KR101319562B1 - System and Method for Preventing The Leaking of Digital Content - Google Patents

Abstract

Disclosed are a system and method for preventing digital content leakage. The digital content leakage prevention system includes a digital content layer generator that generates a digital content layer displaying digital content, a security layer generator that generates a security layer including security information based on information of a user terminal, and a digital content layer. The digital content layer generated by the generation unit and the security layer generated by the security layer generation unit may include an information display unit which overlaps and displays the display device of the user terminal so that the security layer is overlaid. Therefore, illegal leakage of digital content through photographing or screen capture can be prevented.

Description

System and Method for Preventing The Leaking of Digital Content}

The present invention relates to a system and method for preventing digital content leakage, and more particularly, to display digital content by using a user terminal such as a computer terminal or a portable terminal. The present invention relates to a technology for preventing the leakage of digital content that may occur through screen capture.

In recent years, almost all tasks or services in general life such as office work, payment service, certificate issuance, banking, and e-commerce are performed through online and computerized environment. In such an online and computerized environment, digital content is a target for generating, viewing, storing, editing, and transmitting information. In this case, the digital content may mean various types of digital information including an image, text, multimedia, and the like, such as a digital document and a video.

However, such digital content is very vulnerable to leakage through illegal behavior because it is easy to copy or transfer without loss of the information due to the characteristics of digital information. Therefore, in order to provide a sound digital content usage environment, a protection means, that is, a security system, which can prevent digital content from illegal acts is essential. For example, digital content may be protected through an encryption and decryption system, a watermark or fingerprinting system, and a screen capture prevention system.

The screen capture prevention system may be referred to as a system for preventing the leakage of digital content by illegally capturing, storing, using, and distributing digital content displayed through a terminal such as a PC. The screen capture prevention system may be implemented in various forms.

For example, Korean Patent Publication No. 2004-0033540 discloses a screen capture prevention system for digital works. The capture prevention system detects a request for the use of a system service and a system function that the application programs request to the system for a system service using the application program, and analyzes a service request pattern to block illegal capture and information change. In addition, Korean Patent Laid-Open Publication No. 2006-0032332 discloses a still image capture prevention system that prevents capturing a normal and complete screen when capturing still images.

However, such a conventional capture prevention system is inevitable to maintain the system according to the change of the screen capture type and the increase of the screen capture program, and the capture prevention function is useless for the leakage of photos and videos by the camera or the mobile device. Can be. In addition, screen capture prevention in a mobile device also has a difficult problem.

As mentioned above, the conventional capture prevention system is inevitably costly for the maintenance of the system, and is essential for leakage through pictures and videos on the screen and information leakage by screen capture on a mobile device. There is a problem that is impossible to defend. Therefore, there is an urgent need to develop a technology that can reliably and efficiently prevent the leakage of digital content by screen capture.

The present invention is to solve this problem, when displaying the digital content through a user terminal, such as a computer terminal or a portable terminal, by including the information associated with the user terminal or the user on the screen along with the digital content, the user terminal It is an object of the present invention to provide a digital content leakage prevention system and method that can prevent illegal leakage of digital content that can be generated through the screen capture.

In order to achieve this object, the present invention provides a digital content leakage prevention system in an aspect. The digital content leakage prevention system includes a digital content layer generator for generating a digital content layer for displaying digital content, a security layer generator for generating a security layer including security information based on information of a user terminal, and the And an information display unit displaying the digital content layer and the digital content layer in an overlapping form on a display device of the user terminal such that the security information of the security layer overlaps the digital content of the digital content layer.

The security layer generator may generate the security information including the information of the user terminal and apply a predetermined transparency to the generated security information. The information of the user terminal may include at least one of terminal identification information, IP information, a media access control (MAC) address, and login information of the user terminal.

The security information may include at least one of a text indicating information of the user terminal, information encrypting the information of the user terminal, and a digital watermark including information of the user terminal. The size of the security layer may be any one of a size corresponding to a window in which the digital content layer is displayed and a size corresponding to the display screen.

The security layer generator may scan the digital content, collate the scanned digital content with security element information of a database, and determine whether a security element is included in the digital content based on the collation. The security layer generating unit detects a position of a security element included in the digital content and sets the position of the security information on the security layer so that the security information is displayed to overlap the area corresponding to the position of the detected security element. Can be specified.

