Motor Vehicle Control Device Data Transfer System And Process
First Claim
1. Data transfer system for programming motor vehicle control devices comprising:
- a first data-processing device (5) which is adapted to store data which is to be protected against unauthorized access;
a second data-processing device (9); and
,a third data-processing device (12), which is adapted to receive data which is to be protected against unauthorized access and is to be transferred to the first data-processing device (3, 5);
wherein the first data-processing device (5) and the second data-processing device (9) are adapted to be connected to one another via a first data transfer device and for data stored in the first data-processing device (5) to be transferred as first transfer data to the second data-processing device (9),wherein the second data-processing device (9) and the third data-processing device (12) are adapted to bring the second data-processing device (9) from an area at the first data-processing device (5) into a spatial area in which the second data-processing device (9) can be connected to the third data-processing device (12) indirectly or directly via a second data transfer device (11), to connect the second data-processing device (9) and the third data-processing device (12) indirectly or directly via the second data transfer device (11) and transfer at least a part of the first transfer data from the second data-processing device (9) to the third data-processing device (12) as second transfer data;
wherein the third data-processing device (12) is adapted to generate an authentication response value from the first transfer data or a part thereof by means of a generating function;
wherein the second data-processing device (9) and the third data-processing device (12) are adapted to transfer the authentication response value and data stored in the third data-processing device (12) as third transfer data to the second data-processing device (9);
wherein the first data-processing device (5) and the second data-processing device (9) are adapted to transfer the authentication response value and the other third transfer data or part thereof to the first data-processing device (5) as fourth transfer data; and
wherein the first data-processing device (5) is adapted to check the correctness of the authentication value by means of the first transfer data or parts thereof and to process the fourth transfer data further.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a motor vehicle control device data transfer system and process. In particular, it relates to such a system and process for the transfer of data, subject to the risk of tampering, from a central data-processing device (12) at the motor vehicle manufacturer'"'"'s to a motor vehicle data-processing device (5), such as an electronic drive engine control device, in which tamper-free data transfer is guaranteed. In this connection, an authentication enquiry value is generated by the vehicle data-processing device (5) and transferred to the central data-processing device (12) by means of a mobile data-processing device (9). This generates an authentication response value, which is transferred back by the same route with release data.
-
Citations
32 Claims
-
1. Data transfer system for programming motor vehicle control devices comprising:
-
a first data-processing device (5) which is adapted to store data which is to be protected against unauthorized access; a second data-processing device (9); and
,a third data-processing device (12), which is adapted to receive data which is to be protected against unauthorized access and is to be transferred to the first data-processing device (3, 5); wherein the first data-processing device (5) and the second data-processing device (9) are adapted to be connected to one another via a first data transfer device and for data stored in the first data-processing device (5) to be transferred as first transfer data to the second data-processing device (9), wherein the second data-processing device (9) and the third data-processing device (12) are adapted to bring the second data-processing device (9) from an area at the first data-processing device (5) into a spatial area in which the second data-processing device (9) can be connected to the third data-processing device (12) indirectly or directly via a second data transfer device (11), to connect the second data-processing device (9) and the third data-processing device (12) indirectly or directly via the second data transfer device (11) and transfer at least a part of the first transfer data from the second data-processing device (9) to the third data-processing device (12) as second transfer data; wherein the third data-processing device (12) is adapted to generate an authentication response value from the first transfer data or a part thereof by means of a generating function; wherein the second data-processing device (9) and the third data-processing device (12) are adapted to transfer the authentication response value and data stored in the third data-processing device (12) as third transfer data to the second data-processing device (9); wherein the first data-processing device (5) and the second data-processing device (9) are adapted to transfer the authentication response value and the other third transfer data or part thereof to the first data-processing device (5) as fourth transfer data; and wherein the first data-processing device (5) is adapted to check the correctness of the authentication value by means of the first transfer data or parts thereof and to process the fourth transfer data further. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. Motor vehicle control device data transfer process comprising:
-
(a) transfer of data stored in a first data-processing device as the first transfer data from the first data-processing device (5) to a second data-processing device (9); (b) bringing the second data-processing device into a spatial area in which the second data-processing device can be connected to a third data-processing device (12) indirectly or directly via a data transfer device (11); (c) transfer of at least a part of the first transfer data from the second data-processing device (9) to the third data-processing device (12) as second transfer data; (d) generation of an authentication response value from the first transfer data or a part thereof by the third data-processing device (12) by means of a generation function; (e) transfer of the authentication response value and data stored in the third data-processing device (12) as third transfer data from the third data-processing device (12) to the second data-processing device (9); (f) transfer of the authentication response value and the remaining third transfer data or a part thereof as fourth transfer data from the second data-processing device (9) to the first data-processing device (5); (g) checking the correctness of the authentication response value by means of the first transfer data or parts thereof by the first data-processing device (5); and (h) further processing of the fourth transfer data by the first data-processing device (5). - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
Specification