Kapazitives Sensoren Anordnung auf einem Sicheren Element zur Erkennung von Manipulationen

Details

Veröffentlichungs-Nr.

EP3086255

Aktenzeichen

EP15164817

Anmeldetag

23. April 2015

Veröffentlichung

19. September 2018

Erteilung

19. September 2018

Rechtsraum

EP

IPC

G06F21/88G06F21/73G06F21/75G06F21/86H01L23/00

Abstract

A secure electronic apparatus and a method for determining that a secure electronic apparatus has been tampered with. The apparatus includes a memory and a plurality of sensors which each to receive an input signal and output a digital signal determined by the input signal and by a physical quantity sensed by the sensor (e.g. capacitance). A measurement routine includes applying a plurality of input signal values to the sensors and, for each input signal value, using the digital output signals of each sensor to determine a combined output result. The combined output results of the measurement routine are compared with a set of combined output results stored in the memory. A detected a difference between the combined output results of the measurement routine and the set of combined output results stored in the memory can be used to determine that the secure electronic apparatus has been tampered with.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete