Securing information using a proposed reliable chaos-based stream cipher: with real-time FPGA-based wireless connection implementation

• DOI: 10.1007/s11071-022-07824-6
• Publication Date: 2022-09-02T18:52:57Z
• Authors: Merah Lahcene; Chaib Noureddine; Pascal Lorenz; Ali-Pacha Adda
• Keywords: Chaotic Maps; Encryption; 02 engineering and technology; Quantum mechanics; 01 natural sciences; Chaos Game Representation; Theoretical computer science; Compressive Sensing; Computer engineering; Biochemistry, Genetics and Molecular Biology; 0103 physical sciences; FOS: Mathematics; Theory and Applications of Cellular Automata; 0202 electrical engineering, electronic engineering, information engineering; Entropy (arrow of time); Molecular Biology; Block cipher; Computer network; Chaos-based Image Encryption Techniques; Physics; Chaos Synchronization and Control in Complex Systems; Life Sciences; Statistical and Nonlinear Physics; Correlation attack; Computer science; Algorithm; Color Image Encryption; Physics and Astronomy; Computational Theory and Mathematics; Computer Science; Physical Sciences; Cryptography; Computer Vision and Pattern Recognition; Genomic Signal Processing and Analysis Techniques; Mathematics

Abstract In this paper, a robust Chaos Based Stream Cipher (CBSC) is proposed . The novelty of this work is that it addresses all challenges confronting chaos- based cryptography. The PCBSC (Proposed CBSC) has a robust synchronization circuit that mitigates the effect of channel noise, a perturbation block that overcomes the dynamical degradation, a robust encryption scheme, and an efficient control parameters ' generator that generates strong keys. According to the complexity evaluation , the improved chaotic map provides good statistical properties. This can be confirmed by the obtained high values of the statistical metrics (Largest Lyapunov Exponent, Approximate Entropy, Permutation Entropy, and Sample Entropy) used for the evaluation . According to the security analysis ; the PCBSC has good security features , the PCBSC provides strong keys that ensure confusion property, as well as enough space to withstand brute-force attacks . On the other hand , the proposed encryption scheme proves its efficiency; the result of the differential attack clearly shows that the diffusion property is guaranteed. Additionally, the original images' statistical properties are completely dispersed on the encrypted images. The obtained performance over noisy channels proves the synchronization circuit's efficiency. When compared to other proposals, the PCBSC provides the best results. In addition, the PCBSC is implemented on an FPGA and evaluated in real-time over a wireless link.