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:
Sep. 20, 2016
Filed:
Mar. 07, 2014
Applicant:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Inventor:
Aki Fukuda, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/00 (2006.01); H04L 9/08 (2006.01); G07F 7/10 (2006.01); H04L 29/06 (2006.01); G06F 7/12 (2006.01);
U.S. Cl.
CPC ...
H04L 9/0877 (2013.01); G07F 7/1016 (2013.01); H04L 29/0619 (2013.01); G06F 7/12 (2013.01); H04L 29/06394 (2013.01);
Abstract
According to an embodiment, a smart card includes a communication section, a generation part, a first record section and an erasure section. The communication section transmits and receives data with the external device. The generation section generates a session key according to the command which is received by the communication section and requires generation of a session key. The first record section stores the session key generated by the generation section. The erasure section erases the session key when a holding period of the session key stored in the first record section exceeds a threshold.