The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2015
Filed:
Sep. 16, 2011
Mikio Hashimoto, Tokyo, JP;
Shinji Yamanaka, Tokyo, JP;
Yuichi Komano, Kawasaki, JP;
Taku Kato, Kamakura, JP;
Hiroshi Isozaki, Kawasaki, JP;
Mikio Hashimoto, Tokyo, JP;
Shinji Yamanaka, Tokyo, JP;
Yuichi Komano, Kawasaki, JP;
Taku Kato, Kamakura, JP;
Hiroshi Isozaki, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
The debugging unit writes a public key of the key issuing server and an initializing program given from outside, to the storage unit. The instruction executing unit reads and executes the initializing program stored in the storage unit. The debug disabling unit disables the debugging unit. The public-key encrypting unit encrypts the random number by the public key in the storage unit, the random number generated by the random number generating unit after the debugging unit is disabled. The transmitting unit transmits the encrypted random number to the key issuing server. The receiving unit receives an individual key encrypted by the random number from the key issuing server. The individual-key writing unit decrypts the encrypted individual key by the random number to obtain the individual key and write the individual key to the storage unit.