CN111259417A - File processing method and device - Google Patents
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Abstract
The embodiment of the invention provides a file processing method and a device, wherein the method comprises the following steps: if the original label exists in the target file, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the importance level of the file; and determining whether to update the label of the target file according to the new label and the original label. According to the file processing method and device provided by the embodiment of the invention, when the original tag exists in the target file, the current tag calibration strategy is started to detect the target file to determine the new tag of the target file, and then whether the tag of the target file is updated or not is determined according to the new tag and the original tag, so that whether actions such as stopping or auditing are executed or not is judged according to the tag of the target file, and further, the occurrence of a leakage event caused by the change of the important level of the file due to the modification of the strategy is prevented.
Description
Technical Field
The present invention relates to the field of file management technologies, and in particular, to a file processing method and apparatus.
Background
In the existing technology for preventing data files from leaking, the importance level of each data file is detected and judged, and corresponding calibration is carried out for distinguishing. When a data file with the importance level of an confidential file is transmitted outwards (such as being copied from a terminal to a mobile disk or sending a mail in an attachment mode), the data file can be blocked, and therefore the purpose of preventing the data file from being leaked is achieved. The data file is calibrated and judged through a label calibration strategy, but the method has the problems that after the label calibration strategy is changed, the important level of the file is changed, the original label is directly replaced, and if the label indicating the confidential file is changed into the label indicating the common file, the data file is inevitably leaked.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a file processing method and device.
In a first aspect, an embodiment of the present invention provides a file processing method, including:
if the original label exists in the target file, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
and determining whether to update the label of the target file according to the new label and the original label.
Further, the determining whether to update the tag of the target file according to the new tag and the original tag includes:
and if the importance levels of the new label and the original label are determined to be different and the importance level of the new label is smaller than that of the original label, the label of the target file is not updated.
Further, the determining whether to update the tag of the target file according to the new tag and the original tag includes:
and if the importance levels of the new label and the original label are determined to be different, and the importance level of the new label is greater than that of the original label, updating the label of the target file.
Further, the determining whether to update the tag of the target file according to the new tag and the original tag includes:
and when the importance level of the new label is determined to be different from that of the original label, acquiring a modification record of the current label calibration strategy, and updating the label of the target file to be the new label after determining that the current label calibration strategy is a legal label calibration strategy according to the modification record.
Further, still include: if the target file is determined to have no original label, acquiring a modification record of the current label calibration strategy, and after the current label calibration strategy is determined to be a legal label calibration strategy according to the modification record, detecting the target file according to the current label calibration strategy, and determining a label corresponding to the target file.
Further, still include: and if the current label calibration strategy is determined to be an illegal label calibration strategy, stopping detecting the target file.
Further, the determining that the current tag calibration policy is a legal tag calibration policy according to the modification record includes:
and acquiring a modification mark in the modification record, and determining that the modification mark is located in a pre-stored mark list, and then determining that the current label calibration strategy is a legal label calibration strategy.
In a second aspect, an embodiment of the present invention provides a file processing apparatus, including:
the determining module is used for starting a current label calibration strategy to detect the target file when the original label of the target file is determined to exist, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
and the processing module is used for determining whether to update the label of the target file according to the new label and the original label.
Further, the processing module is specifically configured to:
and when the importance levels of the new label and the original label are determined to be different and the importance level of the new label is smaller than that of the original label, the label of the target file is not updated.
Further, the processing module is specifically configured to:
and updating the label of the target file when the importance level of the new label is determined to be different from that of the original label and the importance level of the new label is greater than that of the original label.
Further, the processing module is specifically configured to:
and when the importance levels of the new label and the original label are determined to be different, acquiring a modification record of the current label calibration strategy, and updating the label of the target file to be the new label after determining that the current label calibration strategy is a legal label calibration strategy according to the modification record.
Further, the determining module is further configured to: when the target file is determined to have no original label, acquiring a modification record of a current label calibration strategy, and after the current label calibration strategy is determined to be a legal label calibration strategy according to the modification record, detecting the target file according to the current label calibration strategy, and determining a label corresponding to the target file.
Further, the determining module is further configured to: and when the current label calibration strategy is determined to be an illegal label calibration strategy, stopping detecting the target file.
Further, the processing module, in the process of determining that the current tag calibration policy is the legal tag calibration policy according to the modification record, is specifically configured to:
and acquiring a modification mark in the modification record, and determining that the modification mark is located in a pre-stored mark list, and then determining that the current label calibration strategy is a legal label calibration strategy.
In a third aspect, an embodiment of the present invention is an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the software analysis method when executing the program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of the software analysis method as described above.
