JP2002352038A - Method and computer program for electronic lot drawing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify procedures of a user (purchaser) and to minimize the number of persons to which personal information of the user is disclosed. SOLUTION: User register information related to the user as the lot purchaser is stored in an agent machine 16 which sells a lot in response to access from a client machine 14 which the user operates. When a prescribed lot format including user input columns is transmitted from a lottery sponsor machine 18 to the agent machine 16, the agent machine 16 stores the lot format after authenticating a lottery sponsor. The lot format is transmitted from the agent machine 16 to the client machine 14. The client machine 14 inputs essential items to the lot format after authenticating the agent and returns the filled lot format. The sponsor machine 18 draws a lot and transmits information indicating at least a winning number to the agent machine 16. Then the agent machine 16 refers to the stored filled lot formats to decide whether the user is a winner or not on the basis of information indicating the winning number after authenticating the sponsor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for executing an electronic lottery using a network.

[0002]

2. Description of the Related Art There is a method in which various lotteries such as a conventional lottery ticket and a lottery ticket are purchased through a network such as the Internet, and settlement such as payment of a purchase money and a winning money is realized by electronic commerce. Proposed and partially implemented.

For example, Japanese Patent Application Laid-Open No. Hei 8-202785 proposes a system in which a lottery is purchased by an ATM machine or the like, and a payment is made or an elected money is received using an account of a financial institution. Also, Japanese Patent Application Laid-Open No. 2000-2152
No. 55 discloses a technique using a hash value in order to solve a new problem caused by networking, for example, improving security against data tampering.

[0004]

However, the system disclosed in Japanese Patent Application Laid-Open No. Hei 8-202785 is based on the premise that an ATM is used in place of a lottery counter, and a partial electronic lottery is required. It is only proposed. The user (purchaser) is authenticated by a cash card or a password (personal identification number). Therefore, payment for lottery sales and lottery purchases can be performed only by financial institutions.

On the other hand, in the technique disclosed in Japanese Patent Application Laid-Open No. 2000-215255, a model is constructed in which a lottery method conventionally sold at a counter is directly realized on a network. That is, the procedures for selling lotteries, confirming winnings, and paying winnings are the same as the conventional lottery method, and the user (buyer) makes a procedure for purchasing lotteries to the store, In addition, it is necessary to take steps to claim the winnings from the financial institution.

[0006] Therefore, from the lottery purchase to the reception of the winning money, it is necessary to perform data communication with different parties depending on the stage, and there is a problem that the procedure of the user becomes complicated. In addition, there is a problem that personal information of a user must be disclosed to various parties (for example, both a store and a financial institution) in order to communicate with different parties depending on the stage. In addition, according to the above conventional method, if the organizer of the lottery and the financial institution that settles the price for the lottery are different, it is necessary to access the respective organizer and financial institution and disclose personal information. is there.

An object of the present invention is to provide an electronic lottery system in which the number of partners of data communication is reduced as much as possible to simplify the procedure of a user (purchaser) and the number of parties to which personal information of the user is disclosed is also minimized. With the goal. Another object of the present invention is to provide a system in which a user can purchase a lottery or the like by accessing a single partner even if there are a plurality of lottery organizers.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a client machine operated by a user who is a lottery purchaser, an organizer machine related to a lottery organizer, and a proxy for mediating transactions including lottery purchase by a user. A method in which machines of related parties including an agency machine relating to a store are connected to a network, respectively, and execute an electronic lottery by data communication between the machines. Storing user registration information relating to a user associated with the machine; transmitting a predetermined lottery format including a user input field from the lottery organizer machine to the agency machine; and
After authenticating the lottery organizer, storing the lottery format, transmitting the lottery format from the agency machine to a client machine, and, at the client machine, after authenticating the agency, In the lottery format, inputting required items, transmitting the inputted lottery format from the client machine to the agency machine, and in the agency machine, after authenticating the user, Accumulating a format, performing lottery drawing on the host machine, and transmitting at least information indicating a winning number from the host machine to the agency machine; and After authenticating, based on the information showing the winning number, Referring to serial accumulated previously entered lottery format, it is achieved by the implementation of an electronic lottery, characterized in that a determining Toraku user.

According to the present invention, a client machine comprises:
It is sufficient to disclose the registration information only to the agency, and it is possible to purchase lotteries by accessing only the agency. Therefore, the user can minimize the disclosure of personal information and use the electronic lottery system with a simple procedure.

[0010] In a preferred embodiment, further, prior to a session between the client machine and the agency machine, exchanging an electronic certificate, user registration information including at least the user name, and
Transmitting, based on the user registration information, signature information generated using a user's secret key from the client machine to the agency machine; and, at the agency machine, verifying the signature information. Accumulating registration information; exchanging an electronic certificate between the client machine and the agency machine; and, at the agency machine, the lottery format and, based on the lottery format, Transmitting signature information generated using a secret key from the agency machine to the client machine;
In the client machine, as the authentication, after verifying the signature information, in the lottery format,
Inputting required items, transmitting the input lottery format, and signature information generated using the client's private key based on the input lottery format from the client machine to the agency machine And the step of performing.

