Patent ID: 7987513

Claim:
A method executed by a job administrator terminal that provides service to a job executor terminal and is included in a service provision system, wherein the service provision system further includes an environment-managing-office terminal authenticating the job executor terminal and a network operator terminal relaying communication between the job executor terminal and the environment-managing-office terminal, the method comprising: first transmitting service data to the job executor terminal, control information being required for receiving provision of the service and embedded in the service data; first receiving an evaluation value computed by the environment-managing-office terminal, an authentication result authenticated by the environment-managing-office terminal, a service ID for uniquely identifying the service and a job executor ID for uniquely identifying the job executor terminal from the network operator terminal, the evaluation value being computed based on hashed control information and hashed environmental information both transmitted from the job executor terminal, the hashed control information being hash value of control information embedded in the service data, the hashed environmental information being hash value of environmental information including information on software and hardware built in the job executor terminal; judging whether to transmit a content identified by the service ID based on the evaluation value, the authentication result, the service ID and the job executor ID; and controlling the provision of the service to the job executor terminal based on a result of the judging.