JP2006319506A - Information carrying sheet, manufacturing and issuing method and manufacturing issuing system for the sheet, authenticity determination method and authenticating system for information carrying sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information-carrying sheet having an analog security technique and a digital security technique and giving a discrete information composed of a random number and a digital signature to the random number, a manufacturing and publishing method and a manufacturing and publishing system for the sheet, and a truth-falsehood discriminating method and a truth-fasehood discriminating system for the sheet. <P>SOLUTION: The manufacturing and publishing method for the sheet given the discrete information is composed of a step of generating digital signature type digital-signature generating key and digital-signature verifying key, generating a new random number different from a known random number generated in the past, and generating a new digital signature from the new random number and the digital-signature generating key. The manufacturing and publishing method for the sheet is further composed of the step converting the collection of informations composed of the new random number and the new digital signature and giving the sheet with the converted collection, and reading the given informations. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information carrying sheet, a manufacturing and issuing method and a manufacturing and issuing system for the sheet, an authenticity determining method and an authenticating system for an information carrying sheet.

  Conventionally, sheets such as gift certificates or securities have been designed to prevent counterfeiting by using analog security technology such as special processing method or special design design when applying rare materials or materials that are difficult to obtain. It was.

  In addition, many methods for preventing tampering using a digital security technique called digital watermark have been proposed (see, for example, Non-Patent Document 1).

  Furthermore, as a method combining analog security technology and digital security technology, information obtained by cryptographically processing the information obtained from the fiber generated by embedding the fiber is used as the medium. A method has been proposed in which the medium is determined to be genuine when it is determined that the relationship between the two types of information is valid (see, for example, Patent Document 1 and Patent Document 2). This method requires confidential information to perform certain cryptographic processing on random information, but it is difficult for a person who does not know the information to forge even if it is an issuer. It has characteristics.

  Also, by adopting information (NC information) that has no correlation between individual information and individual information, it is impossible to infer the other information from one information, so when and where the sheet is used There is a technique that can detect the presence of a sheet having the same individual information by managing such information (see, for example, Patent Document 3).

  When these methods are used, issuer A and issuer B are separated into issuer A and issuer B in order to prevent issuer's fraud. Even if the secret of the digital security technology is managed, the above invention must give the medium encrypted information for random information obtained in the middle of manufacture. (1) Issuing person B issues random information Is issued to the issuance manager A, and the issuance manager A encrypts the information and sends the resulting information to the issuance manager B. The issuance manager B receives the information sent from the issuance manager A. (2) Issuing person B sends a medium for obtaining random information to issuance person A, and issuance person A reads the random information, encrypts it, and assigns it to the medium. Where There is a need to perform, there is a problem that must be taken how time-consuming to work.

Deep image encryption (author: Kokoo Matsui, publisher: Morikita Publishing Co., Ltd.) Japanese Patent No. 2821352 Japanese Patent No. 2821367 JP 2002-83274 A

  However, resolving important issues that could destroy the social credibility of counterfeiting depended, for example, on morality based on the trustworthiness of the merchants of the merchandise store and the customer, or the issuer and manufacturer. .

  The present invention has been made in view of the above problems, and in the production and issuance of an information carrying sheet in which security-specific individual information is embedded, the issuance manager A and the issuance manager B perform analog security technology and digital Information management sheet to which individual information is given by printing technology by clarifying the responsibilities of issuer A and issuer B by managing each security technology, manufacturing and issuing method and manufacturing of the sheet It is an object of the present invention to provide an issue system, an information carrying sheet authenticity determination method, and an authenticity determination system.

  The manufacturing and issuing method for an information carrying sheet according to the present invention is a method for manufacturing and issuing a sheet to which individual information has been assigned, which generates a digital signature generation digital signature generation key and a digital signature verification key, and generates a new random number. A step of generating a new digital signature from the new random number and the digital signature generation key, a step of converting a set of information composed of the new random number and the new digital signature and giving the sheet a sheet It is characterized by comprising.

  The information carrying sheet manufacturing and issuing system according to the present invention is a sheet manufacturing and issuing system to which individual information is attached, and a digital signature generation terminal and a printing technology applying terminal are connected to each other via a communication network. The digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a transmission unit. The digital signature calculation unit generates a digital signature type digital signature generation key, a digital signature verification key, and a random number. Comparing the known random number recorded in the signature recording unit with the generated random number, repeating the comparison between the random number generation and the known random number until a new random number is generated, and further, the new random number and the digital signature generation key Generating a new digital signature from the digital signature recording unit, the digital signature generation key, The digital signature verification key and the new random number are recorded, and the transmission unit transmits the new random number and the new digital signature to the printing technology granting terminal. The printing technology granting terminal is a receiving unit, a printing technology calculation And the printing technology giving unit, the receiving unit receives the new random number and the new digital signature sent from the digital signature generating terminal, and the printing technology computing unit receives the new random number and the new digital signature. Is converted to data to be applied to the sheet, and the printing technology applying unit applies the converted data to the sheet using a printing technology.

  The information carrying sheet manufacturing and issuing system according to the present invention is a sheet manufacturing and issuing system to which individual information is attached, and a digital signature generation terminal and a printing technology applying terminal are connected to each other via a communication network. The digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a transmission unit. The digital signature calculation unit generates a digital signature type digital signature generation key, a digital signature verification key, and a random number. Comparing the known random number recorded in the signature recording unit with the generated random number, repeating the comparison between the random number generation and the known random number until a new random number is generated, and further, the new random number and the digital signature generation key Generating a new digital signature from the digital signature recording unit, the digital signature generation key, A digital signature verification key and the new random number are recorded, and the transmission unit transmits the new random number and the new digital signature to the printing technology granting terminal. The printing technology granting terminal is a receiving unit, a printing technology record A new print random number sent from the digital signature generating terminal and the new digital signature, and the print technology recording unit receives the new random number. And a pre-printing database with printing technology that includes the set of the new digital signature and the usage history of the set, and the printing technology calculation unit uses the new random number and the new digital signature as data for adding to the sheet. Converted into a recorded random number and recorded digital signature recorded in the data, and further referring to the printing technology recording unit The recording random number, the presence of the recorded digital signature, and the usage history confirm whether or not the sheet to which the data is attached can be manufactured and issued, and the printing technology assigning unit uses the printing technology to convert the converted data to the sheet It is characterized by giving to.

  The information carrying sheet manufacturing and issuing system according to the present invention is a sheet manufacturing and issuing system to which individual information is attached, and a digital signature generation terminal and a printing technology applying terminal are connected to each other via a communication network. The digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a digital signature transmission / reception unit. The digital signature calculation unit performs a digital signature generation digital signature key, a digital signature verification key, and a random number generation. The known random number recorded in the digital signature recording unit is compared with the generated random number, and the comparison between the random number generation and the known random number is repeated until a new random number is generated, and the new random number and the digital signature generation are further performed. A new digital signature is generated from the key, and further sent from the printing technology granting terminal. Whether the recording random number and the recording digital signature are recorded on the sheet from the presence and usage history of the random number and the recording digital signature, or whether the new random number and the new digital signature are transmitted again. When confirming with the digital signature recording unit and issuing an instruction to give, the usage history is changed. In the digital signature recording unit, a set of a digital signature generation key, a digital signature verification key, the new random number, and the new digital signature A digital signature generation pre-print database comprising a set usage history is recorded, and the digital signature transmission / reception unit transmits the new random number and the new digital signature to the printing technology granting terminal, and the recording random number and the recorded digital signature Is received from the printing technology terminal, and the recorded random number and the recording technology are given to the printing technology granting terminal. The printing technology granting terminal includes a printing technology transmitting / receiving unit, a printing technology calculating unit, and a printing technology giving unit, and the printing technology sending / receiving unit includes the digital signature generating terminal. Receiving the new random number and the new digital signature sent from the terminal, transmitting the recorded random number and the recorded digital signature to the digital signature generating terminal, and sending the recorded random number and the recorded digital signature from the digital signature generating terminal. The print technology calculation unit converts the new random number and the new digital signature into data for adding to the sheet, and the recorded random number recorded in the data and Decoding the recorded digital signature and attaching data to the sheet received from the digital signature generation terminal In response to the instruction, an instruction for giving data is issued to the printing technique giving unit, and the printing technique giving unit gives the converted data to the sheet using a printing technique.

