JP4595421B2 - Information providing system, information storage device, advertising medium, advertising medium manufacturing apparatus, program, and program providing server - Google Patents

Description

  The present invention relates to an information providing system, an information storage device, an advertising medium, an advertising medium manufacturing apparatus, a program, and a program providing server capable of non-contact information communication.

  Conventionally, posters for advertising event information and new product information have been posted at stations and department stores. However, when you see an advertisement such as a poster you are interested in, it is very troublesome to copy the address and contact information related to the advertisement by writing. Therefore, a technology is known in which information related to the advertising material is electronically stored in an IC card or IC tag and attached to the advertising material, and the information can be read by a mobile terminal capable of non-contact information communication. (For example, Patent Document 1).

  However, since advertisements such as posters are posted in a place that is easily noticeable, information stored electronically on IC cards and the like can be rewritten as well as information on advertisements themselves can be rewritten. There was a fear. For example, it is assumed that a homepage address related to an advertisement is stored in an IC card attached to the advertisement. A user who is interested in the advertising material reads information on the IC card with a mobile terminal capable of non-contact information communication, reads a homepage address, and accesses a homepage related to the advertising material. Here, if the information on the IC card is rewritten and a homepage address that is completely unrelated to the advertisement that the user is interested in is stored, there is a problem that information that is not useful to the user is provided. It was.

  In addition, if there is a risk that information stored electronically on an IC card, etc. could be rewritten, the advertiser who provides the advertising material cannot provide the information desired by the user and places the advertising material in peace. There was also a problem that they could not.

JP 2001-160105 A

  Accordingly, the present invention has been made in view of such a problem, and the object of the present invention is to enable content communication related to advertisements described in an advertisement medium to be non-contact information communication. It is possible to determine whether or not the content information stored in the storage device has been tampered with, and to safely provide more information than the information described in the advertising medium by a simple method It is an object of the present invention to provide a new and improved information providing system, advertising medium, and advertising medium manufacturing apparatus capable of performing the above.

  In order to solve the above-described problems, according to one aspect of the present invention, an advertisement medium incorporating an information storage device storing content information and meta-information capable of non-contact information communication with an external device; An information providing system comprising: an information reading device capable of reading content information in a non-contact manner with a storage device; and the information reading device includes a content information determination device. An information providing system is provided that determines the tampering status of the read content information and validates the read content information when it is determined that the content information has not been tampered with.

  The non-contact information communication is possible, for example, by performing non-contact data communication using radio waves, for example, using NFC communication technology (Near Field Communication Technology) or the like. Data communication in a non-contact manner. The NFC communication technology is a technology for performing contactless communication at a maximum communication speed of 212 Kbps at a short distance, for example, within a narrow range of about 10 cm, using an RF carrier frequency of 13.56 MHz.

  The information storage device is an IC card or an IC tag that can perform information communication in a non-contact manner and can store information electronically. The information reading device is an information terminal device that can read information stored in the IC card or IC tag using electromagnetic waves. For example, the information reading device is a mobile phone that is a mobile terminal or a PDA (Personal Digital). (Assistant) etc. may be provided.

  The advertisement medium is a medium in which information to be advertised is described, and is, for example, a poster posted at a station or a department store. The content information is information related to the advertising medium and can be recorded electronically. For example, it may be a sound or an image related to the information on the advertising medium, and it takes time to copy by writing, and it is stored in memory. It may be a homepage address or map information that is difficult to keep. The meta information is information related to the advertisement or the content information, such as the advertiser name and contact information, the creation date and time of the content information, the expiration date, the R designation information, the pay / free information, the language information, and the like.

  Also, enabling the content information means that the information reading device is in a state where the content information can be confirmed. For example, the content information is displayed on the display screen of the mobile terminal or a notification that prompts the user to download the content information. Is to do.

  According to the above invention, the content information related to the advertisement described in the advertisement medium is stored in the information storage device capable of non-contact information communication, and the stored content information is falsified by the determination device. It can be determined whether or not. In addition, by adding meta information such as the expiration date of content information and R designation information, it becomes possible to provide information with higher added value than simply providing content information.

  In the above system, the information storage device stores the proof source message digest obtained by converting the content information and meta information by the irreversible algorithm; the determination device converts the content information and meta information by the irreversible algorithm. A verification message digest is created, and the proof source message digest and the verification message digest are compared. If both match, it may be determined that the content information has not been tampered with.

  An irreversible algorithm is an irreversible one-way function such as a hash function. Content information cannot be reproduced from a proof source message digest converted by an irreversible algorithm, and it is extremely difficult to create different content information having the same proof source message digest. Therefore, when data is sent and received, the data is not falsified if the data is converted at both ends of the communication path using an irreversible algorithm, and the converted message digest and the verification message digest are compared. You can find out.

  With this configuration, it is possible to perform more secure information communication in the information communication between the information storage device and the information reading device using the message digest converted by the irreversible algorithm. If the content information and meta information read by the information reading device are falsified as a result of the determination, the user is notified that the information has been falsified, or the content information and meta information that has been falsified is notified to the user. You can avoid offering.

