JP4073724B2 - Patrol recorder system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a patrol recorder system that is used for security patrols of various facilities such as factories, warehouses, buildings, schools, etc., and records the time at each patrol place and enables the certification.
[0002]
[Prior art]
As a conventional patrol recorder system, there is a “circular recording apparatus” found in Japanese Patent Laid-Open No. 61-82288 proposed by the present applicant. This device is a portable patrol recorder system, and a position code is attached from a code device installed at a patrol place during patrol, and the patrol time is recorded in the recorder.
In the central unit, the patrol recorder system collects the code of the recording tour location and the tour time data.
[0003]
There is also a “building operation management device” described in JP-A-9-305813. This device is a device in which a private branch exchange that transmits position change information indicating a change in the position of a portable device possessed by a maintenance staff and a management device connected to the private branch exchange by a telephone line are installed in the above management system. The system includes a traveling time calculation unit that receives the position change information and calculates the traveling time of the maintenance staff, and detects the position information from the portable device and collects the traveling place and the traveling time. is there.
[0004]
[Problems to be solved by the invention]
In the above conventional system, there is no reliability with respect to time accuracy based on time accuracy and malicious alteration, and there is a problem that it is not possible to provide a guarantee for the implementation of patrol.
In other words, even if the time stamp is synchronized with a clock, GPS clock, or radio clock built in the patrol recorder device, the recording of the time stamp does not prove that the time is synchronized, and is recognized by a third party. It was not a thing.
In addition, in certifying that the company / organization that undertook security was actually patrolled, text data, even the time managed by the company / organization undertaken or the time stamp issued by a third-party organization (certification body) Because there is a possibility of tampering, it was not possible to prove authenticity. Further, there is a possibility that other cyclic data can be falsified in the same manner, and the authenticity cannot be proved.
[0005]
Furthermore, a method of requesting a time stamp from a third-party organization by adding location information with GPS using a mobile phone or digital cordless phone is also conceivable. However, location information by GPS is public information, so impersonation of the location ( Falsification) is possible and authenticity cannot be proved.
In addition, there is a method in which a mobile phone or digital cordless phone is used to capture the location by a third-party organization using GPS. However, there are many environments that cannot be captured by GPS, such as underground shopping centers and buildings. There are problems such as the need for an alternative system to capture the position.
[0006]
The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a simple and reliable patrol recorder system which is devised so as to give a guarantee for cyclic implementation and prove its authenticity. It is.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a patrol recorder system according to the present invention comprises a time stamp processing center for issuing a time stamp and a request for issuing the time stamp to the time stamp processing center as described in claim 1. , It consists of a patrol data management center that manages data obtained by the patrolman and a patrol area that the patrolman should patrol, and the patrolman patrols the checkpoint with a portable terminal. A patrol recorder system configured to transmit and record the position information of a checkpoint and its traveling time to a recorder, and a portable mobile radio for traveling, a checkpoint ID transmitter provided at the traveling position, It is composed of a time stamp issuing server, and the portable radio for patrol is wirelessly connected to the checkpoint ID. ID call means for making an ID code call to a communication device, and ID code receiving means for receiving a checkpoint ID code transmitted from a checkpoint ID transmission device in response to the ID call. A time stamp issuance request for wirelessly sending a checkpoint ID, a mobile portable radio ID and / or a patrolman ID to the time stamp issuance server, and making a request for a time stamp to the time stamp issuance server The checkpoint ID transmitting device includes an ID code storage means for indicating a traveling position, and a traveling position ID transmitting means for transmitting an ID in response to an ID call from the traveling portable wireless device. The time stamp issuing server is sent from the clock means for ticking the standard time and the portable wireless device for patrol. It adds the time the ID code, and, characterized by having a time stamp object issuing means for generating and transmitting an encrypted timestamp object to a predetermined server.
[0008]
Further, in the patrol recorder system of the present invention, as described in the second aspect, the structure of the time stamp object includes the time stamp information, the patrol position ID, the patrol portable radio ID, and the patrol member ID or related information. Text information included, encrypted information for online verification in which the text information is encrypted with a private key for verification by a third party, and information in which the text information is encrypted with a private key for offline verification. It is characterized by being.
