KR20120045235A - Method for game client authentication using random code - Google Patents

Abstract

PURPOSE: A method for authenticating a game client using a random code is provided to authenticate a game client by generating random code which is only used for once and is not a fixed code. CONSTITUTION: A game server communicates through a game client installed at a user computer and a communication network. The game server transmits a random code to the game client(S212). A result value is calculated by executing a received corresponding random code(S214). The matching of a calculated result value and a received value is checked(S216). The game client produces the result value by executing the random code received from the game server. The game client transmits the calculated result value to the game server.

Description

Method for Game Client Authentication using Random Code}

The present invention relates to a method for authenticating a game client installed and executed in each user computer, and more particularly, to effectively monitor a robot program ((Non-Client BOT) that abnormally uses an online game by processing a packet without a game client. It is for.

As the network and computer related technologies are developed, various kinds of online game services are being provided. As the value of the goods in the game increases, the use of online games in an abnormal way is increasing.

There are a variety of ways to use online games abnormally to obtain in-game goods.

For example, using a USB device, a hardware processing method that pretends to be a user entering a command through a keyboard or mouse, and a program (a malicious module) that performs a specific function is loaded into an online game process in memory. A software method of calling a function is one.

In addition, a method of processing only packet data exchanged with a game server using a robot program without a game client may be used. Such a robot program is referred to as a non-client bot.

The non-client bot attempts to acquire in-game goods by connecting to the game server and performing in-game activities such as hunting and gathering by itself.

When the game is progressed by the robot program, users who normally use the game have various problems such as unjustly deprived of the opportunity to obtain good game items in the game, interrupted the game progress, and excessive load on the game server. do. It can also be a major factor in reducing the interest in the game, allowing users to avoid using the game and generate complaints.

Accordingly, the present invention has been made in order to solve the above problems, so that it can effectively monitor the robot program (Non-Client BOT) to play the online game by processing only the packet data exchanged with the game server without a game client. Its purpose is to.

In order to achieve the above object, in the game client authentication method using the random code according to the present invention, a game server that provides an online game service while communicating with a game client installed on a user computer through a communication network (Random Code) Generating and transmitting to the game client; If a result value of the transmitted random code is received through a communication network, executing the random code to calculate a result value; And comparing the calculated result value with the received result value and examining whether the calculated result value coincides with each other.

In this case, when the random code is received from the game server, the game client executes the received random code to calculate a result value and transmits the calculated result value to the game server.

The game server determines that a normal game client plays an online game if the calculated result value and the received result value match, and if the calculated result value does not match the received result value, the robot It can be determined that the program is playing an online game.

The random code may be configured to calculate a correct result value only when the game client is in a running state.

The random code may be configured to calculate a result value using a memory value of a specific area of a process area generated in a memory of the user computer when a game client is executed.

In addition, if the result value of the transmitted random code is not received for a predetermined time, the game server may determine that the robot program is playing an online game.

According to the present invention, the game server authenticates the game client by generating an unfixed one-time random code and sending it to the game client, and receiving the result and checking whether it is correct.

If an online game is currently being played through a game client, a normal result may be received from the game client.

However, if the online game is played through a non-client BOT, the correct result value for the random code sent by the game server cannot be received. In other words, the robot program cannot respond because it will not recognize the random code transmitted by the game server.

Even if the robot program can recognize the random code, if the random code is configured to produce the correct result only when the game client is running, the robot program responds to the wrong result.

Thus, non-client bots can be effectively monitored.

In addition, the game client does not need to maintain code or data for authentication, so periodic updates are not necessary.

1 is an overview of a system for servicing an online game;
2 is a specific example of a user computer;
3 and 4 are flowcharts illustrating each embodiment of a game client authentication method using a random code according to the present invention;
5 is an outline for explaining that a robot program is monitored;
6 is a specific example of a random code.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, an online game service is provided through various communication networks 15 such as a wired internet network or a wireless internet network, and the game client 11 installed in the user computer 10 has a game server through the communication network 15. (17) communicate with each other to play an online game.

There may be various types of online games, and a specific example may be a game of a Massively Multi-player Online Role Playing Game (MMORPG) type, in which several users may participate simultaneously.

The user computer 10 used by each user to play the online game is not only a personal computer (PC) such as a desktop computer or a laptop computer, but also an online game service through a communication network 15 such as a mobile phone or a smartphone. It can be any device with available performance.

The user computer 10 is provided with a game client 11 that allows the user to play online games.

