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在互联网和多媒体技术迅速发展的大环境中,对数字版权进行保护大多采用的是数字水印技术,虽然这种技术保护手段具有一定的可靠性,但仍然需要数字版权保护协议对这种技术手段的保护作支持。本文在对传统数字水印协议的国内外研究现状、水印模型及其存在的问题全面研究与分析的基础上,提出了基于同态公钥加密算法的一种全新数字水印协议,对传统数字水印存在完全由可信任第三方嵌入或完全由卖方嵌入的问题进行了改进,使其克服了传统数字水印协议存在共谋攻击和不适用于二手交易市场的弊端。进而实现一种高效、公平的数字水印协议。
In the environment of rapid development of internet and multimedia technology, digital watermarking is mostly used for the protection of digital copyright. Although this technical protection method has certain reliability, digital copyright protection protocol is still needed for this technical means Protection for support. Based on the comprehensive research and analysis of the current research status and watermarking model of the traditional digital watermarking protocol and its existing problems, this paper proposes a new digital watermarking protocol based on homomorphic public key encryption algorithm, The problem completely embedded by the trusted third party or completely embedded by the seller has been improved to overcome the drawbacks of the traditional digital watermarking protocols such as collusion attacks and not suitable for the secondary market. So as to realize an efficient and fair digital watermarking protocol.