KR102109201B1 - Network server mediating game item transaction between user terminals and method of operating thereof - Google Patents

Abstract

The network server according to an embodiment of the present invention is connected to a communicator and a communicator, and includes at least one processor that transmits and receives data to and from a blockchain node that at least partially stores a blockchain through the communicator. The at least one processor receives the first message from the first user terminal requesting sale of the game item, provides access to the game item to the second user terminal when the game item is valid, and the second user A transaction that receives a second message requesting purchase of a game item from the terminal and processes transaction information for changing the ownership of the game item based on the second message using a peer private key associated with the blockchain and processed transaction It is configured to update the blockchain by sending information to the blockchain node.

Description

NETWORK SERVER MEDIATING GAME ITEM TRANSACTION BETWEEN USER TERMINALS AND METHOD OF OPERATING THEREOF} NETWORK SERVER MEDIATING GAME ITEM TRANSACTION BETWEEN USER TERMINALS AND METHOD OF OPERATING THEREOF

The present invention relates to a network system, and more particularly, to a network server for mediating game item transactions between user terminals and a method of operating the same.

Recently, due to the development of data communication networks, many people use the Internet, and various types of services using the Internet, such as messengers, shopping malls, games, and the like, have been provided with the increase of Internet use. The game service is evolving from an offline method on a personal computer, and is developing as an online game that allows users to access and enjoy a game server through the Internet including a mobile communication network. I use a game service

The game service provides various types of game items to the user in order to increase interest in the game. The game service may provide game items to users for free or for free, and users may also trade each other's game items. Accordingly, there is an increasing demand for a service that brokers item transactions between users. In addition, since each game service provides different game items, when users want to trade game items in different game services to each other, there is a difficulty in item trading.

The above description is only to assist in understanding the background of the technical ideas of the present invention, and therefore it cannot be understood as the content corresponding to the prior art known to those skilled in the art of the present invention.

Embodiments of the present invention are for mediating game item transactions between users so as to reduce the network traffic required when user terminals access the game server for game item transactions and allow network resources to be used efficiently.

A network server for mediating game item transactions between user terminals according to an embodiment of the present invention includes a communicator; And at least one processor that is connected to the communicator and transmits and receives data to and from a blockchain node that stores at least partially a blockchain through the communicator, wherein the at least one processor requests sales of game items. Receiving a first message from a first user terminal; Provide access to the game item to the second user terminal when the game item is valid; Receiving a second message requesting the purchase of the game item from the second user terminal; Based on the second message, transaction information for changing the ownership of the game item is processed using a peer private key associated with the blockchain, and the processed transaction information is transmitted to the blockchain node to block the block. It is configured to update the chain.

The network server further includes a storage medium connected to the at least one processor and configured to store the peer private key, wherein the at least one processor performs a digital signature associated with the transaction information using the peer private key. By doing so, it can be further configured to generate the processed transaction information.

The at least one processor may be further configured to provide a peer public key corresponding to the peer private key to the blockchain node.

When the game item is valid, the at least one processor processes the information of the game item using the peer private key to generate a third message, and sends the third message to the blockchain node to It may be further configured to update the blockchain to include information of a game item.

The first message may include a digital signature using a first user private key associated with the first user terminal, and the at least one processor may include the digital signature using the first user private key in the third message. have.

The at least one processor may be further configured to store a first user private key associated with the first user terminal in a database, and generate a digital signature using the first user private key when the game item is valid.

The at least one processor processes the information of the game item using the peer private key to generate a third message, and transmits the third message to the blockchain node to include the information of the game item Further configured to update the blockchain, the at least one processor may include the digital signature using the first user private key in the third message.

The at least one processor may be configured to store the information of the game item in a database associated with the network server and accessible by the second user terminal.

The second message includes a digital signature using a second user private key associated with the second user terminal, and the at least one processor is configured to store the digital signature using the second user private key with the processed transaction information. Together, it can be further configured to transmit to the blockchain node.

The at least one processor stores a second user private key associated with the second user terminal in a database, performs a digital signature using the second user private key, and the digital signature using the second user private key It can be further configured to transmit the processed transaction information to the blockchain node.

The transaction information may include information for changing the game item to be associated with the second user terminal, and information for changing the digital currency associated with the second user terminal to be associated with the first user terminal.

The at least one processor may be further configured to transmit a third message to the game server informing that the blockchain has been updated according to a feedback signal corresponding to the transmission of the processed transaction information.

Another aspect of the present invention relates to a method of operating a network server that mediates game item transactions between user terminals. The network server transmits and receives data to and from a blockchain node storing at least partially a blockchain, the method comprising: receiving a first message from a first user terminal requesting sale of a game item; Providing access to information of the game item to a second user terminal when the game item is valid; Receiving a second message requesting the purchase of the game item from the second user terminal; Based on the second message, processing transaction information for changing the ownership of the game item using a peer private key associated with the blockchain; And transmitting the processed transaction information to the blockchain node.

