抗线性组合攻击的数字指纹方案

为了提高抗联合攻击码抵抗线性组合攻击的能力,提出一种改进的基于ACC码的指纹编码方案,该改进方案的指纹由ACC码串联构造而成,嵌入算法采用基于离散余弦变换的扩频嵌入技术,并在算法中应用人类视觉模型,利用改进的硬检测算法实现合谋者追踪.理论分析和实验结果表明,改进的指纹方案提高了追踪到至少一个线性组合攻击合谋者的概率.

Digital fingerprint scheme for linear combination attack

To improve the ability of resisting the linear combination attack,an improved fingerprint scheme based on ACC code is proposed.The fingerprint of this improved scheme is composed of consecutive ACC code.This scheme uses DCT-based spread spectrum embedding,applies the human visual model,and uses improved hard detection to track the colluders.The theoretical analysis and experimental results demonstrate that the improved scheme increases the probability of tracing at least one colluder who uses linear combina...