基于超混沌加密的多水印分级嵌入算法  

Algorithm of Graded Embedding Multi-watermarking Based on Encryption of Hyperchaos

作　　者：张慧华[1] 郑胜林[1] 潘保昌[1] 甘艳芬[1] 温川雪[1] 

机构地区：[1]广东工业大学信息工程学院,广东广州510006

出　　处：《广东工业大学学报》2008年第4期52-55,68,共5页Journal of Guangdong University of Technology

摘　　要：为了提高多水印算法的安全性,提出了基于超混沌序列加密的多水印分级嵌入算法.该算法利用超混沌序列对水印图像进行加密,采用分级嵌入加密后的多个含不同信息的水印图像的方法.实验结果证明了该算法的可行性.该算法在检测水印时需要多组密钥,具有良好的保密性.To prevent that existing single watermarking from being easily attacked and to enhance the security of the general encryption method of multi-watermarking, this paper proposes the algorithm of graded embedding muhi-watermarking, based on encryption of hyperchaos. This algorithm of graded embedding muhi-watermarking uses hyperchaos sequence to encrypt multi-watermarking, graded embedding of multi-watermarking in original image. In the process of extracting watermarking, this graded Embedding multi-watermarking algorithm needs multiple keys, which means the algorithm has nicer secrecy. This method has been proved doable by experiment, and has been analysed to have secrecy, safety and superiority.

关 键 词：多水印 分级嵌入 超混沌序列 多组密钥 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]