计算机应用

• 信息安全 • 上一篇    下一篇

基于三维混沌序列的数字图像加密算法

李太勇 贾华丁 吴江   

  1. 西南财经大学经济信息工程学院
  • 收稿日期:2006-01-09 修回日期:1900-01-01 发布日期:2006-07-01 出版日期:2006-07-01
  • 通讯作者: 李太勇

Study on digital image encryption algorithm based on 3D chaotic sequences

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  • Received:2006-01-09 Revised:1900-01-01 Online:2006-07-01 Published:2006-07-01
  • Contact: TaiYong Li

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摘要： 对Lorenz序列进行了改进，改进后的序列具有理想的伪随机特性。提出了应用改进后的Lorenz序列进行图像加密的算法，该算法对图像的像素和空间位置均进行置乱。仿真及分析结果表明，该算法密钥空间大，具有较好的统计特性、较强的抗干扰能力和较高的执行效率，加密效果对密钥敏感。

关键词: 混沌, Lorenz序列, 图像加密, 混沌加密

Abstract: Lorenz sequences were improved to be with ideal pseudorandomness. An image encryption algorithm was proposed, which scrambled the pixels and the spaces of the image with the improved Lorenz sequences. The simulation and analysis show that the algorithm has a large space of keys, good statistical characteristics, strong antinoise ability and high efficiency, and the encryption effect is greatly sensitive to the keys.

Key words: chaos, Lorenz sequences, image encryption, chaotic encryption

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