KR101458149B1 - Method of Controlling File With Backing-up Hidden Files - Google Patents

Abstract

The present invention relates to a method of controlling a file installed in an operating system and a filtering driver using a hidden file backup, the method comprising: setting a protection list for restricting access of an application to a file and / or a folder; Filtering the protection list such that the application only accesses files and / or folders except for files and / or folders set as the protection list; And a step of backing up a file and / or a folder set as the protection list when an attribute of the parent folder of the file and / or folder set as the protection list is changed by the application, And changing a property of the file and / or the folder other than the file and / or folder. Therefore, the present invention has the effect of preventing the loss of the target folder (file) by physical change of the parent folder.

Description

{Method of Controlling File with Backing-up Hidden Files}

The present invention relates to a method and apparatus for backing up a target folder (file) that is dependent upon a physical change input signal, such as deletion or movement of a parent folder, after executing an important file (folder) To a file control method.

Windows operating systems have file systems such as FAT (File Allocation Table) and NTFS (New Technology File System) for file management, and files and folders operated by these file systems are given hidden attributes , It can be hidden from view to the user.

Generally, among files and folders located on a computer, hidden attributes are assigned to files and folders requiring security. A method of giving a hidden attribute is a method of directly assigning a hidden attribute to a file or a folder, FAT, and NTFS), it is possible to prevent specific files or folders from being visible to the outside.

However, even if a file (folder) is set to be hidden according to the above conventional art, if there is a physical change such as deletion or movement of a parent folder of a hidden file (folder), a problem that a target file Occurs.

Referring to FIG. 1, when the user 1 creates the sub folder 110 in the parent folder 100 in the drive D and hides the file 111, the file 111 is not exposed to the outside, However, when the upper folder 100 or the lower folder 110 is deleted by the user 2, the hidden file 111 of the user 1 is also deleted, which may cause another damage.

Therefore, there is a need to backup and save the target file (folder) in order to prevent the target file (folder) with the hidden function from being changed depending on the attribute change of the parent folder.

An object of the present invention is to perform a secure file (folder) management by backing up a target file (folder) even if there is a physical change in a parent folder of a target file (folder) to which the hidden function is set.

Another object of the present invention is to prevent a loss of a target file (folder) due to a user's mistake.

According to an aspect of the present invention, there is provided a method of controlling a file installed in an operating system and a filtering driver through a hidden file backup, the method comprising: setting a protection list for restricting access of an application to a file and / ; Filtering the protection list such that the application only accesses files and / or folders except for files and / or folders set as the protection list; And a step of backing up a file and / or a folder set as the protection list when an attribute of the parent folder of the file and / or folder set as the protection list is changed by the application, And changing a property of the file and / or the folder other than the file and / or the folder.

Preferably, the step of filtering the protection list includes applying the hidden attribute to the file and / or folder included in the protection list by the filtering driver. .

Preferably, the method further comprises setting user authentication for the filtered protection list, and receiving the user authentication when the application changes an attribute of a parent folder of the filtered protection list A file control method using a hidden file backup can be provided.

Preferably, the user authentication includes user identification information. The file control method may include a hidden file backup method.

Preferably, when the application changes attributes of a parent folder of a file and / or folder set to the protection list, generating an alert message indicating presence of the file and / or folder set in the filtered protection list And a file control method using a hidden file backup.

Advantageously, the step of changing the attribute of the parent folder is a step of the application deleting the parent folder.

Preferably, the step of changing the attribute of the parent folder is a step of moving the parent folder by the application.

Preferably, the step of changing the attribute of the parent folder further includes the step of temporarily storing the deleted parent folder in the designated area. .

Preferably, the step of performing the backup includes moving or copying a file and / or folder for which the filtering driver is set as a protected list to a top-level folder or a designated area. can do.

The present invention has an effect of preventing a loss of a target folder (file) due to a physical change of an upper folder.

In addition, the present invention has an effect of preventing a loss of a target folder (file) by a user's mistake.

In addition, the present invention has an effect that the user can safely back up the target folder (file) to automatically manage the file since the user does not need to manage the file.

