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:
Dec. 24, 2019

Filed:

Jul. 26, 2013
Applicant:

Infineon Technologies Ag, Neubiberg, DE;

Inventors:

Berndt Gammel, Markt-Schwaben, DE;

Stefan Mangard, Munich, DE;

Steffen Sonnekalb, Munich, DE;

Assignee:

Infineon Technologies AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/58 (2006.01); G06F 21/71 (2013.01); G06F 21/86 (2013.01);
U.S. Cl.
CPC ...
G06F 7/582 (2013.01); G06F 21/71 (2013.01); G06F 21/86 (2013.01); G06F 7/584 (2013.01); G06F 2207/583 (2013.01);
Abstract

An apparatus for detecting integrity violation includes a feedback shift register including a plurality of registers connected in series, and a feedback function unit connected between an output of a number of the registers and an input of at least one of the registers. The apparatus further includes an integrity violation detector adapted to determine as to whether a sequence of values at an input or output of at least one of the registers, or a logic combination thereof, is a non-constant sequence or a constant sequence. The apparatus is further adapted to output an indication that the feedback shift register is in an integral state if the sequence of values is a non-constant sequence, or to output an indication that the feedback shift register is subjected to an integrity violation if the sequence of values is a constant sequence.


Find Patent Forward Citations

Loading…