method embodiment

According to an embodiment of the present invention, a data forwarding protection method is provided. FIG. 1 is a flowchart of a data forwarding protection method according to an embodiment of the present invention. As shown in FIG. 1, a data forwarding protection method according to an embodiment of the present invention includes the following steps. Steps:

Step 101: The electronic device receives a data file that is sent by the server and includes data content and forwarding rights, where the forwarding permission is set with a maximum number of forwarding of the forwarding data file and whether a forwarding flag of the data file is allowed to be forwarded;

Before performing step 101, you need to apply for the content object and permission file to the server. After requesting the content object and permission file from the server, you can also apply to the server for the maximum number of forwarding of the data file.

Preferably, in the embodiment of the present invention, the data file is a DRM file sent by the DRM in a combined transmission mode. Step 102: The electronic device forwards the data file according to the forwarding authority.

In step 102, the electronic device determines whether the data file can be forwarded according to the maximum number of forwarding times and the forwarding flag. If the electronic device can forward, modify the maximum number of forwarding times and the forwarding flag, and carry the data file with the modified maximum forwarding number and the forwarding flag. Forward, otherwise, the forwarding process ends.

Specifically, the following processing is included:

The electronic device determines whether the forwarding flag is allowed to be forwarded;

If it is determined that the forwarding flag is allowed to be forwarded, the electronic device determines whether the maximum number of forwarding times is greater than 0. If it is equal to 0, it determines that the data file cannot be forwarded. If it is greater than 0, it determines that the data file can be forwarded;

If it is determined that the forwarding flag is forbidden to be forwarded, the electronic device determines that the data file cannot be forwarded;

If it can forward, the electronic device decrements the maximum number of forwardings by 1 and modifies the forwarding flag to prohibit forwarding.

The above technical solution of the embodiment of the present invention will be described in detail below by taking the data file as the DRM file sent by the DRM combined transmission mode as an example.

2 is a schematic structural diagram of a DRM application forwarding system according to an embodiment of the present invention. As shown in FIG. 2, the DRM application forwarding system includes: a server, a first client device, a second client device, and a third client device. The client device may be an electronic device loaded with an intelligent platform, such as a computer, a smart phone, or the like, or an electronic device having a simple smart module, such as a smart TV, an intelligent car player, or the like. The first client device requests the content object and the rights file from the server, and requests the number of forwardings N, and the server sends the content object and the rights file to the first client device in the DRM combined sending mode, and forwards the DRM file to the second client device. The first client device determines whether the number of times of forwarding N is greater than 0. If greater than 0, the DRM file is forwarded to the second client device, and when forwarding to the third client device, The first client device determines whether the number of times of forwarding N is greater than 0. If greater than 0, the DRM file is forwarded to the third client device. When forwarding to the Nth client device, the first client device determines whether the number of forwarding times N is greater than 0. If N is equal to 0, forwarding is prohibited.

3 is a schematic structural diagram of a DRM file according to an embodiment of the present invention, as shown in FIG. 3, including a original Distributed Coordination Function (DCF) header, a content object, a rights file, and a newly added custom field (also It may be referred to as a forwarding field. The newly added custom field includes: a forwarding flag Flag, a maximum number of forwarding times N, and a DCF header including a public header and user data.

In the following embodiments, only two client devices are included: the first client and the second client are taken as an example for description. Specifically, the following processing is included:

Step 1: The first client applies for a content object and a rights file to the server, and applies for the number of forwardings;

Step 2: After receiving the request of the first client, the server sends a DRM file (also referred to as a DRM message) encapsulating the content object and the rights file to the first client, and sets a forwarding number N in the permission file according to the request. And set the forwarding flag Flag=0, Flag=0 means non-forwarding (that is, allowing forwarding);

Step 3: After receiving the DRM file, the first client decrypts the DRM file, and reads the forwarding flag Flag in the DRM file to be 0, and determines that the DRM file is sent by the server; Step 4, the first client is forwarding In the case of a DRM file, it is first determined whether N is greater than 0, and if not, the forwarding process is directly jumped out and ends. If yes, the forwarding is allowed, and the forwarding flag Flag is set to 1 and the number of forwarding times is set to N=N-1;

Step 5: The first client sends a DRM file to the second client.

Step 6: The second client receives the DRM file.

Step 7, the second client determines whether the forwarding flag Flag is 1; if not, the DRM file is originated from a server, and the forwarding field does not need to be set, and may be directly used according to the rights file. It can also be forwarded; if it is, the DRM file is forwarded from other clients, and the number of forwarding times is set to N=0, which is prohibited in the next forwarding.

