Title: Cost-effective cryptographic architecture in quantum dot cellular automata for secured nano-communication

Authors: S. Senthilnathan; S. Kumaravel

Addresses: Department of Micro and Nano Electronics, School of Electronics Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India; School of Engineering and Technology, Department of Electronics and Communication, Christ University, Bangalore, India ' Department of Micro and Nano Electronics, School of Electronics Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India

Abstract: Quantum dot cellular automata (QCA) provide rapid computational efficiency, high density and low power consumption, which is an alternative for CMOS technology. In digital world, cryptography is an important feature to protect digital data. To ensure the data protection in nano-communication, a QCA-based cryptographic architecture is proposed in this article. In the proposed design, the encryption and decryption are done with the help of random keys which is produced by the pseudo random number generator (PRNG). In this paper, architectural component of cryptographic architecture includes XOR block, 1 to 4 de-multiplexer and PRNG, which are realised using QCA. Finally, an integration of the individual components through clock zone-based crossover, lead to the generation of a novel cryptographic architecture. This design achieves low cost compared to the existing literature, as it uses minimum number of majority gate and inverters with clock zone-based crossover.

Keywords: quantum dot cellular automata; QCA; clock zone-based crossover; CZBC; cryptographic architecture; pseudo random number generator; PRNG; demultiplexer; nano-router.

DOI: 10.1504/IJICT.2024.140485

International Journal of Information and Communication Technology, 2024 Vol.25 No.3, pp.208 - 243

Received: 16 May 2021
Accepted: 26 Aug 2022
Published online: 20 Aug 2024 *

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