According to the present embodiment, prior to the session between the client machine and the agency machine, an electronic certificate is exchanged, and authentication and signing of data using this electronic certificate are performed.
Since verification of the signature is realized, purchase of a secure lottery can be realized without performing complicated procedures and processes.

In another preferred embodiment, further, prior to a session between the agent machine and the host machine, exchanging an electronic certificate;
In the host machine, a lottery format, and, based on the lottery format, transmitting signature information generated by using a secret key of the lottery host, from the lottery host machine to the agency machine; In the agency machine, after the signature information is verified as the authentication, the lottery format is stored, and in the organizer machine, lottery of the lottery is performed, and information indicating at least a winning number, and Transmitting signature information generated using the secret key of the host based on the information indicating the number from the host machine to the agency machine; and verifying the signature information as authentication at the agency machine. After that, based on the information indicating the winning number, referring to the entered lottery format, It determines and a step.

According to this embodiment, the electronic certificate is exchanged between the organizer machine and the agency machine prior to the session to perform authentication, lottery format signature, and signature verification. ing. As a result, secure transactions can be performed between the machines by substantially the same procedure as that between the client machine and the agency machine.

[0014] In another preferred embodiment, the user registration information includes an account number of the financial institution owned by the user, and furthermore, a financial institution that executes settlement related to purchase of lottery and transfer of winning money. A financial institution machine is connected to a network, and at the agency machine, referring to the purchase history, creating transfer information for the agency, indicating a purchase amount and a transfer destination of a lottery purchased by the user; A step of exchanging an electronic certificate between the agency machine and the financial institution machine, transfer information for the agency, and, based on the transfer information for the agency, generated using a secret key of the agency. Transmitting the signature information to the financial institution machine, and in the financial institution system, after verifying the signature information, Based on the transfer information for serial agency, and a step of performing the transfer with respect to the distributor. This allows the user to transfer the price for the lottery purchase to the agency without having to separately access the financial institution machine.

In a more preferred embodiment, further, in the agency machine, with respect to the winning user, referring to the registration information, creating transfer information for the user indicating a winning amount and a transfer destination;
Transferring the signature information generated by using the secret key of the agency from the agency machine to the financial institution machine based on the transfer information for the user and the transfer information for the user; , After verifying the signature information, based on the transfer information,
Performing a transfer to the user. This allows the user to operate the client machine and receive the winning money without accessing the financial institution machine separately.

[0016] In another preferred embodiment, the agent machine refers to the purchase history to create bill information indicating a purchase amount of a lottery purchased by the user; Is stored in association with the registration information.

In a more preferred embodiment, the method further comprises a step of storing, in the agency machine, a winning amount of the winning user as a deposit in association with the registration information. More preferably, the step of preparing the bill information includes the step of setting a value obtained by subtracting the deposit amount from the purchase amount as a charge amount. These embodiments can be realized by making a carrier or a credit card company an agent.

Further, in another preferred embodiment, following the determination of the user's hit on the agency machine, a step of generating a hit field indicating hit information relating to the user is performed, further comprising the steps of: And transmitting, to the client machine, signature information generated by using a secret key of an agent based on the notification field.

[0019] In a more preferred embodiment, the agent machine further comprises:
Generating a winning amount field indicating a winning amount, a notification field consisting of a winning field and a winning amount field, and, based on the notification field, signature information generated using a secret key of an agency, the client machine, Communicating. The transmitting may be performed in response to an access request from the client machine. Alternatively, the transmitting step may be performed by e-mail.

In another preferred embodiment, a step of obtaining a certificate of the organizer by a client machine, and a step of generating the certificate in the agent machine using the lottery format and the secret key of the lottery organizer. Generating a second signature information generated using the secret key of the agency based on the lottery format with the lottery organizer signature information and the lottery format with the lottery organizer signature information. Transmitting a lottery format with lottery organizer signature information, to which the second signature information has been added, to a client machine; and verifying the signature information and the second signature information at the client machine. And the step of performing.

It is another object of the present invention to provide a client machine operated by a user who is a lottery purchaser, an organizer machine related to a lottery organizer, and an agency related to an agency that mediates transactions including lottery purchase by a user. A computer program to be executed by a client machine in order to execute an electronic lottery by data communication between the machines in a system connected to a network, the machine including a machine, and Transmitting user registration information regarding the user associated with the client machine, and exchanging an electronic certificate with the agency machine;
A predetermined lottery format including a user input field transmitted from the organizer machine to the agency machine, and, based on the lottery format, signature information generated using a secret key of the agency, the agency machine Receiving, and after verifying the signature information, inputting required items in the lottery format, the input lottery format, and the client's private key based on the input lottery format. Transmitting the signature information generated from the client machine to the agency machine from the client machine by the client machine.

