JP2002207891A - Network auction system, method and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the communication cost of a user required for an auction and to periodically recognize merchandise put up to auction. SOLUTION: An auctioneer device 30 participating in the auction is registered beforehand in a sponsor device 20 and merchandise information regarding the merchandise and its own destination information are transmitted to the sponsor device in a seller device 10. The registered merchandise information and destination information are transmitted to the registered auctioneer device in the sponsor device and one piece of the merchandise information is specified and bidding information including a bidding price is transmitted to the seller device in the auctioneer device. The seller device selects the bidding price of the highest money amount among all the transmitted bidding prices and transmits a decision notice to the selected auctioneer device and the sponsor device. In such a manner, unlike before, an auctioneer does not access the homepage of a sponsor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network auction system, method, and storage medium for performing an auction via a network.

[0002]

2. Description of the Related Art Conventionally, in a network auction system for performing an auction on a network, a system in which information is disclosed on a homepage using the Web has been mainly used.

FIG. 7 is a schematic diagram showing a schematic configuration of a conventional network auction system. In this network auction, an auction-type auction will be described as an example, but a bid-down auction can be executed in substantially the same manner. The main difference between the auction type and the auction type is whether the starting price is low or high. There is also a shielded bid auction method, in which the bid information of the bidder is kept private and the highest or lowest price is selected from the bid information collected for a certain period of time.

In FIG. 7, a seller device (Web browser) 1 operated by a seller registers seller information in an organizer device (Web server) 2 operated by the organizer (W).
1). The seller information includes the name of the seller, contact information, credit information for service charge settlement, and the like. Then, the seller device 1 transmits the product information of the product to be sold to the organizer device 2.

[0005] The organizer device 2 returns a registration completion notification to the seller device 1 to notify the completion of registration of the seller information and the product information (W2). Then, the organizer device 2 uses its own homepage on the Web to open the auction merchandise, and generally informs the auction merchandise and the auction holding time of the merchandise (W3).

On the other hand, a bidder device (W) operated by a bidder
The web browser 4 accesses a home page operated by the organizer. If there is a favorite product, bid information including the price to be purchased is transmitted to the host device 2 (W
4). At that time, the bidding information is sent to the organizer device 2 together with the bidder information for communication.

The bidder information includes a bidder's contact information, a credit number for settlement of goods, and the like. The bidder information may be registered in the sponsor device 2 in advance. in this case,
A bidder can also be a seller, and the bidder device 3
Sends bid information to the organizer device 2, the bid information can be displayed anonymously when the bid information is disclosed on the homepage.

[0008] The organizer device 2 always discloses the bid information collected from the bidder device 3 in order to obtain information for the successful bid of the bidder device 3.

[0009] The bidder device 3 bids for an amount higher than the open bid information. Thus, after a certain period of time, the bidding ends, and the bidder who has bid the highest amount at that time has won the bid.

[0010] The organizer, when the product is sold, the seller,
The successful bidder is notified of the successful bid information as a result of the auction (W5), and the information of the successful bidder is transmitted to the seller device 1. The bidder (successful bidder) informs the seller device of the settlement method of the product and pays the price (W6).

[0011] If the organizer determines the payment method in advance, the method is followed. Usually, when registering a bidder or a seller in advance, a credit number is also registered, so that the settlement is performed using the credit number.

At that time, the organizer receives a part of the price as a service fee. When the price is paid, the seller sends the product to the successful bidder (W7), and the auction is completed.

In such a network auction system, the organizer has information on both sellers and bidders,
And with all the bidding information, the trust of the organizers is key to a successful auction.

[0014]

However, in the network auction system described above, a system using a WWW is used, in which a bidder (user) accesses a homepage of an organizer and transmits bid information if he / she likes. Has become.

Therefore, if there is a lot of image information on the Web,
It takes time to open the home page, and it is necessary to transmit the bid information therefrom, so that the communication cost is required for the bidder. If communication costs are incurred, there is a possibility that the willingness to know products to be regularly auctioned may be reduced. Therefore, it is desired to reduce communication costs.