  The information carrying sheet manufacturing and issuing system according to the present invention is a sheet manufacturing and issuing system to which individual information is attached, and a digital signature generation terminal and a printing technology applying terminal are connected to each other via a communication network. The digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a transmission unit. The digital signature calculation unit generates a digital signature type digital signature generation key, a digital signature verification key, and a random number. Comparing the known random number recorded in the signature recording unit with the generated random number, repeating the comparison between the random number generation and the known random number until a new random number is generated, and further, the new random number and the digital signature generation key A new digital signature is generated from the digital signature recording unit, and the digital signature recording unit generates a digital signature generation key and a digital The signature verification key and the new random number are recorded, and the transmission unit transmits the new random number and the new digital signature to the printing technology granting terminal. The printing technology granting terminal is a receiving unit, a printing technology recording unit A printing technology calculation unit, a printing technology giving unit, and a printing technology reading unit, and the receiving unit receives the new random number and the new digital signature sent from the digital signature generation terminal, and records the printing technology record. The printing technology-given database including the set of the new random number and new digital signature and the usage history of the set, and the printing technology calculation unit assigns the new random number and the new digital signature to the sheet. The data is converted to data for further processing, and further includes a given random number and a given digital signature given to the sheet with reference to the printing technology recording unit The printing technology granting unit gives the converted data to the sheet using a printing technology, and the printing technology reading unit gives the assigned random number and the assigned digital signature. It is characterized by reading.

  The information carrying sheet manufacturing and issuing system according to the present invention is a sheet manufacturing and issuing system to which individual information is attached, and a digital signature generation terminal and a printing technology applying terminal are connected to each other via a communication network. The digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a digital signature transmission / reception unit. The digital signature calculation unit performs a digital signature generation digital signature key, a digital signature verification key, and a random number generation. The known random number recorded in the digital signature recording unit is compared with the generated random number, and the comparison between the random number generation and the known random number is repeated until a new random number is generated, and the new random number and the digital signature generation are further performed. Generating a new digital signature from the key and referring to the digital signature recording unit Whether or not the sheet having the assigned random number and the assigned digital signature sent from the technology granting terminal is issued, and the digital signature recording unit includes a digital signature generation key, a digital signature verification key, the new random number, and the new digital signature. A digital signature generation database including a set and a use history of the set is recorded, and the digital signature transmission / reception unit transmits the new random number and the new digital signature to the printing technology granting terminal, and the assigned random number and the grant A digital signature is received from the printing technology terminal, and a confirmation result of whether or not to issue the assigned random number and the assigned digital signature is transmitted to the printing technology granting terminal. The printing technology granting terminal includes a printing technology transmitting / receiving unit, a printing technology Comprising an arithmetic unit, a printing technology granting unit, and a printing technology reading unit. The new random number and the new digital signature sent from the digital signature generation terminal are received, the assigned random number and the assigned digital signature are transmitted to the digital signature generation terminal, and the assigned random number is transmitted from the digital signature generation terminal. And the print technology calculation unit converts the new random number and the new digital signature into data to be added to the sheet, and the print technology grant unit converts the conversion result. The printed data is attached to the sheet using a printing technique, and the printing technique reading unit reads the assigned random number and the assigned digital signature attached to the sheet.

  An authenticity determination method for an information carrying sheet according to the present invention is a method for determining authenticity of a sheet to which individual information is assigned, wherein a step of disclosing a digital signature verification key, and recording an illegal random number and an illegal digital signature in a negative list A step of publishing the negative list, a step of determining whether the verification target random number and the verification target digital signature are in the negative list, and using the digital signature verification key, the verification target random number and the verification target digital And determining whether the signature is valid.

  The authenticity determination system for an information carrying sheet according to the present invention is a authenticity determination system for a sheet to which individual information is assigned, and the digital signature generation terminal, the negative list generation terminal, and the authenticity determination terminal are connected via a communication network. The digital signature generation terminal is connected to each other, and includes a digital signature calculation unit, a digital signature recording unit, and a digital signature transmission unit. The digital signature calculation unit includes a digital signature generation key and a digital signature verification key. The digital signature recording unit records a digital signature generation key and a digital signature verification key, and the digital signature transmission unit transmits the digital signature verification key to the authenticity determination terminal, and the negative list The generation terminal has a negative list recording unit and a negative list transmission unit. The negative list recording unit records an illegal random number and an illegal digital signature in a negative list, and the negative list transmission unit transmits the negative list to the authenticity determination terminal. , A true / false discrimination recording unit, a true / false discrimination reading unit, and a true / false discrimination calculation unit, and the receiver receives the digital signature verification key sent from the digital signature generation terminal and the negative list generation terminal. The true / false discrimination recording unit records the digital signature verification key and the negative list, and the true / false discrimination reading unit records the verification target random number and verification target digital from the individual information area attached to the sheet. A signature is read and the verification target random number and the verification target digital Name is determined whether there are any in the negative list, the verification target random number and the verified digital signature and wherein the determining whether a legitimate using the digital signature verification key.

  In the information carrying sheet of the present invention, the individual information given to the sheet is a set of information composed of a random number and a digital signature for the random number, and is colorless in the visible light source and the ultraviolet long wavelength region, and is in the ultraviolet middle wavelength region and ultraviolet light. It is provided with a material that emits light only in a short wavelength region.

  In the information carrying sheet of the present invention, the individual information given to the sheet is a set of information made up of a random number and a digital signature for the random number, and is given as a special gradation image as a plurality of visible and invisible images. It is characterized by that.

  The sheet manufacturing and issuing method of the present invention is an information carrying sheet in which a set of two or more information related by information is given as individual information, and the individual information is given by a rare material, etc. In addition to unauthorized third parties, the issuer can be separated into issuer A and issuer B to manufacture and issue sheets that can prevent counterfeiting of issuer A and issuer B In addition, anyone can perform authenticity determination of the sheet. Therefore, the present invention can be applied to gift certificates, securities and the like on which various types of information that are generally distributed are recorded.

In this specification, the new random number represents a random number that is generated in the digital signature calculation unit and is different from the random number generated in the past.
The new digital signature represents a digital signature generated from a digital signature generation key generated by the digital signature calculation unit and a new random number.
The known random number represents a new random number generated in the past.
The known digital signature represents a digital signature generated from a digital signature generation key generated by a digital signature calculation unit and a known random number.
The recording random number represents a random number recorded in data to be assigned to the sheet. The recorded digital signature represents a digital signature recorded in data to be added to the sheet.
The assigned random number represents a random number recorded in data attached to the sheet.
The assigned digital signature represents a digital signature recorded in data attached to the sheet.
An illegal random number represents a random number recorded in data attached to an illegally used sheet.
An illegal digital signature represents a digital signature recorded in data attached to an illegally used sheet.
The verification target random number represents a random number recorded in data attached to the verification target sheet.
The verification target digital signature represents a digital signature recorded in data attached to the verification target sheet.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a sheet manufacturing and issuing method and a manufacturing and issuing system to which individual information of the present invention is assigned will be described with reference to the drawings. Embodiments will be described in the order of an information carrying sheet, a manufacturing issuance method, a manufacturing issuance system, a true / false discrimination method, and a true / false discrimination system. In the information carrying sheet used in the present embodiment, the issuance officer A side sends the information created by encrypting the individual information using the digital signature generation key to the issuance officer B side, and receives the received issuance officer B side. Embeds the information in the sheet by a manufacturing method using a printing technique that prevents the forgery with security on the issuer B side based on the information. At this time, by giving some logical security to the information on the issuance manager B side, it becomes possible to produce an information carrying sheet with improved forgery prevention effect.

  (Embodiment 1) FIG. 1 is a figure which shows the Example which used the information carrier sheet of this invention for the gift certificate. The ultraviolet light emitting region 2 of the gift certificate 1 is a material that is colorless in the visible light source and the ultraviolet long wavelength region (near 364 nm) and emits light only in the ultraviolet short wave middle region (near 312 nm) and the short wavelength region (near 254 nm) (for example, Nano Solutions, Inc .: REN-X (trademark) GREEN, REN-X (trademark) RED) is packed in an ink jet printer cartridge, and a set of two or more pieces of information related by a certain piece of information It is converted into a QR code that is a seed and standardized, and is printed by the ink jet printer.

  The QR code does not appear even when the ultraviolet light emitting region 2 in FIG. 1 is irradiated with visible light. On the other hand, as shown in FIG. 2, the QR code 3 appears by irradiating the ultraviolet light emitting region 2 with the wavelength in the ultraviolet light. If the material does not react to the ultraviolet light wavelength and the ultraviolet light short wavelength, even if the material is applied to a part of the ultraviolet light emitting region 2, it becomes invisible when irradiated with the ultraviolet light wavelength or short wavelength, so that only the QR code 3 is used. You will be able to confirm.

  In this embodiment, as a rare material that is difficult to obtain, a material that is colorless in the visible light source and the ultraviolet long wavelength region and emits light only in the ultraviolet middle wavelength region and the short wavelength region is used, and the QR code is read. In some cases, the anti-counterfeiting effect is obtained by adopting a machine reading method utilizing the characteristics of the material.

