KR20090002547A - Wireless identification tag based digital content authentication processing system and wireless identification tag based digital content authentication processing method and computer readable recording medium recording a program for realizing the same - Google Patents

Abstract

The present invention relates to a wireless identification tag-based digital content authentication processing system including a digital content processing device and an RFID tag, wherein the digital content processing device uses a random number to authenticate an authentication query for authenticating authenticity of digital content. An authentication query signal generation unit for generating a signal, an apparatus wireless communication unit for transmitting the authentication query signal to the RFID tag and receiving an authentication response signal generated corresponding to the authentication query signal from the RFID tag; And an authentication performing unit for authenticating authenticity of the digital content based on the authentication query signal and the authentication response signal, wherein the RFID tag is configured to authenticate the digital content based on the authentication query signal. An authentication response signal generator for generating an authentication response signal, and the digital Receiving a query signal for the authentication from the content processing apparatus, and relates to an identification tag is a wireless-based digital content authentication system comprising a tag wireless communication unit for transmitting a response signal for the authentication to the content to the digital processing unit.

According to the present invention, authentication is performed by using a random number in the authentication of digital content to prevent leakage of authentication information through communication monitoring between the RFID tag and the digital content processing device, and the authenticity of the RFID tag including the authentication information. Verification is possible based on responses to random numbers.

Description

Wireless identification tag-based digital content authentication processing system and wireless identification tag-based digital content authentication processing method, and a computer-readable recording medium recording a program for realizing the same. READABLE MEDIUM HAVING THEREON PROGRAM PERFORMING FUNCTION EMBODYING THE SAME}

1 is an exemplary block diagram of a wireless identification tag based digital content authentication processing system in accordance with the present invention.

2 is an exemplary flowchart of a method for processing wireless content tag based digital content authentication in accordance with the present invention.

3 is another exemplary flowchart of a method for processing wireless content tag based digital content authentication according to the present invention;

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

100: digital content processing device 110: authentication query signal generation unit

130: device wireless communication unit 150: authentication performing unit

170: device password storage 200: RFID tag

210: authentication response signal generation unit 230: tag wireless communication unit

250: tag password storage unit

The present invention relates to a wireless identification tag-based digital content authentication processing system and a wireless identification tag-based digital content authentication processing method and a computer-readable recording medium having recorded thereon a program for realizing the same. Authentication is performed using the random number to prevent leakage of authentication information through communication monitoring between the RFID tag and the digital content processing device, and the authenticity of the RFID tag including the authentication information can be verified based on the response to the random number. A wireless identification tag based digital content authentication processing system, a wireless identification tag based digital content authentication processing method, and a computer readable recording medium having recorded thereon a program for realizing the same.

A radio frequency identification (hereinafter referred to as "RFID") system refers to a system that processes information by identifying a tag in a thin flat form attached to an object in a contactless manner through a radio signal.

Such an RFID system consists of an antenna, a tag, also referred to as a transponder, and a transceiver, often integrated into a reader. Here, the reader uses radio frequency propagation to transmit a signal for activating the tag. When the tag is activated, the tag transmits data to the reader through the antenna.

That is, the tag stores information such as the contents of the article or the surrounding situation in the internal memory, and then reads and writes the information by an external read / write terminal, and confirms the contents of the information. An identification tag (hereinafter referred to as an RFID tag) that uses electromagnetic waves as a radio frequency (RF) as a means of doing so is used.

An RFID tag generally has an antenna connected to a memory device such as an integrated circuit and has a function of transmitting a corresponding signal in accordance with a read request signal from a reader.

In this case, it may be classified into an active RFID tag performing an operation through its own power supply or a passive RFID tag receiving power from a read request signal from a reader.

When the RFID system is applied, the RFID tag is attached to an object and the ID information of the RFID tag is identified by a non-contact method using wireless communication. For identification information, the use of electromagnetic or electrostatic coupling within the radio frequency in the electromagnetic spectrum region is integrated. To identify them.

Recently, due to the development of technologies such as standardization of RFID technology, a decrease in manufacturing cost, and an increase in reading distance, applications of RFID systems in the industry are gradually increasing.

However, such an RFID system has a weak point in security and cannot be used for authentication.

For example, the authentication of the software will be described as follows.