The digital content leakage prevention system may further include a digital content selection unit for selecting the digital content according to a selection request signal input from the outside. The digital content layer generator may extract and reproduce the digital content selected by the digital content selector from a database.

On the other hand, in order to achieve the above object of the present invention, the present invention provides a digital content leakage prevention method in another aspect. The digital content leakage prevention method may include: generating a digital content layer displaying digital content, generating a security layer including security information based on information of a user terminal, and generating the digital content layer of the digital content layer. And displaying the digital content layer and the digital content layer in an overlapping form on a display device of the user terminal so that the security information of the security layer overlaps with the content.

The generating of the security layer may include generating the security information including the information of the user terminal, and applying a first predetermined transparency to the generated security information.

The security information may include at least one of a text indicating information of the user terminal, information encrypting the information of the user terminal, and a digital watermark including information of the user terminal.

The digital content leakage prevention method may further include scanning the digital content, collating the scanned digital content with security element information of a database, and determining whether the digital content includes a security element based on the collation. The method may further include determining.

The digital content leakage prevention method may further include detecting a position of a security element included in the digital content, and displaying the security information on the security layer so that the security information overlaps an area corresponding to the position of the detected security element. The method may further include specifying a location of the information.

The digital content leakage prevention method may further include selecting the digital content according to a selection request signal input from the outside. The generating of the digital content layer may include extracting and playing the selected digital content from a database.

On the other hand, the present invention may provide a system of another aspect in order to achieve the above object. The system may include a service server and a user terminal interoperating with each other through a communication network. In this case, the service server may transmit the digital content requested from the user terminal to the user terminal. The user terminal generates a digital content layer displaying the digital content received from the service server, generates a security layer including security information based on the information of the user terminal, and generates the digital content layer of the digital content layer. The digital content layer and the digital content layer may be displayed in an overlapping form on the display device of the user terminal so that the security information of the security layer overlaps with the content.

The user terminal may generate the security information including the information of the user terminal and apply a predetermined transparency to the generated security information. The security information may include at least one of a text indicating information of the user terminal, information encrypting the information of the user terminal, and a digital watermark including information of the user terminal. The information of the user terminal may include at least one of terminal identification information, IP information, a media access control (MAC) address, and login information of the user terminal.

On the other hand, the present invention provides a system in another aspect in order to achieve the above object of the present invention. The system may include a service server and a user terminal interoperating with each other through a communication network.

The service server transmits the digital content requested from the user terminal to the user terminal, generates a security layer including security information based on the information of the user terminal obtained from the user terminal, and transmits it to the user terminal. Can be. The user terminal generates a digital content layer displaying the digital content received from the service server, and displays the security information of the security layer on the display device of the user terminal so that the digital information of the digital content layer is superimposed. The digital content layer and the digital content layer may be displayed in an overlapping form.

The service server requests the user terminal to receive the information of the user terminal from the user terminal, generates the security information including the received information of the user terminal, and transmits a predetermined transparency to the generated security information. Can be applied.

On the other hand, in order to achieve the above object of the present invention, the present invention provides a leak information detection method in another aspect. The leakage information detecting method may include extracting the security information from screen information in which a digital content layer displaying digital content and a security layer including security information based on information of a user terminal are overlapped and displayed; Determining the type of security information, and extracting information of the user terminal corresponding to the security information from the security information based on the determined type of the security information.

As described above, according to the present invention, when displaying digital content that requires protection in a user terminal such as a computer terminal or a portable terminal, a security layer including information related to the user terminal or the user may be overlapped and displayed on the digital content. have. Therefore, it is possible to prevent the illegal leakage of digital content that may be generated through the camera capture or screen capture in the user terminal, it is possible to easily track the information of the leaked user terminal even if the leakage occurs. In addition, there is no need for a separate maintenance cost or upgrade cost for operating the spill prevention system.