It is another object of the present invention to provide a client machine operated by a user who is a lottery purchaser, an organizer machine related to a lottery organizer, and an agency related to an agency that mediates transactions including a lottery purchase by a user. A computer program to be executed by an agency machine in order to execute an electronic lottery by data communication between the machines in a system connected to a network, wherein each machine of a related person including the machine is accessed by a client machine. By storing user registration information relating to the user associated with the client machine, exchanging an electronic certificate with the lottery organizer machine, a predetermined lottery format including a user input field, and Based on the lottery format, the secret key of the lottery organizer Receiving the generated signature information from the lottery organizer machine, storing the lottery format after verifying the signature information, and exchanging an electronic certificate with the client machine. Step, the lottery format, and, based on the lottery format, a step of transmitting signature information generated using a secret key of an agency to the client machine, and indispensable items are input in the client machine. Receiving the signature information generated from the client machine based on the input lottery format and the client's private key based on the input lottery format, and after verifying the signature information, Storing the lottery format, and the host machine At least, based on the lottery of the lottery, information indicating the winning number and the winning amount, and based on the information indicating the winning number, the signature information generated by using the secret key of the organizer, the host machine And verifying the signature information and, after verifying the signature information, referring to the stored entered lottery format based on the information indicating the winning number, and The present invention is also achieved by a computer program characterized by being executed.

[0023]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram schematically showing a system for executing an electronic lottery according to the present embodiment. As shown in FIG. 1, in the present embodiment, the Internet 12
Personal computer 14-1, mobile phone or PDA
Is connected. The client who purchases the electronic lottery operates the personal computer 14-1 and the portable terminal 14-2. Less than,
In this specification, the personal computer 14-1,
The portable terminal 14-2 is simply referred to as “client machine 1”.
No. 4 ". In this specification, a lottery purchaser is referred to as a user or a client, and a computer or a portable terminal operated by the user is referred to as a client machine.

Also, on the Internet 12, an agent machine 16 having the function of an electronic lottery agent, an organizer machine 18 related to an electronic lottery organizer, a financial institution machine 20 related to a financial institution, An electronic certificate authority 22 that issues an electronic certificate to a person involved in the electronic lottery is connected.

The electronic lottery agent registers the operator of the client machine 14, that is, the member who purchases the electronic lottery,
It has a function to intervene in various data communications related to electronic lottery. That is, in the present embodiment, all procedures such as purchase of lottery and winning confirmation by the member, and a transfer request such as winning money are realized through the agency machine 16.

In FIG. 1, a single agency machine 16
Is shown, but there may be a plurality of agents. In this case, the user of the client machine 14 may register as a member at any of the agencies. Although a single host machine 18 is shown in FIG. 1, a plurality of host computers may exist. In this case, the user:
Various electronic lotteries can be purchased through agents.

FIG. 2 is a diagram schematically showing data communication in the system according to the present embodiment. As shown in FIG. 2, in the present embodiment, information from the client machine 14 is transmitted to another machine via the agency machine 16. Similarly, information from other machines (eg, the lottery organizer machine 18) is
Is transmitted to the client machine 14 via the. For example, the format of the electronic lottery is provided from the host machine 18 to the agency machine 16 and stored in the agency machine 16. A user who wants to purchase an electronic lottery establishes a communication path between the client machine 14 and the agency machine 16 and requests the agency machine 16 to purchase an electronic lottery. The transfer of the lottery sales to the lottery organizer and the transfer of the lottery winnings to the user are also realized by data communication between the agency machine 16 and the financial institution machine 20.

FIG. 3 is a flowchart schematically showing a procedure for executing an electronic lottery in the system according to the present embodiment. As shown in FIG. 3, in the present embodiment, an electronic certificate is obtained by a related person (step 301).
is necessary. As will be described later, in the present embodiment, using the digital certificates acquired by the parties concerned,
The data communication partner is authenticated. Therefore, registration of the client machine 14 (step 30)
Also in the case of 2), the client machine 14
From 2, it is necessary to obtain an electronic certificate that has authenticated the user of the client machine. This step 302
Will be executed when a new user uses this system.

When the organizer machine 18 executes an electronic lottery, the organizer machine 18 transmits a necessary lottery format to the agency machine 16 (step 303). In the present embodiment, as an example, it is assumed that a lottery in which a user inputs a number having a predetermined number of digits is performed. These steps 301 to 303 are a process before the user purchases a lottery.

The purchase of the electronic lottery by the user is realized by data communication from the client machine 14 to the agency machine 16 (step 304). After the purchase of the electronic lottery by the user is repeated for a certain period, the agency machine 16 accesses the financial institution machine 20 and requests that the purchase price of the user be transferred to the account of the agency (step 305). . These steps 30
Steps 4 and 305 are the electronic lottery purchase process.

When the purchase of the lottery is completed, the winning number is determined by executing the lottery in the organizer. The winning number and the like are sent from the organizer machine 18 to the agency machine 16
(Step 306). When the client machine 14 accesses the organizer machine 18, the user can know the winning of the electronic lottery purchased by the user (step 307). These steps 306, 30
7 is the winning confirmation process.

At the agency, a transfer to the winner or a transfer to the lottery organizer is requested to the financial institution (step 308). In response, the financial institution makes the necessary transfer (step 30).
9). These steps 308 and 309 are a transfer process.

Hereinafter, the processing including the steps shown in FIG. 3 will be described in more detail. FIG. 4 is a flowchart showing the pre-purchase process in more detail. FIG.
In, the user operating the client machine,
User registration with the agency has been completed in advance. An electronic certificate is distributed from a digital certificate authority to each of a financial institution, a lottery organizer, an agency, and a user of a client machine, so that those concerned can use the system ( Step 401). This digital certificate is
It contains the name of each owner, the value of the public key, the ID indicating the public key algorithm, the expiration date, and the like.

