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Virtual Proofs of Reality

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Figure

Figure 1.The general setting of public and private VPs based on witness objects (WOs)
Figure 2.The basic set-up of an optical virtual proof of relative distance. Both optical PUFs participate in the interference process.
Figure 3.A system composed of two optical PUFs is used in our VPs of destruction: A first inner PUF, and a second outer PUF, which encapsulates thefirst PUF
Figure 4.The idea behind virtual proofs in its most general form: Complex physical systems are converted into digital data in a way that allows provingthat the digital data is “correct” and “authentic”, i.e., that it corresponds to a real, actual physical system or physical process with the claimed properties.This conversion is accomplished via so-called “witness objects” (red arrow), without using classical secret keys or tamper proof hardware.

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