Cryptanalysis on an image block encryption algorithm based on spatiotemporal chaos

被引：7
|
作者：
Wang Xing-Yuan [1 ]
He Guo-Xiang [1 ]
机构：
[1] Dalian Univ Technol, Fac Elect Informat & Elect Engn, Dalian 116024, Peoples R China
来源：
CHINESE PHYSICS B | 2012年 / 21卷 / 06期
基金：
中国国家自然科学基金;
关键词：
encryption; spatiotemporal chaos; chosen plaintext attack; equivalent keys; NONLINEAR-SYSTEMS; CRYPTOSYSTEM;
D O I：
10.1088/1674-1056/21/6/060502
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An image block encryption scheme based on spatiotemporal chaos has been proposed recently. In this paper, we analyse the security weakness of the proposal. The main problem of the original scheme is that the generated keystream remains unchanged for encrypting every image. Based on the flaws, we demonstrate a chosen plaintext attack for revealing the equivalent keys with only 6 pairs of plaintext/ciphertext used. Finally, experimental results show the validity of our attack.
引用
收藏
页数：7
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