[0009]
Furthermore, in the patrol recorder system of the present invention, as described in claim 3, the time stamp processing center issues a time server that supplies a standard time and a time stamp issuance process based on the time supplied by the time server. The cyclic data management center includes a time stamp issue request source that requests a time stamp to the time stamp issue server of the time stamp processing center.
[0010]
According to the present invention comprising the above means, a checkpoint ID transmission device using a short-range wireless technology for transmitting a unique checkpoint ID (position information) is installed at each cyclic checkpoint. A member goes around with a portable radio such as a cellular phone with a short-distance radio or a digital cordless phone with a short-distance transmitter. When the patrolman issues a checkpoint ID (location information) transmission request from the portable wireless device to the checkpoint ID transmission device at the checkpoint, the checkpoint ID transmission device checks the validity of the requester and is valid. Distribute checkpoint IDs to patrolmen.
[0011]
Next, when the portable wireless device receives the checkpoint ID, the portable wireless device automatically transmits the checkpoint ID and the portable wireless device ID and / or the patroller ID to the time stamp issuing server, and requests a time stamp from the time stamp issuing system. The time stamp issuing server that requested the time stamp checks the validity of the request, returns the reception confirmation information if it is valid, generates a time stamp from the standard time, and uses the time stamp of the cyclic data management center. Send to the stamp issuer. The time stamp issuance request source stores the sent time stamp (object), transcribes cyclic data from the time stamp object, and uses it as cyclic recording.
[0012]
In addition, when verifying the authenticity of the cyclic data, a time stamp object is transmitted by communication to a time stamp processing center, which is a third party organization (certification organization), and the encrypted information is decrypted for verification (secret key). , Verify / verify, and return verification results online. Also, if verification by the time stamp issuance requester itself is necessary for operation and business, by adding information obtained by encrypting the cyclic data with the offline verification key to the time stamp object, It is possible to verify and verify using the public offline decryption key.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a patrol recorder system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic configuration of a patrol recorder system according to an embodiment of the present invention. In the figure, 10 is a time stamp processing center as an external organization, 20 is a traveling data management center on the client side, 30 is a checkpoint for each checkpoint It is a patrol area that patrols. The time stamp processing center 10 includes a time server 11 and a time stamp issuing server 12 that are synchronized with the world time, and verifies the time stamp. The time server 11 on the center side is synchronized with the coordinated universal time and distributes the time to the time stamp issuing server 12. The time stamp issuing server 12 adds time information to the time stamp target data in response to the time stamp issuing request requested from the traveling portable wireless device 31 that is a portable terminal, and the traveling portable wireless device 31. Reply to
[0014]
In the traveling data management center 20 on the client side, a time stamp issue request source 21 (request source server) is installed. Checkpoints are scattered in the traveling area 30, and checkpoint ID transmission devices (short-range wireless devices) 32 are arranged at the respective checkpoints. The patrolman travels with a portable wireless device 31 such as a mobile phone with a short-range wireless device or a digital cordless phone with a short-range wireless device (for example, PHS).
[0015]
The time stamp issuing server 12 of the time stamp processing center 10 and the time stamp issuing request source 21 of the cyclic data management center 20 include a computer device, a communication device, and the like. The time stamp issuing server 12 of the time stamp processing center 10 and the portable wireless device 31 are communicatively connected through the public telephone line network 41 of the communication packet network 40, and the time stamp issuing request source 21 of the cyclic data management center 20. Are communicably connected via the Internet 42 of the Internet communication packet network 40.
[0016]
The above checkpoint ID transmission device 32 uses a short-range wireless technology that transmits a unique checkpoint ID from each cyclic checkpoint, and each has a specific fixed checkpoint ID that is defined. Yes. Furthermore, in order to enhance the function of preventing position information fraud, a function for generating a one-time password is provided. In addition, the check point ID transmission device 32 has a function of checking the traveling portable wireless device ID and the traveling member ID.
[0017]
In order to communicate with the checkpoint ID transmitter 32 using the short-range wireless technology, the portable mobile radio 31 for traveling uses a mobile phone or digital cordless phone (for example, a built-in short-range wireless transmitter using the short-range wireless technology). , PHS), or a mobile phone or digital cordless phone with a short-range wireless transmitter attached to the outside.
