JP2008108139A - Rfid device, rfid discrimination device, and rfid control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently ensure security of an RFID (Radio Frequency Identification) device. <P>SOLUTION: A transmitting/receiving section 13 receives an inherent ID and an identification value from an RFID device A. A storage section 15 stores a previously stored predetermined calculating formula and the received inherent ID and the identification value. A control section 23 compares match/mismatch between the determination value obtained by substituting the inherent ID into the calculating formula and the identification value based on the stored inherent ID and identification value. The control section 23, when the determination value matches with the identification value, discriminates that stored information in the RFID device A is not copied. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an RFID device, an RFID discriminating device, and an RFID control device, and stores and controls an RFID device that stores various information, a discriminating device that discriminates authenticity / incorrectness of the RFID device, and authenticity discriminating information of the RFID device. The present invention relates to a control device.

  An RFID (Radio Frequency Identification) device records various information in a built-in IC chip in a readable and writable manner, and reads it by radio waves, and is used by being attached to a product or embedded in a card. Used for product and owner authentication, product management at production sites, etc.

  As described above, the RFID device is used attached to a product or a card. However, since management information and the like can be read and written, the stored information must be authentic to indicate the RFID device. If information relating to a product or a card holder different from the intended product or card is illegally or intentionally copied and stored illegally, it is not preferable from the viewpoint of ensuring security.

  Therefore, as a proposal for ensuring the security of the RFID device, for example, there is an RFID system disclosed in Japanese Patent Application Laid-Open No. 2003-16396 (Patent Document 1).

The configuration of Patent Document 1 is a manufacturing variation of ICs built in a tag in an RFID system in which a packet is returned at least twice from a power-on reset signal of a power supply or a polling signal sent from a reader. Measures the packet communication interval specific to a tag that fluctuates based on this, compares this measured value with the value written explicitly or implicitly on the tag, and approves the tag if they match. However, even when the data in the tag is illegally read and the tag is duplicated, it can be reliably identified.
JP 2003-16396 A

  However, in the RFID system of Patent Document 1 described above, it is difficult to say that the measurement accuracy of a short communication interval for each tag is sufficient, and the unique ID assigned at the time of tag manufacture according to the ISO protocol is used. If there is no manufacturing variation, it is difficult to use.

  The present invention has been made to solve such a problem. An RFID device, an RFID discriminating device, and an RFID device capable of ensuring security by discriminating whether an RFID device is authentic / incorrect with a simple configuration, and An object is to provide an RFID control device.

  In order to solve such a problem, an RFID device according to the present invention includes at least a storage unit in which information including a unique ID that cannot be rewritten unique to the device is readable and writable, and a unique ID stored in the storage unit. A transmission / reception unit that transmits / receives the stored information to / from the outside, and a control unit that performs read / write control of the storage unit and transmission / reception control of the transmission / reception unit, and the storage unit has a unique ID assigned to the storage unit. An identification value obtained by substituting into the calculation formula is stored as the storage information.

  The RFID discriminating device according to the present invention stores a unique ID assigned to each RFID device and an identification value obtained by substituting this unique ID into a predetermined calculation formula from the RFID device in which the unique ID and The RFID device when the determination value obtained by substituting the unique ID into the same calculation formula as the above calculation formula matches the identification value based on the reception unit that receives the identification value, the received unique ID and the identification value And a discrimination control unit for discriminating that is authentic.

  An RFID control device according to the present invention receives a unique ID from an RFID device and transmits a identification value to the RFID device, and a value obtained by substituting the received unique ID into a predetermined calculation formula. A generation transmission control unit that generates the identification value and controls transmission of the identification value from the transmission / reception unit.

  In such an RFID device according to the present invention, at least information including a unique ID unique to the device is stored in the storage unit so as to be readable and writable, and stored information including the unique ID stored in the storage unit is externally stored. The control unit performs read / write control of the storage unit and transmission / reception control of the transmission / reception unit, and the storage unit has an identification value obtained by substituting the unique ID into a predetermined calculation formula. Since it is stored, it is possible to determine whether the RFID device is authentic or not by using the identification value, and it is possible to ensure good security.

  In the RFID discriminating apparatus according to the present invention, a unique ID assigned to each RFID apparatus and an identification value obtained by substituting this unique ID into a predetermined calculation formula are received by the receiving unit, and these received unique IDs are received. Based on the ID and the identification value, the discrimination control unit determines that the RFID device is authentic when the determination value obtained by substituting the unique ID into the same calculation formula as the calculation formula matches the identification value. Therefore, with a simple configuration, it is easy to determine authenticity / incorrectness through the presence or absence of copying of the RFID device, and good security can be ensured.

  In the RFID control device according to the present invention, the transmission / reception unit receives the unique ID from the RFID device, the generated transmission control unit generates the identification value by substituting it into a predetermined calculation formula, and the identification value is transmitted / received. Since the transmission control is performed from the unit to the RFID device, the identification value for copy discrimination of the RFID device can be stored in the RFID device with a simple configuration, which contributes to ensuring good security.

