Вимірювальна техніка та метрологія. – 2021. – Випуск 82, №2

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Measuring Equipment and Metrology : scientific journal. – Lviv : Lviv Politechnic Publishing House, 2021. – Volume 82, № 2. – 58 р.

Вимірювальна техніка та метрологія

Зміст (том 82, № 2)


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Content (Vol. 82, No 2)


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Author: search.filters.author.Yatsyshyn, Svyatoslav

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    Radio frequency identification in cyber-physical systems
    (Видавництво Львівської політехніки, 2021-02-23) Mašková, Kamila; Petrovska, Iryna; Ryshkovskyy, Oleksander; Yatsyshyn, Svyatoslav; Lviv Polytechnic National University
    Automated systems that are part of cyber-physical systems provide distribution of goods or prefabricated components, as well as their documenting and automatic tracking in real-time. Workpieces are marked with RFID transponders. RFID antennas allow contactless reading and/or recording of information, RFID electronics process and transmit it to the programmable logic controller via PROFIBUS DP, PROFINET, Ethernet IP, Ethernet TCP/IP, or EtherCAT interface. The peculiarities of the universal interface for the needs of cyber-physical systems equipped with RFID means and the main metrological characteristics of the latter are studied in the work.
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    Parallelization of RSA cryptographic algorithm based on CUDA technologies
    (Видавництво Львівської політехніки, 2021-02-23) Mochurad, Lesia; Kryvenchuk, Yuriy; Yatsyshyn, Svyatoslav; Lviv Polytechnic National University
    The paper examines the efficiency of the application of CUDA technologies for the parallelization of the cryptographic algorithm with the public key. The speed of execution of several implementations of the algorithm is compared: sequential implementation on the CPU and two parallel implementations – on the CPU and GPU. A description of the public key algorithm is presented, as well as properties that allow it to be parallelized. The advantages and disadvantages of parallel implementations are analyzed. It is shown that each of them can be suitable for different scenarios. The software was developed and several numerical experiments were performed. The reliability of the obtained results of encryption and decryption is confirmed. To eliminate the influence of external factors at the time of execution the algorithm was tested ten times in a row and the average value was calculated. Acceleration coefficients for message encryption and decryption algorithms were estimated based on OpenMP and CUDA technology. The proposed approach focuses on the possibility of further optimization through the prospects of developing a multi-core architecture of computer systems and graphic processors.