KR100899638B1 - Method for providing service using device identity information, system thereof and computer-readable medium recoded the program for executing the method - Google Patents

Method for providing service using device identity information, system thereof and computer-readable medium recoded the program for executing the method Download PDF

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Publication number
KR100899638B1
KR100899638B1 KR1020080126848A KR20080126848A KR100899638B1 KR 100899638 B1 KR100899638 B1 KR 100899638B1 KR 1020080126848 A KR1020080126848 A KR 1020080126848A KR 20080126848 A KR20080126848 A KR 20080126848A KR 100899638 B1 KR100899638 B1 KR 100899638B1
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South Korea
Prior art keywords
portable memory
memory device
identification information
service
user
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KR1020080126848A
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Korean (ko)
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김준완
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(주)이바이언
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/604—Tools and structures for managing or administering access control systems

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  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Bioethics (AREA)
  • General Health & Medical Sciences (AREA)
  • Storage Device Security (AREA)

Abstract

The present invention executes a program stored in a portable memory device in a terminal, so that a service user can use the service more conveniently, and secures security of service use by using device identification information and user identification information of the portable memory device. In order to increase convenience and increase convenience of a service user by using an approved portable memory device. To this end, the present invention is a device authentication step for transmitting the device identification information stored in the portable memory device to the approval server, and if the device identification information is registered in the approval server, as a result of the transmission of the device authentication step, the approval server A user authentication step of receiving and transmitting the user identification information requested by the user, an issuing step of receiving and storing the authorization code generated by the approval server when the user identification information is confirmed by the approval server, and the stored device identification. Provided is a method of providing a service using device identification information including a step of transmitting information and an authorization code to an approval server and using a service, and a computer readable recording medium recording the device and a program for executing each step by a computer.

Figure R1020080126848

Portable memory device, record carrier, approval code, device identification, user identification

Description

Method for Providing Service Using Device Identity Information, System Thereof and Computer-Readable Medium Recoded The Program for Executing the Method}

The present invention relates to providing an Internet service using a portable memory device, and more particularly, using device identification information for issuing an authorization code to a portable memory device using device identification information and user identification information of the user. The present invention relates to a service providing method, an apparatus, and a computer readable recording medium recording the program.

In addition, the present invention provides a service providing method using the device identification information to provide a service conveniently and securely using a program stored in the portable memory device with the authorization code using the device identification information, and the computer and computer-readable recording the program It relates to a recording medium.

In recent years, according to the popularization of computers and the development of the Internet, programs to be installed for use by companies or organizations to promote their contents or services are stored in a storage medium such as CD-ROM or DVD-ROM, and distributed to members or customers. There are many cases.

However, the data stored in CD-ROM, DVD-ROM, etc. cannot be changed or deleted, and even when the user installs and uses a program for using the service on the terminal, it is a service having the same contents regardless of who the user is or if it does not There is a difficulty in providing a service associated with a specific user, such as using a service through a separate authentication means.

On the other hand, portable memory devices that are easily connected to computers such as PCs and laptops as well as portable digital devices such as cameras, sound players, video players, etc. are used to store data. Provides an interface for reading by a flash memory having a USB (Universal Serial Bus) interface, CF (Compact Flash), SD (Secure Digital), xD (extreme Digital), There are various forms such as MS (Memory Stick) and smart card.

However, in most cases, when a portable memory device is connected to a computer, data stored in the portable memory device is used in a terminal, and is used as a device for storing and moving data.

In addition, in order to use the service that requires identity verification, a certificate issued in advance may be stored in a portable memory device, and the portable memory device may be connected to a computer and used for identity verification. There is a problem that requires authentication through the deterioration of user convenience. In addition, there is a problem that the use efficiency of the portable memory device is reduced by using only the stored certificate regardless of the characteristics of the portable memory device.

According to the present invention, a service memory is stored in a portable memory device by storing a program required for using a service in a portable memory device, and storing the authorization code generated by using the device identification information of the portable memory device together with the portable memory device. The present invention provides a service providing method using device identification information that enables a service to be conveniently used in a terminal to which a device can be connected, and a device and a computer readable recording medium storing the program.

