KR20090097522A - Service method using file eigenvalue and computer-readable medium thereof - Google Patents

Abstract

A service method using a file Eigen-value and a computer-readable medium thereof are provided to enable the guarantee of reliability for a file by confirming the change history for a data file. A service method using a file Eigen-value comprises the steps of: analyzing each characteristic according to the kind of files(S100); extracting a reference Eigen-value from the analyzed characteristics(S200); extracting a file Eigen-value from a target file(S300); comparing the target file Eigen-value and the reference file Eigen-value(S400); judging a file through the comparison result(S500); and providing the file based on the determination result(S600).

Description

Service method using file eigenvalue and its recording medium {Service method using file eigenvalue and computer-readable medium}

The present invention relates to a service method using a file unique value and a recording medium thereof, and more particularly, to analyze the characteristics of a file in which data is recorded, extract it, store it as an intrinsic value for the file, and use the same to provide various services. A service method using a file eigenvalue provided and a recording medium thereof.

A file in which data is stored and used on the Internet or a computer includes information on the characteristics and structure of the data stored in the file. That is, the file contains various information such as data type, extension, size, creation date, and modification date.

The data contained in these files can be variously changed by the user such as the contents or the extension. At this time, the changed file characteristics are overwritten with the information previously stored in the file, so that the original file information is lost.

In addition, if a file is saved by renaming a file extension or file name, a large number of files are stored unnecessarily. Therefore, a portal site for registering a file on a computer hardly consumes a storage space for storing the file. On the other hand, if a file is illegally tampered with by a virus, the user is not aware of it, so the user's system is often infected with a virus.

Also, in companies where security is vital, some employees often leak their confidential documents by changing their extensions or file names. The actions of these individuals not only cause the corporate image to fall, but also incur large economic losses.

The present invention is to solve the above problems, an object of the present invention is to extract and store the unique value of the characteristics and structure of the file to be able to check the changes of the file to ensure a reliable file The present invention provides a service method using a file eigenvalue and a recording medium thereof.

In addition, another object of the present invention to provide a service method and a recording medium using the file unique value that can prevent the leakage or modification of the file in the enterprise where security is important.

As a means for achieving the above object,

Analyzing each property according to each file type; Extracting and storing a reference eigenvalue from the analyzed characteristic; Analyzing and extracting a file unique value from the target file; Comparing the target file unique value with the reference file unique value; Determining based on the comparison result; Service through the determination result; characterized in that consisting of.

In addition, the unique value of the reference file is stored in the unique value server.

In addition, the determining step is characterized by checking whether the target file intrinsic value has been modified.

In addition, the determination step is characterized by checking the duplicate storage of the target file unique value.

In the determining step, the target file unique value determines illegal files.

In addition, the storage step is characterized by adding the unique value of the new file to save.

In addition, the reference file unique value is characterized in that at least one of the file type, format, extension, and copyright.

Program code which can be read by a computer and analyzes each characteristic according to each file type; Program code for extracting and storing a reference eigenvalue from the analyzed characteristic; Program code for analyzing and extracting a file unique value from a target file; Program code for comparing a target file eigenvalue with a reference file eigenvalue; Program code determined through comparison result; And a program code serving through the determination result.

According to the present invention, it is possible to confirm the change history of the file in which data is recorded, thereby ensuring the reliability of the file.

In addition, the same file can be prevented from being stored in duplicate so that the space of the storage device is not unnecessarily consumed.

It can also contribute to the development of the digital contents industry by preventing illegal sharing of copyrighted files such as music or movies.

It also protects users' systems by checking files containing spam or viruses.

It can also be used for the security management of documents in the financial industry, government offices and corporations.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to components of each drawing, the same reference numerals are used for the same components as much as possible even if they are shown in different drawings.

In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a schematic system for providing a service using a file eigenvalue according to the present invention, and FIG. 2 is a flowchart illustrating a service method using the file eigenvalue according to the present invention. As shown in Fig. 1 and Fig. 2, the present invention provides a service method using the file eigenvalue analysis step (S100) for analyzing each characteristic according to each file type; Extracting and storing a reference eigenvalue from the analyzed characteristic (S200); Analyzing and extracting a file unique value from the target file (S300); Comparing the target file unique value with the reference file unique value (S400); Determining based on the comparison result (S500); Service through the determination result (S600); consists of.

A file is a related record in which data is stored on a computer and handled as a unit. Each of these files contains characteristics about the file, such as file size, type, and format.

In the present invention, the file intrinsic value (also called FDNA: File DNA) refers to an information about a file's type, format, extension, and copyright by analyzing the characteristics of the file. In other words, even if a file is converted in various ways, such as human DNA information, the original characteristic or structure of the file can be determined.

