基于线性分组码和湿纸码的三层信息隐藏算法

摘要

Based on LSB algorithm, linear block coding and wet paper coding, this paper presents a new high-efficiency steganographic algorithm. The secret message is embedded into the cover data through three layers: In the first layer, secret message is carried by cover data based on LSB steganographic algorithm. In the second layer, using wet paper coding to select the direction of modification, the paper embeds secret message with F5 on the cover data. The wet paper coding takes the third part of secret message in the third layer. Analysis result shows that the algorithm has more capacity with same embedding efficiency.%在LSB算法、线性分组码和湿纸编码的基础上,提出一种高效数据隐藏算法.秘密信息分3层嵌入载体数据中:第1层采用LSB算法嵌入一部分秘密信息.第2层采用湿纸编码调整方向,用F5算法在n bit信息中嵌入k bit秘密信息.第3层湿纸编码在调整第2层嵌入方向的同时携带一部分秘密信息.分析结果表明,该算法在相同嵌入效率情况下具有较大的嵌入容量.