In addition, in the present invention, by using the device identification information of the portable memory device for issuance of the approval code for using the service, only a specific user who has distributed the portable memory device gets an opportunity to use the service through the approval server. The present invention provides a service providing method using device identification information that increases security of service use, and a computer readable recording medium recording the device and the program thereof.

In addition, the present invention by using the device identification information of the portable memory device for issuance of the authorization code for the use of the service, it is an instrument that can lower the security level of personal information to be used in the subsequent user authentication step, security of service use The present invention provides a service providing method using device identification information which increases the convenience of service while guaranteeing the serviceability, and a computer readable recording medium recording the device and the program thereof.

In addition, the present invention is to provide a service providing method using the device identification information to use the service without additional authentication using the approved portable memory device, the apparatus and a computer-readable recording medium recording the program.

The present invention also provides a service providing method using the device identification information, device and program thereof by issuing an approval code using the device identification information to block the use of the service through the duplication of the approval code, thereby increasing the security of service use. To provide a computer readable recording medium having recorded thereon.

Service providing method using the device identification information of the present invention for solving the above problems, the device for confirming that the device identification information stored in the portable memory device is registered in the approval server through the terminal connected to the portable memory device; If the received device identification information is registered in the approval server as a result of the authentication step and the device authentication step, checking whether the service is available by receiving user identification information through a terminal to which the portable memory device is connected. And a user authentication step and, if a service is available as a result of the user authentication step, issuing step of generating an authorization code for use of the service and transmitting it to the portable memory device.

In addition, the device for providing a service using the device identification information of the present invention, the device authentication unit for receiving the device identification information stored in the portable memory device through the terminal connected to the portable memory device and confirms whether it is registered in the approval server, and When the device identification information stored in the portable memory device is registered in the approval server, a user authentication unit for receiving a user identification information through a terminal connected to the portable memory device to check whether the service is available, and the user authentication unit. If it is confirmed that the service is available through, characterized in that it comprises an authorization code generation unit for generating an authorization code for use of the service.

In addition, the computer-readable recording medium of the present invention, the first step of transmitting the device identification information stored in the portable memory device to the approval server, the transmission result of the first step, the device identification information is registered in the approval server And a second step of receiving and transmitting user identification information requested by the approval server, and receiving the approval code generated by the approval server when the user identification information is confirmed by the approval server. The program for executing the third step of storing in the program is recorded.

The program of the present invention is executed inside the terminal through the portable memory device interface of the terminal, and may be a web application executed in the web browser of the terminal as well as application software executed in the terminal independently of the program.

In addition, the device identification information of the present invention is to store and use the manufacturer ID (Vendor ID), product ID (Product ID), serial number (Serial Number) of the product in the portable memory device in which the program is stored, the approval server Will be the only non-duplicate value in the array.

In addition, the user identification information of the present invention is the personal information of the user who is provided with the service using the portable memory device, the student's school number, member's serial number, personal telephone number, part of the resident registration number, etc. registered in advance in the approval server. The value can be used to identify the user. When the user wants to use the service for a user who is not registered in the approval server, a process of registering by the user may be provided.

According to the present invention configured as described above, by storing a program necessary to use the service in a portable memory device, a service user can use the service more conveniently in a terminal to which the portable memory device can be connected.

In addition, in the present invention, by using the device identification information of the portable memory device for issuance of the approval code for using the service, only a specific user who has distributed the portable memory device gets an opportunity to use the service through the approval server. This increases the security of service use.

In addition, the present invention by using the device identification information of the portable memory device for issuance of the authorization code for the use of the service, it is an instrument that can lower the security level of personal information to be used in the subsequent user authentication step, security of service use While guaranteeing sex, it is effective to increase convenience of service use.

In addition, the present invention can omit the authentication of the user when using the service by using the approved portable memory device, it is not necessary to perform the authentication of the user every time to use the service to increase the user's convenience of service use There is.

In addition, the present invention has an effect of increasing the security of the service use by issuing the approval code using the device identification information, blocking the use of the service through the duplication of the approval code.

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

Figure 1 shows the overall system configuration for explaining a preferred embodiment of the present invention.