  For example, it is assumed that the homepage address related to the advertising medium is included in the content information stored in the information storage device. A user who is interested in the advertisement medium reads the content information by the information reading device and accesses the homepage address. Here, it is conceivable that the homepage address included in the content information is altered to a homepage address of an unauthorized site that is charged only by accessing the homepage address. However, by performing secure information communication as described above, since the altered content information is not provided to the user, the user can be prevented from accessing an unauthorized site.

  In the above system, the information storage device stores the proof source message digest obtained by encrypting the content information and meta information using the secret key of the public key encryption algorithm; The information may be decrypted using the corresponding public key, the proof source message digest and the verification message digest may be compared, and if the two match, it may be determined that the content information has not been tampered with.

  With this configuration, the proof source message digest that has been encrypted and transmitted using the private key of the public key encryption algorithm is decrypted with the corresponding public key when read by the information reader, so it is not encrypted. Therefore, more secure information communication can be performed as compared to the case where the proof source message digest is transmitted.

  In the above system, the information storage device encrypts and stores the proof source message digest obtained by converting the content information and the meta information by an irreversible algorithm; and the determination device decrypts the encrypted proof source message. After that, the content information and meta information are converted by an irreversible algorithm to create a verification message digest. When the verification source message digest and the verification message digest are compared, and the two match, the content information It may be determined that there is no tampering.

  With this configuration, the proof source message digest sent after encryption requires a key for decrypting the data when it is read by the information reader, so the proof source message digest is sent without being encrypted. Compared to the case, it is possible to perform more secure information communication.

  In the above system, the information storage device stores the proof source message digest in which the content information is converted by the irreversible algorithm; the determination device converts the content information by the irreversible algorithm and outputs the verification message digest. The created message digest and the verification message digest are compared, and if the two match, it may be determined that the content information has not been tampered with.

  With such a configuration, by converting only content information and creating a message digest, the time required for conversion is shorter and faster information communication is possible than when creating a message digest by converting content information and meta information. It becomes possible. In addition, if the content information read by the information reading device has been tampered with, the user can be notified that the content has been tampered with, or the content information that has been tampered with can not be provided to the user. .

  Further, the information storage device stores a proof source message digest obtained by encrypting the content information using the secret key of the public key encryption algorithm, and the determination device uses the corresponding public key to store the content information. Decryption is performed, and the proof source message digest and the verification message digest are compared. If the two match, the content information may be determined not to be falsified.

  In the above system, the information storage device stores a proof source message digest in which the content information is converted by an irreversible algorithm, and further encrypts and stores the meta information and the proof source message digest; The judging device decrypts the encrypted meta information and the proof source message digest, then converts the content information with an irreversible algorithm to create a verification message digest, and generates the verification source message digest and the verification message digest. In comparison, if both match, it may be determined that the content information has not been tampered with.

    With this configuration, by encrypting the meta information and the proof source message digest, more secure information communication can be performed as compared with the case where only the proof source message digest is encrypted. Further, if the content information read by the information reading device has been tampered with, the user can be notified that the content has been tampered with, or the tampered content information can be prevented from being provided to the user.

  The information storage device stores a proof source message digest in which content information is converted by an irreversible algorithm, and further stores encrypted content information, meta information, and proof source message digest; , Decrypting the encrypted content information, meta information, and proof source message digest, and then converting the content information using an irreversible algorithm to create a verification message digest. The verification source message digest and the verification message digest If the two match, it may be determined that the content information has not been tampered with.

  With this configuration, the encrypted meta information and message digest can be transmitted to the information reader, and information communication between the information storage device and the information reader can be performed more securely than when encryption is not performed. Can be performed.

  In order to solve the above-described problems, according to another aspect of the present invention, there is provided an advertising medium in which an information storage device storing content information and meta information capable of non-contact information communication with an external device is incorporated. The information storage device is provided with an advertisement medium storing a proof source message digest obtained by converting content information and meta information by an irreversible algorithm. In the advertisement medium, the proof source message digest may be encrypted and stored.

  With this configuration, it is possible to verify the message digest and determine whether or not the content information stored in the information storage device incorporated in the advertising medium has been tampered with. In addition, more secure information communication can be performed by encrypting the message digest.

  In order to solve the above-mentioned problem, according to another aspect of the present invention, an advertising medium incorporating an information storage device storing content information and meta-information capable of information communication with an external device in a non-contact manner. The information storage device is provided with an advertisement medium storing a proof source message digest obtained by converting content information by an irreversible algorithm.

  In the advertisement medium, the meta information and the proof source message digest may be encrypted and stored. Further, the content information, meta information, and proof source message digest may be encrypted and stored.

  With this configuration, it is possible to verify the message digest and determine whether or not the content information stored in the information storage device incorporated in the advertising medium has been tampered with. Further, by encrypting the content information, meta information, and message digest, more secure information communication can be performed. In addition, more information can be provided in a secure state than conventional advertising media.

  In order to solve the above-mentioned problem, according to another aspect of the present invention, an advertising medium incorporating an information storage device storing content information and meta-information capable of information communication with an external device in a non-contact manner. An advertisement medium manufacturing apparatus is provided that stores a proof source message digest obtained by converting content information and meta information by an irreversible algorithm in an information storage device. In the advertisement medium manufacturing apparatus, the proof source message digest may be encrypted and stored.

