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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2026-06-12 0:10 |
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Conference: Bucharest University Faculty of Physics 2026 Meeting
Section: Polymer Physics
Title:
PlasmaCipher: Cryptographic strategies for secure communications using cold plasma discharges
Authors:
Valentina MARASCU (1,2), Marius Iulian MIHAILESCU (1), Stefania Loredana NITA (3), Valentin BARNA (4), Catalin CONSTANTIN (2,4), Silviu Daniel STOICA (2), Cristian STANCU(2)
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Affiliation:
1) Faculty of Engineering and Computer Science, Scientific Research Center in Mathematics and Computer Science, SPIRU HARET University, Bucharest, Romania
2) National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, RO77125, Magurele, Ilfov, Romania
3) Institute for Computers, Bucharest, Romania
4) Faculty of Physics, University of Bucharest, 405 Atomistilor Street, Magurele, Ilfov, Romania
E-mail
valentina.marascu@gmail.com
Keywords:
Abstract:
Plasma physics has become an increasingly important interdisciplinary field, with applications ranging from rocket propulsion, carbon-free energy, ITER-like tokamak systems, agriculture, and medicine to emerging information-security technologies. In the context of quantum computing, where future computational devices may accelerate the solution of specific problems beyond the capabilities of classical systems, new physical approaches to cryptography are needed to strengthen secure communications. This work explores cold plasma discharge as a novel cyber-physical foundation for cryptographic key generation and encrypted data transmission. The proposed model uses the distinctive electrical and optical characteristics of low-temperature plasma discharges generated in a hollow-cathode configuration. Helium, hydrogen, and deuterium plasmas were investigated at a gas flow rate of 300 sccm and an input power of 250 W. Electrical measurements obtained using a Single Langmuir Probe, together with OES data, were processed to extract plasma-based features suitable for cryptographic key development. These keys were then integrated into both symmetric and asymmetric encryption schemes, specifically AES and RSA, enabling a comparative analysis of plasma-assisted cryptography in different secure communication scenarios. The computational model was implemented in Python and demonstrates how plasma-derived physical parameters can be transformed into encryption resources for protecting digital information. By combining plasma diagnostics, computational modeling, and established cryptographic algorithms, the proposed approach supports confidentiality, integrity, and availability in secure communications. The study positions cold plasma discharge-based cryptography as a promising interdisciplinary direction where the complex behavior of plasma systems can contribute to resilient, physics-enhanced information security.
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