CN110874456B - Watermark embedding method, watermark extracting method, watermark embedding device, watermark extracting device and data processing method - Google Patents

Abstract

The application discloses a watermark embedding method, which comprises the following steps: acquiring watermark information to be embedded into a carrier object; determining at least one carrier sub-object in which watermark information is to be embedded in the carrier object; embedding the watermark information into the carrier sub-object. By adopting the method, the problem that the watermark can not resist interception attack in the prior art is solved.

Description

Watermark embedding and watermark extraction method, device and data processing method

technical field

The present application relates to digital watermark embedding technology, in particular to a watermark embedding method, device, electronic device and storage device. The invention also relates to a watermark extraction method, device, electronic device and storage device. The invention also relates to a data processing method.

Background technique

Today is the information age, and office informatization is becoming more and more common.

For example, Office, as an office software suite developed by Microsoft Corporation, has almost become a universal office software processing solution. The Office series software is easy to use, easy to use and easy to use. It has a very large user group, and the number of Office documents generated every day is countless. The Office suite is mainly composed of Word, PowerPoint, and Excel. The document data within the enterprise may contain highly valuable information. The copyright protection and traceability of these important information become very meaningful. Digital watermarking technology is an effective technology to realize file copyright protection. By embedding meaningful watermark information in Office documents, the copyright protection of documents can be achieved to prevent illegal misappropriation.

In the prior art, there are some solutions for embedding watermarks in documents, but most of them cannot resist interception attacks, that is, if part of the document is intercepted, the watermark information cannot be extracted, and the security of the watermark cannot be guaranteed.

Therefore, in order to ensure the security of the watermark, it is necessary to improve the anti-intercept attack capability of the watermark.

SUMMARY OF THE INVENTION

The present application provides a watermark embedding method, device, electronic device and storage device to solve the problem that the existing watermark cannot resist interception attacks.

The present application provides a watermark embedding method, including:

Obtain the watermark information that needs to be embedded in the carrier object;

determining at least one carrier sub-object to be embedded with watermark information in the carrier object;

Embed the watermark information into the carrier sub-object.

Optionally, the embedding of the watermark information into the carrier object includes:

Embed the watermark information into the carrier sub-object by invoking the COM interface; and/or

The watermark information is embedded in the carrier sub-object in a manner of modifying the content recorded in the carrier object.

Optionally, the method of invoking the COM interface to embed the watermark information into the carrier sub-object includes:

Create a new text box in the display area of the carrier object through the COM interface, and use the text box as a carrier sub-object;

inserting the watermark information into the text box;

The text box in which the watermark information is inserted is hidden.

Optionally, create a new text box in the display area of the display area in the carrier object through the COM interface, and use the text box as a carrier sub-object, including:

Create a new text box at the edge of the display area in the carrier object through the COM interface;

Set the size of the newly created text box to the smallest, and use the resulting text box as a carrier sub-object.

Optionally, embedding the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes:

Use a decompression program to decompress the carrier object to obtain a decompressed file;

Obtain the file corresponding to the carrier sub-object from the decompressed file, and embed the watermark information in the file corresponding to the carrier sub-object;

The method also includes:

The decompressed file with embedded watermark information is compressed to obtain a carrier object with embedded watermark information.

Optionally, embedding the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes:

Embedding the watermark information into the carrier object as text attribute information; or,

The synonyms in the carrier object are replaced according to the watermark information.

Optionally, the text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

Optionally, the carrier object is a table;

The embedding of the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes: taking a specific attribute of a cell as an embedded object, and embedding the watermark information into the cell in the table in the attribute information.

Optionally, it also includes: converting the watermark information into second watermark information by scrambling a password;

The embedding of the watermark information into the carrier sub-object includes: embedding the second watermark information into the carrier sub-object.

The application also provides a watermark extraction method, comprising:

Obtain the carrier object of the watermark information to be extracted;

determining at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information is extracted from the carrier sub-object.

Optionally, when the watermark information is embedded into the carrier sub-object by calling a COM interface, the extracting the watermark information from the carrier sub-object includes:

Extract the watermark information from the hidden text box.

Optionally, the extracting watermark information from the carrier sub-object includes:

Use the decompression program to decompress the carrier object of the watermark information to be extracted to obtain the decompressed file;

The file corresponding to the carrier sub-object in which the watermark information is embedded is found from the decompressed file, and the watermark information is extracted from the file corresponding to the carrier sub-object.

Optionally, the extracting watermark information from the carrier sub-object includes:

Extract the watermark information from the text attribute of the carrier sub-object; or,

The watermark information is extracted from the synonyms.

Optionally, the text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

Optionally, the carrier sub-object is a table;

The extracting the watermark information from the carrier sub-object includes: extracting the watermark information from the attribute of the cell.

