JP2003117249A - Communication game system, method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication game system which prevents an illegal action and is advantageously used as a gamble, to provide a method, a server, an user and a program, to provide an information processing system which is advantageous when usage information is randomly distributed to each information processors in a network where a plurality of information processors exchange information via communication lines and to provide the method, the information processors and a program. SOLUTION: A server 10 is constituted of a computer and includes a server communication means 1002, a server control means 1004, a display means 1006, an input means 1008 and a game means 1010. The server communication means 1002 performs communication with respective client devices 20 via the Internet 30. The game means 1010 conducts a game and the game is realized by allowing a CPU to perform game software.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a communication game system, a communication game method, a server, a client, an information processing system, an information processing method for playing a game through communication.
The present invention relates to an information processing device and a program.

[0002]

2. Description of the Related Art In a system in which a server and a plurality of clients are connected via the Internet, a technique for playing a game between the server and each client has already been put into practical use. It is expected that gambling will be performed using such a system in the near future.

[0003]

However, in such a system for playing a game via the Internet, since the game is played in a state where the players are away from each other, data is transmitted and received during the process of exchanging information via the Internet. There is a chance to perform cheating by tampering with. Further, when playing such a game, it is required that a plurality of information processing apparatuses randomly distribute usage information to each information processing apparatus when communicating information via a communication line. The present invention has been made in view of such circumstances, and an object thereof is a communication game system and a communication game method which can prevent cheating of a player who plays a game and are advantageous when the game is played as a gambling game. , Providing servers, clients and programs. Further, the object of the present invention is to
In a configuration in which a plurality of information processing devices communicate information via a communication line, an information processing system, an information processing method, an information processing device, and an information processing device which are advantageous in randomly distributing usage information to each information processing device, To provide a program.

[0004]

According to the present invention, in order to achieve the above object, a client is assigned to each of a plurality of players, the respective clients are connected so as to communicate with each other, and information is exchanged between the respective clients. A communication game system for executing a game by executing the game, wherein the game is dealt to the player while the cards are turned down from a deck formed by turning a plurality of cards constituting a set of cards. An identification number X is assigned in advance to each of the plurality of cards, and a prime number setting means for setting a prime number w commonly used by each client and each of the clients are provided. Random number generating means for separately generating a random number a, and the random number a generated by each of the prime number w and the client. The for each of the identification number X on the basis of the 1
First table creating means for creating a first table in which the identification number X is associated with the first data U by creating data U = X ^a (mod w); and first data U of the first table. Send all of the above from each of the clients to the other clients in random order.
A second data transmission means, based on all of the first data U transmitted from the other client in each of the clients and the random number a generated in the own client
A second data V corresponding to the first data U by generating data V = U ^a (mod w)
Second table creating means for creating a table, and the second
Second data transmitting means for transmitting all of the second data V in the table from each of the clients to other clients in a random order, and thirdly creating all of the second data V in the third table When the table generation means and the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table, the table corresponding to the selected second data V. The first data U is read from the second table of another client and transmitted to the client to be distributed, and the selected second data V is deleted from the third table. Based on the first data U, the distributed client identifies the identification number X in the first table. Characterized in that it comprises a that identification number specifying means.

Further, the present invention is a communication game method in a server in which a plurality of clients are connected via a communication line, wherein the clients are assigned to a plurality of players so that the clients can communicate with each other. The game is executed by being connected and exchanging information between each client, and the game remains in a state in which the cards are turned down from the deck formed by turning down a plurality of cards that make up one set of playing cards. The identification number X is assigned in advance to each of the plurality of cards, and each of the clients separately generates a random number a, and the prime number w and the wherein each client is generated by itself a random number a and the first data for each of the identification number X on the basis of U = X a ^(mo w) to generate a first table in which the identification number X and the first data U are associated with each other, and all the first data U in the first table are randomly transmitted from each of the clients to other clients. The second data based on all of the first data U transmitted from the other clients and the random number a generated by the own client.
A second data V corresponding to the first data U by generating data V = U ^a (mod w)
A table is created and all of the second data V of the second table is transmitted from each of the clients to other clients in a random order, and all of the second data V are randomly arranged to form a third table. A third table generating step of creating a table, and when the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table, the selected second table A delivery step of reading the first data U corresponding to the data V from the second table of another client and transmitting the same to the distributed client, and deleting the selected second data V from the third table. , The distributed client based on the first data U transmitted by the distributing step There and identifies the identification number X of the first table.

Further, the present invention is a server which is connected to a plurality of clients through a communication line and exchanges information between the clients to execute a game, wherein the game includes a set of playing cards. This is done by handing out a pile of cards that are made up of a plurality of constituent cards to the player while keeping the cards face down, and an identification number X is assigned to each of the plurality of cards in advance. And is configured to include a prime number setting means for setting a prime number w commonly used by each client, a third table generating means, and a distributing means, and each client generates a random number a, First data U = X ^a (mod) for each identification number X based on the prime number w and the random number a generated by each of the clients.
w) to generate a first table in which the identification number X and the first data U are associated with each other, and all the first data U in the first table are randomly transmitted from each of the clients to other clients. Send in the order
Second data V = U ^a (m) based on all of the first data U transmitted from the other clients and the random number a generated by the own client in each of the clients.
od w) to create a second table that associates the second data V with the first data U,
All of the second data V of the second table is transmitted from each of the clients to other clients in a random order, and the distributed client transmits the first table to the first table based on the first data U transmitted by the distribution unit. Of the second data V is randomly arranged to create a third table, and the distributing means is configured to identify the identification number X of the client. When the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table, the first data U corresponding to the selected second data V is transferred to another client. Of the selected second data V while reading out from the second table of the Characterized in that it is configured to delete from the third table.

The present invention also relates to a client which is assigned to a player and which is communicably connected to a server and other clients to exchange information with other clients to execute a game. The game is played by handing out a pile of cards constituting a set of playing cards to the player with the cards face down, and each of the cards is previously The identification number X is assigned, and the identification number X is generated based on a random number generation unit that generates a random number a, a prime number w commonly used by the clients, and the random number a generated by each of the clients. first table that associates the identification number X and the first data U by generating a first data ^U = X a ^(modw) per A first table generating means for generating,
First data transmission means for transmitting all of the first data U of the first table to the other client in a random order, and all of the first data U transmitted from the other client and the own client Second table creating means for creating a second table in which the second data V and the first data U are associated with each other by generating the second data V = U ^a (mod w) based on the random number a And second data transmitting means for transmitting all of the second data V of the second table to the other client in a random order, and all of the second data V are randomly arranged to be created in the server. From the third table, the second data V is selected by the distributed client which is a client corresponding to the player to whom the card is dealt, and the selected second data V is selected. The first data U corresponding to the two data V is read from the second table of another client and transmitted to the distributed client, and the selected second data V is deleted from the third table. At this time, the first data U transmitted to the distributed client
Identification number specifying means for specifying the identification number X in the first table of the distributed client based on the above.

