Patent · US Active

Automatic reset filter deactivation during critical security processes

US10726122B2 · kind B2 · utility

2Cited by

6References

20Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Markus Regner · Munich, DE
Jürgen W. Frank · Munich, DE
Stefan Doll · Obermoschel, DE

Key dates

Filing date	Jul 3, 2017
Grant date	Jul 28, 2020
Priority date	—
Expiry date	Nov 22, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH03K19/17768
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method, system, and apparatus are provided for preventing glitch attacks by using a glitch processing hardware unit (1) to deactivate a glitch filter connected between the monitored line and a reset processing unit in response to detecting a voltage glitch on a monitored line during a specified security system sequence and (2) to automatically drive a requested reaction in response to the voltage glitch by driving one of a plurality of configurable reactions comprising a device reset reaction and a process restart request, thereby preventing the voltage glitch from maliciously influencing the specified security system sequence.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.