Software is generally stored and sold on a storage medium such as a CD. Such a storage medium such as a CD is a very suitable medium for storing digital signals, and the digital signal to be stored has the advantage that the signal quality is the same as that of the original even after repeated copies. However, the digital signal stored in the storage medium also has the disadvantage that anyone can easily copy and use the same recording medium. In other words, because the copied software has the same signal quality as the original, the weak point that is vulnerable to copyright infringement is being considered.

In order to prevent illegal copying of software stored in such a storage medium, a method of distorting a signal recorded on the storage medium or special marking on a storage area inaccessible to the general user may be used. However, such copy protection has a problem of using expensive special devices.

In addition, a technology for preventing illegal copying by configuring software to be executed only when a serial number or a password is input has been developed, but this method also has a disadvantage in that illegal generation of the serial number or password is possible.

Also, a method of adding a hardware copy protection device may be used. For example, connect a separate copy protection device that has the information necessary to run the software to a printer port, etc., and when the software is run, check the printer port, etc., to detect the presence or absence of the installation of the copy protection device, and to execute the software based thereon. That's the way.

However, the use of such a copy protection device increases the cost of selling software due to the addition of a copy protection device, and it is inconvenient to install a copy protection device in hardware, and the number of copy protection devices that can be installed on a computer is limited. Not efficient

In addition, it is possible to use the software after acquiring the certification through the purchase of the software after downloading the software using the Internet, as well as the case of selling the storage medium such as CD.

However, even in this case, there is a problem that it is possible to illegally copy and use the software. For example, it may be possible to illegally generate and use authentication information.

On the other hand, illegal copying is possible not only for such software but also for storage media such as DVDs, Blu-ray discs or HD-DVDs, for example, on which movie contents are recorded.

Hereinafter, in the specification of the present invention, data in the form of a digital file sold in a form recorded in a storage medium, such as a software program or multimedia content, or downloaded or downloaded through the Internet, is referred to as "digital content".

In addition, in the specification of the present invention, a device having a signal processing function for playing or executing such "digital content" is referred to as "digital content processing device".

The digital content processing apparatus may be, for example, a computer executing a software program, or may be a playback apparatus for playing multimedia content such as a movie stored in a storage medium such as a DVD. Or it may be a playback device that can store and reproduce digital content, such as a portable MP3 player.

That is, the term "digital content processing device" in the present specification means a device that includes a function of reading or storing digital content and a function of executing or playing digital content.

In order to protect the copyright holder of such digital content, there is a need for a method of preventing illegal copying and use of digital content inexpensively and simply and efficiently in a digital content processing device.

In particular, when the digital content is authenticated using RFID, the following problems may occur.

In the authentication of digital content, an RFID reader included in or connected to a digital content processing apparatus operates an RFID tag for authentication rather than reading information stored in the RFID tag.

However, when information recorded on an RFID tag is transmitted to an RFID reader, there is a possibility of undesired authentication related information leakage since it can be monitored by other RFID readers in the vicinity.

Therefore, especially when a specific RFID reader is linked to a specific RFID tag and used for authentication of digital content, such information leakage becomes a limiting factor that makes it difficult to apply the RFID system.

In addition, there is a disadvantage that it is difficult to authenticate the authenticity of the RFID tag.

That is, even if the RFID tag is maliciously changed or duplicated and used, the RFID reader or the digital content processing device connected thereto or including the RFID reader does not check it.

Therefore, due to these disadvantages, the application of the RFID system, especially for the authentication of digital content is limited.

An object of the present invention is to prevent the leakage of authentication information by monitoring the communication between the RFID tag and the digital content processing device by performing authentication using a random number in the authentication of digital content, and also about the authenticity of the RFID tag including the authentication information. The present invention provides a wireless identification tag based digital content authentication processing system and a wireless identification tag based digital content authentication processing method which can be verified based on a response to a random number.

Another object of the present invention is to provide a computer-readable recording medium having recorded thereon a program for realizing each step of the wireless identification tag based digital content authentication processing method.