1 is a diagram showing a conventional technique in which a subfolder (file) is deleted due to a physical change of an upper folder.
FIG. 2 conceptually shows a manner in which a security program according to the present invention is interlocked with an operating system.
3 is a block diagram illustrating a security program according to an embodiment of the present invention.
4 to 8 are views showing an embodiment of an interface displayed on a screen in a user interface module.
9 is a diagram illustrating a backup function for a subfolder (file) according to an embodiment of the present invention.
10 is a diagram illustrating a method of controlling a file through backed-up file backup according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the number of the drawings.

First, a method of setting a hidden function for a target folder (file) will be described. Next, a file control method for preventing the attribute of the subfolder (file) from being changed even after changing the attribute of the parent folder will be described. Hereinafter, the target folder (file) can be understood to have the same meaning as the subfolder (file) in the drawing.

FIG. 2 conceptually shows a manner in which a security program according to the present invention is interlocked with an operating system.

Referring to FIG. 2, the security program includes a filtering driver 210. The filtering driver 210 may be located between the file system driver 230 of the operating system and the application 220. In order to access the file (or folder), the normal application 220 accesses the file system driver 230 of the operating system to request a list of files or folders. The filtering driver 210 filters the list of the user-set files or folders (protection list) when the application 220 attempts to access the file or folder through the file system driver 230, Only exposed files and folders are exposed. Accordingly, the application 220 can not obtain a user-set protection list, and can not recognize the existence of a file or a folder included in the protection list. The filtering driver 210 hides the existence of the user selected files and folders between the file system driver 230 and the application 220 so that the file system driver 230 or the application 220 can recognize the user- none. This prevents an external intruder or malicious code from recognizing a user-set file or folder even if the file system is accessed by accessing the operating system.

3 is a block diagram illustrating a security program according to an embodiment of the present invention.

3, the security program may include a hidden configuration module 310, a trace removal module 320, a filtering driver 210, user configuration data 330, an authentication module, and a user interface module 350 .

The hidden setting module 310 may assign a hidden attribute to a file or a folder desired by the user. The files or folders that are customized in the hidden setting module 310 are not exposed to the file system driver 230 and the application 220 of the operating system by the filtering driver 210. [ At this time, the hidden setting module 310 may edit the hidden file or folder so that the user-set file or folder is hidden from the outside.

The trace removal module 320 can delete the history of access or the user-set file or folder is registered in the operating system. The trace removal module 320 can delete a temporary file, an Internet temporary file, a file playback record of the registry, a folder access record, and a URL (Universal Resource Locator) access record. If all of these records are deleted, no records of user-configured files and folders will remain in the operating system, so you can not trace hidden files and folders based on these records. For example, the trace removal module 320 may delete file information and access records registered in the operating system registry, or delete temporary files. The registry contains the name and path of the files located on the user's computer, and information about access records. Even if the file is set as a hidden attribute in the file system, it does not disappear. Therefore, the file with the hidden attribute can be found by the registry query. The trace removal module 320 may delete information about these files or folders from the registry in order to prevent the existence of a user-set file or folder from being exposed to the outside.

The filtering driver 210 filters the file or folder to protect the user-set file or folder. A representative example is a hidden setting to prevent the user or the user from viewing the file or folder. That is, when the application 220 accesses the file system driver 230, the user does not know the existence of the user-set file or folder by omitting the list of the user-set file or folder. Accordingly, even if an external intruder or a malicious code retrieves a system file of the operating system or accesses the file system driver 230, the presence of a user-set file or folder can not be known. In the conventional method of assigning a hidden attribute to a file or a folder, the file and the folder are exposed when the hidden file is accessed by querying the file system. However, the filtering driver 210 deletes the hidden area in the file system It has the advantage that the set file or folder is not exposed. However, the filtering is not limited to the hidden setting, and includes all the attribute changes of the parent folder that can be subordinated to the subfolder (file).

The user setting data 330 includes a list of files or folders desired by the user. The user setting data 330 may be encrypted and stored in a storage medium on which the operating system is installed (for example, a hard disk drive) or may be stored in the filtering driver 210 or the hidden setting module 310. However, it is not limited.

The authentication module 340 accesses the charging server and requests authentication of the security program. The authentication module 340 establishes a network connection to the charging server to request a verification code, and the charging server provides a verification code that is available to the security program once the agreed charge has been deposited. If authentication of the security program is not processed by the authentication module 340, the security program is installed in the computer but is not executed.