The processing may include generating the processed transaction information by performing a digital signature associated with the transaction information using the peer private key.

The method may further include providing a peer public key corresponding to the peer private key to the blockchain node.

The method includes generating a third message by processing information of the game item using the peer private key when the game item is valid; And sending the third message to the blockchain node to update the blockchain to include information of the game item.

Embodiments of the present invention can mediate game item transactions between users so as to reduce network traffic required when user terminals access the game server for game item transactions and allow network resources to be used efficiently.

1 is a block diagram showing a network system for brokering game item transactions between first and second user terminals.
2 is a diagram conceptually showing game items of a specific game ID managed by a game server.
3 is a diagram conceptually showing a blockchain stored in the blockchain node of FIG. 1.
4 is a diagram conceptually showing a configuration of any one of the data blocks of FIG. 3.
5 is a flowchart illustrating a method of processing a first message requesting sale of a game item from an item brokerage server according to an embodiment of the present invention.
6 is a flowchart illustrating a method of processing a second message requesting the purchase of a game item in an item mediation server according to an embodiment of the present invention.
7 is a flowchart illustrating an embodiment of a method of processing a first message requesting sale of a game item.
8 is a flowchart illustrating an embodiment of a method of processing a second message requesting purchase of a game item.
9 is a block diagram illustrating an exemplary computer device suitable for the item mediation server shown in FIG. 1.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention are described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention. In addition, the present invention is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments described herein are provided to explain in detail that the technical spirit of the present invention can be easily implemented to a person having ordinary knowledge in the technical field to which the present invention pertains.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another element in between. . The terminology used herein is for describing specific embodiments and is not intended to limit the present invention. Throughout the specification, when a part “includes” a certain component, this means that other components may be further included rather than excluding other components unless specifically stated to the contrary. "At least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" are one of X, one of Y, one of Z, or two of X, Y, and Z, or Any further combination (eg, XYZ, XYY, YZ, ZZ) can be interpreted. Here, “and / or” includes all combinations of one or more of the configurations.

1 is a block diagram showing a network system for brokering game item transactions between first and second user terminals. 2 is a diagram conceptually showing game items of a specific game ID managed by a game server.

Referring to FIG. 1, the network system 100 includes a network 105, a game server 110, a digital currency transaction server 120, a first user terminal 130, a second user terminal 140, and an item mediation server. 150, and blockchain nodes 160. The network system 100 may include a plurality of devices, servers, and / or software configurations that operate to perform various methods according to embodiments of the invention described herein. The devices and / or servers shown in FIG. 1 can be configured in different ways, and the operations and services provided by the devices and / or servers can be combined or separated for the embodiments described herein. And may be performed by more or fewer devices and / or servers. One or more devices and / or servers may be run and / or maintained by the same or different enterprises.

The network 105 includes a game server 110, a digital currency transaction server 120, a first user terminal 130, a second user terminal 140, an item mediation server 150, and blockchain nodes 160. Connect various components in the network system 100 such as. The network 105 may include at least one of a public network, at least one private network, a wired network, a wireless network, other suitable types of networks, and combinations thereof. Each of the game server 110, the digital currency transaction server 120, the first user terminal 130, the second user terminal 140, the item mediation server 150, and the blockchain nodes 160 each has a wired communication function. And it may include at least one of a wireless communication function, it is possible to communicate with each other through the network 105 accordingly.

The game server 110 communicates with user terminals 130 and 140 in the network system 100 to provide an online game service. The first and second user terminals 130 and 140 may respectively register a first game ID associated with the first user and a second game ID associated with the second user to the game service. Thereafter, the first and second user terminals 130 and 140 may perform operations required in the game service so that the first and second users can play the game through the first and second game IDs.

The game server 110 includes various game items used in the game service, for example, virtual characters, emojis, properties of virtual characters, virtual characters, power levels, and scores ( Alternatively, items used for credit), items for advantageously playing the game, and the like may be provided. The game server 110 may store and manage information about game items of each game ID so as to provide game items to the game ID and use game items while the game ID uses the game service. Referring to FIG. 2, game items ITM1 to ITMm of each game ID GMID are listed in the item list LST_GMID (m is a positive integer). Each game item may be defined by an item ID for identifying a game item, a quantity of the corresponding game item, and the like. In FIG. 2, the first game item (ITM1) includes a first item ID (ITM_ID1) and a first quantity (QNT1), and the second game item (ITM2) is a second item ID (ITM_ID2) and a second quantity ( QNT2), and the mth game item (ITMm) is shown to include the mth item ID (ITM_IDm) and the mth quantity (QNTm). Of course, various methods can be used for organizing and storing game items in computer memory.

