Mitsubishi Electric Corporation

Takehiro Ohkoshi

Keiki Yamada

Satoru Makita

An authenticated deviceincludes a memory unitto store at least one algorithm identifier and at least one encryption key identifier, a transmitting unitto transmit at least one algorithm identifier and at least one encryption key identifier stored by the memory unitto an authenticating device, a receiving unitto receive a prescribed algorithm identifier and a prescribed encryption key identifier selected from among at least one algorithm identifier and at least one encryption key identifier transmitted by the transmitting unitfrom the authenticating device, and an authentication processing unitto perform an authentication process with the authenticating devicebased on the prescribed algorithm identifier and the prescribed encryption key identifier received by the receiving unit

Authenticated device, authenticating device and authenticating method

An authenticating deviceincludes an authentication processing unitto perform an authentication process with a communication deviceusing an authentication key, an update key generating unitto generate a new authentication key when the communication devicedoes not hold an authentication key to be used in the authentication process by the authentication processing unit, and to generate a new authentication key for updating the authentication key when the communication deviceholds the authentication key but the authentication process with the communication deviceby the authentication processing unitfails. The authentication processing unitperforms again the authentication process with the communication deviceusing the new authentication key generated by the update key generating unit

Growing community of inventors

Tokyo, Japan

Takehiro Ohkoshi