[0018]
FIG. 2 is a block diagram of the standard time stamp issuing server 12 described above. The time stamp issuing server 12 includes a CPU 12A that is an arithmetic control unit, a standard time synchronizing unit 12B that synchronizes with standard time, a communication unit 12C, and an encryption unit 12D. , A data input unit 12E, an information storage unit 12F, and an ID collating unit 12G. The CPU 12A controls the standard time synchronization unit 12B, the communication unit 12C, the encryption unit 12D, the data input unit 12E, the information storage unit 12F, and the ID collation unit 12G, and performs necessary calculations. The standard time synchronization means 12B accepts the standard time from the standard time transmission organization and sets the standard time. The communication unit 12C executes communication via the communication packet network 40 under the control of the CPU 12A. The encryption unit 12D calculates a one-way function value, for example, a hash value, based on a command from the CPU 12A. The data input means 12E inputs various data. The information storage unit 12F stores the encrypted data, and the ID verification unit 12G checks the validity of the license ID.
[0019]
The above hash value is a value calculated by a hash function that is a one-way function, and a one-way function is easy to convert and output a certain input, but can be obtained from an output in the reverse direction. It is a difficult or impossible function. Hash functions are functions that map values from a large domain to a small domain in a broad sense, but hash functions used in cryptography have one-way and non-collisional consistency (original values Are unlikely to have the same result).
[0020]
FIG. 3 is a block diagram of the portable wireless device 31 described above. The portable wireless device 31 includes an external interface 31A, a communication control unit 31B, an audio processing unit 31C, a transmission / reception unit 31D, a panel interface 31E, a control unit 31F, a ROM 31G, The RAM 31H and the clock unit 31T are configured. The external interface 31A transmits and receives to / from the checkpoint ID transmission device 32 that is an external communication device. The communication control unit 31B controls the voice processing unit 31C and the transmission / reception unit 31D. The transmission / reception unit 31D transmits / receives information to / from the communication unit 12C of the time stamp issuing server 12 under the control of the communication control unit 31B. The control unit 31F controls the panel interface 31E, the ROM 31G, and the RAM 31H.
[0021]
FIG. 4 is a block diagram of the checkpoint ID transmitting device 32 described above. The checkpoint ID transmitting device 32 includes a one-time password generating means 32A, an application CPU 32B, an interface function unit 32C, a ROM 32D, and a RAM 32E. Accordingly, a panel interface 32F and a clock unit 32G are installed. The application CPU 32B controls the one-time password generation unit 32A, the interface function unit 32C, the ROM 32D, the RAM 32E, and the panel interface 32F. The one-time password generating means 32A has a function of generating a one-time password for enhancing the function of preventing position information fraud. The checkpoint ID transmitter 32 has a function of checking the portable wireless device ID and the traveling ID.
[0022]
The interface function unit 32C transmits / receives information to / from the transmission / reception unit 31D of the portable wireless device 31, and the location ID information is stored in the ROM 32D.
[0023]
In the patrol recorder system of FIG. 1, the patrol staff transmits identification information such as the mobile radio ID for patrol and the patrol staff ID at each checkpoint to the checkpoint ID transmitter 32, and the checkpoint ID transmitter 32 Request transmission of checkpoint ID. The checkpoint ID transmission device 32 checks the validity of the identification information such as the portable mobile radio ID and the patroller ID, and the checkpoint ID is transmitted to the portable portable radio 31 (including this when a one-time password is used). ). When the traveling portable radio 31 receives the checkpoint ID, it automatically sends the checkpoint ID, the patroller ID, and the patrol to the time stamp issuing server 12 provided by the third party organization (certification organization) or a system linked thereto. The transmission time in the clock possessed by the portable wireless device 31 is transmitted, and a request for issuing a time stamp is made.
[0024]
The time stamp issuing server 12 that requested the time stamp checks the validity of the checkpoint ID (including one when using a one-time password) and the location information, and the mobile portable radio ID for patrol and the patroller ID The validity is checked, and a time stamp is generated from the time when the time stamp issue request is received and the standard time. In addition, the time stamp issuing server 12 returns reception confirmation information to the requesting portable wireless device 31 and converts the checkpoint ID into a checkpoint location name or code to checkpoint ID, portable wireless device ID, and Data obtained by encrypting the cyclic data such as the time stamp and the logo of the third party with the offline verification key and the online verification key and the time stamp object are generated, and the time stamp issuance request source 21 of the cyclic data management center 20 is generated. To the Internet 42. The time stamp object is stored in a language format (for example, XML format data) for describing the cyclic data in a text format or structured data, and is provided by an external request, for example, in XML format data.
