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:
Mar. 25, 2014
Filed:
Sep. 16, 2010
Yuji Unagami, Osaka, JP;
Yuichi Futa, Osaka, JP;
Natsume Matsuzaki, Osaka, JP;
Hiroki Shizuya, Miyagi, JP;
Masao Sakai, Miyagi, JP;
Shuji Isobe, Miyagi, JP;
Eisuke Koizumi, Miyagi, JP;
Shingo Hasegawa, Miyagi, JP;
Junya Iwazaki, Miyagi, JP;
Yuji Unagami, Osaka, JP;
Yuichi Futa, Osaka, JP;
Natsume Matsuzaki, Osaka, JP;
Hiroki Shizuya, Miyagi, JP;
Masao Sakai, Miyagi, JP;
Shuji Isobe, Miyagi, JP;
Eisuke Koizumi, Miyagi, JP;
Shingo Hasegawa, Miyagi, JP;
Junya Iwazaki, Miyagi, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention aims to perform tamper detection on a protection control module without having detection modules come to know the key data and functions thereof. The detection modules of the present invention perform tamper detection by verifying whether or not the correspondence between the input and output data of the application decryption process performed by the protection control module is correct. Furthermore, the present invention offers improved security against leaks of the application output data by the detection modules by having a plurality of detection modules verify different data blocks.