Referring back to FIG. 1, the game server 110 may access a blockchain by communicating with at least one 161 of the blockchain nodes 160. Blockchain nodes 160 may share a connection bundle of data blocks included in the blockchain. That is, each of the blockchain nodes 160 may store at least a part of a blockchain or a block chain, which is information commonly known to all nodes 160. Each of the blockchain nodes 160 may communicate with each other to store the same blockchain including the same data blocks. Blockchain nodes 160 may be configured to store the blockchain, create and propagate a new data block, and include the new data block in the blockchain to update the blockchain. At least one of the blockchain nodes 160 (161, hereinafter a blockchain node) communicates with the game server 110, the digital currency transaction server 120, and the item brokerage server 150, and at least a part of the blockchain, For example, you can store recently updated data blocks in the blockchain.

The game server 110 may receive the transaction information of the game item reflected in the blockchain, and change the ownership of the game item according to the received transaction information. For example, when transaction information for changing ownership of a game item from a first game ID to a second game ID is stored (or reflected) in the blockchain, the game server 110 retrieves the game item from the first game ID It is possible to update its database, for example, the item list LST_GMID shown in FIG. 2 to belong to the second game ID.

The digital currency transaction server 120 may store digital currency associated with each user terminal in a blockchain. Each of the first and second user terminals 130 and 140 may access the digital currency transaction server 120 to purchase digital currency, wherein the digital currency transaction server 120 blocks the digital currency associated with the user terminal. Can be stored in the chain.

Each of the first and second user terminals 130, 140 includes one or more processors, memories, and other suitable components for executing computer programs including instructions stored on a computer readable medium. In this way, application applications for accessing and using the game service of the game server 110, the digital currency transaction service of the digital currency transaction server 120, and the item transaction mediation service of the item brokerage server 150 may be executed.

As an embodiment, each of the first and second user terminals 130 and 140 is a computer, an Ultra Mobile PC (UMPC), a workstation, a net-book, a PDA (Personal Digital Assistants), and a portable computer. Information such as, web tablet, wireless phone, mobile phone, smart phone, e-book, portable multimedia player (PMP), portable game machine, etc. It may include a device that can transmit and receive in a wired and / or wireless environment.

The item mediation server 150 communicates with the game server 110 and the blockchain node 161 to mediate game item transactions between the first and second user terminals 130 and 140. The item mediation server 150 is a game between the first game ID associated with the first user terminal 130 and the identification data associated with the second user terminal 140 (eg, the second game ID or coupon ID). You can broker an item transaction. Each of the first and second user terminals 130 and 140 may access the item mediation server 150 and transmit a message including information related to the game item. The message may request various types of actions related to the game item, such as sales and purchases. At this time, the item mediation server 150 processes requests of messages transmitted from the first and second user terminals 130 and 140 based on the communication with the game server 110 and the blockchain node 161. Can be.

The item mediation server 150 includes a game server interface (151), a block chain interface (152), an item mediator (153, item mediator), and a peer private key (154, peer private key). It may include. The item mediation server 150 is configured to execute computer programs including instructions stored in a computer-readable medium to implement the game server interface 151, the block chain interface 152, and the item mediator 153. It may include one or more processors, memories, and other suitable components.

The game server interface 151 interfaces between the item intermediary 153 and the game server 110. The game server interface 151 may transmit the request signal generated by the item intermediary 153 to the game server 110 and receive a feedback signal corresponding to the request signal transmitted from the game server 110.

The blockchain interface 152 interfaces the item intermediary 153 and the blockchain node 161. The blockchain interface 152 may access the blockchain stored in the blockchain node 161 in response to the control of the item intermediary 153, and receive at least a portion of the data of the blockchain. The blockchain interface 152 transmits information related to the game item, for example, transaction information for changing the ownership of the game item, to the blockchain node 161 in response to the control of the item intermediary 153 to block the blockchain. You can reflect the transaction information.

The item intermediary 153 communicates with the game server 110 through the game server interface 151 and with the blockchain node 161 through the blockchain interface 152, so that the first and second user terminals ( 130, 140).

Hereinafter, for convenience of description, it is assumed that the first user terminal 130 transmits a message requesting the sale of the game item, and the second user terminal 140 transmits a message requesting the purchase of the game item.

The item intermediary 153 updates the blockchain by transmitting the information of the game item to the blockchain node 161 when a message requesting sale of the game item is received from the first user terminal 130. When a game item is registered in the blockchain, the game server 110 can retrieve the game item from the first game ID on the game service.

