Cryptanalysis on an image block encryption algorithm based on spatiotemporal chaos

被引：0
作者：
王兴元 [1 ]
何国祥 [1 ]
机构：
[1] Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology
来源：
Chinese Physics B | 2012年 / 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;
D O I：
暂无
中图分类号：
TP309.7 [加密与解密];
学科分类号：
081201 ; 0839 ; 1402 ;
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
页码：81 / 87
页数：7
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