CN111159665A - File label-based plaintext data tracing method and device - Google Patents
File label-based plaintext data tracing method and device Download PDFInfo
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- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
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- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
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Abstract
The invention provides a plaintext data tracing method and device based on file labels, which comprises the following steps: scanning and identifying the file type and the file sensitivity level of a plaintext data file; judging whether the plaintext data file has a file label; generating a unique file identifier; judging whether the plaintext data file has a file label, if not, generating a file label, and adding the file label to the data file; if the file label exists, judging whether the file sensitivity level changes, and judging whether to update the file label according to the judgment result; reporting the file label information of the plaintext data file to a log stored at a server side based on the file sensitive operation of the plaintext data file; and establishing association for the records with the same unique file identification to generate a tracing report. The invention permanently traces the plaintext data file with sensitive information and reports the related operations in a log mode, thereby being convenient for finding the risk of disclosure and improving the data security of enterprises.
Description
Technical Field
The invention relates to the field of information security, in particular to a plaintext data tracing method and device based on file labels.
Background
At present, with the increasing emphasis on data in various industries, the security problem of data gets the attention of data users. Data security is regarded as an important branch of information security, and is widely regarded by different industries. A data security management system is used as a data security protection means, and the current data security management system is gradually developed towards intellectualization so as to fit the use habit of a user.
The existing data security management system-based terminal realizes plaintext data tracing by relying on a full-disk scanning function and file labels in documents. Prior art 201810265186.1 is precisely a plaintext data tracing method developed based on sensitive data scanning functions, including full-disk intelligent scanning and manual scanning of a personal computer. The full-disk intelligent scanning refers to full-automatic background scanning, and on the premise that daily use of a user is not influenced, plaintext files containing sensitive information in the full-disk files are identified, and the full-disk intelligent scanning can continuously scan the files in the background; manual scanning, which refers to manually scanning a specified directory, identifying a plaintext file with sensitive information, and manually scanning to accurately scan a specific file. Based on the two scanning modes, after all the plaintext files with sensitive information in the personal computer or the personal mobile terminal are identified, the identified plaintext files with sensitive information are traced in the whole service system, and whether the files are compromised or not and all the compromised scenes are identified. However, in the above-mentioned methods, there is no unified management method for the file tags, the file usage overall process cannot be managed for the file tags, and the speed of querying whether the file is compromised or not and all compromised scenes is slow.
Disclosure of Invention
In order to solve the technical problems, the invention provides a plaintext data tracing method and device based on file tags, and the method and device are used for solving the technical problems that a unified management mode for the file tags is not available, the file tags cannot be managed in the whole file use process, whether the files are divulged or not and the query speed of all divulged scenes is low in the prior art.
According to a first aspect of the present invention, there is provided a file tag-based plaintext data tracing method, the method comprising the steps of:
step S101: scanning and identifying the file type and the file sensitivity level of a plaintext data file;
step S102: judging whether the plaintext data file has a file label, if so, entering a step S104; if not, the step S103 is executed;
step S103: generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type; entering step S106;
step S104: judging whether the file sensitivity level of the plaintext data file changes or not, if so, entering a step S105; if not, the step S106 is carried out;
step S105: updating the file sensitivity level of the plaintext data file, and generating a new file label based on the updated file sensitivity level;
step S106: reporting the file label information of the plaintext data file to a log of a server based on the file sensitive operation of the plaintext data file; and newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the file sensitive operation, the file sensitive level and the information of a file label of the data file, establishing association for records with the same file unique identifier according to a file unique identifier (UUID), and generating the plaintext data file tracing report.
Further, the file tag is saved in the binary stream of the plaintext data file.
Furthermore, the label management module provides an interface of the file label and provides access functions of adding, deleting, changing and checking the file label.
Further, the label management module stores the corresponding relation among the file name, the file sensitivity level, the file sensitivity operation and the file unique identifier (UUID) of the plaintext data file; and establishing association for the records with the same file unique identification (UUID) according to the file unique identification (UUID).