Optionally, the extracting the watermark information from the carrier sub-object includes: extracting first watermark information from the carrier sub-object; and converting the first watermark information into watermark information by using a scrambled password.

The present application also provides a watermark embedding device, comprising:

a watermark information obtaining unit, used to obtain the watermark information that needs to be embedded in the carrier object;

a carrier sub-object determining unit, configured to determine at least one carrier sub-object to be embedded with watermark information in the carrier object;

A watermark information embedding unit, used for embedding the watermark information into the carrier sub-object.

The application also provides an electronic device, comprising:

processor; and

The memory is used to store the program of the watermark embedding method. After the device is powered on and the program of the watermark embedding method is run through the processor, the following steps are performed:

Obtain the watermark information that needs to be embedded in the carrier object;

determining at least one carrier sub-object to be embedded with watermark information in the carrier object;

Embed the watermark information into the carrier sub-object.

The present application also provides a storage device that stores a program of the watermark embedding method, and the program is executed by the processor to perform the following steps:

Obtain the watermark information that needs to be embedded in the carrier object;

determining at least one carrier sub-object to be embedded with watermark information in the carrier object;

Embed the watermark information into the carrier sub-object.

The application also provides a watermark extraction device, comprising:

a carrier object obtaining unit, used for obtaining the carrier object of the watermark information to be extracted;

a carrier sub-object determining unit, configured to determine at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information extraction unit is used for extracting the watermark information from the carrier sub-object.

The application also provides an electronic device, comprising:

processor; and

The memory is used to store the program of the watermark extraction method. After the device is powered on and runs the program of the watermark embedding method through the processor, the following steps are performed:

Obtain the carrier object of the watermark information to be extracted;

determining at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information is extracted from the carrier sub-object.

The present application also provides a storage device that stores a program of the watermark extraction method, and the program is run by a processor and performs the following steps:

Obtain the carrier object of the watermark information to be extracted;

determining at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information is extracted from the carrier sub-object.

The application also provides a data processing method, comprising:

obtaining a carrier object, wherein the carrier object includes a data object to be embedded with watermark information;

obtaining watermark information, wherein the watermark information includes an identifier to be embedded in the carrier object;

determining at least one carrier sub-object in the carrier object, wherein the carrier sub-object includes components of the carrier object, and the components include character data, format data, multimedia data and/or widget data;

Embed the watermark information into the carrier sub-object.

Compared with the prior art, the present invention has the following advantages:

The present application provides a watermark embedding method, device, electronic device and storage device, which embed watermark information into a plurality of carrier sub-objects to be embedded with watermark information in a carrier object. In each carrier sub-object, the intercepted part of the document can retain the watermark information to a large extent, so the anti interception attack capability of the watermark can be improved.

Description of drawings

FIG. 1 is a flowchart of a watermark embedding method provided by the first embodiment of the present application.

FIG. 2 is a schematic diagram of creating a new text box at the edge of a display area in a word document through a COM interface provided by the first embodiment of the present application.

FIG. 3 is a schematic diagram of setting a newly created text box to the smallest size provided by the first embodiment of the present application.

FIG. 4 is a schematic diagram of inserting watermark information into a text box provided by the first embodiment of the present application.

FIG. 5 is a schematic diagram of hiding a text box provided by the first embodiment of the present application.

FIG. 6 is a schematic diagram of a text display effect before embedding watermark information provided by the first embodiment of the present application.

FIG. 7 is a schematic diagram of a text display effect after embedding watermark information provided by the first embodiment of the present application.

FIG. 8 is a schematic diagram of embedding watermark information into multiple sub-objects of a carrier object in various ways according to the first embodiment of the present application.

FIG. 9 is a flowchart of a watermark extraction method provided by the second embodiment of the present application.

FIG. 10 is a schematic diagram of a watermark embedding apparatus provided by the third embodiment of the present application.

FIG. 11 is a schematic diagram of an electronic device according to a fourth embodiment of the present application.

FIG. 12 is a schematic diagram of a watermark extraction apparatus provided by the sixth embodiment of the present application.

FIG. 13 is a schematic diagram of an electronic device according to a seventh embodiment of the present application.

FIG. 14 is a flowchart of a data processing method provided by the ninth embodiment of the present application.

Detailed ways

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar promotions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation disclosed below.

The first embodiment of the present application provides a watermark embedding method, which will be described below with reference to FIG. 1 .

As shown in FIG. 1, in step S101, the watermark information that needs to be embedded in the carrier object is obtained.

The carrier object refers to a data object that needs to be embedded with watermark information. The carrier object refers to a digital carrier, such as Microsoft Office documents, web page data, etc.; wherein, the Office documents include Word, PowerPoint, Excel, and the like. According to at least one embodiment of the present invention, the digital carrier includes various types of documents, and the methods provided in this application are not limited to specific document types/file types.

