JP2002342515A - Terminal device, center device, computer system, certificate issue processing method, and certificate identification information processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To issue a certificate having the same reliability even if a portable terminal device is unable to communicate with a center device. SOLUTION: The terminal device generates a certificate ID by using dealing contents information and a specific dealing sequence if the device can not communicate with the center device when receiving a certificate generation instruction. The generated certificate ID, dealing contents information, and used dealing sequence data are saved. Then the generated certificate ID and dealing contents information are printed out. When the terminal device becomes able to communicate with the center device after the certificate ID is generated, the saved certificate ID, dealing contents information, and dealing sequence are sent to the center device. The center device, on the other hand, generates a 2nd certificate ID by using the dealing contents information and dealing sequence data determined with the received dealing sequence data and compares the received certificate ID with the 2nd certificate ID. When the certificate ID and 2nd certificate ID do not match each other, an alarm is outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for issuing, as a proof of a transaction in various transactions, using a terminal device and a center device.

[0002]

2. Description of the Related Art Conventionally, when issuing a certificate that is a proof of a very important transaction such as an insurance policy, the following manner has been performed. That is, a copy-type certificate sheet, which is provided with a unique serial number and prints a pattern or the like that is difficult to forge, is printed, and distributed to dealers (agents) and the like. At the time of distribution to dealers, record the serial number of the distributed certificate paper as a record. When a transaction occurs at a store or the like, a certificate is issued using a certificate sheet distributed to the store or the like, and a copy of the certificate is stored. Certificate papers that have been filled out but not passed on to the customer, such as miswritten certificate papers or certificate papers issued but invalidated once due to cancellation, etc., will be collected. Certificate papers not used within a predetermined period are collected at the end of the period. By such a mechanism, it has been conventionally performed to prevent forgery of a certificate and to secure the reliability as evidence of the certificate.

[0003] However, in the case of using a copy-type certificate sheet with a serial number, an error may occur in the transaction effective date and time due to negligence or intentional error in the date and time record when the transaction actually occurred, There is a possibility,
There was a problem as evidence of the certificate.

[0004] In addition, since the operation is performed using printed paper, there is a problem that operation costs such as printing costs, transportation costs, storage costs, and management costs are high.

[0005] Furthermore, since the issuance is performed by handwriting, it is necessary to separately input transaction contents to a computer system, and there has been a problem that efficient office work cannot be performed.

In addition, a technique for managing a certificate by registering a certificate unique number, a right holder number, and a status of issuance (information such as a loss or unissued) at the time of issuance of the certificate (for example, Japanese Patent Application Laid-Open No. H7-168898). And Japanese Patent Application Laid-Open No. Hei 7-160785), but the reliability of the certificate has not been sufficiently improved.

[0007]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a technique for enabling a more reliable certificate to be issued using a terminal device.

[0008] Still another object is to issue a certificate having the same reliability as the case where communication is possible even when communication between the portable terminal device and the transaction management center device is impossible. Is to provide technology for

[0009]

According to a first aspect of the present invention, there is provided a terminal device comprising: certificate identification information (for example, an implementation certificate) generated from data representing transaction contents and transaction sequence data for managing the transaction. Acquisition means (for example, the transaction management unit 32 in the embodiment) for acquiring the certificate ID in the embodiment, and means for outputting at least a part of the certificate identification information and the data representing the transaction contents (for example, the print control in the embodiment). And a printer 39).

[0010] As described above, the certificate identification information generated from the data representing the transaction content and the transaction sequence data, which is internal data normally not shown to a human, can be added to the certificate, and the transaction content is represented. The certificate identification information can be verified using the data and the transaction sequence data. Therefore, the reliability of the certificate can be improved.

In the first embodiment of the present invention, when communication with a center device (for example, the transaction management center device 5 in the embodiment) cannot be established at the time of receiving a certificate creation instruction (in the case of an off-line certificate issuance in the embodiment) )
A certificate identification information generating means (for example, a certificate ID assigning unit 40 in the embodiment) for generating certificate identification information using data representing transaction contents and transaction sequence data determined by a predetermined rule; The storage unit (for example, the transaction content storage unit 3 in the embodiment) stores the certificate identification information generated by the identification information generation unit, the data representing the transaction content, and the transaction sequence data corresponding to the transaction.
7), the acquisition means described above may acquire the certificate identification information from the certificate identification information generating means.

[0012] It is good if the terminal device can be fixedly connected to the center device by being installed in a certain place. However, when the terminal device is carried as a portable terminal, the communication line cannot be used depending on the place of use. In some cases, it may be necessary to issue a certificate in a location where radio waves do not reach, or where the radio waves may not reach. It is inconvenient if you cannot issue a certificate in such a place. By employing the above-described configuration, even when communication with the center device cannot be performed at the time of receiving a certificate creation instruction, certificate identification information can be generated, and a highly reliable certificate can be issued. be able to.

Further, in the first aspect of the present invention, when communication with the center device can be established at the time of receiving a certificate creation instruction (in the case of issuing an online certificate in the embodiment), at least data representing the transaction content is transmitted. Transmission means for transmitting to the center device (for example, the communication processing unit 31 in the embodiment) and receiving means for receiving the certificate identification information from the center device (for example, the communication processing unit 3 in the embodiment)
1), and the acquisition unit described above may acquire the certificate identification information from the reception unit.

When communication with the center device is possible as described above, certificate identification information can be acquired from the center device, and a certificate with higher reliability can be issued. In addition, since the data representing the details of the transaction is transmitted to the center device, the information can be used in the center device, and it is not necessary to perform the work of re-entering the information of the certificate into the computer system separately. Become.

When communication with the center device can be established after the certificate identification information is generated by the certificate identification information generating means, the certificate identification information stored in the storage device and the data representing the transaction contents, the transaction sequence, The data may be transmitted to the center device. In this way, for example, information can be automatically sent to the center device when communication becomes possible, so that the convenience of the operator of the terminal device is increased, and the operator of the terminal device is further improved. Fraud can be reduced.

Further, in the first aspect of the present invention, a transaction sequence determining means for determining transaction sequence data to be used next from the transaction sequence data held in the terminal device (for example, transaction sequence management in the embodiment). (41), and the certificate identification information generating means described above may be configured to generate certificate identification information using the next transaction sequence data determined by the transaction sequence determination means. . For example, the certificate identification information generating unit generates the certificate identification information using the transaction sequence data held immediately before or new transaction sequence data generated from the transaction sequence data held immediately before. Things.

Further, the certificate identification information and the latest transaction sequence data on the center device side are received from the center device. The configuration may be such that the certificate identification information is generated using the device-side transaction sequence data and the transaction content data. As described above, since the processing is performed using the transaction sequence data on the terminal device side and the transaction sequence data on the center device side, the reliability of the certificate identification information can be further improved.

[0018] In the first aspect of the present invention, the apparatus further comprises means for causing the display device to display a message indicating that communication is being established even when communication with the center device cannot be established at the time of receiving a certificate creation instruction. Is also good. Accordingly, the operator of the terminal device does not know whether the certificate identification information is issued by the center device or the terminal device, and it becomes difficult for the operator to commit fraud.

Further, in the first aspect of the present invention, the time change detecting means for detecting an operation of changing the time information in the terminal device by the operator of the terminal device, and the time change detecting means detecting the time information changing operation in the terminal device. If it is detected, the configuration may further include means for stopping the processing of the certificate identification information generating means until the processing for time synchronization with the center device is performed. As a result, the issue time of the certificate cannot be falsified.

Further, the above-mentioned certificate identification information generating means may be used to generate the certificate identification information by the certificate identification information generating means and the sum of the transaction amounts included in the data representing the transaction contents used in generating the certificate identification information. The configuration may be such that the processing is stopped when at least one of them exceeds a predetermined criterion. This prevents a situation where too much certificate identification information is generated in the terminal device, and prevents improper operation.

Note that the terminal device described above can be configured as a debit terminal device. That is, the payment function can be provided, and the high security performance of the debit terminal device can be used.

A center device according to a second aspect of the present invention comprises:
Transaction sequence management means (for example, transaction sequence management unit 54 in the embodiment) for managing transaction sequence data for managing transactions, and data representing transaction contents, transaction sequence data, and representing the transaction contents from a terminal device. Receiving the data and the certificate identification information generated from the transaction sequence data determined by the predetermined rule (in the case of issuing the offline certificate in the embodiment);
A receiving unit (for example, the communication processing unit 51 in the embodiment) for storing the transaction content stored in the storage device and a transaction sequence stored in the storage device;
The second certificate identification information is generated using the transaction sequence data determined by the transaction sequence management means based on the data, and the certificate identification information stored in the storage device and the second certificate identification information are generated.
A collation unit (for example, the certificate ID assignment verification unit 53 in the embodiment) for collating the certificate identification information with the certificate identification information, and a warning when the collation unit determines that the certificate identification information does not match the second certificate identification information. Means for setting information for

When the terminal device generates the certificate identification information, the center device receives the certificate identification information and performs a verification process. Thereby, when the terminal device side performs the fraud, the fraud can be detected. When detected, information for warning for notifying an administrator or the like is set.

In the second aspect of the present invention, when the receiving means receives data representing the transaction contents without the certificate identification information from the terminal device (in the case of issuing the online certificate in the embodiment), the transaction sequence Management means for generating transaction sequence data, certificate identification information generation means for generating certificate identification information using data representing transaction contents and transaction sequence data generated by the transaction sequence management means, and certificate identification information generation Transmitting means (for example, the communication processing unit 51 in the embodiment) for transmitting the certificate identification information generated by the means and the transaction sequence data generated by the transaction sequence management means to the terminal device. Is also good.

When the data representing the transaction content is received without the certificate identification information from the terminal device, the terminal device does not generate the certificate identification information. Send to terminal device. In addition, the transaction sequence data generated on the center device side for issuing the off-line certificate is transmitted to the terminal device. Since certificate identification information is generated on the secure center device side,
A highly reliable certificate issuing system is constructed.

In the second aspect of the present invention, when the receiving means receives the data representing the transaction contents and the terminal apparatus-side transaction sequence data without the certificate identification information from the terminal apparatus, Certificate identification information generating means for generating center device side transaction sequence data and generating certificate identification information using the data representing the transaction contents, the terminal device side transaction sequence data, and the center device side transaction sequence data. Transmitting means for transmitting, to the terminal device, the certificate ID assignment verification unit 53), the certificate identification information generated by the certificate identification information generating means, and the center apparatus-side transaction sequence data generated by the transaction sequence management means. May be further provided. By using the terminal device-side transaction sequence data and the center device-side transaction sequence data, reliability can be further improved.

