WO2016108637A1

WO2016108637A1 - User authentication method and apparatus using wood grain image

Info

Publication number: WO2016108637A1
Application number: PCT/KR2015/014511
Authority: WO
Inventors: 박준규
Original assignee: 주식회사나무카드
Priority date: 2014-12-30
Filing date: 2015-12-30
Publication date: 2016-07-07
Also published as: KR101715921B1; KR20160080976A; CN107113176A

Abstract

A user authentication method using a wood grain image according to an embodiment of the present invention may comprise the steps of: mapping a reference wood grain image, which is extracted from a wood grain of a tree inserted into a user authentication object, to the user authentication object, and storing the mapped reference wood grain image; receiving a recognized wood grain image of the user authentication object, recognized through a user authentication terminal, and user authentication data including identification data for identifying the user authentication object; and authenticating a user by comparing the recognized wood grain image with the reference wood grain image

Description

User Authentication Method and Device Using Wood Grain Images

The present invention relates to a user authentication method using a wood grain image, and relates to a method for authenticating a user using a unique image of wood grain and an apparatus for performing the method.

Recently, the use of social security numbers has been completely banned, and as the security problems caused by the leakage of user information become serious, various researches on how to identify users while maintaining security are being conducted.

In this case, the method of authenticating login using the image object is performed by a method of recognizing the image object and authenticating the user. In this regard, Korean Patent Publication No. 2012-0037330 (published on April 19, 2012), which is a prior art, generates an image object corresponding to a QR code according to user identification information, authenticates a user using the generated image object, and logs in. A method of handling whether a request is approved is disclosed.

However, in order to generate an image object according to user identification information, a QR code should be used, and since the QR code is generated by a preset algorithm, the user information may be leaked when the algorithm or information is leaked.

Meanwhile, an authentication method using biometric information such as a fingerprint, an iris or a voice may be used to replace the authentication method using a QR code. However, the authentication method using such biometric information may cause a fatal problem of privacy infringement due to leakage of personal information.

Therefore, there is a demand for the development of a new authentication method to solve the problems of the aforementioned authentication methods.

In one embodiment of the present invention, by embedding or exteriorizing a tree in a user authentication object for user authentication, and authenticating using a unique wood grain that is not replicable of the tree, a replicatable identification object or a living body, such as an existing QR code, In addition to replacing authentication means with the possibility of personal information leakage such as information, and by inserting additional identification objects such as chips in the authentication object to authenticate with the grained image, it is possible to increase the security level and diversify the means of user identification and authentication. It may provide a method and apparatus that can be. However, the technical problem to be achieved by the present embodiment is not limited to the technical problem as described above, and other technical problems may exist.

As a technical means for achieving the above-described technical problem, an embodiment of the present invention, the step of mapping and storing the reference wood grain image extracted from the wood grain (Wood Grain) inserted into the user authentication object and the user authentication object, Receiving a recognition wood grain image of the user authentication object recognized through the user authentication terminal and user authentication data including identification data identifying the user authentication object, and comparing the reference wood grain image and the recognition wood grain image to authenticate the user. Include.

According to any one of the problem solving means of the present invention described above, by embedding or exterior wood to the authentication object, by authenticating the user by using a unique wood grain image that can not be replicated, there is an effect that can increase the security.

1 is a block diagram illustrating a user authentication system using a wood grain image according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating the user authentication server illustrated in FIG. 1.

FIG. 3 is a diagram for describing a user authentication object and a tree as an authentication means included in FIG. 1.

FIG. 4 is a diagram for describing an embodiment of extracting a feature point from the user authentication object illustrated in FIG. 1.

5 is a diagram illustrating a process of transmitting and receiving data between components included in the user authentication system using the wood grain image of FIG. 1 according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating a user authentication method using a wood grain image according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components, unless specifically stated otherwise, one or more other features It is to be understood that the present disclosure does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a user authentication system using a wood grain image according to an embodiment of the present invention. Referring to FIG. 1, the user authentication system 1 using a wood grain image may include a user authentication object 100, a user authentication terminal 200, and a user authentication device. The user authentication device may be, for example, the user of FIG. 1. It may be an authentication server 400. However, since the user authentication system 1 using the wood grain image of FIG. 1 is only an embodiment of the present invention, the present invention is not limitedly interpreted through FIG. 1.

