Jalesh Kumar

A Plaintext-coupled Puzzle-based Image Encryption Scheme Using Dynamic Permutation and Nonlinear Diffusion

Chaos-based image ciphers built on a permutation-diffusion structure are effective, but most rely on regular block shuffles or single-pass global diffusion, and few report the cryptographic properties of their internal building blocks.This paper proposes a puzzle-based image encryption scheme in which square image piec...