[0027] Further, the above-mentioned collating means may include a terminal device-side transaction sequence determined by the transaction sequence management means based on the data representing the transaction content stored in the storage device and the transaction sequence data stored in the storage device. A configuration in which second certificate identification information is generated using the data and the center apparatus side transaction sequence data, and the certificate identification information stored in the storage device is compared with the second certificate identification information; Is also good. Even when the certificate identification information is generated on the terminal device side using the center device side transaction sequence data and the terminal device side transaction sequence data, the verification process can be performed.

It is to be noted that even a configuration in which a means (for example, the transaction content storage processing unit 56 in the embodiment) that acquires the time at which the data representing the transaction content is received from the terminal device and stores it in the storage device is further provided. Good. This is for the case where the transaction time is important. In addition, a configuration may be provided that further includes means for transmitting the acquired time information to the terminal device. This is to synchronize the time between the terminal device and the center device.

Further, in the second aspect of the present invention, when the information for settlement of the transaction is received together with the data representing the contents of the transaction, the information for settlement is transmitted to the computer for the settlement processing. (For example, the information distribution device 7 in the embodiment).

The apparatus according to the first and second aspects of the present invention can be implemented by a combination of computer hardware and a program for causing the apparatus to function as described above. The program is stored in a storage medium or storage device such as a flexible disk, a CD-ROM, a magneto-optical disk, a semiconductor memory, and a hard disk. The program may be distributed via a network. Further, data being processed is temporarily stored in the memory of the computer. The processing of the program can be expressed as a certificate issuance processing method or a certificate identification information processing method.

[0031]

[First Embodiment] FIG. 1 shows a schematic diagram of a system according to a first embodiment of the present invention. For example, a network 1, which is a public network, includes a transaction management center device 5 and an information terminal device 3 (information terminal device A (3a)).
When,. . . Information terminal device N (3n)) is connected.
The number of information terminal devices is arbitrary. The network 1 may be an insecure network such as the Internet. In this case, the information terminal device and the transaction management center device 5 exchange encrypted data. Further, the information terminal device may be configured to have a wireless communication function like the information terminal device N (3n). When the information terminal device N (3n) performs wireless communication (including some wireless communication) with the transaction management center device 5, there is also a case where encrypted data is exchanged.

FIG. 2 shows a functional block diagram of the information terminal device A (3a). The information terminal device A (3a) includes a communication processing unit 31 that communicates with the transaction management center device 5, a transaction management unit 32 that controls the entire information terminal device A (3a), a display device 34, and an input device 35. And display device 3
4, an input / output control unit 33 for performing input / output control on the input device 35, a transaction content storage unit 37 for storing data and the like representing the transaction content, and a data and the like representing the transaction content for the transaction content storage unit 37. Transaction content storage processing unit 36 to be stored
And a printer 39, a print control unit 38 that controls the printer 39 to print a certificate, a certificate ID assignment processing unit 40 that generates a certificate ID when communication with the transaction management center device 5 is not possible, and manages a transaction sequence. It has a transaction sequence management unit 41 and a transaction sequence storage unit 42 for storing a received or generated transaction sequence. When the information terminal device A (3a) also functions as a debit terminal device or a credit card terminal device, a card reader 43 for reading a debit card may be provided. The transaction sequence is, for example, a management number assigned to manage the transaction, and is for detecting an illegal process in the exchange between the information terminal device and the transaction management center device.

Although not shown, an authentication processing unit for judging whether or not the operator is an appropriate person in operating the information terminal device 3 may be provided. Authentication information based on a password or biometrics is registered in this authentication processing unit, and authentication processing based on the password or biometrics input at the time of transaction input is performed. Note that the authentication information may be registered not for each physical information terminal device 3 but for each transaction type. In addition, instead of registering the authentication information in the authentication processing unit of the information terminal device 3, the authentication information is registered in the transaction management center device 5 and acquired from the transaction management center device 5 when necessary. It is possible.

FIG. 3 shows a functional block diagram of the transaction management center device 5. Communication processing unit 51 that communicates with information terminal device 3
And a transaction management unit 52 that controls the entire transaction management center device 5 and a process for generating a certificate ID when the information terminal device 3 does not generate a certificate ID. When an ID is generated, a certificate ID assignment verification processing unit 53 that performs a verification process of the certificate ID, a transaction sequence management unit 54 that manages a transaction sequence, and a transaction sequence storage that stores a received or generated transaction sequence and the like. Unit 55, a time signal synchronization clock 59 such as a radio wave (FM) clock, a time management unit 58 that obtains time information from the time signal synchronization clock 59, data representing transaction contents, and a certificate I.
It has a transaction content storage unit 57 for storing D, transaction sequence, and time information, and a transaction content storage processing unit 56 for storing various information in the transaction content storage unit 57.

Next, FIGS. 1 to 3 will be described with reference to FIGS.
The operation of the system shown in FIG. First, a main processing flow of the information terminal device 3 will be described with reference to FIG. The operator of the information terminal device 3 operates the input device 35 to input the transaction content information, and the transaction management unit 3 via the input / output control unit 33.
2 receives the transaction content information. Further, the operator of the information terminal device 3 operates the input device 35 to input a certificate creation instruction, and the transaction management unit 32 via the input / output control unit 33.
Receives the certificate creation instruction (step S1). Then, the communication control unit 31 determines whether communication with the transaction management center device 5 is possible (step S3). If communication is possible, the transaction management unit 32 clears the off-line transaction amount. The off-line transaction amount is calculated to limit the transaction amount for transactions for which a certificate ID can be continuously generated on the information terminal device 3 side to prevent fraud. The case where the certificate ID is generated on the information terminal device 3 side may be referred to as an offline case or an offline certificate issuance case. In addition, the number of consecutive offline times is cleared (step S5). The continuous off-line count is also counted in order to limit the number of transactions in which the certificate ID can be continuously generated on the information terminal device 3 side for fraud prevention.

Then, a certificate ID obtaining process is performed (step S7). This certificate ID acquisition process is a process of acquiring a certificate ID from the transaction management center device 5, and will be described later in detail. Further, the transaction management unit 32 determines whether there is other information to be transmitted (step S9). The other information to be transmitted is, for example, a transaction content when a certificate creation instruction is received but communication with the transaction management center device 5 is not possible, and the information terminal device 3 generates a certificate ID and issues a certificate. It is transaction statement data (detailed later) stored in the storage unit 37. The transaction management unit 32 checks whether there is any untransmitted transaction statement data in the transaction content storage unit 37 via the transaction content storage processing unit 36. If there is transaction statement data that has not been transmitted, an information transmission process is performed (step S11). This information transmission process will also be described later in detail. Then, a certificate is printed using the acquired certificate ID and transaction content information (step S13).

On the other hand, if the communication control unit 31 determines that communication with the transaction management center device 5 is not possible, the transaction management unit 32 determines whether the clock of the information terminal device 3 has been manually changed ( Step S15). That is, the transaction management unit 32 checks the clock of the information terminal device 3 and detects a change led by the clock. In the case where the information terminal device 3 is offline and the clock of the information terminal device 3 is manually changed, the operator of the information terminal device 3 may be trying to perform wrongdoing. Therefore, confirmation is performed in step S15 to prevent fraud. If the clock has been manually changed, a transaction refusal is displayed on the display device 34 via the input / output control unit 33 (step S25). Even if communication is not possible, the transaction management unit 32 may display on the display device 34 that communication is in progress. As a result, the operator of the information terminal device 3 does not notice that the user is off-line, and it is possible to make it harder for fraud.

If the clock has not been manually changed, the transaction management section 31 determines whether or not the cumulative total of the off-line transaction amounts is less than a specified value (step S17). This is because it is highly possible that fraud is performed when the user is offline, and the amount of the transaction related to fraud does not increase.
If the total of the offline transaction amounts is equal to or greater than the specified value, a transaction refusal is displayed on the display device 34 via the input / output control unit 33 (step S27). On the other hand, if the total of the offline transaction amounts is less than the specified value, the offline transaction amount is increased by the current transaction amount (step S).
19).

Then, the transaction management section 31 determines whether or not the number of continuous offlines is less than a specified value (step S2).
1). This is because it is highly possible that fraud is performed when the user is offline, and the number of fraudulent transactions is not increased. If the number of continuous offlines is equal to or more than the specified value, the transaction disabling is displayed on the display device 34 via the input / output control unit 33 (step S25). On the other hand, if the continuous offline number is less than the specified value, the continuous offline number is incremented by 1 (step S23). Then, a certificate ID generation process is performed (step S24).
This processing will be described later in detail. Then step S1
Move to 3.

In such a process, the information terminal device 3 can issue a certificate with a certificate ID generated using the transaction sequence, regardless of whether the information terminal device 3 can or cannot communicate with the transaction management center terminal 5. become. Note that the certificate may be electronic certificate data.

Next, a first example of the certificate ID acquisition process (step S7) when online is described with reference to FIG. The example of FIG. 5 is an example using one transaction sequence. In this case, the transaction management unit 32 transmits the transaction statement data (no transaction sequence) to the transaction management center device 5 using the communication processing unit 31 (Step S26). An example of the transaction statement data will be described with reference to FIG. The transaction details data includes a terminal ID, transaction date, transaction time, transaction amount, issuer name (for example, operator name), issuer name (customer name), and additional information. Although the transaction sequence and the certificate ID are shown in parentheses in FIG. 6, they are not included in the transaction statement data transmitted in step S26.

When the transaction statement data is transmitted to the transaction management center device 5 in step S26, the transaction management center device 5 executes the process, and sends the certificate ID, transaction sequence, and time information, which is the processing result, to the information terminal device 3. Send. Therefore, the communication processing unit 31 of the information terminal device 3 receives the certificate ID, the transaction sequence, and the time information from the transaction management center device 5 and stores the information in the storage device (step S2).
7). As shown in FIG. 7, the transaction management center device 5 adds the transaction sequence and certificate ID information in the format of FIG. 6, and changes the transaction time to the time of the transaction management center device 5 or updates the current time information. It may be transmitted to the information terminal device 3 in a form added separately.

