WO2019201076A1

WO2019201076A1 - Method, apparatus, and system for adding watermark to secret file, and medium

Info

Publication number: WO2019201076A1
Application number: PCT/CN2019/080491
Authority: WO
Inventors: 何华荣; 张双峻; 王志
Original assignee: 深圳市联软科技股份有限公司
Priority date: 2018-04-16
Filing date: 2019-03-29
Publication date: 2019-10-24
Also published as: CN108563930A; CN108563930B

Abstract

A method, apparatus, and system for adding a watermark to a secret file, and a medium, relating to the field of watermark addition. The method comprises the following steps: obtaining content information on a display screen of a terminal, the content information comprising a document and a webpage (S101); determining whether the document and the webpage comprise secret information (S102); and if yes, adding watermarks to secret areas of the document and the webpage (S103), the watermarks being generated by a watermark generation server. The method, apparatus, and system for adding a watermark to a secret file, and the medium can effectively identify whether a document and a webpage on a display screen are secret, and then targetedly add watermarks to secret areas, so as to not only ensure the security of secret information and implement anti-counterfeiting tracing and copyright protection, but also enable a user to comfortably read content outside secret areas, thereby improving user experience.

Description

Method, device, medium and system for adding watermark of confidential document

Technical field

The invention relates to the field of watermark addition, in particular to a method, device, medium and system for adding a watermark to a confidential file.

Background technique

With the development and advancement of information technology, in order to protect the property rights of digital media files, digital watermark technology emerged as the times require and has developed rapidly. Under the prior art, the digital watermarking technology is a technology for directly embedding watermark information into a text carrier, and this technology does not affect the use value of the original carrier. However, the prior art is a method of printing a watermark in advance and then providing the user with a watermark, and many of the information is not classified and also printed with a watermark, resulting in a poor browsing experience for the user. . In addition, it is not possible to select whether to encrypt or not whether the information displayed on the display screen with the user is confidential information, and the blindness is large.

Summary of the invention

A method, device, medium and system for adding a watermark to a confidential file according to the defects in the prior art, can effectively identify whether a document and a webpage on a display screen are classified, and add a secret area. Watermark.

In order to achieve the above object, in a first aspect, a method for adding a watermark to a confidential file provided by the present invention includes the following steps:

Obtaining content information on a display screen of the terminal, the document and the webpage including the document and the webpage;

Determining whether the document and the webpage include confidential information;

If the document and web page include confidential information, the watermark is added to the document and the secret area of the web page, the watermark being generated by the watermark production server.

As a preferred implementation manner of the present invention, determining whether the document and the webpage include the confidential information includes:

Detect keywords in documents and web pages;

If a keyword representing confidential information appears, the document and web page include confidential information.

The document and the webpage are documents, and the file type of the document is identified;

If the document is an encrypted file, the document includes confidential information.

The document and the webpage are webpages, and the type of the webpage is recognized;

If the web page is of an encrypted type, the document and the web page include confidential information.

As a preferred embodiment of the present invention, adding a watermark to a confidential area of a document and a webpage includes:

Add a watermark to the document and the confidential area of the original web page.

Add a watermark to the document and the confidential area of the web page on the display screen.

As a preferred embodiment of the present invention, the confidential information includes an image, a text, and/or a number.

In a second aspect, the apparatus for adding a watermark to a confidential file according to the present invention includes a processor, an input device, an output device, and a memory, wherein the processor, the input device, the output device, and the memory are connected to each other, wherein the memory is used for A computer program is stored, the computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of the first aspect described above.

In a third aspect, a computer readable storage medium storing a computer program, the computer program comprising program instructions, the program instructions, when executed by a processor, causing the processor to perform The method of the first aspect.

a fourth aspect, a system for adding a watermark to a confidential file, comprising: a device for adding a watermark to a confidential file, a watermark generating server, and a terminal; and the device for adding a watermark to the watermark generating server and the terminal respectively communicates with the watermark generating server and the terminal, The device for adding a watermark to a confidential document performs the method as described in the first aspect above.

The invention has the beneficial effects that the method, the device, the medium and the system for adding a watermark of the confidential document provided by the invention can effectively identify whether the document and the webpage on the display screen are classified, and then add the targeted to the confidential area. Watermark. It not only ensures confidential information security, realizes anti-counterfeiting traceability, protects copyright, but also allows users to read content outside the confidential area more comfortably and enhance user experience.

DRAWINGS

1 is a flowchart of a method for adding a watermark to a confidential file according to a first embodiment of the present invention;

2 is a block diagram of an apparatus for adding watermarks to seven classified documents according to a third embodiment of the present invention;

3 is a block diagram of a system for adding watermarks to nine classified documents according to a fifth embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below, and it should be noted that the embodiments described herein are for illustrative purposes only and are not intended to limit the invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention In other instances, well-known circuits, software or methods have not been described in detail in order to avoid obscuring the invention.