The watermark information refers to the identifier to be embedded in the carrier object. For example, the watermark information can be visible, reminding users to pay attention to confidentiality and rights; for another example, the watermark information can be hidden and embedded in the carrier object, which will not affect the use value of the original carrier object, and is not easy to be detected and modified again. But the watermark information can be identified and recognized by the producer. Through these watermark information hidden in the carrier, the purpose of confirming the content creator, purchaser, transmitting secret information or judging whether the carrier object has been tampered can be achieved. The watermark information can be the company name of a company, the employee number or other identification information of an employee.

As shown in FIG. 1, in step S102, at least one carrier sub-object to be embedded with watermark information in the carrier object is determined.

The carrier sub-object refers to a component of the carrier object. The types of carrier sub-objects include: character data, format data such as text boxes and tables, multimedia data such as pictures, audios, and videos, and control data such as buttons and menus. For example, in a word document, the carrier sub-objects include: pictures, character data, text boxes, etc. in the word document.

In order to make the carrier object resistant to interception attacks, multiple carrier sub-objects to be embedded with watermark information in the carrier object can be determined. For example, if the carrier object is a word document, multiple pictures, character data, and text boxes in the word document can be selected as the carrier sub-objects. object.

As shown in FIG. 1, in step S103, the watermark information is embedded into the carrier sub-object.

The embedding of the watermark information into the carrier object includes:

Embed the watermark information into the carrier sub-object by invoking the COM interface; and/or

The watermark information is embedded in the carrier sub-object in a manner of modifying the content recorded in the carrier object.

The method of invoking the COM interface to embed the watermark information into the carrier sub-object includes:

Create a new text box in the display area of the carrier object through the COM interface, and use the text box as a carrier sub-object;

inserting the watermark information into the text box;

The text box in which the watermark information is inserted is hidden.

Said creating a new text box in the display area of the display area in the carrier object through the COM interface, and using the text box as a carrier sub-object, including:

Create a new text box at the edge of the display area in the carrier object through the COM interface;

Set the size of the newly created text box to the smallest, and use the resulting text box as a carrier sub-object.

For example, if the carrier object is a word document, create a new text box in the upper left corner of the display area in the word document through the COM interface (as shown in Figure 2), and set it to the minimum value (as shown in Figure 3), and set the watermark information Insert into this text box (as shown in Figure 4), and then use the "Select->Hide" function to hide the text box (as shown in Figure 5).

The watermark information is embedded in the carrier sub-object by invoking the COM interface, and the carrier object can resist the attack of copy-all and partial deletion.

The embedding of the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes:

Use a decompression program to decompress the carrier object to obtain a decompressed file;

Obtain the file corresponding to the carrier sub-object from the decompressed file, and embed the watermark information in the file corresponding to the carrier sub-object;

The method also includes:

The decompressed file with embedded watermark information is compressed to obtain a carrier object with embedded watermark information.

The above method can be used when the type of the carrier sub-object is picture, audio or video.

For example, the carrier sub-object is a picture in an office file, and the watermark information is embedded in the carrier sub-object by modifying the content recorded in the carrier object. Office file, you need to convert it into a file above version 07), then find the image file corresponding to the picture in the office file, and then use the embedding method of digital image watermark to embed the watermark information into the image file. After the embedding is completed, compress the decompressed files to generate the Office file format (if it is an office file of version 03, you need to convert the file of version 07 back to version 03). This example is resistant to attacks on image copying.

The watermark embedding example for bearer sub-objects of type video and audio is similar to the watermark embedding example for bearer sub-objects of type picture. By adopting the above watermark embedding method in which the watermark information is embedded in the carrier sub-object by modifying the content recorded in the carrier object, the watermark extraction can be performed in the case of video and audio duplication. Embedding watermark information into a multimedia file (video, audio, etc.) can not only protect the copyright of the multimedia file itself, but also provide copyright protection for the document containing the multimedia file.

The embedding of the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes:

Embedding the watermark information into the carrier sub-object as text attribute information; or,

The synonyms in the carrier sub-object are replaced according to the watermark information.

The above method can be used when the type of the carrier sub-object is character data, text box or table.

Embedding the watermark information into the carrier sub-object as text attribute information refers to converting the watermark information into a text with a certain imperceptible attribute and embedding it into the carrier sub-object. The text attributes include: the font size of the text; the spacing of the text; the phonetic alignment of the text, etc. For example, if the text attribute is the font size of the text, and the 5 and 5.5 characters are not easily perceptible to the naked eye, the 5-size character can be represented as 0 for embedded information, and the 5.5-size character as 1 for embedded information. As shown in Figure 6, before embedding "This is a line of example text", each word has the same size, Figure 7 is a schematic diagram after embedding information "101010101", the 5.5-size word indicates that the embedded information is 1, and the 5-size word indicates The embedded information is 0. There are many such methods, so I won't repeat them one by one.

