JP2007165973A - Verifying data generating device and authenticating data generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a verifying data generating device capable of verifying an exact time and position without requiring complicated procedures by a user and using a simple system configuration, and to also provide an authenticating data generating device. <P>SOLUTION: First, a verifying data generator 13 generates verifying data and an authenticating data generator 24 generates authenticating data, by utilizing information included in signals to be transmitted from a navigation satellite which has been received by receivers 11, 21. Subsequently, an imaging device 301 such as a camera composites the verifying data to information as a target of verification to generate information with a certificate. Finally, an authenticator 28 compares the verifying data included in the information with a certificate to the authenticating data to authenticate the data, and verifies the position or time used for generating the authenticating data. In this way, the position or time can be verified at which the information of verification target is composited. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a proof data generation device and an authentication data generation device for proof of position or time.

With the development of information and communication technology, accurate information on position or time is regarded as important in various fields such as product shipment information, physical distribution management, event certification and recording. Conventionally, as a system for proving these positions or times, for example, there is a system described in Patent Document 1.
The time information setting device and the time certification verification device described in Patent Document 1 use public information about events that cannot be anticipated in advance (for example, information that changes every moment such as stock price information and weather information). In this apparatus, as shown in FIG. 11, information receiving means 1004 for receiving target information that is the subject of time certification, public information receiving means 1005 for receiving public information from the information public organization 1003, received target information and Data concatenation means 1006 for concatenating public information to generate concatenated data, electronic signature means 1007 for adding an electronic signature to the concatenated data, and time certification information output means 1008 for outputting time certification information including the concatenated data and the electronic signature. And have. With this configuration, it is possible to perform time certification based on the fact that information is not present or generated before the public information.
JP 2002-215825 A

However, in the case of Patent Document 1, the user needs to obtain all the information that is likely to require time certification in the future by sending it to a time stamp organization once. For this reason, the amount of work for the user increases and the amount of extra data that must be stored is enormous. In addition, since the time stamp organization obtains public information used for time certification via an external communication medium such as the Internet, it is necessary to add a communication means separately to the time stamp organization, and the apparatus becomes complicated and large. Turn into. Furthermore, in places where external communication media cannot be prepared, public information cannot be obtained, so there is a geographical restriction that time certification cannot be performed. In addition, information that the user wants to obtain certification is generated. Therefore, since it takes a considerable time to output the time certificate and the update frequency of the public information is low, there is a problem that the certification time is not accurate.

  The present invention has been made in view of the above problems, and a proof data generation device capable of performing accurate position or time proof by a simple system configuration without requiring a user to perform complicated procedures. And it aims at providing the data generation apparatus for authentication.

First, in order to solve the above problem, a certification data generation device according to the present invention includes a receiving unit that receives a signal transmitted from a positioning satellite, and an extraction that extracts predetermined information from information included in the signal. And a proof data generation unit for generating proof data using the information extracted by the extraction unit.
Further, the proof data generating device includes an interface for acquiring proof object information to be proofed from the outside, a proof object information acquiring unit for acquiring the proof object information via the interface, and the proof object information And a synthesizer for synthesizing the proof data and generating certificate-attached information.
Further, the proof data generation device includes a proof object information generation unit that generates proof object information to be proofed, and a synthesizer that combines the proof object information and the proof data to generate certificate-attached information. Part.
In addition, any one of the proof data generation devices includes a calculation unit that calculates a position or time using a signal received by the reception unit, and the combining unit includes information on the position or time calculated by the calculation unit. And the certification object information and the certification data are combined to generate certification-added information.

Second, in order to solve the above problem, an authentication data generating apparatus according to the present invention includes a receiving unit that receives a signal transmitted from a positioning satellite, and an extraction that extracts predetermined information from information included in the signal. A storage unit that stores information extracted by the extraction unit, and an authentication data generation unit that generates authentication data using the information stored in the storage unit.
Further, the authentication data generating device includes an interface for acquiring certificate-attached information to be certified from the outside, a certificate-attached information acquiring unit for acquiring the certificate-attached information via the interface, and the certificate A proof data extraction unit that extracts proof data from the proof information, and an authentication unit that authenticates the authentication data and the proof data.