  This is a rare material that is difficult to obtain. There is a machine reading method that takes advantage of its characteristics. Furthermore, since the information to be printed is individual information, any material that can be printed at high speed is used in this embodiment. The material is not limited to the above.

  The QR code is not limited to a two-dimensional bar code or QR code as long as it can record the amount of information necessary to record the set of information. Also, when the recording capacity of one code is insufficient, various forms such as two or more codes are possible.

  Furthermore, recently, a paper containing an IC has been invented, and it is possible to record the set of information on the IC using a paper containing an IC that is difficult to obtain.

  (Embodiment 2) FIG. 3 shows a special gradation image region 5 of a gift certificate 4 in which 2 is used by using the special gradation image production method disclosed in Japanese Patent Application Laid-Open No. 2001-205917 and Japanese Patent No. 3544536. It is the figure which printed the image of the kind and observed in visible light. This special gradation image was printed using cyan, magenta, yellow, and black process four-color inks used in general commercial printing, but an image that cannot be recognized under visible light is visible under infrared light. It is possible to embed an image that can be recognized, and this is impossible to reproduce with the current photoengraving apparatus. Therefore, the anti-counterfeiting effect is brought about by the special application method. In this embodiment, the special gradation image uses process four-color ink to print a house as an image, and an image that cannot be recognized under visible light is embedded with a QR code as an image that can be recognized under infrared light. . FIG. 4 shows the special gradation image area 5 of the gift certificate 4 shown in FIG. 3 observed under infrared light, and information can be read from the QR code 6 shown in FIG.

  (Embodiment 3) FIG. 5 is a diagram showing an example of a method for manufacturing and issuing an information carrying sheet according to the present invention. In M1, a digital signature generation key and a digital signature verification key of a certain digital signature scheme are generated. In general, when a digital signature of a message is generated, a hash function for irreversibly compressing the message is used. In this embodiment, a hash function is also used, and the digital signature method and hash function method used here are equivalent to the method of the electronic government recommended cipher list published by the Ministry of Internal Affairs and Communications and the Ministry of Economy, Trade and Industry in February 2003. It is desirable to select one having the above safety.

  A new random number is generated in M2. In this embodiment, since the new random number and the digital signature generated by M3 are individual information to be added to the information carrying sheet, all the new random numbers generated by M2 need to have different values. In M3, a hash value is taken for the new random number generated here using a hash function, and a digital signature is generated from this hash value and the digital signature generation key of M1. It is also listed in the above-mentioned e-government recommended cipher list, and it is recommended to use a key size of 1024 bits or more when using a relatively famous RSA cipher. In M4, in order to assign a random number or a digital signature corresponding to the amount of information, a method capable of recording a large capacity such as a QR code is required. In M5, the material is applied to the sheet with a rare material, for example, the ultraviolet light emitting material used in Embodiment 1, in order to prevent forgery in an analog manner.

  FIG. 6 is a schematic diagram of a manufacturing and issuing method when the special gradation image used in the second embodiment is used as the analog security technique. M1 to M4 are the same as those in FIG. 5, but in M6, data is generated in which the generated QR code is recognized as an image that can be recognized under the infrared light of the special gradation image, and is added to the sheet in M7. .

  (Embodiment 4) FIG. 7 is a schematic diagram of a manufacturing and issuing system of the present embodiment. A digital signature generation terminal 7 and a printing technology application terminal 8 are connected via a communication network 9. FIG. 8 is a block diagram of the digital signature generation terminal 7. The digital signature calculation unit 10 generates a digital signature generation key, a digital signature verification key, and a random number of the digital signature method, generates a new random number different from the known random number recorded in the digital signature recording unit 11, and further generates the new random number. And a new digital signature from the digital signature generation key.

  Here, in order to generate a new random number that is completely different from the known random number recorded in the digital signature recording unit 11, the digital signature calculation unit 10 generates a random number and the known random number recorded in the digital signature recording unit 11. If there is the same one, a random number is generated again, compared with a known random number, and repeated until a new random number is generated. When the new random number is generated in this way, the digital signature calculation unit 10 registers the new random number as a known random number in the digital signature recording unit 11.

  The digital signature recording unit 11 records a digital signature generation key, a digital signature verification key, and a new random number generated in the past.

  Then, the transmission unit 12 transmits the new random number and the new digital signature to the printing technology grant terminal 8.

  FIG. 9 is a configuration diagram of the printing technology giving terminal 8. The receiving unit 13 receives a new random number and a new digital signature sent from the transmitting unit 12 of the digital signature generating terminal 7. The printing technique calculation unit 14 converts the new random number and the new digital signature into data for adding to the sheet.

  Here, as an analog security technique, when an ultraviolet light emitting material is used, the QR code is converted into data for printing. When a special gradation image is used, data is created in which the QR code is an image that can be recognized under infrared light of the special gradation image.

  And the printing technique provision part 15 provides the printing technique which becomes forgery prevention to a sheet | seat. When an ultraviolet light emitting material is used, it is applied by a printer capable of outputting the ink. When a special gradation image is used, printing is performed by general commercial printing using process four-color inks of cyan, magenta, yellow, and black.

  FIG. 10 is a flowchart of the manufacturing / issuing system of this embodiment. In the digital signature generation terminal 7, as shown in S101, the digital signature calculation unit 10 generates a digital signature generation key and a digital signature verification key.

  Next, as shown in S <b> 102, the digital signature generation key and the digital signature verification key generated in the digital signature calculation unit 10 are registered in the digital signature recording unit 11.

  Then, as shown in S103 and S104, the digital signature calculation unit 10 generates a random number, compares it with a known random number recorded in the digital signature recording unit 11, and if there is the same, generates a random number again, Compare and repeat until a new random number is generated.

  When the new random number is generated, as shown in S105, the digital signature calculation unit 10 registers the new random number as a known random number in the digital signature recording unit 11.

  Further, as shown in S106, the digital signature calculation unit 10 generates a new digital signature from the new random number and the digital signature generation key, and as shown in S107, the transmission unit 12 sends the new random number and the new digital signature to the printing technology giving terminal 8. Send.

  After receiving the new random number and the new digital signature sent from the digital signature generation terminal 7 at the receiving unit 13 as shown in S108, the printing technology granting terminal 8 receives the new random number and the new random number at the printing technology calculating unit 14 as shown in S109. The new digital signature is converted into a QR code, and the QR code is assigned to the sheet in the printing technique giving unit 15 as shown in S110.

  When the special gradation image used in the second embodiment is used as the analog security technology, the QR code is converted into a QR code in S109, and at the same time, the QR code can be recognized under the infrared light of the special gradation image. The created data is created and assigned to the sheet in S110.

  In the present embodiment, the issuer is separated into issuer A and issuer B, and both are prevented from being fraudulent alone. In other words, by installing a digital signature generation terminal on the issuance manager A side and a printing technology grant terminal on the issuance manager B side, as long as both parties do not collaborate, not only forgeries by third parties but also the issuance manager The forgery of A and the forger of issuer B can be prevented.

  Also, before giving the printing technology used in this embodiment to the sheet, other analog security technology is given, or encryption which is another digital security technology managed by the issuance manager B is given. It can also be called.

  (Embodiment 5) In this embodiment, in order to prevent two or more sheets having the same individual information from being manufactured and issued, a database is attached to the printing technology grant terminal side, and individual information on sheets to be manufactured and issued Is being processed before printing.

  FIG. 11 is a schematic diagram of the manufacturing and issuing system of this embodiment. A digital signature generation terminal 7 and a printing technology application terminal 8 a are connected via a communication network 9.

  As in the fourth embodiment, FIG. 8 is a configuration diagram of the digital signature generation terminal 7 in the present embodiment. The digital signature calculation unit 10 generates a digital signature generation key, a digital signature verification key, and a random number of the digital signature method, generates a new random number different from the known random number recorded in the digital signature recording unit 11, and further generates the new random number. And a new digital signature from the digital signature generation key.

  The digital signature recording unit 11 records a digital signature generation key, a digital signature verification key, and a new random number generated in the past as known random numbers.

  Then, the transmission unit 12 transmits a new random number and a new digital signature to the printing technology grant terminal 8a.

  FIG. 12 is a configuration diagram of the printing technology giving terminal 8a. The receiving unit 13 receives a new random number and a new digital signature sent from the digital signature generation terminal 7.

  The printing technology recording unit 16 has a printing technology-added pre-printing database (FIG. 13) that is a database for recording the new random number and the new digital signature received by the receiving unit 13. In the pre-printing database provided with printing technology, individual information including a set of known random numbers and corresponding known digital signatures is recorded, and a usage history indicating whether or not the individual information has been printed on a sheet can be recorded. .

  The printing technology application unit 15 provides a printing technology for preventing forgery to the sheet. When an ultraviolet light emitting material is used, it is applied by a printer capable of outputting the ink. When a special gradation image is used, printing is performed by general commercial printing using process four-color inks of cyan, magenta, yellow, and black.