The synonyms in the carrier sub-object are replaced according to the watermark information, and this method can resist tortious means such as copying and pasting of the carrier object, and taking pictures.

The method of replacing the synonyms in the carrier sub-object according to the watermark information belongs to the content-based information embedding method, which can be encoded and decoded by using a contrasting synonym dictionary. For example, the synonym pair "morning-morning", where "morning" represents embedded information 0 and "morning" represents embedded information 1, by retrieving and replacing occurrences of "morning" and "morning" in the text, the watermark information is embedded into the carrier in child objects.

It can be seen that when the watermark information is embedded in the same type of carrier sub-object in the carrier object, different embedding methods can be adopted. For example, for character data carrier sub-objects, the watermark information can be embedded as text attribute information into all sub-objects The method of describing the carrier sub-object or the method of replacing the synonym in the carrier sub-object according to the watermark information is adopted.

When the carrier object is a table; the method of modifying the content recorded in the carrier object to embed the watermark information into the carrier sub-object includes: taking the attribute of the cell as the carrier sub-object, and embedding the watermark information in the carrier sub-object. In the attribute information of the cells in the table.

When the carrier object is a table (for example, an Excel table), in addition to embedding the watermark information as text attribute information into the table, some attributes of each cell can also be used as embedded objects, for example, the phonetic method. In general, cell phonetics are rarely used, and phonetics can provide three options: left-aligned, centered, and right-aligned. When embedding watermark information, left-aligned can be used as embedded information 0, and right-aligned as embedded information 1.

The method of embedding the watermark information into the attribute information of the cells in the table can resist the interception attack and partial deletion attack of the table.

Before embedding the watermark information into the carrier sub-object, the watermark information can be converted into the second watermark information by means of scrambled password; and then the second watermark information is embedded in the carrier sub-object.

For example, assuming that the watermark information to be embedded is "ABCD", first convert the string S to the hexadecimal ASCII code string S1, and "ABCD" becomes the string "41424344"; A new string S2 is obtained in random order. Suppose the random password is set to "123", and the order of the generated chaotic sequence is "76345218", then the new sequence S2 becomes "43424144". Then the information S2 to be embedded is the second watermark information, namely "43424144", and finally "123" is reserved as the key information and provided to the watermark extraction end.

There are two ways to provide the scrambled password to the watermark information extraction end: one way is: send the scrambled password to the watermark information extraction end in the form of a separate message; the other way is: use the watermark information The extraction end and the watermark information embedding end determine the scrambled password in a pre-agreed manner.

So far, the implementation of the watermark embedding method provided by the first embodiment of the present application has been described in detail. The present application can resist screenshot, copy and partial deletion attacks by embedding watermark information into multiple sub-objects of the carrier object in various ways (as shown in FIG. 8 ), thereby solving the security problem of the watermark embedded in the carrier object.

Corresponding to the watermark embedding method provided by the first embodiment of the present application, the second embodiment of the present application provides a watermark extraction method, which is described below with reference to FIG. 9 .

As shown in FIG. 9 , in step S901, a carrier object whose watermark information is to be extracted is obtained.

The carrier object of the watermark information to be extracted refers to the data object in which the watermark information is embedded by the watermark embedding method provided in the first embodiment of the present application. The carrier object includes: Microsoft product Office documents, web page data, etc.; wherein, the Office documents include Word, PowerPoint, Excel, and the like. The carrier object of the watermark information to be extracted can be the complete carrier object embedded with the watermark, or a part of the carrier object embedded with the watermark (obtained after the carrier object is intercepted). For example, the complete carrier object embedded with the watermark is word. For document 1, word document 2 is generated by copying part of the content of word document 1, then document 2 can be a carrier object of the watermark information to be extracted, which is a part of the carrier object in which the watermark is embedded.

As shown in FIG. 9, in step S902, at least one carrier sub-object in which watermark information is embedded in the carrier object is determined.

The carrier sub-object refers to a component of the carrier object. The types of carrier sub-objects include: character data, format data such as text boxes and tables, multimedia data such as pictures, audios, and videos, and control data such as buttons and menus. For example, in a word document, the carrier sub-objects include: pictures, character data, text boxes, etc. in the word document.

As shown in FIG. 9, in step S903, watermark information is extracted from the carrier sub-object.

When the watermark information is embedded in the carrier sub-object by calling the COM interface, the extracting the watermark information from the carrier sub-object includes:

Extract the watermark information from the hidden text box.

