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:
Apr. 14, 2020
Filed:
Mar. 23, 2017
Renesas Electronics Corporation, Tokyo, JP;
Seishiro Nagano, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
In a system including a terminal device where a plurality of apps are installed and can be executed and a management device capable of communicating with the terminal device; even if the terminal device does not have an advanced security function such as a secure boot, the validity of apps is determined in conjunction with the reliable management device. The management device stores specific values uniquely calculated respectively from a plurality of apps installed on the terminal device, as a plurality of installation-time specific values. The system causes the terminal device to calculate a specific value uniquely calculated from one app, as an execution-time specific value, and determines that the app is authentic if the calculated execution-time specific value matches one of the installation-time specific values stored in the management device.