  In order to solve the above-described problems, according to another aspect of the present invention, an advertising medium is manufactured in which an information storage device storing content information and meta information capable of information communication with an external device in a non-contact manner is incorporated. An advertisement medium manufacturing apparatus for storing a proof source message digest in which content information is converted by an irreversible algorithm is provided in an information storage device.

  In the advertisement medium manufacturing apparatus, the meta information and the proof source message digest may be encrypted and stored. Further, the content information, meta information, and proof source message digest may be encrypted and stored.

  In order to solve the above-described problem, according to another aspect of the present invention, an advertisement medium and an information medium that incorporates an information storage device that stores content information and meta-information that can be communicated with an external device in a non-contact manner are provided. An information reading device capable of reading content information by communicating information in a contact manner; provided with a content information determination device, wherein the determination device determines whether the read content information has been tampered with and altered the content information An information reading device is provided that validates the read content information when it is determined that there is no content.

  The information storage device stores a proof source message digest obtained by converting content information and meta information by an irreversible algorithm; the determination device converts the content information and meta information by an irreversible algorithm and performs verification. A message digest is created, and the certification source message digest and the verification message digest are compared. If both match, it may be determined that the content information has not been tampered with.

  With this configuration, it is possible to verify the message digest and determine whether or not the content information stored in the information storage device incorporated in the advertising medium has been tampered with. In addition, if the information has not been tampered with, the information reading apparatus may display the content information, or if tampered, the content information may not be displayed and notification that the content information has been tampered with may be sent. And secure information communication.

  In order to solve the above-described problem, according to another aspect of the present invention, an advertisement medium and an information medium that incorporates an information storage device that stores content information and meta-information that can be communicated with an external device in a non-contact manner are provided. An information reading device capable of reading the content information by communicating information in a contact manner; determining the tampering status of the read content information and determining that the content information has not been tampered with; A program for executing a content information determination procedure for validating the content information is provided.

  In order to solve the above problems, according to another aspect of the present invention, there is provided a program providing server capable of distributing a program to an information processing apparatus via a communication network, and is capable of communicating information with an external device in a contactless manner. Information reading device capable of reading content information in a non-contact manner and communicating with an advertisement medium incorporating an information storage device storing content information and meta information capable of being read; falsification of read content information A program providing server that provides a program that executes a content information determination procedure that validates read content information when it is determined that the content information has not been tampered with.

  As described above, according to the present invention, content information related to an advertisement described in an advertisement medium is stored in an information storage device capable of non-contact information communication, and the stored content information is altered. It is possible to provide the user with content information that has not been tampered with. In addition, by adding meta information related to content information, it becomes possible to provide information with higher added value than simply providing content information.

  In addition, more information than conventional advertising media can be provided, and the information can be provided safely by a simple method.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  First, a schematic configuration of the information providing system according to the present embodiment will be described with reference to FIG. FIG. 1 is a schematic diagram illustrating an information providing system according to this embodiment. As shown in FIG. 1, the information providing system according to the present embodiment includes at least an advertising medium 100, an information storage device 200, and an information reading device 300.

  The advertisement medium 100 is a medium in which information to be advertised is described, and is, for example, a poster posted at a station or a department store. The information storage device 200 is an IC card, an IC tag, or the like that is incorporated in the advertising medium 100, can perform information communication in a non-contact manner, and can store information electronically. The information storage device 300 stores electronic data such as content information and meta information related to the advertising medium 100. The information reading device 300 can read information stored in the IC card or IC tag using electromagnetic waves. For example, the information reading device 300 can be a mobile phone as a mobile terminal, a PDA (Personal Digital Assistant), or the like. May be provided.

  The user 500 has a mobile terminal equipped with the information reading device 300. The user 500 brings the mobile terminal provided with the information reading device 300 close to the information storage device 200 incorporated in the advertising medium 100 of interest. Here, the information storage device 200 is a device that does not require a battery, and receives power supply energy by radio waves from the information reading device 300.

  Since the information storage device 200 and the information reading device 300 can communicate information in a non-contact manner, content information, meta information, and the like stored in the information storage device 200 are transmitted to the information reading device 300. The information reading device 300 that has received the content information, meta information, or the like determines whether the received content information has been tampered with, and if it has not been tampered with, the content information is output to the information reading device 300.

  Here, examples of methods for performing information communication in a non-contact manner include NFC communication technology (Near Field Communication Technology), Bluetooth, and wireless LAN.

  In the present embodiment, in order for the user 500 to reliably acquire desired data from the information storage device 200, the information storage device 200 and the information reading device 300 need to communicate in a non-contact manner within a narrow range. is there.

  The NFC communication technique has a narrow communication distance of about 10 cm as a communicable range as compared with Bluetooth and wireless LAN. For example, as shown in FIG. 1, when several advertising media are posted side by side, if the NFS communication technology is used, the communication range 600 of the information storage device 200 becomes the communication range of another information storage device 210. The user 500 can communicate securely and safely only with the information storage device 200 without overlapping with 610.

  In addition, as wireless communication capable of near field communication such as NFS communication technology, there are an infrared method (IrDa: InfraRed Data Association), a QR code that is a two-dimensional barcode, and the like.

  The IrDa is difficult to use outdoors under direct sunlight because of communication using light components. In addition, power transmission using a carrier wave is difficult, and a configuration having a power source must always be adopted. In addition, the QR code needs to use image recognition by a visual recognition device, and positioning is difficult. Furthermore, if the barcode gets dirty when used outdoors, correct information cannot be emitted.

  Therefore, in the present embodiment, it is preferable to use the NFS communication technology in order to perform wireless communication reliably and safely in a non-contact manner within a narrow range and regardless of outdoors.

  The outline of the information provision system has been described above. Next, based on FIG. 2, the structure of the information provision system concerning this embodiment is demonstrated. FIG. 2 is a block diagram showing the configuration of the information providing system in this embodiment.

  The information providing system according to this embodiment includes at least an advertising medium 100, an information storage device 200, and an information reading device 300, and further includes an advertising medium manufacturing device 400.

  As described above, the advertising medium 100 is a medium in which information to be advertised is described, and is, for example, a poster posted at a station or a department store. The information storage device 200 is an IC card, an IC tag, or the like that is incorporated in the advertising medium 100, can perform information communication in a non-contact manner, and can store information electronically. The information storage device 300 stores electronic data such as content information and meta information related to the advertising medium 100. The information reading device 300 can read information stored in the IC card or IC tag using electromagnetic waves. For example, the information reading device 300 can be a mobile phone as a mobile terminal, a PDA (Personal Digital Assistant), or the like. May be provided.

  Further, the advertisement medium manufacturing apparatus 400 generates content information related to the advertisement medium, meta information, and a message digest obtained by converting the content information and / or meta information by an irreversible algorithm, and the information storage apparatus 200. Remember me. Further, the content information and / or meta information and / or message digest may be encrypted and stored in the information storage device 200. Further, the content information and / or meta information may be encrypted using a secret key of a public key encryption algorithm and stored in the information storage device 200.

  The information storage device 200 is incorporated in the advertising medium 100, and the information storage device 200 includes a storage unit 210, a control unit 230, and a wireless communication unit 220. The storage unit 210 stores content information 211 related to the advertising medium 100 and certificate data 212. The certificate data 212 includes meta information 212a and a proof source message digest 212b. The meta information 212a is information related to the content, such as the advertiser name and contact information, the creation date and time of the content information, the expiration date, R designation information, pay / free information, language information, and the like. By adding the meta information, it is possible to set the expiration date of the content information 211 and to set the R designation information.

  In the proof source message digest 212b, content information and / or meta information is converted by an irreversible algorithm and stored. An irreversible algorithm is an irreversible one-way function such as a hash function. In other words, the content information cannot be reproduced from the message digest converted by the irreversible algorithm, and it is very difficult to create different data having the same proof source message digest. Therefore, when data is transmitted and received, it is possible to check whether the data has been falsified by converting the data at both ends of the communication path using an irreversible algorithm and comparing the converted values (message digest) of the two.

  The wireless communication unit 220 wirelessly communicates with the information reading device 300 in a non-contact manner using NFC communication technology, and transmits the content information 211 and the certificate data 212 stored in the storage unit 210 to the information reading device 300. Send to. The control unit 230 performs control to transmit the content information 211 and the certificate data 212 stored in the storage unit 210 to the information reading device 300 via the wireless communication unit 220.

  The information reading device 300 includes a wireless communication unit 310, an output unit 320, a control unit 330, a determination device 340, and a storage unit 350.

  The wireless communication unit 310 wirelessly communicates with the information storage device 200 in a non-contact manner using NFC communication technology, and the content information 211 stored in the storage unit 210 and the certificate data 212 are transmitted to the wireless communication unit 220. Receive via.

  The determination device 340 converts the content information 211 and / or the meta information 212a with an irreversible algorithm, creates a verification message digest, compares the proof source message digest and the verification message digest, and the two match. In this case, it is determined that the content information has not been falsified.

  As described above, an irreversible algorithm is an irreversible one-way function such as a hash function. Content information cannot be reproduced from a proof source message digest converted by an irreversible algorithm, and it is extremely difficult to create different content information having the same proof source message digest. Therefore, when data is sent and received, the data is not falsified if the data is converted at both ends of the communication path using an irreversible algorithm, and the converted message digest and the verification message digest are compared. You can find out.

  Also, the expiration date of the content information 211 and the R designation information are confirmed based on the meta information 212a. The falsification determination method for the content information 211 and the confirmation method for the meta information 212a will be described later.

  When the determination device 340 determines that the content information 211 has not been tampered with, the output unit 320 displays the content information 211 or notifies that the content information 211 has not been tampered with. A user having the information reading apparatus 300 refers to the content information 211 displayed on the output unit 320. For example, if the content information 211 is a homepage address for accessing a homepage related to the advertising medium 100, the user can access the homepage address by referring to the homepage address displayed on the output unit 320. It becomes possible.

  The storage unit 350 stores the content information 211 determined by the determination device 340 as not tampered with. For example, the user may be interested in the advertising medium 100 and read the content information 211 stored in the information storage device 210 by the information reading device 300, but the read content information 211 cannot be referred to immediately. Conceivable. In this case, the content information 211 is stored in the storage unit 350, and the user can refer to the stored content information 211 later when there is time. Even if the content information 211 has been referred to once, it may be referred to again later. Even in this case, if the content information 211 is stored in the storage unit 350, the user can refer to the content information 211 any number of times.