  The printing technology calculation unit 14 sets the new random numbers and new digital signatures received by the receiving unit 13 and the usage history of those sets to NO and registers them in the printing technology-added pre-printing database attached to the printing technology recording unit 16. The random number and the new digital signature are encoded into a QR code, and the recorded random number and the recorded digital signature are decrypted from the QR code into the recorded random number and the recorded digital signature. Confirmation of the existence of the group, confirmation of the use history, and change of the use history, and an instruction to give a QR code to the printing technology assigning unit 15 is issued.

  As in the case of the fourth embodiment, when an ultraviolet light emitting material is used as an analog security technique, the QR code is converted into printing data. When a special gradation image is used, data is created in which the QR code is an image that can be recognized under infrared light of the special gradation image.

  FIG. 14 is a flowchart of the manufacturing / issuing system of this embodiment. In the digital signature generation terminal 7, the digital signature calculation unit 10 generates a digital signature generation key and a digital signature verification key as shown in S201.

  Next, as shown in S202, the digital signature generation key and the digital signature verification key generated in the digital signature calculation unit 10 are registered in the digital signature recording unit 11.

  Then, as shown in S203 and S204, the digital signature calculation unit 10 generates a random number, compares it with a known random number recorded in the digital signature recording unit 11, and if there is the same one, generates a random number again to obtain the known random number Compare and repeat until a new random number is generated.

  When the new random number is generated, the digital signature calculation unit 10 registers the new random number as a known random number in the digital signature recording unit 11 as shown in S205.

  Further, as shown in S206, the digital signature calculation unit 10 generates a new digital signature from the new random number and the digital signature generation key, and as shown in S207, the transmission unit 12 sends the new random number and the new digital signature to the printing technology granting terminal 8a. Send.

  After receiving the new random number and the new digital signature sent from the digital signature generating terminal 7 at the receiving unit 13 as shown in S208, the printing technology granting terminal 8a uses the new random number and the new digital signature and their combination in S209. The history is set to NO and registered in the printing technology-added pre-printing database in the printing technology recording unit 16.

  The new random number and the new digital signature are encoded into a QR code in the printing technique calculation unit 14 as shown in S210, and the recorded random number and the recorded digital signature recorded in the QR code generated in the printing technique calculation unit 14 as shown in S211. To obtain the QR code. If the recording random number and the recording digital signature obtained by decryption as shown in S212 exist in the database prior to printing with the printing technology and the use history is NO, the recording random number and the recording digital signature are shown as shown in S213. The usage history is changed to YES, and an instruction to give a QR code is issued to the printing technology giving unit 15. If the recorded random number and the recorded digital signature are not in the printing technology-added pre-printing database or the usage history is YES in S212, the new random number and the new digital signature are read from the printing technology-added pre-printing database again, Encode to QR code.

  As shown in S214, the printing technique giving unit 15 gives the QR code to the sheet.

  As in the case of the fourth embodiment, when the special gradation image used in the second embodiment is used as the analog security technique, the QR code is converted into a QR code in S210 and at the same time, the infrared code of the special gradation image is used. Data that is an image that can be recognized under the light is created and applied to the sheet in S211.

  Also, before giving the printing technology used in this embodiment to the sheet, other analog security technology is given, or encryption which is another digital security technology managed by the issuance manager B is given. It can also be called.

  (Embodiment 6) In this embodiment, in order to prevent two or more sheets having the same individual information from being manufactured and issued, a database is attached to the digital signature assigning terminal side, and individual information on sheets to be manufactured and issued Is being processed before printing.

  FIG. 15 is a schematic diagram of the manufacturing and issuing system of this embodiment. A digital signature generation terminal 7 b and a printing technology application terminal 8 b are connected via a communication network 9.

  FIG. 16 is a block diagram of the digital signature generation terminal 7b. The digital signature calculation unit 10 generates a digital signature generation digital signature key, a digital signature verification key, and a random number, and generates a new random number different from the known random number recorded in the digital signature recording unit 11, and further Generate a new digital signature from the random number and the digital signature generation key, and issue a QR code assignment instruction from the recording random number and the existence of the recording digital signature sent from the printing technology assignment terminal 8b and the usage history, or Whether the new random number and the new digital signature are transmitted again is confirmed with the digital signature recording unit 11. When issuing a QR code assignment instruction, the usage history is changed to YES.

  When the new random number is generated, the digital signature calculation unit 10 registers the new random number and the new digital signature in the digital signature recording unit 11 as a known random number and a known digital signature in the database before digital signature generation and printing (FIG. 18). The digital signature generation pre-print database can record individual known random numbers and usage histories indicating the usage status of known digital signatures.

  The digital signature recording unit 11 records a digital signature generation key, a digital signature verification key, a new random number, a set of the corresponding new digital signature, and a use history of the set in a database before digital signature generation printing shown in FIG.

  Then, the digital signature transmission / reception unit 17 transmits the new random number and the new digital signature to the printing technology applying terminal 8b, receives the recording random number and the recording digital signature from the printing technology applying terminal 8b, and gives an instruction to attach the QR code to the sheet. Is transmitted to the printing technology giving terminal 8b.

  FIG. 17 is a configuration diagram of the printing technology giving terminal 8b. The printing technology transmission / reception unit 18 receives the new random number and the new digital signature sent from the digital signature transmission / reception unit 17 of the digital signature generation terminal 7b, transmits the recording random number and the recording digital signature to the digital signature generation terminal 7b, An instruction to attach a QR code to the sheet is received from the digital signature generation terminal 7b.

  The printing technique calculation unit 14 encodes a new random number and a new digital signature into a QR code, decrypts the recorded random number and the recorded digital signature recorded in the QR code, and applies the QR code to the sheet received from the digital signature generation terminal 7b. Based on the giving instruction, an instruction to give a QR code is issued to the printing technique giving unit 15.

  As in the case of the fourth embodiment, when an ultraviolet light emitting material is used as an analog security technique, the QR code is converted into printing data. When a special gradation image is used, data is created in which the QR code is an image that can be recognized under infrared light of the special gradation image.

  And the printing technique provision part 15 provides the printing technique which becomes forgery prevention to a sheet | seat. When an ultraviolet light emitting material is used, it is applied by a printer capable of outputting the ink. When a special gradation image is used, printing is performed by general commercial printing using process four-color inks of cyan, magenta, yellow, and black.

  FIG. 19 is a flowchart of the manufacturing / issuing system of this embodiment. In the digital signature generation terminal 7b, the digital signature calculation unit 10 generates a digital signature generation key and a digital signature verification key as shown in S301.

  Next, as shown in S302, the digital signature generation key and the digital signature verification key generated in the digital signature calculation unit 10 are registered in the digital signature recording unit 11.

  Then, as shown in S303 and S304, the digital signature calculation unit 10 generates a random number, compares it with a known random number recorded in the digital signature recording unit 11, and if there is the same one, generates a random number again, Compare and repeat until a new random number is generated.

  Further, as shown in S305, the digital signature calculation unit 10 generates a new digital signature from the new random number and the digital signature generation key. In S306, the new random number, the new digital signature, and their usage history are set to NO, and the digital signature recording unit 11 is recorded in the digital signature generation pre-print database. As shown in S307, the digital signature transmission / reception unit 17 transmits a new random number and a new digital signature to the printing technology assignment terminal 8b.

  As shown in S308, the printing technology giving terminal 8b receives the new random number and the new digital signature sent from the digital signature generation terminal 7b in the printing technology transmitting / receiving unit 18.

  The printing technology calculation unit 14 converts the new random number and the new digital signature into a QR code as shown in S309, and decrypts the recorded random number and the recorded digital signature recorded in the QR code as shown in S310.

  As shown in S311, the printing technique transmitting / receiving unit 18 transmits the recording random number and the recording digital signature to the digital signature generation terminal 7b.

  As shown in S312, the digital signature transmission / reception unit 17 receives the recording random number and the recording digital signature from the printing technology applying terminal 8b.

  As shown in S313, the digital signature calculation unit 10 determines whether to issue a QR code assignment instruction from the presence of the recorded random number and the recorded digital signature and the usage history or to transmit the new random number and the new digital signature again. The digital signature recording unit 11 that records the pre-printed database is confirmed. When a new random number and a new digital signature are transmitted again, the digital signature transmission / reception unit 17 executes S307. When issuing an instruction to give a QR code, as shown in S314, the digital signature calculation unit 10 changes the use history of the recorded random number and the recorded digital signature to YES.

  As shown in S315, the digital signature transmission / reception unit 17 transmits a QR code assignment instruction to the printing technology assignment terminal 8b.

