Advances In Cyber-Physical Systems
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Item Implementing quantum Fourier transform in a digital quantum coprocessor(Lviv Politechnic Publishing House, 2019-02-26) Hlukhov, Valerii; Lviv Polytechnic National UniversityIn this paper, the digital quantum coprocessor has been checked for the possibility of quantum Fourier transform, which is the main quantum operation of the Shor's algorithm. To do this, the model of the 4-qubit coprocessor has been created, its work has been simulated and it has been implemented in FPGA.Item Galois fields elements processing units for cryptographic data protection in cyber-physical systems(Lviv Politechnic Publishing House, 2017-12-03) Hlukhov, Valerii; Kostyk, Andrii; Zholubak, Ivan; Rahma, Mohammed; Lviv Polytechnic National UniversityCurrently, elliptic curves are the mathematical basis for digital signature processing. Elliptic curve points processing is based on the performance of operations in Galois field GF(2m) in normal or polynomial bases. Characteristics of multipliers for these bases are different. In this paper, the time complexity of software multipliers for binary Galois fields GF(2m) and fields GF(dn) was investigated. Fields with approximately the same number of elements were investigated. Elements of these fields were represented in a polynomial basis. It is established that the Galois field GF(3т) provides the greatest time complexity of software multiplication, and the prime Galois field GF(P) has the least time complexity. It is also shown that the use of polynomial basis allows, in contrast to the normal basis, to realize larger part of multiplier on FPGA chip.Item Satellite scientific data collection and accumulation system as a basis for cyber-physical systems construction(Publishing House of Lviv Polytechnic National University, 2016) Hlukhov, Valerii; Lukenyuk, Adolf; Shenderuk, Sergii; Lviv Polytechnic National University; Lviv Centre of Institute for Space Research of National Academy of Sciences and the State Space Agency of UkraineThe paper reviews technologies of computer systems the development of which has led to the emergence of cyber-physical systems – there are embedded computer systems, open systems interconnection model, multilayer computer systems, wireless communications, microelectromechanical systems, data protection technologies. It is noted that there are computer systems exist, whose parameters are close to those of cyber-physical systems ones, there are also groups of developers who have experience of in such systems designing. The satellite scientific data collection and accumulation system developed in Lviv Center of Institute for Space Research of NAS and SSA of Ukraine with the participation of Lviv Polytechnic National University Computers department is an example of such systems. In paper The main features of this system are described in the paper. The recommendations are given onf using it as the basis for the creation of advanced cyber-physical systems.