In this case, each component of FIG. 1 is generally connected through a network 300. For example, as shown in FIG. 1, the user terminal 200 and the user authentication server 400 may be connected through the network 300.

Here, the network 300 refers to a connection structure capable of exchanging information between each node such as terminals and servers. An example of such a network 300 is the Internet or a local area network. ), Wireless local area network (WLAN), wide area network (WAN), personal area network (PAN), 3G, 4G, LTE, Wi-Fi, and the like, but are not limited thereto. In addition, the user authentication terminal 200 and the user authentication server 400 disclosed in FIG. 1 are not limited to those shown in FIG. 1.

The user authentication object 100 may be an object for authenticating a user. For example, the user authentication object 100 may be a passport, credit card, national ID card, or the like. Alternatively, the user authentication object 100 may be a document requiring any identification and security, such as a security document. Meanwhile, the user authentication object 100 may be a memory such as a subscriber identification module (SIM) card for wireless communication such as a universal subscriber identification module (USIM) card or a payment chip for a mobile payment solution, in addition to the general card type object. It can be a chip. As described above, the user authentication system and method using the wood grain image according to an embodiment of the present invention may be utilized as an additional security means for communication or mobile payment solution.

The tree 110 may be inserted into the user authentication object 100, and the inserted tree 110 may be sliced and embedded or exterior. Here, the tree 110 may have a unique wood grain (Wood Grain), the pattern of the wood grain may vary depending on the type of the wood 110, the origin, the production site, the manufacturer, the number of years of growth. Therefore, the user authentication object 100 according to an embodiment of the present invention may be configured to include a tree 110 so that the user authentication terminal 200 can authenticate the user using the unique wood grain. In addition, the user authentication object 100 may further include an identification object 130 such as a chip, an image, a tag, and the like, which may store user information in addition to the tree 110. The chip may be an RFID chip, an IC chip, or the like, the image may be a QR code, a barcode, or the like, and the tag may be an RFID tag, an NFC tag, or the like. Accordingly, the user authentication object 100 enables the user authentication terminal 200 to authenticate the user by using the identification object 130 such as chips, images, tags, etc., in addition to the wood grains that are unique patterns of the tree 110. .

The user authentication terminal 200 may be a terminal that authenticates a user through the user authentication object 100 through recognition such as scanning, reading, or photographing the user authentication object 100. Here, the user authentication terminal 200 may recognize an image or a tag including wood grain of the user authentication object 100 through light irradiation such as infrared rays, ultraviolet rays, and lasers. In addition, the user authentication terminal 200 may recognize an image or tag including wood grain of the user authentication object 100 through photographing or scanning. In addition, the user authentication terminal 200 may recognize the information of the user authentication object 100 by reading a chip or a tag. In this case, the user authentication terminal 200 may be implemented as a computer that can access a server or a terminal in a remote location through the network 300. Here, the computer may include, for example, a notebook, a desktop, a laptop, and the like. In addition, the user authentication terminal 200 may be implemented as a mobile terminal that can be connected to a server or a terminal in a remote place through the network 300. The mobile terminal is, for example, a wireless communication device that ensures portability and mobility, and includes a personal communication system (PCS), a global system for mobile communications (GSM), a personal digital cellular (PDC), a personal handyphone system (PHS), PDA (Personal Digital Assistant), International Mobile Telecommunication (IMT) -2000, Code Division Multiple Access (CDMA) -2000, W-Code Division Multiple Access (W-CDMA), Wireless Broadband Internet (WBRO) terminal, smartphone Handheld-based wireless communication devices such as smart pads, tablet PCs, and the like. When the user authentication terminal 200 is implemented as such a mobile terminal, the user authentication terminal 200 may obtain and store a wood grain image from the user authentication object 100, which will be described in detail below.