In order to achieve the above technical problem, the present invention provides a wireless content tag-based digital content authentication processing system including a digital content processing device and an RFID tag, wherein the digital content processing device authenticates authenticity of digital content using a random number. An authentication query signal generation unit for generating an authentication query signal for transmitting the authentication query signal to the RFID tag and receiving an authentication response signal generated corresponding to the authentication query signal from the RFID tag; A device wireless communication unit and an authentication performing unit for authenticating authenticity of the digital content based on the authentication query signal and the authentication response signal, wherein the RFID tag includes the digital content on the basis of the authentication query signal. An authentication response generating the authentication response signal for authentication of And a tag wireless communication unit for receiving the authentication query signal from the digital content processing device and transmitting the authentication response signal to the digital content processing device. Provide a system.

In the wireless identification tag-based digital content authentication processing system according to the present invention, the authentication performing unit further comprises an authentication comparison signal generation unit for generating an authentication comparison signal for authentication based on the authentication query signal. An authentication comparison signal generation unit or the authentication response signal generation unit converts the authentication query signal into the authentication comparison signal or the authentication response signal using the same or corresponding conversion function, and the authentication performing unit performs the following steps: When the authentication response signal for authentication and the comparison signal for authentication are the same or corresponding, the digital content may be authenticated as true.

In addition, in the wireless identification tag-based digital content authentication processing system according to the present invention, the digital content processing apparatus further comprises a device password storage unit for storing a device authentication password which is a password for performing the authentication of the digital content, The authentication comparison signal generation unit is to generate the authentication comparison signal based on the device authentication password and the authentication query signal, wherein the RFID tag stores a tag authentication password, which is a password for authentication of the digital content. The apparatus may further include a tag password storage unit, and the authentication response signal generation unit may generate the authentication response signal based on the tag authentication password and the authentication query signal.

In the wireless identification tag-based digital content authentication processing system according to the present invention, the authentication response signal generation unit may generate the authentication response signal by irreversibly converting the tag authentication password and the authentication query signal. .

In addition, in the wireless identification tag-based digital content authentication processing system according to the present invention, the digital content processing apparatus further comprises a user input receiving unit for receiving a user input, the device password storage unit, through the user input receiving unit The device authentication password input may be stored.

In addition, in the wireless identification tag-based digital content authentication processing system according to the present invention, the device authentication password may be displayed on the recording medium or the RFID tag corresponding to the digital content.

In the wireless identification tag-based digital content authentication processing system according to the present invention, the device password storage unit may store the device authentication password received from an external device connected through a network.

In the wireless identification tag-based digital content authentication processing system according to the present invention, the device password storage unit may read and store the device authentication password from a recording medium storing the digital content.

In addition, in the wireless identification tag-based digital content authentication processing system according to the present invention, the tag password storage unit may store the tag authentication password unreadable by an external device.

In addition, in the wireless identification tag-based digital content authentication processing system according to the present invention, the device authentication password and the tag authentication password may be the same or correspond to each other.

In addition, the present invention is a wireless identification tag-based digital content authentication processing method in a digital content processing device in a wireless content tag-based digital content authentication processing system including a digital content processing device and an RFID tag, (a) authentication of digital content; Generating an authentication query signal to be transmitted to the RFID tag by using a random number; (b) transmitting the authentication query signal to the RFID tag; and (c) the authentication signal from the RFID tag. Receiving an authentication response signal that is a response to the query for authentication; and (d) authenticating the authenticity of the digital content based on the authentication query signal and the authentication response signal. It provides a digital content authentication processing method.

In the wireless identification tag-based digital content authentication processing method according to the present invention, the step (a) includes (a-1) generating the random number within a predetermined range and designating it as the authentication query signal. can do.

In addition, in the wireless identification tag-based digital content authentication processing method according to the present invention, the method further comprises: (e) converting the authentication query signal based on a predetermined conversion function to generate an authentication comparison signal; (d) may include comparing (d-1) the authentication comparison signal with the authentication response signal.

In addition, the wireless identification tag-based digital content authentication processing method according to the present invention, before the step (a), further comprising the step of (f) pre-store the device authentication password for generating the comparison signal for authentication, Step (e-1) may include (e-2) generating the comparison signal for authentication by converting the device authentication password and the authentication query signal based on a predetermined irreversible conversion function.

The present invention also provides a wireless identification tag-based digital content authentication processing method in an RFID tag in a wireless identification tag-based digital content authentication processing system including a digital content processing device and an RFID tag, comprising: (a) authentication from the digital content processing device; Receiving an inquiry query signal, (b) converting the authentication query signal based on a predetermined irreversible conversion function to generate an authentication response signal, and (c) converting the authentication response signal into the digital signal. It provides a wireless identification tag-based digital content authentication processing method comprising the step of transmitting to the content processing device.

