Color image encryption based on one-time keys and robust chaotic maps
Color image encryption based on one-time keys and robust chaotic maps
复制标题
基于一次性密钥和鲁棒混沌映射的彩色图像加密
DOI：
10.1016/j.camwa.2010.03.017
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发表时间：
2010-05-01
影响因子：
2.9
通讯作者：
Wang Xingyuan
中科院分区：
文献类型：
--
作者：
Liu Hongjun;Wang Xingyuan
我们设计了一种基于一次性密钥和鲁棒混沌映射的流密码算法，以获得高安全性并改善动态退化。我们利用分段线性混沌映射作为伪随机密钥流序列的生成器。初始条件由真随机数生成器生成，即鼠标位置的 MD5。我们应用该算法对彩色图像进行加密，通过NPCR和UACI两种措施得到了满意的安全级别。当发现MD5冲突时，我们将该算法与传统的循环加密相结合，以保证更高的安全性。加密图像对噪声具有鲁棒性，并且使已知的攻击变得不可行。适用于彩色图像加密的应用。 Crown 版权所有 (C) 2010 由 Elsevier Ltd 出版。保留所有权利。
We designed a stream-cipher algorithm based on one-time keys and robust chaotic maps, in order to get high security and improve the dynamical degradation. We utilized the piecewise linear chaotic map as the generator of a pseudo-random key stream sequence. The initial conditions were generated by the true random number generators, the MD5 of the mouse positions. We applied the algorithm to encrypt the color image, and got the satisfactory level security by two measures: NPCR and UACI. When the collision of MD5 had been found, we combined the algorithm with the traditional cycle encryption to ensure higher security. The ciphered image is robust against noise, and makes known attack unfeasible. It is suitable for application in color image encryption. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.