To appropriately disclose attribute information.
A main disclosure device obtains master attribute information on a user using the main disclosure device from a master attribute information storage section, outputs the obtained master attribute information to an output section, accepts input information at its input section to determine attribute information to be disclosed to a disclosure information-receiving device based upon the output master attribute information, encrypts the accepted disclosure attribute information in such a way that it can be decrypted by the main disclosure device as well as the disclosure information-receiving device, and transmits the encrypted disclosure attribute information to an attribute control device which is communicably connected with each of the main disclosure device and the disclosure information-receiving device. The attribute control device, having a storage section for storing the encrypted disclosure attribute information, stores the transmitted encrypted disclosure attribute information, which is then obtained by the disclosure information-receiving device to be decrypted.
COPYRIGHT: (C)2009,JPO&INPIT
Shoji Toyama
Kinko Sueda
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Miyata Hideki