According to a second aspect of the present invention, there is provided a file tag-based plaintext data tracing apparatus, the apparatus comprising:
a scanning module: scanning and identifying the file type and the file sensitivity level of a plaintext data file;
a first judgment module: the device is used for judging whether the plaintext data file has a file label or not;
a file label adding module: for generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type;
a second judging module: the cleartext data file processing device is used for judging whether the file sensitivity level of the cleartext data file changes or not;
an update module: the file sensitivity level updating module is used for updating the file sensitivity level of the plaintext data file and generating a new file label based on the updated file sensitivity level;
a tracing report generation module: the system comprises a database, a database server and a database server, wherein the database is used for storing file label information of a plaintext data file; and newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the file sensitive operation, the file sensitive level and the information of a file label of the data file, establishing association for records with the same file unique identifier according to a file unique identifier (UUID), and generating the plaintext data file tracing report.
Further, the file tag is saved in the binary stream of the plaintext data file.
Furthermore, the label management module provides an interface of the file label and provides access functions of adding, deleting, changing and checking the file label.
Further, the label management module stores the corresponding relation among the file name, the file sensitivity level, the file sensitivity operation and the file unique identifier (UUID) of the plaintext data file; and establishing association for the records with the same file unique identification (UUID) according to the file unique identification (UUID).
According to a third aspect of the present invention, there is provided a system for tracing back plaintext data based on a file tag, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
the instructions are used for being stored by the memory, and being loaded and executed by the processor, so as to implement the method for tracing the plaintext data based on the file tag.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having a plurality of instructions stored therein; the instructions are used for loading and executing the method for tracing the plaintext data based on the file label.
According to the scheme of the invention, the data security management system terminal can permanently trace the plaintext data file with sensitive information based on the file sensitive level and the file unique identification (UUID) in the file label, and report the operation of the plaintext data file in a log mode, so that an administrator can find the risk of disclosure conveniently, and the data security of an enterprise is greatly improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flowchart of a method for tracing plaintext data based on a file tag according to an embodiment of the present invention;
FIG. 2 is a diagram of an Office type file tagged with a file tag, according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating the tagging of a PDF type file according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a tag management module according to an embodiment of the present invention;
FIG. 5 is a flowchart of a method for file tag-based plaintext data tracing according to an embodiment of the invention;
fig. 6 is a block diagram of a device for tracing back plaintext data based on a file tag according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Defining:
plain text label: the hidden characters are arranged in the plaintext file, the operation of a user on the file is not influenced, and the plaintext file can be traced by utilizing the hidden characters.
First, a flowchart of a method for tracing back plaintext data based on a file tag according to an embodiment of the present invention is described with reference to fig. 1. As shown in fig. 1, the method comprises the steps of:
step S101: scanning and identifying the file type and the file sensitivity level of a plaintext data file;
step S102: judging whether the plaintext data file has a file label, if so, entering a step S104; if not, the step S103 is executed;
step S103: generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type;
step S104: judging whether the file sensitivity level of the plaintext data file changes or not, if so, entering a step S105; if not, the step S106 is carried out;
step S105: updating the file sensitivity level of the plaintext data file, and generating a new file label based on the updated file sensitivity level;
step S106: reporting the file label information of the plaintext data file to a log of a server based on the file sensitive operation of the plaintext data file; and newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the file sensitive operation, the file sensitive level and the information of a file label of the data file, establishing association for records with the same file unique identifier according to a file unique identifier (UUID), and generating the plaintext data file tracing report.
The step S101: scanning and identifying the file type and the file sensitivity level of a plaintext data file, comprising:
and scanning the plaintext data file by using a sensitive data scanning function, wherein the sensitive data scanning function comprises full-disk intelligent scanning and manual scanning, judging whether the identified plaintext data file contains sensitive information, and not processing the plaintext data file without the sensitive information. The plaintext data to be processed below refers to a plaintext data file having sensitive information.
For the plaintext data file containing the sensitive information, determining the file type of the plaintext data file; and analyzing the file scanning result file, and acquiring a file hit file rule, the number of snapshots of a hit plaintext data file and the hit file sensitivity level.
The file type is identified by identifying the file header, and the file type comprises but is not limited to Office, Office X and PDF format, so that the file suffix can be prevented from being forged, and the file type can be identified more accurately.
The step S103: generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type, wherein the method comprises the following steps:
different file formats and different ways of adding file tags. And calling an interface of the file type, which is added with a file label, according to the file type, writing the unique file identifier and the file sensitivity level into corresponding file information of the plaintext data file, and generating a file label based on the unique file identifier (UUID) and the file sensitivity level, wherein the file label is stored in a binary stream of the plaintext data file.
