基于LHA密写的信息隐藏技术设计

针对LSB密写的不足,提出了基于最小直方图失真（LHA）密写算法.介绍了LHA密写算法的理论以及详细的LHA全过程的程序,运行结果：LHA可以将秘密信息准确提取出来.当秘密信息量不太大时,LHA密写有很好的视觉隐蔽性、统计隐蔽性,它还具有密钥可选择性、对称的藏算法,从而有很好的安全性.

Secret Information Hiding Technology Based on LHA Steganography

In this paper, the information hiding technology is being discussed. In allusion to the deficiency of the steganography based on LSB, the authors advanced a arithmetic based on least histogram abnormality （LHA）. The theory of the LHA steganography and the detailed program of the whole process of LHA are introduced. The result of the program can illuminate that this arithmetic can exactly pick up the secret information. When the secret information is not too large, the LHA steganography has the ability of visual concealment and hidden statistics. Simultaneity, the key can be set by designers, the arithmetic is symmetrical, and then it has good security. LHA is a better secret information hiding technology.