  Embodiments of an RFID device, an RFID discriminating device, and an RFID control device according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of an RFID device according to the present invention.

  1, the RFID device A according to the present invention includes an antenna unit 1, a transmission / reception unit 3, a storage unit 5, and a control unit 7. The transmission / reception unit 3, the storage unit 5 and the control unit 7 are, for example, ICs. It is formed in the chip 9 and mounted on a sheet-like or chip-like tag main body 11.

  The antenna unit 1 is, for example, a known loop-shaped transmission / reception antenna formed on the tag main body 11, and is connected to the transmission / reception unit 3.

  The transmission / reception unit 3 rectifies and smoothes the drive radio wave received by the antenna unit 1 from the outside under the control of the control unit 7 to form a drive power source in the IC chip 9, detects the received radio wave, and transmits transmission information. In addition to modulation and transmission, it performs various signal processing and is connected to the storage unit 5 and the control unit 7.

  The storage unit 5 is a readable / writable memory that stores information from the control unit 7 under the control of the control unit 7, and as shown in FIG. In addition to the unique ID assigned uniquely, the country code, creator, etc. are stored in a table. The unique ID is generally stored so that it cannot be rewritten.

  In addition, the storage unit 5 stores an identification value obtained from the outside via, for example, the control unit 7. This identification value is obtained by substituting the unique ID into a predetermined calculation formula. For example, a predetermined calculation in which the calculated value is always “0” regardless of which unique ID is substituted. The calculated value “0” obtained by substituting into the equation is stored from the outside via the control unit 7. The calculation of the identification value will be described later.

  The control unit 7 includes a CPU that performs the control operation and a ROM that stores the operation program. The control unit 7 controls the transmission / reception unit 3 and the storage unit 5 to receive and analyze radio waves from the outside, and the storage unit 5 based on this process. It has a function of controlling information storage processing and information reading / transmission processing.

  In such an RFID apparatus A, an identification value obtained externally in advance by substituting a unique ID that cannot be rewritten into a predetermined calculation formula is stored in the storage unit via the antenna unit 1 and the transmission / reception unit 3 under the control of the control unit 7. 5 and is transmitted from the storage unit 5 to the outside through the transmission / reception unit 3 and the antenna unit 1 together with a unique ID and the like based on a read instruction from the outside.

  Therefore, for example, with respect to the unique ID and identification value obtained from the RFID device A, the determination value is calculated by substituting the unique ID into the above-described calculation formula, and the determination value and the identification value are compared with each other. If they match, the stored information in the RFID device A is not copied, and it is determined that the RFID device A (a product to which the RFID device A is attached, for example, print toner of the image forming device) is authentic. Therefore, it is possible to ensure good security of the RFID device A itself using the identification value.

  Next, an RFID discriminating apparatus according to the present invention will be described.

  In FIG. 3, the RFID discriminating apparatus according to the present invention comprises a transmission / reception unit 13, a storage unit 15, an operation display unit 17, an image reading unit 19, a printing unit 21, and a control unit 23. For example, a copying machine, It forms part of an image forming apparatus such as a printer or a multi function peripheral (MFP).

  The transmission / reception unit 13 has a reception function for receiving the unique ID assigned to the RFID device A shown in FIG. 1 and the identification value related to the unique ID in a non-contact manner under the control of the control unit 23, and the unique ID. In addition to the function of storing the identification value and the like in the storage unit 15, it has a transmission function of transmitting the identification value to the RFID device A. Details of the transmission function of the unique ID and the identification value related to the unique ID will be described later.

  The reception of the unique ID and the identification value from the RFID apparatus A is automatically performed, for example, when a printing toner (not shown) of the image forming apparatus is loaded.

  The storage unit 15 stores, under the control of the control unit 23, the received unique ID, the identification value, and the calculation formula for calculating the identification value in a readable / writable manner, the data displayed on the operation display unit 17, the image reading unit This is a known memory for storing the image data read at 19 and print image data generated from the image data.

  The operation display unit 17 is a touch switch type panel input unit that also serves as a liquid crystal display panel arranged in the apparatus main body (not shown), and a unique ID and identification from the RFID apparatus A under the control of the control unit 23. In addition to inputting a value take-in instruction, an image reading instruction by the image reading unit 19, a printing instruction by the printing unit 21, and other instructions, it has a function of displaying “authentication of RFID device A, fraud” which will be described later.

  The image reading unit 19 is a conventionally known reading unit that optically reads an image original, for example, and the printing unit 21 is a known color or monochrome print engine that prints print image image data based on the read image data. Both operate under the control of the control unit 23.

  The control unit 23 includes a CPU that performs the control calculation and a ROM that stores the operation program. The control unit 23 receives the unique ID and the identification value by the transmission / reception unit 13 and stores / reads data in the storage unit 15. The display input control, the image data reading control by the image reading unit 19, the print image image data generation / storage control function from this image data, and the print control function by the printing unit 21 are provided.