The user operates the client machine 14 to access the agency machine 16. At this time, the electronic certificates are exchanged (step 402). Next, the registration information with the electronic signature is sent from the client machine 14,
The information is transmitted to the agency machine 16 (step 403). Here, it is desirable that the user designate a method for winning confirmation (for example, an access from a client machine to a notification field to be described later).

FIG. 5A is a diagram for explaining registration information with an electronic signature. In FIG. 5A, a hash value 502 is generated by using a one-way hash function based on user registration information 501, for example, a user name, a financial institution name, and an account number. Next, the digital signature 504 is created by encrypting the hash value with the secret key of the client (user) (see arrow 503). As a result, registration information 500 with an electronic signature including the registration information and the electronic signature is obtained.

Upon receiving registration information 500 with an electronic signature, agent machine 16 verifies the electronic signature (step 404). As shown in FIG. 5B, in the agency machine 16, a hash value 511 is obtained by using a one-way hash function based on the registration information body in the obtained registration information with an electronic signature, and The signature is decrypted with the client's public key attached to the electronic certificate (see arrow 512), and the hash value 51
Get 3. If the two are compared (see arrow 514) and they match, the signature is known to be correct.

The agent machine 16 exchanges a certificate with the lottery organizer machine 18 (step 405), and requests transmission of a lottery format. Lottery organizer machine 18
Transmits the lottery format with the electronic signature to the agency machine 16 in response to this (step 406).
More specifically, as shown in FIG. 5C, the lottery organizer machine 18 uses the lottery format 521 to
By using a one-way hash function, the hash value 5
22 is generated. Next, the digital signature 524 is generated by encrypting the hash value with the secret key of the organizer (see arrow 523). This allows lottery format 5
21 and an electronic signature lottery format 520 comprising the electronic signature 524 is obtained.

Upon receiving the lottery format 520 with an electronic signature from the organizer machine 18, the agency machine 16 verifies the electronic signature (step 407). More specifically, as shown in FIG.
, A hash value 531 is obtained by using a one-way hash function based on the lottery format itself among the acquired lottery formats with digital signatures, and the electronic signature is disclosed by the organizer attached to the digital certificate. Decrypted with the key (see arrow 532), the hash value 5
Get 33. Compare both (see arrow 534).
If they match, the signature is known to be correct. In this way, when the lottery format is acquired, the agency machine 16
Digitally signs the digital signature using the secret key of the agency (step 408), and stores it in a database (not shown) (step 409). In this way, the pre-purchase process is completed. FIG. 7A shows the procedure of the digital signature in the agency in more detail.

Next, the purchase process in response to the user operating the client machine 14 will be described. FIG. 6 is a flowchart showing the purchase process in more detail. When the user operates the client machine 14 to access the agency machine 16, an electronic certificate is first exchanged (step 601). As described above, in the present embodiment, a digital certificate is exchanged during a session between a client and a machine. Then, in response to the request to access the purchase page, the purchase page including the lottery format digitally signed by the agency is transmitted to the client machine (step 60).
2). As shown in FIG. 7A, in step 408, the hash value 702 obtained by using the one-way hash function based on the lottery format 701 is encrypted with the agency secret key (see arrow 703), and Signature 70
4 has been obtained.

Therefore, in the client machine 14, the lottery format main body 7 out of the lottery format 700 with the electronic signature transmitted in step 602.
01, a hash value 711 is obtained using a one-way hash function, while the digital signature 704 is decrypted with the public key 712 of the agent, and the hash value 713 is compared with the hash value 711 (step 603). If the two match, the signature is determined to be authentic.

Next, in the client machine 14, when the user operates the input device to put a predetermined mark on the lottery format, the expected number is written in the lottery format (step 604). The client machine 14 calculates a hash value 722 using a one-way hash function based on the lottery format (write data: 721 in FIG. 7) in which the expected number is written, and stores the hash value of the user (client). Encrypted with a private key (see arrow 723), and digital signature 724
Get. The electronic signature-added write data 720 thus obtained is transmitted to the agency machine 16.

The agency machine 16 obtains a hash value 731 using a one-way hash function based on the write data of the obtained data 720, and decrypts the electronic signature 724 with the public key of the client. (See arrow 732), hash 733 is obtained. Agent machine 16 compares hash 731 and hash 733 (see arrow 734) to determine that the signature is authentic. As a result of verifying the electronic signature (step 607),
If the signature is authentic, the user's written data is stored in a database (not shown) in association with the user's registration information (step 608). Also,
The purchase history of the user may be updated in association with the registration information of the user (step 612).

Next, in order to transfer the lottery purchase price from the user's (client's) account to the agency's account, the agency machine 16 uses the transfer request data including the user (client) name, account number, etc. A hash value is calculated using a one-way hash function, and the hash value is encrypted with a secret key of the agency to create signature information. After the certificate exchange between the agency machine 16 and the financial institution machine 20 (step 610), the agency machine 16 transmits the transfer request data with the electronic signature including the transfer request data and the signature information to the financial institution machine 20. Is performed (step 611).