  Thirdly, in order to solve the above-mentioned problem, an authentication data generating apparatus according to the present invention includes an interface for acquiring certificate-attached information to be certified and authentication data used for authentication of the certificate-attached information from the outside. A certificate information acquisition unit that acquires the certificate information via the interface, a certification data extraction unit that extracts certification data from the certificate information, and the authentication data via the interface. An authentication data acquisition unit for acquiring data, and an authentication unit for authenticating the proof data and the authentication data, wherein the proof data and the authentication data are generated from information included in the signal It is characterized by being.

  With the proof data generation device and the authentication data generation device according to the present invention, it is possible to perform accurate position or time proof without a complicated procedure by the user and with a simple system configuration.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing an example of the configuration of a proof data generation device 101 and an authentication data generation device 201 according to Embodiment 1 of the present invention.

  The proof data generation apparatus 101 includes a reception unit 11, an extraction unit 12, a proof data generation unit 13, a display unit 14, and a calculation unit 15.

  Here, the receiving unit 11 receives a signal transmitted from a positioning satellite such as GPS, and the extracting unit 12 extracts predetermined information from information included in the received signal. This predetermined information includes satellite orbit information (ephemeris), ionospheric correction data, position information (almanac) of other satellites, and satellite clock correction coefficients.

  The proof data generation unit 13 uses the extracted information to generate proof data that serves as a proof for proof of position or time. The information used for generating the proof data is one piece of information included in the received signal or a combination of a plurality of pieces of information. In order to prevent forgery, the proof data is used to conceal which information is used for the proof data among the information included in the signals transmitted from the positioning satellites. It is desirable to encrypt.

  Moreover, the calculating part 15 calculates a position or time from the signal which the receiving part 11 received. The display unit 14 displays the proof data generated by the proof data generation unit 13 and the position or time calculated by the calculation unit 15 on a liquid crystal screen or the like. Here, the purpose of displaying the calculated position or time together is to allow the user to easily grasp the position or time at which the proof data is generated. Accordingly, the effect of the present invention can be obtained even if the position or time is not always obtained by the calculation unit 15 and displayed on the display unit 14.

  Further, the information displayed on the display unit 14, the certification object information (such as the work status of the construction site) that is the object of certification of the position or time, the displayed certification data, and the time and position are displayed on the camera or the like. The information with the certificate is generated by simultaneously copying both images by the imaging device 301.

  The authentication data generation device 201 a includes a reception unit 21, an extraction unit 22, a storage unit 23, and an authentication data generation unit 24.

  Here, the receiving unit 21 receives a signal transmitted from a positioning satellite such as GPS, and the extracting unit 22 extracts predetermined information from information included in the received signal. The predetermined information needs to include information extracted by the extraction unit 12 included in the proof data generation apparatus 101, and is most preferably the same as the information extracted by the extraction unit 12.

  The storage unit 23 sequentially stores the extracted predetermined information. And the authentication data generation part 24 produces | generates the data for authentication using the information in the position or time to want to prove among the memorize | stored information. This authentication data is used for authentication of the proof data generated by the proof data generation device 101. Note that the storage unit 23 may sequentially store authentication data generated each time information is extracted instead of sequentially storing the extracted information.

The authentication data generation device 201b includes an interface 25, a certificate-attached information acquisition unit 26, a certification data extraction unit 27, and an authentication unit 28.

  Here, the certificate information acquisition unit 26 acquires the certificate information to be certified via the interface 25, and the certification data extraction unit 27 obtains the certification data from the acquired certificate information. Extract. The authentication unit 28 compares the extracted proof data with the authentication data generated by the authentication data generation unit 201a, and performs authentication based on the degree of coincidence.

FIG. 2 is a flowchart showing an example of processing contents of the certification data generation apparatus 101 according to the first embodiment of the present invention.
Next, each step will be described.

  (S11) The receiver 11 receives a signal transmitted from the positioning satellite. Here, if the signal transmitted from the positioning satellite cannot be normally received, the signal is received again. This received signal includes information such as satellite orbit information (ephemeris), ionospheric correction data, position information (almanac) of other satellites, and correction coefficients of satellite clocks.