1 is a block diagram showing the configuration of a digital content leakage prevention system according to a preferred embodiment of the present invention.
FIG. 2 illustrates an example of a screen displayed on a display apparatus when the security information of the security layer is implemented as text representing information of the user terminal or information encrypted by the information of the user terminal.
3 illustrates an example of a screen displayed on a display device when the security information of the security layer is implemented as a watermark including information of a user terminal.
4 illustrates an example of a screen of a display device that overlaps and displays a security layer.
5 is a flowchart illustrating a digital content leakage prevention method according to a preferred embodiment of the present invention.
6 is a flowchart illustrating a digital content leakage prevention system according to another exemplary embodiment of the present invention.
7 is a flowchart illustrating a digital content leakage prevention system according to another preferred embodiment of the present invention.
8 is a block diagram illustrating a digital content leakage detection system according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art will readily understand the technical aspects of the present invention. In the following preferred embodiments of the present invention, specific technical terms are used for the sake of clarity. It is to be expressly understood, however, that the invention is not limited to the specific terms thereof, and that each specific term includes all technical synonyms that operate in a similar manner to achieve a similar purpose.

1 is a block diagram showing the configuration of a digital content leakage prevention system according to a preferred embodiment of the present invention.

As shown in FIG. 1, the digital content leakage prevention system 10 may be provided in the user terminal 1. The user terminal 1 may be a fixed computer terminal such as a PC, a digital TV, or a portable terminal such as a smartphone, a mobile phone, a notebook computer, a personal digital assistant (PDA), or the like.

The user terminal 1 may include a display device 30 for displaying information. The display device 30 may be, for example, a liquid crystal display (LCD) panel, a plasma display panel (PDP), an organic light emitting diode (OLED) panel, or the like. The user terminal 1 may also include a database 40 for storing and managing data. The digital content leakage prevention system 10 may interwork with the display device 30 and the database 40.

The digital content leakage prevention system 10 may include a digital content selector 11, a digital content layer generator 13, a security layer generator 15, an information display unit 17, and the like.

The digital content selection unit 11 may perform a function of selecting digital content to be displayed according to a selection request signal by a user. The digital content may be information including a text or an image such as a digital document, a digital certificate, or a video.

The content selection unit 11 may display a list of digital contents stored in the database 40 through the display device 30, and provide an input interface for allowing a user to select and request a desired digital content. have. In this case, when the user requests specific digital content from the list, the content selector 11 may transmit a selection signal indicating that the requested content is selected to the digital content layer generator 13.

The digital content layer generator 13 may perform a function of generating a digital content layer for displaying the digital content selected by the digital content selector 11 on the display device 30. The digital content layer generator 13 extracts digital content corresponding to the selection signal transmitted from the digital content selector 11 from the database 40 and displays the digital content on the display device 30 by reproducing the extracted digital content. can do. The digital content layer may mean a layer on a graphic that displays digital content to be played back.

At this time, the digital content that is reproduced and displayed, ie, the digital content layer, will be described later, but the security layer is covered with the graphic by the information display unit 17 so that the security information of the security layer is overlapped and displayed on the digital content. On the other hand, if the digital content is encoded or encrypted, the digital content layer generator 13 may decrypt and reproduce the encoded or encrypted digital content.

The security rare generator 15 may perform a function of generating a security layer including security information based on the information of the user terminal 1. The information of the user terminal 1 may be terminal identification information of the user terminal 1, IP information, device information such as a MAC (Media Access Control) address, or the like, or user information such as login information of the user. The information of the user terminal 1 may include at least one of the above information.

The security layer generating unit 15 extracts information of the user terminal 1 from the user terminal 1, generates security information including the extracted information of the user terminal 1, and transmits predetermined transparency to the generated security information. By applying, a security layer for overlapping the digital content layer can be generated.

In this case, the transparency may be variously set within a range so that the user does not feel designation when viewing the digital content of the digital content layer. The setting value of the transparency may be managed by the security layer generator 15 or stored and managed in the database 40. The security information may be a text indicating information of the user terminal 1, a digital watermark including information of the information of the user terminal 1 and information of the user terminal 1.

Meanwhile, the security layer generator 15 scans the digital content selected by the digital content selector 11, determines whether there is a security element in the scanned digital content, and generates the security layer only when there is a security element. It may be.

For example, the security layer generator 15 scans the digital content and compares the scanned digital content with the security element information previously stored in the database 40 to determine whether there is a security element in the digital content. If there is an element, a security layer is created. If there is no element, a security layer may not be created.