The user authentication server 400 may store information of the user authentication object 100. In this case, the stored information of the user authentication object 100 may include an image such as a wood grain image, a chip, a tag, a barcode, or a QR code, information for identifying the user authentication object 100, and information of the user. Information. In addition, the user authentication server 400 may receive information of the user authentication object 100 recognized through the user authentication terminal 200 from the user authentication terminal 200. In addition, when the information of the user authentication object 100 is a wood grain image, the user authentication server 400 may extract a feature point from the wood grain image and check whether or not it matches the recognized wood grain image. When the user authentication procedure is completed, the user authentication server 400 may transmit an authentication result to the user authentication terminal 200. Here, the user authentication server 400 may be implemented as a computer that can access a server or a terminal in a remote place through the network 300. Here, the computer may include, for example, a notebook, a desktop, a laptop, and the like.

FIG. 2 is a diagram illustrating a user authentication server illustrated in FIG. 1, FIG. 3 is a diagram illustrating a user authentication object and a feature point extraction method illustrated in FIG. 1, and FIG. 4 is a user illustrated in FIG. 1. A diagram for describing an embodiment of extracting feature points from an authentication object.

Referring to FIG. 2, the user authentication server 400 may include a storage unit 410, a communication unit 430, and a control unit 450.

A server (not shown) operating in conjunction with the user authentication server 400 according to an embodiment of the present invention may install or open a user authentication application, a program, a web page, and the like. In addition, the user authentication program may be driven in the credit check terminal 100 using a script executed in a web browser. Here, the web browser is a program that enables the use of the World Wide Web (WWW) service, and means a program that receives and displays hypertext described in HTML (hyper text mark-up language), for example, an Explorer. , Chrome and the like. In addition, an application means an application on a terminal, and includes, for example, an app running on a mobile terminal (smartphone). The app can be downloaded and installed from the mobile application market, a virtual marketplace for freely buying and selling mobile content.

In this case, the network 300 connection means that the user authentication terminal 200 and the user authentication server 400 is connected to each other to enable communication, and generating the network 300 connection is the user authentication terminal 200 and the user This means creating a communication object at a communication contact for communication between the authentication servers 400. The user authentication terminal 200 and the user authentication server 400 may exchange data with each other through a communication object.

Referring to FIG. 2, the storage unit 410 may map and store the reference grain image extracted from the wood grain of the tree 110 inserted into the user authentication object 100 with the user authentication object 100. have. Here, the tree 110 inserted into the user authentication object 100 may be a raw wood sheet obtained by cutting and cutting solid wood. That is, the solid wood is cut to a predetermined size and processed into wood, the processed wood is boiled in steam, dried to 20 to 25% moisture content, dried wood is cut in a slice method, 0.1 to 0.8mm It can be molded into a wood sheet having a thickness. Also, the reference wood grain image may be mapped and stored together with identification data such as a serial number of the user authentication object 100. The storage unit 410 may be specifically implemented as a computer readable storage medium. Examples of such a computer readable storage medium may include magnetic media such as hard disks, floppy disks, and magnetic tape, such as CD-ROM, DVD, and the like. Hardware devices specially configured to store and execute program instructions, such as optical media, magneto-optical media, such as floptical disks, and flash memory. have.

The communication unit 430 may receive user authentication data including a recognition wood grain image of the user authentication object 100 recognized through the user authentication terminal 200 and identification data identifying the user authentication object 100. The communication unit 430 may include a communication module for exchanging data with the user authentication terminal 200 through the network 300.

Here, the identification data identifying the user authentication object 100 may include text or image based data for identifying the user authentication object 100. In addition, the identification data identifying the user authentication object 100 may be data stored in an IC chip, an RFID chip, or an NFC chip included in the user authentication object 100. The identification data may be unique data identifying an user such as a social security number or an encrypted key. In addition, the user authentication object may be any one of a passport, a credit card, a check card, a chip, an information security document, and a resident registration card. Here, the storage unit 410, at least one of the origin, felling date, manufacturing date, slice thickness or manufacturer of the tree 110 inserted into the user authentication object 100, stored in the IC chip of the user authentication object 100 To store the meta data of the user authentication object 100 by mapping the meta data stored in the IC chip and the meta data stored in the user authentication server to authenticate the user. Can be. Accordingly, the user authentication server 400 may double the authentication security using the wood grain image and metadata.

