一种针对Jsteg隐写术嵌入起止点的估计方法

摘要

Jsteg隐写术通过在载体图像DCT域中连续进行LSB替换来嵌入信息，针对它的提取攻击本质上是估计信息嵌入的起点和终点。采取小区域检测法对嵌入信息的起止点进行估计。实验结果表明，该方法简单实用，准确率较高，有良好的推广前景。%Jsteg steganography is to embed message into DCT coefficients of cover image by sequential LSB substitution. The essence of the extraction to sequential Jsteg steganography is to get the begin- ning and end of the message. The beginning and end of the message is get by small region detection method. The results of experiments show that this method is simple and applicable.