Abstract: A cryptographical apparatus for converting input bit sequences, whose overflow-free arithmetic addition results in a secret, into output bit sequences whose logic XORing results in the secret. The apparatus comprises a data interface for providing a first input bit sequence and a second input bit sequence and a processing circuit configured to a) gate the first input bit sequence and the second input bit sequence to obtain a logic result indicating overflow bit positions at which both the first input bit sequence and the second input bit sequence have a value of one; and to b) change the first and/or second input bit sequence at at least one overflow bit position. The processing circuit is configured to repeatedly perform steps a) and b) by using the respectively changed input bit sequences, until the logic result indicates no further overflow bit position and the output bit sequences are obtained.

Abstract: A method is provided for conducting an operation, the method including: determining a first result based on combining a first input with a first mask; determining a second result based on combining a second input with a second mask, the first mask and the second mask fulfilling a precondition; and conducting the operation based on the first result and the second result. A corresponding device is also provided.

Abstract: According to an embodiment, a data processing device is described comprising a deformer configured to deform a first data block in accordance with a first seed, a seed generator configured to generate a sequence of second seeds, wherein the sequence of second seeds comprises the first seed, a cryptographic processor configured to receive the deformed first data block and, for each second seed, to deform the deformed first data block in accordance with the second seed, to generate a sequence of second data blocks and to cryptographically process each second data block of the sequence of second data blocks to generate a sequence of processed data blocks and an extractor configured to extract a result of the cryptographic processing of the first data block from the sequence of processed data blocks.

Abstract: A motor vehicle supply network, in particular a 48V on-board power supply of a motor vehicle, contains a current source, a power distributor connected to the current source via a supply current path, and at least one load connected to the power distributor via a load current path with an integrated semiconductor switch. A current-measuring unit, a voltage-measuring unit and a monitoring unit are integrated into the power distributor. The monitoring unit is configured in such a way that same detects an imminent fault based on the measurement data of the current-measuring unit and/or the measurement data of the voltage-measuring unit, and in such a way that same initiates a switching-off of the at least one load using the semiconductor switch. Both imminent over-current faults and imminent arc faults are detected as an imminent fault.

Abstract: A cryptographical apparatus for converting input bit sequences, whose overflow-free arithmetic addition results in a secret, into output bit sequences whose logic XORing results in the secret. The apparatus comprises a data interface for providing a first input bit sequence and a second input bit sequence and a processing circuit configured to a) gate the first input bit sequence and the second input bit sequence to obtain a logic result indicating overflow bit positions at which both the first input bit sequence and the second input bit sequence have a value of one; and to b) change the first and/or second input bit sequence at at least one overflow bit position. The processing circuit is configured to repeatedly perform steps a) and b) by using the respectively changed input bit sequences, until the logic result indicates no further overflow bit position and the output bit sequences are obtained.

Abstract: A method is provided for conducting an operation, the method including: determining a first result based on combining a first input with a first mask; determining a second result based on combining a second input with a second mask, the first mask and the second mask fulfilling a precondition; and conducting the operation based on the first result and the second result. A corresponding device is also provided.

Abstract: According to one embodiment, a method for protecting data is provided comprising receiving a plurality of data symbols, determining a sequence of checksum symbols wherein the checksum symbols are determined to be equal to the checksum symbols of the last iteration of an iterative checksum symbol generation process, wherein the determining of the checksum symbols includes at least one of randomly generating the initial values, randomly determining an order of the data symbols in which the contributions of the data symbols to the checksum symbols are incorporated into the checksum symbols and masking each data symbol and using the masked data symbols as data symbols for determining the checksum symbols and which includes storing at least some of the checksum values as checksum for the data symbols.

Abstract: A method for performing an operation based on at least two operands is proposed, in which steps of the operation are performed in time-randomized fashion. In addition, an apparatus, a computer program product and a computer-readable storage medium are accordingly specified.

Abstract: According to an embodiment, a data processing device is described comprising a deformer configured to deform a first data block in accordance with a first seed, a seed generator configured to generate a sequence of second seeds, wherein the sequence of second seeds comprises the first seed, a cryptographic processor configured to receive the deformed first data block and, for each second seed, to deform the deformed first data block in accordance with the second seed, to generate a sequence of second data blocks and to cryptographically process each second data block of the sequence of second data blocks to generate a sequence of processed data blocks and an extractor configured to extract a result of the cryptographic processing of the first data block from the sequence of processed data blocks.

Abstract: A bicycle servicing system includes: a transceiver device for arrangement on a bicycle; a bicycle data processing device arranged on the bicycle and connected with the transceiver device; a stationary data processing device for processing bicycle- and/or cyclist-specific data received from the transceiver device, the data processing device being adapted to be in communication with the transceiver device via mobile data transmission; and a data output device for outputting data transmitted from the data processing device, the data output device being adapted to be in communication with the data processing device via mobile data transmission, and/or a further data processing device for further processing of the data transmitted from the data processing device, the further data processing device being adapted to be in communication with the data processing device via data transmission.

Abstract: A motor vehicle supply network, in particular a 48V on-board power supply of a motor vehicle, contains a current source, a power distributor connected to the current source via a supply current path, and at least one load connected to the power distributor via a load current path with an integrated semiconductor switch. A current-measuring unit, a voltage-measuring unit and a monitoring unit are integrated into the power distributor. The monitoring unit is configured in such a way that same detects an imminent fault based on the measurement data of the current-measuring unit and/or the measurement data of the voltage-measuring unit, and in such a way that same initiates a switching-off of the at least one load using the semiconductor switch. Both imminent over-current faults and imminent arc faults are detected as an imminent fault.

Abstract: According to one embodiment, a method for protecting data is provided comprising receiving a plurality of data symbols, determining a sequence of checksum symbols wherein the checksum symbols are determined to be equal to the checksum symbols of the last iteration of an iterative checksum symbol generation process, wherein the determining of the checksum symbols includes at least one of randomly generating the initial values, randomly determining an order of the data symbols in which the contributions of the data symbols to the checksum symbols are incorporated into the checksum symbols and masking each data symbol and using the masked data symbols as data symbols for determining the checksum symbols and which includes storing at least some of the checksum values as checksum for the data symbols.

Abstract: A method for performing an operation based on at least two operands is proposed, in which steps of the operation are performed in time-randomized fashion. In addition, an apparatus, a computer program product and a computer-readable storage medium are accordingly specified.