The security element is an element for determining whether the digital content is a document that requires security. For example, a phrase such as 'confidential' or 'confidential' of a digital document, an image of a specific form, or a 'resident registration number' or '000000-0000000' of a certificate. It may mean a specific image, such as a text or a seal image, which requires security such as, or the like. The information of these security elements may be stored and managed in advance in the database 40, and the security layer generator 15 may determine whether there is a security element in the digital content using the database 40.

In addition, the security layer generator 15 detects the position of the area where the security element is located in the scanned digital content, and secures the security information to be located in the area corresponding to the position of the detected security element when generating the security layer. You can also specify the location of security information on the racer. That is, the security layer generator 15 generates a security layer such that the security information of the security layer overlaps the security element of the digital content. This is to more strictly ensure the security of security-sensitive information in digital content.

The security layer generator 15 may generate the size of the security layer to a size corresponding to a window in which the digital content is displayed, or may generate a size corresponding to the entire screen of the display device.

The information display unit 17 displays a function of overlapping the digital content layer and the security layer graphically on the display device 30 of the user terminal so that the security information of the security layer overlaps with the digital content of the digital content layer. Can be done.

For example, the information display unit 17 may locate and display a security layer having transparency set on the digital content layer, which is a graphic layer displaying the reproduced digital content. Therefore, the security information of the security layer is superimposed on the reproduced digital content.

FIG. 2 illustrates an example of a screen displayed on the display device 30 when the security information of the security layer is implemented as text indicating information of the user terminal 1 or information encrypted by the information of the user terminal 1. to be.

As shown in FIG. 2, the digital content of the digital content layer CL is a 'business registration proof source', and the security layers SL1 and SL2 are text in which 'MakAny', which indicates information of a user terminal, is inclined or square. In the case of including a plurality of security information arranged in the area of the, the information display unit 17 on the screen (DP1, DP2) of the 'business registration certificate of the digital content layer' and the text image of the security layer Overlapping will be displayed.

In this case, since the text of the security layer is information which directly displays information of the user terminal 1, if the displayed screens DP1 and DP2 are leaked through shooting or screen capture, the user may know where the user is leaked. Can be immediately determined.

On the other hand, when the digital content of the digital content layer (CL) is the 'business registration proof source', and the security layer SL3 is an image of information (for example, repeated encryption code) encrypted information of the user terminal, the display device On the screen DP3 of 30, the information display unit 17 overlaps the image of the 'business registration certificate source' of the digital content layer and the encrypted information of the security layer. In this case, if the displayed screen DP3 is leaked out through photographing or screen capture, the encrypted information may be decrypted to determine where the screen DP3 is leaked.

3 illustrates an example of a screen displayed on the display device 30 when the security information of the security layer is implemented as a watermark including the information of the user terminal 1.

As shown in FIG. 3, the digital content of the digital content layer CL is a 'business registration certification authority', and the security layers SL4, SL5, and SL6 include information of the user terminal 1. For example, when a single pattern is tilted in a diagonal direction of the screen, a single pattern is arranged in a horizontal direction at the center of the screen, or a plurality of patterns are regularly arranged in a predetermined area), the display apparatus 30 may be configured. On the screens DP4, DP5, and DP6, the information display unit 17 displays the 'business registration certificate source' of the digital content layer and the watermark of the security layer.

In this case, if the displayed screens DP4, DP5, DP6 are leaked out through photographing or screen capture, the watermark may be decoded to determine where the screens DP4, DP5, DP6 are leaked out. . The watermark may be an unrecognized watermark that includes information but appears to be a general design in the eyes of the user.

In the above-described example illustrated in FIGS. 2 and 3, examples of implementing the security layers SL1 to SL6 in six forms have been described. In the security information configuration of the security layer, text, encrypted text, and watermark designs are illustrated. Of course, the arrangement, number, color and the like can be variously modified. In addition, it is of course possible to configure a security layer including security information in the form of a mixture of at least two or more of the text, encrypted text, watermark.

4 is an exemplary diagram for exemplarily displaying a screen of the display device 30 that overlaps and displays a security layer.