The present invention has been made in view of the above circumstances, and has reduced the communication cost of users involved in auctions,
It is an object of the present invention to provide a network auction system, method, and storage medium capable of knowing products to be regularly auctioned.

[0017]

A first invention is a network auction system using a seller device, a sponsor device, and a bidder device connected to each other via a network, wherein the network auction system is provided in the sponsor device. Auction registration means for pre-registering a bidder device participating in an auction, auction registration means provided in the seller device for transmitting merchandise information on merchandise and own destination information to the organizer device, and the organizer device Auction information transmitting means for transmitting the merchandise information and the destination information obtained from the auction registration means to the bidder device registered by the bidder registration means, provided in the bidder apparatus, Identify any of the product information transmitted from the organizer device and enter the seller device based on the destination information. Bidding information transmitting means for transmitting bidding information including a value, bidding information storing means provided in the seller device and storing bidding information received from the bidding information transmitting means, and all bidding information in the bidding information storing means. Sell price determining means for selecting the highest bid price among the bid prices, and decision notification transmitting means for transmitting a determination notice to the auctioneer device and the organizer device that transmitted the bid price selected by the sell price determining means. , A network auction system comprising:

Further, a second invention is a network auction method using a seller device, an organizer device, and a bidder device connected to each other via a network, wherein the organizer device participates in an auction. A bidder registration step of pre-registering a bidder device; and, at the seller device, an auction registration step of transmitting product information on the product and its own destination information to the organizer device;
An auction information transmitting step of transmitting the product information and the destination information obtained in the auction registration step to the bidder apparatus registered in the bidder registration step, A bid information transmitting step of specifying any of the product information transmitted from the organizer device and transmitting bid information including a bid price to the seller device based on the destination information; A bid information storage step provided, wherein bid information obtained from the bid information transmission step is stored;
A selling price determining step of selecting the highest bid price among all the bid prices stored in the bidding information storing step, a bidder device transmitting the bid price selected in the selling price determining step, and the organizer device And transmitting a decision notification to the network auction method.

Here, the bid value may be signed and encrypted with a signature key unique to each bidder, and the selling price determination means / step may include all bids in the bid information storage means / step. The highest price may be determined without revealing a bid price other than the highest price among the values.

Further, transmission and reception among the seller device, the organizer device and the bidder device may be all performed by electronic mail.

A third invention is a computer-readable storage medium used in the seller device of a network auction system using a seller device, an organizer device, and a bidder device connected to each other via a network. Auction registration means for transmitting the merchandise information relating to the merchandise and its own destination information to the organizer apparatus in the computer of the seller apparatus, bidding information storage means for storing bidding information received from the bidding apparatus, and bidding information storage A selling price determining means for selecting the highest bid price among all the bid prices in the means, a bidder device transmitting the bid price selected by the selling price determining means, and a determination for transmitting a determination notice to the organizer device. A computer-readable storage medium storing a program for realizing the notification transmission unit.

As described above, the bid value may be signed and encrypted with a signature key unique to each bidder, and the selling price determination means may select, among all the bid values in the bid information storage means, The maximum price may be determined without revealing bid values other than the highest bid price.

According to a fourth aspect of the present invention, there is provided a computer-readable storage medium used for the organizer device of a network auction system using a seller device, a organizer device, and a bidder device connected to each other via a network. In the computer of the organizer device, bidder registration means for registering a bidder device participating in the auction in advance, and the bidder device registered by the bidder registration device, the merchandise information obtained from the seller device. A computer-readable storage medium storing a program for realizing an auction information transmitting unit for transmitting and a decision notification receiving unit for receiving a decision notification of a successful bid from the seller device.

A fifth invention is a computer-readable storage medium used in the bidder device of a network auction system using a seller device, an organizer device, and a bidder device mutually connected via a network. The computer of the bidder device, bid information provided in the bidder device, specifying any of the merchandise information transmitted from the organizer device, and transmitting bid information including a bid price to the seller device. Transmitting means, decision notice receiving means for receiving a decision notice of a successful bid from the seller device,
Is a computer-readable storage medium storing a program for realizing the program.

[0025] Similarly, the bid value may be signed and encrypted with a signature key unique to each bidder.

(Operation) Therefore, according to the present invention, by taking the above-described means, the auction information transmitting means of the organizer apparatus transmits the auction information from the auction registration means to the bidder apparatus registered by the bidder registration means. Since the acquired product information is transmitted, unlike the past, the auctioneer does not access the sponsor's homepage, so it is possible to reduce the communication cost of the auction user and to know the products that can be auctioned regularly. it can.

Further, the bid value is signed and encrypted with a signature key unique to each bidder, and the selling price determination means of the seller device includes:
Since the highest price is determined without revealing the highest bid price among all the bid prices in the bid information storage means, the privacy of bidders other than the highest bidder can be protected.

Further, since transmission and reception between the seller device, the organizer device and the bidder device are all performed by e-mail, the registration of the seller, the transmission of information on the bidder and the determination of the selling price can be simplified, and the seller and the bidder can be simplified. A network auction that does not burden both parties can be realized.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the present embodiment, the auction employs a shield bid auction method. The communication required for the auction shall use electronic mail. It is also possible to use a dedicated communication protocol or application instead of e-mail.

First, after an outline of the present embodiment is described,
A detailed description will be given. FIG. 1 is a schematic diagram showing a schematic configuration of a network auction system according to an embodiment of the present invention. Seller device operated by the seller (E-mai
l) 10 is the organizer device (E-mail) operated by the organizer
The seller information is sent to e-mail 20 and registered. Then, the merchandise information of the merchandise to be sold is transmitted to the organizer device (M1).

The organizer device sends the merchandise information by e-mail to a pre-registered bidder device (E-mail) (M
2). It is assumed that the merchandise information is sent, for example, in the form of an e-mail magazine and includes information such as a seller's e-mail address, merchandise introduction, auction start time and end time.

Further, a plurality of pieces of auction information are transmitted to the bidder device. The auctioneer device operated by the auctioneer receives the information on the product currently being auctioned by e-mail transmitted from the organizer device, and provides the seller of each product listed in the product information with the bid price to purchase. Is transmitted by e-mail (M3).

The e-mail with the bid value is also transmitted to the organizer device in order to prevent the seller from being fraudulent.

The seller device collects the e-mails transmitted from the auctioneer device and selects the e-mail with the highest price from among the e-mails (M4). Then, the result of the selection is notified to the bidder device of the bidder who is the successful bidder (M5). The bidder notifies the seller of the settlement method and performs settlement of the product (M6).

When the seller has settled the merchandise, the seller sends the merchandise to the bidder who is the successful bidder (M7), and ends the auction. The above is the outline of the present embodiment.

Next, the network auction system as described above will be described in detail. FIG. 2 is a schematic diagram showing the configuration of the network auction system according to one embodiment of the present invention. In this network auction system, a seller device 10, a sponsor device 20, and a bidder device 30 are connected via a network.

Here, the seller device 10 includes a seller registration request unit 11, a seller public key pair generation unit 12, a key information storage unit 13, a network I / F unit 14, and a bid mail reception unit 1.
5, a bid mail storage unit 16, a non-repudiation signature verification unit 17, and a successful bid determination unit 18.

The seller registration request section 11 generates a registration request information by a seller's operation and transmits it to the organizer device 20. Upon receiving a public key pair from the seller public key pair generation section 12, the seller registration request section 11 And the network I as a seller registration request, together with information input to the seller device 10 such as settlement information such as the seller's name, address, telephone number, e-mail address used in the auction, and credit number.
It has a function of transmitting to the organizer device 20 via / F14.

The seller public key pair generation unit 12 is a function of the seller application. The function of generating a public key pair used for auction, the function of storing this public key pair in the key information storage unit 13, and the function of It has a function of sending a public key pair to the seller registration request unit 11. This public key pair is a public key pair used in a digital signature scheme called a non-repudiation signature.