Next, the transaction management unit 32 passes the received transaction sequence to the transaction sequence management unit 41 via the certificate ID assignment processing unit 40, and the transaction sequence management unit 41 stores the latest transaction sequence in the transaction sequence storage unit 42. Is updated by the received transaction sequence (step S2).
8). Then, the transaction management unit 32 updates the time of the information terminal device using the received time information (step S2).
9). Thereby, the time with the transaction management center device 5 is synchronized. It should be noted that the received time information may not only be set as it is, but may be set in consideration of the time spent by the network 1.

As described above, the certificate ID generated by the transaction management center device 5 can be obtained. You can get a certificate ID online,
Is very reliable.

Next, a second example of the certificate ID acquisition process (step S7) when online will be described with reference to FIG. The second example is an example in which two transaction sequences, an information terminal device-side transaction sequence and a transaction management center device-side transaction sequence, are used. First, the transaction sequence management unit 41 generates a new information terminal device-side transaction sequence (also called the next information terminal device-side transaction sequence) and stores it in the transaction sequence storage unit 42 (step S3).
1). Then, the transaction sequence management unit 41 outputs the generated information terminal device-side transaction sequence to the transaction management unit 32, and the transaction management unit 32 generates transaction statement data including the information terminal device-side transaction sequence. Is transmitted to the transaction management center device 5 by using (step S3).
5). The transaction statement data transmitted in step S35 includes, for example, a terminal ID, a transaction sequence (information terminal device-side transaction sequence), a transaction date, a transaction time, a transaction amount, an issuer name, an issuer name, as shown in FIG. And additional information. Note that the column of the certificate ID is empty.

On the other hand, the transaction management center device 5 generates a certificate ID and a transaction sequence on the transaction management center device side, and acquires time information. Then, the certificate ID, the transaction sequence on the transaction management center device side, and the time information are transmitted to the information terminal device 3. The communication processing unit 31 of the information terminal device 3 receives the certificate ID, the transaction sequence on the transaction management center device side, and the time information from the transaction management center device 5 (step S35). Note that the transaction management center device 5
As shown in FIG. 7, the certificate I in the format of FIG.
The information of D is added, the transaction sequence is changed to the transaction management center device side transaction sequence, and the transaction time is changed to the time of the transaction management center device 5 or the current time information is separately added and transmitted to the information terminal device 3. In some cases.

Then, the transaction management unit 32 that has obtained the transaction sequence on the transaction management center device side from the communication processing unit 31
The transaction management center device side transaction sequence is passed to the transaction sequence management unit 41 via the certificate ID assignment processing unit 40. The transaction sequence management unit 41 updates the latest transaction management center device-side transaction sequence stored in the transaction sequence storage unit 42 to the received transaction management center device-side transaction sequence (step S37). And transaction management part 32 updates the time of this information terminal unit using the received time information (Step S39). Thereby, the time with the transaction management center device 5 is synchronized.

In this way, the transaction management center device 5 can acquire the certificate ID. Since the certificate ID is obtained online, the reliability of the certificate ID is very high. Further, since the generation of the certificate ID is performed using the information terminal device-side transaction sequence and the transaction management center device-side transaction sequence as described later, the reliability can be further improved.

Next, a first example of the certificate ID generation process (step S24) when offline will be described with reference to FIG. A more specific example will be described later in detail with reference to FIG. The first example is an example using one transaction sequence. The transaction sequence management unit 41 determines a transaction sequence to be used for generating a certificate ID from the transaction sequence held in the information terminal device (step S4).
1). For example, when the held transaction sequence itself (that is, the latest transaction sequence received from the transaction management center device 5) is used, or when a new transaction sequence is generated (for example, the latest transaction sequence received from the transaction management center device 5). Is generated using the above transaction sequence). This depends on what kind of transaction sequence is assumed. For example, when a different transaction sequence sequence is used for each information terminal device, a new transaction sequence may be generated. However, in the present embodiment, the held transaction sequence itself (the latest transaction sequence received from the transaction management center device 5) is used.

Next, the certificate ID assigning section 40 generates a certificate ID from the used transaction sequence and the transaction content information (step S43). The transaction content information is, for example, all or a part of the transaction statement data shown in FIG. As the algorithm for generating the certificate ID from the used transaction sequence and the transaction content information, for example, an algorithm for generating a message digest of the transaction content information using the used transaction sequence as a key can be used.

The transaction management unit 32 receives the used transaction sequence and the certificate ID from the certificate ID assignment processing unit 40, generates transaction statement data including the used transaction sequence and the certificate ID, and transmits the transaction details data via the transaction content storage processing unit 36. The transaction details data is stored in the transaction content information storage 37 (step S45).

If the transaction statement data can be generated in this way, the printing of the certificate can be executed. Therefore, a certificate can be issued even in the case of off-line, thereby facilitating transactions and improving customer service.

A second example of the certificate ID generation process (step S24) when offline will be described with reference to FIG. The second example is an example in which two transaction sequences, an information terminal device-side transaction sequence and a transaction management center device-side transaction sequence, are used. A specific example will be described later in detail with reference to FIG. First, the transaction sequence management unit 41
Generates a new information terminal device-side transaction sequence from the current information terminal device-side transaction sequence held in the transaction sequence
(Step S51). The process of generating a new information terminal device-side transaction sequence from the current information terminal device-side transaction sequence is to generate the next information terminal device-side transaction sequence in the sequence of the information terminal device-side transaction sequence, for example. For example, if the current information terminal device-side transaction sequence is 1, processing such as generating 2 is performed.

The transaction sequence management section 41 acquires the immediately preceding information terminal apparatus-side transaction sequence stored in the transaction sequence storage section 42 (step S53).
Furthermore, the latest transaction management center device-side transaction sequence stored in the transaction sequence storage unit 42 (the transaction management center device-side transaction sequence acquired from the transaction management center device 5 in the immediately preceding online transaction) is also acquired (step S5).
5). The immediately preceding information terminal device-side transaction sequence and the latest transaction management center device-side transaction sequence are passed from the transaction sequence management unit 41 to the certificate ID assignment processing unit 40.
Then, the certificate ID assignment processing unit 40 generates a certificate ID using the immediately preceding information terminal device-side transaction sequence, the latest transaction management center device-side transaction sequence, and the transaction content information acquired from the transaction management unit 32. (Step S5
7). This certificate ID generation process is a process of generating a message digest of transaction content information using, for example, the immediately preceding information terminal device-side transaction sequence and the latest transaction management center device-side transaction sequence as keys. The generated certificate ID is passed to the transaction management unit 32.

The transaction management unit 32 generates transaction statement data including the new information terminal device-side transaction sequence generated in step S51 and the certificate ID, and stores the transaction content storage processing unit 36.
Is stored in the transaction content storage unit 37 via the step S5 (step S5).
9).

If the transaction statement data can be generated in this way, the certificate can be printed. Therefore, a certificate can be issued even in the case of off-line, thereby facilitating transactions and improving customer service.
Further, since the certificate ID is generated using the two transaction sequences, the reliability of the certificate is improved.

Next, information transmission processing (FIG. 4: step S1)
The processing flow of 1) will be described with reference to FIG. The transaction management unit 32 reads out the untransmitted transaction statement data stored in the transaction content storage unit 37 via the transaction content storage processing unit 36, and transmits it to the transaction management center device 5 from the communication processing unit 31 (step S61). ). The transaction content storage processing unit 36 reads out the untransmitted transaction statement data,
In some cases, a process of deleting the untransmitted transaction statement data in the transaction content storage unit 37 is performed. This is because if the transaction statement data is left in the information terminal device 3, it may be misused. In some cases, only the transaction content information is stored in the transaction content storage unit 37 without generating a certificate ID.

In the transaction management center device 5 which has received the transaction statement data, verification processing of the certificate ID and registration of transaction statement data are performed. And the transaction management center device 5
Is the transaction sequence (if there is only one transaction sequence (first case), the transaction sequence itself.
When two transaction sequences are used (second example), the transaction sequence is on the transaction management center device side. ) And time information are transmitted to the information terminal device 3. Therefore, the communication processing unit 31 of the information terminal device 3 receives the transaction sequence and the time information from the transaction management center device 5 (Step S63). Note that the transaction management center device 5 may transmit the transaction statement data as shown in FIG. 7 as it is. However, in this case, the transaction sequence is changed to the transaction sequence generated on the transaction management center device side, and the transaction time is changed to the time of the transaction management center device 5 or transmitted to the information terminal device 3 with the current time information separately added. In some cases.

Then, the transaction management unit 32 that has received the information received from the communication processing unit 31
The received transaction sequence (the transaction sequence itself in the case of the first example; the transaction sequence on the transaction management center device side in the case of the second example) is passed to the transaction sequence management unit 41 via the “0”. Then, the transaction sequence management unit 41 updates the transaction sequence stored in the transaction sequence storage unit 42 with the received transaction sequence (Step S65). In the case of the first example, the received transaction sequence is the latest transaction sequence. In the case of the second example, the latest transaction management center device-side transaction sequence is updated to the received transaction management center device-side transaction sequence. Then, the transaction management unit 32 updates the time of the information terminal device 3 using the received time information (Step S).
67). Thereby, the time with the transaction management center device 5 is synchronized.

In this way, even if communication with the transaction management center device 5 cannot be performed when the certificate creation instruction is received, the transaction detail data of the certificate can be registered in the transaction management center device 5. become able to.

In the processing flow of FIG. 4, once it is determined that communication is not possible even if a certificate creation instruction is received, it is stored in the transaction content storage unit 37 until the next certificate creation instruction is received and communication is determined. The untransmitted transaction statement data is not transmitted. Therefore, by performing the processing flow as shown in FIG. 13 periodically or irregularly, and further in real time from start to finish, together with the processing flow of FIG. 4, without depending on the operation of the operator of the information terminal device 3, Send unsent transaction data. That is, for example, the communication processing unit 31 periodically or irregularly checks whether communication with the transaction management center device 5 is possible (step S71). If communication is not possible, the process is suspended until the next confirmation time. On the other hand, if it is determined that communication is possible, the transaction management unit 32 checks whether information to be transmitted (untransmitted transaction statement data) exists in the transaction content storage unit 37 (step S73). If there is no unsent transaction statement data, the process is terminated.
Note that step S73 may not be performed at this point, but may be performed before step S71.
That is, it is confirmed whether communication with the transaction management center device 5 is possible only when unsent transaction data exists. If there is transaction statement data to be transmitted, an information transmission process (FIG. 12) is performed (step S75).
Then, the process ends.

Next, the operation of the transaction management center device 5 will be described with reference to FIGS. First, the main processing flow of the transaction management center device 5 will be described with reference to FIG. First, the communication processing unit 51 of the transaction management center device 5 receives the transaction statement data from the information terminal device 3 (step S8).
1). The transaction management unit 52 of the transaction management center device 5
Checks whether the received transaction statement data includes the certificate ID (step S83). If the certificate ID is included in the transaction details data,
A registration process is performed (step S85). This processing will be described later in detail. On the other hand, when the certificate ID is not included in the transaction details data, the certificate ID generation / registration processing is performed (step S87). This processing will be described later in detail. Such processing is performed each time the transaction statement data is received from the information terminal device 3.

Next, a first example of the certificate ID generation / registration processing (step S87) will be described with reference to FIG. The first example is an example in which there is only one transaction sequence. The transaction sequence management unit 54 of the transaction management center device 5 generates a new transaction sequence, and registers the new transaction sequence together with the terminal ID of the information terminal device 3 in the transaction sequence storage unit 55 of the transaction management center device 5. (Step S91). Then, the certificate ID assignment verification processing unit 53
Generates a certificate ID using the generated new transaction sequence and transaction statement data (step S93). The certificate ID generation process is the same as the process performed in the transaction sequence management unit 54 of the information terminal device 3, and is, for example, a process of creating a message digest of transaction details data using the transaction sequence as a key.

Next, the time management section 58 has a time signal synchronous clock 59.
Is obtained from (step S95). And
The transaction content storage processing unit 56 registers the transaction details data including the new transaction sequence and the certificate ID together with the current time information acquired from the time management unit 58 in the transaction content storage unit 57 of the transaction management center device 5 (step S97). And
The transaction management unit 52 controls the communication processing unit 51 to transmit the new transaction sequence, the certificate ID, and the current time information to the information terminal device 3 (Step S99). Note that the communication processing unit 51 of the transaction management center device 5 may transmit the transaction statement data as shown in FIG. 7 as it is. However, in this case, the transaction sequence is changed to the transaction sequence generated on the transaction management center device side, and the transaction time is changed to the time of the transaction management center device 5 or transmitted to the information terminal device 3 with the current time information separately added. In some cases.

In this way, the certificate ID is generated in the transaction management center device 5 and registered with the transaction content information. Therefore, when a certificate including the certificate ID is presented later, it can be surely verified that the certificate is genuine.

Next, a second example of the certificate ID generation / registration processing (step S87) will be described with reference to FIG. The second example uses an information terminal device-side transaction sequence and a transaction management center device-side transaction sequence. The transaction sequence management unit 54 of the transaction management center device 5 generates a new transaction management center device-side transaction sequence (step S1).
01). The generation of the new transaction management center device-side transaction sequence is, for example, a process of generating one of consecutive numbers each time transaction details data is received. Then, the transaction sequence management unit 54 receives the information terminal device-side transaction sequence and the terminal ID included in the transaction statement data from the transaction management unit 52, and stores the transaction sequence together with the new transaction management center device-side transaction sequence generated in step S101. Registered in the section 55 (step S103).

The certificate ID assignment verification processing unit 53 uses the new transaction management center device-side transaction sequence generated by the transaction sequence management unit 54 and the transaction detail data including the information terminal device-side transaction sequence to execute the certificate ID. Is generated (step S105). This certificate ID generation processing is performed by, for example, using the information terminal device-side transaction sequence and the transaction management center device-side transaction sequence as keys, and using This is a process for generating a message digest.

Then, the time management unit 58 stores the broadcast synchronous clock 5
9, the current time is obtained (step S107). Then, the transaction content storage processing unit 56 stores the transaction detail data including the transaction management center device-side transaction sequence and the certificate ID instead of the information terminal device-side transaction sequence in the time management unit 58.
Is registered in the transaction content storage unit 57 together with the current time obtained from (step S109). And the transaction management unit 5
2 controls the communication processing unit 51 to transmit the transaction sequence on the transaction management center device side, the certificate ID and the current time to the information terminal device 3 (step S111). Note that the communication processing unit 51 of the transaction management center device 5 may transmit the transaction statement data as shown in FIG. 7 as it is. However, in this case, the transaction sequence is a transaction sequence of the transaction management center device side, and the transaction time may be changed to the time of the transaction management center device 5 or transmitted to the information terminal device 3 in a form in which current time information is separately added. .

In this manner, the certificate ID is generated in the transaction management center device 5 and registered together with the transaction content information. Therefore, when a certificate including the certificate ID is presented later, it can be surely verified that the certificate is genuine. Further, since two transaction sequences are used, higher reliability can be given to the certificate.

Next, a first example of the certificate ID confirmation / registration processing (FIG. 14: step S85) will be described with reference to FIG.
The first example is an example in which one transaction sequence is used. First, the transaction sequence management unit 54 checks whether the transaction sequence included in the transaction statement data received by the communication processing unit 51 is genuine (Step S12).
1). For example, when the information terminal device 3 generates the certificate ID, the transaction sequence held by the information terminal device 3 is used as it is to generate the certificate ID. Of the transaction sequence and the terminal ID included in the transaction sequence storage 55
Check if it is stored in. If it is determined that the transaction sequence is not a genuine transaction sequence (if there is no pair of the transaction sequence and the terminal ID), the transaction management unit 52 sets warning data corresponding to the transaction detail data (for example, sets a warning flag). Turn on) and the transaction management center device 5
A warning is issued to the administrator (step S129). In some cases, processing such as displaying the transaction statement data to the administrator may be performed.

On the other hand, if it is determined that the transaction sequence is genuine, the certificate ID assignment verification processing unit 53 removes at least the certificate ID and the transaction sequence from the transaction sequence and the transaction statement data included in the transaction statement data. A certificate ID is generated using the transaction content information as data (step S125). The process of generating the certificate ID is the same as that described above. Then, the certificate ID assignment verification processing unit 53 executes the certificate ID included in the received transaction statement data.
Then, it is determined whether the certificate ID generated in step S125 matches (step S127). If it is determined that they do not match, there is a possibility that fraud has been performed, so the flow shifts to step S129. On the other hand, if it is determined that they match, it is determined that there is no fraud.

Certificate I received in step S127
D and generated certificate ID match and step S
129, the time management unit 58 acquires the current time from the time signal synchronization clock 59 (step S13).
1). Then, the transaction content storage processing section 56 registers the received transaction statement data in the transaction content storage section 57 together with the current time information acquired from the time management section 58 (Step S).
133). When the process of step S129 is performed, warning data is also stored in the transaction content storage processing unit 56 so that problematic transaction details data can be easily detected in a later analysis process or the like. .

Then, the transaction sequence management unit 54 generates a new transaction sequence, and
It is registered in the transaction sequence storage unit 55 together with D (step S135). Then, the transaction management unit 52 controls the communication processing unit 51 to transmit the current time information and the new transaction sequence to the information terminal device 3 (Step S137).
Note that the communication processing unit 51 of the transaction management center device 5
In some cases, the transaction statement data as shown in FIG. However, in this case, the transaction sequence is a new transaction sequence, and the transaction time may be transmitted to the information terminal device 3 with the transaction time changed to the time of the transaction management center device 5 or the current time information added separately.

By performing such processing, it is possible to verify the transaction sequence used in the information terminal device 3 and the generated certificate ID to confirm whether there is any fraud. In addition, the new transaction sequence can be returned to the information terminal device 3 to synchronize with the transaction management center device 5. Similarly, the current time information is also transmitted to the information terminal device 3, so that synchronization with the transaction management center device 5 can be achieved. As a result, it is possible to prevent fraudulent acts such as falsifying the date and time.

Next, a second example of the certificate ID confirmation / registration processing (FIG. 14: step S85) will be described with reference to FIG.
The second example shows an example in which two transaction sequences are used. First, the transaction sequence management unit 54 generates a new transaction management center device-side transaction sequence with reference to the previous transaction management center device-side transaction sequence stored in the transaction sequence storage unit 55 (step S141).
For example, the next number after the serial number is generated. Then, the transaction sequence management unit 54 registers the information terminal device-side transaction sequence and the terminal ID included in the transaction statement data, the newly generated transaction management center device-side transaction sequence, and the offline flag in the transaction sequence storage unit 55. (Step S143).

Further, the transaction sequence management unit 54 uses the information terminal device-side transaction sequence and the transaction management center device-side transaction sequence used when generating the certificate ID from the information terminal device-side transaction sequence included in the transaction statement data. Is determined with reference to the transaction sequence storage unit 55 (step S145). This processing will be described later using a specific example.

Then, the certificate ID assignment verification processing unit 53
A certificate ID is generated using the transaction sequence on the usage information terminal device side and the transaction sequence on the usage transaction management center device, and the transaction details data that is at least the transaction ID data and the portion excluding the transaction sequence on the information terminal device side. (Step S147). The processing for generating the certificate ID is the same as described above. Certificate ID
The grant verification processing unit 53 determines whether the certificate ID included in the transaction statement data matches the certificate ID generated in step S147 (step S149). If they do not match, there is a possibility that the transaction has been fraudulent, so the transaction management unit 52 sets warning data (for example, turns on a warning flag) corresponding to the transaction detail data, and the transaction management center device. Issue a warning to the administrator of step 5 (step S
151). In some cases, processing such as displaying the transaction statement data to the administrator may be performed.

Certificate I received in step S149
D and generated certificate ID match and step S
151, the time management unit 58 acquires the current time from the time signal synchronization clock 59 (step S15).
3). Then, the transaction content storage processing unit 56 registers the received transaction statement data in the transaction content storage unit 57 together with the current time information acquired from the time management unit 58 (step S1).
55). At this time, the new transaction management center device-side transaction sequence generated in step S141 may be registered together. When the process of step S129 is performed, warning data is also stored in the transaction content storage processing unit 56 so that problematic transaction details data can be easily detected in later analysis processing or the like. .

Then, the transaction management unit 52
1 to transmit the current time information and the new transaction management center device side transaction sequence to the information terminal device 3 (step S157). Note that the communication processing unit 51 of the transaction management center device 5 may transmit the transaction statement data as shown in FIG. 7 as it is. However, in this case, the transaction sequence is a new transaction sequence, and the transaction time may be transmitted to the information terminal device 3 with the transaction time changed to the time of the transaction management center device 5 or the current time information added separately.