  Further, the referenced content information 211 may be automatically stored in the storage unit 350. The content information 211 stored in the storage unit 350 may be selected and deleted by the user, or content information 211 that has not been referred to for a long time or old content information 211 is automatically deleted. May be.

  The control unit 330 provides the content information 211 received via the wireless communication unit 310 and the certificate data 212 to the determination device 340. When the determination device 340 determines that the content information 211 has not been tampered with, The content information 211 is provided to the output unit 320. Further, when the determination device 340 determines that the content information 211 has not been tampered with, the storage unit 350 performs control to store the content information.

  The advertisement medium manufacturing apparatus 400 includes a content information generation apparatus 410 and a digital certificate generation apparatus 420. The content information generation device 410 generates content information 211 related to the advertising medium 100 and stores the content information 211 in the storage unit 210 of the information storage device 200. The digital certificate generation device 420 generates meta information 212a related to the content information 211 generated by the content information generation device 410, converts the content information 211 and / or the meta information 212a by an irreversible algorithm, A message digest 212b is generated.

  In addition, the digital certificate generation device 420 stores the generated meta information 212 a and proof source message digest 212 b in the storage unit 210 of the information storage device 200. Here, the meta information 212a and the certification source message digest 212b may be used as the digital certificate 212 of the content information.

  Further, the digital certificate 212 generated by the digital certificate generation apparatus 420 may be provided to the content information generation apparatus 410. The content information generation device 410 provided with the digital certificate 212 may store the digital certificate 212 in the storage unit 210 of the information storage device 200 together with the content information 211.

  The configuration of the information providing system has been described above. Next, content information and certificate data according to the present embodiment will be described.

  3 to 5 are diagrams illustrating content information and certificate data in the present embodiment. As described above, the content information is information related to the advertising medium and can be recorded electronically. For example, the content information may be a sound or an image related to the information on the advertising medium, or it may take time to copy it. It may be a homepage address or map information that is difficult to keep in memory.

  As shown in FIGS. 3 to 5, the certificate data 212 includes meta information 212a-1 to 212a-5 and a proof source message digest 212b. The meta information 212a-1 to 212a-5 is information related to the advertisement medium or the content information 211. For example, the date and time 212a-1, the expiration date 212a-2, the R designation information 212a-3, the creation date of the content information 211, Paid free information 212a-4, content provider information 212a-5, and the like are included.

  The expiration date 212a-2 is data for setting a date and time when the content information can be read. For example, the expiration date 212a-2 referring to the content information is set to “July 7, 2004”, and the user performs data communication in a non-contact manner using the information reading device on “July 8, 2004”. The user cannot refer to the content information 211 even if the content information is received. Further, when the user reads the content information, the user may be notified that the expiration date of the content information has passed.

  In addition, by setting the R designation information 212a-3, users who can refer to the content information can be restricted by age or the like. For example, when “1” is set in the R designation information 212a-3, it is assumed that the content information 211 is R designation. On the information reading device side that receives the content information, whether or not the information reading device is a device that can refer to the content information designated by R is set in advance. When “1” is set in the R designation information 212a-3, if the information reading device that receives the content information 211 is a device that can refer to the R designation information, the content information 211 is displayed. For example, the content information 211 can be prevented from being displayed.

  In the paid / free information 212a-4, it can be set whether the reference of the content information 211 is paid or free. For example, it is assumed that “pay” is set in the pay / free information 212a-4. The information reading apparatus that has received the content information 211 can notify the user that the content information 211 is charged.

  The content provider information 212a-5 stores information on the provider of the content information 211. For example, the company name of the provider of the content information 211 and the address of the provider are stored.

  As shown in FIG. 3, the proof source message digest 212b is a value obtained by converting the content information 211 and the meta information 212a-1 to 212a-5 by an irreversible algorithm. As described above, since the irreversible algorithm is an irreversible one-way function such as a hash function, the content information 211 cannot be reproduced from the proof source message digest 212b converted by the irreversible algorithm. In addition, it is extremely difficult to create different data having the same proof source message digest 212b. Therefore, when data is transmitted and received, it is possible to check whether the data has been falsified by converting the data at both ends of the communication path using an irreversible algorithm and comparing the converted values (message digest) of the two.

  Furthermore, it becomes possible to encrypt and transmit the content information 211 more securely by encrypting the proof source message digest 212b shown in FIG. When the proof source message digest 212b is encrypted and transmitted to the information reading device, the information reading device decrypts the encrypted proof source message digest 212b.

  Further, when the content information 211 and / or the meta information 212a-1 to 212a-5 are encrypted using the secret key of the public key encryption algorithm, the content information 212 and the meta information 212a-1 to 212a-5 are changed. The decryption may be performed using the corresponding public key.

  Thereafter, in the information reading device, the content information 211 is converted by an irreversible algorithm to generate a verification message digest, and the decrypted proof source message digest 212b is compared with the verification message digest. If the proof source message digest 212b and the verification message digest are the same, it can be determined that the content information 211 has not been tampered with.

  Further, as shown in FIG. 4, the content information 211 may be converted by an irreversible algorithm to generate the proof source message digest 212. Further, the certificate data 212 including the certification source message digest 212b and the meta information 212a-1 to 212a-5 may be encrypted.