  As shown in S316, the printing technology transmission / reception unit 18 receives an instruction to add a QR code from the digital signature generation terminal 7b.

  As shown in S <b> 317, the printing technique calculation unit 14 issues a QR code assignment instruction to the printing technique assignment unit 15.

  As shown in S318, the printing technique giving unit 15 gives a QR code to the sheet.

  As in the fourth embodiment, when the special gradation image used in the second embodiment is used as the analog security technique, the QR code is converted into a QR code in S310, and at the same time, the QR code is converted into an infrared ray of the special gradation image. Data that is an image that can be recognized under the light is created and applied to the sheet in S318.

  Also, before giving the printing technology used in this embodiment to the sheet, other analog security technology is given, or encryption which is another digital security technology managed by the issuance manager B is given. It can also be called.

  (Embodiment 7) In this embodiment, in order to prevent two or more sheets having the same individual information from being manufactured and issued, a database is attached to the digital signature generation terminal side, and the individual information on the sheet to be manufactured and issued Is processed after printing.

  FIG. 20 is a schematic diagram of the manufacturing and issuing system of this embodiment. A digital signature generation terminal 7 and a printing technology application terminal 8 c are connected via a communication network 9.

  As in the fourth embodiment, FIG. 8 is a configuration diagram of the digital signature generation terminal 7 in the present embodiment. The digital signature calculation unit 10 generates a digital signature generation key, a digital signature verification key, and a random number of the digital signature method, generates a new random number different from the known random number recorded in the digital signature recording unit 11, and further generates the new random number. And a new digital signature from the digital signature generation key.

  The digital signature recording unit 11 records a digital signature generation key, a digital signature verification key, and a new random number generated in the past as known random numbers.

  Then, the transmission unit 12 transmits the new random number and the new digital signature to the printing technology grant terminal 8c.

  FIG. 21 is a configuration diagram of the printing technology giving terminal 8c. The receiving unit 13 receives a new random number and a new digital signature sent from the transmitting unit 12 of the digital signature generating terminal 7.

  The printing technology recording unit 16 has a printing technology-added post-printing database (FIG. 22) that is a database for recording the new random number and the new digital signature received by the receiving unit 13. In the database after printing with the printing technology added, individual information consisting of a set of known random numbers and corresponding known digital signatures is recorded, and a usage history indicating whether or not the individual information has been printed on the sheet can be recorded. .

  The printing technique calculation unit 14 converts the new random number and the new digital signature into data for adding to the sheet, and accesses the database after the printing technique adding printing so that two or more sheets having the same individual information are not issued. To check.

  As in the case of the fourth embodiment, when an ultraviolet light emitting material is used as an analog security technique, the QR code is converted into printing data. When a special gradation image is used, data is created in which the QR code is an image that can be recognized under infrared light of the special gradation image.

  And the printing technique provision part 15 provides the printing technique which becomes forgery prevention to a sheet | seat. When an ultraviolet light emitting material is used, it is applied by a printer capable of outputting the ink. When a special gradation image is used, printing is performed by general commercial printing using process four-color inks of cyan, magenta, yellow, and black.

  The printing technology reading unit 19 reads the assigned random number and the assigned digital signature from the sheet.

  FIG. 23 is a flowchart of the manufacturing / issuing system of this embodiment. In the digital signature generation terminal 7, the digital signature calculation unit 10 generates a digital signature generation key and a digital signature verification key as shown in S401.

  Next, as shown in S <b> 402, the digital signature generation key and the digital signature verification key generated in the digital signature calculation unit 10 are registered in the digital signature recording unit 11.

  Then, as shown in S403 and S404, the digital signature calculation unit 10 generates a random number and compares it with a known random number recorded in the digital signature recording unit 11. Compare and repeat until a new random number is generated.

  When the new random number is generated, as shown in S405, the digital signature calculation unit 10 registers the new random number as a known random number in the digital signature recording unit 11.

  Further, as shown in S406, the digital signature calculation unit 10 generates a new digital signature from the new random number and the digital signature generation key, and as shown in S407, the transmission unit 12 sends the new random number and the new digital signature to the printing technology giving terminal 8. Send.

  In the printing technology giving terminal 8c, as shown in S408, after receiving the new random number and the new digital signature sent from the digital signature generation terminal 7 in the receiving unit 13, in S409, the new random number and the new digital signature are printed. Register the usage history with NO for the subsequent database.

  As shown in S410, the printing technique calculation unit 14 converts the new random number and the new digital signature into a QR code, and as shown in S411, the printing technique giving unit 15 gives the QR code to the sheet.

  Next, as shown in S412, the printing technique reading unit 19 reads the assigned random number and the assigned digital signature from the sheet, and as shown in S413, the printing technique calculating unit 14 reads the assigned random number and When individual information consisting of a set of assigned digital signatures exists in the post-printing technology-added printing database recorded in the printing technology recording unit 16 and the use history is NO, the sheet is issued and the printing technology-given printing The usage history of the individual information in the later database is changed to YES. If the print technology is not added to the database after printing or the usage history is YES, the issue of the sheet is invalidated.

As in the case of the fourth embodiment, when the special gradation image used in the second embodiment is used as the analog security technique, the QR code is converted into the QR code in S410 and at the same time, the infrared code of the special gradation image is used. Data that is an image that can be recognized under the light is created and added to the sheet in S411.

  Also, before giving the printing technology used in this embodiment to the sheet, other analog security technology is given, or encryption which is another digital security technology managed by the issuance manager B is given. It can also be called.

  (Embodiment 8) In this embodiment, in order to prevent two or more sheets having the same individual information from being manufactured and issued, a database is attached to the digital signature assigning terminal side, and individual information on sheets to be manufactured and issued Is processed after printing.

FIG. 24 is a schematic diagram of the manufacturing and issuing system of this embodiment. A digital signature generation terminal 7d and a printing technology application terminal 8d are connected via a communication network 9.
FIG. 25 is a block diagram of the digital signature generation terminal 7d. The digital signature calculation unit 10 generates a digital signature generation key, a digital signature verification key, and a random number of the digital signature method, generates a new random number different from the known random number recorded in the digital signature recording unit 11, and further generates the new random number. A new digital signature is generated from the digital signature generation key and the digital signature recording unit 11 determines whether or not to issue the new digital signature based on the presence of the assigned random number and the assigned digital signature sent from the printing technology giving terminal 8d and the usage history. Check.

  When the new random number is generated, the digital signature calculation unit 10 registers the new random number and the new digital signature in the digital signature recording unit 11 as a known random number and a known digital signature in the digital signature generation and printing database (FIG. 27). The digital signature generation / printing database can record individual known random numbers and usage histories indicating the usage status of known digital signatures.

  The digital signature recording unit 11 records a digital signature generation key, a digital signature verification key, a new random number, a set of the corresponding new digital signature, and a usage history of the set as a database after digital signature generation and printing shown in FIG.

  Then, the digital signature transmission / reception unit 17 transmits the new random number and the new digital signature to the printing technology granting terminal 8d, receives the assigned random number and the granting digital signature from the printing technology granting terminal 8d, and gives the sheet confirmation result to the printing technology granting. It transmits to the terminal 8d.

FIG. 26 is a configuration diagram of the printing technology giving terminal 8d. The printing technology transmission / reception unit 18 receives the new random number and the new digital signature sent from the digital signature transmission / reception unit 17 of the digital signature generation terminal 7, transmits the assigned random number and the assigned digital signature to the digital signature generation terminal 7, A confirmation result of whether or not sheet issuance is received from the digital signature generation terminal 7.
The printing technique calculation unit 14 converts the new random number and the new digital signature into data for adding to the sheet.

  As in the case of the fourth embodiment, when an ultraviolet light emitting material is used as an analog security technique, the QR code is converted into printing data. When a special gradation image is used, data is created in which the QR code is an image that can be recognized under infrared light of the special gradation image.

  And the printing technique provision part 15 provides the printing technique which becomes forgery prevention to a sheet | seat. When an ultraviolet light emitting material is used, it is applied by a printer capable of outputting the ink. When a special gradation image is used, printing is performed by general commercial printing using process four-color inks of cyan, magenta, yellow, and black.

  The printing technology reading unit 19 reads the assigned random number and the assigned digital signature from the sheet.

  FIG. 28 is a flowchart of the manufacturing / issuing system of this embodiment. In the digital signature generation terminal 7d, the digital signature calculation unit 10 generates a digital signature generation key and a digital signature verification key as shown in S501.

  Next, as shown in S502, the digital signature generation key and the digital signature verification key generated in the digital signature calculation unit 10 are registered in the digital signature recording unit 11.

  Then, as shown in S503 and S504, the digital signature calculation unit 10 generates a random number, compares it with a known random number recorded in the digital signature recording unit 11, and if there is the same one, generates a random number again, Compare and repeat until a new random number is generated.

