| Gabriel VASILESCU1, Maria DIMA2, Costică BEJINARIU3, Augustin SEMENESCU4
Abstract. We report the design and test of a genuine random-number “expansion” routine, which draws upon a collection of 200,000 physically sourced atmospheric-noise values between 0 and 9,999, producing fresh numbers by merging entries sampled at arbitrary intervals, with offsets derived via a feedback shift-register mechanism using both the standard rand() function and entries from the pool itself, thereby generating non-cyclic outcomes with no identifiable period. To overcome the inherent limitation of a finite entropy pool, we introduce a dynamic self-refreshing mechanism that periodically replaces the oldest consumed values with newly acquired true-random batches-fetched automatically from the same atmospheric-noise source-while simultaneously re-seeding the offset generator with a hash of the incoming data, ensuring an infinite, continuously renewed entropy supply; validation through the DieHarder test suite confirms that the generator maintains its favorable randomness quality over arbitrarily long runs, with negligible performance overhead. Keywords: true random number generator, atmospheric noise, dynamic refreshing DOI 10.56082/annalsarscieng.2026.2.83 Read full article 1Senior Researcher I, Habil. PhD, Eng., National Institute for Research and Development in Mine Safety and Protection to Explosion, Chief Laboratory of Explosives Materials and Pyrotechnic Articles – INCD INSEMEX of Petrosani, Petrosani, Romania (e-mail: dragos.vasilescu@insemex.ro). 2Doctoral School – University of Petrosani, Petrosani, Romania (e-mail: mstsds@proton.me). 3Professor, PhD, Eng., Materials Engineering and Industrial Safety Department, Faculty of Materials Science and Engineering, Vice Dean, Gheorghe Asachi Technical University of Iasi, Iasi, Romania (e-mail: costica.bejinariu@academic.tuiasi.ro). 4Professor, PhD, Eng. Mat. Ec.,National Science and Technology University Politehnica Bucharest, Bucharest, Romania, Member of Academy of Romanian Scientists; (e-mail: augustin.semenescu@upb.ro). |
PUBLISHED in Annals Academy of Romanian Scientists Series on Engineering Sciences
ISSN PRINT 2066 – 6950 ISSN ONLINE 2066 – 8570 |
