Data transmission unit for a vehicle

• US 9,871,659 B2
• Filed: 11/05/2015
• Issued: 01/16/2018
• Est. Priority Date: 11/06/2014
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Maise, Timo
• Primary Examiner(s): Cribbs, Malcolm
• Application Number:
  US14/933,439
• Publication Number:
  US 20160135054A1
• Time in Patent Office: 803 Days
• Field of Search: None
• CPC Class Codes: H04L 2209/76 Proxy, i.e. using intermediary entity to perform cryptographic operations network architectures or network communication protocols using hop-by-hop encryption H04L63/0464
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/12 Detection or prevention of fraud
• CPC Class Codes: H04W 12/50 Secure pairing of devices
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]

Abstract

A method for transmitting data between a vehicle and a terminal, in which data to be transmitted are transmitted on the basis of at least one digital signature generated by a security module in a vehicle key for the vehicle, the vehicle key also comprising at least one interface for communicating with the terminal and/or the vehicle and at least one microprocessor, and the microprocessor being used to check a trustworthiness of the data to be transmitted via the interface. Also, a corresponding vehicle key and vehicle having a system for transmitting data.

Claims

1. A method for transmitting data between a vehicle and a terminal, in which data to be transmitted are transmitted on the basis of at least one private key stored by a security module in a vehicle key for the vehicle, the vehicle key also comprising at least one interface for communicating with the terminal and/or the vehicle and at least one microprocessor, and the microprocessor being used to check a trustworthiness of the data to be transmitted via the interface, in which data which are to be transmitted from the terminal to the vehicle are first of all transmitted to the interface of the vehicle key via a secure channel, whereupon at least one first digital signature is created by the security module included in the vehicle key and the data to be transmitted to the vehicle are sent back to the terminal together with the at least one first digital signature, whereupon the terminal forwards the data to be transmitted to the vehicle with the at least one first digital signature, data to be transmitted from the vehicle to the terminal being provided with at least one second digital signature and being transmitted to the terminal, the terminal forwarding data received in this manner to the interface of the vehicle key for a check for trustworthiness, and the vehicle key forwarding a result of the check for trustworthiness to the terminal.

2. The method as claimed in claim 1, in which data which are to be transmitted from the vehicle to the terminal and/or to the vehicle key are transmitted by a system which is included in the vehicle and comprises an antenna and a transceiver.

3. The method as claimed in claim 2, in which the system is solely used for communication in a vehicle-specific communication standard.

4. The method as claimed in claim 2, in which the system is used for communication in any desired communication standard.