In the wireless identification tag-based digital content authentication processing method according to the present invention, before the step (a), further comprising the step of (d) storing a tag authentication password for generating the response signal for authentication in advance, the step (b) may include (b-1) generating the authentication response signal by converting the authentication query signal and the tag authentication password based on a predetermined irreversible conversion function.

In the wireless identification tag-based digital content authentication processing method according to the present invention, the step (d) may include (d-1) storing the tag authentication password so that it is unreadable by an external device.

The present invention also provides a computer-readable recording medium having recorded thereon a program for realizing each step of the above-described method for processing digital content authentication based on a wireless identification tag.

Hereinafter, with reference to the accompanying drawings an embodiment of a wireless identification tag-based digital content authentication processing system and a wireless identification tag-based digital content authentication processing method of the present invention and a computer-readable recording medium recording a program for realizing the same. Explain.

1 is an exemplary block diagram of a wireless identification tag based digital content authentication processing system in accordance with the present invention.

As shown, the wireless identification tag-based digital content authentication processing system according to the present invention is exemplarily configured to include a digital content processing device 100 and an RFID tag 200.

The digital content processing device 100 also includes an authentication query signal generation unit 110, a device wireless communication unit 130, and an authentication execution unit 150 as shown.

In addition, as shown, the digital content processing device 100 may further include a device password storage unit 170, and although not shown, may further include a user input receiver.

The RFID tag 200 also includes an authentication response signal generator 210 and a tag wireless communication unit 230 as shown.

In addition, as shown, the RFID tag 200 may further include a tag password storage unit 250.

Hereinafter, a wireless identification tag based digital content authentication processing system according to the present invention will be described in more detail with reference to FIG. 1.

First, the digital content processing apparatus 100 will be described in detail as follows.

The authentication query signal generation unit 110 generates an authentication query signal.

The authentication query signal is a signal transmitted from the digital content processing apparatus 100 to the RFID tag 200 to receive a response from the RFID tag 200.

For example, as the authentication query signal, a value randomly generated within a predetermined range may be used, and the RFID tag 200 generates a response signal that is internally signaled to the authentication query signal, that is, an authentication response signal and generates an RFID. The tag 200 is transmitted to the tag 200 to authenticate the authenticity of the RFID tag 200.

In this case, the reason for using the random number as the query signal for authentication is to prevent the case where monitoring is performed by other readers in the vicinity. That is, by using an authentication query signal that is changed every time, even if monitoring is performed using a tag or a reader nearby, the response to the response is not known.

 The device wireless communication unit 130 transmits the authentication query signal generated by the authentication query signal generator 110 to the RFID tag 200 and the authentication response signal which is a response to the authentication query signal from the RFID tag 200. Receive That is, the device wireless communication unit 130 performs an interface for RFID communication.

The authentication performing unit 150 authenticates the authenticity of the digital content based on the authentication query signal generated by the authentication query signal generator 110 and the authentication response signal received through the device wireless communication unit 130.

This authentication is described in more detail as follows.

The authentication performing unit 150 may include an authentication comparison signal generation unit (not shown) that generates an authentication comparison signal for authentication based on the authentication query signal generated by the authentication query signal generator 110 to perform authentication. It may further include.

In this case, the authenticity of the digital content is authenticated by comparing the authentication comparison signal generated by the authentication comparison signal generator (not shown) with the authentication response signal received from the RFID tag 200. That is, the authentication comparison signal generation unit (not shown) generates an authentication comparison signal which is the same as or corresponding to the authentication response signal generated from the RFID tag 200 and transmitted to the digital content processing apparatus 100. . Therefore, the authentication comparison signal generator (not shown) may use a conversion function that is the same as or corresponding to the authentication response signal generator 210 of the RFID tag 200.

The digital content processing apparatus 100 may be configured to be executable only on digital contents authenticated through the authentication performing unit 150.

In addition, the RFID tag 200 will be described in detail as follows.

The authentication response signal generator 210 generates an authentication response signal based on the authentication query signal transmitted from the digital content processing apparatus 100. That is, when receiving an authentication query signal, an authentication response signal is generated by using a predetermined conversion function.

