Motor vehicle display device, motor vehicle electronic system, motor vehicle, method for displaying data and a computer program product
First Claim
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1. A motor vehicle display apparatus having an electronic appliance configured for mounting in a motor vehicle, the electronic appliance comprising:
- a first memory area for storing data, wherein the comprises motor vehicle information;
a second memory area for storing at least one first certificate;
a first interface for receiving a first signal and a signature for the first signal from a transmitter external to the motor vehicle;
a validity checking module, the validity checking module capable of checking the validity of the signature of the first signal using the first certificate;
a signal generation module, the signal generation module capable of accessing data from the first memory area in response to the first signal and generating a second signal carrying a representation of the accessed data;
a display actuating module responsive to the second signal, the display actuating module capable of actuating a display to visually output the representation of the accessed data;
a fourth memory area for storing a motor vehicle identifier; and
a tag verification module;
wherein the second signal is generated and/or output only if the signature is valid;
wherein the motor vehicle identifier explicitly identifies a motor vehicle with which the motor vehicle display apparatus is associated;
wherein the fourth memory area is a protected memory area;
wherein the first interface is designed to receive a message;
wherein the message contains at least the first signal, a tag and the signature of the first signal and/or of the tag;
wherein the tag verification module is capable of checking whether the tag matches the motor vehicle identifier stored in the fourth memory area andwherein a prerequisite for the generation and/or output of the second signal is that the tag and the motor vehicle identifier match.
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Abstract
The invention relates to a motor vehicle display apparatus having an electronic appliance containing:
- a first memory area (117) for storing data (109), wherein the data contain a motor vehicle license number,
- a second memory area (119) for storing at least one first certificate (178),
- a first interface (103) for receiving a first signal (109′) and a signature (111′, 113′) for the first signal from a transmitter (107′),
- means (123) for checking the validity of the signature of the first signal using the first certificate,
- means (139) for generating a second signal on the basis of the reception of the first signal,
- means (127) for actuating a display apparatus (136) to reproduce the data stored in the first memory area and to visually output the second signal,
wherein the second signal is generated and/or output only if the signature is valid.
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Citations
24 Claims
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1. A motor vehicle display apparatus having an electronic appliance configured for mounting in a motor vehicle, the electronic appliance comprising:
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a first memory area for storing data, wherein the comprises motor vehicle information; a second memory area for storing at least one first certificate; a first interface for receiving a first signal and a signature for the first signal from a transmitter external to the motor vehicle; a validity checking module, the validity checking module capable of checking the validity of the signature of the first signal using the first certificate; a signal generation module, the signal generation module capable of accessing data from the first memory area in response to the first signal and generating a second signal carrying a representation of the accessed data; a display actuating module responsive to the second signal, the display actuating module capable of actuating a display to visually output the representation of the accessed data; a fourth memory area for storing a motor vehicle identifier; and a tag verification module; wherein the second signal is generated and/or output only if the signature is valid; wherein the motor vehicle identifier explicitly identifies a motor vehicle with which the motor vehicle display apparatus is associated; wherein the fourth memory area is a protected memory area; wherein the first interface is designed to receive a message; wherein the message contains at least the first signal, a tag and the signature of the first signal and/or of the tag; wherein the tag verification module is capable of checking whether the tag matches the motor vehicle identifier stored in the fourth memory area and wherein a prerequisite for the generation and/or output of the second signal is that the tag and the motor vehicle identifier match. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 22)
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13. A motor vehicle display apparatus having an electronic appliance and a motor vehicle appliance,
the electronic appliance comprising: -
a first memory area for storing data, wherein the data contains a motor vehicle license number; a second memory area for storing at least one first certificate; a first interface for receiving a first signal and a signature for the first signal from a transmitter; a validity checking module, the validity checking module capable of checking the validity of the signature of the first signal using the first certificate; a signal generation module, the signal generation module capable of for generating a second signal on the basis of the reception of the first signal; and a display actuating module, the display actuating module capable of actuating a display apparatus to reproduce the data stored in the first memory area and to visually output the second signal, wherein the second signal is generated and/or output only if the signature is valid, and the motor vehicle appliance comprising; a second interface for setting up a first connection to a first ID token in order to read the data from the first ID token; a fifth memory area for storing the first certificate; a sixth memory area for storing a third certificate, wherein the third certificate is associated with the motor vehicle electronics appliance; a cryptographic authentication module, the cryptographic authentication module capable of cryptographic authentication to the first ID token using the first and/or the third certificate; a third interface for receiving the at least first, second and third certificates; and a fourth interface for actuating at least one of the motor vehicle display apparatuses via the first interface for the purpose of updating the data and the first and second certificates.
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14. A method for visual output from a display of a display apparatus of a motor vehicle, the method comprising:
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setting up a first connection between a motor vehicle electronics appliance of the motor vehicle and an external transmitter; accessing a third memory area in the motor vehicle electronics appliance for the purpose of reading a third certificate; cryptographically authenticating the motor vehicle electronics appliance and the external transmitter unilaterally or to one another using the third certificate; receiving a first signal, a signature for the first signal, and a tag from an external transmitter via the first connection after the authentication has been performed successfully; checking the validity of the signature of the first signal using a first certificate stored in a second memory area of the motor vehicle electronic appliance; and checking, in a tag verification module of the motor vehicle electronic appliance, whether the tag matches a motor vehicle identifier stored in a protected memory of the motor vehicle electronic appliance; if the signature is valid and the tag matches the motor vehicle identifier; forwarding the first signal and the signature of the first signal from the motor vehicle electronics appliance to the motor vehicle display apparatus, or the motor vehicle electronics appliance; accessing motor vehicle data contained in a first memory area of the motor vehicle electronic appliance in response to the first signal; generating a second signal carrying a representation of the accessed data; and actuating the display in response to the second signal to visually output the representation of the accessed data. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 23, 24)
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Specification