[0025]
In addition, by using two asymmetric encryption keys that can verify the authenticity of the cyclic data online, the cyclic data is double-encrypted or separately encrypted with each key to prevent tampering. The offline verification decryption key is a key that is handed over to the time stamp issuing request source 21 in advance. Other offline verification encryption keys, encryption keys that can be verified online, and decryption keys are private keys that are a third party organization. This is a key managed by the stamp processing center 10. The time stamp issuance request source 21 saves the time stamp object sent from the time stamp processing center 10 and transcribes data in text format or structured language format from the time stamp object and uses it as cyclic recording.
[0026]
In the verification of the authenticity of the cyclic data, the online verification of the data authenticity is performed by transmitting the license ID and the time stamp object to the time stamp issuing server 12 of the time stamp processing center 10 and encrypting with the online encryption key (secret key). Decrypted information (private key), collates data in text format or structured language format, and data decrypted with offline encryption key (private key), and returns verification results . In the offline verification of data authenticity, the data encrypted with the offline encryption key (private key) is decrypted using the decryption key for offline verification disclosed by the time stamp issuing request source 21, and is in a text format or structured. Match with language format data.
[0027]
The encrypted information for verification encrypted with the private key for verifying the third-party organization includes text information including the time stamp information, the cyclic position ID code, the portable mobile radio ID information or related information, and the third party. It is possible to encrypt with an encryption key possessed by an institution and to decrypt with a decryption key possessed by a third party institution. In addition, the information encrypted with the offline verification private key is encrypted with text information including the time stamp information, the traveling position ID code, the traveling portable wireless device ID information or related information, using the encryption key owned by a third party organization. Information that can be decoded and decrypted on the predetermined server side.
[0028]
FIG. 5 shows the data structure of a time stamp object. The time stamp object is a checkpoint location name or code (position information, checkpoint ID, etc.) as time stamp information, a portable wireless device ID, a patroller ID, From part A consisting of a third-party institution logo, part B consisting of encrypted information for online verification (information obtained by encrypting part A with an offline verification private key), and information encrypted with an offline verification private encryption key It is comprised by the C section which becomes. The data in part A is cyclic data, which is a language format for describing text data or structured data. The data in part B is a certification authority verification key, which consists of an encryption key and a decryption key. The encryption key is a private key (private key), and the decryption key is also a private key (private). The data in part C is an offline verification key, which consists of an encryption key and a decryption key, the encryption key is a private key (private), and the decryption key is a public key.
[0029]
When verification by the time stamp issuance request source 21 is necessary for operation and business, data (C part) obtained by encrypting the cyclic data with the offline verification key is added to the time stamp object, and the decryption key is used as the time stamp. It is disclosed to the issue request source 21. The time stamp issue request source 21 decrypts the data using a publicly available offline verification decryption key, and provides it so that it can be collated with data in text format or structured language format.
[0030]
FIG. 6 shows a configuration of a patrol recorder system using a local telephone line according to another embodiment of the present invention. In the patrol recorder system of FIG. 6, the cyclic data management center 20 communicates with a time stamp issue request source 21. The base station 22 and the time stamp processing center 10 are configured by a cooperative time server 23 that cooperates with the time server 11 and the time stamp processing server 10 that cooperates with the time stamp issuing server 12 of the time stamp processing center 10. The cooperation time server 23 receives the standard time from the time server 11 of the time stamp processing center 10 and supplies the standard time to the cooperation time stamp issuing server 24. When the traveling portable radio 31 receives the checkpoint ID, it automatically sends the checkpoint ID, the patroller ID, and the transmission time on the clock held by the portable radio 31 to the cooperation time server 24 via the base station 22. To request issuance of a time stamp.
[0031]
The time stamp issuance server 24 that requested the time stamp checks the validity of the checkpoint ID and location information, checks the validity of the checkpoint ID, the portable wireless device ID, and the patroller ID, and issues the time stamp. A time stamp is generated from the standard time for the time the request is received.