The extracting watermark information from the carrier sub-object includes:

Use the decompression program to decompress the carrier object of the watermark information to be extracted to obtain the decompressed file;

The file corresponding to the carrier sub-object in which the watermark information is embedded is found from the decompressed file, and the watermark information is extracted from the file corresponding to the carrier sub-object.

The above method can be used when the type of the carrier sub-object is picture, audio or video.

The extracting watermark information from the carrier sub-object includes:

Extract the watermark information from the text attribute of the carrier sub-object; or,

The watermark information is extracted from the synonyms.

The text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

For example, if the text attribute is the font size of the text, the 5 and 5.5 characters are not easily perceptible to the naked eye, the 5-size character represents the embedded information as 0, and the 5.5-size character represents the embedded information as 1; when extracting, the 5-size character represents The extracted information is 0, and the word 5.5 indicates that the extracted information is 1.

For example, the synonym pair "morning-morning", where "morning" represents embedded information 0, "morning" represents embedded information 1, if the extracted synonym is "morning", it means the extracted information is "0", and the extracted The synonym of is "morning", which means the extracted information is "1".

When the carrier sub-object is a table; the extracting the watermark information from the carrier sub-object includes: extracting the watermark information from the attribute of the cell.

The extracting watermark information from the carrier sub-object includes: extracting first watermark information from the carrier sub-object; and converting the first watermark information into watermark information by using a scrambled password.

Following the example of the first embodiment of the present application, the first watermark information "43424144" is extracted from the carrier sub-object, the scrambled password "123" is used, and the order of generating the chaotic sequence is "76345218", and the first watermark information is passed through the chaotic sequence. The sequence is shuffled to get the string "41424344", which is finally converted into the watermark information "ABCD".

Corresponding to the watermark embedding method provided above, the third embodiment of the present application further provides a watermark embedding apparatus.

As shown in Figure 10, the watermark embedding device includes:

A watermark information obtaining unit 1001, used to obtain the watermark information that needs to be embedded in the carrier object;

a carrier sub-object determining unit 1002, configured to determine at least one carrier sub-object to be embedded with watermark information in the carrier object;

A watermark information embedding unit 1003, configured to embed the watermark information into the carrier sub-object.

Optionally, the watermark information embedding unit includes:

The COM interface embedding sub-unit is used to embed the watermark information into the carrier sub-object by invoking the COM interface; and/or

The modified content embedding subunit is used to embed the watermark information into the carrier sub-object in a manner of modifying the content recorded in the carrier object.

Optionally, the COM interface is embedded in a subunit, including:

A new subunit of the text box is used to create a new text box in the display area in the carrier object through the COM interface, and the text box is used as the carrier sub-object;

inserting a watermark information subunit for inserting the watermark information into the text box;

The text box hiding subunit is used to hide the text box into which the watermark information is inserted.

Optionally, the text box creates a new subunit, which is specifically used for:

Create a new text box at the edge of the display area in the carrier object through the COM interface;

Set the size of the newly created text box to the smallest, and use the resulting text box as a carrier sub-object.

Optionally, the modified content is embedded in a subunit, and is specifically used for:

Use a decompression program to decompress the carrier object to obtain a decompressed file;

Obtain the file corresponding to the carrier sub-object from the decompressed file, and embed the watermark information in the file corresponding to the carrier sub-object;

The device also includes:

The file compressing unit is used for compressing the decompressed file with embedded watermark information to obtain a carrier object with embedded watermark information.

Optionally, the modified content is embedded in a subunit, and is specifically used for:

Embedding the watermark information into the carrier sub-object as text attribute information; or,

The synonyms in the carrier sub-object are replaced according to the watermark information.

Optionally, the text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

Optionally, the carrier object is a table;

The method of modifying the content recorded in the carrier object to embed the watermark information into the carrier sub-object includes: using the attribute of the cell as the carrier sub-object, and embedding the watermark information into the cell in the table in the attribute information.

Optionally, the apparatus further includes: a second watermark information conversion unit, configured to convert the watermark information into the second watermark information by means of a scrambled password;

The watermark information embedding unit is specifically configured to: embed the second watermark information into the carrier sub-object.

It should be noted that, for the detailed description of the watermark embedding apparatus provided by the third embodiment of the present application, reference may be made to the relevant description of the first embodiment of the present application, and details are not repeated here.

Corresponding to the watermark embedding method provided above, the fourth embodiment of the present application further provides an electronic device.

As shown in Figure 11, the electronic equipment includes:

processor 1101; and

The memory 1102 is used to store the program of the watermark embedding method. After the device is powered on and runs the program of the watermark embedding method through the processor, the following steps are performed:

Obtain the watermark information that needs to be embedded in the carrier object;

determining at least one carrier sub-object to be embedded with watermark information in the carrier object;

Embed the watermark information into the carrier sub-object.