Further, the present invention is a server program connected to a plurality of clients via a communication line, wherein the client is assigned to each of a plurality of players, and the clients are connected to each other so that they can communicate with each other. , The game is executed by exchanging information between each client, and the game is performed with the cards face down from the deck formed by holding a plurality of cards constituting one set of cards. An identification number X is assigned in advance to each of the plurality of cards, and each client individually generates a random number a and a prime number w.
And the first data U = X ^{a for} each identification number X based on the random number a generated by each of the clients.
(Modw) is generated to create a first table in which the identification number X and the first data U are associated with each other, and all of the first data U in the first table is transferred from each of the clients to another client. Second data V = U based on all of the first data U transmitted from the other clients and the random number a generated by the own client, which are transmitted in random order.
^a (mod w) is generated to create a second table in which the second data V and the first data U are associated with each other, and all of the second data V in the second table is output from each of the clients. A third table generating step of transmitting all of the second data V in a random order to another client to create a third table, and among the clients, to the player to whom the card is dealt. The corresponding distributed client is the second data V from the third table.
Is selected, the first data U corresponding to the selected second data V is read from the second table of another client and transmitted to the distributed client, and
A delivery step of deleting the selected second data V from the third table is performed by the server.

Further, the present invention is a program of a client connected to a server via a communication line, wherein the client is assigned to each of a plurality of players, and the clients are connected to each other so that they can communicate with each other.
The game is executed by exchanging information between each client, and the game is performed by the player while the cards are turned down from a deck formed by turning down a plurality of cards forming a set of playing cards. An identification number X is assigned in advance to each of the plurality of cards, and a random number generation step of individually generating a random number a in each of the clients and a common random number in each of the clients. The first data U = X ^a (m) for each identification number X based on the prime number w used for the above and the random number a generated by each of the clients.
od w) to generate the identification number X and the first
A first table creating step of creating a first table in which data U is associated with each other, and first data for sending all of the first data U of the first table from each of the clients to other clients in random order The second data V = based on all of the first data U transmitted from the other client and the random number a generated by the own client in the transmitting step and each client.
A second table creating step of creating a second table in which the second data V and the first data U are associated with each other by creating U ^a (mod w); Second, sending everything from each of the clients to the other clients in random order
From the data transmission step and the third table created in the server by arranging all of the second data V at random, the second data V is distributed by the distributed client, which is a client corresponding to the player to whom the card is dealt. Is selected, the first data U corresponding to the selected second data V is read from the second table of another client and transmitted to the distributed client, and the selected second data V is selected. Is deleted from the third table, the first data of the distributed client based on the first data U transmitted to the distributed client.
The identification number specifying step of specifying the identification number X of the table is executed by the client.

Further, the present invention is a communication game method for a plurality of clients connected via a communication line, wherein the client is assigned to each of a plurality of players, and the respective clients are connected so that they can communicate with each other. , The game is executed by exchanging information between each client, and the game is performed with the cards face down from the deck formed by holding a plurality of cards constituting one set of cards. A random number generating step of individually generating a random number a in each of the clients, a prime number w commonly used by the clients, and the random number generated by each of the clients. First data U = X ^a (mod w) for each identification number X based on a
A first table creating step of creating a first table in which the identification number X and the first data U are associated with each other, and all of the first data U of the first table is transferred from each of the clients. A first data transmission step of transmitting the data to each client in a random order, and a second data transmission process based on all of the first data U transmitted from the other clients by each of the clients and a random number a generated by the own client Data V = U ^a (mo
a second table creating step of creating a second table in which the second data V and the first data U are associated with each other by creating d w), and all the second data V of the second table are A second data transmitting step of transmitting from each of the clients to other clients in a random order; a third table generating step of randomly arranging all of the second data V to create a third table; When the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table,
The first data U corresponding to the selected second data V is read from the second table of another client and transmitted to the distributed client, and the selected second data V is deleted from the third table. And a first data U transmitted by the distribution means.
The distributed client includes an identification number identifying step of identifying the identification number X in the first table based on the above.

The present invention is also a client which is assigned to a player, is communicatively connected to another client, and exchanges information with another client to execute a game. It is carried out by handing out a pile of cards constituting a set of playing cards to the player while the cards are lying down, and each of the plurality of cards has an identification number in advance. X is assigned and random number a
The first data U = X ^a (mod) for each identification number X based on a random number generation unit that generates a random number that is commonly used by the clients and the random number a that each of the clients itself generates. w), a first table creating means for creating a first table in which the identification number X and the first data U are associated with each other, and all of the first data U in the first table to the other client. First data transmitting means for transmitting the first data U in random order to the second data based on all of the first data U transmitted from the other client and the random number a generated by the own client.
A second data V corresponding to the first data U by generating data V = U ^a (mod w)
Second table creating means for creating a table, and the second
Second data transmitting means for transmitting all of the second data V of the table to the other client in random order, and third table generating means for randomly arranging all of the second data V to create a third table , When the distributed client, which is a client corresponding to the player to which the card is dealt, selects the second data V from the third table, the first data U corresponding to the selected second data V Is read from the second table of another client and transmitted to the distributed client, and at the same time, distribution means for deleting the selected second data V from the third table, and a first means transmitted to the distributed client. Identification configured such that the distributed client identifies the identification number X in the first table based on the data U. Characterized in that it comprises a number specifying means.

Further, the present invention is a program of a plurality of clients connected via a communication line, wherein the client is assigned to each of a plurality of players, and the clients are communicably connected to each other.
The game is executed by exchanging information between each client, and the game is performed by the player while the cards are turned down from a deck formed by turning down a plurality of cards forming a set of playing cards. An identification number X is assigned in advance to each of the plurality of cards, and a random number generation step of individually generating a random number a in each of the clients and a common random number in each of the clients. The first data U = X ^a (m) for each identification number X based on the prime number w used for the above and the random number a generated by each of the clients.
od w) to generate the identification number X and the first
A first table creating step of creating a first table in which data U is associated with each other, and first data for sending all of the first data U of the first table from each of the clients to other clients in random order The second data V = based on all of the first data U transmitted from the other client and the random number a generated by the own client in the transmitting step and each client.
A second table creating step of creating a second table in which the second data V and the first data U are associated with each other by creating U ^a (mod w); Second, sending everything from each of the clients to the other clients in random order
A data transmitting step, a third table generating step of randomly arranging all of the second data V to create a third table, and a distributed client which is a client corresponding to the player to whom the card is dealt among the clients, When the second data V is selected from the third table, the first data U corresponding to the selected second data V is read from the second table of another client and transmitted to the distributed client, and the selection is performed. And a delivery step of deleting the generated second data V from the third table, wherein the distributed client specifies the identification number X of the first table based on the first data U transmitted by the distribution step. A number specifying step is executed by the client.

Therefore, when selecting the second data V of the third table, the second data V from the third table can be selected without knowing the numbers and marks which are the contents of the card corresponding to the second data V. And deleting the specified second data V from the third table, the same situation as drawing a card from the deck can be created.