In this embodiment, an interface for adding a file tag to Office, Office x, and PDF may be called, and the file tag may be written.
Step S104: judging whether the file sensitivity level of the plaintext data file changes or not, if so, entering a step S105; if not, the step S106 is carried out; the method comprises the following steps:
and acquiring the file sensitivity level of the plaintext data file and judging whether the file sensitivity level is changed or not because the file sensitivity level may be changed.
Step S105: updating the file sensitivity level of the plaintext data file, and generating a new file label based on the updated file sensitivity level;
and if the file sensitivity level is changed, namely the current file sensitivity level is different from the previous file sensitivity level, updating the file label.
Fig. 4 is a schematic diagram of a tag management module according to an embodiment of the present invention, as shown in fig. 4:
the label management module provides an interface of the file label and provides access functions of adding, deleting, changing and checking the file label.
The tag management module is local and provides functions of adding tags, inquiring tags, modifying tags and deleting tags.
And the scanning module for providing full-disk intelligent scanning and manual scanning sends data to the label management module. And after the scanning module hits the scanning result, calling an interface of the label management module to maintain the file label.
The label management module stores the corresponding relation among the file name, the file sensitivity level, the file sensitivity operation and the file unique identifier (UUID) of the plaintext data file; and establishing association for the records with the same file unique identification (UUID) according to the file unique identification (UUID). The association establishment has the advantages that the plaintext file tracing report of the plaintext data file can be directly generated, and the speed of generating the plaintext file tracing report is improved.
The step S106: reporting the file label information of the plaintext data file to a log of a server based on the file sensitive operation of the plaintext data file; newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the information of the file sensitive operation, the file sensitive level and the file label of the data file, establishing association for records with the same file unique identification according to a file unique identification (UUID) and generating the plaintext data file tracing report, and the record information comprises the following steps:
when a plaintext data file with sensitive data performs a file sensitive operation, a file tag is read, and all sensitive operations of the plaintext data file with sensitive data can be traced, wherein the sensitive operations include, but are not limited to, the following scenarios:
copying and pasting the files, externally sending the files to a U disk, externally sending the files to a shared folder, externally sending the files through third-party chat software, externally sending the files through an HTTP mailbox, externally sending the files through a client mailbox, and printing the files.
When the file sensitive operation is carried out on the data file with the file label, the file label information of the data file is reported to a log; and the server associates through the unique identification field in the unique file identification in the file label to generate a plaintext data file tracing report.
When sensitive operations of the data file are carried out, such as copying, mail outgoing, third-party program outgoing, U disk outgoing, shared folder outgoing and the like, file label information is read and the log is uploaded to a log server, all sensitive operations of the data file in the system can be seen according to the file unique identification in the file label, and the file is traced back in the whole life cycle.
The following further describes the file tag-based plaintext data tracing method according to the present invention with reference to the following embodiments. And deploying a data security management system, issuing a full-disk intelligent scanning strategy and a manual scanning strategy, and adding a file label to the plaintext data with sensitive data after all files of the disk are scanned.
The following describes the method for tracing the plaintext data based on the file tag according to the present invention with reference to fig. 5. As shown in fig. 5:
step S501: accessing a plaintext data file having sensitive information;
the access includes, but is not limited to, an outgoing operation, a file operation, to the plaintext data file.
Step S502: reading file label information;
and reading the file label information and uploading the file label information to a server.
Step S503: the supervising party performs log audit;
step S504: and generating a report of the plaintext data file.
And the server generates a report of the plaintext data file through the file unique identifier in the file tag, and finishes the tracing of the plaintext data file.
An embodiment of the present invention further provides a device for tracing back plaintext data based on a file tag, where as shown in fig. 6, the device includes:
a scanning module: scanning and identifying the file type and the file sensitivity level of a plaintext data file;
a first judgment module: the device is used for judging whether the plaintext data file has a file label or not;
a file label adding module: for generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type;
a second judging module: the cleartext data file processing device is used for judging whether the file sensitivity level of the cleartext data file changes or not;
an update module: the file sensitivity level updating module is used for updating the file sensitivity level of the plaintext data file and generating a new file label based on the updated file sensitivity level;
a tracing report generation module: the system comprises a database, a database server and a database server, wherein the database is used for storing file label information of a plaintext data file; and newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the file sensitive operation, the file sensitive level and the information of a file label of the data file, establishing association for records with the same file unique identifier according to a file unique identifier (UUID), and generating the plaintext data file tracing report.