Optionally, the embedding of the watermark information into the carrier object includes:

Embed the watermark information into the carrier sub-object by invoking the COM interface; and/or

The watermark information is embedded in the carrier sub-object in a manner of modifying the content recorded in the carrier object.

Optionally, the method of invoking the COM interface to embed the watermark information into the carrier sub-object includes:

Create a new text box in the display area of the carrier object through the COM interface, and use the text box as a carrier sub-object;

inserting the watermark information into the text box;

The text box in which the watermark information is inserted is hidden.

Optionally, create a new text box in the display area of the display area in the carrier object through the COM interface, and use the text box as a carrier sub-object, including:

Create a new text box at the edge of the display area in the carrier object through the COM interface;

Set the size of the newly created text box to the smallest, and use the resulting text box as a carrier sub-object.

Optionally, embedding the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes:

Use a decompression program to decompress the carrier object to obtain the decompressed file;

Obtain the file corresponding to the carrier sub-object from the decompressed file, and embed the watermark information in the file corresponding to the carrier sub-object;

The electronic device also performs the following steps:

The decompressed file with embedded watermark information is compressed to obtain a carrier object with embedded watermark information.

Optionally, embedding the watermark information into the carrier sub-object by modifying the content recorded in the carrier object includes:

Embedding the watermark information into the carrier sub-object as text attribute information; or,

The synonyms in the carrier sub-object are replaced according to the watermark information.

Optionally, the text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

Optionally, the carrier object is a table;

The method of modifying the content recorded in the carrier object to embed the watermark information into the carrier sub-object includes: using the attribute of the cell as the carrier sub-object, and embedding the watermark information into the cell in the table in the attribute information.

Optionally, the electronic device also performs the following steps: converting the watermark information into the second watermark information by scrambling a password;

The embedding of the watermark information into the carrier sub-object includes: embedding the second watermark information into the carrier sub-object.

It should be noted that, for the detailed description of the electronic device provided by the fourth embodiment of the present application, reference may be made to the relevant description of the first embodiment of the present application, and details are not repeated here.

Corresponding to the watermark embedding method provided above, the fifth embodiment of the present application further provides a storage device,

A program that stores a watermark embedding method, the program is executed by a processor, and performs the following steps:

Obtain the watermark information that needs to be embedded in the carrier object;

determining at least one carrier sub-object to be embedded with watermark information in the carrier object;

Embed the watermark information into the carrier sub-object.

It should be noted that, for a detailed description of the storage device provided by the fifth embodiment of the present application, reference may be made to the relevant description of the first embodiment of the present application, and details are not repeated here.

Corresponding to the watermark extraction method provided above, the sixth embodiment of the present application further provides a watermark extraction apparatus.

As shown in Figure 12, the watermark extraction device includes:

A carrier object obtaining unit 1201, configured to obtain a carrier object whose watermark information is to be extracted;

a carrier sub-object determining unit 1202, configured to determine at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information extraction unit 1203 is configured to extract the watermark information from the carrier sub-object.

Optionally, the watermark information extraction unit is specifically used for:

When the watermark information is embedded in the carrier sub-object by invoking the COM interface, the watermark information is extracted from the hidden text box.

Optionally, the watermark information extraction unit is specifically used for:

Use the decompression program to decompress the carrier object of the watermark information to be extracted to obtain the decompressed file;

The file corresponding to the carrier sub-object in which the watermark information is embedded is found from the decompressed file, and the watermark information is extracted from the file corresponding to the carrier sub-object.

Optionally, the watermark information extraction unit is specifically used for:

Extract the watermark information from the text attribute of the carrier sub-object; or,

The watermark information is extracted from the synonyms.

Optionally, the text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

Optionally, the carrier sub-object is a table;

The watermark information extraction unit is specifically used for: extracting the watermark information from the attributes of the cells.

Optionally, the watermark information extraction unit is specifically configured to: extract the first watermark information from the carrier sub-object; and convert the first watermark information into watermark information by using a scrambled password.

It should be noted that, for the detailed description of the watermark extraction apparatus provided by the sixth embodiment of the present application, reference may be made to the relevant description of the second embodiment of the present application, and details are not repeated here.

Corresponding to the watermark extraction method provided above, the seventh embodiment of the present application further provides an electronic device.

As shown in Figure 13, the electronic equipment includes:

processor 1301; and

The memory 1302 is used to store the program of the watermark extraction method. After the device is powered on and runs the program of the watermark embedding method through the processor, the following steps are performed:

Obtain the carrier object of the watermark information to be extracted;

determining at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information is extracted from the carrier sub-object.

