基于变进制规则的方程式软件水印算法

Variable carrying rule-based equation software watermarking algorithm

针对方程式重排序算法信息隐藏量低、水印嵌入和提取过程复杂的缺点,提出了一种基于变进制规则的方程式重排序软件水印算法。算法以程序中可安全交换方程式的初始系数序列作为密钥向量,无须借助远程认证中心,利用变进制转换规则和方程式系数循环右移操作实现了水印的嵌入和提取。实验分析表明,算法进一步提高了水印的数据率,增强了水印的隐蔽性,对BLOAT等扭曲攻击具有很强的抵抗能力。

In order to solve the problems of low message hidden rate,the complexity embedding and extracting process for the equation reordering software watermarking algorithm,this paper proposed a new algorithm based on the variable carrying rule.The algorithm used the safe swappable equation initial coefficient as the secret key vector,and took advantage of the variable carrying rule and the equation coefficient rotate right operation to implement the watermarking embedding,without the remote authentication center through the extracting process.Experiment and analysis shows that the algorithm further improves the watermarking data rate and steganography and has strong resistance to the BLOAT distortion attack