  Further, as shown in FIG. 5, the content information 211 may be converted by an irreversible algorithm to generate a proof source message digest 212, and the content information 211 and the certificate data 212 may be encrypted.

  In any of the cases shown in FIGS. 3 to 5, by encrypting, more secure information communication can be performed as compared with the case where no encryption is performed. Further, when the embodiment of FIG. 4 is compared with the embodiment of FIG. 5, the embodiment of FIG. 5 that encrypts all data to be transmitted can perform more secure information communication.

  However, if the encryption as described above is performed, it takes time until the content information is read by the information reader, decrypted and output. In addition, if the amount of data to be encrypted increases, the time until the data is further decrypted and output becomes longer.

  Therefore, if it is only determined that the content information 211 has not been tampered with, the data may be transmitted together with the proof source message digest without being encrypted. On the other hand, when the data transmitted after being encrypted is read by the information reader, a key for decrypting the data is required, so that more secure information communication can be performed.

  The content information and certificate data have been described above. Next, a method for determining content information and certificate data in the determination device provided in the information reading device when the content information and certificate data are read by the information reading device will be described. FIG. 6 is a flowchart for explaining a determination method of content information and certificate data in the determination apparatus.

  As described above, the information reading device that has communicated with the information storage device in a non-contact manner acquires the content information, meta information, and proof source message digest stored in the information storage device (S101). The determination device of the information reading device converts the content information and / or meta information acquired in step S102 with an irreversible algorithm, and creates a verification message digest (S103).

  Next, the verification source message digest transmitted from the information storage device is compared with the verification message digest created by the determination device (S103). As a result of the comparison in step S103, it is determined whether the content information is correct (S104). Here, if the certification source message digest and the verification message digest are the same, it is determined that the transmitted content information has not been tampered with. If the certification source message digest and the verification message digest are different, the content information has been tampered with, and the process is terminated (S105).

  If it is determined in step S104 that the transmitted content information is correct (not falsified), it is determined whether the content information is data within the expiration date (S106). Here, the expiration date of the content information is included in the transmitted meta information. The expiration date of the meta information is compared with the date when the information reading device reads the content information, and the expiration date of the content information is determined. It is determined whether or not the data is within. If it is determined that the transmitted content information is not within the expiration date, the process is terminated (S107).

  If it is determined in step S104 that the transmitted content information is data within the expiration date, it is determined whether the content information is R designation information (S108). The R designation information of the content information is included in the transmitted meta information. If the transmitted content information is not R designation information, the content information is displayed on the output unit of the information reading device (S111).

  If it is determined in step S108 that the transmitted content information is R designation information, the setting of the user terminal provided with the information reading device is a setting that can refer to the content information of the R designation information. (S109). In step S109, if the setting of the user terminal is not a setting that can refer to the content information of the R designation information, the process ends (S110). On the other hand, in step S109, when the setting of the user terminal is set to refer to the content information of the R designation information, the content information is displayed on the output unit of the information reading device (S111).

  The content information and certificate data determination method in the determination apparatus has been described above. Next, a display example in the output unit of the information reading apparatus will be described. FIG. 7 is a display example of the output unit of the information reading device when the information reading device and the information storage device perform information communication in a non-contact manner.

  The information reading device activates an application for receiving content information in order to perform information communication with the information storage device in a non-contact manner. As shown in FIG. 7, the menu of the display example 300-1 is first displayed on the output unit of the information reading apparatus. When “content reception” is selected from the menu, an application for receiving content information is called. The display example 300-2 is a display example for notifying that the content information receiving application is being called.

  When an application for receiving content information is called, a screen (table) that prompts the information reading device to contact the information storage device in order to perform information communication with the information storage device in a non-contact manner using NFC communication technology. Example 300-3) is displayed.

  Next, by bringing the information reading device into contact with the information storage device, the information reading device and the information storage device communicate information in a non-contact manner, and the content information is read out. From the read content information, it is determined whether or not the content information has been tampered with by the information reading device. The display example 300-4 is a display example for notifying that alteration of content information has been determined. When it is determined that the content information has not been tampered with, the content information read by the information reading device is displayed (display example 300-5).

  Next, a display example in the output unit of the information reading device when referring to the content information stored in the storage unit of the information reading device again will be described. As shown in FIG. 8, the “menu” of the display example 300-6 is first displayed on the output unit of the information reading apparatus. When “content reception” is selected from “menu”, an application for receiving content information is called. A display example 300-6 is a display example for notifying that the content information receiving application is being called.

  When an application for receiving content information is called, a screen (table) that prompts the information reading device to contact the information storage device in order to perform information communication with the information storage device in a non-contact manner using NFC communication technology. Example 300-3) is displayed. Here, when “Data” in the display example 300-3 is selected, a data menu for selecting the type of “data” is displayed (display example 300-9).

  For example, it is assumed that “movie” is selected from the display example 300-9. The information reading device displays the content information stored in the storage unit (display example 300-10). For example, when several pieces of content information related to a movie are stored, one may be selected from the stored content information related to “movie”. A display example 300-11 is a display example in which selected content information is displayed.