The embodiment of the invention further provides a plaintext data tracing system based on the file label, which comprises the following steps:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
the instructions are used for being stored by the memory, and being loaded and executed by the processor, so as to implement the method for tracing the plaintext data based on the file tag.
The embodiment of the invention further provides a computer readable storage medium, wherein a plurality of instructions are stored in the storage medium; the instructions are used for loading and executing the method for tracing the plaintext data based on the file label.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a physical machine Server, or a network cloud Server, etc., and needs to install a Windows or Windows Server operating system) to perform some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A plaintext data tracing method based on file labels is characterized by comprising the following steps:
step S101: scanning and identifying the file type and the file sensitivity level of a plaintext data file;
step S102: judging whether the plaintext data file has a file label, if so, entering a step S104; if not, the step S103 is executed;
step S103: generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type; entering step S106;
step S104: judging whether the file sensitivity level of the plaintext data file changes or not, if so, entering a step S105; if not, the step S106 is carried out;
step S105: updating the file sensitivity level of the plaintext data file, and generating a new file label based on the updated file sensitivity level;
step S106: reporting the file label information of the plaintext data file to a log of a server based on the file sensitive operation of the plaintext data file; and newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the file sensitive operation, the file sensitive level and the information of a file label of the data file, establishing association for records with the same file unique identifier according to a file unique identifier (UUID), and generating the plaintext data file tracing report.
2. The method for file tag-based plaintext data tracing according to claim 1, wherein the file tag is stored in a binary stream of the plaintext data file.
3. The method for file tag-based plaintext data tracing according to claim 1, wherein the tag management module provides an interface for the file tag and provides access functions of adding, deleting, changing and checking the file tag.
4. The method for file tag-based plaintext data tracing according to claim 1, wherein the tag management module stores a correspondence of a file name, a file sensitivity level, a file sensitivity operation, a file unique identifier (UUID) of the plaintext data file; and establishing association for the records with the same file unique identification (UUID) according to the file unique identification (UUID).
5. An apparatus for tracing back plaintext data based on a file tag, the apparatus comprising:
a scanning module: scanning and identifying the file type and the file sensitivity level of a plaintext data file;
a first judgment module: the device is used for judging whether the plaintext data file has a file label or not;
a file label adding module: for generating a file unique identification (UUID); generating a file label based on the file unique identifier (UUID) and the file sensitivity level, determining the file type of the plaintext data file, and adding the file label in a mode corresponding to the file type;
a second judging module: the cleartext data file processing device is used for judging whether the file sensitivity level of the cleartext data file changes or not;
an update module: the file sensitivity level updating module is used for updating the file sensitivity level of the plaintext data file and generating a new file label based on the updated file sensitivity level;
a tracing report generation module: the system comprises a database, a database server and a database server, wherein the database is used for storing file label information of a plaintext data file; and newly adding record information of the file sensitive operation in the label management module, wherein the record information comprises the file sensitive operation, the file sensitive level and the information of a file label of the data file, establishing association for records with the same file unique identifier according to a file unique identifier (UUID), and generating the plaintext data file tracing report.
6. The apparatus for file tag-based plaintext data tracing based on claim 5, wherein the file tag is stored in a binary stream of the plaintext data file.
7. The apparatus for file tag-based plaintext data tracing according to claim 5, wherein the tag management module provides an interface for the file tag and provides access functions of adding, deleting, changing and checking the file tag.
8. The apparatus for file tag-based plaintext data tracing according to claim 5, wherein the tag management module stores a correspondence of a file name, a file sensitivity level, a file sensitivity operation, a file unique identifier (UUID) of the plaintext data file; and establishing association for the records with the same file unique identification (UUID) according to the file unique identification (UUID).
9. A system for tracing plaintext data based on file labels is characterized by comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the instructions are used for being stored by the memory and loaded by the processor to execute the method for file tag-based plaintext data tracing according to any one of claims 1 to 4.
10. A computer-readable storage medium having stored therein a plurality of instructions; the plurality of instructions for loading and executing by a processor the method for file tag based plaintext data tracing according to any of claims 1-4.
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Application publication date: 20200515 |