aspg-2-1925-1791417113 20261007235153 American Scientific Publishing Group admin@americaspg.com American Scientific Publishing Group Journal of Cybersecurity and Information Management JCIM 2769-7851 2690-6775 2023 12 1 Hasan Sankari Tishreen University, Department of Mathematics, Latakia, Syria Mohammad Abobala Tishreen University, Department of Mathematics, Latakia, Syria The objective of this paper is to present a novel application of 2-cyclic refined integers to build a novel crypto scheme for the encryption and decryption of data and information based on the algebraic properties of 2-cyclic refined integers combined with RSA algorithm, where an improved version of RSA crypto-scheme will be established and applied to the security of information and data. On the other hand, we illustrate some examples and figures to show the validity and complexity of the algorithm. 2023 67 73 1925 https://creativecommons.org/licenses/by/4.0/ 10.54216/JCIM.120106 https://www.americaspg.com/journal/2/article/1925 https://www.americaspg.com/storage/41688499903.pdf