Here, the non-repudiation signature is used for both the encryption and the digital signature that the content of the signature of the signer can be confirmed to be surely signed by the signer without disclosing it to a third party. It has properties. It also has the property that it can be converted to a normal digital signature by a certain conversion. Such a non-repudiation signature is described in detail in "Electronic Auction Method Using a Public Bulletin Board," Miyazaki and Sakurai, IPSJ Transactions, Vol. 40, No. 8, pp. 3329-3336, 1999.

The key information storage unit 13 is a memory unit for storing a public key pair and a seller certificate.

The network I / F unit 14 is a network interface between the inside of the seller device 10 and the organizer device 20.

The bid mail receiving section 15
Has a function of receiving the bid mail transmitted from the company and storing the bid mail in the bid mail storage unit 16.

The bid mail storage section 16 is a mailbox in which a bid mail is stored by the bid mail receiving section 15.

The non-repudiation signature verification unit 17 is a function of the seller application, and uses a bidder certificate sent together with the bid information of all bid mails in the bid mail storage unit to set a predetermined low amount. Or it has a function to verify from a high price.

The successful bid deciding unit 18 is a function of the seller application. Has a function to send a decision notice indicating

The organizer device 20 includes a seller accepting unit 21, a bidder accepting unit 22, an application distributing unit 23, a public key certificate generating unit 24, and a network I / F unit 25.

The seller accepting section 21 has a function of giving a registration request received from the seller apparatus 10 to the application distribution section 23 or the public key certificate generating section 24 based on the contents.

The bidder accepting section 22 has a function of giving a registration request received from the bidder apparatus 30 to the application distribution section 23 or the public key certificate generation section 24 based on the contents of the request.

The application distribution unit 23 has a function of transmitting a seller application to the seller device 10 based on the registration request received from the seller reception unit 21 and a bidder based on the registration request received from the bidder reception unit 31. It has a function of transmitting an application to the bidder device 30.

Here, the seller application is a program for realizing the functions of the seller public key pair generation unit 12, the non-repudiation signature verification unit 17 and the successful bid determination unit 18, and may be transmitted from the organizer device 20. And HTTP
It may be possible to download from a seller device using a communication protocol such as FTP or FTP. For download,
Based on the registration request from the seller device 10, the organizer device 20 transmits a UR for downloading the seller application.
L is transmitted to the seller device 10. In this case, the seller device 10 may access the URL and download the seller application.

The bidder application is a program for realizing the functions of the bidder public key pair generation unit 32, the non-repudiation signature generation unit 35, and the bid mail generation unit 36. It may be transmitted from the device 20 or may be downloadable from the auctioneer device 30.

The public key certificate generation unit 24 creates a seller certificate based on the seller registration request received from the seller reception unit 21 and returns the seller certificate to the seller device 10 via the network I / F 25. It has a function of creating a seller certificate based on the bidder registration request received from the bidder accepting unit 22 and returning the bidder certificate to the bidder device 30 via the network I / F 25.

The network I / F unit 25 is a network interface between the host device 20 and the seller device 10 and the bidder device 30.

The bidder device 30 includes a bidder registration request unit 3
1, auctioner public key pair generation unit 32, key information storage unit 33,
Network I / F unit 34, non-repudiation signature generation unit 35,
Bid mail generator 36, bidder mail address storage 3
7 and a bid mail transmitting unit 38.

The bidder registration request unit 31 receives the public key pair from the bidder public key pair generation unit 32, and has a function of generating registration request information and transmitting the registration request information to the organizer device 20 by the operation of the bidder. The public key is used as a bidder registration request together with information entered into the bidder device 30 such as the bidder's name, address, telephone number, e-mail address used in the auction, and settlement information such as a credit number.
It has a function of transmitting to the organizer device 20 via / F34.

The bidder public key pair generation unit 32 is a function of the bidder application, and has a function of generating a public key pair to be used for an auction and a function of storing the public key pair in the key information storage unit 33. And a function of transmitting the public key pair to the bidder registration request unit 31. This public key pair is a public key pair used in a digital signature scheme called a non-repudiation signature.

The key information storage section 33 is a memory section in which a public key pair and a bidder certificate are stored.