By performing such processing, it is possible to verify the certificate ID generated in the information terminal device 3 and to confirm whether there is any fraud. However, since two transaction sequences are used, it is difficult to perform fraud. Further, the new transaction management center device side transaction sequence can be returned to the information terminal device 3 to synchronize with the transaction management center device 5. Similarly, the current time information is also transmitted to the information terminal device 3, so that synchronization with the transaction management center device 5 can be achieved. This makes it possible to prevent the date and time from being falsified.

(Specific Example of Transaction Sequence Management) Next, a specific example of transaction sequence management will be described. It is assumed that the information terminal device 3 has two information terminal devices whose terminal IDs are x and y. (1) The information terminal device x receives the certificate ID online. (2) The information terminal device y receives the certificate ID online. (3) The information terminal device x generates the certificate ID offline. (4)
The information terminal device x generates the certificate ID again off-line. (5) The information terminal device x receives the certificate ID online. (6) The information terminal device x transmits the certificate ID and the like generated in (3) to the transaction management center device.
(7) The information terminal device x transmits the certificate ID and the like generated in (4) to the transaction management center device. (8) The information terminal device x receives the certificate ID online. The transition of the transaction sequence when processing is performed in this order will be described.

(Case of First Example) FIG. 19 shows transition of a transaction sequence in the case of the first example. However, for the information terminal device 3, only the transition of the transaction sequence of the information terminal device x is shown. The information terminal device 3 does not transmit the transaction sequence to the transaction management center device 5. Therefore, in the case of (1), the transaction sequence storage unit 55 of the transaction management center device 5 stores the information terminal device ID x and the transaction sequence i generated by the transaction sequence management unit 54. The transaction sequence i and the certificate ID generated using the transaction sequence i are transmitted to the information terminal device x. The transaction sequence management unit 41 of the information terminal device x stores the transaction sequence i in the transaction sequence storage unit.

Next, in the case of (2), the transaction management center device 5
In the transaction sequence storage unit 55, the information terminal device ID y and the transaction sequence i + 1 generated by the transaction sequence management unit 54 are stored. This transaction sequence i +
1 and the certificate ID generated using the transaction sequence i + 1 are transmitted to the information terminal device y. Information terminal device y
The transaction sequence management unit 41 of the transaction sequence storage unit 4
2 stores the transaction sequence i + 1.

In the case of (3), the information terminal device x generates a certificate ID using the transaction sequence i received in (1). However, any transaction sequence may be generated using the transaction sequence i. In the case of (4), the information terminal device uses the transaction sequence i received in (1) to
Generate D. Although the transaction sequence i is used in (3), at least the transaction time is different, so that the generated certificate ID is different from that in (3).

In the case of (5), the information terminal device 3 does not transmit the transaction sequence or the certificate ID, and the transaction sequence storage unit 55 of the transaction management center device 5 stores the information terminal device ID x and the transaction sequence management unit. The transaction sequence i + 2 generated by 54 is stored. This transaction sequence i + 2
And the certificate ID generated using the transaction sequence i + 2 is transmitted to the information terminal device x. The transaction sequence management unit 41 of the information terminal device x includes a transaction sequence storage unit 42
Is stored in the transaction sequence i + 2.

In the case of (6), the information terminal device x uses the certificate ID
And the used transaction sequence i are transmitted to the transaction management center device 5. Therefore, the transaction sequence management unit 54 of the transaction management center device 5 searches the transaction sequence storage unit 55 for a pair of the used transaction sequence i and the terminal ID x. If it does not exist, there is a possibility that an illegal operation has been performed, so warning data is set. Further, the certificate ID assignment verification processing unit 53 generates a certificate ID using the received used transaction sequence i and the transaction content information, and checks whether the received certificate ID matches the generated certificate ID. If they do not match, there is a possibility that an illegal operation has been performed, so warning data is set. Then, the transaction sequence management unit 54 generates the next transaction sequence i + 3, and stores the transaction sequence i + 3 and the terminal ID x of the information terminal device x in the transaction sequence storage unit 55. This transaction sequence i + 3 is transmitted to the information terminal device x. The transaction sequence management unit 41 of the information terminal device x stores the transaction sequence i + 3 in the transaction sequence storage unit 42.
Is stored.

In the case of (7), the information terminal device x uses the certificate ID
And the used transaction sequence i are transmitted to the transaction management center device 5. Therefore, the transaction sequence management unit 54 of the transaction management center device 5 searches the transaction sequence storage unit 55 for a pair of the used transaction sequence i and the terminal ID x. If it does not exist, there is a possibility that an illegal operation has been performed, so warning data is set. Further, the certificate ID assignment verification processing unit 53 generates a certificate ID using the received used transaction sequence i and the transaction content information, and checks whether the received certificate ID matches the generated certificate ID. If they do not match, there is a possibility that an illegal operation has been performed, so warning data is set. Then, the transaction sequence management unit 54 generates i + 4 as the next transaction sequence, and stores the transaction sequence i + 4 and the terminal ID x of the information terminal device x in the transaction sequence storage unit 55. This transaction sequence i + 4 is transmitted to the information terminal device x. The transaction sequence management unit 41 of the information terminal device x stores the transaction sequence i + 4 in the transaction sequence storage unit 42.
Is stored.

In the case of (8), since it is online, the transaction sequence storage unit 55 of the transaction management center device 5 stores the information terminal device ID x and the transaction sequence i + 5 generated by the transaction sequence management unit 54. . The transaction sequence i + 5 and the certificate ID generated using the transaction sequence i + 5 are transmitted to the information terminal device x.
The transaction sequence management unit 41 of the information terminal device x stores the transaction sequence i + 5 in the transaction sequence storage unit.

(Case of Second Example) FIG. 20 illustrates the transition of the transaction sequence in the case of the second example. However, for the information terminal device 3, only the transition of the transaction sequence of the information terminal device x is shown. The information terminal device 3 transmits the information terminal device-side transaction sequence to the transaction management center device 5.
Therefore, in the case of (1), the transaction sequence management unit 41 of the information terminal device x generates the information terminal device-side transaction sequence n and registers it in the transaction sequence storage unit 55. This information terminal device-side transaction sequence n is transmitted to the transaction management center device 5. The transaction sequence management unit 54 of the transaction management center device 5 sets a new transaction management center device side transaction sequence i.
Is generated, and the new transaction management center device side transaction sequence i, the information terminal device ID x, and the received information terminal device side transaction sequence n are registered in the transaction sequence storage unit 55. Note that the offline flag corresponding to the information terminal device x is not turned on because it is an online process. The certificate ID assignment verification processing unit 53 of the transaction management center device 5 receives the information terminal device-side transaction sequence n
Then, the certificate ID is generated using the generated transaction sequence i and the transaction content information. The transaction sequence used to generate the certificate ID is shown in the columns of the transaction sequence of the used transaction management center device and the transaction sequence of the used information terminal device. Transaction management center device 5
Transmits the certificate ID and the generated transaction sequence on the transaction management center device side to the information terminal device x. The transaction sequence i on the transaction management center device side is
Registered in 2.

In the case of (2), the transaction sequence management section 41 of the information terminal device y checks the information terminal device side transaction sequence m
Is generated and registered in the transaction sequence storage unit 55 (not shown). The information terminal device side transaction sequence m is transmitted to the transaction management center device 5. The transaction sequence management unit 54 of the transaction management center device 5 generates a new transaction management center device side transaction sequence i + 1, and the new transaction management center device side transaction sequence i + 1 and the information terminal device I
The y that is D and the received information terminal device-side transaction sequence m are registered in the transaction sequence storage unit 55. Note that the offline flag corresponding to the information terminal device y is not turned on because it is an online process. The certificate ID assignment verification processing unit 53 of the transaction management center device 5 generates a certificate ID using the received information terminal device-side transaction sequence m, the generated transaction management center device-side transaction sequence i + 1, and the transaction content information. The transaction management center device 5 uses the certificate I
D and the generated transaction sequence at the transaction management center device side i +
1 to the information terminal device y. The transaction management center device side transaction sequence i + 1 is a transaction sequence management unit 42
Registered in.

In the case of (3), the transaction sequence management unit 41 of the information terminal device x generates a new information terminal device-side transaction sequence n + 1 and stores it in the transaction sequence storage unit 42. Further, the certificate ID assignment processing unit 40 refers to the transaction sequence storage unit 42, extracts the immediately preceding information terminal device-side transaction sequence n and the latest transaction management center device-side transaction sequence i, and retrieves the information terminal device-side transaction sequence. The certificate ID is generated using the transaction sequence i and the transaction sequence information i and the transaction content information.

In the case of (4), the transaction sequence management unit 41 of the information terminal device x generates a new information terminal device-side transaction sequence n + 2 and stores it in the transaction sequence storage unit 42. Further, the certificate ID assignment processing unit 40 refers to the transaction sequence storage unit 42, extracts the immediately preceding information terminal device-side transaction sequence n + 1 and the latest transaction management center device-side transaction sequence i, and extracts the information terminal device-side transaction sequence. n + 1 and transaction sequence i on the transaction management center device side
A certificate ID is generated using the transaction content information.

In the case of (5), the transaction sequence management unit 41 of the information terminal device x generates the next information terminal device-side transaction sequence n + 3 and registers it in the transaction sequence storage unit 55. The information terminal device-side transaction sequence n + 3 is transmitted to the transaction management center device 5. The transaction sequence management unit 54 of the transaction management center device 5 generates a new transaction management center device side transaction sequence i + 2, and the new transaction management center device side transaction sequence i + 2 and the information terminal device I
The X that is D and the received information terminal device-side transaction sequence n + 3 are registered in the transaction sequence storage unit 55. Note that the offline flag corresponding to the information terminal device x is not turned on because it is an online process. The certificate ID assignment verification processing unit 53 of the transaction management center device 5 generates a certificate ID using the received information terminal device-side transaction sequence n + 3, the generated transaction management center device-side transaction sequence i + 2, and the transaction content information. The transaction sequence used to generate the certificate ID is shown in the columns of the transaction sequence of the used transaction management center device and the transaction sequence of the used information terminal device. The transaction management center device 5 uses the certificate I
D and the generated transaction sequence at the transaction management center device side i +
2 is transmitted to the information terminal device x. The transaction sequence at the transaction management center device side i + 2 is
Registered in.