First, the portable memory device 1 includes a program storage unit 13 having a program for carrying out the present invention, a device identification information storage unit 11 storing device identification information, and a portable memory device 1 with a terminal ( 2) includes an approval code storage unit 12 for storing the approval code issued from the approval server 3 by using the device identification information of the portable memory device 1 when used in connection with.

In addition, the portable memory device 1 mainly includes a non-volatile memory and provides an interface for a computer to read data stored in the memory. The portable memory device 1 may include a flash memory having a USB (Universal Serial Bus) interface, and There are various forms such as CF (Compact Flash), SD (Secure Digital), xD (extreme Digital), MS (Memory Stick), and smart card connected through a card reader.

In addition, the nonvolatile memory of the portable memory device may store a vendor ID, a product ID, and a serial number of a product therein, so that the nonvolatile memory is manufactured as a portable memory device. Later, device identification information unique to the portable memory device may be input.

In addition, the portable memory device 1 is connected to the terminal 2 through various interfaces, which are connected to the authorization server 3 or the service providing server 4 via a communication network. In FIG. 1, the service providing server 4 connected to the approval server 3 means that the approval server 3 needs to be confirmed for service provision, and the service providing server 4 may be directly connected to the communication network.

Meanwhile, the approval server 3 transmits the device authentication unit 31, the user authentication unit 32, the approval code generation unit 33, the database 34, the device registration unit 35, the user registration unit 36, and the approval code. The unit 37 and the approval code receiving unit 38 is included.

The device authentication unit 31 checks whether the device identification information transmitted to the approval server 3 is registered in the database 34, and the user authentication unit 32 is the terminal 2 to which the portable memory device 1 is connected. Check whether the user identification information inputted from and transmitted to the approval server (3) is registered in the database (34).

In addition, the authorization code generation unit 33 generates an authorization code to be stored in the portable memory device 1 of the user in which both the device identification information and the user identification information are confirmed, and the code generation function and the basis used in the authorization code generation process. The value is stored in the database 34 in association with the device identification information or the user identification information, or the generated authorization code is stored in the database 34 in association with the device identification information or the user identification information.

In addition, the device registration unit 35 registers the device identification information stored in the portable memory device 1 in the database 34 of the approval server 3 before the portable memory device 1 is distributed. When the database 34 of the authorization server 3 is duplicated or absent, the database 34 may be assigned a number not duplicated and stored in the portable memory device 1.

In addition, the user registration unit 36 registers the user's personal information as the user identification information in the database 34 before confirming the user identification information in the terminal 2 to which the portable memory device 1 is connected.

In addition, the authorization code transmission unit 37 transmits the authorization code generated by the authorization code generation unit 33 to the portable memory device 1, the authorization code receiving unit 38 is stored in the approval code approved portable memory When the device 1 is connected to the terminal 2 to use the service, the program executed in the terminal 2 receives the approval code read from the portable memory device 1 and transmitted, and receives the received approval code. Is compared with the authorization code generated or stored in the authorization server.

Issuance of the authorization code using the portable memory device 1 will be described later with reference to FIGS. 3 and 5, and the use of the service through the authorization code issued using the device identification information will be described later with reference to FIGS. 4 and 6, respectively. This will be described.

2 is a flowchart showing a process of registering device identification information with the approval server 3 before distributing the portable memory device 1 in the preferred embodiment according to the present invention.

In general, the manufacturer of the portable memory device 1 stores and sells information such as a manufacturer ID, a product ID, a serial number, and the like in the portable memory device 1. In this case, the above information can be used as it is as device identification information. If not, a number that is not duplicated in the database 34 may be assigned and input as device identification information to the portable memory device 1 (S10). This value is used as the device identification information of the portable memory device 1.

In addition, the device identification information stored in the portable memory device 1 is input to the database 34 of the approval server 3 before the portable memory device 1 is distributed, and the device authentication step (S115) will be described later with reference to FIG. 3. Register as the device identification information to be used in step (S20). The device identification information registered in the approval server 3 may be subjected to a procedure for checking whether there is a duplicate value in the registration process.

