Patent · US Active

Method for exchanging messages between security-relevant devices

US10862675B2 · kind B2 · utility

0Cited by

0References

8Claims

0Family size

Assignee

Siemens Mobility GmbH · DE

Inventors

Uwe Eckelmann-Wendt · Wolfenbüttel, DE
Stefan Gerken · Braunschweig, DE

Key dates

Filing date	Mar 1, 2017
Grant date	Dec 8, 2020
Priority date	—
Expiry date	Oct 12, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/105
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method exchanges messages with different security classes between security-relevant devices. Key pairs containing a private key and a public key corresponding to the private key are assigned to each security class, wherein the keys and key pairs of each security class differ from each other. Each security-relevant device has all the public keys for decrypting messages for each security class and the relevant private keys for encrypting messages corresponding to a security class that is lower than or equal to the security class of the security-relevant device. Upon receipt, the security class for the message is identified by decryption by use of the public key.

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