  The control unit 23 reads the stored calculation formula, unique ID, and identification value, calculates the determination value by substituting the unique ID into the calculation formula, and when the determination value matches the identification value, the RFID device The stored information in A is not copied, it is determined that the RFID device A is authentic, the operation display unit 17 displays that “RFID device A is authentic”, and the determination value becomes the identification value. When they do not match, it is determined that the RFID device A is copied and the RFID device A is unauthentic (unauthorized), and the operation display unit 17 has a function of displaying that “RFID device A is unauthorized”. Yes.

  That is, the control unit 23 has a determination control function, and for example, determines whether the print toner is a genuine product.

  The control unit 23 has a function of prohibiting or restricting main operations of the image forming apparatus such as the image reading unit 19 and the printing unit 21 when it is determined that the RFID device A is unauthentic (unauthorized).

  In such an RFID discriminating apparatus according to the present invention, the unique ID and the identification value from the RFID apparatus A are received by the transmission / reception unit 13, and the received unique ID and the identification value are stored in the storage unit 15. Based on the stored unique ID and identification value, the judgment value obtained by substituting the unique ID into the calculation formula is compared with the discrepancy between the identification value and a copy of the stored information in the RFID device A when they match. Whether or not there is.

  For this reason, the RFID device A (RFID device A has been assigned with a simple configuration such as a comparison between the discrimination value obtained by simple calculation based on the unique ID received from the RFID device A and the identification value received from the RFID device A. Since the authenticity / incorrectness of the product is determined, the authenticity / incorrectness of the RFID device can be determined easily, quickly and accurately, and good security of the RFID device A can be ensured.

  Further, an RFID control device according to the present invention will be described. This RFID control apparatus is obtained by adding a function to the RFID discriminating apparatus shown in FIG. 3, and will be described with reference to FIG.

  That is, the control unit 23 generates a value obtained by substituting the stored unique ID into a predetermined calculation formula as the identification value, stores it in the storage unit 15, and controls the transmission / reception unit 13 to generate the identification. It has a function as a generation transmission control unit that transmits a value together with a unique ID or independently. Other configurations and functions are almost the same as those in FIG.

  In this configuration, the unique ID is received from the RFID device A and is taken in, and after generating the identification value, it is transmitted together with the unique ID or alone.

  In such an RFID control device, the unique ID from the RFID device A is received by the transmission / reception unit 13 and stored in the storage unit 15, and the control unit 23 generates and stores the identification value from the stored unique ID and calculation formula. The identification value stored in the unit 15 is transmitted from the transmission / reception unit 13 to the RFID device A in FIG. 1, and the identification value is stored in the storage unit 5 in the RFID device A.

  Therefore, it is possible to easily store an identification value for determining whether or not there is a copy of stored information in the RFID device A in the RFID device A with a simple configuration, which contributes to ensuring good security of the RFID device A.

  In addition, since the unique ID at the time of manufacturing the RFID device A is used, it is possible to accurately determine even if there is no manufacturing variation of the IC chip 9, and it is not necessary to register the identification value in another device such as a server. There is an advantage that a configuration for communicating with a server or the like is not necessary.

  It should be noted that the above-described calculation formulas for obtaining the identification value and determination value in the present invention can be arbitrarily selected, and can be changed for each RFID apparatus A so that the identification values are the same, or the RFID apparatus using the same calculation formula Different identification values may be used for each A.

  However, the calculation formula at the same position is used on the RFID device A side and the discriminating device or control device side.

It is a block diagram which shows one Embodiment of the RFID apparatus which concerns on this invention. It is a figure which shows the memory content in RFID apparatus. It is a block diagram which shows the discrimination | determination apparatus and control apparatus which concern on the RFID apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna part 3, 13 Transmission / reception part 5, 15 Storage part 7 Control part 9 IC chip 11 Sheet-like or tag main body 17 Operation display part 19 Image reading part 21 Printing part 23 Control part (Generation transmission control part)
A RFID device

Claims (3)

A storage unit in which at least information including a unique ID that cannot be rewritten unique to the device is readable and writable;
A transmission / reception unit for transmitting / receiving the storage information including the unique ID stored in the storage unit to / from the outside;
A control unit for performing read / write control of the storage unit and transmission / reception control of the transmission / reception unit;
Comprising
The RFID device according to claim 1, wherein the storage unit stores an identification value obtained by substituting the unique ID into a predetermined calculation formula as the storage information. A receiving unit that receives the unique ID and the identification value from the RFID device in which a unique ID assigned to each RFID device and an identification value obtained by substituting the unique ID into a predetermined calculation formula are stored;
Based on the received unique ID and identification value, the RFID device is determined to be authentic when a determination value obtained by substituting the unique ID into the same calculation formula as the calculation formula matches the identification value. A discrimination control unit;
An RFID discriminating apparatus comprising: A transmission / reception unit that receives a unique ID from the RFID device and transmits an identification value to the RFID device;
A generation transmission control unit that generates a value obtained by substituting the received unique ID into a predetermined calculation formula as the identification value and performs transmission control from the transmission / reception unit;
An RFID control device comprising:

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