Patent ID: 7317798

Claim:
A communication processing system for performing a process that allows communication via a network, comprising: a communication terminal serving as a calling terminal that starts a call; a communication terminal designated as a destination terminal by the calling terminal; and a server connected to the network, the server serving to perform a process, the process including the steps of acquiring location information of a mobile terminal designated as the destination terminal and storing the acquired location information in a database in relation to an identifier of the destination terminal; in response to receiving request data, designating the destination terminal from the calling terminal, generating a session key encrypted in said server with at least two different private keys including at least one private key specific to the destination terminal and at least one private key specific to the calling terminal, the session key serving as a common key to be used in a secure communication between the calling terminal and the destination terminal; and providing, to the calling terminal, the generated session key and address information on the basis of the location information of the destination terminal acquired from the database.