The controller 450 may authenticate the user by comparing the above-described reference wood grain image and the recognized wood grain image. In addition, according to an embodiment, when the reference wood grain image and the recognition wood grain image are the same, the control unit 450 compares the identification data mapped and stored on the user authentication server 400 with the identification data received from the user authentication terminal 200. When the stored identification data and the received identification data are the same, the user can be authenticated as a party user. The controller 450 may be implemented by a computing device including a microprocessor.

FIG. 3 is a diagram for describing a user authentication object and a tree as an authentication means included in FIG. 1. 3A illustrates an example of a user authentication object 100 according to an embodiment of the present invention. The user authentication object 100 may include a tree 110 and an identification object 130 as authentication means. 3B shows a tree 110 embedded or exterior as an authentication means in the user authentication object 100. According to FIG. 3B, the tree 110 has a wood grain image generated by native wood grain, and the wood grain image appears differently according to the wood 110. Accordingly, the tree 110 can function as an authentication means through a grained image with discriminating power. Specifically, the wood grain image may have discriminating power by the shape and position of each pattern forming the wood grain included in the tree 110. In addition, the wood grain image may have discriminating power by the intervals d1 to d3 between the respective patterns. In addition, various wood grain images may be extracted according to positions even in the same tree 110. For example, in the tree 110 of FIG. 3B, the wood grain image extracted near B and the wood grain image extracted near D are different from each other.

FIG. 4 is a diagram for describing an embodiment of extracting a feature point from the user authentication object illustrated in FIG. 1. A feature point extraction method may be used as a method for determining whether the reference wood grain image and the recognized wood grain image are equal to each other. These feature points can be extracted based on yaw or iron in the wood grain image. 4 exemplarily shows feature point extraction based on a pattern of iron, and each of these feature points may be expressed as two-dimensional coordinates (xi, yi). I is a number for identifying each feature point, and (xi, yi) is a coordinate corresponding to the position of the i-th feature point. Algorithms for extracting these feature points include image key point extraction algorithm, gradient based feature point extraction algorithm, edge point extraction algorithm, scale-invariant feature transform (SIFT) based feature point extraction algorithm, SURF (Speeded Up Robust Features) based feature point extraction algorithm, and specific methods for implementing such algorithms are obvious to those skilled in the art, and thus will not be described in detail here.

2 to 4 are not described about the user authentication method is the same as described above with respect to the user authentication method described above in FIG.

5 is a diagram illustrating a process of transmitting and receiving data between components included in the user authentication system using the wood grain image of FIG. 1 according to an exemplary embodiment of the present invention. Hereinafter, an example of a process of transmitting and receiving a signal according to an embodiment of the present application will be described with reference to FIG. 5, but the present disclosure is not limited to the above embodiment, and according to various embodiments described above with reference to FIG. 5. It is apparent to those skilled in the art that the process of transmitting and receiving illustrated data may be changed.

Referring to FIG. 5, the user authentication server 400 maps and stores the reference wood grain image inserted into the user authentication object 100 with the user authentication object 100 (S5100) and at least one including an IC chip. Meta data and identification data of the identification object 130 is mapped with the user authentication object 100 and stored (S5200).

Then, when the user authentication terminal 200 reads the user authentication object 100 (S5300), the metadata and identification data of at least one identification object 130 including the recognition wood grain image and the IC chip card are loaded. (S5400).

In addition, the user authentication terminal 200 transmits the loaded recognition wood grain data, the metadata of the identification object 130 and the identification data to the user authentication server 400 (S5500).

Accordingly, the user authentication server 400 extracts a feature point of the wood grain image (S5600), and when at least one of the wood grain image, metadata, and identification data is the same as the pre-stored wood grain image, metadata, and identification data (S5700). The authentication data may be transmitted to the user authentication terminal 200 (S5900), and the user authentication terminal 200 may output the authentication data (S5910). Alternatively, when at least one of the wood grain image, metadata and identification data is not the same as the pre-stored wood grain image, metadata and identification data, the user authentication server 400 transmits the non-authentication data to the user authentication terminal 100. Thus, the non-authentication data may be output from the user authentication terminal 100 (S58O0). Here, the same is not only a case of being completely identical physically, but also a case where the similarity between the comparison targets is more than a predetermined threshold and substantially the same.