  Further, as shown in S505, the digital signature calculation unit 10 generates a new digital signature from the new random number and the digital signature generation key. In S506, the new random number, the new digital signature, and their usage history are set to NO, and the digital signature recording unit 11 is generated and recorded in the database after printing. As shown in S507, the digital signature transmission / reception unit 17 transmits a new random number and a new digital signature to the printing technology applying terminal 8d.

  As shown in S508, the printing technology giving terminal 8d receives the new random number and the new digital signature sent from the digital signature generating terminal 7d in the printing technology transmitting / receiving unit 18.

  As shown in S509, the printing technique calculation unit 14 converts the new random number and the new digital signature into a QR code, and as shown in S510, the printing technique giving unit 15 gives the QR code to the sheet.

  Next, as shown in S511, the printing technology reading unit 19 reads the assigned random number and the attached digital signature attached to the sheet, and as shown in S512, the printing technology transmitting / receiving unit 18 sends the digital signature generation terminal 7d. The assigned random number and the assigned digital signature are transmitted to.

  As shown in S513, the digital signature generation terminal 7d receives the added random number and the assigned digital signature transmitted from the printing technology applying terminal 8d in the digital signature transmission / reception unit 17.

  As shown in S514, in the digital signature calculation unit 10, when the combination of the assigned random number and the assigned digital signature exists in the digital signature generation and printing database in the digital signature recording unit 11 and the usage history is NO, the sheet Is issued and the usage history of the set of the assigned random number and the assigned digital signature is changed to YES. When the combination of the assigned random number and the assigned digital signature does not exist in the database after digital signature generation / printing in the digital signature recording unit 11 or the use history is YES, a confirmation result is issued that the sheet cannot be issued.

  In S515, the confirmation result is transmitted from the digital signature transmission / reception unit 17 to the printing technology applying terminal 8d.

  In S516, the printing technology giving terminal 8d receives the confirmation result from the digital signature generation terminal 7d in the printing technology transmitting / receiving unit 18.

  As in the fourth embodiment, when the special gradation image used in the second embodiment is used as the analog security technique, the QR code is converted into a QR code in S509, and at the same time, the QR code is converted into an infrared ray of the special gradation image. Data that is an image that can be recognized under the light is created and added to the sheet in S510.

  Also, before giving the printing technology used in this embodiment to the sheet, other analog security technology is given, or encryption which is another digital security technology managed by the issuance manager B is given. It can also be called.

  In the fifth to eighth embodiments, in order to prevent two or more sheets having the same individual information from being manufactured and issued, a database is placed in each of the digital signature generation terminal and the printing technology granting terminal, and printing technology printing is performed. The database is checked before or after printing. By combining these, it is possible to make the inspection more strict so that two or more sheets having the same individual information are not issued.

  (Embodiment 9) FIG. 29 shows the authenticity determination method of a present Example. It is necessary to perform M11, M12, and M13 in advance as preparation before actually performing authenticity determination. In M11, a digital signature verification key for checking the read verification target random number and verification target digital signature is disclosed.

  When the anti-counterfeiting technology used is an ultraviolet light emitting material, for example, there is a method of reading a QR code image that is not recognized by visible light but can be recognized by a wavelength in the ultraviolet light, and decoding the QR code.

  Further, when the anti-counterfeiting technique is a special gradation image, there is a method of reading a QR code image that is not recognized under visible light but can be recognized with infrared light, and decoding the QR code. As a selection of the machine reading method in the present embodiment, for example, when an ultraviolet light emitting material is used, a case where a method of simply reading a QR code that can be recognized at a wavelength in the ultraviolet is employed will be described.

  The ultraviolet light emitting material used in this example is a material having a special property that it cannot be recognized even if it emits light with visible light or a long wavelength. If reading is performed only with the above-described ultraviolet light wavelength that is not used, it may be possible to forge using a relatively easily available material that emits light in the entire ultraviolet light region. As described above, it is important to select the machine reading method of the anti-counterfeit technology whether or not the characteristics of the anti-counterfeit technology are utilized.

  In M12, as a negative list, a database recording illegal random numbers and illegal digital signatures, which are individual information used for counterfeiting, is created or updated. What can be considered as counterfeiting that passes this authenticity discrimination method is a case where an analog crime forgery prevention technology can be broken by an organized crime group. Here, when the organized criminal group does not know the digital signature generation key which is a digital security technique, it is assumed that a large number of sheets having the same individual information are manufactured. Even in such a case, forgery may be detected by other anti-counterfeiting techniques.

  In addition, since the individual information is adopted for the sheet of this embodiment, a method that can detect the presence of the sheet having the same individual information by managing information such as when and where the sheet is used (for example, a patent) It is also possible to detect forgery using Document 3). The illegal random number and the illegal digital signature, which are individual information of the forged sheet thus detected, are newly registered in the negative list when the negative list of M12 is updated.

  As in the fourth to eighth embodiments, the digital signature generation terminal is installed on the issuance manager A side, and the printing technology grant terminal is installed on the issuance manager B side. Otherwise, issuance officer A does not have sufficient knowledge about analog security technology, so it is difficult to produce a genuine sheet. On the other hand, the issuance manager B may perform an illegal act of manufacturing and issuing a plurality of sheets having the same individual information, but the sheets having the same individual information are prevented from being illegally distributed by using a negative list. be able to. Since issuance manager B does not know the digital signature generation key, it cannot generate new individual information that does not exist in the negative list, so that issuance manager B cannot also illegally manufacture and issue sheets. Therefore, it is considered that neither the issuance manager A nor the issuance manager B can improperly manufacture and issue sheets, and the manufacturing manager A and the manufacturing manager B can build a realistic trust relationship.

  The above negative list is released at M13.

  In this embodiment, an unauthorized third party possesses equipment for machine-reading the verification target random number and the verification target digital signature from the sheet, and the digital signature verification key disclosed in M11, M13 Even if you misuse the negative list published in, you can't forge. In addition, if it is only necessary for a specific person or organization to be able to determine the authenticity, “public” here means that the information is disclosed only to the specific person or organization. By doing so, it becomes possible to further reduce the threat of counterfeiting.

  Actual authenticity determination is performed in M14 and M15. In M14, the verification target random number and the verification target digital signature are read. If it cannot be read here, the sheet is rejected.

  When the verification target random number and the verification target digital signature are read, the verification target random number and the verification target digital signature that are read in the negative list obtained in M13 do not exist, and the digital signature verification key acquired in M11 is obtained. If the relationship between the verification target random number read and the verification target digital signature is valid, the sheet is accepted, and if not, the sheet is rejected.

  (Embodiment 10) FIG. 30 is a schematic diagram of a true / false discrimination system of the present embodiment. A digital signature generation terminal 22, a negative list generation terminal 20, and a true / false determination terminal 21 are connected via a communication network 9.

  FIG. 31 is a configuration diagram of the digital signature generation terminal 22. The digital signature generation terminal 22 includes a digital signature calculation unit 10, a digital signature recording unit 11, and a digital signature transmission unit 23. The digital signature calculation unit 10 generates a digital signature type digital signature generation key and a digital signature verification key, The digital signature recording unit 11 records a digital signature generation key and a digital signature verification key, and the digital signature transmission unit 23 transmits the digital signature verification key to the authenticity determination terminal 21.

  FIG. 32 is a configuration diagram of the negative list generation terminal 20. The negative list generation terminal 20 includes a negative list recording unit 24 and a negative list transmission unit 25. The negative list recording unit 24 records an illegal random number and an illegal digital signature used for a forged sheet in a negative list, and transmits the negative list. The unit 25 transmits a negative list to the authenticity determination terminal 21.

  FIG. 33 is a configuration diagram of the authenticity determination terminal 21. The authenticity discrimination terminal 21 includes a receiving unit 26, a true / false discrimination recording unit 27, a true / false discrimination reading unit 28, and a true / false discrimination calculation unit 29. In the receiving unit 26, the digital signature sent from the digital signature generation terminal 22 is used. The negative list sent from the verification key and negative list generation terminal 20 is received, the digital signature verification key and the negative list are recorded in the authenticity discrimination recording unit 27, and the counterfeit discrimination reading unit 28 prevents forgery of the sheet. The verification target random number and the verification target digital signature are read from the area to which the printing technology is applied, and the authenticity determination operation unit 29 checks whether the read verification target random number and the verification target digital signature are in the negative list, and the digital signature verification key is obtained. It is used to verify whether the verification target random number and the verification target digital signature are valid.

