抗可逆性攻击和嵌入器攻击的安全水印系统

Secure Watermarking System Capable of Resisting Invertibility and Inserter Attacks

提出了可以同时抵抗可逆性攻击和嵌入器攻击的安全水印系统。此系统由协议和算法两个部分组成:水印协议由权威机构颁布,规定了合法水印嵌入及检测的框架;水印算法由嵌入者自行选择或设计。该水印系统将处于不同层次的抗可逆性攻击水印协议与抗嵌入器攻击水印算法结合在一起,另外借鉴了迭加一次伪随机序列负载多比特信息的思想,将单比特水印系统扩展为多比特系统。

A secure watermarking system capable of resisting invertibility and inserter attacks is proposed. The proposed watermarking system is made up of two parts: a protocol issued by an authoritative organization, which defines a framework of watermark embedding and detection, and an algorithm chosen or designed by a copyright owner. While the protocol can defeat invertibility attacks, the algorithm ensures that any attack based on availability of inserter is impossible to succeed. By using a previously introduced technique in which each sequence can carry more than one bit without additional distortion, the proposed method can be expanded to a multiple_bit system.