Chaotic Encryption Using Hybrid Evolution Cellular Automata and 4D Modulation for Data Centers

Industrial information transmitted through data centers (DCs) is increasingly exposed to more widespread and powerful attack threats. In this article, we propose a chaotic encryption scheme that utilizes a reversible hybrid evolution life-like cellular automata (CA) and 4D modulation to enhance industrial information security. A chaotic permutation based on the logistic-adjusted-sine map and 4D modulation is applied. Subsequently, the rule selection method of the life-like CA is optimized. The reversible hybrid evolution life-like CA is used for block data diffusion, and a bidirectional diffusion mechanism is designed for the block diffusion. Finally, the 4D encrypted data with a bit rate of 224 Gb/s has been successfully verified over an 80 km standard single-mode fiber. The results indicate that the proposed encryption scheme demonstrates strong resistance to cryptanalytical attacks. Attackers cannot obtain valid data when the optical signal-to-noise ratio of the eavesdropping channel is below 18 dB. This scheme provides robust security guarantees for industrial information transmission in DCs.