It can be seen from the foregoing that, in the embodiment of the present invention, the foregoing technical solution is adopted, the forwarding of the DRM file is implemented, and the limitation of the second-level forwarding is implemented, and the forwarding protection is implemented, and the technical solution of the embodiment of the present invention is adopted. It also greatly promoted the sales of mobile Internet applications. In addition, the technical solution of the embodiment of the present invention encapsulates the copyright information and the copyright object from the network to the simple smart device, so that the terminal without the network is authorized by the copyright, and the user can also access the network by reading the copyright object. DRM digital content.

The technical solutions of the embodiments of the present invention are specifically described below in conjunction with specific examples.

Example 1

Implementation scenario: User 1 uses the smartphone to purchase the application APP1 from the server, and purchases the number of retransmissions 1 , and the user 1 transfers the application to the smartphone of the user 2.

Step 1 , the user 1 uses the smart phone to purchase the application APP1 from the server, and the number of times the application is forwarded is 1;

Step 2: The server sets the number of forwarding times N to 1, and sets the forwarding flag Flag to 0, which is encapsulated in the file DRM1 together with the application APP1 and the rights file, and will be structured as shown in FIG.

The DRM1 message is sent to the smartphone of the user 1;

Step 3: The user 1 receives the DRM1 message (file DRM1), parses the DRM1 message, and extracts the forwarding flag Flag and the number of forwarding times N in the DRM1 message.

Step 4: The user 1 determines that the forwarding flag Flag is 0, and determines that forwarding is allowed. All authorization functions of APP1 can be used on the smart phone of the user 1, and then the user 1 re-encapsulates the DRM1 file.

Step 5: The user 1 recommends the application to the user 2, and promises to forward the application APP1 to the user 2. Before the DRM1 message is sent, the smart machine of the user 1 parses the DRM1 file, extracts the number of forwardings and the forwarding flag, and determines that N=l is greater than Zero, determine to allow this forwarding; Step 6, user 1 sets the forwarding flag Flag=1, and the number of forwarding times minus 1 is set to N=0; Step 7, user 1 repackages the file DRM1;

Step 8, the user 1 sends the encapsulated file DRM1, that is, the DRM1 message, to the smartphone of the user 2;

Step 9, the user 2's smartphone receives the DRM1 message;

Step 10, the user 2 extracts the forwarding flags Flag and N in the DRM1 message;

Step 11: The user 2 determines the forwarding flag Flag=l, so the number of forwarding times is set to N=0;

In step 12, the user 2 stores the parsed application APP1, and the user 2's smart phone can use all the functions of the APP1 to implement forwarding.

In this example, if user 2 wants to forward APP1 again; because the number of forwardings is N=0, the forwarding is not allowed, and the forwarding behavior is directly terminated, and secondary forwarding is prohibited. If User 1 still wants to forward again, it also determines that the number of forwarded calls is N=0, and forwarding is prohibited.

Example 2

Implementation scenario: User 1 uses the smartphone to purchase the app APP2 from the server, and purchases the number of transfers 2, and transfers the application to the smartphones of users 2 and 3.

Step 1: The server sets the number of forwarding times N to 2, sets the forwarding flag Flag to 0, and encapsulates it in the file DRM2 together with the application APP2 and the rights object, and sends the DRM2 message structured as shown in FIG. 3 to the intelligence of the user 1. Mobile phone

Step 2: User 1 receives the DRM2 message (file DRM2), parses the DRM2 message, and extracts the forwarding flag Flag and the number of forwarding times N in the DRM2 message;

Step 3: The user 1 judges that the forwarding flag Flag is 0, and determines that forwarding is allowed. At this time, all functions of the APP2 can be used on the smart machine of the user 1.

In step 4, the user 1 recommends the application to the user 2 and forwards the application APP2 to the user 2. User 1 parses the DRM2 message before sending the DRM2 message, and extracts the turn in the DRM2 message. Number of times and forwarding flag;

Step 5: User 1 determines that N=2 is greater than zero, and determines that the forwarding is allowed;

Step 6, user 1 sets the forwarding flag Flag=1, and the number of forwarding times minus 1 is set to N=l; Step 7, user 1 encapsulates file DRM2 to form a DRM2 message as shown in FIG. 3; Step 8, user 1 will encapsulate The DRM2 message is sent to the smartphone of the user 2; in step 9, the user 2 receives the DRM2 message;

Step 10, the user 2 extracts the forwarding flags Flag and N in the DRM2 message;

Step 12: The user 2 stores the parsed application APP2, and the smart phone of the user 2 can use all the functions of the APP2 to implement forwarding;

At this time, if user 2 wants to forward APP2 again; since the number of forwardings is N=0, the forwarding is not allowed, and the forwarding behavior is directly terminated, and the secondary forwarding is prohibited.

