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:
Jun. 30, 2015
Filed:
Dec. 21, 2012
Applicant:
Nxp B.v., Eindhoven, NL;
Inventor:
Juergen Nowottnick, Hamburg, DE;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/55 (2013.01); G06F 21/72 (2013.01); G06F 21/87 (2013.01); G06F 21/76 (2013.01); G06F 21/75 (2013.01);
U.S. Cl.
CPC ...
G06F 21/558 (2013.01); G06F 21/72 (2013.01); G06F 21/87 (2013.01); G06F 21/76 (2013.01); G06F 21/55 (2013.01); G06F 21/75 (2013.01);
Abstract
According to an example embodiment, a device provides cryptographic processing functions using secret data. The device can include protection from differential power analysis (DPA). The encryption processing circuit and its memory can be decoupled from external power source(s) during encryption-related computations. A local power storage element, such as a capacitive element, can provide power while the encryption processing circuit is decoupled from the external power source(s). The local power storage element can then be reconnected and charged once the encryption-related computations are completed or paused.