[0032]
In addition, the cooperation time stamp issuing server 24 returns the reception confirmation information to the requested mobile portable radio 31 and converts the checkpoint ID into a checkpoint location name or code, and the checkpoint ID and portable radio ID. Further, data obtained by encrypting the cyclic data such as the time stamp and the logo of the third party with the offline verification key and the online verification key and the time stamp object are generated, and the time stamp issue request source 21 distributes the data. The time stamp issuance request source 21 stores the time stamp object sent from the cooperative time stamp issuance server 24, and transcribes data in text format or structured language format from the time stamp object to be used as cyclic recording. .
[0033]
7, 8 and 9 are operation flowcharts of the object type patrol recorder system. As shown in FIG. 7, as shown in FIG. 7, in step S <b> 1, the mobile mobile radio 31 is a mobile radio ID, a patrol person ID, etc. The confirmation information is transmitted to the checkpoint ID transmission device 32 and a checkpoint ID is requested. In step S2, the transmission time is transmitted to the time stamp issuing server 12 using the personal identification information such as the checkpoint ID, portable wireless device ID, and patroller ID, and the clock held by itself, and the time stamp issuance is requested. In step S3, confirmation information is received from the standard time stamp issuing server 12.
[0034]
As shown in FIG. 8, the checkpoint ID transmitting device 32 checks the validity of the personal identification information in response to the checkpoint ID request from the mobile portable radio 31 in step S4, and if it is valid, the step The process proceeds to S5 to generate a one-time password as necessary, and then the process proceeds to step S6 to return the one-time password and the checkpoint ID to the traveling portable radio 31.
[0035]
As shown in FIG. 9, the standard time stamp issuing server 12 checks the validity of the personal identification information in response to the time stamp issuing request from the traveling portable wireless device 31 in step S7. In step S8, the validity of the position information is checked. If the position information is valid, the process proceeds to step S9 to generate a time stamp of the reception time, and the reception confirmation information is returned to the traveling portable radio 31 in step S10. In step S11, the checkpoint ID is converted into a checkpoint location name or code, and in step S12, the cyclic data is encrypted with the offline verification key and the online verification key (parts B and C in FIG. 5). In S13, a time stamp object is generated.
[0036]
As shown in FIG. 10, the time stamp issuance request source 21 of the cyclic data management center 10 transcribes and records the cyclic data from the time stamp object sent from the standard time stamp issuance server 12 in step S14, and in step S15. Save the timestamp object.
[0037]
FIG. 11 is an online verification flowchart, and as shown in FIG. 11, the time stamp issue request source 21 sends the license ID and time stamp object to the standard time stamp issue server 12 in step S16. In step S17, the verification result from the time stamp issuing server 12 is received.
[0038]
As shown in FIG. 12, the standard time stamp issuance server 12 checks the validity of the license ID in step S18 in response to the license ID and time stamp object verification request from the time stamp issuance request source 21. In step S19, part B of the time stamp object is decrypted with the online secret key. In step S20, the decrypted data and the extracted data (part A in FIG. 5) of the time stamp object are collated, and in step S21, the verification result (non-tampering determination) is transmitted to the time stamp issue request source 21.
[0039]
FIG. 13 is an offline verification flowchart. As shown in FIG. 13, the time stamp issue request source 21 of the cyclic data management center 10 decrypts the C part of the time stamp object with the offline public key in step S22. In S23, the decrypted data is collated with the extracted data (A part) of the time stamp object.
[0040]
As described above, in order to prevent unauthorized use of the checkpoint ID, a checkpoint ID is set by a third party organization (certification organization), and the checkpoint ID is not disclosed to the time stamp issue request source 21. The relationship between the checkpoint ID and the installation location is managed only by a third-party organization, so that records such as time stamps issued by third parties and records of patrol location information cannot be intervened by patrolmen or administrators. By providing a time stamp object that is found to be tampered with the trace of the tampering by the method, the time information of the time stamp and the record of the circulating place become the objective cyclic recording.
[0041]
In addition, when the patrol work is outsourced, the relationship between the checkpoint ID and the installation location is disclosed and operated only to the outsourcer, or the relationship between the checkpoint ID and the installation location is the time stamp issue request source. Flexible operation, such as when publishing to 21.
[0042]
【The invention's effect】
As described above, according to the patrol recorder system according to the present invention, each patrol point ID transmitted to the patrol portable radio device at the time of patrol, together with the patrol radio ID or its owner ID, is a third party organization. The time stamp issuing server generates a time stamp object with a time attached to the time stamp server and sends it to a predetermined server. Since the correct time of the third party is sent directly to the server that manages the patrol work, it is possible to prevent illegal operations such as falsification of the time by the patrol person.
