Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
System of authentication, apparatus, program and method
Each embodiment of this invention implements step-by-step and empirical authentication of devices upon digital authentication among a plurality of devices. Each of a plurality of authentication devices of each embodiment can unidirectionally generate a hash value of a low experience rank from a hash value of a high experience rank, and receives a set of high experience rank and hash value in accordance with an experience. Upon receiving a certification request of the experience rank from another authentication device, the authentication device transmits a corresponding hash value to the authentication device as a request source. Upon sending a certification request of an experience rank to another authentication device, the authentication device verifies a hash value obtained from the other authentication device on the basis of a self hash value. In this way, the authentication devices authenticate each other's experience ranks.
Kabushiki Kaisha Toshiba
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additional inventional additional
Naoki Yasuhiko Kenichi Koichi Hideo Shingo Akio Akihiro Daigo Koji Sunao Takehisa Akira Toru Masao
Endo Suzuki Hiramatsu Noguchi Shimizu Miyazaki Okazaki Kasahara Yoshii Mikami Wada Kato Toshima Kambayashi Suga