Breaking an image encryption scheme based on a spatiotemporal chaotic system

被引：56

作者：

Bechikh, Rabei ^{[1
]}

Hermassi, Houcemeddine ^{[1
]}

Abd El-Latif, Ahmed A. ^{[2
]}

Rhouma, Rhouma ^{[1
]}

Belghith, Safya ^{[1
]}

机构：

[1] ENIT, Tunis, Tunisia

[2] Menoufia Univ, Comp Sci Lab, Fac Sci, Shibin Al Kawm, Egypt

来源：

SIGNAL PROCESSING-IMAGE COMMUNICATION | 2015年 / 39卷

关键词：

Cryptanalysis; Spatiotemporal chaos; Image encryption; CRYPTANALYSIS;

D O I：

10.1016/j.image.2015.09.006

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we describe a cryptanalysis of image encryption scheme recently proposed by Chun-Yan Song, Yu-Long Qiao, and Xing-Zhou Zhang. The scheme is based on a spatiotemporal chaos with a dynamic keystream generator, and its security is claimed to rely in utilized the plainimage in the keystream generation process to obtain a different keystream for every plainimage/cipherimage pair. However, two flaws are investigated and prove that the security of the proposal against chosen plaintext attack is groundless. Simulations conducted demonstrate that the plainimage can be recovered under partial attack with an acceptable perceptual quality. Moreover, a total break is possible, but a large number of plain-image/cipher-image pairs is needed. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：151 / 158

页数：8

共 18 条

[1] Cryptanalysis of an ergodic chaotic cipher [J].