References throughout the specification to "one embodiment", "an embodiment", "an" or "an" or "an" In at least one embodiment. The appearances of the phrase "in one embodiment", "in the embodiment", "the" Furthermore, the particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and/or sub-combination. In addition, those skilled in the art should understand that the drawings are provided for the purpose of illustration, and the drawings are not necessarily drawn to scale.

As shown in FIG. 1 , a method for adding a watermark to a confidential file according to a first embodiment of the present invention, the method for adding a watermark to a confidential file includes the following steps:

S101. Acquire content information on a display screen of the terminal, where the document and the webpage include a document and a webpage;

In this embodiment, the terminal includes, but is not limited to, a mobile phone, a computer, and other mobile or fixed terminals. As long as the terminal has a function that the display screen can provide information display for the user, the terminal can be one or some embodiments of the solution. The display screen can optionally use LCD (liquid crystal display) technology, LPD (light emitting polymer display) technology or LED (light emitting diode) technology, or any other technology that can realize information display. In addition, the retrieval of documents and web pages can be performed by using a web brother tool, a crawler tool, and other tools or means to implement the function.

S102. Determine whether the confidential information is included in the document and the webpage.

In this embodiment, after the document and the webpage are successfully obtained, the document and the webpage may be verified to determine whether the document and the webpage include the confidential information. The invention can use the message hook set by SetWindowsHookEx. When the size and position of the form displayed on the terminal screen window changes, the message hook receives the form change notification; after receiving the form change notification, the form is displayed. Sorting, calculating the size and coordinate range of each form displayed on the terminal screen window from the top to the bottom, thereby obtaining the document and the confidential display area of the webpage on the terminal screen window. Further, the document includes a world document, a txt document, and a ppt document, and the web page may be a web page on a browser of a terminal or a third party software. In the above manner, the effective screening of the information on the display screen can be realized, and the watermark can be added more specifically in the later stage.

S103. If the document and the webpage include the confidential information, add the watermark to the confidential area of the document and the webpage, and the watermark is generated by the watermark production server.

In this embodiment, the confidential information may be an image, a character, a number, a character, and the like in a document and a webpage, as long as it is classified or unsuitable for display on a display screen and the information for the user is classified. The addition of watermarks in the area not only ensures confidential information security, realizes anti-counterfeiting traceability, protects copyright, but also allows users to read content outside the confidential area more comfortably and enhance user experience. In addition, the watermark is generated by a special watermark production server, including but not limited to a server or a server cluster. The specific watermark generation manner can be implemented according to the prior art, because it is not the present invention. The present invention will not be discussed in detail herein. The solution only needs to directly call the generated watermark from the watermark generation server and add it to the content information.

The method for adding a watermark to a confidential file according to the second embodiment of the present invention is different from the first embodiment of the present invention in that:

Determining whether the document and the webpage include confidential information, and detecting the keywords in the document and the webpage includes: if a keyword representing the confidential information appears, the document and the webpage include the confidential information. Specifically, if a keyword representing the confidential information appears in the document and the webpage, the document and the webpage are determined to include the confidential information, and the step of adding the watermark is performed; if the keyword representing the confidential information does not appear in the document and the webpage, The documents and web pages do not include confidential information, and the documents and web pages are directly displayed on the display screen of the terminal.

It should be noted that the remaining steps and the beneficial effects that are not mentioned in this embodiment are substantially similar to those in the foregoing embodiments of the present invention, and the method for detecting keywords is provided in this embodiment. The detection of the classified information is highly accurate, and the watermark is added to the confidential area in a targeted manner. It not only ensures confidential information security, realizes anti-counterfeiting traceability, protects copyright, but also allows users to read content outside the confidential area more comfortably and enhance user experience.

A method for adding a watermark to a confidential document according to a third embodiment of the present invention is different from the foregoing embodiment of the present invention in that:

Determining whether the document and the webpage include the confidential information includes: the document and the webpage are documents, and the file type of the document is recognized; if the document is an encrypted file, the document includes the confidential information. Specifically, if the document and the webpage are encrypted files, the document and the webpage include confidential information; if the document and the webpage are non-encrypted files, the document and the webpage do not include the confidential information. For example, if the file type of the document and the webpage is a world file, and the world file is confidential, the step of adding a watermark is performed; if the file type of the document and the webpage is a txt file, since the txt file is not encrypted, The document and web page are directly displayed on the display screen of the terminal.