In this case, the eigenvalues related to the original characteristics of the file are referred to as reference file eigenvalues, and the eigenvalues extracted from the target file to be compared are called target file eigenvalues.

Hereinafter, various services provided using file eigenvalues will be described.

(Upload, download service on portal site)

As shown in FIG. 1, a unique value DB server S, a plurality of users U1, U2, U3 and a portal site P are connected to a wired / wireless communication network (hereinafter referred to as the Internet). Form a service network.

First, each file registered in the portal site P (for example, a search site such as Naver, Yahoo, Empas, Blue, etc.) is analyzed for its type.

At this time, the eigen value is extracted from the analyzed characteristic and stored. This unique value becomes the reference file unique value because information about the characteristics of the original file is stored. This reference file eigenvalue is stored in data form in the eigenvalue server S.

A plurality of users (U1, U2, U3) connected to the Internet can access the portal site (P) to upload or download files. In the case of uploading, it is necessary to check whether the target file is already registered in the connected portal site P, and in the case of downloading, it is necessary to determine whether the target file is a normal file.

That is, by analyzing and extracting the target file unique value from the target file to be compared with the reference file unique value, and comparing the reference file unique value stored in the unique value server with the target file unique value, It becomes possible to judge whether or not the file.

If the target file eigenvalues and the reference file eigenvalues are the same, the same file can be prevented from being registered by multiple users (U1, U2, U3) multiple times, simplifying file organization and unnecessary hard This reduces disk storage space, which reduces traffic. If the target file unique value and the reference file unique value are not the same value, the unique value for the new file may be analyzed and extracted and registered in the unique value server (S) and the portal site (P).

In addition, since the reference file unique value does not change like a human DNA, even if the information such as the file extension or the file name is changed, the change of the file can be easily understood by comparing the file with the target file unique value.

 In addition, it is possible to block the registration of illegal files in advance by managing the unique values for illegally distributed files, and copyright protection in the digital content industry is strengthened through the unique value information including copyright. It also prevents viruses or spam-related files from being registered or downloaded by users (U1, U2, U3).

(Surveillance service)

In another method, the unique value of a file included in various internet sharing sites or web hards is managed and monitored by a copyright company, thereby enabling a service using the unique value of a file. In other words, illegally shared files (for example, music, movies, online courses, books, etc.) or files that are illegally modified by viruses cannot be shared and used.

(Security service)

In another way, a unique value server (S) is provided in a network in the financial industry, government offices, and businesses to store and manage the unique values of confidential documents generated by each department, thereby preventing confidential documents from leaking to the outside. It is possible to provide a service that can strengthen the system.

(Service at the time of individual use)

Program code for analyzing each property according to each file type; Program code for extracting and storing a reference eigenvalue from the analyzed characteristic; Program code for analyzing and extracting a file unique value from a target file; Program code for comparing a target file eigenvalue with a reference file eigenvalue; Program code determined through comparison result; And a program code serving through the result of the determination; even when the Internet is not connected using the recording medium, the system can be optimized and maintained by determining whether the user's files are duplicated or not and whether the files have been tampered with. Will be.

1 is a schematic system for providing a service using file eigenvalues in accordance with the present invention;

2 is a service method flowchart using file eigenvalues according to the present invention;

Explanation of symbols on main parts of drawing

S: Eigenvalue server

P: portal site

U1, U2, U3: user

Claims (8)

Analyzing each property according to each file type (S100); Extracting and storing a reference eigenvalue from the analyzed characteristic (S200); Analyzing and extracting a file unique value from the target file (S300); Comparing the target file unique value with the reference file unique value (S400); Determining based on the comparison result (S500); Service through the determination result (S600); Service method using a file unique value, characterized in that consisting of. The method of claim 1, The reference file unique value is a service method using a file unique value, characterized in that stored in the unique value server (S). The method of claim 1, In the determining step (S500), the service method using the file eigenvalues, characterized in that whether or not the target file unique value is modified. The method of claim 1, In the determining step (S500), the service method using the file unique value, characterized in that for confirming the redundant storage of the target file unique value. The method of claim 1, In the determination step (S500), the service method using a file unique value, characterized in that for determining the illegal file is the target file unique value. The method of claim 1, In the storing step (S200), the service method using the file eigenvalues, characterized in that the addition of the new file eigenvalues. The method of claim 1, The reference file unique value is a service method using a file unique value, characterized in that at least one of the file type, format, extension, and copyright. Computer readable, Program code for analyzing each characteristic according to each file type; Program code for extracting and storing a reference eigenvalue from the analyzed characteristic; Program code for analyzing and extracting a file unique value from a target file; Program code for comparing the target file unique value with the reference file unique value; Program code that is determined based on the comparison result; And And a program code for servicing through the determination result.

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