In a fifth aspect, embodiments of the present invention provide a computer program product comprising computer executable instructions for implementing the steps of the file processing method as described above when executed.
According to the file processing method and device provided by the embodiment of the invention, when the original tag exists in the target file, the current tag calibration strategy is started to detect the target file to determine the new tag of the target file, and then whether the tag of the target file is updated or not is determined according to the new tag and the original tag, so that whether actions such as stopping or auditing and the like are executed or not is judged according to the tag of the target file, and further, the leakage event possibly caused by the fact that the important level of the file is changed and the tag is directly updated due to the modification of the strategy is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flowchart of an embodiment of a document processing method of the present invention;
FIG. 2 is a flowchart of another embodiment of a document processing method according to the present invention;
FIG. 3 is a flowchart of another embodiment of a file processing method according to the present invention;
FIG. 4 is a block diagram of an embodiment of a software analysis apparatus according to the present invention;
FIG. 5 is a block diagram of an embodiment of an electronic device according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.
In the existing technology for preventing leakage of data files, the importance level of a detected file is generally judged by a current label calibration strategy, and then whether actions such as stopping or auditing and the like are executed or not is determined according to the importance level of the file. However, there is a problem that when the current tag marking strategy is tampered, the importance level of the file is changed, and thus the data file is leaked.
To this end, fig. 1 shows a schematic flow chart of a file processing method according to an embodiment of the present invention, and referring to fig. 1, the method includes:
s11, if the original label of the target file is determined, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
and S12, determining whether to update the label of the target file according to the new label and the original label.
With respect to step S11 and step S12, it should be noted that, in the embodiment of the present invention, before the target file is to be transferred to an external device (e.g., to a usb disk, such as sending a mail), the system first determines whether the target file has an original tag. The original label is a label determined by scanning and detecting the target file by a previous label calibration strategy. Here, the tag includes an important level of the file, but is not limited thereto, and tag contents may be added according to a specific execution function. The importance levels may include, in order from high to low, confidential documents, sensitive documents, general documents, and public documents.
And when the original label of the target file is determined, the current label calibration strategy is started again to scan and detect the target file, so that a new label of the target file is determined. The new label is determined by scanning and detecting the target file according to the current label calibration strategy.
And after the original label and the new label of the target are determined, determining whether to update the label of the target file according to the new label and the original label. And if the label of the target file is not updated, determining whether to execute actions such as stopping or auditing and the like according to the original label. And if the label of the target file is updated, determining whether to execute the actions such as organization or audit according to the new label.
According to the file processing method provided by the embodiment of the invention, when the original tag exists in the target file, the current tag calibration strategy is started to detect the target file to determine the new tag of the target file, and then whether the tag of the target file is updated or not is determined according to the new tag and the original tag, so that whether actions such as stopping or auditing and the like are executed or not is judged according to the tag of the target file, and further, the leakage event possibly caused by directly updating the tag due to the change of the important level of the file caused by the modification of the strategy is prevented.
Fig. 2 is a schematic flowchart illustrating a file processing method according to an embodiment of the present invention, and referring to fig. 2, the method includes:
s21, if the original label of the target file is determined, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
s22, if the important level of the new label is determined to be different from that of the original label and the important level of the new label is smaller than that of the original label, the label of the target file is not updated;
and S23, if the importance level of the new label is determined to be different from that of the original label and the importance level of the new label is greater than that of the original label, updating the label of the target file.
Regarding step S21, the step is basically the same as step S11 of the above embodiment, and is not described again here.
With respect to step S22 and step S23, it should be noted that, in the embodiment of the present invention, after the original tag and the new tag of the object are both determined, when it is determined that the importance levels of the new tag and the original tag are different, and the importance level of the new tag is smaller than the importance level of the original tag, the tag of the object file is not updated. Thereby ensuring that the target file stays at a relatively high level. And when the importance level of the new label is determined to be different from that of the original label and the importance level of the new label is greater than that of the original label, updating the label of the target file.
And if the label of the target file is not updated, determining whether to execute actions such as stopping or auditing and the like according to the original label. And if the label of the target file is updated, determining whether to execute the actions such as organization or audit according to the new label.
According to the file processing method provided by the embodiment of the invention, when the original tag exists in the target file, the current tag calibration strategy is started to detect the target file to determine the new tag of the target file, and then whether the tag of the target file is updated or not is determined according to the new tag and the original tag, so that whether actions such as stopping or auditing and the like are executed or not is judged according to the tag of the target file, and further, the leakage event possibly caused by directly updating the tag due to the change of the important level of the file caused by the modification of the strategy is prevented.