Step 13, the number of forwarding of the DRM2 message of the user 1 is N=l, so the forwarding can also be performed, and the user 1 selects to forward the APP2 to the user 3;

Step 14. Before sending the DRM2 message, the user 1 parses the DRM2 message, and extracts the forwarding number and forwarding flag in the DRM2 message.

Step 15: User 1 determines that N=l is greater than zero, so the forwarding is allowed;

Step 16, user 1 sets the forwarding flag Flag=1, and the number of forwarding times minus 1 is set to N=0; Step 17, user 1 encapsulates file DRM2, forming a DRM2 message with the structure shown in FIG. 3; Step 18, user 1 will encapsulate The DRM2 message is sent to the smartphone of the user 3; in step 19, the user 3 receives the DRM2 message;

Step 20, the user 3 extracts the forwarding flags Flag and N in the DRM2 message;

Step 21, the user 3 determines the forwarding flag Flag=l, so the number of forwarding times is set to N=0;

In step 22, the user 3 stores the parsed application APP2. At this time, the smartphone of the user 3 can use all the functions of the APP2 to implement forwarding. At this time, if user 3 wants to forward APP2 again; because the number of forwardings is N=0, the forwarding is not allowed, and the forwarding behavior is directly terminated; if user 1 still wants to forward again, because the number of forwardings is N=0, Forwarding is prohibited.

Example 3

Implementation scenario: User 1 uses the smartphone to purchase the app APP3 from the server, and purchases the number of retransmissions 1 to forward the application to the user's smart TV.

Step 1: User 1 uses the smart phone to purchase the application APP3 from the server, and the number of times the application is forwarded is 1;

Step 2: The server sets the number of forwarding times N to 1, sets the forwarding flag Flag to 0, and encapsulates it in the file DRM3 together with the application APP3 and the rights file to form a smart message that the DRM3 message structured as shown in FIG. 3 is sent to the user 1 Mobile phone

Step 3: The smartphone of the user 1 receives the DRM3 message, parses the DRM3 message, and extracts the forwarding flag Flag and the number of forwarding times N in the DRM3 message;

Step 4: The user 1 determines that the forwarding flag Flag is 0, determines that forwarding is allowed, and places the application APP3 in the storage unit for use. At this time, all functions of the APP3 can be used on the smart machine of the user 1;

Step 5, User 1 needs to use APP3 on the TV at home, and the TV is also an intelligent platform, so User 1 forwards APP3 to the smart TV, and User 1's smartphone parses the DRM3 message before sending the DRM3 message, and extracts the DRM3 message. The number of forwardings and the forwarding flag; Step 6, the smartphone of user 1 determines that N=l is greater than zero, and determines that the forwarding is allowed; Step 7, user 1 sets the forwarding flag Flag=1, and the number of forwarding times minus 1 is set to N=0. Step 8, user 1's smartphone package file DRM3, forming a DRM3 message structured as shown in FIG. 3;

Step 9, the user 1's smartphone sends the encapsulated DRM3 message to the smart TV of the user 1; Step 10: The smart TV of the user 1 receives the DRM3 message;

Step 11: The smart TV of the user 1 extracts the forwarding flags Flag and N in the DRM3 message; Step 12, the smart TV of the user 1 determines the forwarding flag Flag=l, so the number of forwarding times is set to N=0; Step 13, the smart TV of the user 1 will The parsed application APP3 is placed in the storage unit. At this time, the smart TV of the user 1 can use all the functions of the APP1 to implement forwarding.

After the above processing, if the smart TV of the user 1 wants to forward the APP3 again, since the number of times of forwarding N=0, the forwarding is not allowed, and the forwarding behavior is directly terminated; if the smartphone of the user 1 still wants to forward again, because The number of forwardings is N=0, and forwarding is prohibited.

Device embodiment

According to an embodiment of the present invention, a data forwarding protection apparatus is provided. FIG. 4 is a schematic structural diagram of a data forwarding protection apparatus according to an embodiment of the present invention. As shown in FIG. 4, a data forwarding protection apparatus according to an embodiment of the present invention includes: The receiving module 40 and the processing module 42. The respective modules of the embodiments of the present invention will be described in detail below.

The receiving module 40 is configured to receive, by the server, a data file that includes data content and forwarding rights, where the forwarding permission is set with a maximum number of forwarding of the forwarding data file and whether a forwarding flag of the data file is allowed to be forwarded; In the embodiment of the invention, the data file is a DRM file sent in the DRM combined transmission mode.

