Chaos based image encryption using Latin rectangle scrambling

An efficient image cryptosystem is proposed in this paper employing Latin rectangle scrambling based on 2D Hénon chaotic map. To reduce the overall number of rounds for achieving high security, bi-directional pixel diffusion is proposed using piecewise linear chaotic maps. Compared to the existing image cryptosystems, the proposed technique achieves high security in only two rounds. Various simulation results and evaluation metrics are presented for the proposed technique.