Beschrijving van impactAn important part of the research on information security that Boris Skoric pursues involves physics based quantum security, in which authentication and encryption methods do not depend on computational assumptions, but on physics assumptions.
An important example is Quantum-Secure Authentication (QSA), in which use is made of the fact that quantum states cannot be cloned. This method employs so called Physical Uncloneable Functions (PUFs), in which complex information is physically embedded in some system. This information can be probed in many ways and produces a unique response, which is then used for security purposes.
The best-known examples of such PUFs are optical PUFs, such as white paints with a huge amount of nanoparticles, which can scatter incoming light in many ways, creating a unique scattering pattern. This is similar to the speckle pattern observed when lasers hit a scattering surface. Such speckle patterns were indeed used to make a prototype of a quantum-secure credit card. These type of developments might also be realized using quantum nanophotonic devices, as studied by Andre Fiore see also the section on Quantum Nanophotonics.
Other quantum security research involves Quantum Key distribution protocols that are noise-resilient and Quantum Key Recycling.
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