Abstract: A motor vehicle stores a first one-way hash of a password and an encrypted value from a second one-way hash of the password. A method for authenticating a device with respect to the vehicle includes the following: a PACE procedure is carried out so that the device and the motor vehicle determine the same session key; the motor vehicle generates a communication key on the basis of the session key and the encrypted one-way hash; and the device generates the communication key based on the session key and the second one-way hash.

Abstract: A motor vehicle stores a first one-way hash of a password and an encrypted value from a second one-way hash of the password. A method for authenticating a device with respect to the vehicle includes the following: a PACE procedure is carried out so that the device and the motor vehicle determine the same session key; the motor vehicle generates a communication key on the basis of the session key and the encrypted one-way hash; and the device generates the communication key based on the session key and the second one-way hash.

Abstract: A vehicle control system for an automatically opening and/or automatically closing flap, includes a programmable operating switch and a programmable electronic control device. The operating switch is a proximity sensor that is actuatable in a non-contact manner and, after the actuation occurs, generates an operation request signal as an input signal to the control device. In the presence of the operation request signal and, as required, of at least one further condition, the control device emits a command to a closing mechanism for opening or closing the flap. The control device and/or the operating switch is programmed such that the operation request signals are counted as long as at least a first defined condition has not yet been met, and that, when a defined maximal counter reading has been reached, the operation request signals will be ignored until at least a second defined condition has been met.

Abstract: The invention relates to an electrical system of a motor vehicle with control apparatuses, which communicate with one another by means of a data bus. To recognize manipulations to the electrical system of a motor vehicle, in particular on the software of the control apparatuses of the electrical system, and to derive suitable measures, it is proposed that a master security module is provided in a first control apparatus and a client security module is provided in each case in a plurality of the further second control apparatuses, and the master security module of the first control apparatus, preferably a central gateway control apparatus, signs a message and sends the signed message to at least one of the second control apparatuses by means of the data bus. The client security module of the second control apparatus checks the signed message received from the master security module as to whether it comes from an authorized master security module.

Abstract: A central check device is provided in a motor vehicle, to which device an enable message emitted by a first controller inside the vehicle or from a location outside the vehicle is supplied via a communication bus of the motor vehicle. The central check device evaluates the received enable message to identify the sequence control system to be enabled and the controller which comprises the sequence control system to be enabled. The central check device sends an enable command to the identified controller via the communication bus of the motor vehicle so as to enable the sequence control system which is to be enabled.

Abstract: A vehicle control system for an automatically opening and/or automatically closing flap, includes a programmable operating switch and a programmable electronic control device. The operating switch is a proximity sensor that is actuatable in a non-contact manner and, after the actuation occurs, generates an operation request signal as an input signal to the control device. In the presence of the operation request signal and, as required, of at least one further condition, the control device emits a command to a closing mechanism for opening or closing the flap. The control device and/or the operating switch is programmed such that the operation request signals are counted as long as at least a first defined condition has not yet been met, and that, when a defined maximal counter reading has been reached, the operation request signals will be ignored until at least a second defined condition has been met.

Abstract: An electric wiring system of a motor vehicle with several control devices that communicate with each other via a data bus, and with an immobilizer is provided. In order to create an electric wiring system of a motor vehicle that includes an immobilizer with high reliability the immobilizer includes at least a first and a second control device from the plurality of control devices and an authentication apparatus, in particular an authentication control device. The authentication information of the plurality of control devices is supplied via the data bus to the authentication apparatus. The authentication cancels the immobilizer of the vehicle when the authentication information transmitted from the first and the second control device corresponds to the authentication information expected for the particular control devices.

Abstract: A system and method are provided for direct data exchange between two or more vehicles for transmission of data relating to events having a negative effect on driving safety, via wireless communication such as WLAN in particular. Unambiguous identification information is assigned to each vehicle. To increase acceptance of such a system, the identification information of the respective vehicle is temporary and is formed on the basis of the current status of the vehicle.

Abstract: The invention relates to an electrical system of a motor vehicle with control apparatuses, which communicate with one another by means of a data bus. To recognise manipulations to the electrical system of a motor vehicle, in particular on the software of the control apparatuses of the electrical system, and to derive suitable measures, it is proposed that a master security module is provided in a first control apparatus and a client security module is provided in each case in a plurality of the further second control apparatuses, and the master security module of the first control apparatus, preferably a central gateway control apparatus, signs a message and sends the signed message to at least one of the second control apparatuses by means of the data bus. The client security module of the second control apparatus checks the signed message received from the master security module as to whether it comes from an authorised master security module.

Abstract: An electric wiring system of a motor vehicle with several control devices that communicate with each other via a data bus, and with an immobilizer is provided. In order to create an electric wiring system of a motor vehicle that includes an immobilizer with high reliability the immobilizer includes at least a first and a second control device from the plurality of control devices and an authentication apparatus, in particular an authentication control device. The authentication information of the plurality of control devices is supplied via the data bus to the authentication apparatus. The authentication cancels the immobilizer of the vehicle when the authentication information transmitted from the first and the second control device corresponds to the authentication information expected for the particular control devices.

Abstract: A central check device is provided in a motor vehicle, to which device an enable message emitted by a first controller inside the vehicle or from a location outside the vehicle is supplied via a communication bus of the motor vehicle. The central check device evaluates the received enable message to identify the sequence control system to be enabled and the controller which comprises the sequence control system to be enabled. The central check device sends an enable command to the identified controller via the communication bus of the motor vehicle so as to enable the sequence control system which is to be enabled.

Abstract: A system and method are provided for direct data exchange between two or more vehicles for transmission of data relating to events having a negative effect on driving safety, via wireless communication such as WLAN in particular. Unambiguous identification information is assigned to each vehicle. To increase acceptance of such a system, the identification information of the respective vehicle is temporary and is formed on the basis of the current status of the vehicle.

Abstract: In a method that solves a modeling problem of an input/output system in a computer, weighting function, which indicates deviations of measured output values of the real system from the output values of the model, is optimized in the computer by minimizing gradients. This minimization is accomplished by first the derivative of the weighting parameters relative to the system parameters, and then minimizing the derivative of the weighting function relative to an initial state vector.