As shown in FIG. 4, the information display unit 17 may display the security layer in an overlapping form only in a window where digital content is displayed, or may display the security layer in an overlapping form on the entire screen of the display device 30. have.

To this end, the security layer generator 15 may generate the size of the security layer in a size corresponding to a window in which the digital content is displayed, or in a size corresponding to the entire screen of the display device.

The security layer generation unit 15 and the information display unit 17 may provide a user interface for setting the size and size of the security layer to be applied to each area, and manage the set information.

5 is a flowchart illustrating a digital content leakage prevention method according to a preferred embodiment of the present invention.

As shown in FIG. 5, the digital content leakage prevention system 10 may select digital content according to a request signal from a user (step S1). The digital content may be information including a text or an image such as a digital document, a digital certificate, or a video.

For example, the digital content leakage prevention system 10 may display a list of digital contents stored in the database 40 through the display device 30, and input a user to select and request a desired digital content. It can provide an interface. When a user requests specific digital content from the list via the input interface, the requested content can be selected.

Subsequently, the digital content leakage prevention system 10 may generate a digital content layer for displaying the selected digital content on the display device 30 (step S2). For example, the digital content leakage prevention system 10 may extract the selected digital content from the database 40, generate a digital content layer, and display the extracted digital content on the digital content layer.

On the other hand, the digital content leakage prevention system 10 scans the selected digital content (step: S3), and then compares the elements of the scanned digital content with the secure element information stored in the database 40. It may be determined whether there is a security element in the content (step: S4). In this case, if there is no security element, the security layer is not generated, and the digital content layer is displayed as it is through the display device 30 (step S7).

If the digital content includes a security element, the digital content leakage prevention system 10 may generate a security layer including security information based on the information of the user terminal 1 (step S5). ). For example, the digital content leakage prevention system 10 extracts information of the user terminal 1 from the user terminal 1, generates security information including the extracted information of the user terminal 1, and generates generated security. By applying a predetermined transparency to the information, a security layer for overlapping the digital content layer can be generated.

As mentioned above, the information of the user terminal 1 may be terminal identification information of the user terminal 1, device information such as IP information, MAC address, or user information such as login information of the user. The information of the user terminal 1 may include at least one of the above information. The security information may be a text indicating information of the user terminal 1, a digital watermark including information of the information of the user terminal 1, information of the user terminal 1, and the like.

On the other hand, the digital content leakage prevention system 10 detects the position of the region where the security element is located in the scanned digital content, and when the security layer is generated, the security information is located in the region corresponding to the position of the detected security element. You can also specify the location of security information on the security racer. That is, the security information of the security layer overlaps the security element of the digital content.

Next, the digital content leakage prevention system 10 applies the digital content layer and the security layer to the display device 30 of the user terminal 1 such that the security information of the security layer overlaps with the digital content of the digital content layer. Overlapping on the graphic can be displayed (step: S6).

For example, the digital content leakage prevention system 10 may locate and display a security layer having transparency set on the digital content layer, which is a graphic layer displaying the reproduced digital content. Therefore, the security information of the security layer is superimposed on the digital content displayed on the screen.

In the above, the configuration and operation of the digital content leakage prevention system 10 according to an exemplary embodiment of the present invention have been described. According to the digital content leakage prevention system 10, when displaying digital content that requires protection in a user terminal 1 such as a computer terminal or a portable terminal, information related to the device or the user, that is, information of the user terminal 1 The security layer including the overlapping digital content can be displayed.

Therefore, the user terminal 1 can prevent the illegal intention of leaking digital content that may be generated through the use of a camera or screen capture, and even if the leakage occurs, the information of the leaked user terminal 1 can be easily Can be traced In addition, there is no need for a separate maintenance cost or upgrade cost to operate the spill prevention system.

On the other hand, the technical idea of the digital content leakage prevention system according to the present invention is of course applicable to the server and client system. Hereinafter, embodiments of digital content leakage prevention systems that can prevent leakage of digital content in a system in which a user terminal receives and displays digital content from a service server that serves content will be described.

6 is a flowchart illustrating a digital content leakage prevention system according to another exemplary embodiment of the present invention.

As shown in FIG. 6, the digital content leakage prevention system according to another exemplary embodiment of the present invention may include a service server 50 and a user terminal 60 that interoperate with each other through a communication network.