Fig. 3 is a flowchart illustrating a file processing method according to an embodiment of the present invention, and referring to fig. 3, the method includes:
s31, if the original label of the target file is determined, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
and S32, acquiring a modification record of the current label calibration strategy when the importance level of the new label is determined to be different from that of the original label, and updating the label of the target file to be a new label after determining that the current label calibration strategy is a legal label calibration strategy according to the modification record.
Regarding step S31, the step is basically the same as step S11 of the above embodiment, and is not described again here.
For step S32, it should be noted that, in the embodiment of the present invention, after determining that the importance levels of the new tag and the original tag are different, since there may be a case that the current tag calibration policy is legally modified or illegally modified, it is necessary to further determine whether the current tag calibration policy is legally modified. And acquiring a modification record of the current label calibration strategy, wherein the modification record contains more information, determining whether the current label calibration strategy is legally modified according to the information, and updating the label of the target file according to the new label when the current label calibration strategy is legally modified. In addition, when the modification of the current label calibration strategy is determined to be illegal, the detection of the target file is stopped.
In a further embodiment of the method according to the above embodiment, it is mainly explained that it is determined whether the current tag calibration policy is legally modified, the modification flag in the modification record is obtained, and it is determined that the modification flag is located in the pre-stored flag list, and it is determined that the current tag calibration policy is legally modified.
According to the file processing method provided by the embodiment of the invention, when the original tag exists in the target file, the current tag calibration strategy is started to detect the target file to determine the new tag of the target file, then the modification record of the current tag calibration strategy is obtained after the important level of the new tag is determined to be different from that of the original tag, the modification of the current tag calibration strategy is determined to be legal according to the modification record, and the tag of the target file is updated, so that whether actions such as stopping or auditing are executed or not is judged according to the tag of the target file, and further the leakage event possibly caused by directly updating the tag due to the change of the important level of the file caused by the modification of the strategy is prevented.
In a further embodiment of the foregoing method in each embodiment, when it is determined that the original tag does not exist in the target file, obtaining a modification record of the current tag calibration policy, and determining that the current tag calibration policy is a legal tag calibration policy, the target file is detected according to the current tag calibration policy, and a tag corresponding to the target file is determined.
In addition, when the current label calibration strategy is determined to be an illegal label calibration strategy, the detection of the target file is stopped.
In a further embodiment of the foregoing methods in each embodiment, after the target file is revealed, the terminal revealing the target file may be tracked according to the terminal identifier included in the tag corresponding to the target file, so as to determine the target person.
Fig. 4 is a schematic structural diagram of a document processing apparatus according to an embodiment of the present invention, and referring to fig. 4, the apparatus includes a determining module 41 and a processing module 42, where:
a determining module 41, configured to start a current tag calibration policy to detect a target file when it is determined that the target file has an original tag, and determine a new tag corresponding to the target file, where the tag includes an important level of the file, and the tag calibration policy is used to calibrate the important level of the file;
and the processing module 42 is configured to determine whether to update the tag of the target file according to the new tag and the original tag.
Since the principle of the apparatus according to the embodiment of the present invention is the same as that of the method according to the above embodiment, further details are not described herein for further explanation.
It should be noted that, in the embodiment of the present invention, the relevant functional module may be implemented by a hardware processor (hardware processor).
According to the file processing device provided by the embodiment of the invention, when the original tag exists in the target file, the current tag calibration strategy is started to detect the target file to determine the new tag of the target file, and then whether the tag of the target file is updated or not is determined according to the new tag and the original tag, so that whether actions such as stopping or auditing are executed or not is judged according to the tag of the target file, and further, the leakage event possibly caused by directly updating the tag due to the change of the important level of the file caused by the modification of the strategy is prevented.
In a further embodiment of the apparatus of the above embodiment, the processing module is specifically configured to:
and when the importance levels of the new label and the original label are determined to be different and the importance level of the new label is smaller than that of the original label, the label of the target file is not updated.
In a further embodiment of the apparatus of the above embodiment, the processing module is specifically configured to:
and updating the label of the target file when the importance level of the new label is determined to be different from that of the original label and the importance level of the new label is greater than that of the original label.
In a further embodiment of the apparatus of the above embodiment, the processing module is specifically configured to:
and when the importance levels of the new label and the original label are determined to be different, acquiring a modification record of the current label calibration strategy, and updating the label of the target file to be the new label after determining that the current label calibration strategy is a legal label calibration strategy according to the modification record.
In a further embodiment of the apparatus of the above embodiment, the determining module is further configured to: when the target file is determined to have no original label, acquiring a modification record of a current label calibration strategy, and after the current label calibration strategy is determined to be a legal label calibration strategy according to the modification record, detecting the target file according to the current label calibration strategy, and determining a label corresponding to the target file.
