Patent ID: 9166795
Filing Date: 2015-10-20
Classification: G09C,H04L

Abstract:
1. A device for forming a signature from at least one of an input signal and a signal that is a function of the input signal, comprising: a plurality of transformation elements, each having a finite-state machine, to which, on an input end, in each case at least one of an input signal and a signal that is a function of the input signal, is able to be fed; and a plurality of groups of transformation elements, and wherein in each case the at least one of the same input signal and the same signal that is a function of the input signal being feedable to all transformation elements of the same group; wherein all of the finite-state machines are similar, in particular initializable, and configured so that each finite-state machine always respectively has a different state from all of the other finite-state machines, and wherein the signature is formable as a function of the state data of at least one finite-state machine, so as to render at least more difficult side channel attacks based on statistical analysis, which analysis occurs from outside the device.