Patent · US Expired

Method and arrangement for data communication in a cryptographic system containing a plurality of entities

US7290135B2 · kind B2 · utility

1Cited by

4References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Steffen Fries · Baldham, DE
Wolfgang Klasen · Ottobrunn, DE
Gerald Volkmann · Birkenfeld, DE

Key dates

Filing date	Mar 29, 2002
Grant date	Oct 30, 2007
Priority date	—
Expiry date	Jul 6, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0836
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for data communication in a cryptographic system containing a plurality of entities is specified, in which the entities are arranged in a hierarchical structure. If a current entity in the structure is altered, those entities which are connected directly to the current entity's hierarchically superordinate entity are notified of the alteration.

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