Patent · US Active

Obfuscating execution traces of computer program code

US8522047B2 · kind B2 · utility

16Cited by

6References

17Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Johan Eker · Lund, SE
Björn Johansson · Lund, SE
Carl Von Platen · Malmö, SE

Key dates

Filing date	Jun 25, 2008
Grant date	Aug 27, 2013
Priority date	—
Expiry date	May 26, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2145
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A computer-implemented method of generating tamper-protected computer program code. The method comprises obtaining a representation of the computer program code, the computer program being adapted to cause a data processing system to perform a plurality of computational tasks in a first order of execution, each computational task being represented in the representation of the computer program code by at least one program statement; obtaining a plurality of alternative orders of execution of the computational tasks; generating an executable representation of the program code adapted to cause a data processing system to select a randomized order of execution from the plurality of alternative orders of execution and to execute the computational tasks in the selected randomized order of execution.

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