The network I / F unit 34 is a network interface between the inside of the bidder device 30 and the organizer device 20.

The non-repudiation signature generation unit 35 is a function of the bidder application, and when bid information (eg, a bid price candidate number) or bid price is input by the bidder's operation, This bid information is signed with a signature key unique to each bidder in the key information storage unit 33 and encrypted to generate a non-repudiation signature.

The bid mail generation unit 36 is a function of the bidder application, and stores the nonrepudiation signature generated by the nonrepudiation signature generation unit 35, the public key certificate in the key information storage unit 33, and the bidder mail address. It has a function of generating bid mail by combining bid information such as bidder mail addresses in the section 37.

The bidder mail address storage section 37 is a memory section for storing bidder mail addresses.

The bid mail transmitting section 38 has a function of transmitting the bid mail generated by the bid mail generating section 36 to the seller device 10.

Next, the operation of the network auction system configured as described above will be described using the sequence diagram of FIG. 3 and the schematic diagrams of FIGS.

(Registration of Seller) The seller device 10 is shown in FIG.
The registration request information to be sent to the sponsor device 20 is generated by the seller registration request unit 11 and transmitted to the sponsor device 20 (M1-1).

When the organizer device 20 receives the registration request at the seller receiving unit 21, the application distribution unit 23
Transmits the seller application to the seller device 10 (M1-2).

When the seller device 10 obtains the seller application, the seller public key pair generation unit 12 of the seller application, as shown in FIG.
A public key pair used for an auction is generated, and the obtained public key pair is stored in the key information storage unit 13. It is preferable that the secret key (seller signature key) be protected by a password or the like in storage.

Further, the seller public key pair generation unit 12 sends the public key to the seller registration request unit 11. The seller registration requesting unit 11 transmits the public key to the organizer device 20 via the network I / F 14 as a seller registration request together with information input to the seller device 10 such as the settlement information of the seller (M1- 3). Please note that this seller registration request
It is also a request to issue a seller certificate, which is a public key certificate.

The host device 20 is connected to the network I / F 2
5. When the seller accepting unit 21 receives a seller registration request via the communication unit 5, the public key certificate generation unit 24 generates a seller certificate for the seller's public key, and sends the seller certificate to the network I.
/ F25 to the seller device 10 (M1-4).

The seller device 10 stores the seller certificate in the key information storage unit 13, and the registration of the seller ends.

Next, the seller device 10 registers the product information of the product to be sold in order to register the product to be sold.
0 is notified (M1-5). This notification may be sent by e-mail or may be sent through the HP of the host device 20. At this time, the merchandise information is data signed by the seller, and the seller certificate is transmitted together.

When the organizer device 20 receives the product information from the seller device 10, it registers the product information and transmits a product registration completion notification to the seller device 10 (M1-6). In addition,
The registered product information is sent to the bidder in an e-mail magazine hosted by the organizer.

(Registration of bidder) Similarly, bidder device 30
Is a bidder registration request unit 3 as shown in FIG.
The registration request information to be sent to the sponsor device 20 is generated in 1 and transmitted to the sponsor device 20 (M2-1).

When the bidder accepting unit 22 accepts the registration request, the organizer apparatus 20 receives the registration request.
Transmits the bidder application to the bidder device 30 (M2-2).

When the bidder device 30 obtains the bidder application, the bidder public key pair generation unit 32 of the bidder application, as shown in FIG.
Generate a public key pair to use for the auction. This public key pair is a public key pair used for a non-repudiation signature. Here, the nature of the non-repudiation signature is as described above.

The bidder public key pair generation unit 32 stores the generated public key pair in the key information storage unit 33. It is preferable that the secret key (bidder signature key) be protected by a password or the like in storage.

The bidder public key pair generation unit 32 sends the public key to the bidder registration request unit 31. The bidder registration request unit 31 transmits this public key to the host device 20 via the network I / F as a bidder registration request together with information input to the bidder device 30 such as the bidder's settlement information. (M2-3). This bidder registration request is also a request to issue a bidder certificate that is a public key certificate.