In a further embodiment of the apparatus of the above embodiment, the determining module is further configured to: and when the current label calibration strategy is determined to be an illegal label calibration strategy, stopping detecting the target file.
In a further embodiment of the apparatus in the foregoing embodiment, the processing module, in the process of determining that the current tag calibration policy is the legal tag calibration policy according to the modification record, is specifically configured to:
and acquiring a modification mark in the modification record, and determining that the modification mark is located in a pre-stored mark list, and then determining that the current label calibration strategy is a legal label calibration strategy.
Since the principle of the apparatus according to the embodiment of the present invention is the same as that of the method according to the above embodiment, further details are not described herein for further explanation.
It should be noted that, in the embodiment of the present invention, the relevant functional module may be implemented by a hardware processor (hardware processor).
The file processing device provided by the embodiment of the invention starts the current label calibration strategy to detect the target file to determine the new label of the target file when the original label exists in the target file, then obtains the modification record of the current label calibration strategy after determining that the important levels of the new label are different from the important levels of the original label, and updates the label of the target file if the modification of the current label calibration strategy is legal according to the modification record, thereby realizing the judgment of whether to execute actions such as blocking or auditing and the like according to the label of the target file, and further preventing the occurrence of leakage events possibly caused by directly updating the label due to the change of the important levels of the file caused by the modification of the strategy.
Fig. 5 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 5: a processor (processor)51, a communication Interface (communication Interface)52, a memory (memory)53 and a communication bus 54, wherein the processor 51, the communication Interface 52 and the memory 43 complete communication with each other through the communication bus 54. The processor 51 may call logic instructions in the memory 53 to perform the following method: when the original label of the target file is determined to exist, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file; and determining whether to update the label of the target file according to the new label and the original label.
In addition, the logic instructions in the memory 53 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, and the method includes: when the original label of the target file is determined to exist, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file; and determining whether to update the label of the target file according to the new label and the original label.
Embodiments of the present invention further provide a computer program product, where the computer program product includes computer-executable instructions, where the instructions are implemented to perform the methods provided in the foregoing embodiments, for example, the methods include: when the original label of the target file is determined to exist, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file; and determining whether to update the label of the target file according to the new label and the original label.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A file processing method, comprising:
if the original label exists in the target file, starting a current label calibration strategy to detect the target file, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
and determining whether to update the label of the target file according to the new label and the original label.
2. The file processing method according to claim 1, wherein the determining whether to update the tag of the target file according to the new tag and the original tag comprises:
and if the importance levels of the new label and the original label are determined to be different and the importance level of the new label is smaller than that of the original label, the label of the target file is not updated.
3. The file processing method according to claim 1, wherein the determining whether to update the tag of the target file according to the new tag and the original tag comprises:
and if the importance levels of the new label and the original label are determined to be different, and the importance level of the new label is greater than that of the original label, updating the label of the target file.
4. The file processing method according to claim 1, wherein the determining whether to update the tag of the target file according to the new tag and the original tag comprises:
and if the importance levels of the new label and the original label are different, acquiring a modification record of the current label calibration strategy, and updating the label of the target file to be the new label after determining that the current label calibration strategy is a legal label calibration strategy according to the modification record.
5. The document processing method according to claim 1, further comprising: if the target file is determined to have no original label, acquiring a modification record of the current label calibration strategy, and after the current label calibration strategy is determined to be a legal label calibration strategy according to the modification record, detecting the target file according to the current label calibration strategy, and determining a label corresponding to the target file.
6. The document processing method according to claim 5, further comprising: and if the current label calibration strategy is determined to be an illegal label calibration strategy, stopping detecting the target file.
7. The file processing method of claim 4, wherein the determining that the current tag label policy is a legal tag label policy according to the modification record comprises:
and acquiring a modification mark in the modification record, and determining that the modification mark is located in a pre-stored mark list, and then determining that the current label calibration strategy is a legal label calibration strategy.
8. A document processing apparatus, characterized by comprising:
the determining module is used for starting a current label calibration strategy to detect the target file when the original label of the target file is determined to exist, and determining a new label corresponding to the target file, wherein the label comprises the important level of the file, and the label calibration strategy is used for calibrating the important level of the file;
and the processing module is used for determining whether to update the label of the target file according to the new label and the original label.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the document processing method according to any one of claims 1 to 7 are implemented when the processor executes the program.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of the document processing method according to any one of claims 1 to 7.
11. A computer program product comprising computer executable instructions for performing the steps of the document processing method according to any one of claims 1 to 7 when executed.
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