Patent · US Active

Access-controlled data storage medium

US9288038B2 · kind B2 · utility

0Cited by

26References

17Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Harald Vater · Gießen, DE
Hermann Drexler · Munich, DE
Eric M. Johnson · Brooklyn, US

Key dates

Filing date	May 23, 2013
Grant date	Mar 15, 2016
Priority date	—
Expiry date	Aug 15, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/08
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a data carrier having a semiconductor chip. In order to prevent an attacker from determining secret data of the chip from intercepted signal patterns of the chip, security-relevant operations are performed only with commands or command strings of the operating program whose use does not permit the processed data to be inferred from the signal patterns.

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