The organizer device 20 is connected to the network I / F 2
When the bidder accepting unit 22 receives a bidder registration request via the network 5, the public key certificate generation unit 24 generates a bidder certificate for the public key of the bidder, and transmits the bidder certificate to the network I.
Return to bidder device 30 via / F25 (M2-4).

The bidder device 30 stores the bidder certificate in the key information storage unit 33, and the registration of the bidder is completed. When the registration is completed, the auctioneer device 30 periodically sends the merchandise information by the mail magazine hosted by the organizer (M2-5).

(Bid) The bidder obtains information on the auction currently being held in the mail magazine periodically sent from the organizer device 20, and selects a favorite product to be placed on the auction.

In the e-mail magazine, an e-mail address of an individual seller is described for each product, and a reply e-mail can be created by selecting an e-mail address for each product. Note that a normal mail application is set similarly.

The subject (title) of the reply e-mail is, for example, Re: Mail Auction (No, ******** (auction item number)) from the viewpoint that the seller who receives the e-mail easily sorts the e-mail. According to the description, it is preferable to individualize each product.

If a setting rule for automatically storing the subject in a specific mailbox of the seller device is used, all the bid information from the bidder device 30 can be stored in this mailbox. A normal mail application also has a function of storing a mail in a mailbox in accordance with a user setting rule.

The bidder selects the e-mail address of the seller device 10 of the favorite product and creates a reply e-mail. At this time, the bidder device 30 generates a non-repudiation signature in the non-repudiation signature generation unit 35 and generates a bid mail, for example, when bid information indicating a bid price is input, as shown in a relevant part in FIG. The unit 36 generates the bid mail by combining the information such as the non-repudiation signature, the public key certificate, and the bidder's mail address, and the bid mail transmitting unit 38 transmits the bid mail to the seller device 10 and the organizer device 20. (M3).

In the seller device 10, the bid mail receiving unit 15 stores the bid mail in a specific mailbox (bid mail storage unit 16). Here, in the case of the conventional auction, the organizer needs to always launch the homepage during the auction, but in the present invention, the seller uses the e-mail and adopts the shielded bid auction method, so the seller must After the end of the auction, it is good to receive the e-mail, and the bid price can be determined from the collected e-mails.

Now, since the received bid mail has a non-repudiation signature in the bid information, it is unknown what the bid value is, except for the bidder who signed it.

Therefore, the non-repudiation signature verification unit 17 of the seller device 10 uses the bidder certificate sent together with the bid information of all the bid mails collected in the mailbox to set a predetermined low amount or We will verify from the higher amount. In addition, the seller presents a high price (auction type or shielded bid auction system) above a certain amount or a low price (auction type or shielded bid auction system) below a certain amount in advance. It is easier to verify.

Here, it is assumed that there is a bid equal to or more than a predetermined amount, and the non-repudiation signature verification unit 17 starts verification from the predetermined amount and verifies the non-repudiation signature until there is no e-mail that has bid for the corresponding amount.

Next, verification is gradually performed from a predetermined amount (for example, every 100 yen) at a lower amount. When a person who bids at the highest amount is verified, the highest bid amount is the bid value. (M4), the bidder who sent the bid mail including the bid price is the successful bidder.

The successful bid determination unit 18 determines the successful bidder's bidder device 3
In addition to returning the decision notice to 0, the decision notice indicating the successful bid for the registered product is returned to the organizer device 20 (M5).

[0091] The organizer device 20 may post the decided product information as an e-mail magazine and send it to registered bidders or sellers.

When the bidder (successful bidder) receives the decision notification, the bidder decides the settlement method of the commodity as the seller, notifies the destination of the commodity, and makes the settlement. At this time, since the settlement information such as the credit number is registered in the organizer, the settlement may be performed through the organizer.

The seller confirms the completion of the settlement and sends the product to the successful bidder (M7).

As described above, according to the present embodiment, the organizer device 20 transmits the auction merchandise information registered by the seller device 10 to the registered auctioneer device 30. In contrast, since the auctioneer does not access the homepage of the organizer, the communication cost of the user involved in the auction can be reduced, and the product that can be regularly auctioned can be known.