As described above, the authentication response signal generator 210 may use a conversion function that is the same as or corresponding to the authentication comparison signal generator 130 of the digital content processing apparatus 100.

The tag wireless communication unit 230 receives an authentication query signal from the digital content processing apparatus 100 and transmits an authentication response signal generated by the authentication response signal generator 210 to the digital content processing apparatus 100. That is, the tag wireless communication unit 230 performs an interface for RFID communication.

Hereinafter, the authentication will be described in more detail with reference to the function of the authentication performing unit 150.

The authentication comparison signal generator (not shown) and the authentication response signal generator 210 may use the same or corresponding conversion function as described above.

For example, if the authentication query signal is N1 (a random number within a predetermined range), the authentication comparison signal generation unit (not shown) may generate the authentication comparison signal using the function F1 (N1), and correspondingly The authentication response signal generator 210 may also generate an authentication response signal using the function F1 (N1). In this case, the authentication comparison signal and the authentication response signal are configured to be the same.

Here, the function F1 (x) is a transform function for converting x, and the function value is an authentication comparison signal or an authentication response signal.

Alternatively, the authentication comparison signal generator (not shown) may generate a comparison signal for authentication using F1 (N1), and in response, the authentication response signal generator 210 may authenticate using F2 (N1). Can generate a response signal.

Here, F1 (x) is a transform function for transforming x, F2 (x) is a transform function for transforming x, and each function value is an authentication comparison signal or an authentication response signal. However, it may be configured such that a constant correspondence exists by comparing the results of F1 (x) and F2 (x).

Therefore, even when the authentication comparison signal generation unit (not shown) of the digital content processing apparatus 100 and the authentication response signal generation unit 210 of the RFID tag 200 do not use the same conversion function, the authentication performing unit 150 is performed. Comparison by

That is, the authentication performing unit 150 compares the response signal for authentication and the comparison signal for authentication, and compares the digital content with the same (i.e., using the same conversion function) or corresponding (i.e., using the corresponding conversion function) digital content. Authenticate as true

In this case, the RFID tag 200 generates an authentication response signal based on the authentication query signal in the authentication response signal generation unit 210. In particular, since the authentication query signal is a random number, the authentication response signal also depends on the authentication signal. Will change.

Therefore, even if the surrounding RFID tag has an authentication response signal for a certain number, since the authentication response signal for other numbers is not known, the authenticity of the RFID tag 200 can be guaranteed through this method.

Meanwhile, the digital content processing apparatus 100 may further include a device password storage unit 170 that stores a device authentication password which is a password for performing authentication, and the RFID tag 200 is a tag that is a password for performing authentication. The tag password storage 250 may further include an authentication password.

The use of the device authentication password or the tag authentication password is to improve security when performing authentication.

In this case, the authentication comparison signal generation unit (not shown) generates an authentication comparison signal based on the device authentication password of the device password storage unit 170 and the authentication query signal of the authentication query signal generator 110. Similarly, the authentication response signal generator 210 generates an authentication response signal based on the tag authentication password of the tag password storage 250 and the received authentication query signal.

In this case, the device password storage unit 170 and the tag password storage unit 250 store the same authentication password or an authentication password corresponding to each other. That is, the same authentication password as the tag authentication password stored in the RFID tag 200 or an authentication password having a corresponding relationship of 1: 1 or n: 1 is authenticated to the device password storage unit 170 of the digital content processing apparatus 100. Synchronization of this authentication password is performed by storing as a password. For example, a device authentication password may be configured to correspond to multiple tag authentication passwords.

For example, the digital content processing device 100 may further include a user input receiver (not shown) that receives a user input.

The user input receiver (not shown) may be configured to receive an input, for example, in the form of a keyboard or the like.

For example, when digital content is sold in a form stored in a CD or the like, the authentication code may be displayed on a CD surface or a case, or may be displayed on an RFID tag 200 provided with a CD medium.

In this case, the device password storage unit 170 is configured to store a device authentication password input through a user input receiver (not shown). In this case, the RFID tag 200 may be provided in a form in which a tag authentication password is stored in advance.

Alternatively, the device password storage unit 170 may be configured to store a device authentication password received from an external device (not shown) connected through a network.