After generating the hash value based on the transfer request data and obtaining the hash value by decrypting the electronic signature, the financial institution machine 20 compares the two hash values (step 613). If the hash values match, it is determined that the signature is authentic, and a transfer is made from the account of the user (client) who is the purchaser of the electronic lottery to the account of the agency (step 614).

The processing of steps 601 to 614 in FIG.
It is executed every time a user accesses the electronic lottery sales period. Steps 611, 613 and 6
The process of 14 may not be performed every time a user purchases an electronic lottery, but may be collectively executed for each predetermined period for a user (client) who purchased the electronic lottery during the period. Next, the winning confirmation step and the transfer process will be described with reference to FIG. The lottery organizer machine 18 executes the lottery at the predetermined timing of executing the electronic lottery and determines the winning number (step 801). Next, a winning number with an electronic signature in which an electronic signature is added to the winning number is created (step 80).
2).

The winning numbers with electronic signatures are shown in FIG. 5 and FIG.
Are created in a procedure substantially similar to the procedure described in. That is, based on the winning number, a hash value is generated using a one-way hash function, and an electronic signature is created by encrypting the hash value with a secret key of the organizer. Thereby, it is possible to obtain a winning number with an electronic signature including the winning number and the electronic signature.

The lottery organizer machine 18 and the agency machine 16
After the certificate is exchanged between (step 803),
The winning number with an electronic signature is transmitted from the lottery organizer machine 18 to the agency machine 16 (step 804). In the agency machine 16, the digital signature is verified by a procedure substantially similar to that described with reference to FIGS. 5 and 7 (step 805). To explain again, a hash value is calculated using a one-way hash function based on the winning number, and on the other hand, the hash value is obtained by decrypting the electronic signature with the public key of the lottery organizer. Be compared. If they match, the signature is determined to be authentic.

Next, the agency machine 16 refers to the write data of the user who is the purchaser of the electronic lottery stored in the database to determine the winning of each user (step 806). Next, for each user, an electronic signature is applied to a winning field including information indicating a winning of the electronic lottery purchased by the user, a grade or a prize in the case of winning, and a winning field with an electronic signature is generated. Here, a hash value is calculated using a one-way hash function based on the hit field, and the digital signature is obtained by encrypting the hash value with the secret key of the agency (step 807).

When the client machine 14 accesses the agency machine 16, after the exchange of the certificates (step 808), the process of confirming the winning is executed (step 809). For example, it can be realized by the client machine 14 acquiring the hit field with the electronic signature from the agency machine 16 and referring to the hit field.

FIG. 11 and FIG. 12 are flowcharts showing the processing at the time of winning confirmation executed by the agency machine 16 and the client machine 14, respectively.
As shown in FIG. 11, in the agency machine 16, for a certain user (step 1101), referring to the purchase history of the user (step 1102), it is determined whether or not the user is hit.

Next, the agency machine 16 encrypts the hit information using the client public key (step 1103), and stores the encrypted hit information in the hit field of the user (step 1104). Here, the notification field including the winning field and the winning amount field described later is a data area related to the user and displayed on the browser by accessing the client machine. Next, when it is determined that the winning is performed by the agency machine 16, the agency machine 16 encrypts the winning amount using the client public key (step 1105), and transmits the encrypted winning amount to the user. It is stored in the winning amount field (step 1106). Such processing is executed for all the users who purchased the lottery (see step 1107), and necessary information is stored in the hit field or the like of each user. The notification field consisting of the winning field and the winning amount field,
An electronic signature with the agency's private key is attached.

When the user wants to know the winning or losing amount of the lottery he / she purchased, the client machine 14 accesses the agency machine 16 (step 120).
1). Here, certificates are exchanged between the client machine 14 and the agency machine 16. Next, after verifying the electronic signature of the agent in the own notification field (step 1202), the information in the winning field is decrypted with the client secret key (step 1203), and the information in the winning amount field is similarly converted. , Decrypted with the client private key (step 1204). The information indicating the winning or the winning amount is displayed on the browser (step 1205), so that the user can know the winning of the lottery purchased and the winning amount.

After the notification of the winning or prize amount to the user is finished, the agency machine 16 deletes the winning account from the agency account.
A process for requesting a transfer from the account of the user (client) to the account of the organizer or a transfer from the agency account of the sales proceeds is executed. In more detail, the winning money transfer request data including the account number and the transfer amount of the user (client) and an electronic signature using the secret key of the agency are added (winning money transfer request data with an electronic signature), In addition, the sales transfer request data including the organizer's account number and the transfer amount, to which an electronic signature using the secret key of the agency is added (the sales transfer request data with the electronic signature) is transmitted to the agency machine 16. (Step 811) after the exchange of the certificate between the client and the financial institution machine 20 (step 811).
2).

The financial institution machine 20 verifies the signatures of the winning money transfer request data and the sales transfer request data (step 813). This method is the same as that described with reference to FIGS. 5 and 7, and a detailed description thereof will be omitted. If the signature is authentic, the financial institution machine 20 executes a transfer based on the winning money transfer request data or the sales transfer request data (step 814). In this manner, a series of procedures such as the execution of the lottery, the determination of the winning, and the transfer of the winnings and the sales are completed.