The game client 11 may be downloaded and installed through the communication network 15 and maintained at the latest version. The game client 11 may display the game related announcements, process the game screen, process sound effects, and provide various user interfaces for the game. It has a variety of roles to be played.

The game client 10 basically plays an online game while communicating with the game server 17, and the role sharing between the game client 11 and the game server 17 may be variously configured as necessary. .

In connection with the present invention, when the game client 11 receives a random code from the game server 17, the game client 11 executes the received random code to calculate the result value, and transmits the calculated result value to the game server 17. It is configured to.

The robot program 12 may be installed in the user computer 10 instead of the game client 11.

Hereinafter, the robot program 12 refers to a non-client bot, and the robot program 12 abnormally plays an online game by processing packet data exchanged with the game server 17 without a game client. Proceed.

2 shows a specific example of the user computer 10.

Each element is connected to each other through the system bus (10-1) of various structures, and performs the role while exchanging data with each other under the overall control of the Central Processing Unit (CPU) (10-2).

The memory 10-3 is a random access memory (RAM), and stores computer programs or data that the central processing unit 10-2 immediately accesses.

The input device interface 10-4 is connected to the input device 10-5 so that a user can input various commands or information to the user computer 10. The user computer 10 may be connected to various types of input devices 10-5, such as a keyboard, a mouse, a keypad, and a touch screen through the input device interface 10-4.

The display adapter 10-6 processes the video information to be output through the various display devices 10-7, and the sound card 10-8 processes the audio information and outputs it through the speaker 10-9.

The network interface 10-11 allows the user computer 10 to communicate with various communication networks 15 such as a wired internet network or a wireless internet network.

The storage medium 10-10 is nonvolatile and may have various forms of internal, external, removable, and non-removable types that can be accessed by the user computer 10.

The storage medium 10-10 stores various computer programs and data such as an operating system (OS) 14 such as Microsoft's Windows or a game client 11.

When a user wants to use an online game abnormally using a robot program, the robot program 12 may be installed in the storage medium 10-10 instead of the game client.

When the user executes the game client 11 or the robot program 12, the central processing unit 10-2 loads the corresponding code into the memory 10-3 to process sequentially.

3, an embodiment of a game client authentication method using a random code according to the present invention will be described.

First, the game server 17 generates a random code (Sandom Code) (S211), and transmits to the game client 11 (S212).

The random code herein refers to computer program code that can be executed on a computer device to produce a result value.

The random code may be discarded after being used for authentication of the game client 11, and the game server 17 generates different random codes each time authentication of the game client 11 is performed.

If the robot program 12 executed in the user computer 10 is also configured to recognize the random code received from the game server 17, the robot code 12 can process the random code to calculate the result value.

Therefore, the random code may be configured to calculate the correct result value only when the game client 11 is executed in the user computer 10.

As one example in this regard, the random code may be configured to calculate a result value using a memory value of a specific area of a process area generated in the memory 10-3 of the user computer when the game client 11 is executed. Can be.

In this case, the hash value of the data stored in the memory of the specific region may be configured to be used for the calculation.

Then, even though the robot program 12 can recognize the random code, since the game client 11 is not running, the correct result value cannot be calculated.

For example, if the random code is configured to use 4 bytes of data of a specific address in the online game process area generated in the memory 10-3 according to the execution of the game client 11 for the calculation, the robot program ( 12) Even if this code is recognized and executed, the correct result cannot be calculated.

The random code transmitted by the game server 17 to the game client 11 through the step S212 is transmitted in a packet, and the header of the packet contains information that the data contained in the packet is a random code.

The game client 11 may analyze the header of the packet received from the game server 17 through the communication network 15 and recognize that the packet is a packet for transmitting a random code. After the received random code is executed to calculate the result value (S213), the calculated result value is transmitted to the game server 17 (S214).

When the result value of the random code transmitted through the step S212 is received through the communication network 15, the game server 17 executes the random code transmitted through the step S212 by itself and calculates the result value (S215).

Since the random code is computer program code that can be executed on a computer device to calculate a result value, it can be executed not only on the user computer 10 but also on the game server 17, and the result value should be calculated identically.

Regarding step S215, if the random code is configured to calculate the correct result value only when the game client 11 is in a running state as in the above example, the game server 17 uses the random code for calculation. The data is known or the game client 11 is running.

The game server 17 then compares the result value calculated in step S215 with the result value received in step S214 and checks whether they match with each other (S216).

The game server 17 may determine whether the program currently playing the online game in the user computer 10 is the normal game client 11 or the robot program 12 according to the result of the investigation in step S216.

