Patent ID: 7657749
Filing Date: 2010-02-02
Classification: H04L

Abstract:
1. A communication relay method for relaying information between an outside communication device connected to an outside network and a home communication device connected to a home network through a communication relay device, comprising: carrying out a first authentication and key exchange processing for purpose of copyright protection between the communication relay device and the home communication device on the home network; carrying out a second authentication and key exchange processing for purpose of copyright protection between the communication relay device and the outside communication device on the outside network, based on a scheme different from the first authentication and key exchange processing; storing, in an identification information memory, an identification information of the outside communication device prepared at least on the basis of the device ID of the outside communication device uniquely assigned beforehand among all the copyright protection devices worldwide; and receiving an access request for the home network from the outside communication device, and carrying out transmission/reception of content that requires copyright protection between the home network and the outside network only when the identification information of the outside communication device which made the access request is stored in the identification information memory unit and then only when both the first authentication and key exchange processing and the second authentication and key exchange processing succeed.