CIRCUIT ARRANGEMENT, DATA PROCESSING DEVICE COMPRISING SUCH CIRCUIT ARRANGEMENT AS WELL AS METHOD FOR IDENTIFYING AN ATTACK ON SUCH CIRCUIT ARRANGEMENT
First Claim
1. A circuit arrangement, in particular an active shield, comprisingat least one data signal generating device being designed for generating test data and expected test data,at least one group of data lines being designed for carrying data signals, in particular regular data and/or the test data, andat least one detector module being designed for identifying at least one attack on the circuit arrangement, the detector module comprisingat least one transmitting device for transmitting the test data,at least one receiving device for receiving the test data having been transmitted from the transmitting device andat least one evaluation device for comparing the received test data with the expected test data and for ascertaining or determining any discrepancy between the received test data and the expected test data,characterized byat least one data line selection device for selecting part of the group of data lines to carry new or most recent test data having been generated by the data signal generating device.
10 Assignments
0 Petitions
Accused Products
Abstract
In order to further develop a circuit arrangement (100), in particular an active shield, as well as a method for identifying at least one attack on the circuit arrangement (100), wherein test data are generated, the test data are transmitted via at least one group of data lines (50) being designed for carrying data signals in the form of regular data and/or in the form of the test data, the transmitted test data are received, the received test data are compared with expected test data, and any discrepancy between the received test data and the expected test data is ascertained or determined, in such way that less power is required for examining, in particular for identifying, if the circuit arrangement (100) has been attacked, it is proposed that part of the group of data lines (50) is selected to carry new or most recent test data having been generated.
21 Citations
11 Claims
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1. A circuit arrangement, in particular an active shield, comprising
at least one data signal generating device being designed for generating test data and expected test data, at least one group of data lines being designed for carrying data signals, in particular regular data and/or the test data, and at least one detector module being designed for identifying at least one attack on the circuit arrangement, the detector module comprising at least one transmitting device for transmitting the test data, at least one receiving device for receiving the test data having been transmitted from the transmitting device and at least one evaluation device for comparing the received test data with the expected test data and for ascertaining or determining any discrepancy between the received test data and the expected test data, characterized by at least one data line selection device for selecting part of the group of data lines to carry new or most recent test data having been generated by the data signal generating device.
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7. A method for identifying at least one attack on at least one circuit arrangement, in particular on at least one active shield, wherein
test data are generated, the test data are transmitted via at least one group of data lines being designed for carrying data signals in the form of regular data and/or in the form of the test data, the transmitted test data are received, the received test data are compared with expected test data, and any discrepancy between the received test data and the expected test data is ascertained or determined, characterized in that part of the group of data lines is selected to carry new or most recent test data having been generated.
Specification