This paper introduces an enhancement to the Chen chaotic system by incorporating a constant perturbation term d to one of the state variables, aiming to improve the performance of pseudo-random number generators (PRNGs). The perturbation significantly enhances the system's chaotic properties, resulting in superior randomness and increased security. An FPGA-based realization of a perturbed Chen oscillator (PCO)-derived PRNG is presented, tailored for embedded cryptosystems and implemented on a Nexys 4 FPGA card featuring the XILINX Artix-7 XC7A100T-1CSG324C integrated chip. The Xilinx-based system generator (XSG) tool is utilized to generate a digital version of the new oscillator, minimizing resource utilization. Experimental results demonstrate that the PCO-generated data successfully passes the NIST and TestU01 test suites. Additionally, statistical tests with key sensitivity are performed, validating the suitability of the designed PRNG for cryptographic applications. This establishes the PCO as a straightforward and efficient tool for multimedia security.

Department of Electrical and Computer Engineering College of Engineering Sustainable Energy Center of Excellency Addis Ababa Science and Technology University Addis Ababa Ethiopia

Department of Electrical Engineering Graphic Era Dehradun 248002 India

Electrical Engineering Department Faculty of Engineering Aswan University Aswan 81542 Egypt

Graphic Era Hill University Dehradun 248002 India

Hourani Center for Applied Scientific Research Al Ahliyya Amman University Amman Jordan

Instrumentation Signal and Image Laboratory National Advanced School of Engineering University of Yaoundé 1 P O Box 8390 Yaounde Cameroon

Laboratory of Energy and Electrical and Electronic Systems Department of Physics Faculty of Science University of Yaounde 1 P O Box 812 Yaounde Cameroon

Research Unit of Automation and Applied Computer Electrical Engineering Department of UIT FV University of Dschang Post Box 134 Bandjoun Cameroon

Science Engineer Laboratory for Energy National School of Applied Sciences Chouaib Doukkali University of El Jadida P O Box 20 El Jadida Morocco

Technology and Applied Sciences Laboratory University of Douala Post Box 8698 Douala Cameroon

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