  Regarding the printing technology used to prevent counterfeiting used in the present embodiment, a method for reading a verification target random number and a verification target digital signature from an area to which a printing technology that prevents sheet forgery is provided has been disclosed. However, since the printing technology for preventing forgery does not become fragile, the authenticity determination terminal 21 can be managed by a third party. In this case, however, the issuance manager B who manages the printing technology that prevents forgery prevents the machine reading method for reading the verification target random number and the verification target digital signature from the area to which the printing technology that prevents sheet forgery is applied. Is disclosed to a third party, and the third party implements the machine reading method in the authenticity determination reading unit 28.

  If the printing technology used to prevent counterfeiting uses an ultraviolet light-emitting material, for example, a method of reading a QR code image that is not recognized by visible light but can be recognized by ultraviolet wavelengths and decoding the QR code is The fake discrimination reading unit 28 is mounted.

  In addition, when a special gradation image is used as a printing technique for preventing forgery, for example, a method of reading a QR code image that is not recognized under visible light but can be recognized with infrared light and decoding the QR code is The fake discrimination reading unit 28 is mounted.

  FIG. 34 is a flowchart of the authenticity determination system of the present embodiment. In the digital signature generation terminal 22, a digital signature generation key and a digital signature verification key are generated in the digital signature calculation unit 10 as shown in S601, and those keys are recorded in the digital signature recording unit 11 as shown in S602. In step S <b> 603, the digital signature transmission unit 23 transmits the digital signature verification key to the authenticity determination terminal 21. On the other hand, in the negative list generation terminal 20, as shown in S604, as the negative list generation / update in the negative list recording unit 24, the negative random number and the illegal digital signature, which are individual information used for forgery, are recorded. Create and update lists. Then, as shown in S <b> 605, the negative list transmission unit 25 transmits the latest negative list to the authenticity determination terminal 21. In the authenticity determination terminal 21, as shown in S 606, the receiving unit 26 authenticates the digital signature verification key sent from the digital signature generation terminal 22 and the negative list sent from the negative list generation terminal 20. Recorded in the false discrimination recording unit 27, and as shown in S607, the true / false discrimination reading unit 28 reads the verification target random number and the verification target digital signature from the sheet. When the verification target random number and the verification target digital signature can be read, the verification target random number and verification target digital signature read in the negative list recorded in the authenticity determination recording unit 27 in the authenticity determination calculation unit 29, as shown in S608. If the correlation between the verification target random number and the verification target digital signature is valid using the digital signature verification key recorded in the authenticity determination recording unit 27, the sheet is regarded as authentic, and so Otherwise, it is regarded as an invalid sheet.

  Note that the digital signature verification key need only be transmitted once if there is no change in the digital signature verification key. The negative list can be transmitted when the negative list is changed, transmitted at a certain time interval, or transmitted when the authenticity of the sheet is determined.

  If only a specific person or organization needs to be able to perform authenticity determination, the negative list generation terminal 20 and the authenticity determination terminal 21 are installed on the issuance manager A side who manages the digital signature generation terminal 22. Alternatively, it can be installed on the issuance manager B side who manages printing technology that prevents forgery. It is also possible to install a negative list generation terminal 20 or a true / false determination terminal 21 in a specific third institution and undertake these services.

It is the schematic which shows an example of the information carrier sheet by Embodiment 1 of this invention. It is the schematic which shows an example of the information carrier sheet by Embodiment 1 of this invention. It is the schematic which shows an example of the information carrier sheet by Embodiment 2 of this invention. It is the schematic which shows an example of the information carrier sheet by Embodiment 2 of this invention. It is a figure showing an example of the manufacturing and issuing method of the information carrier sheet by Embodiment 3 of this invention. It is a figure showing an example of the manufacturing and issuing method of the information carrier sheet by Embodiment 3 of this invention. It is the schematic of the manufacture issue system by Embodiment 4 of this invention. It is a block diagram of the digital signature production | generation terminal in the manufacture issue system by Embodiment 4 of this invention. It is a block diagram of the printing technique provision terminal in the manufacture issue system by Embodiment 4 of this invention. It is a flowchart of the manufacture issue system by Embodiment 4 of this invention. It is the schematic of the manufacture issue system by Embodiment 5 of this invention. It is a block diagram of the printing technique provision terminal in the manufacture issue system by Embodiment 5 of this invention. It is the schematic of the database before printing technology provision printing in the manufacture issue system by Embodiment 5 of this invention. It is a flowchart of the manufacture issue system by Embodiment 5 of this invention. It is the schematic of the manufacture issue system by Embodiment 6 of this invention. It is a block diagram of the digital signature production | generation terminal in the manufacture issue system by Embodiment 6 of this invention. It is a block diagram of the printing technique provision terminal in the manufacture issue system by Embodiment 6 of this invention. It is the schematic of the database before digital signature production | generation printing in the manufacture issue system by Embodiment 6 of this invention. It is a flowchart of the manufacture issue system by Embodiment 6 of this invention. It is the schematic of the manufacture issue system by Embodiment 7 of this invention. It is a block diagram of the printing technique provision terminal in the manufacture issue system by Embodiment 7 of this invention. It is the schematic of the database after printing technology provision printing in the manufacture issue system by Embodiment 7 of this invention. It is a flowchart of the manufacture issue system by Embodiment 7 of this invention. It is the schematic of the manufacture issue system by Embodiment 8 of this invention. It is a block diagram of the digital signature production | generation terminal in the manufacture issue system by Embodiment 8 of this invention. It is a block diagram of the printing technique provision terminal in the manufacture issue system by Embodiment 8 of this invention. It is the schematic of the database after digital signature production | generation printing in the manufacture issue system by Embodiment 8 of this invention. It is a flowchart of the manufacture issue system by Embodiment 8 of this invention. It is a figure showing the authenticity determination method by Embodiment 9 of this invention. Schematic diagram of authenticity determination system according to embodiment 10 of the present invention It is a block diagram of the digital signature production | generation terminal in the authenticity determination system by Embodiment 10 of this invention. It is a block diagram of the negative list production | generation terminal in the authenticity determination system by Embodiment 10 of this invention. It is a block diagram of the authenticity determination terminal in the authenticity determination system by Embodiment 10 of this invention. It is a flowchart of the authenticity discrimination system by Embodiment 10 of this invention.

Explanation of symbols

1 Gift certificate using ultraviolet light emitting material 2 UV light emitting region observed by irradiating visible light 3 QR code appearing by irradiating ultraviolet light wavelength 4 Gift certificate using special gradation image 5 Irradiating with visible light Observed special gradation image area 6 QR codes 7, 7 b, 7 d, 22 appearing by irradiating infrared rays Digital signature generation terminals 8, 8 a, 8 b, 8 c, 8 d Printing technology grant terminal 9 Communication network 10 Digital signature generation terminal Digital signature calculation unit 11 Digital signature recording unit 12 in digital signature generation terminal Transmission unit 13 in digital signature generation terminal Reception unit 14 in print technology granting terminal 14 Print technology calculation unit in printing technology granting terminal 15 Printing technology granting unit in printing technology granting terminal 16 Printing Technology Recorder 17 in Printing Technology Granting Terminal 17 In Digital Signature Generation Terminal Digital signature transmission / reception unit 18 Printing technology transmission / reception unit 19 at printing technology granting terminal 19 Printing technology reading unit 20 at printing technology granting terminal Negative list generation terminal 21 Authenticity discrimination terminal 23 Digital signature transmission unit 24 at digital signature generation terminal Negative list generation terminal Negative list recording unit 25 Negative list transmission unit 26 in negative list generation terminal Reception unit 27 in true / false determination terminal True / false determination recording unit 28 in true / false determination terminal True / false determination reading unit 29 in true / false determination terminal True / false discrimination operation

Claims (10)

