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. 17, 2015
Filed:
Aug. 30, 2013
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Inventors:
Hiroshi Isozaki, Kawasaki, JP;
Atsushi Hirota, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/04 (2006.01); G06F 12/14 (2006.01); G06F 21/70 (2013.01);
U.S. Cl.
CPC ...
G06F 12/1408 (2013.01); G06F 12/1433 (2013.01); G06F 21/70 (2013.01);
Abstract
According to one embodiment, a first processor of an information processing apparatus switches between a secure mode and a non-secure mode and reports its mode. When the first processor is in the secure mode, a second processor accesses to a protected area of a storage module. A boot program for the first processor and a program which activates the first processor in the non-secure mode are verified. Furthermore, a program which activates the first processor in the secure mode is encrypted, and its decryption key is stored in the protected area of the storage module.