改进一种基于混沌逻辑映射的图像加密方案

M. Asim, V. Jeoti
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引用次数: 5

摘要

在当今高度计算机化和互联的世界中,多媒体安全已成为一个严重的问题。Pareek等人最近提出了一种基于多个一维混沌逻辑映射的图像加密方案。然而,文献[8]表明,所提出的方案对于选择明文攻击是不安全的,并且还存在一些其他的安全缺陷。本文提出了一种基于密钥依赖s盒和密文反馈的改进方案。改进后的方案有效地满足了实时图像加密的需要,同时对差分和线性密码分析具有较强的安全性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On improving an image encryption scheme based on chaotic logistic map
Multimedia security has become a serious issue in todaypsilas highly computerized and interconnected world. Pareek et al. recently proposed an image encryption scheme based on multiple 1D chaotic logistic maps. However, it has been shown in [8] that the proposed scheme is insecure against the chosen-plaintext attack and also has some other security defects. Here a modified scheme is propose based on a key dependent S-box and ciphertext feedback. The modified scheme efficiently fulfills the need of real-time image encryption, while at the same time it is secure against the differential and linear cryptanalysis.
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