Further, the present invention is an information processing system in which a plurality of information processing apparatuses are connected via a communication line and distributes a plurality of usage information to the plurality of information processing apparatuses without duplication. Each of the information processing devices in
First storage means for storing intermediate information corresponding to each of the plurality of usage information, and storing the intermediate information corresponding to each of a plurality of selection information commonly used by all of the plurality of information processing apparatuses The second storage means, the selection means for selecting one or a plurality of selection information from the plurality of selection information, and the selection information selected by the selection means cannot be selected by the information processing device other than itself. And the intermediate information corresponding to the selection information received from the information processing device other than the self, from the second storage means, and the specified intermediate information other than the self. Means for transmitting to the information processing device, and specifying means for specifying the usage information from the first storage means based on the intermediate information received from an information processing device other than itself When the selection information is selected by the selection means, the usage information corresponding to the selection information is uniquely specified by the specification means of all information processing devices including itself. Characterize.

The present invention is also the information processing device in the information processing system, wherein a plurality of information processing devices are connected via a communication line and a plurality of usage information is distributed to the plurality of information processing devices without duplication. A storage means, a selection means, a transmission means, a selection information invalidation means, and a specification means, and the storage means stores intermediate information corresponding to each of the plurality of usage information. The intermediate information is associated with each of a plurality of pieces of selection information commonly used by all of the plurality of information processing apparatuses, and the selection unit includes one or a plurality of pieces of the plurality of pieces of selection information. The selection information invalidating unit is configured to select the selection information, and the selection information invalidating unit disables the selection information selected by the selection unit in the information processing apparatus other than itself. Is configured, the transmitting unit identifies the intermediate information corresponding to the selection information received from the information processing apparatus other than the own from said second storage means,
The specifying means is configured to transmit the specified intermediate information to an information processing device other than the self, and the specifying means is configured to transmit the usage information from the storage means based on the intermediate information received from the information processing device other than the self. When the selection information is selected by the selection means, the usage information corresponding to the selection information is uniquely specified by the identification means of all information processing devices including itself. It is characterized by being configured.

The present invention also provides an information processing method of the information processing device, wherein a plurality of information processing devices are connected via a communication line and a plurality of usage information is distributed to the plurality of information processing devices without duplication. Then, each of the plurality of information processing devices includes a first storage unit that stores intermediate information corresponding to each of the plurality of usage information, and a plurality of information processing devices that are commonly used by all of the plurality of information processing devices. A second storage unit that stores the intermediate information corresponding to each of the selection information is provided, and a selection step of selecting one or a plurality of selection information from the plurality of selection information, and a selection step performed by the selection step The first transmitting step of transmitting the selection information to all the information processing apparatuses other than oneself and the selection information selected in the selection step to the information processing apparatuses other than oneself. Selection information invalidating step of making selection impossible by specifying the intermediate information corresponding to the selection information received from an information processing device other than the self from the second storage means, and the specified intermediate information A second transmitting step of transmitting the information to an information processing apparatus other than oneself; and a specifying step of specifying the usage information from the first storage unit based on the intermediate information received from the information processing apparatus other than the own When the selection information is selected in the selection step, the usage information corresponding to the selection information is uniquely specified in the specification step of all information processing devices including itself.

The present invention is also applicable to the above information processing device in an information processing system in which a plurality of information processing devices are connected via a communication line and a plurality of usage information is distributed to the plurality of information processing devices without duplication. The information processing apparatus is provided with a storage unit that stores intermediate information corresponding to each of the plurality of usage information, and the intermediate information is stored in all of the plurality of information processing apparatuses. And a selection step of selecting one or a plurality of selection information from the plurality of selection information, and the selection information selected by the selection step. Except the transmitting step of transmitting to all the information processing devices other than the selection information selected in the selection step The selection information invalidating step for making the selection impossible, and the intermediate information corresponding to the selection information received from the information processing device other than the self is specified from the storage means, and the specified intermediate information other than the self is specified. A transmission step of transmitting the information processing apparatus to the information processing apparatus; and a specifying step of specifying the usage information from the storage unit based on the intermediate information received from an information processing apparatus other than the information processing apparatus. And

Therefore, according to the present invention, by selecting the selection information associated with the usage information and disabling the selected selection information, a plurality of usage information can be stored in each information processing device without duplication. It can be distributed. At this time, in the information processing device that selects the selection information, the correspondence relationship between the selected selection information and the usage information is invisible, and the information processing device that associates the selection information and the intermediate information is Since the correspondence with the usage information is invisible, it is possible to distribute the usage information at random when distributing the usage information.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the communication game system, method, server, client, information processing system, information processing method, information processing apparatus, and program of the present invention will be described. In the embodiments described below, it is assumed that the game played by the communication game system and the communication game method is a poker game using playing cards. The poker game is 1
The numbers and marks of the cards dealt to the player of the game, which are dealt to the players of the game from the deck formed of a plurality of cards constituting a set of playing cards in the face down state The winning and losing decisions are based on the strength of the combination of characters.

FIG. 1 is a block diagram showing a schematic structure of the communication game system. A communication game system 100 as an information processing system includes a server device 10 (server) as an information management device and a plurality of client devices 20 (20A, 20B) (clients) forming the information processing device.
And the Internet 30 (communication line) that connects the server device 10 and each client device 20 to each other, and information can be exchanged between each client device 20 via the server device 10. . Below,
In order to simplify the description, a case where the client device 20 is composed of two client devices 20A and 20B will be described.

The server device 10 is composed of a computer and comprises a server communication means 1002, a server control means 1004, a server input / output means 1006, a server storage means 1008 and the like. The server communication unit 1002 is configured to communicate with each of the client devices 20 via the Internet 30. The server control unit 1004 controls the respective units and executes a game, and is realized by the CPU executing the game software stored in the server storage unit 1008. Since the detailed processing contents of the game are not directly related to the gist of the present invention, the description thereof will be omitted, and the necessary processing contents will be briefly described in the operation description described later. The server input / output unit 1006 is
The display unit and the input unit (not shown) are provided. The display unit includes a monitor device and the like, and is configured to display an image necessary for playing a game on the screen. The input unit is composed of a mouse, a keyboard, and the like, and is configured to perform operations and information necessary for playing a game. The server storage means 1008 stores the software of the game and constitutes a third table 1010 in which the identification numbers of the cards described later are stored in a table format. Further, the server device 10 stores a server program installed in a hard disk device, which is a storage unit provided in the computer, in a CPU.
Is configured to cause each of the above means to function. The server program may be installed in the server device 10 by downloading it via the Internet, or by installing the CD-
It may be performed by reading a server program recorded in a recording medium such as a ROM via a CD-ROM drive device. Further, the server program may be preinstalled in the server device 10. Further, it goes without saying that each of the means constituting the server device 10 may be realized by hardware.

