Patent Document ID: 20140032990
Application ID: 13950894
Patent Flag: 0

Claim One:
1. A decoder for evaluating an ascertained form of physical unclonable properties of a physical object, the decoder comprising: a feedback shift register having a plurality of register elements configured to implement a simplex code and configured to take a register vector that is fed into the feedback shift register as a basis for determining an appropriate syndrome and storing it in the plurality of register elements; a combination device configured to algebraically combine at least one subset of the register elements of the feedback shift register and to provide a resultant combination result vector; a majority decision-making unit configured to ascertain a most frequently occurring value within the combination result vector and to provide it as a decision result; and an input selector configured to: in a first state, selectively connect an input of the feedback shift register to an input interface arrangement or to an output of the majority decision-making unit, to provide an input vector, wherein the input vector is provided by the input interface arrangement and corresponds to the ascertained form of the physical unclonable properties as a register vector and, and in a second state, provide a decision vector, wherein the decision vector comprises the decision result and further decision results as a register vector.