Patent · US Active

Hardened white box implementation 1

US10438513B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

GIESECKE+DEVRIENT MOBILE SECURITY GMBH · DE

Inventors

Hermann Drexler · Munich, DE
Sven Bauer · Vaterstetten, DE
Jürgen Pulkus · Hersbruck, DE

Key dates

Filing date	Oct 30, 2015
Grant date	Oct 8, 2019
Priority date	—
Expiry date	Jul 26, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/16
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The invention provides a processor device having an executable, white-box-masked implementation of a cryptographic algorithm implemented thereon. The white-box masking comprises an affine mapping A, which is so designed that every bit in the output values w of the affine mapping A depends on at least one bit of the obfuscation values y, thereby attaining that the output values w of the affine mapping A are statistically balanced.

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