The client device 20 is composed of a computer or the like, and has client communication means 2002,
The client control means 2004, the client input means 2006, the client storage means 2008, etc. are provided. The client communication unit 2002 is configured to communicate with the server device 10 via the Internet 30. The client control means 2004 controls the respective units. The client input / output unit 2006 includes an unillustrated display unit and input unit. The display unit is composed of a monitor device and the like, and is configured to display an image necessary for playing a game, for example, an image showing numbers or marks on a card of a playing card on the screen. The input unit is composed of a mouse, a keyboard, and the like, and is configured to perform operations and information necessary for playing a game. The client storage unit 2008 stores software for operating the client control unit 2004, and also includes a first table 2010 and a second table 20 described later.
12 constitutes the first and second storage means, and corresponds to the storage means. Further, the client device 20 is configured to operate by the CPU executing a client program installed in a hard disk device which is a storage unit provided in the computer. The client program may be installed in the client device 20 by downloading it via the Internet or by using a CD-ROM.
It may be performed by reading a client program recorded in a recording medium such as the above through a CD-ROM drive device. Also, the client device 2
The server program may be pre-installed in 0. Further, it goes without saying that each of the means constituting the client device 20 may be realized by hardware.

Next, the operation when playing the game is shown in FIG.
This will be described with reference to the flowchart in FIG. In the following, a case where two players A and B play a game will be described. Player A has the client device 20A
Are assigned to the player B, and the client device 20 is assigned to player B.
B is assigned, and the players A and B operate the client devices 20A and 20B, respectively, to progress the game.

An identification number X composed of different numbers is assigned in advance to 52 cards of playing cards. The identification number X is assigned as follows, for example. In the present embodiment, the identification number X corresponds to the usage information in the claims. Diamond 1: 101, Diamond 2: 102, Diamond 3:10
3, ..., Diamond 13: 113, Heart 1: 114, Heart 2: 115, Heart 3: 118, ..., Heart 1
3: 126, Clover 1: 127, Clover 2:12
8, Clover 3: 129, ..., Clover 13:13
9, Spade 1: 140, Spade 2: 141, Spade 3: 142, ..., Spade 13: 152.

As shown in FIG. 2, each client device 2
A prime number w commonly used by 0A and 20B is set (step S10: prime number setting step, prime number setting means). The setting of the prime number w is performed by, for example, the server control means 1004 of the server device 10, and the prime number w is 1 <X <.
It is performed so that the natural number satisfies the condition of w. Next, the client control means 2 of the client device 20A
The random number a is generated in 004, and the random number b is generated in the client control unit 2004 of the client device 20b, and set as its own random number (step S12: random number setting step, random number setting unit). The client device 20A,
In 20b, the random numbers a and b are kept secret.

Next, in the client device 20A,
The first table 2010 is created (step S1).
4: First table creating step, first table creating means). That is, the client control means 2004 of the client device 20A generates the first data Ua = X ^a (mod w) for each identification number X based on the prime number w and the random number a generated by itself. The first data Ua is ^a residue number obtained when X ^a is divided by the prime number w. In the present embodiment, the first data Ua corresponds to the intermediate information in the claims. Then, the identification number X (X1, X2, X3, ...) And the first data Ua
By associating (Ua1, Ua2, Ua3, ...) With the table format, the first table 2010 is stored on the client storage means 2008 as shown in FIG.
To create.

Similarly, the first table 2010 is created in the client device 20B (step S16: first table creating step, first table creating means). That is, the client control unit 2004 of the client device 20B generates the first data Ub = X ^b (mod w) for each identification number X based on the prime number w and the random number b generated by itself. The first data Ub is the remainder number obtained when ^Xb is divided by the prime number w. In the present embodiment, the first data Ub corresponds to the intermediate information in the claims. Then, the identification number X (X1, X2, X3, ...) And the first data Ub
By associating (Ub1, Ub2, Ub3, ...) With the table format, the first table 2010 is stored in the client storage means 2008 as shown in FIG. 3 (B).
To create.

Next, the client device 20A has the first data U stored in the first table 2010.
All of a are randomly (in no particular order) the client device 20.
To B (step S18: first data transmitting step, first data transmitting means). Client device 20B
Creates the second table 2012 based on the received first data Ua as shown in FIG. 4B (step S20: second table creating step, second table creating means). That is, the client device 20B
Second data Va = Ua for each first data Ua based on the prime number w, the random number b, and the received first data Ua.
^b (modw) is generated. The second data Va is U
It is a residue number obtained when a ^b is divided by the prime number w. In the present embodiment, the second data Va corresponds to the selection information in the claims. Then, the client device 20B receives the randomly transmitted first data Ua (Ua3, Ua8, Ua5, ...) And the second data Va generated from each of the first data Ua.
By associating a (Va1, Va2, Va3, ...) With a table format, the second table 201 is stored in the client storage means 2008 as shown in FIG. 4B.
Create 2. Therefore, the first data Ua and the second data Ua
The data Va corresponds to each of the identification numbers X. Further, in this step S20, the client device 20B
Also performs an operation of randomly transmitting the second data Va of the second table 2012 to the client device 20A (second data transmitting step, second data transmitting means). The reason why the client device 20B randomly transmits the second data Va to the client device 20A will be described. In step S18, the first data Ua corresponding to the identification number X is randomly transmitted from the client device 20A to the client device 20B. Therefore, assuming that the client device 20B has transmitted the second data Va to the client device 20A in the same order as the first data Ua received from the client device 20A in step S18, the client device 20A determines that the identification number X And the second data V
There is an inconvenience that it is possible to specify the correspondence relationship with a and it becomes possible to specify the number or mark of the card from the second data Va. In order to prevent such an inconvenience, the client device 20B randomly transmits the second data Va to the client device 20A.

Next, the client device 20B has the first data U stored in the first table 2010.
All of b are randomly transmitted to the client device 20A (step S22: first data transmitting step, first data transmitting means). Based on the received first data Ub, the client device 20A, as shown in FIG.
The second table 2012 is created (step S2
4: Second table creating step, second table creating means). That is, the client device 20A uses the prime number w, the random number a, and the received first data Ub to obtain the second data Vb = Ub ^a (mod) for each of the first data Ub.
w) is generated. The second data Vb is the remainder number obtained when Ub ^a is divided by the prime number w. In the present embodiment, the second data Vb corresponds to the selection information in the claims. Then, the client device 20A
Is the first data Ub (U
b9, Ub1, Ub7, ...) and these first data U
The second data Vb (Vb1, Vb1,
Vb2, Vb3, ...) Are associated with the table format to create the second table 2012 on the client storage means 2008 as shown in FIG. Therefore, the first data Ub and the second data Vb
Corresponds to each of the identification numbers X. Furthermore, in this step S24, the second data Vb of the second table 2012
Is also randomly transmitted to the client device 20B (second data transmitting step, second data transmitting means). Note that the client device 20A is the second data Vb.
Is randomly transmitted to the client device 20B for the same reason as described above. That is, in the step S22, the first data Ub corresponding to the identification number X is randomly transmitted from the client device 20B to the client device 20A. Therefore,
The client device 2 transmits the second data Vb in the same order as the first data Ub received from the client device 20B by the client device 20A in step S22.
0B, assuming that the client device 20B
Has the inconvenience that it is possible to specify the correspondence between the identification number X and the second data Vb, and it becomes possible to specify the number or mark on the card from the second data Vb. In order to prevent such inconvenience,
The client device 20A randomly transmits the second data Vb to the client device 20B.

