Patent · US Active

Software tamper resistance

US11899758B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

NAGRAVISION SARL · CH

Inventors

Laurent DORE · Crissier, CH
Christian Mönch · Cheseaux, CH
Brecht Wyseur · Cheseaux, CH

Key dates

Filing date	Aug 30, 2019
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Aug 30, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/1066
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The present disclosure relates to software tampering resistance. In one aspect, a method for generating protected code is provided, comprising identifying a primary function in code to be obscured, the primary function being a function used to verify the integrity of the code run-time. The method then comprises generating a finite state machine from the primary function, wherein a state of the finite state machine at a given instance defines an element of the primary function to be executed. The method then comprises distributing the finite state machine throughout the code to obscure one or more areas of the code.

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