In this case, the service server 50 may perform a role of providing digital content at the request of the user terminal 60 (steps S11-12). The user terminal 60 generates a digital content layer displaying the digital content transmitted from the service server 50 (step S13), and on the other hand, secure information based on the information of the user terminal 60. A security layer may be generated (step S14). The user terminal 60 may display the digital content of the digital content layer in an overlapping form on the display device of the user terminal 60 such that the digital content of the digital content layer overlaps with the security information of the security layer (step S15).

In the above embodiment, the digital content is provided by the service server 50, and the user terminal 60 generates a security layer to overlap the digital content and displays the digital content to protect the digital content provided from the service server 50. It's a leak prevention system. Detailed description of each step has been described in detail in the previous embodiment will be omitted. Such a digital content leakage prevention system may be usefully applied to a system such as issuing a certificate to a user terminal in a government office, a school, a hospital, or the like.

7 is a flowchart illustrating a digital content leakage prevention system according to another preferred embodiment of the present invention.

As shown in FIG. 7, the digital content leakage prevention system according to another preferred embodiment of the present invention may include a service server 70 and a user terminal 80 that interoperate with each other through a communication network.

The service server 70 may transmit digital content to the user terminal 80 in response to a request from the user terminal 80 (steps S21 and S22). On the other hand, the service server 70 requests the information of the user terminal 80 to the user terminal 80 (step: S23), the information of the user terminal 80 transmitted from the user terminal 80 After receiving (step: S24), a security layer including security information based on the received information of the user terminal 80 can be generated (step: S25) and transmitted to the user terminal 80 (step: : S26).

The user terminal 80 generates a digital content layer displaying the digital content received from the service server 70 (step S27), and the security received from the digital content layer and the service server 70. The display may be displayed on the display device of the user terminal 80 in an overlapped form so that the layers are overlapped (step S28).

The above embodiment provides a digital content and security layer in the service server 70, and the user terminal 80 overlaps and displays the digital content and security layer using the digital content and security layer provided from the service server 70. It explains. As in the embodiment with reference to FIG. 6 above, the embodiment can be usefully applied to a system for issuing a certificate to a user terminal in a government office, a school, a hospital, or the like.

8 is a block diagram illustrating a digital content leakage detection system according to a preferred embodiment of the present invention.

As illustrated in FIG. 8, the digital content leakage detection system 90 may include a leakage screen input unit 92, a security information extraction unit 94, and an information extraction unit 96 of a user terminal.

The leaked screen input unit 92 may perform a function of receiving a leaked screen image through screen capture, photo shooting, or the like. The input screen image is an image displayed on a user terminal of the digital content leakage prevention system, that is, a screen on which a security layer including a digital content layer displaying digital content and security information based on information of the user terminal is displayed. It may be an image.

The security information extraction unit 94 may extract security information from the screen image input from the leaked screen input unit 92. The information extracting unit 96 of the user terminal may grasp the type of the extracted security information, and may extract the information of the user terminal from the security information and display it on the display means. The user can then grasp the leaked information on the screen.

As mentioned above, the security information may be, for example, text representing information of the user, information encrypted with information of the user terminal, a watermark including information of the user terminal, and the like. If the security information is a text indicating the user's information, the user can visually identify the leakage path.

On the other hand, in the case of encrypted information or watermarks, the user cannot visually check the information of the user terminal. Accordingly, the information extracting unit 96 of the user terminal determines whether the security information of the leaked screen is encrypted information, watermark, and the like, and performs decryption, watermark reading, etc. according to the determined result. We can extract information from

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be understood that the invention may be practiced otherwise than as described herein. Accordingly, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

1: user terminal
10: Digital Content Leakage Prevention System
11: digital content selection unit
13: digital content layer generator
15: security layer generator
17: information display unit
30: Display device
40: Database

Claims (21)