The second data Va, Vb stored in each of the second tables 2012 configured as described above.
Corresponds to each of the identification numbers X, and the two second data Va and Vb corresponding to one identification number X have the same numerical value. The reason why the two second data Va and Vb have the same numerical value is that the well-known Diffie-Hellman (D
The prime number w, random numbers a and b, and the first data U are based on the principle of the common key distribution method of (IFFE-HELLMAN).
This is because a, Ub and the second data Va, Vb are calculated. This will be described below using mathematical expressions. Ua = X ^a (mod w) (1) Ub = X ^b (mod w) (2) Vb = Uba ^a (mod w) (3) Va = Ua ^b (mod w) (4) Equation (4) Substituting (1), Va = Ua ^b (mod w) = X ^ab (mod w) (5) Substituting the expression (2) into the expression (3), Vb = Ub ^a (mod w) = X ^ba ( mod w) (6) That is, Va = Vb. Therefore, by identifying the identification number X, it is possible to identify the numbers and marks on the playing card, and the game can be played based on the identification number X.

Here, each client device 20A, 20
B transmits all the second data Va and Vb of the second table 2012 to the server device 10 (step S26). As shown in FIG. 5, the server device 10 configures the third table 1010 in the server storage unit 1008 based on the received second data Va and Vb which are paired with each other (step S28: third table generation step). , Third table creating means). Here, the second data Va and Vb paired with each other have the same numerical value and correspond to one identification number X.
10 is configured by randomly arranging the second data Va and Vb, which are paired with each other. Further, the server device 10 is configured such that the second data Va paired with each other are
The common index Z (Z1, Z
2, Z3, ...) Are associated with each other to form a third table 1010. The content of the third table 1010 can be confirmed by both the client devices 20A and 20B. Further, the server device 10 sets all of the common index Z to each client device 20.
A, send to 20B. As a result, the common index Z is held in each of the client devices 20A and 20B. Therefore, thereafter, each of the client devices 20A and 20B can select and read the second data Va or Vb of the third table 1010 by transmitting the common index Z to the server device 10. This completes the game preparation.

The poker game is played as follows. First, the player of the client device 20A selects one of the second data Va by drawing a card from the third table 1010, that is, selecting one of the common indexes Z (step S30: distribution step, distribution). Means, selecting step, selecting means). When the selected common index Z is Z3, the second data Va1 is selected, and the second data Va1 is transmitted from the client device 20A to the client device 20B via the server device 10. From the third table 1010, the server device 10 uses the second data Va1 and the second data Vb7 of the pair and the second data Va.
The common index Z1 of 1 and Vb7 is deleted (step S32: distribution step, distribution means, first transmission step, selection information invalidation step, selection information invalidation means).
The client device 20B receives the second data from the second table 2012 of its own client storage means 2008.
The first data Ua3 corresponding to the data Va1 is read and transmitted to the client device 20A (step S34:
Distribution step, distribution means, second transmission step, transmission means). The client device 20A reads the identification number X3 corresponding to the received first data Ua3 from the first table 2010 of its own client storage means 2008 (step S36: identification number identification step, identification number identification means, identification step, identification). means). The client control unit 2004 of the client device 20A displays the image of the card corresponding to the read number and the card number corresponding to the identification number X3 on the client input / output unit 2.
It is displayed on the display unit 006 (step S38). That is, when the player of the client device 20A selects one of the second data Va (the second data Va1 in this example) from the third table 1010, the selection information is used in all the client devices 20 including himself. Second data Va (second data Va1 in this example)
The identification number X (the identification number X3 in this example) as the usage information corresponding to is uniquely specified.

Next, the player of the client device 20B draws a card from the third table 1010, that is, selects one of the common indexes Z to select one of the second data Vb (step S4).
0: distribution step, distribution means, selection step, selection means). If the selected common index Z is Z1,
The second data Vb1 is selected, and this second data Vb1 is transmitted from the client device 20B to the client device 20A via the server device 10. The server device 1
0 indicates the second data Vb1 and the second data Va7 of the second data Vb1 and the second data Vb1 and the second data Vb1 from the third table 1010.
The common index Z3 of the data Vb1 and Va7 is deleted (step S42: distribution step, distribution means, first transmission step, selection information invalidation step, selection information invalidation means). The client device 20A reads the first data Ub9 corresponding to the received second data Vb1 from the second table 2012 of its own client storage means 2008 and transmits it to the client device 20B (step S44: distribution step, distribution means, Second transmission step, transmission means). The client device 20B receives the identification number X9 corresponding to the received first data Ub9 from the first table 2010 of its own client storage means 2008.
(Step S46: identification number identification step,
Identification number specifying means, specifying step, specifying means). The client control means 2004 of the client device 20B
The card number corresponding to the read identification number X9 and the card image corresponding to the mark are displayed on the display unit of the client input / output unit 2006 (step S4).
8). That is, the player of the client device 20B uses the second data V from the third table 1010.
If one of b (second data Vb1 in this example) is selected,
The identification number X as the usage information corresponding to the second data Vb (second data Vb1 in this example) as the selection information in all the client devices 20 including itself
(In this example, the identification number X9) is uniquely specified.

A predetermined number (for example, 5) for each player
It is determined whether or not (three) cards have been dealt (step S5).
0), if the determination result is negative, the process proceeds to step S30 and the same operation is performed. If the determination result is affirmative, the winning combination is determined by comparing the combination of the number of the card drawn by each player and the mark, and one game is ended (step S50).

As described above, according to the present embodiment, each player specifies the second data V from the third table 1010 in a state where the contents cannot be known, and the specified second data is specified. Deleting V from the third table 1010 creates the same situation as drawing a card from the deck. At this time, the numbers and marks on the card corresponding to the second data V are kept secret to each player. Therefore, in such a card game, it is possible to surely prevent the contents of the deck or the drawn cards from being tampered with or falsified, which is advantageous in suppressing fraudulent acts when the game is gambling.

According to the present embodiment, the selection information (first data V) associated with the usage information (identification number X) is selected, and the selected selection information is made unselectable. A plurality of pieces of usage information can be distributed to each information processing device without duplication. At this time, in the information processing apparatus that selects the selection information, the correspondence between the selected selection information and the usage information is invisible, and the information processing that associates the selection information with the intermediate information (second data U) is performed. The device is
Since the correspondence between the intermediate information and the usage information is invisible, it is possible to distribute the usage information at random when distributing the usage information.