  In the above, the example of a display in the output part of an information reader was demonstrated. Next, a description will be given of how content information and a digital certificate are generated and stored. FIG. 9 is a timing chart for explaining the process until content information and a digital certificate are generated and stored.

  First, content information is generated in the content information generation device 410 (S201). Here, the content information is content information related to the advertisement medium as described above. The content information generated in step S201 is provided to the information storage device 200 and the digital certificate generation device 420 (S202). The information storage device 200 provided with the content information from the content information generation device 410 stores the content information in the storage unit of the information storage device 200 (S203).

  Also, the digital certificate generation device 420 provided with the content information from the content information generation device 410 converts the content information by an irreversible algorithm, and creates a proof source message digest. Then, the meta information related to the content information and the proof source message digest are generated as a digital certificate (S204).

  The digital certificate generated in step S204 is provided to the information storage device 200 (S205). The information storage device 200 provided with the digital certificate from the digital certificate generation device 420 stores the digital certificate in the storage unit of the information storage device 200 (S206).

  FIG. 10 is a timing chart for explaining content information and a digital certificate until they are generated and stored in an embodiment different from FIG.

  First, content information is generated in the content information generation device 410 (S310). The content information generated in step S301 is provided to the digital certificate S303.

  The digital certificate generation device 420 provided with the content information from the content information generation device 410 converts the content information using an irreversible algorithm, and generates a proof source message digest. Then, the meta information related to the content information and the certification source message digest are generated as a digital certificate (S303).

  The digital certificate generated in step S304 is provided to the content information generating apparatus 410 (S304). The content information generation device 410 provided with the digital certificate from the digital certificate generation device 420 provides the content information and the digital certificate together to the information storage device (S305).

  The information storage device 200 provided with the content information and the digital certificate from the content information generation device 410 stores the content information and the digital certificate in the storage unit of the information storage device 200 (S306).

This completes the description of the process until content information and a digital certificate are generated and stored.
Next, transmission / reception of content information and a digital certificate between the information storage device and the information reading device will be described. FIG. 11 is a timing chart illustrating transmission / reception of content information and a digital certificate between the information storage device 200 and the information reading device 300.

  As shown in FIG. 11, the information reading device 300 activates an application for reading data stored in the information storage device 200 in order to perform information communication with the information storage device 200 in a non-contact manner (S401). ). Next, the information reading device 300 issues a content information and digital certificate acquisition request to the information storage device 200 (S402).

  In step S402, when an acquisition request for content information and a digital certificate is issued from the information reading device 300, the information storage device 200 transmits the content information and the digital certificate to the information reading device 300 (S403). When receiving the content information and the digital certificate (S404), the information reading apparatus 300 determines the message digest included in the digital certificate (S406).

  As described above, the message digest transmitted from the information storage device 200 is a proof source message digest converted by an irreversible algorithm. An irreversible algorithm is an irreversible one-way function such as a hash function, and content information cannot be reproduced from a proof source message digest converted by an irreversible algorithm, and has the same proof source message digest. It is extremely difficult to create different content information. Therefore, in step S405, the content information transmitted by the information reading device 300 is converted by an irreversible algorithm, a verification message digest is created, and the proof source message digest and the verification message digest are compared. You can check for tampering.

  If it is determined by the message digest determination in step S405 that the content information has not been tampered with, the received content information is displayed on the output unit of the information reading apparatus 300 (S406). If it is determined in step S406 that the content information has not been tampered with, the received content information is stored in the content information storage unit (S407).

  The transmission / reception of content information and a digital certificate between the information storage device 200 and the information reading device 300 has been described above. As described above, the content information generation device 410 and the digital certificate generation device 420 included in the advertisement medium manufacturing apparatus 400 may be included in one advertisement medium manufacturing apparatus, but are separate advertisement medium manufacturing apparatuses. May be included.

  For example, the content information generation apparatus is provided on the advertisement medium generation company side that creates an advertisement medium such as a poster, and the digital certificate generation apparatus is provided on the IC card generation company side that generates an IC card or the like. It may be done.

  In addition, the digital certificate format and the irreversible algorithm that converts the message digest are not disclosed so that the digital certificate can be generated only by the IC card generation company, thereby making the digital certificate safe. As a result, the transmission and reception of content information in the present embodiment can be performed more securely.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  In the present embodiment, the information storage device is incorporated in an advertising medium such as a poster, but the present invention is not limited to such an example. For example, the information storage device may be incorporated in a small business card size medium instead of a large advertising medium such as a poster. For example, if an information storage device is incorporated in a business card, when exchanging business cards, information written on the business card may be read by the information reading device and stored in the storage unit of the information reading device. In addition, information stored in the information reading device can be downloaded to a PC (Personal Computer), and the information written on the business card can be managed on the PC.

  When you visit a restaurant, you may bring back a card with information about the restaurant. Even in such a case, it is possible to refer to the restaurant information at any time by incorporating the information storage device into the card, reading it with the information reading device, and accumulating the restaurant information.

  Furthermore, an information storage device can be incorporated in a magazine, for example, store map information can be stored in the information storage device, and the map information can be read by the information reading device. If the store map information is stored in the storage unit of the information reader, it is possible to acquire the map information of the store if the information reader is provided without carrying a magazine.