In addition, the item intermediary 153 includes game item-related information in the open item list. The open item list can be accessed by user terminals in the network system 100, for example, the second user terminal 140. Accordingly, users can check game items included in the open item list. The open item list may be stored in the database 155. The database 155 may include a storage medium located inside or outside the item intermediary 153. When the database 155 is located outside the item intermediary 153, the item intermediary 153 may communicate with the database 155 through wired communication and wireless communication. As another example, the open item list is stored in the blockchain, and the first and second user terminals 130 and 140 can access the blockchain through the item mediation server 150 or another server in the network system 100. Can be.

The item intermediary 153 identifies the ownership of the game item from the first game ID to the second user terminal 140 when the message requesting the purchase of the game item is received from the second user terminal 140 The blockchain is updated by transmitting the transaction information changing to data (for example, the second game ID or coupon ID) to the blockchain node 161. The game server 110 may access the blockchain and change ownership of game items on the game service according to transaction information registered (or reflected) on the blockchain.

The item intermediary 153 may process information to be transmitted to the blockchain node 161 using the peer private key 154 for updating the blockchain. For example, the item intermediary 153 digitally signs the transaction information for changing the ownership of the game item with the peer private key 154, and transmits the digitally signed transaction information to the blockchain node 161. Can be. The blockchain node 161 verifies the information transmitted from the item intermediary 153 using a peer public key corresponding to the peer private key 154, and updates the blockchain based on the information. can do. At this time, the peer public key may be provided by the item mediation server 150. For example, the item mediation server 150 may upload the peer public key to a repository accessible by the blockchain node 161.

Similarly, the digital currency transaction server 120 digitally signs digital currency information using a peer private key corresponding to the digital currency transaction server 120 to digitally reflect the digital currency associated with each user terminal, and digitally The signed digital money information can be transmitted to the blockchain node 161. The blockchain node 161 may verify the transmitted information using the corresponding peer public key and update the digital currency information of the blockchain according to the verification result.

According to an embodiment of the present invention, the item mediation server 150 mediates the transaction of game items between users of the user terminals 130 and 140. Accordingly, the convenience of item trading between users is improved. In addition, network traffic required when user terminals access the game server to directly trade game items is reduced, and furthermore, network resources can be efficiently used.

Blockchain is shared by a plurality of distributed blockchain nodes 160 and data blocks are associated in ways such as hash values, making it difficult to manipulate and having high reliability, while being shared by blockchain nodes 160 Since it should be, it ensures the transparency of the data. According to an embodiment of the present invention, by brokering game item transactions using a blockchain, reliability of game item transactions can be guaranteed.

On the other hand, in order to guarantee the reliability of a data block to be newly included in the blockchain, methods such as mining have been proposed, but according to these methods, considerable time is required to include a new data block. According to an embodiment of the present invention, the item mediation server 150 transmits the processed information to the blockchain node 161 using the peer private key 154, and the blockchain node 161 peers the transmitted information The blockchain is updated by verification using a public key. Accordingly, not only can the blockchain be updated through a verification process that takes a relatively short time, but only a pre-authorized device and / or server having the peer private key 154 can update the blockchain, thus blocking the blockchain. The reliability of the data block to be newly included in can also be guaranteed.

3 is a diagram conceptually showing a blockchain stored in the blockchain node of FIG. 1.

Referring to FIG. 3, the block chain 200 includes data blocks 210 to 230 sequentially connected. The block chain 200 is created by the block chain nodes 160 creating a new data block, sharing the generated new data block, and linking the shared data block to the block chain 200. 3, three data blocks 210 to 230 are exemplarily illustrated, but the number of data blocks that may be included in the block chain 200 is not limited thereto.

Each of the data blocks 210 to 230 includes a block header BH and a block body BB. The block header BH may connect (or link) between data blocks including a hash value of a previous data block. For example, the block header BH of the N-1 data block 220 includes a hash value included in the block header BH of the previous data block 210. The block body BB includes (or reflects) information on game items to be sold and transaction information on game items.

4 is a diagram conceptually showing a configuration of any one of the data blocks of FIG. 3.

3 and 4, the block header BH of the N-1 data block 220 includes a hash value 221 of the previous data block, a hash value 222 of the current data block, and a hash value of the body. (223).

The data blocks 210 to 230 are connected based on hash values. The hash value 221 of the previous data block of the N-1 data block 220 may be the same as the hash value of the current data block included in the block header BH of the N-2 data block 210. The hash value 222 of the current data block of the N-th data block 220 may be the same as the hash value of the previous data block included in the block header BH of the N-th data block 230. As such, each data block is concatenated by including the hash value of the previous data block in the block header BH. The hash value 223 of the body of the block header BH may be determined based on the corresponding block body BB.