Optionally, when the watermark information is embedded in the carrier sub-object by calling a COM interface, the extracting the watermark information from the carrier sub-object includes:

Extract the watermark information from the hidden text box.

Optionally, the extracting watermark information from the carrier sub-object includes:

Use the decompression program to decompress the carrier object of the watermark information to be extracted to obtain the decompressed file;

The file corresponding to the carrier sub-object in which the watermark information is embedded is found from the decompressed file, and the watermark information is extracted from the file corresponding to the carrier sub-object.

Optionally, the extracting watermark information from the carrier sub-object includes:

Extract the watermark information from the text attribute of the carrier sub-object; or,

The watermark information is extracted from the synonyms.

Optionally, the text attribute includes at least one of the following:

The font size of the text; the spacing of the text; the phonetic alignment of the text.

Optionally, the carrier sub-object is a table;

The extracting the watermark information from the carrier sub-object includes: extracting the watermark information from the attribute of the cell.

Optionally, the extracting the watermark information from the carrier sub-object includes: extracting first watermark information from the carrier sub-object; and converting the first watermark information into watermark information by using a scrambled password.

It should be noted that, for the detailed description of the electronic device provided by the seventh embodiment of the present application, reference may be made to the related description of the second embodiment of the present application, and details are not repeated here.

Corresponding to the watermark extraction method provided above, the eighth embodiment of the present application further provides a storage device,

A program containing a watermark extraction method is stored, and the program is executed by a processor to perform the following steps:

Obtain the carrier object of the watermark information to be extracted;

determining at least one carrier sub-object embedded with watermark information in the carrier object;

The watermark information is extracted from the carrier sub-object.

It should be noted that, for the detailed description of the storage device provided by the eighth embodiment of the present application, reference may be made to the related description of the second embodiment of the present application, and details are not repeated here.

The ninth embodiment of the present application provides a data processing method, which will be described below with reference to FIG. 14 .

As shown in FIG. 14, in step 1401, a carrier object is obtained, wherein the carrier object includes a data object to be embedded with watermark information.

As shown in FIG. 14, in step 1402, watermark information is obtained, wherein the watermark information includes an identifier to be embedded in the carrier object.

As shown in FIG. 14, in step 1403, at least one carrier sub-object in the carrier object is determined, wherein the carrier sub-object includes components of the carrier object, and the components include character data, format data, multimedia data and/or control data.

As shown in FIG. 14, in step 1404, the watermark information is embedded into the carrier sub-object.

Although the present application is disclosed above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present application The scope of protection shall be subject to the scope defined by the claims of this application.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory in the form of, for example, read only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media includes both persistent and non-permanent, removable and non-removable media, and storage of information may be implemented by any method or technology. Information may be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, excludes non-transitory computer-readable media, such as modulated data signals and carrier waves.

It will be appreciated by those skilled in the art that the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Claims (19)

1. A watermark embedding method, comprising:

acquiring watermark information to be embedded into a carrier object;

determining at least one carrier sub-object in which watermark information is to be embedded in the carrier object;

embedding the watermark information into the carrier sub-object, comprising:

embedding the watermark information into the carrier sub-object by calling a COM interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

2. The method according to claim 1, wherein the embedding the watermark information into the carrier sub-object by calling a COM interface comprises:

newly building a text box in a display area in the carrier object through a COM interface, and taking the text box as a carrier sub-object;

inserting the watermark information into the text box;

and hiding the text box inserted with the watermark information.

3. The method according to claim 2, wherein creating a text box in the display area of the display area in the carrier object through a COM interface, and using the text box as a carrier sub-object comprises:

newly building a text box at the edge of a display area in the carrier object through a COM interface;

setting the size of the newly-built text box to be minimum, and taking the obtained text box as a carrier sub-object.

4. The method according to claim 1, wherein said embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object comprises:

decompressing the carrier object by using a decompressing program to obtain a decompressed file;

acquiring a file corresponding to a carrier sub-object from the decompressed file, and embedding watermark information into the file corresponding to the carrier sub-object;

the method further comprises the following steps:

and compressing the decompressed file embedded with the watermark information to obtain the carrier object embedded with the watermark information.

5. The method of claim 1, wherein the carrier object is a table;

the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes: and taking the attributes of the cells as carrier sub-objects, and embedding the watermark information into the attribute information of the cells in the table.

6. The method of claim 1, further comprising: converting the watermark information into second watermark information by adopting a scrambling code mode;

the embedding the watermark information into the carrier sub-object comprises: embedding the second watermark information into the carrier sub-object.

