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:
Dec. 02, 2025
Filed:
Mar. 10, 2023
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Digital Solutions Corporation, Kawasaki, JP;
Masamichi Tateoka, Tokyo, JP;
Masanori Tomoda, Tokyo, JP;
Tomoyuki Tanaka, Tokyo, JP;
Kazutoyo Nakamura, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Digital Solutions Corporation, Kawasaki, JP;
Abstract
According to one embodiment, an encryption/decryption execution environment encrypts and decrypts data of an application program while consuming an encryption key unit. A key exchange node accumulates an encryption key shared with a communication counterpart. A key accumulation amount monitoring function unit included in a key exchange node monitors an accumulation amount of the encryption key. A key accumulation amount notification function unit included in an application execution environment notifies a user of the application program or the application program of an accumulation amount of the encryption key acquired by the key accumulation amount monitoring function unit.