The block body BB includes transaction information of game items. The block body BB may include wallet information of each user. In FIG. 4, the block body BB includes wallet information WLT1 of the first user and wallet information WLT2 of the second user. The wallet information WLT1 of the first user is associated with the first user terminal 130, and the wallet information WLT2 of the second user is associated with the second user terminal 140. The wallet information of each user may include the number of digital currencies (DGTCRC_AMT) of the user. Furthermore, the wallet information of each user may include the ID (ITM_ID1) of the game item associated with the corresponding user terminal, the quantity of the game item (QNT1), the corresponding game service (GMSRVC), and the corresponding game ID (GMID). The blockchain node 161 may change wallet information of each user based on transaction information changing ownership of game items.

Blockchain nodes 160 may verify the validity of data blocks 210-230 based on at least one of hash values included in each of data blocks 210-230. Accordingly, the contents of the data block already generated and included in the blockchain 200 are difficult to be forged or tampered with. Considering that the blockchain nodes 160 store the same data blocks 210 to 230, the data blocks 210 to 230 stored in any blockchain node among the blockchain nodes 160 are Even if it is forged or modulated, since the data blocks 210 to 230 stored in the corresponding node are different from the data blocks 210 to 230 of other nodes, forgery or modulation may be determined. As described above, the information stored in the blockchain has high reliability, and the reliability of the game item transaction can be ensured by brokering the game item transaction using the blockchain.

5 is a flowchart illustrating a method of processing a first message requesting sale of a game item from an item brokerage server according to an embodiment of the present invention.

Referring to FIG. 5, in step S110, a first message requesting sale of a game item is received from the first user terminal 130. The first message may include game item related information such as the ID of the game item and the quantity of the game item, and a digital currency of the selected amount. At this time, a first game ID may be further provided from the first user terminal 130.

In step S120, the game item is verified by communicating with the game server 110. For example, the game server 110 may determine whether the game item belongs to the first game ID, verify the first game item, and provide a feedback signal to the item mediation server 150 according to the verification result. . In step S130, if the game item is valid, step S140 is performed.

The order in which steps S110, S120, and S130 are performed may be variously changed. For example, step S120 may be performed before step S110. In this case, the item mediation server 150 may verify the game item selected by the first message by receiving information of game items corresponding to the first game ID from the game server 110.

In step S140, the game item information is transmitted to the blockchain node 161 in association with the first user terminal 130 to update the blockchain. For example, the wallet information WLT1 of the first user illustrated in FIG. 4 is game item information, for example, the game item ID (ITM_ID1), the number of game items (QNT1), the game service (GMSRVC), and A new data block may be generated to include the game ID (GMID).

 In step S150, the open item list is updated to include game item related information. The open item list may be updated to further include an amount of digital currency selected by the first message. The open item list is stored in the database 155, and the second user terminal 140 may access the open item list to query game items.

6 is a flowchart illustrating a method of processing a second message requesting the purchase of a game item in an item mediation server according to an embodiment of the present invention.

1 and 6, in step S210, a second message is received from the second user terminal 140 requesting purchase of a game item. The second message may include game item related information. The second user terminal 140 may further provide a second game ID.

In step S220, it may be determined whether the second message is permitted. The determination of whether to permit the second message may be performed according to various methods. For example, determination of whether the second message is permitted may be performed by requesting the game server 110 to verify the validity of the second game ID. If the second message can be permitted, step S230 is performed.

In step S230, transaction information for digitally signing the peer private key 154, which changes ownership of the game item, is transmitted to the blockchain node 161. The blockchain node 161 may verify transaction information according to the peer public key corresponding to the peer private key 154 and reflect the transaction information on the blockchain according to the verification result. Thereafter, the game server 110 may access the blockchain to change ownership of the game item on the game service according to the transaction information.

According to an embodiment of the present invention, the transaction of game items between users of the user terminals 130 and 140 is brokered. Accordingly, the convenience of item trading between users is improved. In addition, network traffic required when user terminals access the game server to directly trade game items is reduced, and furthermore, network resources can be efficiently used.

According to an embodiment of the present invention, by brokering game item transactions using a blockchain, reliability of game item transactions can be guaranteed.

In addition, according to an embodiment of the present invention, to update the blockchain, the blockchain is updated by transmitting digitally signed information with the peer private key 154 to the blockchain node 161. Accordingly, not only can the blockchain be updated through a verification process that takes a relatively short time, but only a pre-authorized device and / or server having the peer private key 154 can update the blockchain, thus blocking the blockchain. The reliability of the data block to be newly included in can also be guaranteed.

7 is a flowchart illustrating an embodiment of a method of processing a first message requesting sale of a game item.