In the present embodiment, the third table 1010 is configured by associating the common index Z with each of the second data Va and Vb forming a pair, and the respective client devices 20A and 20B have the above-mentioned configuration. By transmitting the common index Z to the server device 10, the third
Although the second data Va or Vb in the table 1010 is selected and read out, the values themselves of the second data Va and Vb are transmitted and received between the server device and each client device without using the common index Z. By doing so, the second data Va and Vb may be selected and read.

Further, although the case where the number of client devices is two has been described in the present embodiment, the present invention is also applicable to a configuration including three or more client devices. For example, when there are N clients, each of the client devices generates N second data V so as to go around all of the client devices for each identification number X. The identification information (second data V) corresponding to one usage information (identification number X) is uniquely determined, that is, unique.

Further, although the present embodiment has been described as having a configuration including one server device and two client devices, even in the case where the server device is not included and only two or more client devices are provided. The present invention is applicable. In this case, the third table may be provided in each client device and each client device may manage its own third table. That is, since the second data V having the same value is stored in each of the third tables, the second data V selected by a certain client device is transmitted to all the client devices, and all the client devices are The selected second data V may be deleted from each third table of its own. As a result, the second data V once selected cannot be selected again. Further, in the present embodiment, the case where the game played by the communication game system and the communication game method is a poker game played by using playing cards has been exemplified, but the present invention is applicable to various card games.

[0040]

As described above, according to the present invention, it is possible to prevent a player who plays a game from cheating.
This is advantageous when playing the game as a gambling game. Further, according to the present invention, in a configuration in which a plurality of information processing devices communicate information via a communication line, it is advantageous in randomly distributing usage information to each information processing device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a server device and a client device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing operations of a server device and a client device according to the embodiment of the present invention.

3A is an explanatory diagram of a first table of a client device 20A, and FIG. 3B is an explanatory diagram of a first table of a client device 20B.

4A is an explanatory diagram of a second table of the client device 20A, and FIG. 4B is an explanatory diagram of a second table of the client device 20B.

FIG. 5 is an explanatory diagram of a third table.

[Explanation of symbols]

100 ... communication game system, 10 ... server device,
1010 ... Third table, 20A, 20B ... Client device, 2010 ... First table, 2012 ...
Second table.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI Theme Coat (reference) G06F 17/60 512 G06F 17/60 512 (72) Inventor Takeshi Funabashi 6-7 Kitashinagawa, Shinagawa-ku, Tokyo No. 35 Sony Corporation F-term (reference) 2C001 AA13 BA02 BA06 BD04 CA01 CB01 CB04 CB06 CB08 CC02

Claims (26)

[Claims] 1. A communication game system in which a client is assigned to each of a plurality of players, the clients are communicably connected to each other, and information is exchanged between the clients to execute a game. Is performed by handing out to a player from a deck formed of a plurality of cards constituting a set of playing cards in a face-down state to the player with the cards face down. Is assigned an identification number X in advance, a prime number setting means for setting a prime number w commonly used by the clients, a random number generation means for separately generating a random number a in each of the clients, and the prime number w And the first data U = X for each identification number X based on the random number a generated by each of the clients. first table creating means for creating a first table in which ^a (mod w) is associated with the identification number X and the first data U; and all the first data U of the first table First data transmission means for transmitting from each client to other clients in random order, all of the first data U transmitted from the other clients in each of the clients, and a random number a generated by the own client 2nd data V = U ^a (m
od w) to generate a second table in which the second data V and the first data U are associated with each other; and all of the second data V in the second table Second data transmitting means for transmitting from each of the clients to other clients in a random order; third table generating means for arranging all of the second data V at random to create a third table; When the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table, the first data U corresponding to the selected second data V is transferred to another client's first. 2 It is read from the table and sent to the distributed client, and the selected second
Distribution means for deleting the data V from the third table, and the distributed client based on the first data U transmitted by the distribution means, the distributed client identifies the identification number X of the first table.
An identification number specifying means for specifying a communication game system. 2. A communication game method in a server in which a plurality of clients are connected via a communication line, wherein the client is assigned to each of a plurality of players, and each of the clients is connected to be communicable with each other. The game is executed by exchanging information between the clients, and the game is executed by the player while the cards are turned down from a deck formed by turning down a plurality of cards constituting a set of playing cards. The identification number X is assigned in advance to each of the plurality of cards, and each client individually generates a random number a, and the prime number w and the client are respectively generated. generating a first data ^U = X a (mod w) for each said identification number X on the basis of said random number a generated himself A first table in which the identification number X and the first data U are associated with each other, and all of the first data U in the first table are transmitted from each of the clients to other clients in a random order. Then, each of the clients receives the second data based on all of the first data U transmitted from the other client and the random number a generated by the own client.
A second data V corresponding to the first data U by generating data V = U ^a (mod w)
A table is created and all of the second data V of the second table is transmitted from each of the clients to other clients in a random order. All of the second data V are arranged at random in a third table. A third table generating step of creating a table, and when the distributed client, which is a client corresponding to the player to which the card is dealt, selects the second data V from the third table, the selected second table The first data U corresponding to the data V is read from the second table of another client and transmitted to the distributed client, and the selected second data U
A delivery step of deleting the data V from the third table, wherein the distributed client identifies the identification number X of the first table based on the first data U transmitted by the distribution step. Communication game method to do. 3. A server which is connected to a plurality of clients via a communication line and exchanges information between each of the clients to execute a game, wherein the game comprises a plurality of cards constituting a set of playing cards. It is carried out by handing out to the player from the deck formed with the cards turned down, the identification number X is assigned to each of the plurality of cards in advance. The client is configured to include a prime number setting unit that sets a prime number w commonly used by the clients, a third table generation unit, and a distribution unit, and each client generates a random number a and sets the prime number w The random number a generated by each of the clients
The first data U = X for each identification number X based on
^The identification number X by generating ^a (mod w)
And a first table in which the first data U is associated with each other,
All of the first data U of the first table are transmitted from each of the clients to other clients in a random order, and each of the clients includes all of the first data U transmitted from the other clients. The second data V based on the random number a generated by the client
= U ^a (mod w) is generated to create a second table in which the second data V and the first data U are associated with each other, and all of the second data V in the second table is stored in the client. Each of them is transmitted to other clients in a random order, and the distributed client makes the first distribution based on the first data U transmitted by the distribution means.
The third table generation unit is configured to randomly arrange all of the second data V to create a third table, and the distribution unit is configured to identify the identification number X of the table. When the distributed client, which is a client corresponding to the player to which the card is dealt, selects the second data V from the third table, the first data U corresponding to the selected second data V is replaced with another data. A server configured to read out from a second table of a client and send to the distributed client, and delete the selected second data V from the third table. 4. The first data U = X ^a (mod w)
Is ^a remainder number obtained when X ^a is divided by the prime number w, and the second data V = U ^a (mod w) is ^a remainder number obtained when U ^a is divided by the prime number w. The server according to claim 3, wherein: 5. The server according to claim 3, wherein the identification number X is a natural number that satisfies 1 <X <w. 6. The server according to claim 3, wherein the first and second tables are provided in each of the plurality of clients. 7. The server according to claim 3, wherein the respective clients are connected via a server, and the third table is provided in the server. 8. The server according to claim 3, wherein the game is to win or lose based on the strength of a combination of numbers and marks of the cards dealt to the player. 9. A client which is assigned to a player and which is communicably connected to a server and another client to exchange information with another client to execute a game, wherein the game is 1 It is carried out by handing out to a player from a deck formed of a plurality of cards constituting a set of playing cards in an unfolded state, and the identification number X is previously given to each of the plurality of cards. A first random number for each identification number X based on a random number generation unit that is assigned and generates a random number a, a prime number w commonly used by each client, and the random number a generated by each of the clients. Data U = X ^a (mod
w) generating a first table in which the identification number X and the first data U are associated with each other, and all the first data U of the first table to the other client First data transmitting means for transmitting to the user in a random order, and the first data U transmitted from the other client.
To generate a second data V = U ^a (mod w) based on all of the above and the random number a generated by the own client, thereby creating a second table in which the second data V and the first data U are associated with each other. Second table creating means for creating, second data transmitting means for sending all the second data V of the second table to the other clients in a random order, and randomly arranging all of the second data V As a result, the second data V is selected from the third table created in the server by the distributed client, which is the client corresponding to the player to whom the card is dealt, and the second data V corresponding to the selected second data V is selected. 1 data U is read from the second table of another client and transmitted to the distributed client, and the selected second data V is 3 identification number specifying means for specifying the identification number X in the first table of the distributed client based on the first data U transmitted to the distributed client when deleted from the table. And the client. 10. The first data U = X ^a (mod
w) is ^a residue number obtained when X ^a is divided by the prime number w, and the second data V = U ^a (mod w) is U ^a
10. The client according to claim 9, wherein the client is a residue number obtained by dividing by by the prime number w. 11. The client according to claim 9, wherein the identification number X is a natural number that satisfies 1 <X <w. 12. The client according to claim 9, wherein the first and second tables are provided in each of the plurality of clients. 13. The client according to claim 9, wherein the respective clients are connected via a server, and the third table is provided in the server. 14. The client according to claim 9, wherein the game is to win or lose based on the strength of a combination of numbers and marks of the cards dealt to the player. 15. A program of a server connected to a plurality of clients via a communication line, wherein the client is assigned to each of a plurality of players, the clients are connected to each other so that they can communicate with each other, and The game is executed by exchanging information with the player, and the game is dealt to the player while the cards are turned down from a deck formed by turning down a plurality of cards constituting a set of playing cards. The identification number X is assigned in advance to each of the plurality of cards, and each of the clients individually generates a random number a, and each of the prime number w and the client itself generates the random number a. generating a first data ^U = X a (mod w) on the basis identification number X on the basis of the the said random number a A first table in which the identification number X and the first data U are associated with each other, and all of the first data U of the first table are transmitted from each of the clients to other clients in a random order, A second number based on all of the first data U transmitted from the other client and the random number a generated by the own client in each of the clients.
A second data V corresponding to the first data U by generating data V = U ^a (mod w)
A table is created and all of the second data V of the second table is transmitted from each of the clients to other clients in a random order. All of the second data V are arranged at random in a third table. A third table generating step of creating a table, and when the distributed client, which is a client corresponding to the player to which the card is dealt, selects the second data V from the third table, the selected second table The first data U corresponding to the data V is read from the second table of another client and transmitted to the distributed client, and the selected second data U
A delivery program for deleting the data V from the third table, and a server program for causing the server to execute the delivery step. 16. A program of a client connected to a server via a communication line, wherein the client is assigned to each of a plurality of players, the clients are connected to be communicable with each other, and information is communicated between the clients. The game is executed by giving and receiving the cards, and the game is performed by handing the cards to the player in a face down state from a deck made up of a plurality of cards constituting a set of playing cards. An identification number X is assigned in advance to each of the plurality of cards, a random number generation step of individually generating a random number a in each of the clients, and a prime number commonly used in each of the clients. For each identification number X based on w and the random number a generated by each of the clients 1 data ^U = X a (mod
w) generating a first table in which the identification number X and the first data U are associated with each other, and generating all the first data U of the first table in each of the clients. From the first data transmission step of transmitting from the other client in random order to the other client, based on all of the first data U transmitted from the other client in each of the clients and the random number a generated by the own client. Second data V = U ^a (m
od w) to generate a second table in which the second data V and the first data U are associated with each other, and all the second data V in the second table are stored in the second table. The cards are dealt from a second data transmission step of transmitting from each client to other clients in a random order, and a third table created in the server by randomly arranging all of the second data V. The second data V is selected by the client to be distributed, which is a client corresponding to the player, and the first data U corresponding to the selected second data V is read from the second table of the other client and the second data V is read. When the selected second data V is transmitted to the distribution client and is deleted from the third table, the distribution target Client program instructs the identification number specifying step of specifying the identification number X of a first table of 該被 distribution client based on the first data U to the client, not to the said client. 17. A communication game method for a plurality of clients connected via a communication line, wherein the client is assigned to each of a plurality of players, the clients are connected to each other so that they can communicate with each other, and The game is executed by exchanging information with the player, and the game is dealt to the player while the cards are turned down from a deck formed by turning down a plurality of cards constituting a set of playing cards. Based on a random number generation step of individually generating a random number a in each of the clients, and a prime number w commonly used by the clients and the random number a generated by each of the clients. The first data U = X ^a (mod