In addition, the authentication code needs to be prevented from being executed by more than one computer. For example, if the charging server issues a single authentication code and an authentication code is found on more than one computer, the charging server may invalidate one of the two, or invalidate the authentication code for both computers. The authentication module 340 requests the input of the authentication code every time the security program is activated or after the authentication is once authenticated, the authentication module 340 makes a network connection to the charging server every time the security program runs, instead of requesting a separate authentication code You can inquire about the validity of the authentication code.

The user interface module 350 is an interface that includes a menu for hiding files, or folders, deleting traces, and collectively hiding and collectively releasing files when a security program is installed on the user's computer, And informs the hidden setting module 310 of the protection target file or folder or deletes the history of the protection target file or folder to the trace removal module 320 by receiving the user input. In addition, the user interface module 350 may notify the user and the user of files and folders that are set by the filtering driver 210 so that the application 220 can not access the user-set file or folder

4 to 8 are views showing an embodiment of an interface displayed on the screen by the user interface module 350. In FIG.

4 to 8 illustrate an interface of a security program developed by the present applicant for commercialization. First, FIG. 4 shows an interface provided from a charging server to a user computer when a user's computer accesses the charging server.

The charging server supports the downloading of the security program, and the user computer selects the download banner 410 or 420 to download the security program. After downloading the security program from the user's computer and proceeding with the installation, the execution interface shown in Fig. 4 can be seen.

When the folder hiding menu 510 or the trail delete menu 520 is selected in the execution interface shown in Fig. 5, the interface shown in Fig. 6 can be displayed on the screen. The interface of FIG. 6 is one of submenus of the security program, and includes a folder addition menu 610 for selecting a security target folder, a folder deletion menu 620 for deleting a created folder or an existing folder, A full hide and release menu 630 for the folder, a trace removal menu 640 for removing file usage history, a main screen menu 650 for returning to the main screen, and an authentication code input menu 660 . If any one of the displayed menus 610 to 660 is selected by the user, the security program displays the authentication code input menu 660 on the screen, and when the correct authentication code is inputted, the security program can be driven.

When the correct authentication code is input, the use restriction for each of the menus 610 to 660 disappears. In this state, a "secret movie to be watched" and a "company document" corresponding to the reference numeral "710" (Registered) in the display menu 720 as shown in Fig. 8 and displayed on the display menu 720 when the selected folder 710 is selected, A top down menu 730 for setting for control can be displayed on the screen.

FIG. 8 illustrates an embodiment of an execution interface of the scratch delete menu 520 shown in FIG. 5, which checks and deletes details of a registry, a temporary file, an Internet temporary file, and a URL for a protected file .

Hereinafter, the file control method for preventing the attribute of the subfolder (file) from being changed even when the attribute of the parent folder is changed will be described.

9 is a diagram illustrating a backup function for a subfolder (file) according to an embodiment of the present invention.

Referring to FIG. 9, a hard disk, which is a space for storing and recording data, can be divided into a C drive, a D drive, and an E drive. In general, the directory has the following dependency structure. In the case of the D drive, for example, the directory has a dependent structure such as the D drive upper folder 100 subfolder 110 file 111. [ Therefore, the D drive creates the parent folder 100 in the inside, and includes a subfolder, a file, and the like.

When the user 1 gives the hidden attribute to the subfolder or file using the security program, the target folder (file) is not exposed to the outside, so that the parent folder 100 is empty or only the other files exist .

At this time, if the user 2 inputs a delete or move command for the reason that the parent folder 100 is unnecessary, the hidden subfolder (file) 110 or 111 is deleted or moved depending on the importance of the user 1 The data hiding security setting is out of the management range of the user 1 and the effect is negligible. That is, the subfolder (file) 110 or 111 with hidden security setting is deleted or moved and can not be found.

In order to solve this problem, the filtering driver 210 backs up a hidden subfolder (file) 110 or 111 and stores it. The backup can be a copy or move to a subfolder (file), and the subfolder (file) is preserved in spite of the attribute change such as deletion of the parent folder. Backed up subfolders (files) are backed up to the top-level folder or designated area.