Referring to FIG. 7, in step S301, the item mediation server 150 acquires (or generates) the first user private key associated with the first user terminal 130 according to the approval of the first user terminal 130. For example, the first user terminal 130 may access the item mediation server 150 through the first user ID and authorize the creation of the first user private key. The item mediation server 150 may generate a first user private key according to various methods. Alternatively, the first user private key may be provided by the first user terminal 130. The item mediation server 150 may store the first user private key in the database 155.

In step S302, the blockchain node 161 acquires the peer public key. The peer public key corresponds to the peer private key of the item mediation server 150, and may be provided by the item mediation server 150.

In step S303, the first user terminal 130 transmits a first message requesting the sale of the game item. For example, the first user terminal 130 may access the item mediation server 150 through the first user ID, provide a first game ID, and transmit a first message. The first message may include game item-related information and a selected amount of digital currency.

In step S304, the item mediation server 150 may communicate with the game server 110 to perform verification of the game item. For example, the item mediation server 150 requests the game server 110 to verify whether the game item belongs to the first game ID, and the game server 110 sends a feedback signal for the verification request to the item mediation. It transmits to the server 150. For example, the game server 110 may verify whether the game item belongs to the first game ID by referring to the list of items corresponding to the first game ID (see LST_GMID in FIG. 2). As another example, before receiving the first message, the item mediation server 150 may receive information about game items belonging to the first game ID from the game server 110. In this case, verification of the game item may be based on information on game items previously received from the game server 110.

In step S305, the item mediation server 150 generates a digital signature using the first user's private key when the game item is valid. For example, the item mediation server 150 may generate a digital signature by performing a predetermined encryption algorithm using the first user private key.

As another embodiment, the digital signature using the first user private key is performed by the first user terminal 130, and the digital signature using the first user private key may be included in the first message.

In step S307, the item mediation server 150 transmits the information of the game item digitally signed with the peer private key to the blockchain node 161 together with the digital signature using the first user private key. For example, the item mediation server 150 may perform a digital signature by performing a predetermined encryption algorithm using a peer private key. For example, the game item information may include the ID (ITM_ID1) of the game item shown in FIG. 4, the quantity of the game item (QNT1), the game service (GMSRVC), and the game ID (GMID). The peer private key can be generated based on communications between the item mediation server 150 and the blockchain node 161. The item mediation server 150 having a peer private key may mean that the item mediation server 150 is a device and / or a server that is previously authorized by the blockchain node 161.

In step S308, the blockchain node 161 verifies the information of the game item. The blockchain node 161 may verify the digital signature using the peer private key using the peer public key. In addition, the blockchain node 161 may verify the digital signature using the first user private key using the first user public key. These verification operations can be performed based on certain decoding algorithms. The first user public key can be provided according to various methods. For example, the first user public key may be obtained based on an identifier corresponding to the wallet information (WLT1, see FIG. 4) of the first user. By verifying the digital signature using the first user public key, it is verified whether the information of the game item transmitted in step S307 is originated or approved by the user of the first user terminal 130, not other sources of the network system. Can be. Accordingly, the reliability of the item brokering service can be guaranteed.

When verification of the digital signature using the peer private key and the digital signature using the first user private key is passed, verification of the information of the game item can be passed.

In step S309, when the transmitted game item information is valid, the blockchain node 161 updates the blockchain to include the game item information. For example, the blockchain node 161 may generate a new data block for including game item information in the wallet information WLT1 of the first user described with reference to FIG. 4.

In step S310, the blockchain node 161 may transmit a feedback signal indicating that the blockchain has been updated to the item mediation server 150. In step S311, the item mediation server 150 updates the open item list to include the game item related information and the amount of digital money selected by the first message in response to the feedback signal.

In step S312, the game server 110 may access the blockchain node 161 to query the blockchain. As an embodiment, the item mediation server 150 notifies the game server 110 that the blockchain has been updated in relation to the first user terminal 130 or the first game ID, and the game server 110 responds to such an alarm signal. You can query the blockchain. When the game item information is included in the blockchain, the game server 110 may manage the game item as an item to be traded. For example, as in step S313, the game server 110 may retrieve the game item from the first game ID.

8 is a flowchart illustrating an embodiment of a method of processing a second message requesting purchase of a game item.

1 and 8, in step S401, the item mediation server 150 obtains (or generates) a second user private key associated with the second user terminal 140 according to the approval of the second user terminal 140. )do. For example, the second user terminal 140 may access the item mediation server 150 through the second user ID and authorize the creation of the second user private key to the item mediation server 150. Alternatively, the second user private key may be provided by the second user terminal 140.

In step S402, the second user terminal 140 queries the list of open items stored in the database 155 of the item mediation server 150. In step S403, the second user terminal 140 transmits a second message requesting the purchase of the game item. For example, the second user terminal 140 may access the item mediation server 150 through the second user ID and transmit a second message. At this time, the second user terminal 140 may further provide a second game ID.