That is, the digital content processing apparatus 100 may be configured to receive a device authentication password after connecting to a device storing a device authentication password corresponding to the tag authentication password of the RFID tag 200 through a network. In this case, the tag authentication password may be stored in advance in the RFID tag 200.

In addition, the device password storage unit 170 may read and store a device authentication password stored in a recording medium, that is, a CD or the like, in which digital content is stored. In other words, the device authentication password is pre-stored when selling digital content, and the digital content processing apparatus 100 may read the information and store it in the device password storage unit 170. Also in this case, the tag authentication password corresponding to the device authentication password may be stored in the RFID tag 200 in advance.

In this way, the device authentication password of the device password storage unit 170 is configured to have the same authentication password or 1: 1, n: 1 correspondence with the tag authentication password of the tag password storage unit 250.

Meanwhile, the tag password storage unit 250 may be configured to store the tag authentication password so that the tag password storage unit 250 cannot be read by an external device such as another RFID reader.

That is, since the tag password storage unit 250 is included in the RFID tag 200 but stores the tag authentication password, the tag password storage unit 250 must store the tag password storage unit 250 so that the tag password storage unit 250 cannot read the tag password.

Hereinafter, the authentication using the device authentication password and the tag authentication password will be described in more detail.

As described above, the authentication comparison signal generation unit (not shown) generates an authentication comparison signal based on the device authentication password of the device password storage unit 170 and the authentication query signal of the authentication query signal generator 110. do. In addition, as described above, the authentication response signal generator 210 generates an authentication response signal based on the tag authentication password of the tag encryption storage 250 and the received authentication query signal.

Assume that the device authentication password and the tag authentication password are the same, and that generation of the comparison comparison signal or the authentication response signal is performed using the same conversion function, and the same authentication password, that is, the device authentication password and the tag authentication password is PW Let N1 be the query signal for authentication and F3 (x, y) for the conversion function.

In this case, the authentication comparison signal or the authentication response signal may be represented by F3 (N1, PW).

That is, the response signal for authentication, which is a signal generated and transmitted from the RFID tag 200, is represented by F3 (N1, PW).

The conversion function F3 (x, y) used by the authentication response signal generator 210 may preferably use an irreversible conversion function.

"Invertible transform function" means, for example, a function configured not to know what the input value of the transform function is even if the transform function and the transformed result, i.e., the response signal for authentication, are known. In such a case, even if an external tag or reader is monitored and the authentication query signal and the conversion function are known, the authentication password PW is not known. Therefore, even though an external tag or reader is monitored, it is impossible to generate an authentication response signal in response to a randomly changing authentication query signal, thereby enabling enhanced protection for the authentication password PW.

Although it is assumed that the same comparison function is used to generate the comparison comparison signal and the authentication response signal, the same is true even when the comparison comparison signal and the authentication response signal are generated using the corresponding conversion function. to be. That is, the authenticity can be configured by comparing the authentication comparison signal and the authentication response signal.

2 is an exemplary flowchart of a method for processing wireless content tag based digital content authentication according to the present invention.

2 is a flowchart of a method for processing wireless identification tag-based digital content authentication in a digital content processing apparatus, particularly in a wireless content tag-based digital content authentication processing system including the digital content processing apparatus and the RFID tag described with reference to FIG. 1. Indicates. In addition, in the description of the wireless identification tag-based digital content authentication processing method according to the present invention with reference to FIG. 2, a detailed description thereof will be omitted.

First, an authentication query signal to be transmitted to the RFID tag is generated (S110).

In this case, as described in detail with reference to FIG. 1, an authentication query signal is generated by generating a random number. Such random numbers can be generated by arbitrarily selecting in a predetermined range.

Thereafter, the authentication query signal generated in step S110 is transmitted to the RFID tag (S130).

Thereafter, in response to the transmission in step S130, an authentication response signal, which is a response to the authentication query signal, is received from the RFID tag (S150).

Thereafter, authenticity of the digital content is authenticated based on the authentication query signal generated in step S110 and the authentication response signal received in step S150 (S170).

Although not shown, the method may further include generating an authentication comparison signal by converting the authentication query signal based on a predetermined conversion function.

That is, the authentication comparison signal is generated for the authentication in step S170.

In this case, in the authentication step S170, authentication may be performed by comparing the generated authentication comparison signal with the authentication response signal received in step S150.