The bid value is signed and encrypted with a signature key unique to each bidder, and the non-repudiation signature verification unit 17 of the seller device 10 checks the highest bid value among all the bid values in the bid mail storage unit 16. Since the maximum price is determined without revealing the bid price other than the bid price of the price, the privacy of bidders other than the successful bidder can be protected.

As a supplement to privacy protection, the present invention differs from a conventional auction in that the organizer does not know all information. That is, in the present embodiment, since the mail and the seller locally determine the successful bid value using the non-repudiation signature, information on the bidder who failed to make a successful bid is less likely to leak to the organizer. Further, since the bid amount is signed with a non-repudiation, there is an advantage that information other than the successful bid value is not easily leaked.

Further, since the non-repudiation signature is used to verify the bid value in the bid mail, the auction situation can be easily seen by the seller, and the auction can be executed efficiently (unlike ordinary mail, There is no need to read the entire text and compare all the bids, and the auction ends when the highest price is reached, eliminating the need to check the bids of all the remaining emails, which is efficient. Is).

Further, since all transmissions and receptions between the seller device, the organizer device and the bidder device are performed by e-mail, it is possible to simplify the registration of sellers, transmission of information on bidders, determination of selling prices, and the like. A network auction that does not burden both parties can be realized.

Note that the network auction system described in the above-described embodiment includes a magnetic disk (floppy (registered trademark) disk, hard disk, or the like) as an individual program that can be executed by each computer of each of the devices 10, 20, and 30. , Optical disk (CD-R
OM, DVD, etc.), a magneto-optical disk (MO), and a storage medium such as a semiconductor memory. The storage medium may be in any form as long as it can store a program and can be read by a computer.

An OS (Operating System) running on the computer based on instructions of a program installed in the computer from the storage medium,
MW for database management software, network software, etc.
(Middleware) or the like may execute a part of each process for realizing the present embodiment.

Further, the storage medium in the present invention is not limited to a medium independent of a computer, but also includes a storage medium in which a program transmitted via a LAN, the Internet or the like is downloaded and stored or temporarily stored.

Further, the number of storage media is not limited to one, and the case where the processing in the present embodiment is executed from a plurality of media is also included in the storage media of the present invention, and any media configuration may be used.

The computer according to the present invention executes each processing in the present embodiment based on a program stored in a storage medium. An apparatus such as a personal computer and a plurality of apparatuses are connected to a network. Any configuration such as a system described above may be used.

The computer in the present invention is
It is not limited to a personal computer, but also includes a processing device, a microcomputer, and the like included in an information processing device, and generically refers to a device and a device capable of realizing the functions of the present invention by a program.

The present invention is not limited to the above embodiments, and can be variously modified at the stage of implementation without departing from the scope of the invention. In addition, the embodiments may be implemented in appropriate combinations as much as possible, in which case the combined effects can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriate combinations of a plurality of disclosed configuration requirements. For example, when an invention is extracted by omitting some constituent elements from all constituent elements described in the embodiment, when implementing the extracted invention, the omitted part is appropriately supplemented by well-known conventional techniques. It is something to be done.

In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[0107]

As described above, according to the present invention, it is possible to reduce the communication cost of users involved in auctions and to know products that can be regularly auctioned.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a schematic configuration of a network auction system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a network auction system in the embodiment.

FIG. 3 is a sequence diagram for explaining the operation in the embodiment;

FIG. 4 is a schematic diagram for explaining an operation in the embodiment.

FIG. 5 is a schematic diagram for explaining the operation in the embodiment.

FIG. 6 is a schematic diagram for explaining the operation in the embodiment.

