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:
Sep. 08, 2011
Applicant:
Oliver Gibis, Munich, DE;
Inventor:
Oliver Gibis, Munich, DE;
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/04 (2006.01); G06F 11/00 (2006.01); G06F 12/14 (2006.01); G06F 11/30 (2006.01); G06F 21/78 (2013.01); G06F 21/55 (2013.01); G06F 21/71 (2013.01); G06F 21/86 (2013.01); G06K 19/073 (2006.01);
U.S. Cl.
CPC ...
G06F 21/78 (2013.01); G06F 21/558 (2013.01); G06F 21/71 (2013.01); G06F 21/86 (2013.01); G06K 19/07309 (2013.01);
Abstract
A method in a portable data carrier for safeguarding the data carrier against external attacks on the data carrier, wherein at least one counter is employed in the data carrier. A specified command is safeguarded such that it is executed by the data carrier only when the at least one counter lies in a specified values range. The at least one counter is decremented before an execution of the command and incremented only when the command has been executed without interruption. The at least one counter here is settable multiple times, in particular even after the issuance of the data carrier to a user.