7. A watermark extraction method, comprising:

obtaining a carrier object of watermark information to be extracted;

determining at least one carrier sub-object in the carrier object, wherein the watermark information is embedded in the carrier sub-object;

extracting watermark information from the carrier sub-object;

the carrier sub-object embedded with the watermark information is used for embedding the watermark information into the carrier sub-object by calling a COM (component object model) interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

8. The method of claim 7,

when embedding the watermark information into the carrier sub-object by calling a COM interface, extracting the watermark information from the carrier sub-object includes:

watermark information is extracted from the hidden text box.

9. The method of claim 7, wherein the extracting watermark information from the carrier sub-object comprises:

decompressing the carrier object to be extracted with the watermark information by using a decompressing program to obtain a decompressed file;

and finding out a file corresponding to the carrier sub-object embedded with the watermark information from the decompressed file, and extracting the watermark information from the file corresponding to the carrier sub-object.

10. The method of claim 7, wherein the extracting watermark information from the carrier sub-object comprises:

extracting the watermark information from the text attribute of the carrier sub-object; or,

and extracting the watermark information from the synonyms.

11. The method of claim 7, wherein the carrier sub-object is a table;

the extracting of the watermark information from the carrier sub-object includes: watermark information is extracted from the attributes of the cells.

12. The method of claim 7, wherein the extracting watermark information from the carrier sub-object comprises: extracting first watermark information from the carrier sub-object; and converting the first watermark information into watermark information by adopting a scrambling code.

13. A watermark embedding apparatus, comprising:

a watermark information obtaining unit, for obtaining the watermark information to be embedded into the carrier object;

the carrier sub-object determining unit is used for determining at least one carrier sub-object in which watermark information is to be embedded in the carrier object;

a watermark information embedding unit for embedding the watermark information into the carrier sub-object, comprising:

embedding the watermark information into the carrier sub-object by calling a COM interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

14. An electronic device, comprising:

a processor; and

a memory for storing a program of a watermark embedding method, the apparatus performing the following steps after being powered on and running the program of the watermark embedding method by the processor:

acquiring watermark information to be embedded into a carrier object;

determining at least one carrier sub-object in which watermark information is to be embedded in the carrier object;

embedding the watermark information into the carrier sub-object, comprising:

embedding the watermark information into the carrier sub-object by calling a COM interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

15. A storage device, characterized in that,

a program storing a watermark embedding method, the program being executed by a processor to perform the steps of:

acquiring watermark information to be embedded into a carrier object;

determining at least one carrier sub-object in which watermark information is to be embedded in the carrier object;

embedding the watermark information into the carrier sub-object, comprising:

embedding the watermark information into the carrier sub-object by calling a COM interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

16. A watermark extraction apparatus, comprising:

a carrier object obtaining unit, configured to obtain a carrier object from which watermark information is to be extracted;

a carrier sub-object determining unit, configured to determine at least one carrier sub-object in which watermark information is embedded;

a watermark information extraction unit for extracting watermark information from the carrier sub-object;

the carrier sub-object embedded with the watermark information is used for embedding the watermark information into the carrier sub-object by calling a COM (component object model) interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

17. An electronic device, comprising:

a processor; and

a memory for storing a program of a watermark extraction method, the apparatus performing the following steps after being powered on and running the program of the watermark embedding method by the processor:

obtaining a carrier object of watermark information to be extracted;

determining at least one carrier sub-object in the carrier object, wherein the watermark information is embedded in the carrier sub-object;

extracting watermark information from the carrier sub-object;

the carrier sub-object embedded with the watermark information is used for embedding the watermark information into the carrier sub-object by calling a COM (component object model) interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

18. A storage device, characterized in that,

a program storing a watermark extraction method, the program being executed by a processor to perform the steps of:

obtaining a carrier object of watermark information to be extracted;

determining at least one carrier sub-object in the carrier object, wherein the watermark information is embedded in the carrier sub-object;

extracting watermark information from the carrier sub-object;

the carrier sub-object embedded with the watermark information is used for embedding the watermark information into the carrier sub-object by calling a COM (component object model) interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

19. A data processing method, comprising:

acquiring a carrier object, wherein the carrier object comprises a data object in which watermark information is to be embedded;

acquiring watermark information, wherein the watermark information comprises an identifier to be embedded into the carrier object;

determining at least one carrier sub-object in the carrier object, wherein the carrier sub-object comprises components of the carrier object, the components comprising character data, format data, multimedia data and/or control data;

embedding the watermark information into the carrier sub-object, comprising:

embedding the watermark information into the carrier sub-object by calling a COM interface; and/or

Embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object;

wherein, the embedding the watermark information into the carrier sub-object by modifying the content recorded by the carrier object includes:

embedding the watermark information into the carrier sub-object as text attribute information; or,

replacing synonyms in the carrier sub-objects according to the watermark information;

the text attribute comprises at least one of the following:

the font size of the characters; the spacing of the words; character phonetic notation alignment mode.

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