FIG. 7 is a schematic diagram showing a schematic configuration of a conventional network auction system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Seller apparatus 11 ... Seller registration request part 12 ... Seller public key pair generation part 13, 33 ... Key information storage part 14, 25, 34 ... Network I / F part 15 ... Bid mail reception part 16 ... Bid mail storage part 17 ... non-repudiation signature verification section 18 ... successful bid determination section 20 ... organizer apparatus 21 ... seller reception section 22 ... bidder reception section 23 ... application distribution section 24 ... key release certificate generation section 30 ... bidder apparatus 31 ... bidder registration Requesting part 32 ... Bidder public key pair generation part 35 ... Non-repudiation signature generation part 36 ... Bid mail generation part 37 ... Bidder mail address storage part 38 ... Bid mail transmission part

Claims (7)

[Claims] 1. A network auction system using a seller device, an organizer device and a bidder device connected to each other via a network, wherein a bidder device provided in the organizer device and participating in the auction is defined in advance. A bidder registration means for registering; auction registration means provided in the seller device for transmitting merchandise information and self-address information on commodities to the organizer device; and auction registration device provided in the organizer device; Auction information transmitting means for transmitting the product information and the destination information obtained from the auction registration means to the registered bidder device; and the product provided in the bidder device and transmitted from the organizer device. And transmitting bid information including a bid price to the seller device based on the destination information. Bidding information transmitting means, bidding information storing means provided in the seller device and storing bidding information received from the bidding information transmitting means, and a highest price among all bidding values in the bidding information storing means. Selling price determining means for selecting a bidding price, and decision notification transmitting means for transmitting a determining notification to the auctioneer device and the organizer device that transmitted the bidding value selected by the selling price determining means, Network auction system. 2. A network auction method using a seller device, an organizer device, and a bidder device connected to each other via a network, wherein the organizer device previously registers bidder devices participating in the auction. The auctioneer registration step of performing, in the seller device, an auction registration step of transmitting product information about a product and its own destination information to the organizer device, and in the organizer device, the bidder registration step is performed. An auction information transmitting step of transmitting the merchandise information and the destination information obtained in the auction registration step to a bidder device; and any of the merchandise information transmitted from the organizer device by the bidding device. And transmitting bid information including a bid value to the seller device based on the destination information. A bidding information storage step in which the bidding information obtained in the bidding information transmitting step is stored in the bidding information transmitting step, the bidding information storage step being provided in the seller device; A selling price determination step of selecting a bid price; and a decision notification transmitting step of transmitting a determination notification to the auctioneer device and the organizer device that transmitted the bid price selected in the selling price determination step. Network auction method to be. 3. The network auction method according to claim 2, wherein the bid value is signed with a signature key unique to each bidder and encrypted, and the selling price determining step is stored in the bid information storing step. A network auction method, wherein the highest bid is determined without revealing a bid price other than the highest bid price among all the bid prices. 4. A computer-readable storage medium used in the seller device of a network auction system using a seller device, an organizer device, and a bidder device connected to each other via a network, wherein the seller device Auction registration means for transmitting the merchandise information relating to the merchandise and its own destination information to the organizer device; a bidding information storage means for storing bidding information received from the auctioneer device; Selling price determining means for selecting the highest bid price among the bidding prices, a bidding device transmitting the bidding price selected by the selling price determining means and a decision notification transmitting means transmitting a decision notification to the organizer device, A computer-readable storage medium storing a program for implementing the above. 5. A computer-readable storage medium used for the host device of a network auction system using a seller device, a host device, and a bidder device connected to each other via a network, wherein the host device includes: Bidder registration means for registering a bidder device participating in an auction in advance in a computer of a bidder device; auction information for transmitting merchandise information obtained from the seller device to the bidder device registered by the bidder registration means; A computer-readable storage medium storing a program for implementing transmission means, and decision notification receiving means for receiving a decision notice of a successful bid from the seller device. 6. A computer-readable storage medium used for a bidder device of a network auction system using a seller device, an organizer device, and a bidder device connected to each other via a network, wherein the bid is used. A computer of a hand device, provided in the bidder device, for specifying any of the product information transmitted from the organizer device, and transmitting bid information including a bid value to the seller device; A decision notification receiving means for receiving a decision notice of a successful bid from a seller device. A computer-readable storage medium storing a program for realizing the following. 7. The computer readable storage medium according to claim 6, wherein the bid value is signed with a signature key unique to each bidder and encrypted. .