Patent · US Active

Method and system for the manipulation-protected generation of a cryptographic key

US9614820B2 · kind B2 · utility

0Cited by

5References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rainer Falk · Poing, DE
Florian Kohlmayer · Rödental, DE
Rainer SIEMENS AKTIENGESELLSCHAFT · Munich, DE

Key dates

Filing date	Feb 8, 2007
Grant date	Apr 4, 2017
Priority date	—
Expiry date	Nov 12, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/805
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The embodiments relate to a near field communication system including a plurality of near field communication devices which communicate with each other via a radio interface. During generation of a common cryptographic key between the near field communication devices of the near field communication system, at least one of the two near field communication devices monitors during generation of the cryptographic key via the radio interface in a generation period whether an additional near field communication device which could be a potential active attacker communicates with one of the near field communication devices via the radio interface. If such a suspicious type of communication is detected, generation of the common cryptographic key is optionally terminated.

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