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:
Jun. 09, 2026
Filed:
Nov. 16, 2021
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Takashi Miyamoto, Kanagawa, JP;
Toru Akishita, Tokyo, JP;
Yoshitomo Osawa, Tokyo, JP;
Hirotake Yamamoto, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
The present disclosure relates to an information processing device, a mobile device, and a communication system capable of updating a session key. A first secret is derived from a key schedule by using first communication including transmission or reception of a command for controlling second communication faster than the first communication or a response to the command, a first session key related to the first secret is derived, the first session key is used for encryption or message authentication of the first communication, a second session key is received, transmitted, or derived by using the first communication, the second session key is used for encryption or message authentication of the second communication, a third session key is received, transmitted, or derived by using the first communication, and the third session key is used instead of the second session key.