Patent · US Active

Authentication method and communications system used for authentication

US8458472B2 · kind B2 · utility

1Cited by

7References

24Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Braun · Altensteig, DE
Erwin Hess · Ottobrunn, DE
Anton Kargl · Birkenfeld, DE
Bernd Meyer · Munich, DE

Key dates

Filing date	Sep 26, 2007
Grant date	Jun 4, 2013
Priority date	—
Expiry date	Apr 30, 2029

Classification

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

Abstract

An authentication method authenticates between subscribers of a communications system using an asymmetric elliptic curve encryption algorithm. The method involves providing a first and at least one second subscriber having a first or second secret key known only to the respective subscriber and a public key; authenticating an inquiry transmitted by the first subscriber with respect to the validity of the first certificate contained therein and associated with the first subscriber; calculating the response of the second subscriber associated with the inquiry; randomized encryption of the calculated response and a second certificate associated with the second subscriber using the public key; decryption and authentication of the response transmitted by the second subscriber with respect to the validity of the second certificate contained therein.

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