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Motor vehicle control equipment with cryptographic device

A technology for controlling equipment and cryptographic devices, applied to secure communication devices, computer security devices, usage of multiple keys/algorithms, etc.

Inactive Publication Date: 2016-08-17
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the activation code contains the vehicle chassis number and the control equipment number, so the use of the software is limited to the combination of the vehicle chassis number and the control equipment number

Method used

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  • Motor vehicle control equipment with cryptographic device

Examples

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Effect test

Embodiment Construction

[0026] The drawing shows a control unit 10 which is installed in a passenger vehicle (not shown in detail). In relation to the exemplary embodiment on which the figures are based, it is assumed that the control device is the navigation device of the passenger car. However, it can also generally be a control device that provides any other functionality than navigation assistance functions.

[0027] The route calculation required for the navigation assistance function and the driving instructions generated by the digital indicator of the navigation device (not shown) are controlled by the control device 12 . The control device 12 is coupled to an encryption device 14 of the control device 10 . The output of encryption device 14 may be transmitted to compression device 16 . The output value 18 of the compression device 16 can be transmitted to the control device 12 .

[0028] The control device 12 , the encryption device 14 and the compression device 16 can each be a circuit a...

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PUM

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Abstract

The invention relates to a control device (10) for a motor vehicle, which is not to be exchanged between individual motor vehicles by unauthorized persons. For motor vehicles, it should therefore be possible to activate individual functions of the control device ( 10 ) only for certain motor vehicles. For this purpose, a first cryptographic key ( 26 ) and a second cryptographic key ( 30 ) are stored in the control device ( 10 ) according to the invention. The cryptographic means (14) is designed to first encrypt a first message (38) with one of the cryptographic keys (26), then encrypt the encrypted result with another cryptographic key (30), and finally encrypt the second encrypted The result is provided as a third cryptographic key (34) for encryption and / or decryption of another message (24). The invention also relates to a method for configuring a control device in a motor vehicle and to a motor vehicle.

Description

technical field [0001] The invention relates to a control unit for a motor vehicle, in which cryptographic means for encrypting and / or decrypting messages are provided. The invention also relates to a motor vehicle having such a control device and a method for configuring the control device in a motor vehicle. Background technique [0002] In motor vehicles, functions such as engine control, navigation assistance or telephone are provided by separate control devices. It is desirable that the control device cannot be changed between motor vehicles by unauthorized personnel. Therefore, on the one hand it is desirable that a stolen control device cannot be used in another motor vehicle. On the other hand, the installation of used control devices into the motor vehicle by untrained personnel can endanger the safety of motor vehicle users. [0003] An identification system for a control unit in a motor vehicle is known from DE 10 2006 040 228 A1, by means of which it can be ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08
CPCH04L9/14H04L2209/84H04L9/0866G06F21/445H04L9/0816
Inventor S·盖格尔I·莱登德克尔C·施马尔
Owner AUDI AG
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