That is, the game server 17 determines that the online game is played by the normal game client 11 when the two values match with each other as a result of the check in step S216 (S217, S218), and the robots if the two values do not match with each other. It is determined that the program is to play an online game (S217, S219).

When it is determined that the robot program is playing an online game, the game server 17 may take various actions as necessary.

For example, the user's ID (ID), user character identification information, IP address of the user's computer, and game usage date and the like, which are connected through the user computer on which the robot program operates, may be stored as log information.

This log information can then be used as a basis for applying sanctions such as banning or warning the user.

The game server 17 may monitor whether the program using the online game is the game client 11 or the robot program 12 by transmitting a random code when a user character logs in. In addition, the game server 17 may transmit a random code at any time as needed.

On the other hand, if the program to access the game server 17 and play the online game is the robot program 12, the response associated with the random code transmitted by the game server 17 through step S212 may not be received.

That is, when the robot program 12 does not know the header of the packet for transmitting the random code, it will not be able to recognize the packet received from the game server 17 and thus cannot receive the random code. Therefore, the robot program 12 cannot execute random code or transmit the result value to the game server 17.

An embodiment of this case will be described with reference to FIG. 4.

The game server 17 transmits a random code through step S212 of FIG. 3 and waits for a response to be received (S231).

If a result value for the random code is received before a predetermined time has elapsed, the process proceeds to step S215 of FIG. 3 (S232, S233).

However, if a predetermined time has elapsed while the result value regarding the random code is not received, the process proceeds to step S219 of FIG. 3 (S232).

Here, the time for waiting for the result value after transmitting the random code to the game server 17 can be set to a reasonable time as needed.

Referring to Figure 5 will be summarized each embodiment described above.

As shown in FIG. 5A, if the program that accesses the current game server 17 and proceeds with the online game is the game client 11, the random code transmitted from the game server 17 is executed to respond to a correct result value. Can be.

However, as shown in FIG. 5B, if the program currently connected to the game server 17 to play an online game is the robot program 12, a response to the random code transmitted from the game server 17 may not be possible, or Or the wrong result.

Therefore, the game server 17 may determine that the online game is in progress by the current robot program 12 if a response to the random code transmitted or an incorrect result value is received.

The game server 17 may generate random codes in various ways.

For example, the formal part constituting the random code may be configured in the form of a fixed template, and the random code may be generated by arbitrarily changing only the part for calculating data.

6 illustrates an example of a random code, and includes a prologue part of a function, an epilogue part of a function, a data processing start part, a data processing end part, and a data operation part.

In this structure, the game server 17 maintains the prologue part of the function, the epilogue part of the function, the start of data processing, the end of data processing, and the end of data processing in the fixed template, and randomly operate the data operation part. You can use the construction method.

At this time, the data operation portion can be arbitrarily selected at that time in a table having multiple data.

The prologue part of the function, the epilogue part of the function, the start of data processing, and the end of data processing may also be changed as necessary.

The above-described embodiments are intended to help the understanding of the present invention, and the present invention is not limited to the above-described embodiments and can be variously modified and implemented by those skilled in the art without departing from the spirit of the present invention. to be.

10: User Computer 11: Game Client
12: robot program 15: communication network
17: Game Server 10-2: Central Processing Unit (CPU)
10-3: memory

Claims (5)

Generating a random code by a game server providing an online game service while communicating with a game client installed in a user computer through a communication network and transmitting the random code to the game client;
If a result value of the transmitted random code is received through a communication network, executing the random code to calculate a result value; And
Comparing the calculated result value with the received result value and investigating whether or not they match each other;
When the game client receives a random code from the game server, the game client is configured to execute the received random code, calculate a result value, and transmit the calculated result value to the game server. Client authentication method. The method of claim 1,
The game server determines that a normal game client plays an online game if the calculated result value and the received result value match, and if the calculated result value and the received result value do not match, the robot Game client authentication method using a random code, characterized in that the program determines to play an online game. The method of claim 1,
The random code is a game client authentication method using a random code, characterized in that configured to calculate the correct result only when the game client is running in the user computer. The method of claim 3, wherein
The random code is a game client authentication method using a random code, characterized in that configured to calculate the resulting value using the memory value of a specific area of the process area generated in the memory of the user computer when the game client is executed. The method of claim 1,
The game server authentication method using a random code, characterized in that if the result of the transmitted random code is not received for a predetermined time, the robot program proceeds to the online game.

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