一种基于密钥的图像掩密算法

A New Image Steganography Based on Key

本文提出了一种新的LSB掩密算法.该算法采用基于线性同余算法的伪随机数发生器生成掩密和提取所需的密钥,通过该密钥在GIF图像中随机选取所要嵌入信息的位置来实现秘密信息比特的嵌入.实验结果表明该掩密算法可有效地抵御可视攻击和X2攻击.

A new LSB steganography algorithm is presented. In this algorithm,the key used to hide and extract information is generated by a pseudo-random generator based on linear congruent algorithm,the locations of message bits are chosen to complete steganography process with this key in a GIF image. The result indicates that this new steganoraphy is against Visual attack and Chi-square attack effectively.