According to the present embodiment, an electronic certificate is exchanged for each session, and an electronic signature is verified using a public key attached to the electronic certificate. In addition, all the procedures are executed via the agency machine 16 except for the procedure of initially obtaining the certificate from the electronic certificate authority.
Therefore, the user (client)
Only the agency needs to disclose the user's personal information (name, account number, etc.). Therefore, by reducing the need for the user to disclose personal information to a large number of parties, it is possible to enhance the security of transactions. Further, according to the present embodiment, the user (client) only needs to access the agency machine for purchase of lottery, confirmation of winning, transfer, and the like. Therefore, the electronic lottery system can be used without complicated procedures for accessing each of the concerned parties.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, this is done. For example, in the above-described embodiment, when the lottery format is transmitted from the agency machine to the client machine, only the electronic signature by the agency is added. However, the present invention is not limited to this. An electronic signature of the organizer, which is the issuer, and an electronic signature of the agency may be added.

In this case, as shown in FIG. 9, the agent machine 16 obtains the lottery format with the signature of the organizer (step 901), and, based on this, an electronic ticket using the secret key of the agent. Sign (Step 90)
2). As shown in FIG. 10A, the lottery organizer machine 1
8, based on the lottery format 1001,
The hash value 1002 is calculated using a one-way hash function, and the hash value 1002 is encrypted with the secret key of the lottery organizer (see arrow 1003), and the digital signature 1004 is obtained.
Has been obtained. This lottery format 1001
And a lottery format 1000 with an electronic signature, which is composed of an electronic signature 1004 and an electronic signature 1004.

Therefore, in the agency machine 16, as shown in FIG. 10B, based on the lottery format 1000 with the electronic signature, the hash value (second hash value) 1011 is utilized by using a one-way hash function. Calculated and encrypted with the secret key of the agency (arrow 1012).
), And a second digital signature 1013 is obtained. The lottery format 1000 with an electronic signature created by the organizer and the second electronic signature 1013 created by the agency
The digitally signed lottery format 1010 consisting of
It is transmitted from the agency machine 16 to the client machine 14.

The client machine 14 obtains the hash value based on the lottery format and decrypts the electronic signature with the public key of the lottery organizer (step 911), and obtains two hash values (first hash value). Then, these are compared to verify the signature of the lottery organizer (step 912). Also, by obtaining the second hash value based on the digital signature by the lottery format and the lottery organizer, and decrypting the second digital signature with the public key of the agency (step 913), the two hash values (second Are obtained, and these are compared to verify the signature of the agency (step 914).

These processes are schematically shown in FIG. In step 911, the hash value 1
021 is obtained, and the hash value 1023 is calculated by decrypting the electronic signature with the public key of the lottery organizer (arrow 1022). In step 912,
These are compared. Also, in step 913,
Lottery format with digital signature of lottery organizer 1010
Is obtained, and the second electronic signature is decrypted with the public key of the agency (arrow 103).
2) As a result, a hash value 1033 is obtained. In step 914, these hash values (second hash values) are compared. With such a configuration, the user (client) can use the lottery format,
It will be possible to confirm that the agency and the organizer guarantee authenticity.

In the above-described embodiment, a financial institution machine related to a financial institution is provided, and the withdrawal from the user's account at the time of the lottery purchase and the transfer of the winning money to the user's account are realized. The present invention is not limited to this, and may be configured such that the agency itself makes the payment.

In this embodiment, the present invention can be realized by a company capable of issuing a bill, such as an Internet company (carrier) or a credit card company, acting as an agent. FIG. 13A is a flowchart showing the processing executed after step 608 in FIG. 6, that is, the storage of the write data in the database. FIG.
As shown in FIG. 3A, the agency machine 16 calculates the purchase price of the user (step 1301) and charges the user, for example, the charge for using another service or the purchase price for another lottery. Is added to the current purchase amount (step 1302). Next, the agency machine 16
The newly calculated charge is stored in the database in association with the user's registration information (step 1303), and the purchase history is updated as in step 612 (step 1304).

The winning money is deposited, so that the agency can manage the winning money. FIG.
As shown in FIG. 3 (b), when the winning confirmation (Step 809 in FIG. 8) is completed, the agency machine 16 stores the winning as a deposit of the user in the database in association with the registration information of the user (Step 809). 1311). The amount of the deposit can be settled by subtracting it from the billed amount when creating the bill for the user (step 131).
2).

As described above, if the agency can issue the bill, it is possible to execute the electronic lottery without using the machine of the financial institution. The created invoice is sent to the user by mail or the like as in the past, and the user may pay based on the invoice, or may provide the agency with the account number of the financial institution in advance. If a request for direct debit is made, a predetermined financial institution performs a direct debit based on the bill. If the agency is a telecommunications carrier, the user may set to pay the bill with a credit card. In this case, the agency issues a bill to the credit card company based on the previously indicated credit card number.

If the agency is a business operator (communications carrier or credit card company) that can issue bills to users, settlement can be realized in the following manner. (1) Agency (credit card company) → Invoice issue →
Direct debit (2) Agency (credit card company) → Invoicing →
Offline payment (3) Agency (telecommunications carrier) → Issue of expense statement → Debit account (4) Agency (telecommunications company) → Issue of expense statement → Offline payment (5) Agency (telecommunications company) → Expense statement issue → Invoice to credit card company → Invoice issue → Debit account (6) Agency (telecommunications carrier) → Issue expense statement → Invoice to credit card company → Invoice issue → Offline payment Of course Needless to say, the present invention is not limited to these. Further, the processing after the issuance of the bill and the issuance of the specification can use a conventional mechanism.

