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:
Oct. 20, 2015
Filed:
Jun. 26, 2013
Kabushiki Kaisha Toshiba, Tokyo, JP;
Masato Shimano, Yokohama, JP;
Go Fujino, Kiyose, JP;
Masaaki Miki, Yokohama, JP;
Yoshiyuki Tsuzuki, Koza-gun, JP;
Isao Takeyasu, Yokohama, JP;
Eiji Tokita, Kawasaki, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
According to one embodiment, an apparatus includes a permission/inhibition information storage which stores a permission/inhibition information file, a changer which changes a first encryption key of a first private key encrypted with the first public key to the second public key by using the first re-encryption key, a first storage which stores a second private key in a device private key temporary storage, a second storage which stores a second re-encryption key in a re-encryption key storage, a permission/inhibition information registration module which registers second permission/inhibition information in the permission/inhibition information file, and a transmitter which transmits the second private key in the re-encryption key storage to the second terminal.