Subsequently, a program for using a service is mounted on the portable memory device 1 (S30) and distributed to the user. The program for using the service will be described later with reference to FIG. 6.

As such, although it is not shown in FIG. 2 in the process of registering before distributing the portable memory device 1, the user identification information required for the user to receive the authorization code is also registered. The portable is distributed to the user regardless of the execution order. This may be performed before inputting and confirming user identification information in the terminal 2 to which the memory device 1 is connected.

Hereinafter, a process of issuing an approval code in a preferred embodiment according to the present invention will be described with reference to FIGS. 3 and 5.

3 is a diagram illustrating a process of issuing an approval code in a preferred embodiment according to the present invention.

5 illustrates a window for inputting user identification information in a preferred embodiment according to the present invention.

When the user who has distributed the portable memory device 1 first connects the portable memory device 1 to the terminal 2 for service use (S100), the authorization code is not stored in the portable memory device 1 yet. Not in condition.

When the portable memory device 1 is connected to the terminal 2, the program stored in the portable memory device 1 provided to be executed in the terminal 2 is executed in the terminal 2 (S105). Check if approval code is stored in (1).

The program of the portable memory device 1 may be directly executed by the terminal, or may be automatically executed when the portable memory device 1 is connected to the terminal 2 by using the automatic execution function of the terminal 2. .

If the approval code is not stored in the portable memory device 1, the program loaded in the portable memory device 1 and executed in the terminal 2 requests issuance of the approval code. The program first reads the device identification information stored in the portable memory device 1 (S110) and transmits it to the approval server 3 (S112).

Subsequently, the approval server 3 checks whether the transmitted device identification information is registered in the database 34 of the approval server 3 (S115). If the device identification information is not registered, it is determined that the user cannot use the service, and the program for issuing the approval code ends.

Performing a device authentication step of confirming whether or not device identification information is registered in the approval server 3, the service providing server (4) through the approval server (3) only the user who has been distributed a specific portable memory device (1) By gaining the opportunity to access, it becomes a primary security device and an opportunity to lower the security level of personal information to be used in the subsequent user authentication step.

Subsequently, if the received device identification information is registered in the approval server 3, the approval server 3 is connected to the user identification information input window 100 shown in FIG. 5 to input personal information for user confirmation. 2) to provide (S120). User identification information that requires input is available as long as it can identify the user, such as name, social security number or part thereof, address, mobile phone number, member serial number, and student number.

When the user inputs the information requested by the user identification information input window 100 through the terminal 2 (S122), the approval server 3 receives the user identification information thus input (S125) and the database 34 It is compared with the user information of (S127). If the user is not registered in the database 34, the user is determined to be unable to use the service and ends the program for issuing the approval code.

In the device authentication step performed before the user authentication step, the service user is limited to the user who has distributed the registered portable memory device 1, so that the user identification information to be used in the user authentication step is less risky and has a low importance. Information becomes available.

After the device authentication and user authentication as described above, the device identification information and the user identification information confirmed in the device authentication step and the user authentication step is stored in the database 34 and generates an authorization code. This approval code is a value that is checked by the approval server 3 for approval of the user's use of the service when the user wishes to use the service by connecting the portable memory device 1 to the terminal 2 later.

In addition, the basic value used to generate the authorization code is not only the device identification information and the user identification information identified in the device authentication step and the user authentication step, but also other user's personal information, time information, and approval server information. , Random data using a random number table, or the like may be used.

The basic value used for generating the authorization code and the authorization code generation function are stored in the authorization server 3, and when the device identification information and the authorization code are received for the user's service use approval later, they correspond to the received device identification information. The authorization code is regenerated and compared using the base value and the authorization code generation function.

A hash function such as MD5 or SHA-1 can be used to generate this authorization code. If the base value for encryption is different, the same result cannot be obtained, and the base value is restored from the result of the hash. It is extremely difficult to do.

When the approval code generated in this way is transmitted to the terminal 2, the issuance of the approval code is completed while storing the approval code in the portable memory device 1 connected to the terminal 2 for the first time to issue the approval code.

