System, method and computer readable recording medium for providing game authorization independent from game client

The present invention game relates to a system, method and computer readable medium for providing a client independent game authentication, through the received execution request from the game client launch unit conducts the first authentication, through the first authentication It is executed only in the continued and request the execution of the game client case, one receives the execution initialization signal of the game client then sends the user-specific information for the second authentication with the game system received in the response a second authentication result game client authentication unit for determining whether or not proceed according to and, receives the execution request in accordance with the game the execution client authentication is negative, the game client to send to the client authentication unit initialization signal with the execution according to the execution request including, where the game client DLL by the injection method, during the execution of the game client is modified to load the DLL, including the ability to transmit and receive with the game client authentication unit.