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:
Nov. 29, 2022
Filed:
Feb. 25, 2019
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Naoki Ogura, Yokohama, JP;
Yoshikazu Hanatani, Komae, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
According to one embodiment, an information processing apparatus includes one or more processors. The processors store a first public key certificate and second public key certificates in storage. The first public key certificate includes a first validity period, a signature, and a public key. Each of the second public key certificates including a signature and a second validity period that is within the first validity period and shorter than the first validity period. The second validity periods included in the second public key certificates are mutually different. The processors receive specific information of the first public key certificate. The processors transmit one of the plurality of second public key certificate including the second validity period in which a start time of the second validity period is before a current time and generated from the first public key certificate specified by the received specific information to a transmission source of the specific information.