Set a password for the use of the authorization code when storing the authorization code in the portable memory device 1, and when the authorization code is used later, the password is entered so that the portable memory device 1 in which the authorization code is stored may be lost. It can also be made unavailable to users.

4 is a flowchart illustrating a process of using a service with an authorization code issued by using device identification information in a preferred embodiment according to the present invention.

6 is a block diagram of a program executed for service use in the preferred embodiment according to the present invention.

As described with reference to FIG. 3, after the approval code is stored in the portable memory device 1, the portable memory device 1 is connected to the terminal 2 so that the program stored in the portable memory device 1 is stored in the terminal 2. When executed, it is checked whether the authorization code is stored in the portable memory device 1. The program of the portable memory device 1 may be directly executed by the terminal, or may be automatically executed when the portable memory device 1 is connected to the terminal 2 by using the automatic execution function of the terminal 2. .

As shown in the program configuration of Figure 6, the service program 100 for using the service is a shortcut linking the service provider 210, the homepage or related sites to execute the service provided through the service providing server (4) Providing unit 220, the promotional material providing unit 230 showing the promotional material related to the service, the authorization code validity period confirmation unit 240 to confirm this if the validity period of the issued approval code is set, the execution of the service It may be configured as a service setting unit 250 for setting the environment.

When the portable memory device 1 storing the authorization code is connected to the terminal 2, a program mounted on the portable memory device 1 and executed in the terminal 2 provides a built-in service. The program is executed by the terminal 2 as read from the portable memory device 1 and executed inside the terminal 2, and may be a web application executed in the web browser of the terminal as well as application software executed in the terminal independently of the program. It may be.

The service embedded in the program may be executed by the terminal 2 itself irrespective of the service providing server 4, and, like the service providing unit 210 of the service program 200, from the service providing server 4. There may be times when you need to be provided.

When a service is to be provided from the service providing server 4, a program executed in the terminal 2 reads the device identification information and the authorization code stored in the portable memory device 1, and transmits them to the approval server 3, and If the transmitted device identification information is verified by the transmitted authorization code, it is possible to receive a service from the service providing server 4.

When the service program 200 provides alumni association-related services, the authorization code may be used when using a service requiring identification of a user, such as issuing an Internet certificate.

Before the authorization code is transmitted to the authorization server 3, if a password is set in the authorization code as described with reference to FIG. 3, it is also possible to enter a password for the use of the authorization code.

The verification by the received approval code regenerates the approval code in the approval server 3 according to the same input and method as the conditions for generating the approval code corresponding to the received device identification information, and receives this value. Compare to the code. It is also possible to store the authorization code originally generated and compare this value with the authorization code received.

If the device identification information received from the approval server 3 is verified by the received approval code that the authentication server 3 is authenticated, the approval server 3 provides the service requested by the terminal 2 to the service providing server. Approved by (4) to provide (S222), to be stored in the portable memory device (1) to provide a service requested by the program running on the terminal (2) (S225).

The service providing server 4 is a server having a service requested by the program executed in the terminal 2, and may provide a service to the terminal 2 through a communication network. Therefore, the service providing server 4 is not to be seen otherwise because it is integrated with the authorization server (3).

In addition, although not shown in the drawings, in case of losing the portable memory device 1 that issued the approval code, the approval associated with the corresponding user identification information or device identification information through the loss report of the portable memory device 1 The code may no longer be used, or a new portable memory device 1 may be distributed to provide approval.

As such, using the portable memory device 1 that has undergone the first approval code issuing procedure described with reference to FIGS. 3 and 5, the service providing using the device identification information for more convenient use of the service is completed.

In addition, the preferred embodiment of the present invention for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications, changes, etc. are the following patents It should be regarded as belonging to the claims.

1 is a block diagram of a preferred embodiment of the present invention.

2 is a flow chart of a registration process before distribution of a portable memory device in a preferred embodiment of the present invention.

3 is a flow chart for issuing an authorization code in a preferred embodiment according to the present invention.

4 is a flow chart of using a service in a preferred embodiment according to the present invention.

5 is a window for inputting user identification information in a preferred embodiment according to the present invention.