The authentication response signal may be generated by converting the authentication query signal from the RFID tag based on a conversion function used for generating the authentication comparison signal.

In this case, if it is determined in step S170 whether the authentication comparison signal and the authentication response signal are the same, the authenticity of the digital content may be authenticated.

Although not shown, the method may further include storing the device authentication password for generating the comparison signal for authentication before step S110.

Using a device authentication password is for added security.

In this case, the generating of the above-described authentication comparison signal may be configured to generate the authentication comparison signal by converting the device authentication password and the authentication query signal based on a predetermined irreversible conversion function.

Similarly, the authentication response signal received from the RFID tag may be generated by converting the tag authentication password and the authentication query signal corresponding to the device authentication password based on an irreversible conversion function used in the generation of the authentication comparison signal.

If it is assumed that the device authentication password and the tag authentication password are the same, and the conversion function is the same, in step S170, it is possible to authenticate the authenticity of the digital content by determining whether the authentication comparison signal and the authentication response signal are the same.

On the other hand, the generation of the response signal for authentication has been described as using the same device authentication password and tag authentication password as in the digital content processing device and using the same conversion function, but the device authentication password and the tag authentication password are not the same or are not the same. It is also possible to use a transform function, but a detailed description thereof will be omitted.

3 is another exemplary flowchart of a method for processing wireless content tag based digital content authentication according to the present invention.

3 is a flowchart illustrating a wireless identification tag based digital content authentication processing method in an RFID tag, particularly in a wireless identification tag based digital content authentication processing system including the digital content processing apparatus and the RFID tag described with reference to FIG. 1. In addition, in the description of the method for processing the wireless content tag-based digital content authentication according to the present invention with reference to FIG. 3, detailed descriptions thereof will be omitted.

First, an authentication query signal is received from the digital content processing device (S210).

Thereafter, the authentication query signal received in step S210 is converted based on a predetermined irreversible conversion function to generate an authentication response signal (S230).

Thereafter, the authentication response signal generated in step S230 is transmitted to the digital content processing device (S250).

In this case, although not shown, the method may further include storing a tag authentication password for generating a response signal for authentication before step S210.

This tag authentication password is intended to enhance security.

In this case, in step S230, the authentication query signal and the authentication password are configured to be converted based on a predetermined irreversible conversion function to generate an authentication response signal.

Also, when storing the tag authentication password, it is desirable to store the tag authentication password so that it can not be read by an external device. That is, in order to generate the response signal for authentication, the tag authentication password may be stored in the RFID tag such that it cannot be read by an external RFID reader.

The present invention also provides a computer-readable recording medium having recorded thereon a program for realizing each step of the above-described wireless identification tag based authentication processing room according to the present invention.

A computer readable recording medium refers to any kind of recording device that stores data, that is, data in code or program form, so that it can be read by a computer system. Such computer-readable recording media include, for example, memories such as ROM and RAM, storage media such as CD-ROM and DVD-ROM, magnetic storage media such as magnetic tape and floppy disk, optical data storage devices, and the like. It also includes a case where it is implemented in the form of transmission via. Such computer readable recording media can also be distributed over network coupled computer systems so that the computer readable data is stored and executed in a distributed fashion.

However, a detailed description of such a computer-readable recording medium will be omitted since it overlaps with the wireless identification tag-based digital content authentication method according to the present invention described with reference to FIGS. 2 to 3.

Although the configuration of the present invention has been described in detail, these are merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. This will be possible.

Therefore, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. It is intended that the scope of the invention be interpreted by the following claims, and that all techniques falling within the equivalent scope thereof shall be construed as being included in the scope of the invention.

As described above, according to the present invention, authentication is performed using a random number in the authentication of digital content, thereby preventing the leakage of authentication information through communication monitoring between the RFID tag and the digital content processing device, and including the authentication information. The authenticity of the can be verified based on the response to the random number.