[0043]
In addition, according to the present invention, in the position of managing the patrol work, a simple patrol time or the like is verified off-line from the time stamp object sent from a third-party organization as necessary. Can be verified at a third party, so that both simplicity and reliability can be achieved at the same time, and at the same time, the creditworthiness of the customer with respect to the patrol work can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration of a patrol recorder system according to an embodiment of the present invention.
FIG. 2 is a configuration block diagram of a standard time stamp issuing device of a patrol recorder system according to an embodiment of the present invention.
FIG. 3 is a configuration block diagram of a portable radio device of the patrol recorder system according to the embodiment of the present invention.
FIG. 4 is a configuration block diagram of a checkpoint ID transmission device of a patrol recorder system according to an embodiment of the present invention.
FIG. 5 is an explanatory diagram showing a data structure of a time stamp object used in the patrol recorder system according to the embodiment of the present invention.
FIG. 6 is a block diagram showing a schematic configuration of a patrol recorder system according to another embodiment of the present invention.
FIG. 7 is an operation flowchart of the portable radio device used in the patrol recorder system according to the embodiment of the present invention.
FIG. 8 is an operation flowchart of the checkpoint ID transmission device in the patrol recorder system according to the embodiment of the present invention.
FIG. 9 is an operation flowchart of the time stamp issuing device in the patrol recorder system according to the embodiment of the present invention.
FIG. 10 is an operation flowchart of a time stamp issue request source in the patrol recorder system according to the embodiment of the present invention.
FIG. 11 is an on-line verification flowchart of the time stamp issuing device in the patrol recorder system according to the embodiment of the present invention.
FIG. 12 is an on-line verification flowchart of the time stamp issuing device in the patrol recorder system according to the embodiment of the present invention.
FIG. 13 is an offline verification flow chart of a time stamp issue request source in the patrol recorder system according to the embodiment of the present invention.
[Explanation of symbols]
10 Time stamp processing center on the center side
11 Time server
12 Time stamp issuing server
20 Travel Data Management Center
21 Time stamp issue request source
22 Base station
23 Cooperation time server
24 Cooperation time stamp issuing server
30 patrol area
31 Portable radio for patrol
32 Checkpoint ID transmitter
40 packet communication network
41 Public telephone network
42 Internet network

Claims (3)

The time stamp processing center that issues time stamps, the time stamp processing center requesting issuance of the time stamps, and the data management center that manages the data obtained by the patrolman A patrol recorder that consists of a patrol area and is configured so that the patrolman has a portable terminal and circulates the checkpoint, and transmits the location information of the circulated checkpoint and the tour time to the recorder for recording. A system,
It consists of a portable mobile radio for patrol, a checkpoint ID transmission device provided at the patrol position, and a time stamp issuing server,
The traveling portable wireless device includes an ID call means for making an ID code call to the checkpoint ID transmission device wirelessly, and a checkpoint ID code transmitted from the checkpoint ID transmission device in response to the ID call. ID code receiving means for receiving the checkpoint ID and the portable wireless device ID for traveling and / or the traveling member ID sent wirelessly to the time stamp issuing server, and the time stamp should be given Having a time stamp issue request means for making a request to the time stamp issue server,
The checkpoint ID transmission device includes an ID code storage unit that indicates a traveling position, and a traveling position ID transmission unit that transmits an ID in response to an ID call from the traveling portable wireless device,
The time stamp issuance server adds a time to a clock means for ticking a standard time and the ID code sent from the mobile portable radio device, and generates an encrypted time stamp object. A time stamp object issuing means for transmitting to a predetermined server,
A patrol recorder system characterized by that.   The time stamp object is composed of text information including time stamp information, patrol position ID, patrol portable radio ID and / or patrol member ID or related information, and the text information is encrypted with a third party verification secret key. The patrol recorder system according to claim 1, wherein the encrypted information for on-line verification and information obtained by encrypting the text information with an off-line verification secret key are configured.   The time stamp processing center includes a time server that supplies a standard time, and a time stamp issuing server that issues a time stamp based on the time supplied by the time server. The cyclic data management center includes the time stamp processing. The patrol recorder system according to claim 1 or 2, comprising a time stamp issue request source that requests a time stamp issue server of a center.

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