6 is a diagram illustrating a program executed for service use in a preferred embodiment according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: portable memory device 2: terminal

3: Authorization server 4: Service provision server

11: device identification information storage unit 12: approval code storage unit

13: program storage unit

31: device authentication unit 32: user authentication unit 33: authorization code generation unit

34: database 35: device register 36: user register

37: approval code transmitter 38: approval code receiver

100: user identification information input window 200: service program

210: service provider 220: shortcut provider

230: promotional material providing unit 240: approval code validity period confirmation unit

250: service setting unit

Claims (17)

To ensure that only users who have been distributed a particular portable memory device can be authorized by the authorization server, A registration step of registering device identification information unique to each portable memory device to an approval server before the portable memory device is distributed to a user; A device authentication step of confirming whether the portable memory device is distributed to a user and receiving the device identification information stored in the portable memory device through a terminal to which the portable memory device is connected and registered in the approval server; As a result of the device authentication step, if the received device identification information is registered in the approval server, the user authentication step of checking whether the user can use the service by receiving the user's personal information through the terminal connected to the portable memory device ; An issuing step of generating an approval code for using the service and transmitting it to the portable memory device when the service is available as a result of the user authentication step; When providing a service requiring identification of a user, the portable memory device receives information including at least the authorization code through a terminal connected thereto, and determines whether to provide a service using at least the authorization code to provide a service. Use step; Service providing method using a device identification information comprising a. delete The method according to claim 1, In the using step, receiving the information including at least the authorization code through the terminal connected to the portable memory device, Receiving the device identification information and the authorization code through the terminal connected to the portable memory device, In the use step, determining whether to provide a service using at least the authorization code, And regenerating the approval code using the stored base value and the code generation function in association with the received device identification information and comparing the received approval code with the received identification code. The method according to claim 1, Device identification information stored in the portable memory device, A service providing method using device identification information, characterized in that using at least the serial number of the portable memory device. delete The method according to claim 1, In the registration step, If there is no device identification information stored in the portable memory device, a service server providing method using the device identification information, characterized in that the grant to the unique value stored in the portable memory device device identification information. delete To ensure that only users who have been distributed a particular portable memory device can be authorized, A device registration unit that registers unique device identification information for each of the portable memory devices before the portable memory device is distributed to a user; A device authentication unit configured to check whether the device identification information is registered by receiving the device identification information stored in the portable memory device through a terminal connected to the portable memory device after the portable memory device is distributed to a user; A user authentication unit which checks whether the service is available by receiving the user's personal information through a terminal connected to the portable memory device when the device identification information stored in the portable memory device is registered; If it is confirmed that the service is available through the user authentication unit, the authorization code generation unit for generating an authorization code for the use of the service; An authorization code transmission unit for transmitting the generated authorization code to a terminal to which the portable memory device is connected; Including; When providing a service requiring identification of a user, the portable memory device receives information including at least the authorization code through a terminal connected thereto, and determines whether to provide a service using at least the authorization code to provide a service. A service providing device using device identification information, characterized in that to be made. delete delete The method according to claim 8, When the unique device identification information is registered for each portable memory device, If there is no device identification information previously stored in the portable memory device, A service providing device using device identification information, wherein a value which is not duplicated is assigned to the portable memory device, stored, and registered. delete delete delete The method according to claim 8, In the above, receiving information including at least the authorization code through the terminal connected to the portable memory device, Receiving the device identification information and the authorization code through the terminal connected to the portable memory device, In the above, determining whether to provide a service using at least the authorization code, And regenerating the approval code using the stored base value and the code generation function in association with the received device identification information, and comparing the received approval code with the received identification code. delete delete
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KR101107421B1 (en) * 2009-04-20 2012-01-19 황성민 System and Method for data retrieval of lost portable disk
KR101535806B1 (en) * 2010-07-26 2015-07-10 에스케이플래닛 주식회사 System for providing compatibility of application, apparatus and method for providing compatibility of application
KR20140043071A (en) * 2011-06-07 2014-04-08 주식회사 잉카인터넷 Authentication system and method for device attempting connection
KR101583698B1 (en) 2011-06-07 2016-01-08 주식회사 잉카인터넷 Authentication system and method for device attempting connection

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