Patent · US Active

Method for the secure determination of data

US8369514B2 · kind B2 · utility

5Cited by

5References

11Claims

0Family size

Assignee

Seimens Aktiengesellschaft · DE

Inventors

Michael Braun · Altensteig, DE
Anton Kargl · Birkenfeld, DE
Bernd Meyer · Munich, DE
Stefan Pyka · Borgo San Lazzaro, DE

Key dates

Filing date	Dec 19, 2006
Grant date	Feb 5, 2013
Priority date	—
Expiry date	Apr 15, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The aim of the embodiments is to provide a method for the secure processing of data, in which security is increased in relation to side channel attacks. To achieve this, operation codes for commanding co-processors are determined, for example for the bit-dependent transposition of register contents. The solution exploits the fact that as a result of the technical configuration for the co-processor, a shift of register contents, for example from register A to register B cannot be differentiated from the exterior from a shift from register A to register C.

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