In step S404, the item mediation server 150 may determine whether or not to allow the second message. For example, the item mediation server 150 may request the game server 110 to verify the validity of the second game ID.

In step S405, the item mediation server 150 generates a digital signature using the second user's private key when the second message is allowed. For example, the item mediation server 150 may generate a digital signature by performing a predetermined encryption algorithm using the second user private key. As another embodiment, the digital signature using the second user private key is performed by the second user terminal 140, and the digital signature using the second user private key may be included in the second message.

In step S407, the item brokering server 150 transmits transaction information for changing the ownership of the game item digitally signed with the peer private key, together with the digital signature using the second user private key. For example, the item brokerage server 150 may digitally sign transaction information that changes the ownership of the game item by performing a predetermined encryption algorithm using the peer private key. The transaction information may include information on the game item and digital money information in an amount selected by the first message.

In step S408, the blockchain node 161 verifies transaction information. For example, the blockchain node 161 may verify the digital signature using the peer private key using the peer public key. The blockchain node 161 may verify the digital signature using the second user's private key using the second user's public key. These verification operations can be performed based on certain decoding algorithms. The second user public key can be provided according to various methods. For example, the second user public key may be obtained from an identifier corresponding to the second user's wallet information (WLT2, see FIG. 4). As such, by verifying the digital signature using the second user public key, whether the transaction information transmitted in step S407 is originated or approved by the user of the second user terminal 140, not other sources of the network system. Can be verified. Accordingly, reliability of the item brokering service can be ensured.

In addition, the blockchain node 161 may determine whether the transaction can be authorized by verifying the digital currency associated with the second user terminal 140 from the wallet information WLT2 of the second user. For example, whether the transaction is permitted may be determined according to whether the digital money associated with the second user terminal 140 is greater than or equal to the amount of digital money selected by the first message.

When the digital signature using the peer private key, the digital signature using the second user private key, and the verifications of the digital currency associated with the second user terminal 140 are passed, verification of the transaction information may be passed.

In step S409, when the transmitted transaction information is valid, the blockchain node 161 updates the blockchain to reflect the transaction information. For example, the blockchain node 161 increases the amount of digital money (DGTCRC_AMT) of the first user's wallet information (WLT1, see FIG. 4), and the information of the game item from the first user's wallet information (WLT1). A new data block for deleting, reducing the amount of digital money (DGTCRC_AMT) of the second user's wallet information (WLT2, see FIG. 4), and adding game item information from the second user's wallet information (WLT2) You can create

In step S410, the blockchain node 161 may transmit a feedback signal indicating that the blockchain has been updated to the item mediation server 150. In step S411, the item mediation server 150 deletes the game item related information from the open item list in response to the feedback signal.

In step S412, the game server 110 may access the blockchain node 161 to query the blockchain. As an embodiment, the game server 110 may query the blockchain in response to a request from the item mediation server 150 or the second user terminal 140. In step S413, according to the transaction information reflected in the blockchain, the game server 110 may change the ownership of the game item. For example, the item list corresponding to the second game ID (see LST_GMID in FIG. 2) may be updated.

9 is a block diagram illustrating an exemplary computer device suitable for the item mediation server shown in FIG. 1.

Referring to FIG. 8, the computer device 1000 includes a bus 1100, at least one processor 1200, a system memory 1300, a storage medium 1400, and a communicator 1500.

The bus 1100 is connected to various components of the computer device 1000 to transfer data, signals, and information. The processor 1200 may be either a general purpose or a dedicated processor, and may control various operations of the computer device 1000.

The processor 1200 is configured to load program codes and instructions that provide various functions when executed into the system memory 1300 and process the loaded program codes and instructions. For example, the system memory 1300 may be provided as a working memory of the processor 1200.

The processor 1200 is a game server interface module 1310 that provides functions of the game server interface 151 of FIG. 1 when executed by the processor 1200, and a block chain interface of FIG. 1 when executed by the processor 1200 ( The system interface 1300 includes a block chain interface module 1320 providing functions of 152 and an item intermediary module 1330 providing functions of the item intermediary 153 of FIG. 1 when executed by the processor 1200. Can be loaded on. Such program codes and / or instructions may be executed by the processor 1200 to perform operations of the item mediation server 150 described with reference to FIGS. 5, 6, 7, and 8. Additionally, system memory 1300 may further include program codes and instructions that, when executed by processor 1200, provide one or more additional functions.

As an embodiment, the system memory 1300 may include at least one of a random access memory (RAM), a read only memory (ROM), and other types of computer-readable media.

Program codes and / or instructions to be loaded into the system memory 1300 may be loaded from the storage medium 1400, which is a recording medium readable by a separate computer. The program codes and instructions may be loaded into the system memory 1300 from the external device of the computer device 1000 through the communicator 1500.