The order between the above-described steps S5100 to S5910 is merely an example and the present invention is not limited thereto. That is, the order between the above-described steps (S5100 ~ S5910) may be changed mutually, some of the steps may be executed or deleted at the same time.

Such matters not described with reference to the user authentication method of FIG. 5 may be easily inferred from the same or described contents with respect to the user authentication method described above with reference to FIGS. 1 to 4, and thus descriptions thereof will be omitted.

The user authentication server maps and stores the reference wood grain image extracted from the wood grain of the tree 110 inserted into the user authentication object with the user authentication object (S6100).

Thereafter, the user authentication server receives user authentication data including a recognition wood grain image of the user authentication object recognized through the user authentication terminal and identification data identifying the user authentication object (S6200). In this case, when the user authentication terminal 200 is a mobile terminal that acquires and stores the recognition wood grain image, the user authentication server 400 receives an occurrence of an authentication request event using the recognition wood grain image from the user authentication terminal 200. can do.

Finally, the user authentication server authenticates the user by comparing the reference wood grain image and the recognized wood grain image (S6300). In this case, when the authentication request event described above occurs, the user authentication server 400 compares the reference wood grain image and the recognition wood grain image. As a result, when the reference wood grain image and the recognition wood grain image are the same, the user authentication terminal 200 is determined. User authentication can be performed by authenticating.

Such matters not described with reference to the user authentication method of FIG. 6 may be easily inferred from the same or described contents with respect to the user authentication method described above with reference to FIGS. 1 to 5, and thus descriptions thereof will be omitted.

The user authentication method according to an embodiment described with reference to FIG. 6 may be implemented in the form of a recording medium including instructions executable by a computer, such as an application or a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

The user authentication method according to an embodiment of the present invention described above may be executed by an application basically installed in the terminal (which may include a program included in a platform or an operating system basically mounted in the terminal), It may be executed by an application (ie, a program) installed directly on the master terminal through an application providing server such as an application store server, an application, or a web server related to the corresponding service. In this sense, the user authentication method according to an embodiment of the present invention described above is implemented as an application (that is, a program) that is basically installed in a terminal or directly installed by a user, and is applied to a computer-readable recording medium such as a terminal. Can be recorded.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Claims

In the user authentication method using wood grain executed in the user authentication device,

Mapping and storing a reference wood grain image extracted from a wood grain inserted into a user authentication object with the user authentication object;

Receiving user authentication data including a recognition wood grain image of the user authentication object recognized through a user authentication terminal from the user authentication terminal; And

And comparing the reference wood grain image with the recognized wood grain image to authenticate a user.

User authentication using wood grain images.
The method of claim 1,

The wood inserted into the user authentication object is a wood sheet obtained by cutting and cutting wood.

User authentication using wood grain images.
The method of claim 1,

The user authentication data further includes identification data identifying the user authentication object,

Mapping identification data of the user authentication object with the user authentication object and storing the identification data;

When the similarity between the reference wood grain image and the recognized wood grain image is equal to or greater than a predetermined threshold value, the identification data stored in the user authentication device and mapped to the reference wood grain image and the identification data received from the user authentication terminal are stored. Comparing; And

Authenticating the user as a party user when the stored identification data and the received identification data are the same

Containing more

User authentication using wood grain images.
The method of claim 1,

The step of authenticating the user by comparing the reference wood grain image and the recognition wood grain image,

Extracting feature points based on yaw or iron of the reference wood grain image and the recognized wood grain image; And

Comparing the extracted feature points;

Containing

User authentication using wood grain images.
The method of claim 4, wherein

The feature points include key point extraction algorithm, gradient based feature extraction algorithm, edge point extraction algorithm, scale-invariant feature transform (SIFT) based feature extraction algorithm, SURF (Speeded Up Robust Features) Extracted by any one of the base feature extraction algorithm

User authentication using wood grain images.
The method of claim 3, wherein

Identification data identifying the user authentication object,

Text or image based data identifying the user authentication object; And

Data stored in the IC chip, RFID chip or NFC chip included in the user authentication object

