id: 06095948 dt: j an: 06095948 au: Li, Chengqing; Chen, Michael Z.Q.; Lo, Kwok-Tung ti: Breaking an image encryption algorithm based on chaos. so: Int. J. Bifurcation Chaos Appl. Sci. Eng. 21, No. 7, 2067-2076 (2011). py: 2011 pu: World Scientific, Singapore la: EN cc: ut: image; encryption; chaos; differential attack ci: li: doi:10.1142/S0218127411029641 ab: Summary: Recently, a chaos-based image encryption algorithm called MCKBA (modified chaotic-key based algorithm) was proposed. This paper analyzes the security of MCKBA and finds that it can be broken with a differential attack, which requires only four chosen plain-images. Performance of the attack is verified by experimental results. In addition, some defects of MCKBA, including insensitivity with respect to changes of plain-image/secret key, are reported. rv: