Selective image encryption using a spatiotemporal chaotic system
Tao Xiang, Kwok‐Wo Wong, Xiaofeng Liao · Chaos An Interdisciplinary Journal of Nonlinear Science · 2007
A universal selective image encryption algorithm, in which the spatiotemporal chaotic system is utilized, is proposed to encrypt gray-level images. In order to resolve the tradeoff between security and performance, the effectiveness of selective encryption is discussed based on simulation results. The scheme is then extended to encrypt RGB color images. Security analyses for both scenarios show that the proposed schemes achieve high security and efficiency.