The processing module 42 is configured to forward the data file according to the forwarding authority.

The embodiment of the present invention may further include: an application module, configured to apply for a content object and a rights file to the server; after applying for the content object and the rights file to the server, the application module may further apply to the server for the maximum number of times of forwarding the data file.

Specifically, the processing module 42 is configured to determine whether the data file can be forwarded according to the maximum number of forwarding times and the forwarding flag, and if the forwarding is possible, modify the maximum forwarding number and the forwarding flag, and carry the modified maximum forwarding number and the forwarding flag data. The file is forwarded, otherwise, the forwarding process ends. Before ending the forwarding process, the processing module 42 can set the maximum number of forwarding times. Set to 0.

Specifically, the processing module 42 determines whether the forwarding flag is allowed to be forwarded; if it is determined that the forwarding flag is allowed to be forwarded, it determines whether the maximum number of forwarding times is greater than 0, and if equal to 0, determines that the data file cannot be forwarded, and if greater than 0, determines The data file can be forwarded; if it is determined that the forwarding flag is forbidden to forward, it is determined that the data file cannot be forwarded; if it can be forwarded, the maximum number of forwarding times is decremented by 1, and the forwarding flag is modified to prohibit forwarding.

It should be noted that the data forwarding protection device in the embodiment of the present invention is disposed in the client device, and the module included in the data forwarding protection device is a preferred structure. In practical applications, various transformations can be performed. For example, FIG. 5 is A preferred structure of the data forwarding protection device in the embodiment of the present invention is as shown in FIG. 5. The processing module 42 in FIG. 4 can be divided into: an encryption and decryption unit, and a sending unit. In addition, the data forwarding protection apparatus in the embodiment of the present invention may further include: a storage unit, where the storage unit may be used to store the content object and the rights file carried in the DRM file; that is, the data forwarding protection device in the client device includes a receiving unit. , a sending unit, an encryption and decryption unit, and a storage unit.

6 is a schematic diagram of processing an DRM file by an encryption and decryption unit according to an embodiment of the present invention. As shown in FIG. 6, the encryption and decryption unit performs a message (Message) parsing, forwarding field parsing, copyright parsing, DCF parsing by using a decryption function. And then obtaining the content object, and then the encryption and decryption unit sets and encapsulates the DRM file through the encryption function, including: forwarding field setting, that is, setting the forwarding flag Flag and the number of forwarding, forwarding field packaging, copyright packaging, DCF packaging, message ( Message) package.

Implementation scenario: The first client device uses the smartphone APP1 purchased from the server and purchases the number of forwardings 1 , and the first client device transfers the application to the smartphone of the second client device.

Step 1: The first client device uses the smartphone to purchase an application from the server through the application module. APP1 , and the number of applications for forwarding is 1;

Step 2: The server sets the forwarding number N to 1, sets the forwarding flag Flag to 0, encapsulates it in the file DRM1 together with the application APP1 and the rights file, and sends the DRM1 message structured as shown in FIG. 3 to the first client device. Smartphone

Step 3, FIG. 7 is a flowchart of the first client device acquiring the DRM application from the server according to the embodiment of the present invention. As shown in FIG. 7, the first client device receives the DRM1 message (file DRM1) through the receiving unit, and decrypts by encryption. The unit parses the DRM1 message, and extracts the forwarding flag Flag and the number of forwarding times N in the DRM1 message;

Step 4: The receiving unit of the user 1 determines that the forwarding flag Flag is 0, and determines that forwarding is allowed. All the authorization functions of APP1 can be used on the smart machine of the user 1, and then the receiving unit of the user 1 calls the encryption and decryption unit to re-encapsulate the DRM1 file. And storing the encapsulated DRM1 file in the storage unit;

At this time, if user 1 still wants to forward again, because the number of forwardings is determined to be N=0, the sending unit prohibits forwarding, and the protection of the number of legal forwardings is realized.