A method for manufacturing and issuing sheets with individual information,
Generating a digital signature generation key and a digital signature verification key of a digital signature method; generating a new random number; generating a new digital signature from the new random number and the digital signature generation key; and the new random number And a method for producing and issuing an information carrying sheet, comprising: converting a set of information composed of the new digital signature and attaching the information to the sheet. A sheet manufacturing and issuing system with individual information,
A digital signature generation terminal and a printing technology application terminal are connected to each other via a communication network, and the digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a transmission unit, and the digital signature calculation unit In the digital signature method, a digital signature generation key, a digital signature verification key, and a random number are generated, and the known random number recorded in the digital signature recording unit is compared with the generated random number until a new random number is generated. It repeats random number generation and comparison with the known random number, further generates a new digital signature from the new random number and the digital signature generation key, and the digital signature recording unit includes the digital signature generation key, the digital signature verification key, and the A new random number is recorded, and the transmission unit includes the new random number and the new digital signature. The printing technology granting terminal includes a receiving unit, a printing technology calculating unit, and a printing technology granting unit, and the receiving unit sends the new technology sent from the digital signature generating terminal. The random number and the new digital signature are received, the printing technology calculation unit converts the new random number and the new digital signature into data for adding to the sheet, and the printing technology adding unit prints the converted data An information carrying sheet manufacturing / issuing system, which is applied to the sheet using a technique. A sheet manufacturing and issuing system with individual information,
A digital signature generation terminal and a printing technology application terminal are connected to each other via a communication network, and the digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a transmission unit, and the digital signature calculation unit In the digital signature method, a digital signature generation key, a digital signature verification key and a random number are generated, and the known random number recorded in the digital signature recording unit is compared with the generated random number until a new random number is generated. It repeats random number generation and comparison with the known random number, further generates a new digital signature from the new random number and the digital signature generation key, and the digital signature recording unit includes the digital signature generation key, the digital signature verification key, and the A new random number is recorded, and the transmission unit includes the new random number and the new digital signature. The printing technology granting terminal includes a receiving unit, a printing technology recording unit, a printing technology calculating unit, and a printing technology granting unit. The receiving unit sends the printing technology granting terminal from the digital signature generation terminal. The new random number and the new digital signature that have been received are received, and the printing technology recording unit records a database prior to printing with a printing technology that includes the set of the new random number and the new digital signature and the usage history of the set, The printing technique calculation unit converts the new random number and the new digital signature into data to be added to the sheet, further converts it into a recording random number and a recording digital signature recorded in the data, and further prints the printing technique record. The sheet to which the data is attached based on the recording random number and the presence of the recording digital signature and the usage history Check the line availability, information carrying sheet manufacturing issuing system, characterized in that applied to the sheet using a printing technique the converted data by the printing technique applied portion. A sheet manufacturing and issuing system with individual information,
A digital signature generation terminal and a printing technology grant terminal are connected to each other via a communication network, and the digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a digital signature transmission / reception unit, and the digital signature The arithmetic unit generates a digital signature type digital signature generation key, a digital signature verification key, and a random number, and compares a known random number recorded in the digital signature recording unit with the generated random number to generate a new random number. The random number generation and the comparison of the known random number are repeated until a new digital signature is generated from the new random number and the digital signature generation key, and the recording random number and the recording digital signature sent from the printing technology granting terminal The recorded random number on the sheet and the recorded digital signature The digital signature recording unit confirms whether to give an instruction to give the recorded data or to send a new random number and a new digital signature again. The signature recording unit records a digital signature generation key, a digital signature verification key, a new digital random number, a set of the new digital signature, and a digital signature generation pre-print database including the usage history of the set, and the digital signature transmission / reception unit The new random number and the new digital signature are transmitted to the printing technology granting terminal, the recording random number and the recording digital signature are received from the printing technology granting terminal, and the recording random number and the recording digital signature are transmitted to the printing technology granting terminal. A printing technology transmission terminal, a printing technology transmitting / receiving unit, a printing technology The printing technology transmitting / receiving unit receives the new random number and the new digital signature sent from the digital signature generation terminal, and receives the recording random number and the recording digital signature. Transmitting to the digital signature generation terminal, receiving from the digital signature generation terminal an instruction to add data in which the recording random number and the recording digital signature are recorded, and the printing technology calculation unit receives the new random number and the new digital signature Converting the data to be attached to a sheet, decrypting the recorded random number and the recorded digital signature recorded in the data, and printing the data based on an instruction to attach the data to the sheet received from the digital signature generation terminal An instruction to give data is given to the granting unit, and the converted data is given by the printing technology granting unit. Is provided to the sheet by using a printing technique. A sheet manufacturing and issuing system with individual information,
A digital signature generation terminal and a printing technology application terminal are connected to each other via a communication network, and the digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a transmission unit, and the digital signature calculation unit In the digital signature method, a digital signature generation key, a digital signature verification key, and a random number are generated, and the known random number recorded in the digital signature recording unit is compared with the generated random number until a new random number is generated. It repeats comparison between random number generation and the known random number, and further generates a new digital signature from the new random number and the digital signature generation key, and the digital signature recording unit includes a digital signature generation key, a digital signature verification key, and the random number. The transmission unit records the new random number and the new digital signature. The printing technology granting terminal comprises a receiving unit, a printing technology recording unit, a printing technology calculating unit, a printing technology granting unit, and a printing technology reading unit, and the receiving unit includes the digital signature generating terminal. Receiving the new random number and the new digital signature sent from the printer, and the printing technology recording unit records a post-printing database with printing technology comprising the set of the new random number and the new digital signature and the usage history of the set. The printing technology calculation unit converts the new random number and the new digital signature into data for giving to the sheet, and further refers to the printing technology recording unit to give the assigned random number and assigned digital to the sheet. Whether or not to issue the sheet having a signature is confirmed, and the printing technology assigning unit attaches the converted data to the sheet using a printing technology. And, wherein the printing technique read information carrying sheet manufacturing issuing system, characterized in that reading imparting random number and applying the digital signature is applied to the sheet in the unit. A sheet manufacturing and issuing system with individual information,
A digital signature generation terminal and a printing technology grant terminal are connected to each other via a communication network, and the digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a digital signature transmission / reception unit, and the digital signature The arithmetic unit generates a digital signature type digital signature generation key, a digital signature verification key, and a random number, and compares a known random number recorded in the digital signature recording unit with the generated random number to generate a new random number. The random number generation and the comparison with the known random number are repeated until a new digital signature is generated from the new random number and the digital signature generation key, and sent from the printing technology granting terminal with reference to the digital signature recording unit. Confirm whether or not to issue the sheet with the assigned random number and the assigned digital signature. The digital signature recording unit records a digital signature generation key, a digital signature verification key, a new random number, a set of the new digital signature, and a digital signature generation post-print database including the usage history of the set, and the digital signature transmission / reception unit The new random number and the new digital signature are transmitted to the printing technology granting terminal, the granting random number and the granting digital signature are received from the printing technology granting terminal, and the granting random number and the granting digital signature are issued to the printing technology granting terminal. The printing technology granting terminal comprises a printing technology transmitting / receiving unit, a printing technology calculating unit, a printing technology applying unit, and a printing technology reading unit, and the printing technology transmitting / receiving unit generates the digital signature. Receiving the new random number and the new digital signature sent from the terminal, and And the digital signature generation terminal, and the digital signature generation terminal receives the grant random number and a confirmation result of whether or not the grant digital signature can be issued. And the new digital signature is converted into data to be given to the sheet, the printing technology giving unit gives the converted data to the sheet using a printing technology, and the printing technology reading unit gives the sheet to the sheet An information carrying sheet manufacturing and issuing system, wherein the assigned random number and the assigned digital signature are read. A method for determining the authenticity of a sheet with individual information,
Publishing a digital signature verification key; recording an illegal random number and an illegal digital signature in a negative list; publishing the negative list; and determining whether the verification target random number and the verification target digital signature are in the negative list And a step of determining whether the verification target random number and the verification target digital signature are valid or not using the digital signature verification key. A system for determining the authenticity of a sheet with individual information,
A digital signature generation terminal, a negative list generation terminal, and a true / false determination terminal are connected to each other via a communication network, and the digital signature generation terminal includes a digital signature calculation unit, a digital signature recording unit, and a digital signature transmission unit. The digital signature calculation unit generates a digital signature generation digital signature generation key and a digital signature verification key, the digital signature recording unit records a digital signature generation key and a digital signature verification key, and the digital signature transmission unit stores the digital signature The digital signature verification key is transmitted to the authenticity determination terminal, and the negative list generation terminal includes a negative list recording unit and a negative list transmission unit, and the negative list recording unit negatively outputs an illegal random number and an illegal digital signature. Record it in the list and The active list transmission unit transmits a negative list to the authenticity determination terminal, and the authenticity determination terminal includes a receiving unit, a true / false determination recording unit, a true / false determination reading unit, and a true / false determination calculation unit, The receiving unit receives the digital signature verification key sent from the digital signature generation terminal and the negative list sent from the negative list generation terminal, and the authenticity determination recording unit receives the digital signature verification key and the negative list A list is recorded, and the true / false discrimination reading unit reads the verification target random number and the verification target digital signature from the individual information area attached to the sheet, and the true / false determination calculation unit stores the verification target random number and the verification target digital signature. It is determined whether the negative list is present, and the verification target random number and Authenticity discrimination system information carrying sheet, wherein the verified digital signature to determine whether it is legitimate. The individual information given to the sheet is a set of information including a random number and a digital signature for the random number, and is colorless in the visible light source and the ultraviolet long wavelength region, and emits light only in the ultraviolet middle wavelength region and the ultraviolet short wavelength region. The information carrying sheet according to claim 1, wherein the information carrying sheet is provided with a material. The individual information given to the sheet is characterized in that a set of information composed of a random number and a digital signature for the random number is given as a plurality of visible and invisible images as a special gradation image. Item 9. The information carrying sheet according to any one of Items 1 to 8.

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