User authentication using wood grain images.
The method of claim 1,

The user authentication object is one of a passport, a credit card, a check card, a chip, an information security document, a resident registration card,

User authentication using wood grain images.
The method of claim 1,

The user authentication terminal is a mobile terminal for obtaining and storing the recognition wood grain image,

When the authentication request event using the recognition wood grain image occurs from the mobile terminal, the user authentication device compares the stored reference wood grain image and the recognition wood grain image,

If the similarity between the reference wood grain image and the recognition wood grain image is greater than a predetermined threshold as a result of the comparison, to authenticate the mobile terminal,

User authentication using wood grain images.
The method of claim 1,

Mapping metadata of at least one of an origin, a logging date, a manufacturing date, a slice thickness, or a manufacturer of a tree inserted into the user authentication object with the user authentication object; And

When authenticating the user, authenticating the user by comparing the metadata recognized from the user authentication object with the metadata stored in the user authentication device through the user authentication terminal;

To further include,

User authentication using wood grain images.
A user authentication device that performs user authentication using wood grain,

A storage medium which maps and stores a reference wood grain image extracted from wood grain inserted into a user authentication object with the user authentication object;

A communication unit configured to receive user authentication data including a recognition wood grain image of the user authentication object recognized through a user authentication terminal from the user authentication terminal;

And a controller configured to authenticate the user by comparing the reference wood grain image with the recognized wood grain image.

User Authentication Device.
The method of claim 10,

The wood inserted into the user authentication object is a wood sheet obtained by cutting and cutting wood.

User Authentication Device.
The method of claim 10,

The user authentication data further includes identification data identifying the user authentication object,

The storage medium maps and stores identification data of the user authentication object to the user authentication object.

When the reference wood grain image and the recognition wood grain image are the same, the controller compares the identification data mapped and stored in the user authentication device with the identification data received from the user authentication terminal, and the stored identification data and the received data. If the similarity between the identified identification data is above a predetermined threshold, the user is authenticated as a party user.

User Authentication Device.
The method of claim 10,

The controller extracts a feature point based on yaw or iron of the reference wood grain image and the recognized wood grain image, and compares the extracted feature point to compare the reference wood grain image and the recognition wood grain image.

User Authentication Device.
The method of claim 13,

The feature points include key point extraction algorithm, gradient based feature extraction algorithm, edge point extraction algorithm, scale-invariant feature transform (SIFT) based feature extraction algorithm, SURF (Speeded Up Robust Features) Extracted by any one of the base feature extraction algorithm

User Authentication Device.
The method of claim 12,

Identification data identifying the user authentication object,

Text or image based data identifying the user authentication object; And

Data stored in the IC chip, RFID chip or NFC chip included in the user authentication object

User Authentication Device.
The method of claim 10,

The user authentication object is any one of a passport, a credit card, a check card, a chip, an information security document, and a resident registration card.

User Authentication Device.
The method of claim 10,

The user authentication terminal is a mobile terminal for obtaining and storing the recognition wood grain image,

When the authentication request event using the recognition wood grain image occurs from the mobile terminal, the controller compares the stored reference wood grain image and the recognition wood grain image, and when the comparison result shows that the reference wood grain image and the recognition wood grain image are the same. To authenticate the mobile terminal

User Authentication Device.
The method of claim 10,

The storage medium may store at least one metadata of the origin, felling date, manufacture date, slice thickness, or manufacturer of a tree inserted into the user authentication object by mapping the metadata with the user authentication object.

When the user authenticates the user, the controller compares the metadata recognized from the user authentication object with the metadata stored in the user authentication device through the user authentication terminal to authenticate the user.

User Authentication Device.
An authentication method using wood grain, which is performed at a user authentication terminal in association with a user authentication server executing a user authentication method using wood grain,

Obtaining a recognition wood grain image from wood grain inserted into a user authentication object;

The recognition wood grain image is transmitted to the user authentication server, and the user authentication server maps and stores the reference wood grain image extracted from the wood grain inserted into the user authentication object with the user authentication object. Comparing the recognized wood grain images to authenticate a user;

Authentication method using wood grain.
20. A computer-readable recording medium having recorded thereon a program comprising instructions for performing each step according to the method of any one of claims 1 to 9 and 19.