On base of analysis of watermarking attacks on digital images, the paper presents a digital image copyright protection protocol based on digital watermarking technology.
在分析数字图像中数字水印所受各种攻击的基础上，给出了一个基于数字水印技术的数字图像版权保护安全协议框架。
Taking advantage of the commutative encryption, the proposed buyer-seller watermarking protocol is secure and fair to both sides in digital copyright protection.
提出了一种基于交换加密技术的安全公平买方-卖方水印协议，用于保护数字内容版权。
A new secure watermarking protocol which is based on digital signature is proposed through discussing about the attack over watermarking and the security leak of DHWM protocol.
论文在论述数字水印应用面临的攻击和DHWM协议存在安全隐患的基础上，提出了一种新的基于数字签名的安全数字水印协议。
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