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为了提高图像的安全性，介绍了一种基于改进型Zigzag变换和Logistic-Sine映射相结合的新型图像加密算法。利用SHA-512哈希算法生成与明文相关的密钥，将密钥输入混沌映射产生混沌序列；对混沌序列先进行行排序再进行列排序，获取的索引矩阵用于明文图像初步置乱；应用改进型Zigzag变换算法进一步置乱，重复以上置乱3轮；对置乱后的图像进行反向扩散处理来生成密文图像。实验结果表明，该算法密钥空间大，有较强的鲁棒性，能够抵御多种攻击。
Abstract：To enhance the security of images,a novel image encryption algorithm that combines improved Zigzag transformation with Logistic-Sine mapping is introduced.The SHA-512 Hash algorithm is employed to create a key linked to the plaintext,which is fed into the chaotic mapping to produce the chaotic sequence.The chaotic sequence is sorted first by rows and then by columns,and the obtained index matrix is used for the preliminary scrambling of the plaintext image.An improved Zigzag transformation algorithm is applied for further scrambling,and this scrambling process is repeated for three rounds.The scrambled image is processed through inverse diffusion to produce the encrypted image.Experimental results show that the algorithm has a large key space and strong robustness,and can withstand a variety of attacks.
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基本信息:
中图分类号:TP391.41;TP309.7
引用信息:
[1]徐新立,宋新广,王蒙蒙.基于改进型Zigzag变换和Logistic-Sine映射的图像加密算法[J].青岛理工大学学报,2025,46(06):106-113.
基金信息:
国家自然科学基金青年科学基金（62202252）; 青岛理工大学2023年本科教学改革与研究项目（F2023-193）; 中国成人教育协会社会学习研究院2023年度科研课题（ZCXY2023004）