It should be noted that the remaining steps and the beneficial effects that are not mentioned in this embodiment are substantially similar to those in the foregoing embodiments of the present invention, and are not described herein again. The manner of identifying the type of the document provided in this embodiment is completed. The detection of the classified information is high in accuracy and fast in response, and the watermark is added to the dense area in a targeted manner. It not only ensures confidential information security, realizes anti-counterfeiting traceability, protects copyright, but also allows users to read content outside the confidential area more comfortably and enhance user experience.

A method for adding a watermark to a confidential document according to a fourth embodiment of the present invention is different from the foregoing embodiment of the present invention in that:

Determining whether the document and the webpage include the confidential information comprises: the document and the webpage being a webpage, identifying a type of the webpage; if the webpage is an encrypted type, the document and the webpage include the confidential information. Specifically, the IP address of the webpage and the content of the webpage may be detected to determine whether the webpage is encrypted. For example, the IP address of all the encrypted webpages may be collected to form an encrypted IP library, and then the IP address of the webpage displayed on the terminal may be collected. Searching in the IP library; if the IP of the webpage displayed on the terminal is in the IP inventory, the webpage is encrypted, and then the step of adding a watermark is performed in the entire webpage; if the IP of the webpage displayed on the terminal is in the IP library If it does not exist, the webpage is non-encrypted, and the document and the webpage are directly displayed on the display screen of the terminal.

It should be noted that the remaining steps and the beneficial effects that are not mentioned in this embodiment are substantially similar to those in the foregoing embodiments of the present invention, and are not described here. The method for identifying the type of the webpage provided in this embodiment is completed. The detection of the classified information is high in accuracy and fast in response, and the watermark is added to the dense area in a targeted manner. It not only ensures confidential information security, realizes anti-counterfeiting traceability, protects copyright, but also allows users to read content outside the confidential area more comfortably and enhance user experience.

The method for adding a watermark to a confidential document according to the fifth embodiment of the present invention is different from the foregoing embodiment of the present invention in that:

Adding a watermark to a confidential area of a document and web page includes adding a watermark to the document and the confidential area of the original web page. Specifically, after determining the confidential area of the document and the webpage, the watermark may be added in the confidential area of the original file, including but not limited to the digital watermark and the vector diagram, and the digital watermark has the advantages that the generation manner is simple, The shortcut can be embedded in the confidential area of the corresponding information in a short time, reducing the waiting time of the user and improving the efficiency of adding the watermark. The watermark information can also be a vector implementation as another embodiment. The advantage of the vector diagram compared to the bitmap is that the user enlarges the corresponding information to be read many times after the user's screen. The information is also not distorted and will not appear as multiple pixels.

It should be noted that the remaining steps and the beneficial effects that are not mentioned in this embodiment are substantially similar to those in the foregoing embodiments of the present invention, and are not described herein again. In this embodiment, the watermark is added to the confidential area in a targeted manner. It not only ensures confidential information security, realizes anti-counterfeiting traceability, protects copyright, but also allows users to read content outside the confidential area more comfortably and enhance user experience.

A method for adding a watermark to a confidential document according to a sixth embodiment of the present invention is different from the foregoing embodiment of the present invention in that:

Adding a watermark to a cryptographic region of a document and web page includes adding a watermark to the document and the cryptographic region of the web page on the display screen. Specifically, after determining the confidential area of the document and the webpage, the watermark may be added to the corresponding location on the screen in the confidential area of the original file; it is necessary to pay special attention to that the method is not directly added to the original file of the document and the webpage. Watermarking, just forming a watermark on the screen to mask information about the dense area, has the advantage of not destroying the original file.

As shown in FIG. 2, the apparatus for adding a watermark to a confidential file according to a seventh embodiment of the present invention, the device for adding a watermark to a confidential file includes an input device 41, a processor 42, a memory 43, and an output device 44, and the processing The device 42, the input device 41, the output device 44 and the memory 43 are interconnected by a communication bus 40 for storing a computer program, the computer program comprising program instructions, the processor 42 being configured to invoke the Program instructions; further, the processor 42 is configured to invoke the program instructions to perform the method of adding a watermark to the confidential file.

It should be understood that in the embodiments of the present invention, the so-called memory 43 may include read only memory and random access memory, and provide instructions and data to the processor 42. A portion of the memory 43 may also include a non-volatile random access memory. For example, the memory 43 can also store related information of the device type.

The processor 42 is operative to execute or execute an operating system, various software programs, and its own set of instructions stored in the internal memory 43, and to process data received from the touch input device or from other external input paths and Instructions to implement various functions. Processor 42 may include, but is not limited to, a central processing unit (CPU), a general purpose image processor (GPU), a microprocessor (MCU), a digital signal processor (DSP), a field programmable logic gate array (FPGA), application specific One or more of an integrated circuit (ASIC). In some embodiments, processor 42 and memory controller 104 can be implemented on a single chip. In some other implementations, they can be implemented on separate chips from each other.

