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.

Date of Patent:
Apr. 29, 2014

Filed:

Jun. 28, 2012
Applicants:

Tadashi Tsuji, Tachikawa, JP;

Tsuyoshi Nishida, Akishima, JP;

Inventors:

Tadashi Tsuji, Tachikawa, JP;

Tsuyoshi Nishida, Akishima, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/02 (2006.01); G06F 1/00 (2006.01); G06F 21/57 (2013.01); G06F 21/34 (2013.01);
U.S. Cl.
CPC ...
G06F 1/00 (2013.01); G06F 21/34 (2013.01); G06F 21/572 (2013.01);
Abstract

According to one embodiment, a storage stores secret data, first identification data, and a first random key. A generation module generates first authentication data from the secret data, first identification data, and second identification data of a removable medium. A first verification module determines whether the first authentication data and second authentication in the removable medium are identical. A second verification module determines whether the first random key and a second random key in the removable medium are identical, if the first and second authentication data are identical. An activation module activates the data processing apparatus if the first and second random keys are identical.


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