In the case of (6), the transaction management unit 32 of the information terminal device x transmits the information terminal device-side transaction sequence n + 1 and the certificate ID generated in (3) from the transaction content storage unit 37.
Is transmitted to the transaction management center device 5 via the communication processing unit 31. The transaction management unit 52 of the transaction management center device 5 detects that the certificate ID has been generated offline by receiving the certificate ID.
The transaction sequence management unit 54 generates a new transaction management center device side transaction sequence i + 3, and the new transaction management center device side transaction sequence i + 3, the information terminal device ID x, and the received information terminal device side transaction The sequence n + 1 is registered in the transaction sequence storage unit 55. Note that the off-line flag corresponding to the information terminal device x is turned on because the off-line certificate ID is generated (in the figure, ○ is indicated). Transaction sequence management unit 54
Is stored in the transaction sequence storage unit 55 using the received information terminal device-side transaction sequence n + 1 and the terminal ID x.
To obtain the information terminal device-side transaction sequence n immediately before n + 1 and the corresponding transaction management center device-side transaction sequence i. A certificate ID is generated using the information terminal device-side transaction sequence n and the transaction management center device-side transaction sequence i, and is compared with the received certificate ID to perform a certificate ID verification process. The new transaction management center device-side transaction sequence i + 3 generated is returned to the information terminal device x. Transaction sequence management unit 41 of information terminal device x
Updates the latest transaction management center device side transaction sequence in the transaction sequence storage 42 to i + 3.

In the case of (7), the transaction management unit 32 of the information terminal device x sends the information terminal device-side transaction sequence n + 2 and the certificate ID generated in (4) from the transaction content storage unit 37.
Is transmitted to the transaction management center device 5 via the communication processing unit 31. The transaction management unit 52 of the transaction management center device 5 detects that the certificate ID has been generated offline by receiving the certificate ID.
The transaction sequence management unit 54 generates a new transaction management center device-side transaction sequence i + 4, the new transaction management center device-side transaction sequence i + 4, the information terminal device ID x, and the received information terminal device-side transaction The sequence n + 2 is registered in the transaction sequence storage unit 55. Note that the off-line flag corresponding to the information terminal device x is turned on because the off-line certificate ID is generated (in the figure, ○ is indicated). Transaction sequence management unit 54
Uses the received information terminal device-side transaction sequence n + 2 and the terminal ID x as a transaction sequence storage 55
To obtain the information terminal device-side transaction sequence n + 1 immediately before n + 2. However, since the offline flag is registered corresponding to the information terminal device-side transaction sequence n + 1, the terminal ID x and the previous information terminal device-side transaction sequence n are further searched. Then, since the off-line flag is not set corresponding to the information terminal device-side transaction sequence n, the transaction management center device-side transaction sequence i corresponding to this is acquired. A certificate ID is generated using the information terminal device-side transaction sequence n + 1 and the transaction management center device-side transaction sequence i, and the received certificate ID is received.
The verification process of the certificate ID is performed in comparison with the above. The generated new transaction management center device side transaction sequence i + 4 is
The information is returned to the information terminal device x. The transaction sequence management unit 41 of the information terminal device x updates the latest transaction management center device side transaction sequence in the transaction sequence storage unit 42 to i + 4.

In the case of (8), the transaction sequence management section 41 of the information terminal device x sets the information terminal device-side transaction sequence n
+4 is generated and registered in the transaction sequence storage unit 55.
The information terminal device side transaction sequence n + 4 is transmitted to the transaction management center device 5. The transaction sequence management unit 54 of the transaction management center device 5 generates a new transaction management center device-side transaction sequence i + 5, and receives the new transaction management center device-side transaction sequence i + 5, the information terminal device ID x, and Information terminal device side transaction sequence n +
4 is registered in the transaction sequence storage unit 55. Note that the offline flag corresponding to the information terminal device x is not turned on because it is an online process. The certificate ID assignment verification processing unit 53 of the transaction management center device 5 generates a certificate ID using the received information terminal device-side transaction sequence n + 4, the generated transaction management center device-side transaction sequence i + 5, and the transaction content information. The transaction sequence used to generate the certificate ID is shown in the columns of the transaction sequence of the used transaction management center device and the transaction sequence of the used information terminal device. The transaction management center device 5 transmits the certificate ID and the generated transaction management center device-side transaction sequence i + 5 to the information terminal device x. The transaction sequence i + 5 on the transaction management center device side is stored in the transaction sequence storage unit 42.

In the above, an example has been shown in which the information terminal device-side transaction sequence generated in the previous transaction is used as the use information terminal device-side transaction sequence in the generation of the certificate ID when the device is offline. It is possible. For example, the use information terminal device-side transaction sequence n in the immediately preceding online transaction can be used for all offline transactions until the next online transaction. Also, in (3), n + 1 is
In (4), it is also possible to use n + 2 as the transaction sequence on the use information terminal device side.

As described in the first embodiment of the present invention, since the certificate ID generated using the transaction sequence is used, a highly reliable certificate can be created. By using the certificate ID and other information, it is possible to detect that the fraud has been performed. Further, the transaction content information input in the information terminal device 3 is transferred to the transaction management center device 5.
Because it can be registered in the office, administrative efficiency has also been improved. Further, even when communication between the portable terminal device and the transaction management center device is not possible, a certificate having the same reliability as in the case where communication is possible can be issued.

[Second Embodiment] In the second embodiment, FIG.
This is an embodiment in which an electronic payment function is added to the system of FIG. FIG. 21 shows the system configuration. Network 1
Has a plurality of information terminal devices 3 (information terminal devices A (3
a),. . . . The information terminal device N (3n)) and the information distribution device 7 are connected. As in FIG. 1, the connection between the information terminal device 3 and the network 1 may be wired or wireless. The information terminal device 3 in FIG. 21 is the information terminal device having the configuration shown in FIG. Information distribution device 7
, The transaction management center device 5 and the electronic settlement center group 9 are connected. Transaction management center device 5 in FIG.
Is a transaction center device having the configuration shown in FIG. The electronic settlement center group 9 performs processing for debit settlement if it is an electronic settlement center that performs debit settlement, for example. If it is an electronic settlement center that performs a credit card settlement, the processing for the credit card settlement is performed. The processing of the electronic settlement center group 9 is the same as that of the related art, and the processing is performed according to a procedure determined for settlement, and will not be described further.

The main processing flow (in the case of debit payment) of the information terminal device 3 will be described with reference to FIG. The operator of the information terminal device 3 operates the input device 35 to input the transaction content information.
Accepts transaction content information input via
01). Then, the communication processing unit 31 determines whether communication with the transaction management center device 5 is possible (step S203). If communication is possible, the transaction management unit 32 determines whether card reading processing of the debit card using the card reader 43 has been executed (step S205). In the case of a debit card, input of a password is also performed by the input device 35. If the card reading process has been executed, the transaction management unit 32 generates electronic payment data (step S207). The electronic payment data will be described later.

When the card reading process is not executed in step S205 and after the electronic payment data is generated in step S207, the transaction management unit 32 clears the online transaction amount and the number of continuous offline transactions (step S209). The meaning of the off-line transaction amount and the number of continuous off-line times is the same as in the first embodiment. Thereafter, if the electronic payment data is generated (step S211: Yes route), a certificate ID acquisition / electronic payment data transmission process is performed (step S215). FIG.
9 shows a format of data transmitted to the transaction management center device 5 in step S215. This data includes a certificate data section and an electronic payment data section. The certificate data section is the same as that of FIG. 9 and includes a terminal ID, a transaction sequence (transaction sequence on the information terminal device side), a transaction date, a transaction time, a transaction amount, an issuer name, an issuer name, and additional information. The electronic payment data section includes a terminal ID, an account ID (information of a bank account), an authentication ID (for example, a password), a transaction date, a transaction time, a transaction amount, and additional information. In addition,
The transaction sequence in the certificate data section will be empty in the case of the first example where only one transaction sequence is used in the system. Processing other than the data to be transmitted is the same as in FIG. 5 or FIG.

If the electronic payment data has not been generated (step S211: No route), a certificate ID acquisition process is performed (step S213). Step S2
13 is the same as FIG. 5 or FIG. Then, the transaction management unit 32 determines whether there is other information to be transmitted (step S9). The other information to be transmitted is, for example, a transaction content when a certificate creation instruction is received but communication with the transaction management center device 3 is not possible, and the information terminal device 3 generates a certificate ID and issues a certificate. It is transaction statement data stored in the storage unit 37. The transaction management processing unit 32 confirms whether there is transaction statement data that has not been transmitted to the transaction content storage unit 37 via the transaction content storage processing unit 36. If there is untransmitted transaction statement data, an information transmission process is performed (step S219). Then, a certificate is printed using the acquired certificate ID and transaction content information (step S221).

Note that FIG. 22 shows a case where the settlement can be made in the electronic settlement center group 9. If the settlement is not possible, the transaction management unit 32 of the information processing terminal 3 sets the display device 3.
4 indicates that settlement is not possible, and separately collects the transaction price. If the transaction price cannot be separately collected, a process such as cancellation of the transaction is performed.

On the other hand, if the communication control unit 31 determines that communication with the transaction management center device 5 is not possible, debit settlement is not possible, and the transaction management unit 32
Then, a card read disable display is performed on the display device 34 via the terminal 3 (step S223). And the transaction management unit 32
It is determined whether a certificate creation instruction has been received by the input device 35 (step S225). If the certificate creation instruction has not been received, the transaction content information is temporarily stored in the transaction content storage unit 37 via, for example, the transaction content storage processing unit 36 (step S241). On the other hand, if the certificate creation instruction has been received, the transaction management unit 32 determines whether the clock of the information terminal device 3 has been manually changed (Step S).
227). In the case where the information terminal device 3 is offline and the clock of the information terminal device 3 is manually changed, the operator of the information terminal device 3 may be trying to perform wrongdoing. Therefore, confirmation is performed in step S227 to prevent fraud. If the clock has been manually changed,
A display device 34 via the input / output control unit 33 indicates that the transaction cannot be performed.
(Step S239).

If the clock has not been manually changed, the transaction management unit 31 determines whether or not the total of the offline transaction amounts is less than a specified value (step S229). This is because it is highly possible that fraud is performed when the user is offline, and the amount of the transaction related to fraud does not increase. If the total amount of the off-line transaction amount is equal to or more than the specified value, a transaction refusal is displayed on the display device 34 via the input / output control unit 33 (step S239). On the other hand, if the total of the offline transaction amounts is less than the specified value, the offline transaction amount is increased by the current transaction amount (step S231).