As an embodiment, the storage medium 1400 may include various types of non-volatile storage media that retain stored data even when the power is cut off, for example, flash memory, hard disk, or the like. .

The communicator 1500 (or transceiver) transmits and receives signals between the computer device 1000 and other devices through the network 105.

Although specific embodiments and application examples have been described herein, this is provided only to assist in a more general understanding of the present invention, and the present invention is not limited to the above embodiments and has ordinary knowledge in the field to which the present invention pertains. Various modifications and variations are possible from this description when grown.

Although specific embodiments and application examples have been described herein, this is provided only to assist in a more general understanding of the present invention, and the present invention is not limited to the above embodiments and has ordinary knowledge in the field to which the present invention pertains. Various modifications and variations are possible from this description when grown.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and should not be determined, and all claims that are equivalent or equivalent to the scope of the claims as well as the claims to be described later belong to the scope of the spirit of the invention. .

100: network system
110: game server
130: first user terminal
140: second user terminal
150: item mediation server
160: blockchain nodes

Claims (16)

On a network server that mediates game item transactions between user terminals:
Communicator; And
It is connected to the communicator, and includes at least one processor that transmits and receives data to and from a blockchain node storing at least partially a blockchain through the communicator,
The at least one processor,
Communicating with the blockchain node through the communicator to obtain a peer private key to allow the network server to update the blockchain;
Receiving a first message from a first user terminal requesting sale of a game item;
Provide access to the game item to a second user terminal when the game item is valid;
Receiving a second message requesting the purchase of the game item from the second user terminal;
Based on the second message, the transaction information for changing the ownership of the game item is processed using the peer private key, and the processed transaction information is transmitted to the blockchain node to update the blockchain Network server. According to claim 1,
Further comprising a storage medium connected to the at least one processor and configured to store the peer private key,
The at least one processor is further configured to generate the processed transaction information by performing a digital signature associated with the transaction information using the peer private key. According to claim 2,
The at least one processor is further configured to provide a peer public key corresponding to the peer private key to the blockchain node. According to claim 1,
When the game item is valid, the at least one processor processes the information of the game item using the peer private key to generate a third message, and sends the third message to the blockchain node to A network server further configured to update the blockchain to include information of game items. The method of claim 4,
The first message includes a digital signature using a first user private key associated with the first user terminal,
The at least one processor includes the digital signature using the first user private key in the third message. According to claim 1,
The at least one processor is further configured to store a first user private key associated with the first user terminal in a database, and to generate a digital signature using the first user private key when the game item is valid. The method of claim 6,
The at least one processor processes the information of the game item using the peer private key to generate a third message, and transmits the third message to the blockchain node to include the information of the game item It is further configured to update the blockchain,
The at least one processor includes the digital signature using the first user private key in the third message. According to claim 1,
And the at least one processor is further configured to store information of the game item in a database associated with the network server and accessible by the second user terminal. According to claim 1,
The second message includes a digital signature using a second user private key associated with the second user terminal,
The at least one processor is further configured to transmit the digital signature using the second user private key together with the processed transaction information to the blockchain node. According to claim 1,
The at least one processor stores a second user private key associated with the second user terminal in a database, performs a digital signature using the second user private key, and the digital signature using the second user private key And a network server further configured to transmit the processed transaction information to the blockchain node. According to claim 1,
The transaction information includes information for changing the game item to be associated with the second user terminal, and information for changing the digital currency associated with the second user terminal to be associated with the first user terminal. According to claim 1,
The at least one processor is further configured to transmit, to a game server associated with the game item, a third message indicating that the blockchain has been updated according to a feedback signal from the blockchain node corresponding to the transmission of the processed transaction information. Network server configured. In a method of operating a network server that mediates game item transactions between user terminals:
The network server transmits and receives data to and from a blockchain node that stores at least partially the blockchain,
The above method,
Obtaining a peer private key to allow the network server to update the blockchain by communicating with the blockchain node;
Receiving a first message from a first user terminal requesting sale of the game item;
Providing access to information of the game item to a second user terminal when the game item is valid;
Receiving a second message requesting the purchase of the game item from the second user terminal;
Processing transaction information for changing ownership of the game item using the peer private key based on the second message; And
And transmitting the processed transaction information to the blockchain node. The method of claim 13,
The processing step includes generating the processed transaction information by performing a digital signature associated with the transaction information using the peer private key. The method of claim 13,
And providing a peer public key corresponding to the peer private key to the blockchain node. The method of claim 13,
When the game item is valid, processing the information of the game item using the peer private key to generate a third message; And
And sending the third message to the blockchain node to update the blockchain to include information of the game item.

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