  The present invention is applicable to an information providing system, an information storage device, an advertising medium, an advertising medium manufacturing device, a program, and a program providing server capable of non-contact information communication.

It is the schematic explaining the information provision system in this embodiment. It is a block diagram which shows the structure of the information provision system in the embodiment. It is a figure explaining the content information and certificate data in the embodiment. It is a figure explaining the content information and certificate data in the embodiment. It is a figure explaining the content information and certificate data in the embodiment. It is a flowchart explaining the determination method of the content information and certificate data in the determination apparatus in the embodiment. It is an example of a display of the output part of the information reading apparatus in the embodiment. It is an example of a display of the output part of the information reading apparatus in the embodiment. 6 is a timing chart for explaining a process until content information and a digital certificate are generated and stored in the embodiment. 6 is a timing chart for explaining a process until content information and a digital certificate are generated and stored in the embodiment. 4 is a timing chart for explaining transmission / reception of content information and a digital certificate in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Advertising medium 200 Information storage device 211 Content information 212a Meta information 212b Proof source message digest 300 Information reader 340 Judgment device 400 Advertising medium manufacturing apparatus

Claims (14)

An advertisement medium in which an information storage device storing content information and meta information capable of non-contact information communication with an external device is incorporated;
An information providing system comprising: an information reader capable of reading the content information and meta-information in non-contact information communication with the information storage device:
The information reading device includes a content information determination device. When the determination device determines whether or not the read content information has been tampered with and the content information has not been tampered with , the determination device further includes Accordingly, the determining the validity of the content information, wherein when said contents information based on the meta information that is effective has been found, read enable content information, the information providing system based on the meta information.   The meta information includes expiration date information of the content information,
  2. The information provision according to claim 1, wherein the determination device determines that the content information is valid when it is determined that the content information is data within the expiration date based on the expiration date information. system.   The meta information includes R designation information of the content information,
  The information reading device is set as to whether or not the information reading device is a device that can refer to the content information designated by R.
  The determination device determines, based on the R designation information, when the content information is not R designation information, and when the content information is R designation information and the information reading device is R designation. 3. The information providing system according to claim 1, wherein the content information is determined to be valid when it is determined that the device can refer to the content information. (Advertising medium)
An advertising medium incorporating an information storage device storing content information and meta-information capable of non-contact information communication with an external device;
The information storage device stores a proof source message digest obtained by converting content information and meta information by an irreversible algorithm ,
The meta-information includes information used to determine the validity of the content information in the external device, an advertising medium.   The advertisement medium according to claim 4, wherein the meta information includes expiration date information of the content information.   The advertisement medium according to claim 4, wherein the meta information includes R designation information of the content information. (Advertising media production equipment)
A manufacturing apparatus for manufacturing an advertising medium in which an information storage device storing content information and meta information capable of non-contact information communication with an external device is incorporated;
In the information storage device stores the certificate original message digest obtained by converting the content information and the meta information by irreversible algorithm,
The apparatus for manufacturing an advertising medium, wherein the meta information includes information used to determine the validity of the content information in the external device.   The advertisement medium manufacturing apparatus according to claim 7, wherein the meta information includes expiration date information of the content information.   The advertisement medium manufacturing apparatus according to claim 7 or 8, wherein the meta information includes R designation information of the content information. (Information reader)
Non-contact information can be communicated with an advertising medium incorporating an information storage device storing content information and meta information that can be communicated with external devices in a non-contact manner, and the content information and meta information can be read. An information reader;
A content information determination device, wherein the determination device determines whether or not the read content information has been tampered with, and if it is determined that the content information has not been tampered with , the determination device further adds the meta information to the meta information. the validity of the content information is determined based, in the case where the content information based on the meta-information that is effective has been found to enable the read content information, the information reading apparatus.   The meta information includes expiration date information of the content information,
  The information reading according to claim 10, wherein the determination device determines that the content information is valid when it is determined that the content information is data within the expiration date based on the expiration date information. apparatus.   The meta information includes R designation information of the content information,
  The information reading device is set as to whether or not the information reading device is a device that can refer to the content information designated by R.
  The determination device determines, based on the R designation information, when the content information is not R designation information, and when the content information is R designation information and the information reading device is R designation. 12. The information reading device according to claim 10, wherein the content information is determined to be valid when it is determined that the device can refer to the content. (Information reading device program)
An external device and the non-contact type enables information communication content information and meta-information to the information communicated to the advertising medium stored information storage device is integrated contactless, capable of reading the content information and the meta information An information reader;
When the tampering status of the read content information is determined, and it is determined that the content information has not been tampered with, the validity of the content information is further determined based on the meta information, and the content information is determined based on the meta information. A program for executing a content information determination procedure for validating read content information when it is found to be valid . (Program distribution server)
A program providing server capable of distributing a program to an information processing apparatus via a communication network,
The program is to the information communicated to the external device and the noncontact content information and the meta information that can be information communication is stored information storage device integrated advertising media and a non-contact type, the content information and the meta information An information reader capable of reading
When the tampering status of the read content information is determined and it is determined that the content information has not been tampered with, the validity of the content information is further determined based on the meta information, and the content information is determined based on the meta information. If it is valid it has been found, to execute the content information decision procedures for enabling the read content information, the program providing server.

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