Then, transaction management unit 31 determines whether or not the number of continuous offline operations is less than a specified value (step S23).
3). This is because it is highly possible that fraud is performed when the user is offline, and the number of fraudulent transactions is not increased. If the number of continuous offlines is equal to or more than the specified value, the transaction disable is displayed on the display device 34 via the input / output control unit 33 (step S239). On the other hand, if the continuous offline count is less than the specified value, the continuous offline count is incremented by one (step S235). Then, a certificate ID generation process is performed (step S23).
7). After that, the procedure moves to step S221.

In such a process, the information terminal device 3 can issue a certificate with a certificate ID generated by using the transaction sequence, regardless of whether communication is possible with the transaction management center terminal 5 or not. become. Further, the debit settlement can be performed by the information terminal device 3, and the customer service is improved, and the transaction price can be reliably collected from the customer, and the date and time of the transaction price collection can be reliably recorded. For example, if the additional information in the certificate data part of FIG. 23 includes information such as the execution of the debit payment, it is possible to easily associate the information with the payment information. Although not shown in FIG. 21, the electronic settlement center group 9 and the transaction management center device 5 communicate with each other to transmit settlement information from the electronic settlement center group 9 to the transaction management center device 5,
In some cases, the transaction management center device 5 performs a settlement confirmation process.

The processing flow of the information distribution device 7, the transaction management center device 5, and the electronic settlement center group 9 of FIG. 21 will be briefly described with reference to FIG. Upon receiving the transaction statement data from the information terminal device 3, the information distribution apparatus 7 determines whether the transaction statement data includes an electronic payment data section (Step S242). If the electronic payment data section is included, the electronic payment data section is cut out from the transaction statement data and output to the electronic payment center corresponding to the electronic payment data section (step S243). The electronic settlement center performs settlement processing. The payment processing is the same as the prior art and will not be described in further detail.

Further, the information distribution device 7 cuts out the certificate data part from the received transaction statement data and outputs it to the transaction management center device 5 (step S245). The transaction management center device 5 performs the certificate ID generation and registration (FIG. 15 or FIG. 16) as described in the first embodiment.

On the other hand, if the transaction details data does not include the settlement data section, the received transaction details data is output to transaction management center device 5 (step S247). Then, the transaction management center device 5 performs a certificate ID generation / registration process (FIG. 15 or 16) or a certificate ID confirmation / registration process (FIG. 17 or FIG. 18) (step S249). Step S249 means performing FIG.

As described above, in the second embodiment, in addition to the first embodiment, the settlement can be performed by the information terminal device 3, so that the customer service, the reliability of the transaction, and the efficiency of the work can be improved.

The embodiment described above is an example, and various modifications are possible. As for the processing flow, processing can be performed in parallel for each functional block shown in FIGS. 2 and 3, and therefore, some steps are performed in parallel. For example, the process of obtaining the current time and the process of generating a certificate ID can be performed in parallel.

Although the processing flow for prohibiting the transaction when the total of the continuous offline transactions is equal to or more than the specified value is shown in FIGS. 4 and 22, the present invention is not limited to this.
For example, when the processing amount of one offline transaction is equal to or more than a specified value, a processing flow that prohibits the offline transaction may be adopted.

The transaction management center device 5 has a computer
It may be configured to be implemented by a combination of a program and computer hardware. However, the computer hardware may not be implemented by one computer but may be implemented by a plurality of computers.

[0115]

As described above, a more reliable certificate can be issued using the terminal device.

Further, even when communication between the portable terminal device and the transaction management center device is not possible, a certificate having the same reliability as in the case where communication is possible can be issued.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a system according to a first embodiment of the present invention.

FIG. 2 is a functional block diagram of the information terminal device.

FIG. 3 is a functional block diagram of the transaction management center device.

FIG. 4 is a diagram showing a main processing flow in the information terminal device.

FIG. 5 is a diagram showing a processing flow (part 1) of a certificate ID obtaining process.

FIG. 6 is a diagram showing an example (part 1) of transaction statement data.

FIG. 7 is a diagram showing an example (part 2) of transaction statement data.

FIG. 8 is a diagram showing a processing flow (part 2) of a certificate ID acquisition processing.

FIG. 9 is a diagram showing an example (part 3) of transaction statement data.

FIG. 10 is a diagram showing a processing flow (part 1) of a certificate ID generation processing.

FIG. 11 is a diagram depicting a processing flow (No. 2) of a certificate ID generation processing;

FIG. 12 is a diagram illustrating a processing flow of an information transmission processing.

FIG. 13 is a diagram showing a processing flow of automatic transmission processing.

FIG. 14 is a diagram showing a main processing flow in the transaction management center device.

FIG. 15 is a diagram showing a processing flow (part 1) of a certificate ID generation / registration processing.

FIG. 16 is a diagram showing a processing flow (No. 2) of the certificate ID generation / registration processing.

FIG. 17 is a diagram showing a processing flow (part 1) of a certificate ID confirmation / registration processing.

FIG. 18 is a diagram depicting a processing flow (No. 2) of a certificate ID confirmation / registration processing;

FIG. 19 is a diagram showing a specific example (first example) for explaining a transition of a transaction sequence.

FIG. 20 is a diagram showing a specific example (second example) for explaining the transition of the transaction sequence.

FIG. 21 is a system schematic diagram according to Embodiment 2 of the present invention.

FIG. 22 is a diagram showing a main processing flow in the information terminal device 3 in the second embodiment.

FIG. 23 is a schematic diagram showing a transmission data format according to the second embodiment.

FIG. 24 is a diagram showing a processing flow of an information distribution device, a transaction management center device, and an electronic settlement center in the second embodiment.

[Explanation of symbols]

Reference Signs List 1 network 3 information terminal device 5 transaction management center device 7 information distribution device 9 group of electronic settlement centers 31 communication processing unit 32 transaction management unit 33 input / output control unit 34 display device 35 input device 36
Transaction content storage processing unit 37 Transaction content storage unit 38 Print control unit 39
Printer 40 Certificate ID assignment processing unit 41 Transaction sequence management unit 42 Transaction sequence storage unit 51 Communication processing unit 52 Transaction management unit 53 Certificate ID assignment verification processing unit 54 Transaction sequence management unit 55 Transaction sequence storage unit 56 Transaction content storage processing unit 57 Transaction Content storage unit 58 Time management unit 59 Hourly synchronized clock

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 17/60 506 G06F 17/60 506 512 512 H04Q 7/38 H04B 7/26 109S (72) Inventor Takenaka Nobuo 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Tokyo Metropolitan Marine Fire Insurance Co., Ltd. (72) Inventor Junjiro Ogita 2-1-1 Tsurumaki, Tama City, Tokyo Tokio Marine Fire Insurance Co., Ltd. (72) Invention Matsushita Communication Industry Co., Ltd. (72) Inventor Minoru Onishi 4-3-1 Tsunashima Higashi 4-chome, Kohoku-ku, Yokohama, Kanagawa Prefecture (72) Inventor Masaki Kimura 3-3-3 Toyosu, Koto-ku, Tokyo Inside NTT Data Corporation (72) Akiya Masahiro Kawai 3-3-3 Toyosu, Koto-ku, Tokyo Inside NTT Data Corporation (72) Inventor Fumino Kurimori 3-3-3 Toyosu, Totosu, Koto-ku, Tokyo N.K.・ F-term in TT data (reference) 5K067 AA32 BB21 DD17 EE02 EE10 EE16 GG01 GG11 HH22 HH23 HH24

Claims (35)