  (S12) The extraction unit 12 extracts predetermined information from the information included in the received signal. This predetermined information is one piece of information included in the received signal or a combination of a plurality of pieces of information. Further, from the viewpoint of preventing the forgery of the proof data shown in (S13), it is desirable to conceal which information is extracted from the information included in the received signal.

  (S13) The certification data generation unit 13 generates certification data from the extracted predetermined information. This proof data is a proof for certifying the position or time at which the proof data itself was generated. In the first embodiment of the present invention, the proof data is combined with information to be proved and used.

  (S14) The position or time is calculated by the calculation unit 15 from the extracted predetermined information.

  (S15) The generated certification data and the calculated position or time are displayed on the display unit 14. Here, displaying the calculated position or time together on the display unit 14 is intended to allow the user to easily grasp the position or time at which the proof data is generated. Therefore, the effect of the present invention can be obtained even if the position or time is not always obtained by the calculation unit 15 and displayed on the display unit 14.

FIG. 3 is a flowchart showing an example of processing contents of the authentication data generation device 201a according to the first embodiment of the present invention.
Next, each step will be described.

  (S21) The receiver 21 receives a signal transmitted from the positioning satellite. Here, if the signal transmitted from the positioning satellite cannot be normally received, the signal is received again. This received signal includes information such as satellite orbit information (ephemeris), ionospheric correction data, position information (almanac) of other satellites, and correction coefficients of satellite clocks.

  (S22) The extraction unit 22 extracts predetermined information from the information included in the received signal. This predetermined information is required to include information extracted by the extraction unit 12, and is most preferably the same as the information extracted by the extraction unit 12.

  (S23) The storage unit 23 sequentially stores the extracted predetermined information.

  (S24) The authentication data generation unit 24 generates authentication data from the stored information. This authentication data is used for authentication of the proof data generated by the proof data generation device 101. Note that the storage unit 23 may sequentially store authentication data generated each time information is extracted instead of sequentially storing the extracted information.

FIG. 4 is a flowchart illustrating an example of processing contents of the authentication data generation device 201b according to the first embodiment of the present invention.
Next, each step will be described.

  (S31) The certificate information acquisition unit 26 acquires the certificate information via the interface 25. Here, the certificate-attached information is a combination of the certification data displayed on the display unit 14 provided in the certification data generation apparatus 101, the position or time, and the information to be certified. is there.

  (S32) The certification data extraction unit 27 extracts certification data from the acquired certification information.

  (S33) The authentication unit 28 reads the generated authentication data from the authentication data generation device 201a.

  (S34) Further, the authentication unit 28 compares the extracted certification data with the read authentication data, and authenticates based on the degree of coincidence thereof. Here, the degree of coincidence refers to a matching rate of information used to generate proof data and authentication data, which changes every moment, and whether or not the proof data and authentication data itself match. By this authentication, the position or time at which the proof data is generated is proved. That is, the position or time at which the information to be certified and the certification data are combined is proved.

  FIG. 5 is a diagram showing an example of the display unit 14 according to Embodiment 1 of the present invention. FIG. 6 is a diagram showing an example of processing performed by the proof data generation device 101 and the authentication data generation device 201 according to the first embodiment of the present invention.

  As shown in FIG. 5, the display unit 14 displays the proof data generated by the proof data generation unit 13 and the position or time calculated by the calculation unit 15. Further, the authentication GPS receiver in FIG. 6 includes an authentication data generation unit configured by a reception unit 21, an extraction unit 22, a storage unit 23, and an authentication data generation unit 24 of the authentication data generation device 201. The authentication terminal corresponds to the device 201a, and corresponds to the authentication data generation device 201b including the interface 25, the certificate-attached information acquisition unit 26, the certification data extraction unit 27, and the authentication unit 28.