w) generating a first table in which the identification number X and the first data U are associated with each other, and generating all the first data U of the first table in each of the clients. From the first data transmission step of transmitting from the other client in random order to the other client, based on all of the first data U transmitted from the other client in each of the clients and the random number a generated by the own client. Second data V = U ^a (m
od w) to generate a second table in which the second data V and the first data U are associated with each other; and all the second data V in the second table are A second data transmitting step of transmitting from each of the clients to other clients in a random order; a third table generating step of randomly arranging all of the second data V to create a third table; When the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table, the first data U corresponding to the selected second data V is transferred to another client's first. 2 It is read from the table and sent to the distributed client, and the selected second
A distribution step of deleting the data V from the third table, and the distributed client based on the first data U transmitted by the distribution means, the distributed client identifies the identification number X of the first table.
And a step of identifying an identification number for identifying the communication game method. 18. A client which is assigned to a player and which is communicatively connected to another client and exchanges information with another client to execute a game, the game comprising a set of It is performed by handing out to a player from a deck formed with a plurality of cards constituting a playing card face down, and an identification number X is assigned to each of the plurality of cards in advance. The first data U for each identification number X based on a random number generation unit that generates a random number a, a prime number w commonly used by the clients, and the random number a generated by each of the clients. = X ^a (mod
w) generating a first table in which the identification number X and the first data U are associated with each other, and all the first data U of the first table to the other client First data transmitting means for transmitting to the user in a random order, and the first data U transmitted from the other client.
To generate a second data V = U ^a (mod w) based on all of the above and the random number a generated by the own client, thereby creating a second table that associates the second data V with the first data U. Second table creating means for creating, second data transmitting means for sending all of the second data V of the second table to the other client in random order, and all of the second data V are arranged at random. The third table generating means for creating a third table, and the distributed client, which is a client corresponding to the player to which the card is dealt among the clients, selects the second data V from the third table. When the first data U corresponding to the second data V is read from the second table of another client and transmitted to the distributed client. To, the said selected 2
Distribution means for deleting the data V from the third table, and an identification configured so that the distributed client specifies the identification number X of the first table based on the first data U sent to the distributed client. A client comprising: a number identifying means; 19. A program of a plurality of clients connected via a communication line, wherein the client is assigned to each of a plurality of players, the clients are connected so as to be able to communicate with each other, and information is transmitted between the clients. The game is executed by giving and receiving the cards, and the game is performed by handing the cards to the player in the face-down state from a deck formed of a plurality of cards constituting one set of cards. An identification number X is assigned in advance to each of the plurality of cards, a random number generation step of separately generating a random number a in each of the clients, and a prime number commonly used in each of the clients. w for each identification number X based on w and the random number a generated by each of the clients. Data ^U = X a (mod
w) generating a first table in which the identification number X and the first data U are associated with each other, and generating all the first data U of the first table in each of the clients. From the first data transmission step of transmitting from the other client in random order to the other client, based on all of the first data U transmitted from the other client in each of the clients and the random number a generated by the own client. Second data V = U ^a (m
od w) to generate a second table in which the second data V and the first data U are associated with each other; and all the second data V in the second table are A second data transmitting step of transmitting from each of the clients to other clients in a random order; a third table generating step of randomly arranging all of the second data V to create a third table; When the distributed client, which is a client corresponding to the player to whom the card is dealt, selects the second data V from the third table, the first data U corresponding to the selected second data V is transferred to another client's first. 2 It is read from the table and sent to the distributed client, and the selected second
A delivery step of deleting the data V from the third table, and an identification number identification step in which the distributed client identifies the identification number X of the first table based on the first data U transmitted by the distribution step. A client program to be executed by the client. 20. An information processing system, wherein a plurality of information processing devices are connected via a communication line and distributes a plurality of usage information to said plurality of information processing devices without duplication, said plurality of information processing devices Each of the first storage means that stores intermediate information corresponding to each of the plurality of usage information, and the plurality of selection information that is commonly used in all of the plurality of information processing devices. Second storage means for storing intermediate information, selection means for selecting one or a plurality of selection information from the plurality of selection information, and the selection information selected by the selection means for the information processing other than itself The selection information invalidating unit that makes the device unselectable, and the intermediate information corresponding to the selection information received from the information processing device other than the self are specified from the second storage unit. Determining means and transmitting means for transmitting the specified intermediate information to the information processing apparatus other than the self, and the usage information from the first storage means based on the intermediate information received from the information processing apparatus other than the self. When the selection information is selected by the selection means, the usage information corresponding to the selection information is uniquely specified by the identification means of all information processing devices including itself. An information processing system characterized by being configured. 21. The information processing device in an information processing system, wherein a plurality of information processing devices are connected via a communication line and distributes a plurality of usage information to the plurality of information processing devices without duplication, the storage means. A selection unit, a transmission unit, a selection information invalidation unit, and an identification unit, wherein the storage unit is configured to store intermediate information corresponding to each of the plurality of usage information, The intermediate information is associated with each of a plurality of selection information commonly used by all of the plurality of information processing apparatuses, and the selection unit selects one or a plurality of selection information from the plurality of selection information. The selection information invalidating unit is configured to make the selection information selected by the selection unit unselectable in the information processing device other than itself. The transmitting means specifies the intermediate information corresponding to the selection information received from an information processing apparatus other than the self from the second storage means, and the specified intermediate information is an information processing apparatus other than the self. The specifying unit is configured to specify the usage information from the storage unit based on the intermediate information received from an information processing device other than the information processing device, the selecting unit, If the selection information is selected,
The information processing apparatus is configured such that the usage information corresponding to the selection information is uniquely specified by the specifying means of all the information processing apparatuses including oneself. 22. The information processing apparatus according to claim 21, wherein the intermediate information is different for each of the plurality of information processing apparatuses. 23. The information management device further comprises an information management device connected to each of the information processing devices via a communication line, and the information management device comprises storage means for storing the selection information. The information processing device described. 24. Each of the plurality of information processing devices has a random number generation unit that generates a first random number and a second random number, and the intermediate information is generated based on the usage information and the first random number. And the selection information is configured to be generated based on the intermediate information and the second random number, and the selection information is based on the usage information regardless of the first random number and the second random number. The information processing apparatus according to claim 21, wherein the information processing apparatus is defined. 25. An information processing method of the information processing device, wherein a plurality of information processing devices are connected via a communication line and distributes a plurality of usage information to the plurality of information processing devices without duplication, A first storage unit that stores intermediate information corresponding to each of the plurality of usage information, and a plurality of selection information that is commonly used by all of the plurality of information processing devices. A second storage unit for storing the intermediate information corresponding to the selection information, the selection step of selecting one or more selection information from the plurality of selection information, and the selection information selected by the selection step. The first transmission step of transmitting to all information processing devices other than oneself, and the selection information selected in the selection step is not selected in the information processing device other than oneself. And a step of invalidating the selected information, the intermediate information corresponding to the selected information received from the information processing apparatus other than the self is specified from the second storage unit, and the specified intermediate information other than the self is specified. A second transmitting step of transmitting the information to the information processing apparatus; and a specifying step of specifying the usage information from the first storage unit based on the intermediate information received from an information processing apparatus other than itself, the selection When the selection information is selected by the step, the usage information corresponding to the selection information is uniquely specified by the specifying step of all the information processing devices including itself, the information processing method. 26. A program to be executed by the information processing device in an information processing system, wherein a plurality of information processing devices are connected via a communication line, and a plurality of usage information is distributed to the plurality of information processing devices without duplication. The information processing apparatus is provided with a storage unit that stores intermediate information corresponding to each of the plurality of usage information, and the intermediate information is commonly used by all of the plurality of information processing apparatuses. A selection step configured to be associated with each of a plurality of selection information, and selecting one or a plurality of selection information from the plurality of selection information; and the selection information selected by the selection step, other than itself A transmission step of transmitting to all of the devices, and the selection information selected in the selection step is selected by the information processing device other than itself. An enabling selection information invalidating step, specifying the intermediate information corresponding to the selection information received from the information processing device other than the one from the storage means, and processing the specified intermediate information other than the one An information processing for causing the information processing apparatus to execute a transmission step of transmitting the usage information to the apparatus, a specifying step of specifying the usage information from the storage unit based on the intermediate information received from an information processing apparatus other than the information processing apparatus Program for device.