A digital content layer generator for generating a digital content layer displaying digital content;
A security layer generator for generating a security layer including security information based on information of a user terminal; And
An information display unit for displaying the digital content layer and the security layer in an overlapping form on a display device of the user terminal such that the security information of the security layer overlaps the digital content of the digital content layer;
The security layer generator,
Detecting a location of a security element included in the digital content, and designating a location of the security information on the security layer such that the security information is superimposed on an area corresponding to the location of the detected security element. Digital Information Leakage Prevention System.
The method of claim 1, wherein the security layer generator,
And generating the security information including the information of the user terminal and applying a predetermined transparency to the generated security information.
The method of claim 2, wherein the security information comprises at least one of a text representing information of the user terminal, information encrypting the information of the user terminal, and a digital watermark including information of the user terminal. Digital information leakage prevention system.
The method of claim 2, wherein the security layer generator,
And scan the digital content, collate the scanned digital content with security element information in a database, and determine whether the digital content includes a security element based on the collation.
delete The system of claim 1, wherein the size of the security layer is one of a size of a window in which the digital content layer is displayed and a size of the display screen.
The apparatus of claim 1, further comprising a digital content selection unit for selecting the digital content according to a selection request signal input from an external device.
And the digital content layer generator extracts and reproduces the digital content selected by the digital content selector from a database.
The system of claim 1, wherein the information of the user terminal comprises at least one of terminal identification information, IP information, a media access control (MAC) address, and login information of the user terminal.
Generating a digital content layer representing digital content;
Generating a security layer including security information based on information of a user terminal; And
Displaying the digital content layer and the security layer in an overlapping form on a display device of the user terminal such that the security information of the security layer overlaps the digital content of the digital content layer.
Detecting a location of a secure element included in the digital content; And
And specifying the location of the security information on the security layer such that the security information overlaps the area corresponding to the location of the detected security element.
The method of claim 9, wherein generating the security layer comprises:
Generating the security information including information of the user terminal; And
And applying a first predetermined transparency to the generated security information.
The method of claim 10, wherein the security information comprises at least one of a text representing information of the user terminal, information encrypting the information of the user terminal, and a digital watermark including information of the user terminal. To prevent digital information leakage.
11. The method of claim 10, further comprising: scanning the digital content;
Collating the scanned digital content with secure element information in a database; And
And determining whether a security element is included in the digital content based on the collation.
delete The method of claim 9, further comprising the step of selecting the digital content according to a selection request signal input from the outside,
Generating the digital content layer,
And extracting and playing the selected digital content from a database.
The method of claim 9, wherein the information of the user terminal comprises at least one of terminal identification information, IP information, a media access control (MAC) address, and login information of the user terminal.
A service server and a user terminal interworking with each other through a communication network,
The service server transmits the digital content requested from the user terminal to the user terminal,
The user terminal generates a digital content layer displaying the digital content received from the service server, generates a security layer including security information based on the information of the user terminal, and generates the digital content layer of the digital content layer. Displaying the digital content layer and the security layer in an overlapping form on a display device of the user terminal so that the security information of the security layer overlaps with the content;
The user terminal comprises:
Detecting a location of a security element included in the digital content, and designating a location of the security information on the security layer such that the security information is superimposed on an area corresponding to the location of the detected security element. system.
The system of claim 16, wherein the user terminal generates the security information including the information of the user terminal and applies a predetermined transparency to the generated security information.
The method of claim 16, wherein the security information includes at least one of a text representing information of the user terminal, information encrypting the information of the user terminal, and a digital watermark including information of the user terminal.
And the information of the user terminal includes at least one of terminal identification information, IP information, a media access control (MAC) address, and login information of the user terminal.
A service server and a user terminal interworking with each other through a communication network,
The service server transmits the digital content requested from the user terminal to the user terminal, generates a security layer including security information based on the information of the user terminal obtained from the user terminal, and transmits it to the user terminal. and,
The user terminal generates a digital content layer displaying the digital content received from the service server, and displays the security information of the security layer on the display device of the user terminal so that the digital information of the digital content layer is superimposed. Display the digital content layer and the security layer in overlap form,
The user terminal comprises:
Detecting a location of a security element included in the digital content, and designating a location of the security information on the security layer such that the security information is superimposed on an area corresponding to the location of the detected security element. system.
The method of claim 19, wherein the service server,
Request the user terminal to receive information of the user terminal from the user terminal, generate the security information including the received information of the user terminal, and apply a predetermined transparency to the generated security information; System.
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