  The user copies the data displayed on the display unit 14 together with an object to be proved using a camera or the like. The object to be certified includes, for example, the work status at the construction site. Thereby, the user can generate the certificate-added information. Thereafter, when the generated certificate-attached information needs to be certified, the certificate-attached information is authenticated using an authentication terminal. In the authentication with the authentication terminal, the authentication data is extracted from the certificate-attached information, and the authentication data generated at the time when the authentication data is generated in the authentication GPS receiver is read and authenticated. Then, the authentication result is displayed on the display screen of the authentication terminal.

  As described above, if the signal transmitted from the positioning satellite can be received, the proof data and the authentication data are generated using the signal transmitted from the positioning satellite, and the position of the data generated using both data or By performing the time authentication, the user can easily create the certificate-attached information anytime and anywhere. Further, in the present invention, there is no time lag between the generation time of the proof object information, which is the object of proof of position or time, and the generation time of proof data for proof thereof, and more accurate time proof can be performed. The effect is also obtained.

(Embodiment 2)
Embodiment 2 of the present invention will be described below with reference to the drawings. In addition, description is abbreviate | omitted regarding the same structure as Embodiment 1 in this invention.
FIG. 7 is a diagram illustrating an example of the configuration of the proof data generation device 102 and the authentication data generation device 202 according to the second embodiment of the present invention.

In the first embodiment of the present invention, the certificate-added information is acquired by combining the situation to be proved and the data displayed on the display unit 14 in the imaging device 301. In the second form, the certificate-added information is generated by the proof data generation device 102.

  Here, the proof data generation device 102 includes a reception unit 11, an extraction unit 12, a proof data generation unit 13, an interface 16, a proof object information acquisition unit 17, and a synthesis unit 18.

  The certification target information acquisition unit 17 acquires certification target information via the interface 16. The certification target information is a target for certification of position or time, and is, for example, electronic data such as a work situation at a construction site taken by a digital camera or the like. The synthesizing unit 18 synthesizes the proof data generated by the proof data generation unit 13 and the proof object information acquired by the proof object information acquisition unit 17 to generate certificate-attached information.

  In addition, the authentication data generation device 202 includes a reception unit 21, an extraction unit 22, a storage unit 23, an authentication data generation unit 24, an interface 25, a certificate information acquisition unit 26, and a certification data extraction unit. The unit 27 and the authentication unit 28 are included. In the first embodiment of the present invention, the authentication data generation device 201a that generates authentication data and the authentication data generation device 201b that authenticates the certification data and the authentication data are independent of each other. In the second embodiment of the invention, the authentication data generation device 202 performs generation of authentication data and authentication of the proof data and the authentication data.

FIG. 8 is a flowchart showing an example of processing contents of the proof data generation apparatus 102 according to the second embodiment of the present invention.
Next, each step will be described.

  (S41) The receiver 11 receives a signal transmitted from the positioning satellite. Here, if the signal transmitted from the positioning satellite cannot be normally received, the signal is received again. This received signal includes information such as satellite orbit information (ephemeris), ionospheric correction data, position information (almanac) of other satellites, and correction coefficients of satellite clocks.

  (S42) The certification target information is acquired by the certification target information acquisition unit 17 via the interface 16. Here, the certification target information is a target for certification of position or time, and is, for example, electronic data such as a construction site situation photographed with a digital camera or the like.

  (S43) The extraction unit 12 extracts predetermined information from the information included in the received signal. This predetermined information is one piece of information included in the received signal or a combination of a plurality of pieces of information. Further, from the viewpoint of preventing the forgery of the proof data shown in (S44), it is desirable to conceal which information is extracted from the information included in the received signal.

  (S44) The proof data generating unit 13 generates proof data from the extracted predetermined information. This proof data is a proof for proving the position or time at which the proof data itself was generated.

  (S45) The synthesizing unit 18 synthesizes the acquired certification object information and the generated certification data. Thereby, when the certification data is proved by the authentication data generation device 202, the position or time at which the certification target information is combined with the certification data can be certified.

  As described above, if the signal transmitted from the positioning satellite can be received, the certification object information and the certification data are acquired or generated in the same device, and further combined to obtain the certification from the certification target data. Information can be generated mechanically or electronically. Furthermore, the authentication data is generated and stored, and the authentication of the authentication data and the authentication data is performed in the same device, so that the authentication data used for proof of the certificate-attached information is acquired from another device. The effect of saving can also be obtained.