Also, in the above embodiment, FIG.
As shown in FIG. 12 and FIG. 12, when the client machine accesses the notification field, the information indicating the winning and the information indicating the winning amount are displayed on the browser of the client machine, but the present invention is not limited to this. Not something. For example, an arrangement may be made wherein a mail addressed to the user's client machine is created on the agency machine 16 and transmitted to the user's mailbox. Here also, it is desirable to encrypt the information indicating the winning and the information indicating the winning amount using the client public key. Furthermore, in the above-described embodiment, the above-described notification uses an encryption using a client public key, but the present invention is not limited to this, and an encryption using an agency public key may be used. Alternatively, another encryption method such as SSL may be used.

In the other embodiment, the client machine 14 needs to acquire the certificate of the organizer. This may be obtained separately from the electronic certificate authority.
In this specification, the function of one unit may be realized by two or more physical units, or the function of two or more units may be realized by one physical unit.

[0068]

According to the present invention, an electronic lottery system in which the number of partners for data communication is reduced as much as possible to simplify the procedure of the user (purchaser) and the number of partners who disclose personal information of the user is minimized. Can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing a system for executing an electronic lottery according to the present embodiment.

FIG. 2 is a diagram schematically showing data communication in the system according to the present embodiment.

FIG. 3 is a flowchart schematically showing a procedure for executing an electronic lottery in the system according to the embodiment;

FIG. 4 is a flowchart illustrating a pre-purchase process according to the present embodiment in more detail.

FIG. 5 is a diagram for explaining information with a digital signature according to the present embodiment.

FIG. 6 is a flowchart showing the purchase process in the present embodiment in more detail.

FIG. 7 is a diagram for explaining information with a digital signature according to the present embodiment.

FIG. 8 is a flowchart illustrating a winning confirmation step and a transfer process according to the present embodiment in more detail.

FIG. 9 is a diagram illustrating an example of a processing flow according to another embodiment of the present invention.

FIG. 10 is a diagram for explaining information with a digital signature according to another embodiment.

FIG. 11 is a flowchart illustrating a process at the time of winning confirmation executed by the agency machine according to the present embodiment.

FIG. 12 is a flowchart illustrating a process at the time of winning confirmation executed by the client machine according to the present embodiment.

FIG. 13 is a flowchart illustrating a process executed by an agency machine according to still another embodiment.

[Explanation of symbols]

 12 Internet 14 Client machine 16 Agency machine 18 Organizer machine 20 Financial institution machine 22 Electronic certificate authority

Claims (16)