The input device 41 may be a camera (CAMERA or WEBCAM), etc., and the camera is also called a computer camera, a computer eye, an electronic eye, etc., and is a video driving device, and a touch input device such as a numeric keyboard or a mechanical keyboard; the output device 44 may include a display or the like.

In a specific implementation, the processor 42 and the input device 41 and the output device 44 described in the embodiments of the present invention may implement the implementation manner described in the embodiment of the method for adding a watermark to a confidential file provided by an embodiment of the present invention. No longer.

The device for adding a watermark to a confidential file provided by the present invention is only for adding a watermark in a confidential area, which not only ensures the security of the confidential information, realizes the anti-counterfeiting source, protects the copyright, but also allows the user to read the confidential area more comfortably. The content other than the content enhances the user's experience and enhances the practicability of the present invention.

A computer readable storage medium according to an eighth embodiment of the present invention, the computer readable storage medium storing a computer program, the computer program comprising program instructions that, when executed by a processor, cause the processor to execute A method of adding a watermark to the classified file.

Specifically, the computer readable storage medium may include a cache, a high speed random access memory (RAM), such as a common double data rate synchronous dynamic random access memory (DDR SDRAM), and may also include non-easy Loss of memory (NVRAM), such as one or more read only memory (ROM), disk storage devices, flash memory devices, or other non-volatile solid state memory devices such as compact discs (CD-ROM, DVD-ROM) , floppy disk or data tape, etc.

The computer readable storage medium provided by the invention, when executed by the processor, implements only the watermark in the dense area, which not only ensures the security of the confidential information, realizes the anti-counterfeiting source, protects the copyright, but also allows the user to It is more comfortable to read content outside the confidential area, enhance the user's experience, and enhance the practicability of the present invention.

As shown in FIG. 3, a system for adding a watermark to a confidential file according to a ninth embodiment of the present invention, the system for adding a watermark to a confidential file includes a device for adding a watermark to a confidential file, and a client; adding a watermark to the confidential file The device is respectively connected to the watermark generating server and the client, and the device for adding the watermark to the secret file performs a method of adding a watermark to the confidential file.

The watermarking system for confidential documents provided by the present invention is only for adding a watermark in a confidential area, which not only ensures the security of confidential information, realizes anti-counterfeiting traceability, protects copyright, but also enables users to read confidential areas more comfortably. The content other than the content enhances the user's experience and enhances the practicability of the present invention.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. The scope is intended to be included within the scope of the claims and the description of the invention.

Claims

A method for adding a watermark to a confidential file, comprising the steps of:

Obtaining content information on a display screen of the terminal, the document and the webpage including the document and the webpage;

Determining whether the document and the webpage include confidential information;

If the document and web page include confidential information, the watermark is added to the document and the secret area of the web page, the watermark being generated by the watermark production server.
The method for adding a watermark to a confidential file according to claim 1, wherein determining whether the document and the webpage include the confidential information comprises:

Detect keywords in documents and web pages;

If a keyword representing confidential information appears, the document and web page include confidential information.
The method for adding a watermark to a confidential file according to claim 2, wherein determining whether the document and the webpage include the confidential information comprises:

The document and the webpage are documents, and the file type of the document is identified;

If the document is an encrypted file, the document includes confidential information.
The method for adding a watermark to a confidential file according to claim 2, wherein determining whether the document and the webpage include the confidential information comprises:

The document and the webpage are webpages, and the type of the webpage is recognized;

If the web page is of an encrypted type, the document and the web page include confidential information.
The method for adding a watermark to a confidential file according to claim 1, wherein the adding the watermark to the confidential area of the document and the webpage comprises:

Add a watermark to the document and the confidential area of the original web page.
The method for adding a watermark to a confidential file according to any one of claims 1 to 5, wherein the adding the watermark to the confidential area of the document and the webpage comprises:

Add a watermark to the document and the confidential area of the web page on the display screen.
The method for adding a watermark to a confidential document according to claim 1, wherein the confidential information comprises an image, a text, and/or a number.
An apparatus for adding a watermark to a confidential file, comprising: a processor, an input device, an output device, and a memory, wherein the processor, the input device, the output device, and the memory are connected to each other, wherein the memory is used to store the computer A program, the computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of any of claims 1-7.
A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, the computer program comprising program instructions that, when executed by a processor, cause the processor to execute as claimed The method of any of 1-7 is claimed.
A system for adding a watermark to a confidential file, comprising: a device for adding a watermark to a confidential file, a watermark generation server, and a terminal; and the device for adding a watermark to the watermark generation server is respectively connected to the watermark generation server and the terminal, wherein A device for adding a watermark to a confidential document performs the method of any of claims 1-7.