(Embodiment 3)
A third embodiment of the present invention will be described below with reference to the drawings. In addition, description is abbreviate | omitted regarding the same structure as Embodiment 1 and Embodiment 2 in this invention.
FIG. 9 is a diagram illustrating an example of the configuration of the proof data generation device 103 and the authentication data generation device 202 according to the third embodiment of the present invention.

In Embodiment 1 and Embodiment 2 of the present invention, information to be proved is acquired from outside, but in Embodiment 3 of the present invention, information to be proved is used as proof object information for proof. Generated by the data generation unit 103.

  Here, the proof data generation unit 103 includes a reception unit 11, an extraction unit 12, a proof data generation unit 13, a proof object information generation unit 31, and a synthesis unit 32.

  The proof object information generation unit 31 generates proof object information that is an object for proof of position or time. The certification target information is, for example, a work situation at a construction site photographed by a digital camera or the like incorporating the certification data generation unit 103 according to the third embodiment of the present invention, a personal computer or the like incorporating the certification data generation unit 103 Documents created in

  The combining unit 32 combines the proof data generated by the proof data generating unit 13 and the proof object information generated by the proof object information generating unit 31 to generate certificate-attached information.

  As described above, by generating the information to be proved in the proof data generation device, it is possible to generate the certificate-attached information at the same time as the information to be proved is generated. Therefore, if the information can be generated by the proof data generation device, the position or time can be verified more accurately than the information acquired from the outside.

(Embodiment 4)
Embodiment 4 of the present invention will be described below with reference to the drawings. In addition, description is abbreviate | omitted regarding the same structure as Embodiment 1-Embodiment 3 in this invention.
FIG. 10 is a diagram illustrating an example of the configuration of the proof data generation device 101 and the authentication data generation device 203 according to the fourth embodiment of the present invention.

In the first to third embodiments of the present invention, a signal transmitted from a positioning satellite is received by the receiving unit 21 provided in the authentication data generating device 201a, and the information contained in the received signal is used. Although the predetermined information is extracted by the extraction unit 22, in the fourth embodiment of the present invention, predetermined data is acquired from the base station 401 by the authentication data generation device 203 and generated.

  Here, the base station 401 is an electronic reference point or the like, and has information such as information included in a signal transmitted from a positioning satellite and a pseudorange correction value. The authentication data generation device 203 includes an interface 25, a certificate-added information acquisition unit 26, a certification data extraction unit 27, an authentication unit 28, an interface 51, and an authentication data generation unit 52. The

  Here, the authentication data generation unit 52 acquires predetermined information from the information included in the base station 401 via the interface 51, and generates authentication data. The predetermined information used for generating the authentication data is information included in the signal received from the satellite at the position or time to be verified.

  As described above, even when the authentication data generation apparatus cannot directly receive the signal transmitted from the positioning satellite, the authentication data can be generated by using the information that the base station has. Furthermore, in order to acquire information included in the signal transmitted from the positioning satellite that the base station has, it is not necessary to receive the signal transmitted from the positioning satellite in the authentication data generation device, There is also an effect that the configuration of the authentication data generation device can be simplified.

  In the authentication data generation apparatus according to the first to third embodiments of the present invention, predetermined information is acquired from a base station having information included in a signal transmitted from a positioning satellite. Thus, the same effects as those of the fourth embodiment of the present invention can be obtained. In addition, the receiving unit provided in the proof data generation apparatus of the present invention may receive the signal from a base station or the like to which similar information is transmitted without directly receiving information from the satellite.

  Finally, in Embodiments 1 to 4 of the present invention, one satellite or base station is illustrated and described. However, when a plurality of satellites or base stations are required for calculating position or time, etc. The receiving unit included in the certification data generation device or the authentication data generation device refuses to receive a plurality of satellites or signals from the satellites.

