A novel image encryption based on rossler map diffusion and particle swarm optimization generated highly non-linear substitution boxes

Symmetric encryption is appraised as one of the key ways in which end-to-end data transfer security is guaranteed. To inject confusion in the substitution phase of the modern block encryption system, substitution boxes are utilized. The design of the S-box possesses a high influence on the strength and sturdiness of modern block encryption systems. In this document, we propose to introduce an efficient methodology of creating highly non-linear cryptographic substitution boxes as an alternate to chaotic, or algebraic construction methods. Particle Swarm Optimization is utilized in the construction of highly non-linear S-boxes, in the projected technique the initial population is randomly produced, and the position vector of particles is used in generating S-boxes. Performance appraisal of the constructed S-boxes is confirmed by standard criteria. To assess their appropriateness and their application for encryption, an image encryption scheme of the projected S-boxes is correspondingly suggested, the proposed cryptosystem is evaluated against different standard security analysis tests. The results show that the Proposed Sboxes based cryptosystem bearing strong immunity against various cryptographic attacks.