Step 5: The user 1 recommends the application to the user 2, and promises to forward the application APP1 to the user 2. FIG. 8 is a flowchart of the first client device forwarding the application to the second client device according to the embodiment of the present invention. 8 is shown, before the sending unit of the smart machine of the user 1 sends the DRM1 message, the sending unit calls the encryption and decryption unit, the encryption and decryption unit parses the DRM1 file, extracts the number of forwardings and the forwarding flag, and the sending unit determines that N=l is greater than zero. It is determined that the forwarding is allowed, and if N=0, the forwarding operation is ended;

Step 6, the sending unit of the user 1 sets the forwarding flag Flag to 1, and sets the forwarding number minus 1 to N=0;

Step 7, the user 1 sending unit calls the encryption and decryption unit again to repackage the file DRM1; Step 8, the sending unit of the user 1 sends the encapsulated file DRM1, that is, the DRM1 message to the smartphone of the user 2; Step 9, the user 2's smartphone receives the DRM1 message through the receiving unit; Step 10, the receiving unit of the user 2 calls the encryption and decryption unit to extract the forwarding flags Flag and N in the DRM1 message;

Step 11: The receiving unit of the user 2 determines the forwarding flag Flag=l, so the number of forwarding times is set to N=0. If the receiving unit of the user 2 determines that the flag is not equal to 1, the receiving unit calls the encryption and decryption unit to repackage the file DRM1;

Step 12: The receiving unit of the user 2 places the parsed application APP1 in the storage unit for storage, and the user 2's smartphone can use all the functions of the APP1 to implement forwarding.

In this example, if user 2 wants to forward APP1 again; because the number of forwardings is N=0, the forwarding is not allowed, and the forwarding behavior is directly terminated, and secondary forwarding is prohibited.

The embodiment of the present invention determines whether the data file can be forwarded by using the maximum number of times of forwarding and the forwarding flag. The user who receives the forwarding file in the prior art can implement the forwarding protection for the file again, so that the application purchased by the terminal user can only be authorized. Forwarding, thus achieving legal forwarding of C2C occasions, and greatly promoting the sales of mobile Internet applications.

While the preferred embodiments of the present invention have been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.

Claims

Claim

A data forwarding protection method, the method comprising:

The electronic device receives a data file that is sent by the server and includes data content and forwarding rights, where the forwarding authority is provided with a maximum number of times of forwarding the data file and whether a forwarding flag of the data file is allowed to be forwarded;

2. The method according to claim 1, wherein the electronic device forwards the data file according to the forwarding authority:

Determining, by the electronic device, whether the data file can be forwarded according to the maximum number of forwarding times and the forwarding flag, and if the forwarding is possible, modifying the maximum number of forwardings and the forwarding flag, and carrying the modified location The maximum number of forwardings and the data file of the forwarding flag are forwarded, otherwise, the forwarding is ended.

3. The method according to claim 1, wherein the data file is a DRM file sent by a digital rights management DRM combined transmission mode.

The method according to claim 2, wherein the electronic device determines whether the data file can be forwarded according to the maximum number of forwardings and the forwarding flag:

Determining, by the electronic device, whether the forwarding flag is allowed to be forwarded;

If it is determined that the forwarding flag is allowed to be forwarded, the electronic device determines whether the maximum number of forwarding times is greater than 0, and if equal to 0, determines that the data file cannot be forwarded, and if greater than 0, determines the data file. Capable of forwarding;

If it is determined that the forwarding flag is forbidden to forward, the electronic device determines that the data file cannot be forwarded.

The method according to claim 2, wherein if the forwarding is possible, modifying the maximum number of forwardings and the forwarding flag is:

If it can be forwarded, the maximum number of forwardings is decremented by 1, and the forwarding flag is modified to Forwarding is prohibited.

6. A data forwarding protection device, the device comprising:

a receiving module, configured to receive a data file that is sent by the server and includes a data content and a forwarding right, where the forwarding permission is configured with a maximum number of forwardings for forwarding the data file and whether a forwarding flag of the data file is allowed to be forwarded;

And a processing module, configured to forward the data file according to the forwarding authority.

The device according to claim 6, wherein the processing module is configured to: determine, according to the maximum number of forwardings and the forwarding flag, whether the data file can be forwarded, and if it can be forwarded, modify the The maximum number of forwardings and the forwarding flag are described, and the data file carrying the modified maximum number of forwarding times and the forwarding flag is forwarded, otherwise, the forwarding is ended.

8. The apparatus according to claim 6, wherein the data file is a DRM file transmitted by a digital rights management DRM combined transmission mode.

The device of claim 7, wherein the processing module is specifically configured to: determine whether the forwarding flag is allowed to be forwarded;

If it is determined that the forwarding flag is allowed to be forwarded, it is determined whether the maximum number of forwarding times is greater than 0. If it is equal to 0, it is determined that the data file cannot be forwarded. If it is greater than 0, it is determined that the data file can be forwarded.

If it is determined that the forwarding flag is forbidden to forward, it is determined that the data file cannot be forwarded.

The apparatus according to claim 7, wherein the processing module is specifically configured to: if the forwarding is possible, reduce the maximum number of forwardings by one, and modify the forwarding flag to prohibit forwarding.