It is a figure which shows an example of a structure of the data production | generation apparatus for certification | authentication by Embodiment 1 of this invention, and the data generation apparatus apparatus for authentication. It is a flowchart which shows an example of the processing content of the certification | authentication data generation apparatus by Embodiment 1 of this invention. It is a flowchart which shows an example of the processing content of the data generation apparatus for authentication by Embodiment 1 of this invention. It is a flowchart which shows an example of the processing content of the data generation apparatus for authentication by Embodiment 1 of this invention. It is a figure which shows an example of the display part by Embodiment 1 of this invention. It is a figure which shows an example of the process performed with the data generation apparatus for certification | authentication by Embodiment 1 of this invention, and the data generation apparatus for authentication. It is a figure which shows an example of a structure of the data production | generation apparatus for certification | authentication by Embodiment 2 of this invention, and the data generation apparatus apparatus for authentication. It is a flowchart which shows an example of the processing content of the certification | authentication data generation apparatus by Embodiment 2 of this invention. It is a figure which shows an example of a structure of the data production | generation apparatus for certification | authentication by Embodiment 3 of this invention, and the data generation apparatus apparatus for authentication. It is a figure which shows an example of the structure of the data generation apparatus for certification | authentication by Embodiment 4 of this invention, and the data generation apparatus for authentication. It is a figure which shows an example of a structure of the time information setting apparatus and time certification verification apparatus of patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Reception part 12 Extraction part 13 Proof data generation part 14 Display part 15 Calculation part 16 Interface 17 Proving object information acquisition part 18 Composition part 21 Reception part 22 Extraction part 23 Storage part 24 Authentication data generation part 25 Interface 26 Proof object information Acquisition unit 27 Certification data extraction unit 28 Authentication unit 31 Certification target information acquisition unit 32 Composition unit 51 Interface 52 Authentication data generation unit 101 Certification data generation device 102 Certification data generation device 103 Certification data generation device 201a Authentication data Generation apparatus 201b Authentication data generation apparatus 202 Authentication data generation apparatus 203 Authentication data generation apparatus 301 Imaging apparatus 401 Base station

Claims (7)

A receiving unit for receiving a signal transmitted from a positioning satellite;
An extraction unit for extracting predetermined information from information included in the signal;
A proof data generation unit that generates proof data using the information extracted by the extraction unit;
A proof data generation device comprising: In the proof data generation device according to claim 1,
An interface that obtains certification object information to be certified from outside,
A certification object information acquisition unit for acquiring the certification object information via the interface;
A synthesizing unit that synthesizes the certification object information and the certification data to generate certification-added information;
A proof data generation device comprising: In the proof data generation device according to claim 1,
A certification object information generation unit that generates certification object information to be certified;
A synthesizing unit that synthesizes the certification object information and the certification data to generate certification-added information;
A proof data generation device comprising: In the proof data generation device according to any one of claims 1 to 3,
A calculation unit that calculates a position or time using a signal received by the reception unit,
The synthesizer generates a certificate-attached information by synthesizing the position or time information calculated by the calculator, the proof object information, and the proof data. A receiving unit for receiving a signal transmitted from a positioning satellite;
An extraction unit for extracting predetermined information from information included in the signal;
A storage unit for storing information extracted by the extraction unit;
An authentication data generation unit that generates authentication data using the information stored in the storage unit;
An authentication data generation apparatus comprising: The data generation device for authentication according to claim 5,
An interface for acquiring the certificate-attached information to be certified from outside,
A certificate information acquisition unit for acquiring the certificate information via the interface;
A proof data extraction unit for extracting proof data from the proof certificate information;
An authentication unit for authenticating the proof data and the authentication data;
An authentication data generation apparatus comprising: An interface for acquiring from the outside certificate information to be certified, and authentication data used for authenticating the certificate information;
A certificate information acquisition unit for acquiring the certificate information via the interface;
A proof data extraction unit for extracting proof data from the proof certificate information;
An authentication data acquisition unit for acquiring the authentication data via the interface;
An authentication unit for authenticating the proof data and the authentication data;
The certification data and the authentication data are:
It is generated from information included in the signal transmitted from the positioning satellite,
An authentication data generation apparatus characterized by the above.

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