[Claims] An acquisition means for acquiring certificate identification information generated from data representing transaction content and transaction sequence data for managing the transaction, and at least one of the certificate identification information and data representing the transaction content. Means for outputting a unit. 2. A certificate for generating certificate identification information using data representing the transaction contents and transaction sequence data determined according to a predetermined rule when communication with the center device cannot be established at the time of receiving a certificate creation instruction. Further comprising: identification information generating means; and means for storing, in a storage device, the certificate identification information generated by the certificate identification information generating means, data representing the transaction content, and transaction sequence data corresponding to the transaction. The terminal device according to claim 1, wherein the acquisition unit acquires the certificate identification information from the certificate identification information generation unit. 3. A communication means for transmitting at least data representing the transaction contents to the center device when communication with the center device can be established at the time of receiving a certificate creation instruction, and the certificate identification information from the center device. 3. The terminal device according to claim 1, further comprising: a receiving unit configured to receive the certificate identification information from the receiving unit. 4. 4. When the certificate identification information is generated by the certificate identification information generating means and communication with the center device can be established, the certificate identification information stored in the storage device and the transaction contents are displayed. 3. The terminal device according to claim 2, further comprising means for transmitting data and said transaction sequence data to said center device. 5. A transaction sequence determining means for determining next transaction sequence data to be used from the transaction sequence data held in the terminal device, wherein the certificate identification information generating means includes: 5. The terminal device according to claim 2, wherein certificate identification information is generated using the transaction sequence data to be used next determined by the means. 6. The apparatus further comprising means for receiving the certificate identification information and the latest center apparatus side transaction sequence data from the center apparatus, wherein the certificate identification information generating means comprises: 6. The terminal device according to claim 2, wherein the certificate identification information is generated using data, the immediately preceding terminal device-side transaction sequence data, and the transaction content data. 7. The terminal according to claim 1, further comprising means for causing the display device to display a message indicating that communication is being established even when communication with the center device cannot be established at the time of receiving a certificate creation instruction. apparatus. 8. A time change detecting means for detecting an operation of changing the time information in the terminal device by an operator of the terminal device, and the center is provided when the time change detecting means detects the time information changing operation. The terminal device according to any one of claims 2, 4, 5, and 6, further comprising: a unit configured to stop processing of the certificate identification information generating unit until a process for time synchronization with the device is performed. 9. The method according to claim 9, wherein said certificate identification information generating means includes: a number of times the certificate identification information is generated by said certificate identification information generating means; The processing is stopped when at least one of the sum exceeds a predetermined reference.
9. The terminal device according to any one of 5, 6, or 8. 10. A debit terminal device having the terminal device according to claim 1. 11. A transaction sequence for managing transactions.
Transaction sequence management means for managing data; data representing transaction content from the terminal device;
Receiving means for receiving data, data representing the transaction content, and certificate identification information generated from transaction sequence data determined by a predetermined rule, and storing the received transaction data in a storage device; and the transaction stored in the storage device. The second certificate identification information is generated using the data representing the contents and the transaction sequence data determined by the transaction sequence management means based on the transaction sequence data stored in the storage device, and stored in the storage device. Checking means for checking the obtained certificate identification information with the second certificate identification information; and a warning when the matching means determines that the certificate identification information does not match the second certificate identification information. Means for setting information for the center device. 12. When the receiving means receives data representing the contents of a transaction without the certificate identification information from the terminal device, the transaction sequence management means sets a transaction sequence
Generating certificate identification information generating means for generating certificate identification information using data representing the transaction content and transaction sequence data generated by the transaction sequence management means; and generating the certificate identification information generating means. The center device according to claim 11, further comprising: a transmitting unit configured to transmit the certificate identification information and the transaction sequence data generated by the transaction sequence management unit to the terminal device. 13. When the receiving means receives the data representing the transaction content and the transaction data on the terminal device side without the certificate identification information from the terminal device, the transaction sequence management means performs the transaction processing on the center device side. Certificate generating means for generating data, generating certificate identification information using the data representing the transaction content, the terminal device-side transaction sequence data, and the center device-side transaction sequence data; and the certificate identification 12. The center apparatus according to claim 11, further comprising: transmitting means for transmitting the certificate identification information generated by the information generating means and the center apparatus-side transaction sequence data generated by the transaction sequence managing means to the terminal device. 14. The terminal device-side transaction determined by the transaction sequence management means based on the data representing the transaction content stored in the storage device and the transaction sequence data stored in the storage device. Generating second certificate identification information using the sequence data and the center device side transaction sequence data, and comparing the certificate identification information stored in the storage device with the second certificate identification information; 14. The center device according to claim 11, wherein: 15. The center device according to claim 11, further comprising: a unit for acquiring a time at which the data representing the transaction content is received from the terminal device and storing the time in a storage device. 16. The center device according to claim 15, further comprising means for transmitting the acquired time information to said terminal device. 17. A communication device comprising a terminal device and a center device, wherein when the terminal device cannot establish communication with the center device at the time of receiving a certificate creation instruction, the terminal device is determined by data representing transaction contents and a predetermined rule. Certificate identification information generating means for generating certificate identification information using transaction sequence data, and the certificate identification information generated by the certificate identification information generating means, data representing the transaction content, and the certificate identification information generating means Means for storing the used transaction sequence data in a storage device; means for outputting the certificate identification information generated by the certificate identification information generating means and at least a part of the data representing the transaction content; and the certificate If the communication with the center device can be established after the certificate identification information is generated by the identification information generation means, the certificate information is stored in the storage device. Transmitting means for transmitting the certificate identification information, the data representing the transaction content, and the transaction sequence data to the center device, wherein the center device manages the transaction sequence data in the center device. Transaction sequence management means, receiving means for receiving the data representing the transaction content, the transaction sequence data, and the certificate identification information from the terminal device, and storing the same in a storage device; and the transaction stored in the storage device The second certificate identification information is generated using the data representing the contents and the transaction sequence data determined by the transaction sequence management means based on the transaction sequence data stored in the storage device, and stored in the storage device. Collating means for collating the issued certificate identification information with the second certificate identification information; Means for setting warning information when it is determined that the certificate identification information does not match the second certificate identification information. 18. An acquisition step for acquiring certificate identification information generated from data representing transaction content and transaction sequence data for managing the transaction, and at least one of the certificate identification information and data representing the transaction content. And a step of outputting a certificate. 19. A certificate for generating certificate identification information using data representing the transaction content and transaction sequence data determined by a predetermined rule when communication with the center device cannot be established at the time of receiving a certificate creation instruction. An identification information generating step; and a step of storing, in a storage device, the certificate identification information generated in the certificate identification information generating step, data representing the transaction content, and transaction sequence data corresponding to the transaction in a storage device. 19. The certificate issuance processing method according to claim 18, wherein in the obtaining step, the certificate identification information generated in the certificate identification information generating step is obtained. 20. A transmission step of transmitting at least data representing the transaction content to the center device when communication with the center device has been established at the time of receiving a certificate creation instruction, further comprising: 20. The certificate issuance processing method according to claim 18, wherein the certificate identification information is acquired by receiving the certificate identification information from the center device. 21. When communication with the center device can be established after the certificate identification information is generated in the certificate identification information generating step, the certificate identification information and the transaction content stored in the storage device are displayed. 20. The method according to claim 19, further comprising transmitting data and the transaction sequence data to the center device. 22. Receiving the certificate identification information and the latest center device-side transaction sequence data from the center device, wherein the certificate identification information generating step further comprises: 22. The certificate issuance processing method according to claim 19, wherein the certificate identification information is generated using data, terminal device-side transaction sequence data, and the transaction content data. 23. Receiving, from a terminal device, data representing transaction contents, transaction sequence data, data representing the transaction contents, and certificate identification information generated from transaction sequence data determined by a predetermined rule, and storing the received data. A receiving step of storing the transaction content stored in the storage device and a transaction sequence data determined based on the transaction sequence data stored in the storage device.
A collation step of generating the certificate identification information of the above, and collating the certificate identification information stored in the storage device with the second certificate identification information;
And setting information for warning when it is determined that the certificate identification information does not match the certificate identification information. 24. When receiving data representing the transaction content without the certificate identification information from the terminal device in the receiving step, generating transaction sequence data; and generating data representing the transaction content. Certificate identification information generating step of generating certificate identification information using the transaction sequence data, and the certificate identification information generated in the certificate identification information generating step and the generated transaction sequence data to the terminal device. The certificate identification information processing method according to claim 23, further comprising: transmitting. 25. When receiving data representing transaction content and terminal device-side transaction sequence data without the certificate identification information from the terminal device, generating center device-side transaction sequence data; A certificate identification information generating step of generating certificate identification information using data representing the contents, the terminal device side transaction sequence data, and the center device side transaction sequence data; and a certificate generated in the certificate identification information generating step. The certificate identification information processing method according to claim 23, further comprising: transmitting an identification information and the generated center apparatus side transaction sequence data to the terminal device. 26. The terminal device-side transaction sequence data and the center device determined based on the transaction content data stored in the storage device and the transaction sequence data stored in the storage device in the collating step. The second certificate identification information is generated using the side transaction sequence data, and the certificate identification information stored in the storage device is compared with the second certificate identification information. 26. The certificate identification information processing method according to any one of 23 or 25. 27. A computer, comprising: an acquisition step of acquiring certificate identification information generated from data representing transaction content and transaction sequence data for managing the transaction; certificate identification information and data representing the transaction content. And a step of outputting at least a part of a certificate issuance program. 28. A certificate for generating certificate identification information by using data representing the transaction content and transaction sequence data determined by a predetermined rule when communication with the center device cannot be established at the time of receiving a certificate creation instruction. An identification information generation step, and a step of storing, in a storage device, the certificate identification information generated in the certificate identification information generation step, data representing the transaction content, and transaction sequence data corresponding to the transaction in a storage device. 28. The certificate issuing program according to claim 27, further comprising: in the acquiring step, acquiring the certificate identification information generated in the certificate identification information generating step. 29. Data representing transaction contents and a transaction sequence from a terminal device are transmitted to a computer.
A receiving step of receiving data, data representing the transaction content, and certificate identification information generated from transaction sequence data determined by a predetermined rule, and storing the received information in a storage device; and the transaction stored in the storage device. Second, using the data representing the contents and the transaction sequence data determined based on the transaction sequence data stored in the storage device.
A collation step of generating the certificate identification information of the above, and collating the certificate identification information stored in the storage device with the second certificate identification information; and, in the collation step, the certificate identification information and the second certificate identification information.
Setting information for warning when it is determined that the certificate identification information does not match the certificate identification information, and a certificate identification information processing program for executing the following. 30. A recording medium storing the program according to claim 27. 31. Certificate identification for generating certificate identification information using data representing transaction contents and transaction sequence data determined by a predetermined rule when communication with the center device cannot be established at the time of receiving a certificate creation instruction. Information generating means, means for storing in the storage device the certificate identification information generated by the certificate identification information generating means, data representing the transaction content, and transaction sequence data used by the certificate identification information generating means, Means for outputting the certificate identification information generated by the certificate identification information generating means and at least a part of the data representing the transaction contents; and the center apparatus after the certificate identification information generating means generates the certificate identification information. When communication with the certificate can be established, the certificate identification information stored in the storage device and data representing the transaction content and the Terminal device having transmission means for transmitting the pulling sequence data to the center device, the. 32. Certificate identification for generating certificate identification information using data representing transaction contents and transaction sequence data determined by a predetermined rule when communication with the center device cannot be established at the time of receiving a certificate creation instruction. An information generation step; the certificate identification information generated in the certificate identification information generation step; data representing the transaction content; and a transaction sequence used in the certificate identification information generation step.
Storing the data in a storage device; outputting the certificate identification information generated in the certificate identification information generating step and at least a part of the data representing the transaction content; and the certificate identification information generating step. When communication with the center device can be established after the certificate identification information is generated, the certificate identification information, data representing the transaction content, and the transaction sequence data stored in the storage device are transmitted to the center device. And a transmitting step for transmitting to the certificate issuing method. 33. Certificate identification for generating certificate identification information using data representing transaction contents and transaction sequence data determined by a predetermined rule when communication with the center device cannot be established at the time of receiving a certificate creation instruction. An information generation step; the certificate identification information generated in the certificate identification information generation step; data representing the transaction content; and a transaction sequence used in the certificate identification information generation step.
Storing the data in a storage device; outputting the certificate identification information generated in the certificate identification information generating step and at least a part of the data representing the transaction content; and the certificate identification information generating step. When communication with the center device can be established after the certificate identification information is generated, the certificate identification information, data representing the transaction content, and the transaction sequence data stored in the storage device are transmitted to the center device. A sending step for sending to a computer; and a certificate issuing processing program for causing a computer to execute. 34. The transaction sequence management unit according to claim 11, wherein the transaction sequence management means checks whether the transaction sequence data stored in the storage device is genuine transaction sequence data. The center device as described. 35. A system according to claim 11, further comprising means for transmitting information for settlement of said transaction to a computer for settlement processing when receiving information for settlement of said transaction together with data representing transaction contents. The center device according to any one of the above.