[Claims] Claims: 1. A client machine operated by a user who is a lottery purchaser, an organizer machine related to a lottery organizer,
And, a method of implementing an electronic lottery by a machine of a related person including an agency machine related to an agency that mediates transactions including a lottery purchase by a user is connected to a network, and data communication between the machines, By accessing from the client machine, in the agency machine, storing the user registration information relating to the user associated with the client machine, and a predetermined lottery format including a user input field from the lottery organizer machine to the agency machine Transmitting, at the agency machine, storing the lottery format after authenticating the lottery organizer; transmitting the lottery format from the agency machine to a client machine; the client machine In the said fee After authenticating the shop, inputting required items to the lottery format; transmitting the entered lottery format from the client machine to the agency machine; After authentication, accumulating the entered lottery format, in the organizer machine, to perform a lottery lottery, at least information indicating a winning number, to transmit from the organizer machine to the agency machine, Determining at the agency machine, after authenticating the organizer, referring to the stored entered lottery format based on the information indicating the winning number, and determining whether or not the user has been hit. How to conduct electronic betting. 2. Exchanging an electronic certificate prior to a session between the client machine and the agency machine, user registration information including at least the user name, and Transmitting, from the client machine, the signature information generated using the user's private key to the agency machine, based on the signature information, and storing the user registration information in the agency machine. Exchanging an electronic certificate between the client machine and the agency machine; and at the agency machine, using the lottery format, and a secret key of the agency based on the lottery format. A step of transmitting the generated signature information from the agency machine to the client machine. And-flops, in the client machine, said as the authentication, after verifying the signature information, the lottery format,
Inputting required items; and transmitting the input lottery format and signature information generated using the client's secret key based on the input lottery format from the client machine to the agency machine. 2. The method according to claim 1, further comprising the steps of: 3. exchanging an electronic certificate prior to a session between the agency machine and the organizer machine; and at the organizer machine, a lottery format and a lottery format based on the lottery format. Transmitting the signature information generated using the secret key of the lottery organizer from the lottery organizer machine to the agency machine; and in the agency machine, after verifying the signature information as the authentication. Accumulating the lottery format; performing lottery drawing on the organizer machine; generating at least the information indicating the winning number and the secret key of the organizer based on the information indicating the winning number. Transmitting the obtained signature information from the organizer machine to the agency machine; As, after verifying the signature information, based on information indicating the winning number, by referring to the previously entered lottery format, claim 1, characterized in that a determining Toraku user
Or the method for implementing an electronic lottery according to 2. 4. The user registration information includes an account number of the financial institution owned by the user, and further, a financial institution machine related to the financial institution that executes settlement related to purchase of lottery and transfer of winning money is connected to the network. In the agency machine, with reference to the purchase history,
A step of creating transfer information for the agency, indicating a purchase amount and a transfer destination of a lottery purchased by the user; a step of exchanging an electronic certificate between the agency machine and the financial institution machine; Transferring the signature information generated using the secret key of the agency to the financial institution machine based on the transfer information for the store and the transfer information for the agency; and in the financial institution system, the signature information And performing a transfer to the agency based on the transfer information to the agency after verifying the information. 4. The method according to claim 2, further comprising: 5. In the agency machine, for the winning user, referring to the registration information, creating a transfer information for the user indicating a winning amount and a transfer destination, the transfer information for the user, And transmitting signature information generated using the secret key of the agency from the agency machine to the financial institution machine based on the transfer information for the user; and verifying the signature information in the financial institution system. The method according to claim 4, further comprising the step of performing a transfer to the user based on the transfer information after the transfer. 6. In the agency machine, referring to the purchase history, creating bill information indicating a purchase amount of a lottery purchased by the user; and adding the bill information to the registration information. And storing the information in association with each other.
The method for carrying out an electronic lottery according to any one of the above. 7. The electronic lottery system according to claim 6, further comprising a step of storing, in the agency machine, a winning amount of the winning user as a deposit in association with the registration information. Implementation method. 8. The electronic lottery system according to claim 7, wherein the step of creating the bill information further comprises the step of setting the amount obtained by subtracting the amount of the deposit from the purchase amount as the amount to be charged. Implementation method. 9. A method for generating a hit field indicating hit information indicating a hit for the user following the determination of the hit of the user, a notification field including the hit field, and a proxy based on the notification field. 9. The method according to claim 2, further comprising transmitting signature information generated using a secret key of a store to the client machine. 10. A step of generating a winning amount field indicating a winning amount for a winning user; a notification field including a winning field and a winning amount field; and a secret key of an agency based on the notification field. Transmitting the generated signature information to the client machine. 10. The method according to claim 9, further comprising the steps of: 11. The method according to claim 9, wherein the transmitting is performed in response to an access request from the client machine. 12. The method according to claim 9, wherein the transmitting step is performed by e-mail. 13. The method according to claim 13, further comprising:
Obtaining the certificate of the organizer; and at the agent machine, a lottery format with lottery organizer signature information comprising the lottery format and signature information generated using a secret key of the lottery organizer; and Generating a second signature information generated by using a secret key of the agency based on the lottery format with the lottery signature information; a lottery signature added with the second signature information; 13. The method according to claim 1, further comprising: transmitting a lottery format with information to a client machine; and verifying the signature information and the second signature information at the client machine. The method for implementing an electronic lottery according to any one of the preceding claims. 14. Related parties including a client machine operated by a user who is a lottery purchaser, an organizer machine related to a lottery organizer, and an agency machine related to an agency that mediates transactions including a lottery purchase by a user. A computer program to be executed by a client machine to execute an electronic lottery by data communication between the machines in a system connected to a network, wherein the computer program is executed by the client machine with respect to an agency machine. Transmitting user registration information relating to a user; exchanging an electronic certificate with the agency machine; and a predetermined lottery including a user input field transmitted from the organizer machine to the agency machine. Format and the lottery format, Receiving signature information generated using a secret key from the agency machine; inputting essential information into the lottery format after verifying the signature information; and inputting the lottery format And transmitting the signature information generated by using the client's secret key from the client machine to the agency machine based on the entered lottery format. Computer program. 15. Further, between said agent machine,
Exchanging an electronic certificate; and transmitting, to the agency machine, user registration information including at least the user name and signature information generated based on the user registration information using a user's private key. 15. The computer program according to claim 14, wherein said program is executed by said client machine. 16. Related parties including a client machine operated by a user who is a lottery purchaser, an organizer machine related to a lottery organizer, and an agency machine related to an agency that mediates transactions including a lottery purchase by a user. A computer program to be executed by an agency machine in order to execute an electronic lottery by data communication between the machines in a system connected to a network. Storing user registration information relating to the user; exchanging an electronic certificate with the lottery organizer machine; a predetermined lottery format including a user input field;
Based on the lottery format, signature information generated using the secret key of the lottery organizer, receiving from the lottery organizer machine, after verifying the signature information, storing the lottery format, Exchanging an electronic certificate with the client machine; and transmitting the lottery format and signature information generated based on the lottery format using a secret key of an agency to the client machine. Receiving, from the client machine, an entered lottery format in which essential items are entered in the client machine, and signature information generated using the client's private key based on the entered lottery format. And after verifying the signature information, Accumulating the lottery format, based on the lottery of the lottery performed in the organizer machine, at least information showing the winning number and the winning amount, and based on the information showing the winning number, using the secret key of the organizer Receiving the generated signature information from the organizer machine; and, after verifying the signature information, referring to the stored input lottery format based on the information indicating the winning number, to determine whether or not the user has a hit. A computer program for causing the agency machine to execute the determining step.