Accordingly, the subfolder (file) 110 or 111 is backed up by the filtering driver 210 and is independently stored without being affected by the physical change of the parent folder 100. [ The filtering driver 210 performs attribute change by the user only for files and / or folders other than the filtered subfolders (files) 110 and 111 that are set as the protection list. When the attribute is changed by deletion or movement of the parent folder, the child folder (file) is located in the hierarchy, the top folder, or the designated area of the parent folder.

When the attribute change of the parent folder is deleted, the deleted parent folder (including the subfolder (file) therein) is temporarily stored in the designated area, thereby preventing the subfolder (file) from being permanently deleted can do.

The backup location of the subfolder (file) 110 or 111 and the location of the deleted parent folder may be verified through the security program.

On the other hand, in addition to the above-mentioned method of adding a new attribute, when a property of a subfolder (file) is changed, a method of generating a warning message about the fact that the user has been authenticated or changed the attribute It is possible to prevent the property change of the parent folder from being changed.

When the user is authenticated, the filtering driver sets user authentication in the filtered protection list, i.e., a subfolder (file), and then, when the application changes an attribute of the parent folder, It is not possible to change the attribute of the parent folder unintentionally. The user authentication may be performed through a method of setting and receiving user identification information such as a password, a resident registration number, a mobile phone number, or an I-PIN.

When generating an alert message, the filtering driver generates a message indicating that a filtered subfolder (file) exists in the parent folder when the application changes an attribute of the parent folder, It does.

FIG. 10 is a diagram illustrating a file control method using hidden file backup according to an embodiment of the present invention.

Referring to FIG. 10, in step S1010, the filtering driver sets a file and / or a folder set by the user as a protected list, and selects a file and / or folder to be deleted or changed.

In step S1020, the filtering driver filters the protection list, and deletes or changes the file and / or folder set in the protection list.

In step S1030, the application changes the attribute of the upper folder of the protection list by the user, in which case, the protection list in the lower directory is deleted or changed.

In step S1040, the filtering driver backs up the file and / or the folder corresponding to the protection list, and preserves the protection list regardless of deletion of an upper folder or change of an attribute.

In step S1040, the filtering driver backs up the file and / or folder corresponding to the protection list.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: parent folder
110: Subfolder
111: File
210: Filtering Dry
220: Application
230: File System Driver
310: hidden configuration module
320: trace removal module
330: User setting data
340: Authentication module
350: User Interface Module

Claims (9)

A method for controlling a file installed in an operating system and hidden by a filtering driver through file backup,
Setting a protection list for restricting access of an application to at least one of a file and a folder;
Filtering the protection list so that the application accesses only at least one of a file and a folder excluding at least one of a file and a folder set as the protection list;
Backing up at least one of a file and a folder set as the protection list when an attribute of at least one of a file and a folder set as the protection list is changed by the application;
And changing an attribute of at least one of a file and a folder other than at least one of the file and the folder set as the protection list
A file control method using a hidden file backup.
The method according to claim 1,
Wherein filtering the protection list comprises:
Wherein the filtering driver applies a hidden attribute to at least one of a file and a folder included in the protection list
A file control method using a hidden file backup. 3. The method according to claim 1 or 2,
Filtering the protection list and setting up user authentication for the filtered protection list;
And receiving the user authentication before the backup when an attribute of at least one of the upper folder and the folder set in the protection list is changed by the application
A file control method using a hidden file backup.
The method of claim 3,
The user authentication may include user identification information
A file control method using a hidden file backup.
3. The method according to claim 1 or 2,
And generating an alert message indicating presence of at least one of a file and a folder set in the filtered protection list when the application changes an attribute of at least one of a file and a folder set as the protection list
A file control method using a hidden file backup.
3. The method according to claim 1 or 2,
The step of changing the attribute of the parent folder is a step of the application deleting the parent folder
A file control method using a hidden file backup.
3. The method according to claim 1 or 2,
The step of changing the attribute of the parent folder is a step of moving the parent folder by the application
A file control method using a hidden file backup.
The method according to claim 6,
And further storing the deleted upper folder in a designated area temporarily
A file control method using a hidden file backup.
3. The method according to claim 1 or 2,
The backup,
The filtering driver moves or copies at least one of a file and a folder set as the protection list to a top-level folder or a designated area
A file control method using a hidden file backup.

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