Claims (18)

A wireless identification tag-based digital content authentication processing system including a digital content processing device and an RFID tag, The digital content processing device, An authentication query signal generator for generating an authentication query signal for authenticating authenticity of digital content using a random number; A device wireless communication unit which transmits the authentication query signal to the RFID tag and receives an authentication response signal generated corresponding to the authentication query signal from the RFID tag; An authentication performing unit authenticating authenticity of the digital content based on the authentication query signal and the authentication response signal To include, The RFID tag, An authentication response signal generator for generating the authentication response signal for authentication of the digital content based on the authentication query signal; A tag wireless communication unit which receives the authentication query signal from the digital content processing device and transmits the authentication response signal to the digital content processing device. Wireless identification tag based digital content authentication processing system comprising a. The method of claim 1, The authentication performing unit further includes an authentication comparison signal generation unit generating an authentication comparison signal for authentication based on the authentication query signal. The authentication comparison signal generation unit or the authentication response signal generation unit converts the authentication query signal into the authentication comparison signal or the authentication response signal using the same or corresponding conversion function, And the authentication performing unit authenticates the digital content as true if the authentication response signal and the comparison comparison signal are the same or corresponding. The method of claim 2, The apparatus for processing digital content further includes a device password storage configured to store a device authentication password, which is a password for performing authentication of the digital content. The authentication comparison signal generation unit is to generate the authentication comparison signal based on the device authentication password and the authentication query signal. The RFID tag further includes a tag password storage unit for storing a tag authentication password, which is a password for performing authentication of the digital content. And the authentication response signal generating unit generates the authentication response signal based on the tag authentication password and the authentication query signal. The method of claim 3, And the authentication response signal generator generates the authentication response signal by irreversibly converting the tag authentication password and the authentication query signal for authentication. The method of claim 3, The digital content processing device further comprises a user input receiving unit for receiving a user input, And the device password storage unit stores the device authentication password inputted through the user input receiving unit. The method of claim 5, And the device authentication code is displayed on a recording medium or the RFID tag corresponding to the digital content. The method of claim 3, And the device password storage unit stores the device authentication password received from an external device connected through a network. The method of claim 3, And the device password storage unit reads and stores the device authentication password from a recording medium storing the digital content. The method of claim 3, And the tag password storage unit stores the tag authentication password so that it is not readable by an external device. The method of claim 3, And the device authentication password and the tag authentication password are the same or correspond to each other. A wireless identification tag-based digital content authentication processing method in a digital content processing apparatus in a wireless content tag-based digital content authentication processing system including a digital content processing device and an RFID tag, (a) generating an authentication query signal to be transmitted to the RFID tag using a random number for authentication of digital content; (b) transmitting the authentication query signal to the RFID tag; (c) receiving an authentication response signal which is a response to the authentication query signal from the RFID tag; (d) authenticating authenticity of the digital content based on the authentication query signal and the authentication response signal; Wireless identification tag based digital content authentication processing method comprising a. The method of claim 11, Step (a) is, (a-1) generating the random number within a predetermined range and designating the random number as the query signal for authentication; Wireless identification tag based digital content authentication processing method comprising a. The method of claim 11, (e) converting the authentication query signal based on a predetermined conversion function to generate an authentication comparison signal More, Step (d) is, (d-1) comparing the authentication comparison signal with the authentication response signal Wireless identification tag based digital content authentication processing method comprising a. The method of claim 13, wherein before step (a), (f) storing a device authentication password for generating the comparison signal for authentication in advance More, In the step (e-1), (e-2) generating the comparison signal for authentication by converting the device authentication password and the authentication query signal based on a predetermined irreversible conversion function. Wireless identification tag based digital content authentication processing method comprising a. A wireless identification tag-based digital content authentication processing method in an RFID tag in a wireless identification tag-based digital content authentication processing system including a digital content processing device and an RFID tag, (a) receiving an authentication query signal from the digital content processing apparatus; (b) converting the authentication query signal based on a predetermined irreversible conversion function to generate an authentication response signal; (c) transmitting the authentication response signal to the digital content processing device; Wireless identification tag based digital content authentication processing method comprising a. The method of claim 15, wherein, prior to step (a), (d) storing in advance a tag authentication password for generating the response signal for authentication; More, In the step (b), (b-1) generating the authentication response signal by converting the authentication query signal and the tag authentication password based on a predetermined irreversible conversion function. Wireless identification tag based digital content authentication processing method comprising a. The method of claim 16, In step (d), (d-1) storing the tag authentication password so that it is unreadable by an external device. Wireless identification tag based digital content authentication processing method comprising a. A computer-readable recording medium having recorded thereon a program for realizing each step of the wireless identification tag based digital content authentication processing method according to any one of claims 11 to 17.

Images