摘要
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。
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.
出处
《计算机工程》
CAS
CSCD
2012年第17期136-138,141,共4页
Computer Engineering
基金
国家自然科学基金资助项目(61103231)
武警工程大学基金资助项目(WXK2011-10)
关键词
信息隐藏
LSB算法
线性分组编码
湿纸编码
三层结构
steganography
LSB algorithm
linear block coding
wet paper coding
three-layer structure
