Patent · US Active

Devices and methods for the generating and authentication of at least one data packet to be transmitted in a bus system (BU), in particular of a motor vehicle

US12021999B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Conti Temic microelectronic GmbH · DE

Inventors

Wolfgang Schulter · Meersburg, DE
Wolfgang Schrempp · Immenstaad am Bodensee, DE

Key dates

Filing date	Mar 26, 2020
Grant date	Jun 25, 2024
Priority date	—
Expiry date	Feb 3, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/84
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Disclosed are an apparatus and a method for generating at least one data packet to be transmitted in a bus system of a motor vehicle, wherein before transmitting the at least one data packet comprising the message to be included in the data packet a bus subscriber transmitting the data packet uses a first encryption apparatus to generate a message authentication code that is likewise to be included in the data packet by using a first encryption method to generate an encrypted message code from the message with a first key, using a second encryption method to generate an encrypted count from a count by means of a second key, and using a logic operation to generate the message authentication code to be transmitted from the encrypted message code and from the encrypted count, and an apparatus and a method for authentication checking such data packets at the receiver.

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